1. A production plan making assistance apparatus for a product including a plurality of components, the production plan making assistance apparatus comprising: a storage unit for storing information of lead time in each process of a plurality of processes to produce each component, information of the process synchronizing in production of different component, information of production ability of production resource and information of production resource consumption in each process; an input-output unit for displaying a process result; and an operation unit for processing the information stored in the storage unit; wherein the operation unit reads out the information stored in the storage unit and assigns a start date and a completion date in each process based on a process in which consumption of the production resource lies within the production ability and which synchronizes with the lead time, and wherein the operation unit specifies the completion date assigned to each previous process in a plurality of synchronizing processes, specifies a start date assigned to the process continuing to the specified completion date, calculates a total period between the specified completion date and the specified start date as a total nonsynchronization degree and outputs the calculated total non-synchronization degree to the input-output unit.

2. The production plan making assistance apparatus according to claim 1, wherein the input-output unit displays names of a plurality of processes which synchronize and the calculated 10 total non-synchronization degree while corresponding the names and the total non-synchronization degree.

3. The production plan making assistance apparatus according to claim 2, 15 wherein the input-output unit further displays information of the start date and the completion date of the process for producing the product and a process table including information of date utilized for calculation of the total non-synchronization degree. 20

4. The production plan making assistance apparatus according to claim 3, wherein the input-output unit further displays a state of consumption of production resource occupying in 25 the production ability. 45

5. The production plan making assistance apparatus according to claim 1, wherein the input-output unit receives information 5 concerning a product and an order, and wherein the input-output unit further adds up every order unit that the calculated total non-synchronization degree is received and displays the non-synchronization degree corresponding to the received order 10

6. The production plan making assistance apparatus according to claim 1, wherein the operation unit specifies a second completion date assigned to a second process previous to a 15 first process among a plurality processes which synchronize, specifies a first start date assigned to the first process and calculates a period between the second completion data and the first start date as a first non-synchronization degree, 20 wherein the operation unit specifies a fourth completion date assigned to a fourth process previous to a third process among a plurality processes which synchronize, specifies a third start date assigned to the third process and calculates a period between the fourth completion data 25 and the third start date as a third non-synchronization 46 degree, and wherein the operation unit calculates a total of the first non-synchronization degree and the third nonsynchronization degree as a total non-synchronization 5 degree.

7. The production plan making assistance apparatus according to claim 1, wherein the operation unit operates as: 10 a process schedule assignment unit assigning the start date and the completion date in each process based on the process which synchronizes with the lead time; a process load calculation unit for adding consumption of the production resource till the assigned 15 completion date from the assigned start date; a process ability judgement unit for comparing the added consumption with the production ability and for judging whether or not the added consumption exceeds the production ability; 20 a production load leveling unit for shifting the assigned start date and the completion date when judged that the added consumption exceeds the production ability; a non-synchronization degree calculation unit for specifying the completion date assigned to the previous 25 process in each of a plurality processed which synchronize, 47 for specifying the start date assigned to the process continuing to the specified completion date and for calculating a total period between the specified completion date and the specified start date as the total non- 5 synchronization degree; and a display control unit for outputting the calculated total non-synchronization degree to the input-output unit.

8. The production plan making assistance apparatus 10 according to claim 1, wherein the storage unit further stores information of production cost price till each process from a first process, wherein the operation unit specifies the completion 15 date assigned to the previous process in each of a plurality processed which synchronize, specifies the start date assigned to the process continuing to the specified completion date and multiplies a period between the specified completion date and the specified start date by 20 the production cost price up to the previous process and calculates a total of multiplied result as the total nonsynchronization degree and outputs the calculated nonsynchronization degree to the input-output unit. 25 9. The production plan making assistance apparatus 48 according to claim 8, wherein the input-output unit displays names of a plurality of processes which synchronize and the calculated total non-synchronization degree while corresponding the 5 names and the total non-synchronization degree.

10. The production plan making assistance apparatus according to claim 1, wherein the input-output unit receives information 10 concerning a plurality of products and orders, wherein the operation unit assigns the start date and the completion date in each process based on a process in which consumption of the production resource lies within the production ability every received order and which 15 synchronize with the lead time, wherein the operation unit specifies the completion date assigned to the previous process in each of a plurality of processes which synchronize, specifies the start date assigned to the process continuing to the 20 specified completion date and calculates a total period between the specified completion date and the specified start date as the total non-synchronization degree, wherein the operation unit outputs to the inputoutput unit information of the total non-synchronization 25 degree calculated for a first order and a synchronizing 49 process for a second order when a synchronizing process for the first order among a plurality of received processes and a synchronizing process for the second order among a plurality of received orders shares same production 5 resource.

11. The production plan making assistance apparatus according to claim 10, wherein the input-output unit displays names of a 10 plurality of synchronizing processes for the first order and the calculated total non-synchronization degree while corresponding the names and the total non-synchronization degree and displays information of a synchronizing process for the second order as an item exchange candidate. 15

12. The production plan making assistance apparatus according to claim 11, wherein the input-output unit receives instruction of item exchange, and 20 wherein the operation unit assigns the start date and the completion date to each process against the first order after assigning the start date and the completion date to each process against the second order. 25 13. A production plan making assistance method for a 50 product including a plurality of components, a computer stores information of lead time in each process of a plurality of processes to produce each component, information of the process synchronizing in 5 production of different component, information of production ability of production resource and information of consumption of the production resource in each process, wherein the computer reads out the stored information, assigns a start date and a completion data to each process 10 based on a process in which consumption of the production resource lies within the production ability and which synchronizes with the lead time, specifies a completion date assigned to each previous process among a plurality of synchronizing processes, specifies a start date assigned to 15 the process continuing to the specified completion date, calculates a total period between the specified completion date and the specified start date as a total nonsynchronization degree and outputs the calculated total non-synchronization degree to the input-output unit. 20

14. The production plan making assistance method according to claim 13, wherein names of a plurality of processes which synchronize and the calculated total non-synchronization 25 degree are displayed while corresponding the names and the 51 total non-synchronization degree.

15. The production plan making assistance method according to claim 14, 5 wherein information of the start date and the completion date of the process for producing the product and a process table including information of date utilized for calculation of the total non-synchronization degree are displayed.

BACKGROUND OF THE INVENTION
The present invention relates to a production plan
making assistance apparatus and a production plan making
assistance method.
10 As Background Art, it is well-known Japanese Patent
Application Publication No. 2015-5032. In Japanese Patent
Application Publication NO. 2015-5032, it is described "the
engineering schedule control device 10a of the embodiment
includes a display unit 51, an engineering schedule DB 41,
15 a work input unit 12 receiving an input concerning work
plan and work contents, a resource input unit 11 receiving
an input concerning resource, a work attribute setting unit
6 for setting work attribute, work context setting unit 7
for setting context between works, a PERT execution unit 21
20 demanding float every work, a priority order evaluation
unit 22 for setting priority order based on work float and
predetermined evaluation function, a resource leveling
execution unit 23 for assigning resources against a
plurality of works, an execution ES control unit 33a for
25 preparing engineering schedule data and registering or
3
renewing the engineering schedule in the engineering
schedule DB 41".
System products such as control panels and the like
is constructed from a plurality of control panels and
5 various units and are the special order products each
construction of which is designed according to customer's
order, produced, tested and forwarded. In factory and each
process/production site (area), a plurality of products are
simultaneously produced parallel. In the various control
10 panels or units, there are mixed those that production
resources necessary to produce such as design post in
charge of product's design, production lines and testing
facilities according to the kind of products are commonly
used and those that such production resources are not
15 commonly used. Therefore, resource competition occurs
between each of processes in components of order item.
When resource competition occurs, production of any
product becomes the deferment. However, in production of
control panel, during the intermediate process such as
20 combining units to the control panel, combination test of
plural control panels and the like, it is necessitated
synchronization of production between components in each
order item (putting together starting date of production).
Also in a case other than control panels, above
25 variations in combination exist in construction of software
4
function or apparatus in system products. Therefore, in
order to observe delivery date of all order items, it is
necessary to plan production schedule taking
synchronization of production within order item into
5 consideration and produce real products while avoiding
resource competition between components mentioned above.
Contrarily, production schedule can be planned by
utilizing technology disclosed in Japanese Patent
Application Publication No. 2015-5032. However, it is not
10 necessarily realized that production lead time can be
shortened by utilizing the technology described in Japanese
Patent Application Publication No. 2015-5032. Therefore,
for example, when units are combined into the control panel,
there will occur a problem that only production schedule of
15 units is advanced and units stay as middle work in hand
until units are combined. As a result, there will occur a
problem that production lead time from customer's order to
forwarding is prolonged.
Accordingly, the present invention has an object to
20 provide an apparatus to assist in plan making of production
schedule by quantifying non-synchronization degree becoming
cause of prolongation of production lead time and
indicating it.
25 SUMMARY OF THE INVENTION
5
To dissolve the above problems, the production plan
making assistance apparatus according to the present
invention is a production plan making assistance apparatus
for a product including a plurality of components, the
5 production plan making assistance apparatus comprising: a
storage unit for storing information of lead time in each
process of a plurality of processes to produce each
component, information of the process synchronizing in
production of different component and information of
10 production ability of production resource; an input-output
unit for displaying a process result; and an operation unit
for processing the information stored in the storage unit;
wherein the operation unit reads out the information stored
in the storage unit and assigns a start date and a
15 completion date in each process based on a process in which
consumption of the production resource lies within the
production ability and which synchronizes with the lead
time, and wherein the operation unit specifies the
completion date assigned to each previous process in a
20 plurality of synchronizing processes, specifies a start
date assigned to the process continuing to the specified
completion date, calculates a total period between the
specified completion date and the specified start date as a
total non-synchronization degree and outputs the calculated
25 total non-synchronization degree to the input-output unit.
6
According to one aspect of the present invention, the
non-synchronization degree becoming cause of prolongation
of production lead time is quantified and indicated,
thereby it can be provided an apparatus to assist in plan
5 making of production schedule.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a figure indicating one example of process
flowchart for production schedule making in a first
10 embodiment;
Fig. 2 is a block diagram indicating one example of
construction of a production plan making assistance
apparatus in the first embodiment;
Fig. 3 is a figure indicating one example of order
15 information;
Fig. 4 is a figure indicating one example of process
information;
Fig. 5 is a figure indicating one example of process
order information;
20 Fig. 6 is a figure indicating one example of
production ability information;
Fig. 7 is a figure indicating one example of
production resource consumption information;
Fig. 8 is a figure indicating one example of
25 production schedule plan information;
7
Fig. 9 is a figure indicating one example of
production load information;
Fig. 10 is a figure indicating one example of nonsynchronization
degree information in the first embodiment;
5 Fig. 11 is a figure indicating one example of input
screen;
Fig. 12 is a figure indicating one example of the
first production schedule plan information and production
load information;
10 Fig. 13 is a figure indicating one example of the
second production schedule plan information and production
load information;
Fig. 14 is a figure indicating one example of the
third production schedule plan information;
15 Fig. 15 is a figure indicating one example of process
flowchart of non-synchronization degree calculation in the
first embodiment;
Fig. 16 is a figure indicating one example of the
first output screen in the first embodiment;
20 Fig. 17 is a figure indicating one example of the
second output screen in the first embodiment;
Fig. 18 is a figure indicating one example of the
third output screen in the first embodiment;
Fig. 19 is a block diagram indicating one example of
25 construction of production plan making assistance apparatus
8
according to the second embodiment;
Fig. 20 is a figure indicating one example of
production cost price information;
Fig. 21 is a figure indicating one example of process
5 flowchart of non-synchronization degree calculation in a
second embodiment;
Fig. 22 is a figure indicating one example of nonsynchronization
degree information in the second embodiment.
Fig. 23 is a figure indicating one example of output
10 screen in the second embodiment;
Fig. 24 is a block diagram indicating one example of
construction of production plan making assistance apparatus
according to a third embodiment;
Fig. 25 is a figure indicating one example of process
15 flowchart of production plan making in the third
embodiment;
Fig. 26 is a figure indicating one example of item
exchange candidate information;
Fig. 27 is a figure indicating one example of the
20 fourth production schedule plan information;
Fig. 28 is a figure indicating one example of nonsynchronization
degree information in the third embodiment;
Fig. 29 is a figure indicating one example of the
first output screen in the third embodiment; and
25 Fig. 30 is a figure indicating one example of the
9
second output screen in the third embodiment.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Hereinafter, the embodiments of the present invention
5 will be described with reference to the drawings.
First Embodiment
Fig. 1 indicates one example of process flowchart in
the present embodiment and Fig. 2 is a block diagram
10 indicating one example of construction of a production plan
making assistance apparatus 10 according to the present
embodiment. In Fig. 2, the production plan making
assistance apparatus 10 is an apparatus including PC
(computer) such as server or terminal and the like and
15 software installed in the PC. The production plan making
assistance apparatus 10 includes an input-output unit 100,
a storage unit 200 and an operation unit 300.
The input-output unit 100 is a unit to obtain data
necessary for process of the operation unit 300 and to
20 display process result. For example, this input-output
unit 100 is constructed so as to include an input device
such as keyboard or mouse, a communication device to
communicate with the outside, a record-playback device such
as disc-type storing medium and an output device such as
25 CRT or liquid crystal monitor.
10
The storage unit 200 includes input information 210
utilized in process of the operation unit 300 and output
information 220 storing process result and is constructed
from a memory device such as hard disc drive, solid-state
5 drive, memory and the like. The input information 210
includes order information 211, process information 212,
process order information 213, production ability
information 214 and production resource consumption
information 215. These kinds of information will be
10 described hereinafter.
The order information 211 is information to control
products concerning orders from customers and delivery data
thereof. For example, as shown in Fig. 3, the order
information 211 includes information of order ID,
15 production group ID, production ID, production number,
product code, delivery date. In the order information 211
shown in Fig. 3, for example, the order item of order ID
"O-01" indicates that it is accepted an order: products
(kinds of products) with product code "CA", "UA", "CB",
20 "UB" are respectively accepted by "1 (product)" with
production ID "CA-01", "1 (product)" with production ID
"UA-01", "1 (product)" with production ID "CB-01", "2
(products)" with production ID "UB-01" and delivery date of
"4/21".
25 Further, it is shown: products with production ID
11
"CA-01", "UA-01" will be produced in production group ID
"G01-1", products with production ID "CB-01", "UB-01" will
be produced in production group ID "G01-2". For example,
when one product is constructed from more than one housing,
5 one production group is assigned to one housing. Here,
production group is not limited to this, and more than one
production group may be assigned to one product based on
any standard.
Here, when the order information 211 is represented
10 as in Fig. 3, one line in the table is called as record and
combination of "O-01", "G01-1", "CA-01", "1", "CA" and
"4/21" is called as the first record item and combination
of "O-01", "G01-1", "UA-01", "1", "UA", "4/21" is called as
the second record item. As for representation in the other
15 table described hereinafter, the line in the table is
called as record.
The process information 212 is information to control
processes every kind of products and lead time in each of
processes. For example, as shown in Fig. 4, the process
20 information 212 includes information of product code,
process ID, process name, lead time, and synchronization
process flag. In the process information 212 shown in Fig.
4, products with product code "CA" are produced by six
processes of "design" (DSG), "supply" (SPL), "assembly"
25 (ASM), "simple test" (STS), "combination test" (CTS),
12
"forwarding" (FWD) and it is indicated that each lead time
is "5 (days)", "1 (day)", "3 (days)", "2 (days)", "3
(days)", "1 (day)".
Further, "SG", "SO" is set as the synchronization
5 process flag of "supply", "combination test" process. Here,
"SG" indicates that start date of the process is
synchronized within the same production group ID and "SO"
indicates that start date of the process is synchronized
within the same order ID. Further, to the synchronized
10 process, the same synchronization process flag is set.
The process order information 213 is information to
control process order of each kind of product. For example,
as shown in Fig. 5, the process order information 213
includes information of product code, previous process ID
15 and following process ID. In the process order information
213 shown in Fig. 5, production is started from the
following process ID in which "S" is set to the previous
process ID, next following process is searched by tracing
the previous process ID having the above following process
20 and trace is finally conducted to the record in which "E"
is set to the following process ID, thereby a series of
process order is controlled.
For example, the product with the product code "CA"
is started to produce from the following process ID "PCA-01
25 (design)"to the previous process ID of which is set "S".
13
Thereafter, passing through processes of "PCA-02 (supply)",
"PCA-03 (assembly)", "PCA-04 (simple test)", "PCA-05
(combination test)", production of the product with the
product code "CA" is ended at process of "PCA-06
5 (forwarding)".
The production ability information 214 is information
to control production resource necessary in each process
and includes information of production resource ID,
production resource name, consumption type, production
10 ability and unit. In the production ability information
214 shown in Fig. 6, for example, it is indicated that the
resource controlled by production resource ID "R-a1" is
"combination test area "and production ability is "1 (set)".
In the present embodiment, although production ability is
15 described per one day, production ability may be controlled
by time standard necessary for production plan such as per
one hour.
Here, the resource controlled by production resource
ID "R-c1" is "assembly line A" and "14(n)" of production
20 ability indicates the operable time per one day. Further,
"consumption type" is information to direct consumption
method of each production resource and "occupation"
indicates that production load value in some process is
continued to consume over lead time. "Proportional
25 distribution" means that production load value is divided
14
by period of lead time and is assigned to each schedule.
The production resource consumption information 215
is information to control consumption of resource in some
product and in some process and includes information of
5 product ID, process ID, production resource ID, production
load and unit. In the production resource consumption
information 215 shown in Fig. 7, for example, it is
indicated in product code "CA", "process ID "PCA-03" that
operation time "21 (h)" is necessitated in the production
10 resource ID "R-c1 (assembly line A)". In the present
embodiment, one production resource is set to one product
and one process. Therefore, the operation time "21 (h)" is
time per one product and per one process.
However, it is not limited to the above and it may be
15 set for one product and one process a plurality of
production resources such as operation time by person or
operation time by facilities, operation area and the like.
Here, in the product code "CA", process ID "PCA-05", it is
indicated that production load per one day is "1 (set)" in
20 production resource ID "R-a1 (combination test area)".
Further, the output information 220 includes
production schedule plan information 221, production load
information 222 and non-synchronization degree information
223. Each information will be described hereinafter.
25 The production schedule plan information 221 is
15
information to control completion time limit of process in
each component of product or unit and includes order ID,
production ID, product code, process ID, process start and
process time limit. In the production schedule plan
5 information 221 shown in Fig. 8, for example, it is
indicated that order ID "O-01", production ID "CA-01",
process ID "PCA-01" indicate the plan in which production
is started from "4/5" and completed in "4/9".
The production load information 222 is information to
10 control how each production resource is consumed every day
when products are produced corresponding to time limit of
each process instructed by the production schedule plan
information 221. The production load information 222
includes information of production resource ID, date, order
15 ID, production ID, process ID, production load and unit.
In the production load information 222 shown in Fig. 9, for
example, it is indicated in production resource ID "R-a1"
that operation of order ID "O-01", production ID "CA-01",
process ID "PCA-05" is executed for "1 (set) over 3 days
20 from "4/18" to "4/20".
The non-synchronization degree information 223 is
information to control collection degree of each component
in the process that production synchronization of a
plurality of control panels or units and the like is
25 necessary. The non-synchronization information 223
16
includes information of synchronization ID, order ID,
production ID, process ID, non-synchronization degree and
total non-synchronization degree. Here, the nonsynchronization
degree is an index indicating estrangement
5 between the process in which production synchronization of
products or units is necessary and the previous process of
day unit. Here, it is indicated that the production
synchronization is obtained so long as the value thereof is
smaller.
10 In the non-synchronization degree information 223
shown in Fig. 10, for example, it is indicated in
synchronization ID "SG-02", order ID "O-01" that the nonsynchronization
degree of process ID "PCB-02" in production
ID "CB-01" and process ID "PUB-03" in production ID "UB-01"
15 are respectively "0" and "4", therefore it is indicated
that total of non-synchronization degree in the same
synchronization ID is "4".
Further, returning to Fig. 2, the operation unit 300
is provided to obtain data necessary for operation from the
20 input information 210 of the input-output unit 100 or
storage unit 200 and to output process result to the output
information 220 of storage unit 200. The operation unit
300 is constructed from operation process unit 320 actually
conducting operation process and memory unit 310 which
25 becomes work area of operation process in the operation
17
process unit 320.
The memory unit 310 is provided to temporarily store
data obtained from the input information 210 of the inputoutput
unit 100 and storage unit 200 or result processes by
5 the operation process unit 320. The operation process unit
320 includes data obtaining unit 321 for obtaining data
necessary for operation from the input information 210 and
store in the memory unit 310 and process schedule
assignment unit 322 for assigning schedule in each process
10 based on the information of delivery date or process order
of each product, process lead time.
Further, the operation process unit 320 includes
production load calculation unit 323 for calculating
production load every day from information of schedule of
15 each process and production resource consumption,
production ability judgment unit 324 for judging whether or
not production load for each day exceeds the production
ability and production load leveling unit 325 for changing
assignment schedule of production load in a case that
20 production load exceeds production ability.
Further, the operation process unit 320 includes nonsynchronization
degree calculation unit 326 for calculating
the non-synchronization degree of production based on a
period between start date of the process and time limit of
25 the previous process in the process in which it is
18
necessary to take synchronization of production per order
unit or production unit and display control unit 327 for
respectively storing information of process time limit
every product, process, information production load and
5 ability, calculation result of the non-synchronization
degree into the production schedule plan information 221,
production load information 222 and non-synchronization
degree information 223 and display on the input-output unit
100.
10 It will be conceivable that the operation process
unit 320 is a processor having memory circuit and each unit
may be realized based on that program corresponding to each
unit is stored in the memory circuit and the processor
executes the stored programs. Further, it will be
15 conceivable that the operation process unit 320 is a
processor and program corresponding to each unit is stored
in the storage unit 200 or memory unit 310 and the
operation process unit 320 may operate as each unit based
on that the processor executes the stored programs.
20 Next, according to the process flowchart shown in Fig.
1, example of operation of each function (each unit) in the
production plan making assistance apparatus 10 of Fig. 2
will be described.
First, for example, the user who is a production
25 manager inputs conditions such as order ID, production ID,
19
product code, time limit becoming plan objects of
production schedule in search condition columns on the
screen of production schedule plan system shown in Fig. 11
and clicks. Thereby, the order information 211
5 corresponding to the order item is output and displayed on
the search result columns.
Next, the user selects the order item becoming the
plan object among the order items output on the search
result columns and clicks the execution button. Thereby,
10 process of the production plan making assistance apparatus
10 can be started. Here, the order information 211 and
selection information may be received by the input-output
unit 100. In the present embodiment, description will be
done hereinafter as the order ID "O-01", "O-02" displayed
15 on the search result columns of Fig. 11 are selected.
The production plan making assistance apparatus 10
starts processes. Thereby, the data obtaining unit 321
obtains the order information 211 selected by the user and
obtains the process information 212, the process order
20 information 213, the production ability information 214,
the production resource consumption information 215
concerning the order information (S100). On the screen of
the production schedule plan system shown in Fig. 11, for
example, the information of 1 to 6 record items of the
25 process information 212 shown in Fig. 4 is obtained
20
corresponding to the product code "CA" of the order ID "O-
01" and further the information of 1 to 7 record items of
the process order information 213 shown in Fig. 5 is
obtained.
5 Furthermore, corresponding to the process ID "PCA-01"
to "PCA-06" of the process information 212 shown in Fig. 4,
the record items 1 to 3 of the production resource
consumption information 215 shown in Fig. 7 are obtained
and the record items 1, 2 and 6 of the production ability
10 information 214 shown in Fig. 6 are obtained corresponding
to the production resource ID "R-a1", "R-b1", "R-c1" of the
production resource consumption information 215. Here,
description will be continued hereinafter as various kinds
of input information are obtained, as shown in Figs. 3 to 7.
15 The process schedule assignment unit 322 conducts
schedule assignment every product and process based on the
time limit of order information 211, the process order
every product code in the process order information 213,
the lead time every process of the process information 212
20 (S110). In the present embodiment, it will be described
the example in which the production schedule is planned
according to the order of order items that the delivery
date is set to the far-off date.
In the order information 211 shown in Fig. 3, the
25 delivery dates of two order items "O-01", "O-02" are
21
respectively set to "4/21", "4/25" and the delivery date of
"O-02" is far-off than the "O-01". Therefore, schedule
assignment every process is conducted from the product
(production ID "CA-02", "UA-02") of the order item. Here,
5 when the synchronization process flag is set, the schedule
assignment may be conducted so that the synchronized
process is made the standard.
Next, the process schedule assignment unit 322
obtains the final process "PCA-06" (previous process ID of
10 record in which "E" is set to the following process ID) in
the product code "CA" of production ID "CA-02". Further,
the lead time "1 (day)" of the product code "CA", process
ID "PCA-06 (forwarding)" is obtained and the lead time is
assigned to "4/25" which is the delivery data of product.
15 Thereafter, the production load calculation unit 323
judges whether or not the production resource consumption
information 215 exists against the process in which
assignment is conducted in the process schedule assignment
unit 322 (S120). When judged that the production resource
20 consumption information exists, procedure shifts to S130,
and on the contrary, when judged that the production
resource consumption information does not exist, procedure
shifts to S160. In the production resource consumption
information 215 shown in Fig. 7, since data does not exist
25 for the product code "CA", the process ID "PCA-06",
22
procedure shifts to process of S160.
Next, the process schedule assignment unit 322 judges
whether or not process schedule assignment of the order
items and process becoming plan object of the production
5 schedule is conducted. When judged that the order items
and process not assigned exist, procedure returns to S110
and when judged that the order items and process not
assigned does not exist and when schedule assignment in all
order items, process is completed, procedure shifts to S170.
10 Here, procedure returns to S110 since assignment is not
conducted in the order item "O-02" and process ID "PCA-01"
to "PCA-05".
Similar to the above, the process schedule assignment
unit 322 obtains the product code "CA" and lead time "3
15 (days)" of the previous process "PCA-05 (combination test)"
of "PCA-06" (forwarding) and the present process from the
process order information 213 shown in Fig. 5 and the
process information 212 shown in Fig. 4. The process
schedule assignment unit 322 assigns "combination test"
20 process for three days (4/22 to 4/24) from 4/24 which is
one day before 4/25 to which "forwarding" process is
assigned.
Thereafter, since the production load information of
the product code "CA", process ID "PCA-05" exists (third
25 record item) in the production resource consumption
23
information 215 shown in Fig. 7, the production load
calculation unit 323 conducts addition of production load
for the process in which schedule assignment is done in
S110 (S130). Addition method of production load against
5 the present product, process will be described by using an
example of Fig. 12.
The figure (schedule for order ID and the like)
described at the upper side in Fig. 12 is information of
production schedule plan in which schedule is assigned
10 every product, process. It is indicated that the schedule
in each process is assigned by the period surrounded by the
bold line frame. Further, the figure (schedule for
production resource ID and the like) described at the lower
side in Fig. 12 is information of production ability for
15 each production resource and production load addition. It
is indicated that the bold dot line indicates ability of
each production resource, the black cell indicates load
added thereto, gray cell indicates load already added in
the other order item.
20 First, the production load calculation unit 323
obtains the production resource ID "R-a1" (combination test
area)", the production load "1 (set)" of the product code
"CA", the process ID "PCA-05" from the production resource
consumption information 215 shown in Fig. 7 and obtains the
25 production number "1" of the production ID "CA-02" from the
24
order information 211 shown in Fig. 3 and integrates. Next,
the production load calculation unit 323 obtains the
consumption type "occupation" and production ability "1
(set)" of the production resource and respectively adds "1
5 (set)" during 3 days of 4/22 to 4/24 to which the process
is assigned (see black cells of Fig. 12).
Further, the production ability judgement unit 324
judges whether or not the load every the production
resource added by the production load calculation unit 323
10 exceeds the production ability in each resource (S140).
When judged that the load exceeds the production ability,
procedure shifts to S150 and when judged that the load lies
within the production ability, procedure shifts to S160.
For the production schedule of the production ID "CA-
15 02", the process ID "PCA-05 (combination test)" shown in
Fig. 12, since the production load of the production
resource "R-a1 (combination test)" lies within the ability
(1 set), procedure shifts to S160. Here, since the process
ID "PCA-01" to "PCA-04" of the order item "O-02" and the
20 production ID "CA-02" are not assigned, procedure returns
to S110 (S160).
Next, similar to the above, the process schedule
assignment unit 322 obtains the lead time "2 (days)" of the
previous process "PCA-04 (simple test)" and the present
25 process of the product code "CA", "PCA-05 (combination
25
test)" from the process order information 213 shown in Fig.
5 and the process information 212 shown in Fig. 4 and
assigns "simple test" process during 2 days (4/21 to 4/22)
from 4/21 which is one day before the start date of "4/21
5 to 4/24" to which "combination test" process is assigned.
The production load calculation unit 323, similar to
the process in S130, obtains the production resource ID "Rb
(simple test area)", the production load "1 (product)" of
the present process from the production resource
10 consumption information 215 shown in Fig. 7 and obtains the
production number "1" of the production ID "CA-02" from the
order information 211 shown in Fig. 3, thereafter
integrates. Further, the production load calculation unit
323 obtains the resource consumption type "occupation" and
15 the production ability "1 (product)" from the order
information 211 shown in Fig. 3 and respectively adds "1
(product)" during 2 days of 4/21 to 4/22 to which the
present process is assigned.
Thereafter, the production ability judgement unit 324,
20 similar to the process in S140, compares the production
ability of resource with the load. In the simple test area
A shown in Fig. 12, the production load of the other item
is already added during 4/20 to 4/21 (see gray cells in Fig.
12) and the production load exceeds the production ability,
25 procedure shifts to S150.
26
The production load leveling unit 325 shifts the
present process to the day that the production load lies
within the ability (S150). In the "simple test area A"
shown in Fig. 12, the production load lies within the
5 ability by moving up the schedule to 4/18 to 4/19, thereby
"simple test" is assigned to this date.
Processes of S110 to S160 described in the above are
carried out for the production ID "CA-02", "UA-02" of the
order ID "O-02", thereby information of the production
10 schedule plan and the production load shown in Fig. 13 is
made. In the upper figure of Fig. 13, although supply date
of the production ID "CA-02", "UA-02" are gathered to
"4/14", this is due to the synchronization process flag
"SG" of the process ID "PCA-02 (supply)" in the process
15 information 212 of Fig. 4.
The synchronization flag indicates that the start
date of the present process is synchronized with the
production ID unit. In the order information 211 shown in
Fig. 3, since the production group of "production ID "CA-
20 02", "UA-02" coincides with "G02-1", supply is assigned to
the same day. Further, supposed that the similar processes
are carried out for the order ID "O-01", the production
schedule plan shown in Fig. 14 is made and the production
schedule plan information 221 shown in Fig. 8 and the
25 production load information 222 shown in Fig. 9 are made,
27
description will be done hereinafter.
Thereafter, the non-synchronization degree
calculation unit 326 calculates the non-synchronization
degree in each process based on the production schedule
5 plan information 221 and information of the synchronization
process flag in the process information 212 (S170). The
non-synchronization degree is an index representing stay
degree of production between the present process and the
previous process in the process necessary for production
10 synchronization among a plurality of components. The nonsynchronization
degree is, for example, calculated as the
total of period between the start date of the present
process and the completion date of the previous process.
In the present embodiment, while making the example
15 of the production schedule plan shown in Fig. 14 as the
object, an example of calculation process of the nonsynchronization
degree will be described referring to the
flowchart shown in Fig. 15. First, the non-synchronization
degree calculation unit 326 extracts the synchronization
20 process along the plan for each product in the production
schedule plan information 221 (S1710).
Concretely, the non-synchronization degree
calculation unit 326 extracts the process ID of the process
information 212 and the synchronization process flag from
25 the product code of the production schedule plan
28
information 221. In the production schedule plan
information shown in Fig. 14, for example, the
synchronization process of the production ID "CA-01" is
"PCA-02 (supply)" and "PCA-05 (combination test)" form the
5 process information 212 shown in Fig. 4 and obtains the
synchronization process flag "SG", "SO" for these processes.
Next, the non-synchronization degree calculation unit
326 obtains the previous processes for the above
synchronization processes from the process order
10 information 213 (S1720). In the process order information
213 shown in Fig. 5, the previous processes of "PCA-02" and
"PCA-05" are respectively "PCA-01" and "PCA-04". Such
information is obtained.
Further, the total of period to the previous process
15 every synchronization process extracted in S1710 is
calculated (S1730).
For example, in the information of the production
schedule plan shown in Fig. 14, the start date of "PCA-05
(combination test)" which is the synchronization process of
20 the production ID "CA-01" is specified and the process time
limit (completion date) of "PCA-04 (simple test)" which is
the previous process is specified. Further, it is
calculated that the period of "2 (days)" exists from the
process time limit of "PCA-04 (simple test)" which is the
25 previous process against the start date of "PCA-05
29
(combination test)".
Further, the start date of "PCB-05 (combination
test)" which is the synchronization process of the
production ID "CB-01" is specified and the process time
5 limit (completion date) of "PCB-04 (simple test)" which is
the previous process is specified. Furthermore, it is
calculated that the period of "0 (day)" exists from the
process time limit of "PCB-04 (simple test)" which is the
previous process against the start date of "PCB-05
10 (combination test)". "2 (days)" and "0 (day)" are totaled,
thereby "2 (days)" is calculated.
Thereafter, the non-synchronization degree
calculation unit 326 collects the period of the
synchronization process and the previous process calculated
15 in S1730 every component of the product (S1740). In the
present embodiment, supposed that the non-synchronization
degree information 223 shown in Fig. 10 is produced from
the non-synchronization degree every product calculated in
the process of S1730, description will be done hereafter.
20 Returning to the flowchart in Fig. 1, the display
control unit 327 respectively stores the production
schedule plan every order item stored in the memory unit
310, the production load for the production resource every
date, the information of the non-synchronization degree
25 calculated in the above into the production schedule plan
30
information 221, the production load information 222 and
the non-synchronization degree information 223 and displays
on the input-output unit 100 (S180).
An example of output screen in the present embodiment
5 is shown in Fig. 16. At the upper side of the screen, the
order items and the process table every component are
displayed based on the production schedule plan information
221. Further, on that screen, the non-synchronization
period in the synchronization process is displayed by black
10 color based on the non-synchronization degree information
223, thereby points where production synchronization is not
taken can be confirmed in the process table.
Furthermore, at the lower side of the screen
calculation result of total non-synchronization degree in
15 each synchronization process is displayed. In the table,
the result is sorted according to the order in which the
total non-synchronization degree becomes larger, thereby
filtering corresponding to the value of the total nonsynchronization
degree is conducted. Further, as shown in
20 the output screen of Fig. 16, when the record in the table
is selected, item concerning in the process table, process
(order ID "O-01", process name "supply") are highlighted,
thereby points of process improvement corresponding to the
total non-synchronization degree can be confirmed.
25 Further, in the present screen, when the "load
31
display" button is clicked under the state that the record
of table is selected, information of the production
resource and the production load concerning the process of
record is displayed as the output screen shown in Fig. 17.
5 In Fig. 17, it is indicated a state after the first record
item of the non-synchronization degree information is
selected and "load display" button is clicked. In the
present screen, it is displayed an example under the state
that the production resource "R-d1 (unit line)" is assigned
10 to the previous process "PUB-02 (assembly)" of the
production ID "UB-01". The assembly date of the present
production is 2 days of "4/3 to 4/4 and is highlighted in
the production load information column of the present
screen by black cells.
15 Further, in the production load information column,
the adding state of production load in the schedule before
and after the production resource is displayed by gray
cells, thereby examination for reduction of middle work in
hand, such as whether or not the schedule can be shifted to
20 later date by shortening the lead time and corresponding to
over-time work, can be done.
As described in the above, the intermediate process
in which production does not synchronize can be
quantitatively displayed for the order item constructed
25 from a plurality of products or units. Further, based on
32
this display, the user can grasp middle work in hand,
thereby it can be made the production schedule plan to
effectively reduce middle work in hand in whole factory.
Here, in the present embodiment, although total non-
5 synchronization degree is calculated every process in S1730
and the calculated result is displayed, the nonsynchronization
degree may be collected every order item in
S1740 and the collected result may be displayed.
Instead of the output screen shown in Fig. 16, it is
10 shown in Fig. 18 an example of output screen in which the
total non-synchronization degree is collected every order
item and the collected result is displayed.
Based on that the user sees this display, the object
of production schedule plan becomes more, and even if
15 schedule preparation of individual schedule is difficult,
review of the production schedule plan can be conducted in
a wide viewpoint such as shortening of production lead time,
review of production line or outsourcing of order items.
20 Second Embodiment
As a second embodiment, when the non-synchronization
degree of production is calculated in a plurality of
components, it will further indicate an example that
production cost price of each component will be integrated
25 and appreciated. The production plan making assistance
33
apparatus 10 of the present embodiment, as shown in Fig. 19,
is constructed by adding a production cost price
information 216 to the input information 210 of the storage
unit 200 in the construction of the production schedule
5 plan making apparatus 10 shown in Fig. 2.
Further, process of the present embodiment will be
described by using the flowchart shown in Fig. 1. Here, as
for the processes as same as those in the first embodiment,
description will be omitted. However, since operation of
10 the non-synchronization degree calculation unit 326 in Fig.
19 is different from the operation in Fig. 2, process
contents in S170 is different. Therefore, such process
contents will be described by using Fig. 21.
The production cost price information 216 is the
15 information to control the production cost price necessary
up to each process every kind of product and includes the
product code, the process ID and the information of
accumulated product cost price. In the product cost price
information 216 shown in Fig. 20, it is indicated that the
20 production cost price taken until the process ID "PCA-01
(design)" of the product code "CA" is completed is "3 (M¥)".
Further, the information of accumulated production
cost price indicates accumulation from the first process
and it is indicated that the production cost price of "10
25 (M¥)" is taken until the process ID "PCA-06 (forwarding)"
34
being the final process from the first process of the
product code.
Next, operation in the production plan making
assistance apparatus 10 of Fig. 19 will be described
5 according to the flowchart shown in Fig. 1. First, the
data obtaining unit 321 obtains the production cost price
information 216 in addition to the order information 211,
the process information 212, the process order information
213, the production ability information 214 and the
10 production resource consumption information 215 (S100).
Here, supposed that various kinds of information shown in
Figs. 3 to 7 and Fig. 20 are obtained, description will be
done hereinafter.
Here, description of the processes of S110 to S160
15 will be omitted since such processes are as same as those
in the first embodiment. Supposed that the production
schedule plan shown in Fig. 14, the production schedule
plan information 221 shown in Fig. 8 and the production
load information 222 shown in Fig. 9 are produced,
20 description will be done hereinafter.
The non-synchronization degree calculation unit 326
calculates the non-synchronization degree in each process
based on the production schedule plan information 221 and
the synchronization process flag information in the process
25 information 212 (S170). In the present embodiment, by
35
making an example of the production schedule plan shown in
Fig. 14 as the object, the non-synchronization degree
calculation process will be described by using the
flowchart shown in Fig. 21. Here, since processes in S1710
5 to S1730 are as same as those in the first embodiment,
description thereof will be omitted.
The non-synchronization degree calculation unit 326
integrates the production cost price necessitated up to the
previous process during the period to the previous process
10 every the synchronization process (S1735). For example, in
the production schedule plan shown in Fig. 14, the start
date of the synchronization process "PCA-05 (combination
test)"of the production ID "CA-01" is specified and the
completion date of the previous process "PCA-04" (simple
15 test)" is specified, thus the period between "PCA-05
(combination test)" and the previous process "PCA-04
(simple test)" is "2 (days)".
Further, from the production cost price information
216 shown in Fig. 20, since accumulated value of the
20 production cost price in the previous process "PCA-04
(simple test)" is "7 (M¥)", the non-synchronization degree
is integrated as "2(days) x 7 (M¥) = 14(day・M¥)". Further,
as for the production ID "CB-01", since the nonsynchronization
degree is "0 (day・M¥)", "14(day・M¥)" is
25 totally integrated.
36
The non-synchronization degree calculation unit 326
collects the value every component of the product, the
value being obtained by integrating accumulation of the
product cost price during the period between each
5 synchronization process and the previous process (S1745).
In the present embodiment, supposed that the nonsynchronization
degree information 223 shown in Fig. 22 is
produced from the non-synchronization degree every
component integrated in the process of S1735, description
10 will be done hereinafter.
Returning to the flowchart shown in Fig. 1, the
display control unit 327 respectively stores the
information of the production schedule plan every order
item stored in the memory unit 310, the production load for
15 the production resource every date, the non-synchronization
degree integrated in S1735 into the production schedule
plan information 221, the production load information 222
and the non-synchronization degree information 223 and
displays on the input-output unit 100 (S180).
20 The output screen example in the present embodiment
is indicated in Fig. 23. Although construction of the
output screen is as same as that in the first embodiment,
the total value of the non-synchronization degree is
represented as "day M¥" and such value is obtained by
25 integrating the period between the synchronization process
37
and the previous process by the production cost price (sum).
Based on the output screen, the user can grasp affects for
inventory due to staying of middle work in hand, against
the process in which production synchronization is not
5 realized. Further, it can be shown the item considering
plant management and the priority order of measures of
processes.
In the present embodiment, although the accumulated
value of the production cost price is utilized when the
10 non-synchronization degree is appreciated (S1735), it may
be utilized cost of the occupation area (area) of factory
or place occurring due to staying of middle work in hand.
Thereby, it can be made the priority order of measures
considering stock cost against large product or unit in
15 particular.
Third Embodiment
As a third embodiment, against the process in which
synchronization of production in a plurality of components
20 is demanded, it is indicated an example that the other
process in which the same production resource as the above
process is consumed during some period is extracted and it
is exchanged the order of the order item in which the above
process is conducted.
25 The production plan making assistance apparatus 10 of
38
the present embodiment, as shown in Fig. 24, has
construction in which item exchange candidate information
224 is added to the output information 220 of the storage
unit 200 in the construction of the production plan making
5 assistance apparatus 10 shown in Fig. 2 and item exchange
candidate extraction unit 328 is added to the operation
process unit 320 of the operation unit 300. Further, the
processes of the present embodiment will be described by
using the flowchart shown in Fig. 25 and description of the
10 processes as same as those in the first embodiment will be
omitted.
The item exchange candidate information 224 is
information to control item candidate having room to
improve the total non-synchronization degree by exchanging
15 injection order of each synchronization process and the
previous process. The item exchange candidate information
224 includes the information of the synchronization ID, the
order ID, the production ID, the process ID, the exchange
candidate order ID, the exchange candidate production ID,
20 the exchange candidate process ID. In the item exchange
candidate information 224 shown in Fig. 26, it is indicated
that the order ID "O-03", the production ID "CD-03", the
process ID "PCD-05 (combination test" exist as the exchange
candidate of the order ID "O-02", the production ID "CA-02",
25 the process ID "PCA-05 (combination test)" for the
39
synchronization ID "SO-02".
Next, according to the flowchart shown in Fig. 25, it
will be described operation of each function in the
production plan making assistance apparatus 10 in Fig. 24.
5 First, the data obtaining unit 321 obtains the order
information 211, the process information 212, the process
order information 213, the production ability information
214 and the production resource consumption information 215
(S100). Here, supposed that various kinds of information
10 shown in Figs. 3 to 7 are obtained, description will be
done hereinafter. Processes in S110 to S170 are as same as
those in the first embodiment, thus description thereof
will be omitted. Further, supposed that the production
schedule plan shown in Fig. 27 and the non-synchronization
15 degree information 223 shown in Fig. 28 are produced,
description will be done.
The item exchange candidate extracting unit 328
extracts the other order item and process having the common
production resource against each synchronization process
20 and the previous process (S190). For example, in the
production schedule plan shown in Fig. 27, when the process
"combination test of the order ID "O-03" shares the
production resource "R-a (combination test area)" against
the process "combination test) of the order ID "O-02", it
25 is extracted the information concerning the process
40
(combination test) of the order ID "O-03".
Further, as shown in the first record column of Fig.
26, the item exchange candidate extracting unit 328
attaches string to the exchange candidate order ID "O-03",
5 the exchange candidate production ID "CD-03", the exchange
candidate process ID "PCD-05" against the order ID "O-02",
the production ID "CA-02", the process ID "PCA-05
(combination test)" concerning the synchronization process
"SO-02" and produces the information of the item exchange
10 candidate information 224.
The display control unit 327 respectively stores the
information the production schedule plan stored in the
memory unit 310 every order item, the production load for
production resource every date, the non-synchronization
15 degree and the information of the item exchange candidate
within which string is attached into the production
schedule plan information 221, the production load
information 222, the non-synchronization degree information
223 and item exchange candidate information 224 and
20 displays on the input-output unit 100 (S185).
The output screen example of the present embodiment
is shown in Fig. 29. In construction of the output screen,
the "item exchange candidate display button" is added to
the contents (Fig. 16) of the first embodiment. When the
25 record of the table of the non-synchronization information
41
in Fig. 29 is selected and the "item exchange candidate
display button" is clicked, the information of the order ID,
the process name and the process ID is displayed in the
item exchange candidate column. Here, although the total
5 of the non-synchronization degree is not sorted in big
order so that comparison with Fig. 30 becomes easily
understandable in Fig. 29, the total may be sorted.
Here, when injection order of "combination test" is
exchanged to the order ID "O-03", "O-02", the output screen
10 example is shown in Fig. 30. In the non-synchronization
degree information shown in Fig. 30, the total of the nonsynchronization
degree is changed from "4" to "2" by
exchanging the injection order of "combination test".
Thereby, the total of the non-synchronization degree of the
15 order ID O-03", the process (combination test) is improved
from "4" to "2".
Further, comparing the production schedule plan
information column in Fig. 29 with that in Fig. 30, the
lead time of the order ID "O-03" is shortened from 20 days
20 (4/6 to 4/25) to 15 days (4/11 to 4/25) while not changing
the lead time of the order ID "O-02" (days from design to
forwarding).
As described in the above, the information concerning
the other order item consuming the same production resource can be displayed as the item exchange candidate. Based on this display, the user can effectively carry out the production schedule exchange to reduce middle work in hand or to realize shortening of the lead time against the process in which the synchronization of production cannot be done.

WE CLAIM:
1. A production plan making assistance apparatus for a product including a plurality of components, the production plan making assistance apparatus comprising: a storage unit for storing information of lead time in each process of a plurality of processes to produce each component, information of the process synchronizing in production of different component, information of production ability of production resource and information
of production resource consumption in each process; an input-output unit for displaying a process result; and an operation unit for processing the information stored in the storage unit; wherein the operation unit reads out the information stored in the storage unit and assigns a start date and a completion date in each process based on a process in which consumption of the production resource lies within the production ability and which synchronizes with the lead
time, and wherein the operation unit specifies the completion date assigned to each previous process in a plurality of synchronizing processes, specifies a start date assigned to the process continuing to the specified completion date,
calculates a total period between the specified completion date and the specified start date as a total nonsynchronization degree and outputs the calculated total non-synchronization degree to the input-output unit.
2. The production plan making assistance apparatus
according to claim 1, wherein the input-output unit displays names of a plurality of processes which synchronize and the calculated
10 total non-synchronization degree while corresponding the names and the total non-synchronization degree.
3. The production plan making assistance apparatus
according to claim 2,
15 wherein the input-output unit further displays
information of the start date and the completion date of
the process for producing the product and a process table
including information of date utilized for calculation of
the total non-synchronization degree.
20
4. The production plan making assistance apparatus
according to claim 3,
wherein the input-output unit further displays a
state of consumption of production resource occupying in
25 the production ability.
45
5. The production plan making assistance apparatus
according to claim 1,
wherein the input-output unit receives information
5 concerning a product and an order, and
wherein the input-output unit further adds up every
order unit that the calculated total non-synchronization
degree is received and displays the non-synchronization
degree corresponding to the received order
10
6. The production plan making assistance apparatus
according to claim 1,
wherein the operation unit specifies a second
completion date assigned to a second process previous to a
15 first process among a plurality processes which synchronize,
specifies a first start date assigned to the first process
and calculates a period between the second completion data
and the first start date as a first non-synchronization
degree,
20 wherein the operation unit specifies a fourth
completion date assigned to a fourth process previous to a
third process among a plurality processes which synchronize,
specifies a third start date assigned to the third process
and calculates a period between the fourth completion data
25 and the third start date as a third non-synchronization
46
degree, and
wherein the operation unit calculates a total of the
first non-synchronization degree and the third nonsynchronization
degree as a total non-synchronization
5 degree.
7. The production plan making assistance apparatus
according to claim 1,
wherein the operation unit operates as:
10 a process schedule assignment unit assigning the
start date and the completion date in each process based on
the process which synchronizes with the lead time;
a process load calculation unit for adding
consumption of the production resource till the assigned
15 completion date from the assigned start date;
a process ability judgement unit for comparing the
added consumption with the production ability and for
judging whether or not the added consumption exceeds the
production ability;
20 a production load leveling unit for shifting the
assigned start date and the completion date when judged
that the added consumption exceeds the production ability;
a non-synchronization degree calculation unit for
specifying the completion date assigned to the previous
25 process in each of a plurality processed which synchronize,
47
for specifying the start date assigned to the process
continuing to the specified completion date and for
calculating a total period between the specified completion
date and the specified start date as the total non-
5 synchronization degree; and
a display control unit for outputting the calculated
total non-synchronization degree to the input-output unit.
8. The production plan making assistance apparatus
10 according to claim 1,
wherein the storage unit further stores information
of production cost price till each process from a first
process,
wherein the operation unit specifies the completion
15 date assigned to the previous process in each of a
plurality processed which synchronize, specifies the start
date assigned to the process continuing to the specified
completion date and multiplies a period between the
specified completion date and the specified start date by
20 the production cost price up to the previous process and
calculates a total of multiplied result as the total nonsynchronization
degree and outputs the calculated nonsynchronization
degree to the input-output unit.
25 9. The production plan making assistance apparatus
48
according to claim 8,
wherein the input-output unit displays names of a
plurality of processes which synchronize and the calculated
total non-synchronization degree while corresponding the
5 names and the total non-synchronization degree.
10. The production plan making assistance apparatus
according to claim 1,
wherein the input-output unit receives information
10 concerning a plurality of products and orders,
wherein the operation unit assigns the start date and
the completion date in each process based on a process in
which consumption of the production resource lies within
the production ability every received order and which
15 synchronize with the lead time,
wherein the operation unit specifies the completion
date assigned to the previous process in each of a
plurality of processes which synchronize, specifies the
start date assigned to the process continuing to the
20 specified completion date and calculates a total period
between the specified completion date and the specified
start date as the total non-synchronization degree,
wherein the operation unit outputs to the inputoutput
unit information of the total non-synchronization
25 degree calculated for a first order and a synchronizing
49
process for a second order when a synchronizing process for
the first order among a plurality of received processes and
a synchronizing process for the second order among a
plurality of received orders shares same production
5 resource.
11. The production plan making assistance apparatus
according to claim 10,
wherein the input-output unit displays names of a
10 plurality of synchronizing processes for the first order
and the calculated total non-synchronization degree while
corresponding the names and the total non-synchronization
degree and displays information of a synchronizing process
for the second order as an item exchange candidate.
15
12. The production plan making assistance apparatus
according to claim 11,
wherein the input-output unit receives instruction of
item exchange, and
20 wherein the operation unit assigns the start date and
the completion date to each process against the first order
after assigning the start date and the completion date to
each process against the second order.
25 13. A production plan making assistance method for a
50
product including a plurality of components,
a computer stores information of lead time in each
process of a plurality of processes to produce each
component, information of the process synchronizing in
5 production of different component, information of
production ability of production resource and information
of consumption of the production resource in each process,
wherein the computer reads out the stored information,
assigns a start date and a completion data to each process
10 based on a process in which consumption of the production
resource lies within the production ability and which
synchronizes with the lead time, specifies a completion
date assigned to each previous process among a plurality of
synchronizing processes, specifies a start date assigned to
15 the process continuing to the specified completion date,
calculates a total period between the specified completion
date and the specified start date as a total nonsynchronization
degree and outputs the calculated total
non-synchronization degree to the input-output unit.
20
14. The production plan making assistance method
according to claim 13,
wherein names of a plurality of processes which
synchronize and the calculated total non-synchronization
25 degree are displayed while corresponding the names and the
51
total non-synchronization degree.
15. The production plan making assistance method
according to claim 14,
5 wherein information of the start date and the
completion date of the process for producing the product
and a process table including information of date utilized
for calculation of the total non-synchronization degree are
displayed.