Description:FIELD
The present disclosure relates to boring bars.
BACKGROUND
The background information herein below relates to the present disclosure but is not necessarily prior art.
A boring bar is used for combination of finishing and semi-finishing boring 5 operations to be performed on a special purpose machine. For an application such as gear box housings, conventionally boring bars of different dimensions were employed for boring different models of gear box housings based on the length and diameter required.
This task was typically performed manually by a pair of operators who are assigned 10 to change the boring bar to alter the setting of the boring machine according to the model of the gear box housing as per the production schedule requirement. However, the incessant replacement of the boring bar requires the operators to dismount the boring bar from the spindle of the boring machine with the help of an Allen key. The conventional boring bar weighs around 6 kilograms and takes about 10-12 minutes 15 for being dismounted. Thereafter, mounting another boring bar of a different specification takes another 12-15 minutes.
Setting and resetting the boring machine in this manner, is not only risky, but also takes a toll on the operators even though there are at least two operators always required on the job. Further, it takes multiple numbers of fastening bolts to secure the 20 alignment of boring bar to the spindle of the boring machine. Loosening the fasteners sometimes is difficult, and hence hampers the daily production targets thus affecting the productivity directly.
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There is therefore felt a need for a boring bar that alleviates the aforementioned drawbacks of the conventional boring bars.
OBJECTS
Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows: 5
An object of the present disclosure is to provide a boring bar.
Another object of the present disclosure is to provide a boring bar that can be replaced in a safe and effective manner by only a single operator.
Yet another object of the present disclosure is to provide a boring bar that does not hamper the daily production targets of gearbox housings. 10
Still another object of the present disclosure is to provide a boring bar that requires relatively lesser number of operators for mounting or dismounting the boring bar, without causing fatigue to the operator.
Another object of the present disclosure is to provide a boring bar that that reduces changeover time required for boring holes of different dimensions 15
Other objects and advantages of the present disclosure will be more apparent from the following description, which is not intended to limit the scope of the present disclosure.
SUMMARY
The present disclosure envisages a boring bar. The boring bar comprises a first 20 component configured to be secured to a spindle of a boring machine. The boring bar further comprises a second component configured to be removably mounted on the first component.
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In an embodiment, the first component includes a first body configured to facilitate attachment of the first component to the spindle.
In another embodiment, the second component is defined by a second body configured to be mounted on the first body.
In an embodiment, the first component includes a guiding locator provided on an 5 operative central region thereof. The guide locator is configured to facilitate mounting of the second component on the first component.
In another embodiment, the guide locator is a blind hole.
In an embodiment, the first component includes at least two guide locators provided on the radial surface thereof. 10
In another embodiment, the second component includes a through-hole configured in an operative central region of the second component, complementary to the blind hole. .
In yet another embodiment, the boring bar includes a fastener configured to be received in the through-hole to be accommodated in the blind hole, to facilitate 15 attachment of the second component with the first component.
In another embodiment, the second component includes a first boring cartridge provided on the peripheral surface of the second body. The first boring cartridge has a semi-finished configuration for facilitating boring operation.
In one embodiment, the second component includes a second boring cartridge 20 provided on the peripheral surface of the second body. The second boring cartridge has a finished configuration for facilitating boring operation.
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In another embodiment, the second component includes a third boring cartridge provided on the peripheral surface of the second body. The third boring cartridge facilitates chamfering operation of the component.
In yet another embodiment, the first component includes a fourth boring cartridge provided on the peripheral surface of the first body. The boring cartridge has a 5 finished configuration to facilitate an auxiliary operation.
In still another embodiment, the first component includes at least four through-holes provided on peripheral boundary of the first component to facilitate receipt of the fasteners therein to enable mounting of the first component to the spindle.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING 10
A boring bar of the present disclosure will now be described with the help of the accompanying drawing, in which:
Figure 1 illustrate a cross-sectional view of a conventional boring bar;
Figure 2 illustrates a cross-sectional view of a boring bar of the present disclosure;
Figure 2.1 illustrates a cross-sectional view of a first component of the boring bar of 15 Figure 1;
Figure 2.2 illustrates a cross-sectional view of a second component of the boring bar of Figure 1; and
Figure 2.3 illustrates a cross-sectional view of the fastener of the boring bar of Figure 1. 20
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LIST OF REFERENCE NUMERALS
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10 Conventional boring bar
2 Shank
4 Body
6 Hole for housing fasteners
8 Guide locator 5
100 Boring bar of the present disclosure
105 First component
106 Shank
110 Second component
115 Hole for housing fasteners 10
120 Fastener for second body
121 Blind hole in first body
123 Guide locator for second component
125 Guide locator for machine spindle
130 First boring cartridge 15
135 Second boring cartridge
DETAILED DESCRIPTION
Embodiments, of the present disclosure, will now be described with reference to the accompanying drawing.
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Embodiments are provided so as to thoroughly and fully convey the scope of the present disclosure to the person skilled in the art. Numerous details are set forth, relating to specific components, and methods, to provide a complete understanding of embodiments of the present disclosure. It will be apparent to the person skilled in the art that the details provided in the embodiments should not be construed to limit the 5 scope of the present disclosure. In some embodiments, well-known processes, well-known apparatus structures, and well-known techniques are not described in detail.
The terminology used, in the present disclosure, is only for the purpose of explaining a particular embodiment and such terminology shall not be considered to limit the scope of the present disclosure. As used in the present disclosure, the forms “a”, “an” 10 and “the” may be intended to include the plural forms as well, unless the context clearly suggests otherwise. The terms “comprises”, “comprising”, “including” and “having” are open-ended transitional phrases and therefore specify the presence of stated features, elements, modules, units and/or components, but do not forbid the presence or addition of one or more other features, elements, components, and/or 15 groups thereof.
When an element is referred to as being “mounted on”, “connected to” or “coupled to” another element, it may be directly on, connected or coupled to the other element.
The terms first, second, third, etc., should not be construed to limit the scope of the present disclosure as the aforementioned terms may be only used to distinguish one 20 element, component, region, layer or section from another component, region, layer or section. Terms such as first, second, third etc., when used herein do not imply a specific sequence or order unless clearly suggested by the present disclosure.
Terms such as “inner”, “outer”, “beneath”, “below”, “lower”, “above”, “upper” and the like, may be used in the present disclosure to describe relationships between 25 different elements as depicted from the figures.
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A conventional boring bar (10), as illustrated by Figure 1, typically comprises a shank (2) and a body (4). The shank (2) is mounted on a spindle of a boring machine with the help of a plurality of fasteners. The conventional boring bar (10) weighs around 6kgs and takes about 25 to 30 minutes for being replaced by another boring bar (10) of the same kind. The weight of the boring bar (10) and the times it needs to 5 be replaced, requires at least two operators to handle it, and yet is tiresome and risky (due to its heavy weight) for the operators while replacing the boring bar (10) with another one. Further, more than four numbers of fasteners are usually required to attach the boring bar (10) to the spindle. Detaching and reattaching four fasteners also consume a lot of time, thereby affecting the productivity time and targets. 10
Therefore there is felt a need for a boring bar that alleviates the afore-mentioned drawbacks.
A boring bar (100), of the present disclosure will now be described in detail with respect to Figure 2 through Figure 2.3.
The boring bar (100) comprises a first component (105) and a second component 15 (110). The first component (105) is configured to be secured to a spindle of a boring machine. In an embodiment, the first component (105) is permanently secured to the spindle of a boring machine. The second component (110) is configured to be removably mounted on the first component (105).
The first component (105) includes a first body configured to facilitate attachment of 20 the first component (105) to the spindle. The second component (110) is defined by a second body configured to be mounted on the first body.
Configuring the boring bar (100) as a two-part assembly is advantageous as the operator does not have to lug around 6kgs of weight (of a conventional boring bar (10)), but instead only has to handle around 2kgs of weight of the second component 25 (110) of the boring bar (100). Therefore, instead of at least two operators, a single
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operator can handle the boring bar (100) without any fatigue or any risk involved while changing the settings of the boring bar (100).
In an embodiment, the first component (105) includes a guiding locator provided in an operative central region thereof. In another embodiment, the first component (105) includes at least two guide locators provided on either radial surface thereof. In yet 5 another embodiment, the guide locator, provided on the operative right hand side radial surface has a diameter of 40mm, and is located in the precisely controlled guide hole of the spindle. The guide locator is configured to facilitate precise attachment of the second component (110) with first component (105). In another embodiment, the diameter of the guide locator ranges between 24mm and 30mm. 10
In another embodiment, the first component (105) includes at least four holes configured along the periphery thereof. The holes are configured to receive fasteners therein, to facilitate attachment of the first component (105) with the spindle.
In an embodiment, the receiving end of the first component (105) is configured to receive a second component (110) of any dimension. In one embodiment, the length 15 of the first component (105) ranges between 80mm to 90mm.
In an embodiment, the guide locator is a blind hole configured on an operative central region of the first component (105). In another embodiment, the second component (110) includes a through-hole configured in an operative central region of the second component (110), complementary to the blind hole. 20
The boring bar (100) includes a fastener (120) configured to be received in the through-hole to be accommodated in the blind hole. The fastener (120) is configured to facilitate mounting of the second component (110) on the first component (105). As compared to the conventional boring bar (10), the boring bar (100), of the present disclosure, requires a single fastener (120) to secure the second component (110) to 25 the first component (105).
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In an embodiment, the fastener (120) is a threaded screw. In another embodiment, the fastener (120) is of high carbon alloy steel.
In an embodiment, the weight of the first component (105) ranges between 3kg to 4kg.
In another embodiment, the weight of the second component (110) ranges between 5 1.5kg to 2.5kg.
The permanent fixture of the first component (105) to the spindle, the relatively lesser weight of the second component (110), and attachment of the first and the second components (105, 110) using the single fastener (120) helps in significantly reducing the time required for removing and mounting the second component (110) (which is 10 the boring element).
In an embodiment, the boring bar (100) is used to bore holes in gearbox housings of heavy vehicles.
In an exemplary embodiment, it has been seen it takes a time period of 1 minute for an operator for removing a second component (110) and mounting another second 15 component (110) on the first component (105), as compared to the time period of 25-30 minutes taken for the conventional boring bars (10). Additionally, loosening a single screw took relatively lesser time and efforts (as opposed to the plurality of screws of the conventional boring bar (10)). Further it was also observed that the screws of the conventional boring bar (10) often got lost due to their larger quantity, 20 whereas due to the requirement of only a single screw in the boring bar (100) of the present disclosure, it was seldom lost while simultaneously being convenient for usage. As a result, there was no direct effect on the daily production targets caused by any loss of screws.
The above described configuration of the boring bar (100) allows the dismounting of 25 one second component (110) from the first component (105) to mount another second
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component (110) on the first component (105) to serve the requirements of the job that is to be performed.
In another embodiment, the second component (110) includes a first boring cartridge provided on the peripheral surface of the second body. The first boring cartridge has a semi-finished configuration for facilitating boring operation. 5
In an embodiment, the second component (110) includes a second boring cartridge provided on the peripheral surface of the second body. The second boring cartridge has a finished configuration boring operation.
In another embodiment, the second component (110) includes a third boring cartridge provided on the peripheral surface of the second body. The third boring cartridge 10 facilitates chamfering operation on a semi-finished bored hole.
In yet another embodiment, the first component (105) includes a fourth boring cartridge provided on the peripheral surface of the first body. The boring cartridge has a finished configuration to facilitate an auxiliary operation.
The foregoing description of the embodiments has been provided for purposes of 15 illustration and not intended to limit the scope of the present disclosure. Individual components of a particular embodiment are generally not limited to that particular embodiment, but, are interchangeable. Such variations are not to be regarded as a departure from the present disclosure, and all such modifications are considered to be within the scope of the present disclosure. 20
TECHNICAL ADVANCEMENTS
The present disclosure described herein above has several technical advantages including, but not limited to, the realization of a boring bar:
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? that can be used for boring holes of variety of gearbox housings having different bore dimensions;
? which weighs approximately 60% relatively lesser than the weight of the conventional boring bar, and hence can be easily mounted or dismounted from the boring machine; 5
? which can be reset multiple times, without tiring an operator or being risky for the operator, for boring holes in gearbox housings;
? which does not require a large number of fastening components, and therefore the chances of the fastening components being lost reduces and neither does it hamper the daily production targets; and 10
? requires relatively lesser number of operators for mounting or dismounting the boring bar.
The foregoing disclosure has been described with reference to the accompanying embodiments which do not limit the scope and ambit of the disclosure. The description provided is purely by way of example and illustration. 15
The embodiments herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the 20 embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
The foregoing description of the specific embodiments so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, 25
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readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not 5 of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
The use of the expression “at least” or “at least one” suggests the use of one or more 10 elements or ingredients or quantities, as the use may be in the embodiment of the disclosure to achieve one or more of the desired objects or results.
Any discussion of documents, acts, materials, devices, articles or the like that has been included in this specification is solely for the purpose of providing a context for the disclosure. It is not to be taken as an admission that any or all of these matters 15 form a part of the prior art base or were common general knowledge in the field relevant to the disclosure as it existed anywhere before the priority date of this application.
While considerable emphasis has been placed herein on the components and component parts of the preferred embodiments, it will be appreciated that many 20 embodiments can be made and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other changes in the preferred embodiment as well as other embodiments of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted 25 merely as illustrative of the disclosure and not as a limitation. , Claims:WE CLAIM:
1. A boring bar (100) comprising:
? a first component (105) configured to be secured on a spindle of a boring machine; and
? a second component (110) configured to be removably mounted on 5 said first component (105).
2. The boring bar (100) as claimed in claim 1, wherein said first component (105) is defined by a first body configured to be attached to the spindle.
3. The boring bar (100) as claimed in claim 1, wherein said second component (110) is defined by a second body configured to be mounted on said first body 10 (107).
4. The boring bar (100) as claimed in claim 1, wherein said first component (105) includes a guide locater provided on an operative central region thereof.
5. The boring bar (100) as claimed in claim 1, wherein said first component (105) includes at least two guide locaters provided on operative radial 15 surfaces thereof.
6. The boring bar (100) as claimed in claim 4, wherein said guide locator is a blind hole (121).
7. The boring bar (100) as claimed in claim 6, wherein said second component (110) includes a through-hole configured in an operative central region of said 20 second component (110), complementary to said blind hole (121).
8. The boring bar (100) as claimed in claim 7, which includes a fastener (120) configured to be received in said through-hole and further configured to be
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housed in said blind hole (121), to facilitate attachment of said second component (110) with said first component (105).
9. The boring bar (100) as claimed in claim 1, wherein a guide locator (125) is provided on an operative free radial surface of said first component (105), said guide locator (125) configured to facilitate attachment of said first 5 component (105) on said spindle.
10. The boring bar (100) as claimed in claim 1, wherein said second component (110) includes a first boring cartridge provided on the peripheral surface of the second body, said first boring cartridge having a semi-finished configuration for facilitating boring operation. 10
11. The boring bar (100) as claimed in claim 1, wherein said second component (110) includes a second boring cartridge (130) provided on the peripheral surface of said second body, said second boring cartridge having a finished configuration for facilitating boring operation.
12. The boring bar (100) as claimed in claim 1, wherein said second component 15 (110) includes a third boring cartridge provided on the peripheral surface of the second body, said third boring cartridge configured to facilitate chamfering operation on a semi-finished bored hole.
13. The boring bar (100) as claimed in claim 1, wherein said first component (105) includes a fourth boring cartridge provided on the peripheral surface of 20 the first body, said fourth boring cartridge having a finished configuration to facilitate an auxiliary operation.
14. The boring bar (100) as claimed in claim 1, wherein said first component (105) includes at least four through-holes provided on peripheral boundary of
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the first component to facilitate receipt of the fasteners therein to enable mounting of said first component (105) to the spindle.
Dated this 19th day of October, 2022
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_______________________________
MOHAN RAJKUMAR DEWAN, IN/PA – 25
of R.K.DEWAN & CO.
Authorized Agent of Applicant
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TO,
THE CONTROLLER OF PATENTS
THE PATENT OFFICE, AT DELHI