1. A machining support apparatus comprisinga machining monitoring unit which, upon receiving a notification via a 5 communication unit from a machine tool controller controlling a machine tool, indicating a detection of a simulation start code programmed in a machining program, renders the machine tool controller to stop the machine tool; a simulation processing unit which simulates instructions in the 10 machining program from the simulation start code to a simulation end code while the machine tool is stopped; and a display unit which displays a simulation performed in the simulation processing unit.

2. The machining support apparatus according to claim 1, 15 wherein the simulation start code and the simulation end code are unused codes ! among codes used in a machining program.

3. The machining support apparatus according to claim 1, wherein 20 a predetermined set distance is set in the machining support apparatus, and the machining monitoring unit monitors a distance between a workpiece and a tool, and performs a predetermined processing when the distance between the workpiece and the tool becomes less than or equal to the 25 predetermined set distance.

4. The machining support apparatus according to claim 3, wherein 1 the predetermined processing is configured to stop an operation of the machine tool. 30 5. The machining support apparatus according to claim 1, wherein 34 a size of a tool is specified smaller than an actual size thereof, in the machining support apparatus, and the said specification can be made for each parameter of the tool.

6. The machining support apparatus, according to claim 1, further comprising'- 5 a machining navigation unit which, at a predetermined machining stage during machining, displays information about procedures necessary to perform the machining stage, and the next machining stage is not allowed to proceed thereto, unless information indicating that all procedures have been completed is inputted via an input unit. 10 7. A machining support system comprising: a machining support apparatus which, upon receiving a notification via a communication unit from a machine tool controller controlling a machine tool, indicating a detection of a simulation start code programmed in a machining program, transmits an instruction to 15 stop the machine tool to the machining tool controller, simulates instructions from the simulation start code to a simulation end code in the machining program, and displays the said simulation; and the machining tool controller which controls the machine tool, upon detecting the simulation start code, transmits a notification 20 indicating a detection of the simulation start code to the machining support apparatus, and upon receiving an instruction to stop the machine tool from the machining support apparatus, stops the machine tool.

8. A machining support apparatus, substantially as herein described with 25 reference to accompanying drawings and examples.

9. A machining support system, substantially as herein described with reference to accompanying drawings and examples.

DESCRIPTION
Title: MACHINING SUPPORT APPARATUS AND MACHINING SUPPORT
SYSTEM
^ FIELD OF THE INVENTION
5 [0001] The present invention relates to a machining support apparatus, which
supports machining according to a machining program, and a machining
support system.
DESCRIPTION OF RELATED ART
[0002] A machining using a NC (Numerical Control) machine (hereinafter
10 referred to as a machine tool) proceeds automatically according to an NC
program.
As a monitoring system of such a machine tool, a robotic offline
programming device or the like, being capable of simulation by performing
the same operation as that of the actual machine, is disclosed (Patent
15 Literature 1, for example).
Prior Art Literature
[0003] PATENT LITERATURE:
1. Japanese Patent Application Publication No. 2010-218036 A
Problems to be solved by the Invention
20 [0004] At the machine tool described above, the machining proceeds
automatically according to the NC program. It is preferable that the
machining proceeds automatically from the viewpoint of improving
machining efficiency, but, if there is an error in the NC program, there is a
problem that the machining proceeds without the error being noticed.
25 In addition, in order to perform accurate machining, there are cases
where the user of the machine corrects set values in the middle of the
processing. At this time, there is a risk that an incorrect value is entered,
causing an incorrect machining as entered.
[0005] Incidentally, in order to prevent the machining from proceeding in a
30 state where there is an error in the NC program or a mounted tool is
incorrect, a dry run (insubstantial work) is performed. By operating the tool
2
«
according to the NC program in a state that the tool is distant from the
workpiece, it is intended to confirm whether or not there is an error in the
NC program.
[0006] However, as the dry run is performed in the state that the tool is away
5 from the workpiece, that is, in a state where the coordinate values of the tool
are shifted, it is difficult to confirm whether the correct coordinate values are
inputted.
In order to solve such a problem, there is a method called soft dry run to
simulate a dry run in software.
10 However, if the soft dry run is performed from the beginning to the end of
the processing, it is not practical because it takes a lot of time.
[0007] The present invention has been made in view of such a background,
intending to facilitate verifying an operation of a machine tool.
BRIEF SUMMARY OF THE INVENTION
15 [0008] In order to solve the problems described above, a simulation start code is
inserted in the machining program, according to the present invention, and
when the simulation start code is detected, the machining program below the
simulation start code is simulated in a state that the machine tool is stopped,
and the simulation is displayed on the display unit.
20 [0009] According to the present invention, it is possible to verify a machining of
a machine tool easily.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] FIG. 1 is a diagram showing an exemplary configuration of the
machining support system according to the present embodiment.
25 FIG. 2 is a diagram showing an exemplary hardware configuration of a
machining support apparatus according to the present embodiment.
FIG. 3 is a diagram showing an exemplary hardware configuration of a
machine tool controller according to the present embodiment.
FIG. 4 is a first view showing the appearance of the machining support
30 system according to the present embodiment.
3
FIG. 5 is a second view showing the appearance of the machining support
system according to the present invention.
FIG. 6 is a first flowchart showing a procedure of the machining support
apparatus according to the present embodiment.
5 FIG. 7 is a second flowchart showing a procedure of the machining
support apparatus according to the present embodiment.
FIG. 8 is a third flowchart showing a procedure of the machining support
apparatus according to the present embodiment.
FIG. 9 is a flowchart showing a procedure of the machine tool controller
10 according to the present embodiment.
FIG. 10 is an example of an input screen for machining preparation
information according to the present embodiment.
FIG. 11 is an example of an input screen for required material
information according to the present embodiment.
15 FIG. 12 is a diagram showing an example of an input screen for
machining information according to the present embodiment.
FIG. 13 is a diagram showing an example of a display screen for
machining status according to the present embodiment.
FIG. 14 is a first diagram showing an example of a tool registration
20 screen according to the present embodiment.
FIG. 15 is a second diagram showing an example of a tool registration
screen according to the present embodiment.
FIG. 16 is a third diagram showing an example of a tool registration
screen according to the present embodiment.
25 FIG. 17 is a fourth diagram showing an example of a tool registration
screen according to the present embodiment.
DETAILED DESCRIPTION OF THE INVENTION
[0011] Next, a detailed description will be given of an aspect for implementing
the present invention (hereinafter referred to as an "embodiment"), with
30 reference to the accompanying drawings.
System Configuration
4
:
;
[0012] FIG. 1 is a diagram showing an exemplary configuration of a machining
support system according to the present embodiment.
As shown in FIG. 1, a machining support system 10 includes a machine
tool controller 2 for controlling a machine tool 3, and a machining support
5 apparatus 1 for sending instructions to the machine tool controller 2 and
setting an NC program, that is, a machining program, wherein the machine
tool controller 2 and the machining support apparatus 1 are connected to
each other via a network 6 such as a corporate LAN (Local Area Network). In
addition, also connected to the network 6 is a CAD/CAM (Computer Aided
10 Design and Computer Aided Manufacturing) system database 5, where data
about tools, 3D CAD data or the like is stored.
The machining support apparatus 1 is connected with a measurement
apparatus 4 that is a laser measurement device or the like for measuring a
size of the tool and a distance between the tool and the workpiece, and inputs
15 measurement results to the machining support apparatus 1.
Apparatus Configuration
[0013]
FIG 2 is a diagram showing an exemplary hardware configuration of the
machining support apparatus according to the present embodiment.
20 The machining support apparatus 1 is a PC (Personal Computer) or the
like, and includes a memory 100, a CPU (Central Processing Unit) 120, a
storage device 160 such as a hard disk, a communication device
(communication unit) 130 that performs communication with externals, an
input device (input unit) 140 such as a keyboard and a mouse, and a display
25 device (display unit) 150 such as a display.
A program stored in the storage unit 160 is loaded into the memory 100,
and executed by the CPU 120, thereby embodying a processing unit 110, a
machining navigation unit 111, a machining monitoring unit 112, and a
simulation processing unit 113.
5
As shown in FIG. 2, the processing unit 110 includes a machining
navigation unit 111, a machining monitoring unit 112, and a simulation
processing unit 113.
The machining navigation unit 111 sets up the machine tool controller 2,
5 upon receiving machining preparation information and machining
information via the input device 140, or installs an NC program in the
machine tool controller 2.
The machining monitoring unit 112 receives the information about the
status of the machine tool 3 from the machine tool controller 2, and monitors
10 whether or not any interference occurs.
The simulation processing unit 113 stops the machine tool 3, upon
detecting a simulation start code (to be described later) inserted in the NC
program, and simulates the NC program from the simulation start code to a
simulation end code (to be described later).
15 [0014]
FIGS. 4 and 5 are views showing the appearance of the machining
10 support system according to the present embodiment. Here, by assuming that
a front direction is where the tool is mounted, FIG. 4 is an external view from
diagonally forward right, and FIG. 5 is an external view from diagonally
forward left.
Note that, in FIGS. 4 and 5, the same components as those in FIG. 1 are
15 denoted by the same reference numerals, and the description thereof will be
omitted.
The machine tool 3 performs machining on a workpiece 31 using a tool 32.
It is common, as shown in FIG. 5, that the machine tool controller 2 is
installed in the vicinity of the machine tool 3. Further, a PC as a machining
20 support apparatus 1 and the measurement apparatus 4 is installed in the
vicinity of the machine tool 3.
Note that the tool 32 is attached to the machine tool 3 via an attachment
33.
The machining support apparatus 1 and the machine tool controller 2 are
25 connected to each other via the network 6, such as the LAN and the internet,
as shown in FIG. 1.
In FIG. 4, the machining support apparatus 1 is placed in the vicinity of
the machine tool 3 for the sake of convenience, but it is also possible to place
the machining support apparatus 1 at a distance from the machine tool 3, for
30 example, such as in another room different from that of the machine tool 3
and a manufacturing plant overseas.
7
Note that the operation of the machining support apparatus 1 may be
performed through a monitor of a machine operation panel 34.
Procedure
[0017] Processing proceeds in the order of machining preparation and
5 machining, and for machining preparation, there can be cases where the
machining navigation unit 111 is utilized and where not utilized.
Hereinafter, procedures of the present embodiment will be described for a
case where the machining navigation unit 111 is utilized, with reference to
FIGS. 1-5 as appropriate. A case where the machining navigation unit 111 is
10 not utilized will be described later.
[0018] An operation of the machining support apparatus 1 is possible in two
ways, an operation via the machine control panel 34 of the machine tool 3, or
an operation via the input device 140 of the machining support apparatus 1.
Here, it is assumed that the machining support apparatus 1 is operated via
15 the input device 140 installed in the machining support apparatus 1.
[0019]
FIGS. 6-8 are flowcharts showing a procedure of the machining support
apparatus according to the present embodiment.
First, a machining preparation is started by the machining navigation
20 unit 111 of the machining support apparatus 1 via the input device 140 (S101
in FIG. 6).
The machining navigation unit 111 displays a machining step name to be
executed on the display device 150, based on the master information
necessary for product manufacturing. At the same time, the machining step
25 name may be displayed on the display device of the machine operation panel
34 of the machine tool 3. The master information is, for example, machining
step information and the like which is stored in the storage device 160 of the
machining support apparatus 1 or a machining step management system
database (not shown).
30 It should be noted that this display may be substituted with a flashing of
a machining step name, a voice output thereof via a speaker, or the like.
8
*
Further, it is possible to instruct a user either with characters displayed on
the display device 150, or with voices in a language which the user can
understand.
[0020] Next, when a machining step name on display is selected via the input
5 device 140, the machining navigation unit 111 displays machining
preparation information necessary for the machining on the display device
150 (S102). The machining preparation information will be described later.
[0021] The user attaches required materials (a workpiece 31, a mounting jig 35,
a tool 32, an attachment 34, and so forth) to the machine tool 3 according to
10 the machining preparation information displayed on the display device 150.
Here, the mounting jig 35 is configured to support the workpiece 31 when
attaching (or mounting) the workpiece 31 to the machine tool 3.
Then, after installing the required materials to the machine tool 3,
information of the required materials just installed is input to the machine
15 tool controller 2 via the input device 140. Information on the required
materials will be described later.
[0022] It should be noted that the information input on the required materials
may be input via the machine control panel 34. Alternatively, through
transmission to the machine tool controller 2 from the measurement
20 apparatus 4 that measures a position of the workpiece 31 and the shape of
the tool 32, information on the required materials may be input to the
machine tool controller 2.
[0023] Next, the machining support apparatus 1 determines whether or not an
automatic processing is selected as a processing method (S103). This is
25 determined whether a button for automatic processing is selectively input or
a button for manual processing is selectively input, which buttons are
displayed on the display device 150.
As a result of step S103, when the automatic processing is selected (Yes
at S103), the machining navigation unit 111 transmits an NC program to
30 perform machining to the machine tool controller 2 (S104), and the machine
9
tool controller 2 installs the transmitted NC program as the main program of
the machine tool 3.
[0024] When the automatic processing is not selected (No at S103), that is,
when the manual processing is instructed, a dummy program for signaling
5 the machining to be started is transmitted to the machine tool controller 2
(S105), then the machine tool controller 2 installs the dummy program as the
main program. Here, description will be given, assuming that the NC
program is installed as the main program.
[0025] It should be noted that the machining navigation unit 111 may
10 determine whether or not the information inputted to the machine tool
controller 2 for starting machining is enough, for example, by making a
comparison with the information inputted to the machine tool controller 2 via
the machine tool 3 and the machining preparation information.
The machining navigation unit 111 constantly monitors the input
15 information to the machine tool controller 2 after the processing is started,
and when the enough information is inputted, the machining navigation unit
111 transmits a machining preparation ready signal to the machining
monitoring unit 112 and the machine tool controller 2 (S106).
[0026] Upon receiving the machining preparation ready signal from the
20 machining navigation unit 111, the machining monitoring unit 112 extracts
configuration information (machining information) required for monitoring
machining from the CAD/CAM system database 5, and displays the result as
machining information (S107). Displaying the machining information will be
described later. The user may adjust or set the machining information on
25 display.
Then, the machining monitoring unit 112 retrieves information from the
machine tool controller 2, and displays current (when installed) status
(installed status) of the required materials on the display device 150 (S108).
Displaying the installed status will be described later.
30 [0027] The machining monitoring unit 112 transmits a machining monitoring
preparation ready signal to the machine tool controller 2 (S109).
10
Then, the machining monitoring unit 112 displays information indicating
to be in a state of a machining start enabled on the display device 150, and
goes into a machining monitoring started status.
[0028] Upon receiving the machining monitoring preparation ready signal from
5 the machining monitoring unit 112 of the machining support apparatus 1, the
machine tool controller 2 enters into a machining start enabled state.
Accordingly, an interlock of the machine tool controller 2 is released.
After verifying the machining start enabled information displayed on the
display device 150, the user instructs starting machining to the machine tool
10 controller 2, by entering information to start a machine operation for the
subject machining in the machining support apparatus 1 via the input device
140 (SI 10). The processing at step SI 10 is performed, for example, by the
machine operation start button displayed on the display device 150 being
selectively inputted via the input device 140.
15 [0029] At this time, if an automatic machining is specified, a cycle start button
is activated, and if a manual machining is specified, performed by the user
are a rotation of the tool 32, an angle change of the rotary table, coolant
operation for cooling water, cooling oil, or cooling mist, and so forth.
[0030] Upon receiving information to start a machine operation, the machine
20 tool controller 2 performs machining by controlling the machine tool 3.
In the machining monitoring started status, the machining monitoring
unit 112 always receives coordinate values of the tool 32 (all coordinate
values of linear axis systems and rotary shaft systems in production) in the
machine tool 3 from the machine tool controller 2. Upon receiving the
25 coordinate values of the tool 32, the machining monitoring unit 112
immediately moves operation nodes of the machine tool 3 to meet changed
coordinates, thereby operating the three-dimensional model of the tool 32 on
the display device 150. That is, based on the coordinate values of the tool 32
of the machine tool 3 obtained from the machine tool controller 2, the
30 machining monitoring unit 112 operates the three-dimensional model of the
machine tool 3 displayed on the display device 150.
11
While operating such three-dimensional model linked with the machine
tool 3, the machining monitoring unit 112 continues to monitor the machine
tool 3 until the end of the machining.
[0031] Further, the machining monitoring unit 112 calculates a distance
5 between the machining area of the tool 32 (a dead band to be described later
, is set) and each of the required materials other than the tool 32, from the
measuring by the measurement apparatus 4.
Then, the machining monitoring unit 112 determines whether or not the
distance between the tool 32 and each of the required materials is less than
10 or equal to a predetermined minimum distance (set distance) ( S i l l in FIG. 7).
As a result of step S i l l , if the distance between the tool 32 and each of
the required materials is greater than the predetermined minimum distance
(No at S i l l ) , the machining support apparatus 1 proceeds the processing to
step SI 13.
15 The required materials are, as described above, the workpiece 31, the
mounting jig 35, the tool 32, the attachment 34, and the like.
[0032] As a result of step S111, if the distance between the tool 32 and each of
the required materials is less than or equal to the predetermined minimum
distance (Yes at S i l l ) , the machining monitoring unit 112 determines as an
20 approach distance error and performs an approach distance error processing
(SI 12).
The approach distance error processing indicates the approach distance
error to the user by changing color on the display device 150 of the required
materials such as the tool 32 and the workpiece 31, or displaying a warning.
25 Alternatively, the machining monitoring unit 112 may send a movement stop
signal for the tool 32 to the machine tool controller 2, thereby stopping the
machine tool 3. It is possible for the user to specify via the input device 140 of
the machining support apparatus 1 about what process is performed when
the approach distance error is determined.
30 Note that when the machining is normal, the tool 32 and the workpiece
31 are displayed, for example, in green.
12
[0033] Here, when the approach distance error processing at step Si 12 is to
stop the machine tool 3, a machining resumption instruction is sent to the
machine tool controller 2 via the input device 130. Upon receiving the
machining resumption instruction, the machine tool controller 2 resumes the
5 machining of the machine tool 3.
Based on coordinate values of the tool 32 transmitted from the machine
tool controller 2 and so forth, the machining monitoring unit 112 is always
determining whether or not interference has occurred (Si 13). Here, an
occurrence of interference means that the machining monitoring unit 112
10 determines that a portion of the machining to be completed is already made
on the workpiece 31. There are efforts to prevent interference in the
processing at step S112, and steps S116-S119, S121, to be described later, but
still the interference may occur at the stage of actual machining. Step Si 13 is
a process to minimize the interference in case such a situation has occurred.
15 [0034] As such a reason that interference occurs at the stage of actual
machining, there are possibilities, when the workpiece 31 is large, of
positioning accuracy error of the machine tool 3, effects of thermal expansion
of the machine tool 3 and/or the workpiece 31, or the like. Another possibility
is an error that occurs when human interruption is made, in order to prevent
20 the failure of the machined surface due to unpredictable phenomenon in
general, such as wear of the tool 32 and vibration, in an automatic operation
within a scope of the machining tolerance, where human interruption
includes manual pulse handle operation, spindle rotation speed change,
feeding speed change, or the like. For these reasons, there is a case where
25 unpredictable phenomenon occurs in the processing at step Si 12, or steps
S116-S119, S121, to be described later. As described above, the processing at
step Si 13 is intended to minimize the interference to the actual machining in
such a case.
[0035] As a result of step S113, if the interference has not occurred (No at S113),
30 the machining support apparatus 1 and the machine tool controller 2
proceeds to step SI 16.
13
As a result of step S113, if the interference has occurred (Yes at S113),
the machining monitoring unit 112 immediately instructs the machine tool
controller 2 to stop machining (Si 14), and the machining is stopped.
[0036] It should be noted that, by using the attributes of the three-dimensional
5 CAD data at the tool 32, the machining monitoring unit 112 regards a contact
between a machining portion of the tool 32 (dead band to be described later is
set) and the workpiece 31 as machining. Further, the machining monitoring
unit 112 operates by removing a cubic content that encompasses the
machining portion of the tool 32, and determines a contact with a three
10 dimensional shape of the workpiece, for which the machining is to be
completed, as a normal machining, while determines as a machining error
(interference) when a three-dimensional shape of the workpiece, for which the
machining is to be completed, is encompassed. If it is determined that the
interference has occurred, the machining monitoring unit 112 detects the
15 interference as an error, as described above, and immediately transmits a
movement stop signal for the tool 32 to the machine tool controller 2.
[0037] However, when the three-dimensional shape of the workpiece, for which
the machining is to be completed, is in contact with the tool 32, as some
errors are included in the actual operation of the machine tool 3 even if the
20 command values from the machine tool controller 2 are normal, there is a
problem that it is determined to have interference at the portion where a
contact is expected. In addition, as it is often difficult to create a shape by
considering the tolerance value for a shape of the normal workpiece, for
which the machining is to be completed, there is a problem that it is
25 determined to have interference if machining is performed with a shift by the
machining tolerance. For example, as a three-dimensional model of the tool
32 has a very small stepped shape rather than a full circle, a convex portion
of the stepped shape encompasses a region, for which the machining is to be
completed, even during the normal machining. Accordingly, there is a case
30 that the machining monitoring unit 112 incorrectly determines even during
the normal machining that the interference has occurred.
14
[0038] That is, as the three-dimensional model of the tool 32 has a stepped
profile centering around the contour of the actual tool, a convex portion of the
stepped profile is set outside the contour of the actual tool. Accordingly, even
when the tool 32 is not in contact with the workpiece 31 actually, or the
5 contour of the tool 32 is in contact with the workpiece 31, the machining
monitoring unit 112 incorrectly determines that the tool 32 is cutting into the
workpiece 31.
[0039] In this embodiment, in order to avoid the interference caused by
movement errors and/or machining tolerances of the machine tool 3 (i.e.,
10 erroneous interference caused by the stepped shape of setting of the tool 32),
there is a function to set the shape of the tool 32 slightly smaller than the
actual size. The area that is made smaller is referred to as a dead band. It is
possible to specify the dead band for each of parameters, such as the
longitudinal and the width directions of the tool 32 that affect the dimensions
15 of width and depth in the machining, or the diameter. The dead band may be
changed in real shape relative to the actual shape of the tool 32 instantly, for
each of the tools 32 and for each kind of machining if necessary, and may be
changed during machining even further.
For example, it is desirable to match the convex portion of the stepped
20 profile to the contour of the actual tool.
[0040] In addition, it is possible for the machining monitoring unit 112 to detect
an error, by determining all as the machining error (interference) when a
machining portion of the tool 32 contacts or encompasses the required
materials other than the workpiece 31 (inclusive the mounting jig 35). Also in
25 this case, the machining monitoring unit 112 immediately transmits a
movement stop signal for the tool 32 to the machine tool controller 2.
[0041] Upon receiving the machining stop instruction transmitted at step Si 14,
the machine tool controller 2 stops the machine tool 3 according to the
movement stopping ladder circuit. Then, the user inspects the machine tool 3
30 that is stopped, and verifies the cause of the interference.
15
[0042] Upon completing the inspection, the machining resumption instruction
is input to the machining support apparatus 1 via the input device 140. The
1 machining support apparatus 1, to which the machining resumption
instruction is input, instructs the machine tool controller 2 to resume the
5 machining (Si 15), and in turn the machine tool controller 2 makes the
machine tool 3 resume the machining.
[0043] The machining monitoring unit 112 determines whether or not the
simulation start code inserted in the NC program is detected (SI 16 in FIG. 8).
As a result of step SI 16, if the simulation start code is not detected (No at
10 Si 16), the machining monitoring unit 112 proceeds to step S121.
As a result of step SI 16, if the simulation start code is detected (Yes at
Si 16), by transmitting a movement stop instruction to the machine tool
controller 2, the machining monitoring unit 112 instructs the machine tool
controller 2 to stop machining (Si 17). At this time, the machining monitoring
15 unit 112 obtains coordinates, where the tool 32 is stopped, from the machine
tool controller 2.
[0044] Then, the simulation processing unit 113 performs a simulation
processing to simulate a portion enclosed with a simulation start code and a
simulation end code (referred to as a simulated portion) in the NC program
20 (SI 18).
Specifically, the simulation processing is performed in the following
procedure.
[0045] (al) First, the simulation processing unit 113 extracts programming
contents enclosed with the "simulation start code" and the "simulation end
25 code" (simulated portion) within the NC program from the machine tool
controller 2.
(a2) Next, the simulation processing unit 113 decodes the extracted
portion of the NC program using a NC program decoding function.
(a3) Then, the simulation processing unit 113 displays a simulated
30 movement of the tool 32 according to the decoded portion of the NC program
on the display device 150. At this time, the machine tool 3 remains stopped.
16
That is, in the simulation processing, the simulation processing unit 113
displays on the display device 150, in the state that the machine tool 3 is
i
stopped, what the machine tool 3 simulates an operation of the simulated
portion of the NC program. For this display, description will be given later.
5 [0046] As the simulation start code, it is desirable to use, for example, an
unused code (e.g., "M100") in M codes used in the NC program. Similarly, as
the simulation end code, it is desirable to use an unused code (e.g., "M101") in
the M codes. In this case, the portion enclosed with "M100" and "M101" in the
NC program becomes the simulated portion.
10 Thus, by using unused codes in the M codes, it is possible to perform a
simulation processing according to the present embodiment, without
changing the NC program or the system significantly.
Incidentally, it is obvious that the simulation start code and the
simulation end code are not limited to the M codes.
15 [0047] At this time, for example, if an extracted NC program is a move
command, the simulation processing unit 113 executes a move command only
for a graphic on the display unit 150. That is, the machining support I
apparatus 1 performs a simulated operation (simulated processing) of the I
machine tool 3, by moving a graphic of the machine tool 3 on the display
20 device 150, while the actual machine tool 3 is stopped. Operating speed of the
graphic of the machine tool 3 is adjustable in the simulated operation, either
for making it faster or slower.
Note that the simulation start code and the simulation end code can be
inserted in the NC program any number of times.
25 [0048] The simulation processing unit 113 determines whether or not a I
simulation processing is ended (S119). An instruction of the simulation end is 1
determined, for example, whether or not the simulation processing is
executed normally until the simulation end code in the NC program.
Alternatively, the simulation processing unit 113 may execute the simulated
30 processing repeatedly, until information indicative of completing the
simulation is input via the input device 140. In this case, a determination
17
performed at step Si 19 is whether or not an end of the simulation has been
input via the input device 140.
[0049] As a result of step S119, if the simulation has not ended (No at S119), I
the simulation processing unit 113 repeats the simulation processing. I
5 As a result of step S119, if the simulation has ended (Yes at S119), the I
machining monitoring unit 112 instructs the machine tool controller 2 to 1
resume machining, by transmitting a machining resumption instruction to I
the machine tool controller 2 (S120). Upon receiving the machining I
resumption instruction, the machine tool controller 2 makes the machine tool
10 3 resume machining.
[0050] Thus, by performing simulation processing of the simulated portion, it is
possible to verify whether or not there is an error in the machining I
preparation information for the required materials attached to the machine I
tool 3 or in the NC program. For example, as the machining preparation 1
15 information is input by the user via the input device 140, there may be an J
error in the input. J
In addition, it is possible for the user, through the simulation processing,
to partially simulate and verify in advance whether or not interference occurs.
Note that it is preferable that the simulated portion is specified according to
20 the replacement of the tool 32 or the like.
[0051] Further, based on the measurement result by the measuring apparatus
4, the machining monitoring unit 112 is always calculating the shortest
distance between the tool 32 and the workpiece 31. I
[0052] The machining monitoring unit 112 determines whether or not a j
25 distance between the tool 32 and the workpiece 31 is less than or equal to a 1
predetermined specified tool distance (set distance) (S121). 1
As a result of step S121, if the aforesaid distance is not less than or equal I
to the specified tool distance (No at S121), the machining monitoring unit 112 I
returns the processing to step S i l l , and repeats the processing at steps S i l l - . I
30 S123 until the end of machining is instructed. I
18
[0053] As a result of step S121, if the aforesaid distance is less than or equal to
the specified tool distance (Yes at S121), the machining monitoring unit 112
performs a specified tool distance processing (S122).
The specified tool distance processing is, for example, to stop the machine
5 tool 3 or to notify the user.
For example, by specifying 100 mm, for instance, as the specified tool
distance, the machine tool 3 is stopped when the distance between the tool 32
and the workpiece 31 becomes 100 mm.
[0054] Specification of the specified tool distance is useful, for example, when a
10 machining start coordinate is distant from the workpiece 31 and the first
positioning cannot be measured. For example, by stopping the machine tool
every time (it is possible to skip at the second time and beyond) at a fixed
position just before machining, the user may then measure the distance
between the tool 32 and the workpiece 31, using a scale or the like. This
15 allows the user to verify whether or not the distance between the tool 32 and
the workpiece 31 is significantly different from an expected distance for
stopping, thereby preventing an operation error from occurring.
[0055] In other words, this allows the user to verify a case just before the
machining such that, even if an input to the machine tool controller 2 has
20 been made as planned, a material attached to the machine tool 3 has been
incorrect.
In addition, when the tool 32 is moved manually with a high speed in any
direction in the large machine tool 3, a braking distance from a stop
command position becomes large. Therefore, as it possible to instantly
25 command the machine tool, by specifying a distance assuring an absolute
stop as the specified tool distance, either to stop immediately or slow down
when the tool 32 has come to a position beyond the specified tool distance,
there is also an effect of preventing a collision of the tool 32.
[0056] Alternatively, by making it possible to change the specified tool distance
30 at any time, it is also possible to continuously specify prohibited distances
according to the speed of the tool 32. This allows effective collision prevention.
19
Furthermore, the specified tool distance may be specified for each
machining portion of the workpiece 31.
Then, resuming machining is instructed via the input device 140 (S123),
and the machine tool controller 2 resumes machining. Thereafter, the
5 processing unit 110 returns the processing to step S i l l , and repeats the
processing at steps S111-S123 until the end of machining is instructed.
[0057] It is possible for the machining monitoring unit 112 to start a
preparation for monitoring, even when not using the machining navigation
unit 111, by selecting, via the input device 140, a dummy program for
10 notifying the machining to start or a NC program for machining (by
referencing conventional work instruction documents for the correct one).
Then, upon completion of the preparation for monitoring, by releasing an
interlock of the machine tool 3 via the input device 140 or the like, it becomes
possible to start machining. That is, it is also possible to start machining with
15 a manual operation via the input unit 140.
[0058] It should be noted that the processing at steps S i l l , S113, S116, and
S121 need not be performed in this order, and may be performed in any
order, or in parallel.
[0059]
FIG. 10 is an example of an input screen for machining preparation
information, according to the present embodiment.
A machining preparation information input screen 300 is a screen
displayed on the display device 150 at step S102 in FIG. 6.
15 As shown in FIG. 10, the machining preparation information input screen
300 displays a step name, a workpiece name, a method of mounting the
workpiece 31, a machining portion, a tool name, and the like. Besides,
information about accessories such as a holder name of the tool 32, a
machining cutting tool, and a tool 32, processing conditions, information
20 related to an attachment, or the like may be displayed.
[0065] In addition, a machining procedure template 310 is displayed on the
machining preparation information input screen 300.
I Those displayed as the machining procedure template 310 are, as shown
in FIG. 10, a name of the mounting jig 35 (jig name) for fixing the workpiece
25 31, a placing position of the workpiece 31, a mounting direction of the tool 32,
and a mounting position of the tool 32. In addition to the above information,
those displayed as the machining procedure template 310 may be a type of
the attachment, a type of the tool 32, reference dimension when mounting the 1
tool, a rotational speed of the tool 32, a moving speed of the tool 32, or the like.
30 Further, those displayed as the machining procedure template 310 may be, a
portion to be measured after completion of the machining in order to verify
22
whether the workpiece 31 is machined as intended, the measurement
apparatus 4 used for the measurement. Furthermore, those displayed as the
machining procedure template 310 may be machining dimensions to be
targeted for the measurement, information about the workpiece 31, the
5 mounting jig 35, the tool 32, a measurement device, the attachment, or the
like. Moreover, those displayed as the machining procedure template 310 I
may be a storage location of each of the required materials for machining, an 1
operation sequence (operation procedure of an interlock circuit) of mounting I
required materials and operating machining, or the like. J
10 [0066] The machining preparation information input screen 300 is displayed for 1
each of the predetermined steps (e.g., attaching a tool, verifying a tool, or the
like), prompting the user to verify each step.
For each information item displayed on the machining preparation
information input screen 300, a check window 320 is displayed.
15 While verifying the steps on the machining preparation information
display screen, the user performs mounting the required tool 32 and the like.
And, upon completion of each of steps on the machining preparation
information input screen 300, the user selects the corresponding check
window 320 for input. Then, a check mark appears in the check window 320.
20 It may be designed such that the user cannot proceed to the steps ahead,
without inputting checks in all of the check windows 320. Note that any given
checking windows 320 may be disabled.
By doing so, it is possible to prevent a procedural error. Further, the 1
check window 320 may be omitted. I
25 [0067] It should be noted that the machining preparation information input
screen 300 may be displayed on the machine operation panel 34 (FIG. 4, FIG.
5) of the machine tool 3. Then, while attaching the required materials, the
user may input a check in the check window 320 via a touch panel of the
machine operation panel 34, or the like. By doing so, as the machining
30 preparation information input screen 300 is displayed near the work area, it
becomes easier to verify steps, to input the check windows 320, or the like. In
23
this case, it may be designed such that, upon completion of input in all of the
check windows 320 of the machining preparation information input screen
300, that information is sent to the machining support apparatus 1 and the
machine controller 2, and the processing is allowed to proceed to the next
5 operation.
Here, the machining preparation information input screen 300 may be
displayed on the machine operation panel 34 only when performing
operations for the machine tool 3. In this case, when working at the
machining support apparatus 1 or the machine tool controller 2, the I
10 machining preparation information input screen 300 may be displayed on the J
display unit 150 of the machining support apparatus 1, or a display device I
(not shown) of the machine tool controller 2. 1
[0068] Note that in the present embodiment, upon completion of the input to all I
of the check windows 320, the processing is allowed to proceed to the next
15 operation, but it is not limited thereto, and the processing may proceed to the
next operation, by an "end button" (not shown) being selected. 1
[0069]
FIG. 11 is an example of a required material information input screen
according to the present embodiment. J
20 The required material information input screen 400 is a screen displayed J
on the display device 150 after step S102 in FIG. 6. 1
As shown in FIG. 11, those displayed on the required material I
information input screen 400 are input windows for inputting information 1
such as the origin of the workpiece 31 (workpiece origin), the difference value I
25 between the origin of the machine tool 3 and the origin of the workpiece 31 1
(origin difference value). I
[0070] Those displayed on the required material information input screen 400, I
besides above, may be input windows for inputting coordinate values of the
machine tool 3 corresponding to the origin of the workpiece 31, a difference
30 value between the origin of the machine tool 3 and the origin of the tool 32,
and coordinate values of the tool 32 corresponding to the origin of the
24
workpiece 31. In addition, those displayed on the required material
information input screen 400 may be input windows for inputting auxiliary
information, which is used for inputting information about the required
materials, such as respective difference values between the shape and
5 coordinate values of the tool 32 planned to be used, and the shape and
coordinate values of the tool 32 actually attached. Further, those displayed on
the required material information input screen 400, as the auxiliary
information for inputting information about the required materials, may be
respective difference values between the shape and coordinate values of the
10 measuring apparatus 4 planned to be used, and the shape and coordinate
values of the measuring apparatus 4 actually installed. Then, those displayed J
on the required material information input screen 400 may be input windows 1
for inputting auxiliary information, which is used for inputting information j
about the required materials, such as reference origin at the time of 1
15 measuring the size of the workpiece 31, a difference value between the origin 1
of the workpiece 31 and the origin of the machine tool 3, and coordinate 1
values of the machine tool 3, which corresponds to the reference origin at the J
time of measuring the size of the workpiece 31.
[0071]
20 FIG. 12 is a diagram showing an example of a machining information
input screen according to the present embodiment.
Here, the machining information input screen 500 in FIG. 12 is a screen
displayed when specifying machining information at step S107 in FIG. 6.
The machining information input screen 500 is composed of a tree 1
25 structure display screen 510, and an information input screen 520. I
The tree structure display screen 510 displays a hierarchical structure of I
the components of the required materials in a tree format having each J
component as a node. Note that this hierarchical structure is information
stored in the CAD/CAM system database 5.
30 [0072] In the nodes (corresponding to the required materials) displayed on the
tree structure display screen 510, there are components that operate in
25
conjunction with coordinate values of the machine tool 3 during machining,
and components that do not operate in conjunction therewith. In each of the
nodes of element operating in association with coordinate values of the
machine tool 3 during machining, there exist an axis name XYZ of the
5 Cartesian coordinate system in the three-dimensional space, an auxiliary axis
name UVW, a rotation axis name ABC, and the like. In addition, when an
operating system is increased, each node name (element name) is associated
with a number as an index.
For example, an X-axis of the first system of the first tool 32 is made as
10 the Xi axis, and the system is displayed as being operable independently.
Further, the joint portion of a node may be layered as a lower node in the
original joint. For example, when the Y axis operates with the operation of
the X-axis, nodes having the Y-axis operation can be expressed hierarchically
as children of nodes having the X-axis operation.
15 [0073] The information input screen 520 includes a three-dimensional CAD
data display screen 540. The three-dimensional CAD data display screen 540
is a mounting status of the required material displayed at step S108 in FIG. 6.
Those displayed on the three-dimensional CAD data display screen 540 are
three-dimensional CAD data such as the machine tools 3, the tool 32, and the I
20 workpiece 31. In addition, those displayed as the three-dimensional CAD j
data of the workpiece 31 may be a three-dimensional CAD data of a material I
state, a three-dimensional CAD data before starting machining (current), and
a three-dimensional CAD data after the completion of machining (to be
completed).
25 [0074] Further, on the information input screen 520, information about a node
(unit: corresponding to a required material) selected in the tree structure
display screen 510 ("AAA" in the example in FIG. 12) is displayed for setting.
Note that, according to the present embodiment, the information about the
node selected in the tree structure display screen 510 is displayed on the
30 information input screen 520, but a node name may be selected from a node
selection pull-down menu (not shown) on the information input screen 520, or
26
the like. In this case, the information about the node selected at the node
selection pull-down menu is to be displayed on the information input screen
520.
[0075] As shown in FIG. 12, as well as a selected unit name, a virtual (on the
5 three-dimensional CAD data display screen) arrangement coordinate value of
the selected unit is displayed on the information input screen 520. Besides
this, those displayed on the information input screen 520 are a coordinate
value of the center of the rotational axis of the tool 32 (coordinate value of the
rotational axis center), an angle value of the center of the rotational axis
10 indicating the arrangement direction of each of the tools 32 (the rotational
axis angle), and the like. The above information can be fine-tuned through
the input window.
[0076] In addition, it is possible in the information input screen 520 to input
the minimum distance that indicates how close the tool 32 is to the workpiece
15 31 (reference numeral 531). This information is the one that is used at step
S107inFIG. 8.
Further, it is possible in the information input screen 520 to input
information about display colors. Display colors can be specified for a portion
where the tool 32 undergoes interference as shown in FIG. 12 (reference
20 numeral 532), and a portion where the workpiece 31 undergoes machining
(reference numeral 533). Besides this, display colors can be also specified for
a material shape, current shape, and projected shape of the workpiece 31, the
tool 32 when the distance between the tool 32 and the workpiece 31 becomes
less than or equal to the minimum distance, or the like.
25 Note that, in the three-dimensional CAD data display screen 540, units
corresponding to a selected unit in the tree structure display screen 510, a
displayed unit in the information input screen 520, or the like may be
highlighted by flashing or the like.
[0077]
30 FIG. 13 is a diagram showing an example of the machining status display
screen according to the present embodiment.
27
i
A machining status display screen 600 is information that is displayed on
the display device 150 when the actual machining is performed, during step
S110 in FIG. 6 through step S123 in FIG. 8.
Those displayed on the machining status display screen 600 are
5 machining step information (reference numeral 610), attachment information
(ATT information: reference numeral 620), tool information (reference
numeral 630), work reference position information (reference numeral 640),
and so on.
In addition, the machining status display screen 600 has an operation
10 screen 650. Based on the operating state of the machine tool 3 obtained from
the machine tool controller 2, an operation in conjunction with the actual
machine tool 3 is performed in the operation screen 650 using threedimensional
CAD data. That is, the movement of the machine tool 3 in
conjunction with the actual machine tool 3 is displayed in the operation
15 screen 650.
And when a simulation process is performed by the simulation processing
unit 113 (SI 18 in FIG. 8), a simulated operation of the machine tool 3 is
performed by the simulation processing unit 113 in the operation screen 650.
At this time, the actual machine tool 3 is stopped as described above.
20 [0078] In the operation screen 650, a portion where interference occurs is
displayed in a color that was input in the input window 532 for the display
color of the interference in FIG. 12 (not shown).
[0079] It should be noted that information about operation precautions included
in step information or the like is displayed in an operation precaution display
25 screen 660.
Then, alarm information such as "Interference has occurred" is displayed
in the alarm display screen 670 when such interference occurs. Note that
those displayed in the alarm display screen 670 may be errors of the NC
program, non-conformity of inputted information in FIG. 12, or the like.
30 [0080]
28
FIGS. 14-17 are diagrams showing examples of tool registration screens
according to the present embodiment.
The tool registration screen 700 is a screen that is displayed before the
processing in FIGS. 6-8 is performed.
5 As shown in FIG. 14, the tool registration screen 700 includes a size
setting area 710, a set size display area 720, a three-dimensional tool CAD
data display area 730, and a tool selection pull-down menu 740. The size
setting area 710, the set size display area 720, and the three-dimensional tool
CAD data display area 730 will be described later with reference to FIG. 15.
10 As shown in FIG. 14, it is possible to select the tool 32 to be displayed and
registered in the tool selection pull-down menu 740. As shown in FIG. 14, the
tool registration screen 700 will be described with reference to FIG. 15 when
the "shoulder (mill)" is selected as the tool 32.
[0081] In the size setting area 710, it is possible to set respective parameters
15 individually for the tool 32.
A cross-sectional view of the tool 32 on one side from the central axis
thereof is displayed in the set size display area 720. Here, a contour 722 is a
contour line based on the dimensions of the tool 32 that is stored in the
CAD/CAM system database 5, and a contour 721 is a contour line based on
20 the dimensions specified in the size setting area 710.
An area between the contour line 721 and the contour line 722 becomes
an aforesaid dead band.
Three-dimensional CAD data of the tool 32, which is changed to the
dimensions specified in the size setting area 710, is displayed on the three-
25 dimensional tool CAD data display area 730.
Note that the manual position correction in the size setting area 710 is
intended to be used when correcting the initial position of the tool 32.
[0082] When the registration button is selectively inputted, the tool 32 is
registered in the CAD/CAM system database 5 with dimensions specified in
30 the size setting area 710 (i.e., a state in which the dead band is set).
29
[0083] FIG. 16 is the tool registration screen 700 in a case where a ball (end
mill) is selected as the tool 32. As the tool registration screen 700 associated
with FIG. 16 is similar to that of FIG. 15, the description thereof will be
omitted.
5 In addition, FIG. 17 is the tool registration screen 700 in a case where a
milling boring (mill) is selected as the tool 32.
The tool registration screen 700 associated with FIG. 17 is similar to that
of FIG. 15, but only the machining portion is displayed on the specified size
display area 720.
10 Process Summary
[0084] According to the present embodiment, if a simulation start code is
detected in the execution portion of the NC program, a simulated portion of
the NC program (from a simulation start code up to a simulation end code) is
simulated by stopping the machine tool 3. By doing so, as there is no need to
15 simulate all machining steps, it is possible to improve the certainty of the
machining, while suppressing degradation in machining efficiency.
[0085] It is also possible to program a simulation start code in the NC program
so that a simulation processing is started at the timing when replacing the
tool 32. By doing so, even for a case, as described above, where the correction
20 of the installation is performed by the user when replacing the tool 32, it is
possible for the user to verify, by simulating operation of the machine tool 3,
whether or not there is any error in the NC program or the inputted set
values in the use of the replaced tool 32. Besides, it is possible for the user to
verify an operation at any time when the set value is changed, or the like.
25 [0086] By using unused M codes (e.g., M100) or the like as the simulation start
code and the simulation end code, it is possible to implement the present
embodiment without changing the in-use NC code significantly. That is, it is
possible to implement the present embodiment without changing the current
system significantly.
30 [0087] In addition, according to the present embodiment, by performing the
specified tool distance processing when the tool distance becomes less than or
30
equal to the specified tool distance, it is possible to verify the tool 32 before I
staring actual machining. I
[0088] Further, if the distance from the attached position of the tool 32 to the
workpiece 31 is long, there is a case where the user may not be able to
5 measure a distance between the tool 32 and the workpiece 31. In such a case,
by setting a "stop" as the specified tool distance processing, the user
measures the distance between the workpiece 31 and the tool 32 using a scale
or the like. By doing so, it is possible to verify whether or not the distance
between the tool 32 and the workpiece 31 is significantly different from the
10 projected distance to be stopped, thus preventing an operation error.
[0089] Furthermore, when the machine tool 3 is large, a braking distance of the
tool 32 becomes long when the machine tool 3 is stopped. Therefore, by
setting the minimum distance in the present embodiment as a distance in
consideration of the braking distance of the machine tool 3, it is possible to
15 stop the machine tool 3 in consideration of the braking distance even for a
case when the machine tool 3 is large.
[0090] Moreover, when attaching the tool 32, the tool 32 is attached at a
position shifted from the stop position then, after the machine tool controller
2 returns the tool 32 to the stop position, machining is resumed, but at this
20 time, if there is an error in attaching the tool 32 or in the type of the tool 32,
interference may occur.
Here, by setting the minimum distance larger, it is possible to prevent
interference in a case where there is an error in attaching the tool 32 or in
the type of the tool 32.
25 [0091] In addition, there is a case where an error is included in the set value,
and very small interference may occur due to the error. As in the present
embodiment, by performing the specified tool distance processing when the
tool distance becomes less than or equal to the minimum distance, it is
possible to prevent interference caused by such errors.
30 [0092] Further, by prohibiting the processing from proceeding to the next step
without following the procedure displayed in the machining preparation
31
I
information input screen 300 as in the present embodiment, it is possible to
improve the certainty of the procedure, and also to educate the user.
Furthermore, by allowing a dead band to be specified by parameter, it is
possible to set a flexible dead band.
5 [0093] It should be noted that the present invention is not limited to the above
embodiments, and various modifications may be included.
For example, if the simulation start code is programmed at the beginning
of the NC program and the simulation end code is programmed at the end of
the NC program, it is possible to start actual machining after simulating the
10 entire NC program.
Alternatively, an M code that simulates the entire NC program before I
machining (e.g., M102) may be set in the simulated portion. 1
Further, there is a distinction in the present embodiment between the
minimum distance and the specified tool distance, but both may be the same.
15 [0094] It should be noted that the embodiments hereinabove are described in §
detail in order to better illustrate the invention, and not intended to 1
necessarily limit to have all configurations that have been described. Also
some of the configurations of the present embodiment may be added with
another one, removed, or replaced with another one.
20 [0095] Further, some or all of the components, functions, the processing unit
110, the units 111-113, the storage device 160 and so forth in the machining 1
support apparatus 1 may be embodied in hardware, for example, by designing I
an integrated circuit. Alternatively, as shown in FIG. 2, aforesaid components I
and functions in the machining support apparatus 1 may be embodied in 1
25 software by a processor such as a CPU interpreting and executing a program 1
to realize respective functions. Information for realizing respective functions, 1
such as programs, tables and files, can be stored, other than on a hard disk,
in a recording device such as a memory and an SSD (Solid State Drive), or in
a recording medium such as an IC (Integrated Circuit) card, an SD (Secure
30 Digital) card, and a DVD (Digital Versatile Disc).
32
!
In addition, control lines and information lines shown in each
embodiment are what are considered to be necessary for description, and all
control lines and information lines of the product are not necessarily shown. §
In fact, almost all components may be connected with one another.
5 Legend for Reference Numerals
[0096] 1 Machining support apparatus
2 Machine tool controller
3 Machine tool
4 Measurement apparatus
10 5 CAD/CAM system database
6 Network
10 Machining support system
100 Memory (Machining support apparatus)
110 Processing unit
15 111 Machining navigation unit
112 Machining monitoring unit
113 Simulation processing unit
120 CPU (Machining support apparatus)
130 Communication device (Machining support apparatus:
20 Communication unit)
140 Input device (Machining support apparatus: Input unit)
150 Display device (Display unit)
160 Storage device
200 Memory (Machine tool controller)
25 211 Machine tool control unit
220 CPU (Machine tool controller)
230 Communication device (Machine tool controller)
240 Input device (Machine tool controller)
250 Output device
30
33
•
i

!
WE CLAIM:
1. A machining support apparatus comprisinga
machining monitoring unit which, upon receiving a notification via a
5 communication unit from a machine tool controller controlling a
machine tool, indicating a detection of a simulation start code
programmed in a machining program, renders the machine tool
controller to stop the machine tool;
a simulation processing unit which simulates instructions in the
10 machining program from the simulation start code to a simulation
end code while the machine tool is stopped; and
a display unit which displays a simulation performed in the simulation
processing unit.
2. The machining support apparatus according to claim 1,
15 wherein
the simulation start code and the simulation end code are unused codes
! among codes used in a machining program.
3. The machining support apparatus according to claim 1,
wherein
20 a predetermined set distance is set in the machining support apparatus,
and
the machining monitoring unit monitors a distance between a workpiece
and a tool, and performs a predetermined processing when the distance
between the workpiece and the tool becomes less than or equal to the
25 predetermined set distance.
4. The machining support apparatus according to claim 3,
wherein 1
the predetermined processing is configured to stop an operation of the
machine tool.
30 5. The machining support apparatus according to claim 1,
wherein
34
a size of a tool is specified smaller than an actual size thereof, in the
machining support apparatus, and
the said specification can be made for each parameter of the tool.
6. The machining support apparatus, according to claim 1, further comprising'-
5 a machining navigation unit which, at a predetermined machining stage
during machining, displays information about procedures necessary
to perform the machining stage, and the next machining stage is not
allowed to proceed thereto, unless information indicating that all
procedures have been completed is inputted via an input unit.
10 7. A machining support system comprising:
a machining support apparatus which, upon receiving a notification via
a communication unit from a machine tool controller controlling a
machine tool, indicating a detection of a simulation start code
programmed in a machining program, transmits an instruction to
15 stop the machine tool to the machining tool controller, simulates
instructions from the simulation start code to a simulation end code
in the machining program, and displays the said simulation; and
the machining tool controller which controls the machine tool, upon
detecting the simulation start code, transmits a notification
20 indicating a detection of the simulation start code to the machining
support apparatus, and upon receiving an instruction to stop the
machine tool from the machining support apparatus, stops the
machine tool.
8. A machining support apparatus, substantially as herein described with
25 reference to accompanying drawings and examples.
9. A machining support system, substantially as herein described with
reference to accompanying drawings and examples.