CN221270801U - Grinding positioning device for high-precision shaft - Google Patents
Grinding positioning device for high-precision shaft Download PDFInfo
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- CN221270801U CN221270801U CN202323078494.9U CN202323078494U CN221270801U CN 221270801 U CN221270801 U CN 221270801U CN 202323078494 U CN202323078494 U CN 202323078494U CN 221270801 U CN221270801 U CN 221270801U
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- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 125000003003 spiro group Chemical group 0.000 description 1
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Abstract
The utility model provides a grinding and positioning device for a high-precision shaft, which comprises a clamp body, a bushing and a positioning key pin, wherein a connecting through hole penetrating through the clamp body is formed in the front side wall of the clamp body, a positioning hole communicated with the connecting through hole is formed in one side of the clamp body along the radial direction of the connecting through hole, the positioning key pin is inserted into the positioning hole, the front end of the positioning key pin can penetrate out of the positioning hole and enter the connecting through hole, a threaded pin connected with the positioning key pin is connected onto the clamp body in a threaded manner, and the bushing is embedded in the connecting through hole at the front end of the clamp body. The utility model has the beneficial effects that: the device not only realizes positioning grinding, but also ensures the positioning angle requirement of the shaft, and is suitable for being used when the shaft part with special phase angle requirement grinds the cam.
Description
Technical Field
The utility model belongs to the technical field of shaft grinding, and particularly relates to a high-precision shaft grinding positioning device.
Background
The camshaft of the valve mechanism of the diesel engine is a key part of a piston engine, and has the functions of controlling the opening and closing of a valve, ensuring the normal air intake and air exhaust of the diesel engine, completing the ventilation task in a combustion chamber, and the core part of the camshaft is a cam, and the quality of cam processing directly influences the overall performance of the diesel engine. Valve train camshafts are typical slender shaft parts, and sometimes, for lubrication and lightening of an engine, the camshafts are designed into hollow thin-wall slender shafts, so that great difficulty is brought to processing of the camshafts. For the grinding process, a positioning heart chuck is generally arranged on a grinding shaft part, and the heart chuck is rotated by a grinding machine deflector rod to stir the heart chuck to rotate on a grinding machine along with a workpiece, but the method is only suitable for grinding the outer circle and the end face of a common shaft part, and for grinding a special hollow thin-wall cam, the positioning face and the cam have phase requirements, and the common heart chuck cannot meet the phase requirements.
Disclosure of utility model
In view of the foregoing, the present utility model aims to overcome the above-mentioned drawbacks of the prior art, and provides a grinding and positioning device for a high-precision shaft.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
The utility model provides a grinding positioner for high accuracy axle, including anchor clamps body, bush, locating key round pin, set up the connecting hole that runs through the anchor clamps body on anchor clamps body front wall, and radially set up the locating hole that is linked together with connecting hole at anchor clamps body one side along connecting hole, the locating key round pin is pegged graft in the locating hole, locating key round pin front end can wear out the locating hole and get into in the connecting hole, and the spiro union has the threaded pin that links together with the locating key round pin on the anchor clamps body, it has the bush to be in the scarf joint to be located connecting hole at anchor clamps body front end
Further, two connecting portions are arranged at the top end of the clamp body at intervals, and each connecting portion is in threaded connection with a first fastening screw.
Further, the outside protrusion of lateral wall is equipped with the locating bench before the anchor clamps body, and the connecting through hole runs through the locating bench, has seted up first fluting and the second fluting that the opening all set up downwards in the locating bench lower part, and first fluting is perpendicular to connecting through hole and is linked together with connecting through hole, and the second fluting is located the connecting through hole downside and runs through the anchor clamps body along connecting through hole axial to be linked together with connecting through hole and first fluting, is connected with the second fastening screw of cross-over connection second fluting in locating bench lower part position first fluting front side department.
Further, a plurality of auxiliary grooves communicated with the connecting through holes are formed in the positioning table along the outer circumference of the connecting through holes.
Further, the bushing is of an open ring structure, a third fastening screw and a fourth fastening screw are screwed on the positioning table, and the third fastening screw and the fourth fastening screw are positioned at two sides of the opening of the bushing, and the inner ends of the third fastening screw and the fourth fastening screw are abutted against the bushing.
Further, each first fastening screw is provided with a reverse locking nut in a screwed manner at the outer side of the corresponding connecting part.
Further, a strip-shaped positioning key groove is formed in the side wall of the positioning key pin, an integrally formed positioning block is arranged at the front end of the positioning key pin, the upper surface and the lower surface of the positioning block are of planar structures, and the front end of the threaded pin is abutted against the positioning key groove.
Further, the rear end of the positioning key pin is an integrally formed and coaxially arranged limiting table, the section size of the limiting table is smaller than that of the positioning key pin, the section size of the positioning key pin is matched with the section size of the positioning hole, a limiting plate is fixedly connected to the outer side of the positioning hole on the clamp body, a limiting hole with the size matched with the section size of the limiting table is formed in the limiting plate corresponding to the positioning hole, and the limiting table penetrates out of the limiting hole and can horizontally move along the limiting hole.
Further, a limiting block with the end face size larger than the size of the limiting hole is connected to the outer end face of the limiting table through a fifth fastening screw.
Compared with the prior art, the utility model has the following advantages:
The high-precision shaft is fixed on the grinding head deflector rod of the grinding machine by the grinding positioning device, so that the high-precision shaft can rotate along with the grinding head deflector rod of the grinding machine; when the camshaft is used, the camshaft is inserted into the bushing, the front end of the positioning key pin is inserted into a corresponding key slot on the camshaft, and then the threaded pin is screwed down to enable the front end of the threaded pin to abut against the positioning key pin, so that the camshaft is fixed; the device not only realizes positioning grinding, but also ensures the positioning angle requirement of the shaft, and is suitable for being used when the shaft part with special phase angle requirement grinds the cam.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
FIG. 1 is a schematic structural view of a grinding and positioning device for a high-precision shaft according to an embodiment of the utility model;
FIG. 2 is a schematic view of a structure of a grinding and positioning device for a high-precision shaft in a rear side view angle according to an embodiment of the utility model;
FIG. 3 is an exploded view of a grinding and positioning device for a high-precision shaft according to an embodiment of the present utility model;
FIG. 4 is an exploded view of a high precision shaft grinding and positioning device according to an embodiment of the present utility model in a rear side view;
Fig. 5 is a cross-sectional view of a connecting structure of a positioning key pin and a clamp body according to an embodiment of the present utility model.
Reference numerals illustrate:
1. a clamp body; 101. a connection part; 102. a positioning table; 103. a connecting through hole; 104. an auxiliary groove; 105. a first slot; 106. a second slot; 107. positioning holes; 2. a bushing; 3. positioning a key pin; 301. a positioning block; 302. positioning a key groove; 303. a limiting table; 4. a threaded pin; 5. a first fastening screw; 6. locking the nut reversely; 7. a fourth fastening screw; 8. a third fastening screw; 9. a limiting block; 10. a fifth fastening screw; 11. a limiting plate; 1101. a limiting hole; 12. a sixth fastening screw; 13. and a second fastening screw.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
The utility model will be described in detail below with reference to the drawings in connection with embodiments.
As shown in the figure, the grinding and positioning device for the high-precision shaft comprises a clamp body 1, a bushing 2 and a positioning key pin 3, wherein a connecting through hole 103 penetrating through the clamp body 1 is formed in the front side wall of the clamp body 1, a positioning hole 107 communicated with the connecting through hole 103 is formed in one side of the clamp body 1 along the radial direction of the connecting through hole 103, the positioning key pin 3 is inserted into the positioning hole 107, the front end of the positioning key pin 3 can penetrate out of the positioning hole 107 and enter the connecting through hole 103, a threaded pin 4 connected with the positioning key pin 3 is connected to the clamp body 1 in a threaded manner, and the bushing 2 is embedded in the connecting through hole 103 at the front end of the clamp body 1. When in use, the device is fixed on the grinding head deflector rod of the grinding machine, so that the device can rotate along with the grinding head deflector rod of the grinding machine; the camshaft is inserted into the bushing 2, the front end of the positioning key pin 3 is inserted into a corresponding key slot on the camshaft, and the threaded pin 4 is screwed down to enable the front end of the threaded pin 4 to abut against the positioning key pin 3, so that the camshaft is fixed.
Two connecting parts 101 are arranged at intervals on the top end of the clamp body 1, and a first fastening screw 5 is screwed on each connecting part 101. In this embodiment, the first fastening screw 5 is a hexagon socket screw. When in use, the device is fixed on the grinding head deflector rod of the grinding machine through two first fastening screws 5.
The fixture body 1 front side wall outwards protrudes and is equipped with location platform 102, and connection through-hole 103 runs through location platform 102, has seted up first fluting 105 and the second fluting 106 that the opening all set up downwards in location platform 102 lower part, and first fluting 105 perpendicular to connection through-hole 103 just is linked together with connection through-hole 103, and second fluting 106 is located connection through-hole 103 downside and runs through fixture body 1 along connection through-hole 103 axial to be linked together with connection through-hole 103 and first fluting 105, be connected with the second fastening screw 13 of cross-over connection second fluting 106 in location platform 102 lower part department in first fluting 105 front side. In this embodiment, a mounting hole located at one side of the second slot 106 and communicated with the second slot 106, and a threaded hole located at the other side of the second slot 106 and communicated with the second slot 106 are formed at the lower portion of the positioning table 102, the threaded hole and the mounting hole are oppositely arranged, the second fastening screw 13 passes through the mounting hole and is screwed with the threaded hole together, the positioning table 102 is locked by the second fastening screw 13, and then the stability of the bushing 2 in the connecting through hole 103 is ensured. In this embodiment, the first slot 105 and the second slot 106 are formed, so that the weight of the clamp body 1 is reduced, and the positioning table 102 can be deformed and locked under the action of the second fastening screw 13. In this embodiment, the second fastening screw 13 is a hexagon socket head cap screw.
A plurality of auxiliary grooves 104 communicated with the connecting through holes 103 are circumferentially formed in the positioning table 102 along the outer sides of the connecting through holes 103, so that on one hand, the weight of the clamp body 1 is reduced, on the other hand, the wall thickness of the positioning table 102 at the auxiliary grooves 104 is reduced, deformation of the positioning table 102 is facilitated, and further locking of the second fastening screw 13 is facilitated.
The bushing 2 is of an open ring structure, a third fastening screw 8 and a fourth fastening screw 7 are screwed on the positioning table 102, the third fastening screw 8 and the fourth fastening screw 7 are positioned at two sides of the opening of the bushing 2, and the inner ends of the third fastening screw 8 and the fourth fastening screw 7 are abutted against the bushing 2. In this embodiment, the third fastening screw 8 is a slotted conical end positioning screw, the bushing 2 is fastened in the positioning table 102 to avoid slipping out, the fourth fastening screw 7 is an inner hexagonal cylindrical end fastening screw, and the clamping range of the bushing 2 can be finely adjusted by locking, loosening and matching the fourth fastening screw 7 with the third fastening screw 8, so that fastening and positioning of clamping shafts with different sizes can be realized.
Each first fastening screw 5 is screwed with a reverse locking nut 6 at the outer side of the corresponding connecting portion 101. In this embodiment, the reverse locking nut 6 is a hexagonal locking nut, and is used for locking the clamp body 1 and the grinding machine grinding head driving lever together, because the clamp body 1 can rotate along with the rotation of the grinding machine grinding head driving lever, and then drives the cam shaft to rotate, so as to realize the grinding of the cam shaft, but in the rotation process, the loosening of the first fastening screw 5 is likely to be caused by the vibration generated by the cutting of the machine tool, therefore, the loosening of the first fastening screw 5 can be avoided by adopting the reverse locking nut 6, and the stability and the safety of the machining process are ensured.
The side wall of the positioning key pin 3 is provided with a strip-shaped positioning key groove 302, the front end of the positioning key pin 3 is provided with an integrally formed positioning block 301, the upper surface and the lower surface of the positioning block 301 are both planar structures, and the front end of the threaded pin 4 is abutted in the positioning key groove 302. In this embodiment, the positioning key groove 302 is configured as a bar structure, and the position of the positioning key pin 3 can be axially adjusted along the positioning key pin 3 during the installation process, so that the positioning key pin can be used with a camshaft.
The rear end of the positioning key pin 3 is an integrally formed and coaxially arranged limiting table 303, the cross section size of the limiting table 303 is smaller than that of the positioning key pin 3, the cross section size of the positioning key pin 3 is matched with that of the positioning hole 107, a limiting plate 11 is fixedly connected to the clamp body 1, a limiting hole 1101 with the size matched with that of the limiting table 303 is formed in the position, corresponding to the positioning hole 107, of the limiting plate 11, and the limiting table 303 penetrates out of the limiting hole 1101 and can horizontally move along the limiting hole 1101. In this embodiment, when the positioning key pin 3 moves horizontally in the positioning hole 107, only the threaded pin 4 needs to be unscrewed and the limiting table 303 needs to be pulled, and in the moving process, the limiting plate 11 is used for limiting, so that the positioning key pin 3 is prevented from slipping off the fixture body 1. In the present embodiment, the limiting plate 11 is fixed on one side of the clamp body 1 by two sixth fastening screws 12, and the sixth fastening screws 12 are hexagon socket head cap screws. In this embodiment, a tool retracting groove is circumferentially formed on the positioning key pin 3 at the inner end of the limiting table 303, so that the positioning key pin 3 can be processed conveniently.
The limiting block 9 with the end face size larger than the limiting hole 1101 is connected to the outer end face of the limiting table 303 through a fifth fastening screw 10. In this embodiment, the fifth fastening screw 10 is a hexagon socket head cap screw, and the stopper 9 is mounted on the outer end surface of the stopper stand 303 by the fifth fastening screw 10, so as to avoid the situation that the positioning key pin 3 is completely inserted into the fixture body 1 and cannot be pulled out when the positioning key pin 3 moves inwards.
In this embodiment, the clamp body 1, the connecting portion 101 and the positioning table 102 are integrally formed.
The working procedure of this embodiment is as follows:
The grinding head deflector rod of the grinding machine is fixed between the two connecting parts 101 through the two first fastening screws 5, so that the clamp body 1 can rotate along with the grinding head deflector rod of the grinding machine; inserting the camshaft into the bushing 2, inserting the front end of the positioning key pin 3 into a corresponding key slot on the camshaft, and then screwing the threaded pin 4 to enable the front end of the threaded pin 4 to be abutted against the positioning key slot 302 of the positioning key pin 3; and then the second fastening screw 13 is screwed down, so that the positioning table 102 clamps the bushing 2, and finally the third fastening screw 8 and the fourth fastening screw 7 are adjusted to further fasten and position the bushing 2, and finally the camshaft is fixed.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (9)
1. The utility model provides a grinding positioner for high accuracy axle which characterized in that: the clamp comprises a clamp body, a bushing and a positioning key pin, wherein a connecting through hole penetrating through the clamp body is formed in the front side wall of the clamp body, a positioning hole communicated with the connecting through hole is formed in one side of the clamp body along the radial direction of the connecting through hole, the positioning key pin is inserted into the positioning hole, the front end of the positioning key pin can penetrate out of the positioning hole and enter the connecting through hole, a threaded pin connected with the positioning key pin is connected onto the clamp body in a threaded manner, and the bushing is embedded in the connecting through hole at the front end of the clamp body.
2. The grinding and positioning device for high-precision shafts according to claim 1, wherein: two connecting parts are arranged at the top end of the clamp body at intervals, and each connecting part is in threaded connection with a first fastening screw.
3. The grinding and positioning device for high-precision shafts according to claim 1, wherein: the fixture body front side wall outwards protrudes and is equipped with the locating bench, and the connecting through hole runs through the locating bench, has seted up first fluting and the second fluting that the opening all set up downwards in the locating bench lower part, and first fluting is perpendicular to connecting through hole and is linked together with connecting through hole, and the second fluting is located the connecting through hole downside and runs through the fixture body along connecting through hole axial to be linked together with connecting through hole and first fluting, is connected with the second fastening screw of cross-over connection second fluting in locating bench lower part department first fluting front side.
4. A grinding and positioning device for a high-precision shaft according to claim 3, characterized in that: a plurality of auxiliary grooves communicated with the connecting through holes are circumferentially arranged on the positioning table along the outer sides of the connecting through holes.
5. A grinding and positioning device for a high-precision shaft according to claim 3, characterized in that: the bushing is of an open ring structure, a third fastening screw and a fourth fastening screw are screwed on the positioning table, and the third fastening screw and the fourth fastening screw are positioned at two sides of the bushing opening and the inner ends of the third fastening screw and the fourth fastening screw are abutted against the bushing.
6. The grinding and positioning device for high-precision shafts according to claim 1, wherein: and each first fastening screw is provided with a reverse locking nut in a screwed manner at the outer side of the corresponding connecting part.
7. The grinding and positioning device for high-precision shafts according to claim 1, wherein: the side wall of the positioning key pin is provided with a strip-shaped positioning key slot, the front end of the positioning key pin is provided with an integrally formed positioning block, the upper surface and the lower surface of the positioning block are both planar structures, and the front end of the threaded pin is abutted in the positioning key slot.
8. The grinding and positioning device for high-precision shafts according to claim 1, wherein: the rear end of the positioning key pin is an integrally formed and coaxially arranged limiting table, the section size of the limiting table is smaller than that of the positioning key pin, the section size of the positioning key pin is matched with the section size of the positioning hole, a limiting plate is fixedly connected to the outer side of the positioning hole on the clamp body, a limiting hole with the size matched with the section size of the limiting table is formed in the position, corresponding to the positioning hole, of the limiting plate, and the limiting table penetrates out of the limiting hole and can horizontally move along the limiting hole.
9. The grinding and positioning device for high-precision shafts according to claim 8, wherein: and a limiting block with the end face size larger than the size of the limiting hole is connected to the outer end face of the limiting table through a fifth fastening screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323078494.9U CN221270801U (en) | 2023-11-14 | 2023-11-14 | Grinding positioning device for high-precision shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323078494.9U CN221270801U (en) | 2023-11-14 | 2023-11-14 | Grinding positioning device for high-precision shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221270801U true CN221270801U (en) | 2024-07-05 |
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ID=91702830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323078494.9U Active CN221270801U (en) | 2023-11-14 | 2023-11-14 | Grinding positioning device for high-precision shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221270801U (en) |
-
2023
- 2023-11-14 CN CN202323078494.9U patent/CN221270801U/en active Active
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