CN211867197U - Internal combustion engine thin-wall bushing clamping device - Google Patents
Internal combustion engine thin-wall bushing clamping device Download PDFInfo
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- CN211867197U CN211867197U CN202020406148.6U CN202020406148U CN211867197U CN 211867197 U CN211867197 U CN 211867197U CN 202020406148 U CN202020406148 U CN 202020406148U CN 211867197 U CN211867197 U CN 211867197U
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Abstract
The utility model relates to a thin wall bush clamping device of internal-combustion engine warp the problem of damage easily when solving current thin wall bush clamping of internal-combustion engine. The alloy positioning chuck comprises more than two positioning chucks and a chuck driving mechanism, wherein the alloy positioning chucks are uniformly arranged in a circumferential manner, the positioning chucks are formed by uniformly dividing a circular ring structure, each positioning chuck comprises a supporting part arranged on an outer ring of the circular ring structure and a clamping part arranged on an inner ring of the circular ring structure and used for clamping, the alloy hardness of each clamping part is smaller than that of each supporting part, the alloy hardness of each clamping part is HB 24-33, and a clearance angle is arranged between every two adjacent positioning chucks during clamping. When the thin-wall bushing is clamped, the round surface is adopted for wrapping, so that the thin-wall bushing cannot be deformed inwards during clamping; in addition, the hardness of the clamping part of the positioning chuck is smaller than that of the thin-wall bushing, so that the clamping deformation of the thin-wall bushing can be basically eliminated, the form and position tolerance among structural elements is ensured, the stress deformation in the cutting process is reduced, and the production efficiency is improved.
Description
Technical Field
The utility model relates to a tooling device especially relates to an internal-combustion engine thin wall bush clamping device.
Background
With the development of the internal combustion engine technology, various bushing parts for the internal combustion engine rely on the bimetal material technology (a high-strength steel backing substrate and a wear-resistant alloy layer), the strength of the original integral copper alloy bushing is not required to be guaranteed by a thick structural mode, and the lightweight design is gradually realized by adopting the bimetal composite technology, namely, the wall thickness of the bushing is reduced, so that the bushing has larger indexes of space lifting shafting. With the gradual reduction of the wall thickness and the continuous improvement of the dimensional accuracy of the bushing, the processing difficulty of the bushing is increased gradually, and the bushing becomes a typical thin-wall bushing part. The hardness of the thin-wall bushing is generally HB 60-240, and the wall thickness of the workpiece ranges from 1 mm to 5 mm. The thin-wall bushing has the characteristics of difficult clamping, difficult processing and alignment and the like, so that the problems in the processing process are particularly obvious.
The thin-wall bushing processed by adopting the traditional clamping mode is difficult to improve the deformation of the bushing, and the processing precision and form and position tolerance can not be ensured. For example, the thin-wall bushing has requirements on the roundness of an inner hole and an outer circle in a free state, but the clamping is realized by adopting a clamping surface hard-to-hard mode in the traditional process, and basically, three-jaw or four-jaw clamping is adopted.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem of easy deformation and damage when the current thin-wall bush clamping of the internal-combustion engine is carried out.
For solving the utility model provides a technical scheme that technical problem adopted does: the utility model discloses an internal-combustion engine thin wall bush clamping device is including the location chuck more than two to and the chuck actuating mechanism of drive location chuck centre gripping, and the alloy location chuck more than two is circumference align to grid, the location chuck is formed by ring structure evenly cut apart, and the location chuck is including the supporting part of locating the ring structure outer loop and locating the inner annular clamping part that is used for the centre gripping of ring structure, and the alloy hardness of clamping part is less than the alloy hardness of supporting part, the alloy hardness of clamping part be HB 24-33, during the centre gripping, be equipped with the clearance angle between the adjacent location chuck.
Right the utility model discloses do further limited technical scheme and include:
the positioning chuck is connected with the chuck driving mechanism through a connecting clamping jaw, and the connecting clamping jaw is detachably connected with the positioning chuck.
The positioning chuck on be equipped with the screw via hole, the connection jack catch on be equipped with the screw hole, the positioning chuck passes through the screw and can dismantle with the connection jack catch and be connected.
The clamping part is higher than the supporting part.
The number of the positioning chucks is three.
The material of the clamping part is HM 07.
The supporting part is made of ZCuPb10Sn 10.
And a clearance angle of 10 degrees is arranged between the adjacent positioning chucks.
Through the technical scheme, the beneficial effects of the utility model are that: when the clamping device for the thin-wall bush of the internal combustion engine clamps the thin-wall bush, the round surface is adopted for wrapping, so that the thin-wall bush can not be deformed inwards during clamping; in addition, the hardness of the clamping part of the positioning chuck is smaller than that of the thin-wall bushing, so that the clamping deformation of the thin-wall bushing can be basically eliminated, the form and position tolerance among structural elements is ensured, the stress deformation in the cutting process is reduced, and the production efficiency is improved.
Drawings
Fig. 1 is a schematic view of a three-dimensional structure of the internal combustion engine thin-wall bushing clamping device of the present invention.
Fig. 2 is an explosion structure schematic diagram of the internal combustion engine thin-wall bushing clamping device of the present invention.
Detailed Description
The structure of the present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1 and 2, the internal combustion engine thin-wall bushing clamping device comprises more than two positioning chucks 1 and a chuck driving mechanism for driving the positioning chucks to clamp, wherein the more than two alloy positioning chucks are uniformly arranged in a circumference manner, the positioning chucks are formed by uniformly dividing a circular ring structure, each positioning chuck 1 comprises a supporting part 11 arranged on an outer ring of the circular ring structure and a clamping part 12 arranged on an inner ring of the circular ring structure and used for clamping, the alloy hardness of each clamping part is smaller than that of each supporting part, the alloy hardness of each clamping part is HB 24-33, and a clearance angle 2 is arranged between every two adjacent positioning chucks during clamping. When the thin-wall bushing clamping device for the internal combustion engine clamps the thin-wall bushing 5, the thin-wall bushing is wrapped by the round surface, so that the thin-wall bushing cannot be deformed inwards during clamping; in addition, the hardness of the thin-wall bushing is generally HB 60-240, the hardness of the clamping part of the positioning chuck is smaller than that of the thin-wall bushing, the clamping deformation of the thin-wall bushing can be basically eliminated so as to adapt to the deformation of the bushing, and the workpiece is wrapped and fixed like a layer of hard plastic, so that the roundness of an inner hole of the workpiece in a free state after being processed is smaller than 0.03 mm. The form and position tolerance between the structural elements is ensured, the stress deformation in the cutting process is reduced, and the production efficiency is improved.
In this embodiment, the positioning chuck is connected with the chuck driving mechanism through the connecting jaw 3, and the connecting jaw is detachably connected with the positioning chuck. Be equipped with screw through hole 13 on the positioning chuck 1, be equipped with screw hole 31 on the connection jack catch 3, the positioning chuck passes through screw 4 and can dismantle with the connection jack catch and be connected. Therefore, the positioning chuck can be conveniently detached and replaced, and the positioning chucks with different inner diameters can be conveniently replaced according to workpieces with different diameters.
In this embodiment, the clamping portion is higher than the supporting portion. Thereby being convenient for punch and install on the supporting part, and the high supporting part can more stable centre gripping work piece simultaneously.
In this embodiment, the location chuck is equipped with three, centre gripping work piece that can be stable, during the concrete implementation, can set up more than two location chucks as required. The material of the clamping part is HM07, and the material of the supporting part is ZCuPb10Sn 10. A clearance angle of 10 degrees is arranged between the adjacent positioning chucks. In the clamping process, because the difference between the inner diameter of the positioning chuck and the outer diameter of the thin-wall workpiece is small, and the clearance angle between the adjacent positioning chucks is small, the thin-wall bushing can be basically and completely wrapped, the deformation caused by clamping force is eliminated to the maximum extent, and the thin-wall bushing is stressed uniformly in the machining process.
The thin-wall bushing clamped and processed by the clamping device is high in precision, and clamping deformation caused by a traditional three-jaw clamping processing mode can be avoided. The wall thickness difference of the processed bushing is less than or equal to 0.02 mm. The tool is convenient to assemble and disassemble, can be customized and adjusted according to the size of the lining, and can be recycled.
While the present invention has been described in detail and with reference to the accompanying drawings, it is not to be understood as limited by the scope of the invention. Various modifications and changes may be made by those skilled in the art without inventive work within the scope of the present invention as described in the claims.
Claims (8)
1. The utility model provides an internal-combustion engine thin wall bush clamping device, including the location chuck more than two to and the chuck actuating mechanism of drive location chuck centre gripping, its characterized in that: more than two alloy location chucks are circumference align to grid, the location chuck is formed by the ring structure is evenly cut apart, the location chuck including locate the supporting part of ring structure outer loop with locate the inner ring of ring structure be used for the clamping part of centre gripping, the alloy hardness of clamping part is less than the alloy hardness of supporting part, the alloy hardness of clamping part be HB 24-33, during the centre gripping, be equipped with the clearance angle between the adjacent location chuck.
2. The internal combustion engine thin-wall bushing clamping device as set forth in claim 1, wherein: the positioning chuck is connected with the chuck driving mechanism through a connecting clamping jaw, and the connecting clamping jaw is detachably connected with the positioning chuck.
3. The internal combustion engine thin-wall bushing clamping device as set forth in claim 2, wherein: the positioning chuck on be equipped with the screw via hole, the connection jack catch on be equipped with the screw hole, the positioning chuck passes through the screw and can dismantle with the connection jack catch and be connected.
4. The internal combustion engine thin-wall bushing clamping device as set forth in claim 1, wherein: the clamping part is higher than the supporting part.
5. The internal combustion engine thin-wall bushing clamping device as set forth in claim 1, wherein: the number of the positioning chucks is three.
6. The internal combustion engine thin-wall bushing clamping device as set forth in claim 1, wherein: the material of the clamping part is HM 07.
7. The internal combustion engine thin-wall bushing clamping device as set forth in claim 1, wherein: the supporting part is made of ZCuPb10Sn 10.
8. The internal combustion engine thin-wall bushing clamping device as set forth in claim 1, wherein: and a clearance angle of 10 degrees is arranged between the adjacent positioning chucks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020406148.6U CN211867197U (en) | 2020-03-26 | 2020-03-26 | Internal combustion engine thin-wall bushing clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020406148.6U CN211867197U (en) | 2020-03-26 | 2020-03-26 | Internal combustion engine thin-wall bushing clamping device |
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| Publication Number | Publication Date |
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| CN211867197U true CN211867197U (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020406148.6U Active CN211867197U (en) | 2020-03-26 | 2020-03-26 | Internal combustion engine thin-wall bushing clamping device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112621288A (en) * | 2020-12-11 | 2021-04-09 | 信联智翊科技(苏州)有限公司 | Efficient batch machining jig based on fan-shaped bushings and operation method thereof |
-
2020
- 2020-03-26 CN CN202020406148.6U patent/CN211867197U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112621288A (en) * | 2020-12-11 | 2021-04-09 | 信联智翊科技(苏州)有限公司 | Efficient batch machining jig based on fan-shaped bushings and operation method thereof |
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