Shaft part turning clamp with automatic centering function

Abstract

The utility model provides a shaft part turning fixture with an automatic centering function, and relates to the technical field of shaft part turning fixtures, the shaft part turning fixture comprises a fixture body, a base is fixedly mounted on the fixture body, a plurality of sliding bolts are movably mounted on the base, a fastening nut is mounted on each sliding bolt in a threaded manner, and the sliding bolts are fixedly mounted on the fixture body. A mounting plate is arranged at the bottom end of the base, and a plurality of guide grooves matched with the sliding bolts are formed in the mounting plate. The lower clamping shell and the upper clamping shell are moved to proper positions by moving the connecting plate, a shaft part is moved to the position between the lower clamping shell and the upper clamping shell, the upper clamping shell and the lower clamping shell are matched with each other to clamp the shaft part, the clamp body is adjusted according to the shaft part, the connecting plate is loosened, and the shaft part is clamped through the elastic force of the first spring. And the lower clamping shell and the upper clamping shell move the shaft part onto the clamp body, so that the shaft part is conveniently supported, and the clamping work is conveniently carried out.

Description

Technical Field

[0001] This utility model relates to the field of turning fixtures for shaft parts, specifically a turning fixture for shaft parts with automatic centering function. Background Technology

[0002] Shaft parts are fundamental components in the field of mechanical manufacturing, and their machining accuracy directly affects the assembly quality and operating performance of mechanical equipment. In turning, the positioning accuracy and clamping efficiency of the fixture are key factors in ensuring the machining quality of the workpiece.

[0003] A search of Chinese patent CN221415741U discloses a fixture for turning shaft parts, including a base with an annular cross-section. During use, several sets of clamping assemblies are arranged near the cutting tool on the base. These clamping assemblies are evenly arranged along the axial direction of the base, and adjacent sets are detachably connected. Each clamping assembly includes several clamping blocks evenly arranged circumferentially on the base. The base has grooves that mate with the clamping assemblies. The clamping assemblies near the base are detachably connected to the grooves. By using multiple clamping assemblies along the workpiece's axial direction, it can accommodate longer shaft parts and allows for segmented clamping of the workpiece, further improving stability during turning, reducing vibration caused by increased workpiece length, and enhancing the machining effect.

[0004] Based on the above search and existing technology, it was found that the above patent has certain defects. When turning shaft parts, the shaft parts are too heavy, making it inconvenient to move the shaft parts to the fixture for clamping. During turning, it is not convenient to block the waste chips, and after turning, it is not convenient to clean the waste chips on the fixture. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a turning fixture for shaft parts with automatic centering function.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] An embodiment of this utility model provides a turning fixture for shaft parts with automatic centering function, including a fixture body, a base fixedly mounted on the fixture body, a plurality of sliding bolts movably mounted on the base, each of the sliding bolts being threaded with a fastening nut, and a mounting plate provided at the bottom end of the base, the mounting plate having a plurality of guide grooves adapted to the sliding bolts;

[0008] The mounting plate is provided with a support mechanism, which includes two sliders that are slidably mounted on two of the guide slots respectively. A frame shell is fixedly mounted on the two sliders. Two first support components are symmetrically arranged on the frame shell. A second support component is provided on each of the first support components. A lower clamping shell is provided on both of the support components. A third support component is provided on each of the second support components. An upper clamping shell that is adapted to the lower clamping shell is provided on both of the third support components.

[0009] Two movable components are symmetrically arranged on the frame, and a push plate is provided on both movable components.

[0010] Furthermore, each pair of sliding bolts is located on the inner side of the same guide groove.

[0011] Furthermore, the first support assembly includes a first limiting shell fixedly mounted on the frame shell, the inner wall of the first limiting shell is connected to a first spring, and the end of the first spring is connected to a first moving block adapted to the first limiting shell.

[0012] Furthermore, the second support assembly includes a fixed shell fixedly mounted on the first movable block, a second spring connected to the inner wall of the fixed shell, a connecting plate adapted to the fixed shell connected to the end of the second spring, and the two connecting plates are together fixed to the lower clamping shell.

[0013] Furthermore, the third support assembly includes a circular sleeve fixedly mounted on the connecting plate, a third spring connected to the inner wall of the circular sleeve, and a connecting frame adapted to the circular sleeve connected to the end of the third spring, and the two connecting frames are together fixed to the upper clamping shell.

[0014] Furthermore, the movable component includes a second limiting shell fixedly mounted on the frame shell, the inner wall of the second limiting shell is connected to a fourth spring, the end of the fourth spring is connected to a second movable block adapted to the second limiting shell, and the two second movable blocks are together fixed to the push plate.

[0015] The above-described solution of this utility model has at least the following beneficial effects:

[0016] 1. In this utility model, by moving the connecting plate, the lower clamping shell and the upper clamping shell are moved to a suitable position. By moving the shaft-like part between the lower clamping shell and the upper clamping shell, the second spring supports the lower clamping shell with its own elastic force, and the third spring supports the upper clamping shell with its own elastic force, so that the upper clamping shell and the lower clamping shell cooperate to clamp the shaft-like part. According to the shaft-like part, the fixture body is adjusted, the connecting plate is released, and the elastic force of the first spring is used to move the lower clamping shell and the upper clamping shell into the fixture body, thereby facilitating the support of the shaft-like part and facilitating the clamping work.

[0017] 2. In this utility model, the frame shell blocks the waste chips generated during turning, and the push plate can clean the waste chips on the frame shell by moving the push plate. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a turning fixture for shaft parts with automatic centering function according to the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of a mounting plate for a turning fixture for shaft parts with automatic centering function according to the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the fixture body of a turning fixture for shaft parts with automatic centering function according to this utility model.

[0021] Figure 4 This is a three-dimensional structural diagram of the frame of a turning fixture for shaft parts with automatic centering function according to the present invention.

[0022] Figure 5 This is an exploded view of the lower clamping shell of a turning fixture for shaft parts with automatic centering function according to this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Fixture body; 2. Base; 3. Sliding bolt; 4. Fastening nut; 5. Mounting plate; 6. Guide groove; 7. Slider; 8. Frame shell; 9. First limiting shell; 10. First spring; 11. First moving block; 12. Fixed shell; 13. Second spring; 14. Connecting plate; 15. Lower clamping shell; 16. Circular sleeve; 17. Third spring; 18. Connecting frame; 19. Upper clamping shell; 20. Second limiting shell; 21. Fourth spring; 22. Second moving block; 23. Push plate. Detailed Implementation

[0025] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0026] like Figures 1 to 5 As shown, an embodiment of this utility model provides a turning fixture for shaft parts with automatic centering function, including a fixture body 1, a base 2 fixedly mounted on the fixture body 1, a plurality of sliding bolts 3 movably mounted on the base 2, a fastening nut 4 threaded on each sliding bolt 3, a mounting plate 5 provided at the bottom end of the base 2, and a plurality of guide grooves 6 adapted to the sliding bolts 3 on the mounting plate 5, with every two sliding bolts 3 located on the inner side of the same guide groove 6.

[0027] In this embodiment of the utility model, the clamp body 1 can automatically center shaft parts. The mounting plate 5 is welded to the turning device. The operator moves multiple sliding bolts 3 into the guide groove 6 in a suitable position. The base 2 is moved between multiple sliding bolts 3 by the clamp body 1. The base 2 is fixed by the sliding bolts 3 and the fastening nut 4. The operator moves the shaft parts into the clamp body 1 and uses the clamp body 1 to clamp the shaft parts.

[0028] Figures 1 to 5 As shown, a support mechanism is provided on the mounting plate 5. The support mechanism includes two sliders 7 that are slidably mounted on two guide grooves 6 respectively. A frame shell 8 is fixedly mounted on the two sliders 7. Two first support components are symmetrically arranged on the frame shell 8. A second support component is provided on each first support component. A lower clamping shell 15 is provided on both support components. A third support component is provided on each second support component. An upper clamping shell 19 that is adapted to the lower clamping shell 15 is provided on both third support components. The first support component includes a first limiting shell 9 fixedly mounted on the frame shell 8. A first spring 10 is connected to the inner wall of the first limiting shell 9. The first spring 10 is connected to a first movable block adapted to the first limiting shell 9 at its end. The second support assembly includes a fixed shell 12 fixedly installed on the first movable block. The inner wall of the fixed shell 12 is connected to a second spring 13. The end of the second spring 13 is connected to a connecting plate 14 adapted to the fixed shell 12. The two connecting plates 14 are fixed together to the lower clamping shell 15. The third support assembly includes a circular sleeve 16 fixedly installed on the connecting plate 14. The inner wall of the circular sleeve 16 is connected to a third spring 17. The end of the third spring 17 is connected to a connecting frame 18 adapted to the circular sleeve 16. The two connecting frames 18 are fixed together to the upper clamping shell 19.

[0029] In this embodiment of the utility model, the operator moves the connecting plate 14, which in turn moves the first moving block 11 along the inner side of the first limiting shell 9 via the fixed shell 12. This causes the connecting plate 14 to move the lower clamping shell 15 and the upper clamping shell 19 to a suitable position. By moving the shaft-like part between the lower clamping shell 15 and the upper clamping shell 19, the second spring 13 uses its own elastic force to support the lower clamping shell 15 via the connecting plate 14, and the third spring 17 uses its own elastic force to support the upper clamping shell 19 via the connecting frame 18. This allows the upper clamping shell 19 and the lower clamping shell 15 to cooperate in clamping the shaft-like part. The clamping body 1 is adjusted according to the shaft-like part, the connecting plate 14 is released, and the first moving block 11 is moved along the inner side of the first limiting shell 9 by the elastic force of the first spring 10. This allows the lower clamping shell 15 and the upper clamping shell 19 to move the shaft-like part onto the clamping body 1, thereby facilitating the support of the shaft-like part and the clamping operation.

[0030] Figures 1 to 5 As shown, two moving components are symmetrically arranged on the frame shell 8. A push plate 23 is provided on both moving components. The moving components include a second limiting shell 20 fixedly installed on the frame shell 8. A fourth spring 21 is connected to the inner wall of the second limiting shell 20. A second moving block 22 adapted to the second limiting shell 20 is connected to the end of the fourth spring 21. The two second moving blocks 22 are fixed together with the push plate 23.

[0031] In this embodiment of the utility model, the frame shell 8 blocks the waste chips generated by turning, and the worker moves the push plate 23 so that the push plate 23 can clean the waste chips on the frame shell 8.

[0032] Release the push plate 23 so that the fourth spring 21 can use its own elastic force to drive the push plate 23 to reset through the second moving block 22.

[0033] Working principle: The operator moves multiple sliding bolts 3 into the guide groove 6 in a suitable position, and moves the base 2 between the multiple sliding bolts 3 through the clamp body 1. The base 2 is fixed by the sliding bolts 3 and the fastening nut 4. The operator moves the lower clamp 15 and the upper clamp 19 to a suitable position by moving the connecting plate 14. By moving the shaft part between the lower clamp 15 and the upper clamp 19, the second spring 13 supports the lower clamp 15 with its own elasticity, and the third spring 17 supports the upper clamp 19 with its own elasticity, so that the upper clamp 19 and the lower clamp 15 cooperate to clamp the shaft part. The clamp body 1 is adjusted according to the shaft part, the connecting plate 14 is loosened, and the lower clamp 15 and the upper clamp 19 move the shaft part into the clamp body 1 by the elasticity of the first spring 10. The clamp body 1 is used to clamp the shaft part.

[0034] After the shaft parts are turned, the workers move the push plate 23 to clean the waste chips on the frame shell 8.

[0035] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A turning fixture for shaft parts with automatic centering function, comprising a fixture body (1), a base (2) fixedly mounted on the fixture body (1), and a plurality of sliding bolts (3) movably mounted on the base (2), each of the sliding bolts (3) being threaded with a fastening nut (4), characterized in that: The base (2) is provided with a mounting plate (5) at its bottom end, and the mounting plate (5) is provided with a plurality of guide grooves (6) that are adapted to the sliding bolts (3); The mounting plate (5) is provided with a support mechanism, which includes two sliders (7) that are slidably mounted on two of the guide grooves (6). A frame shell (8) is fixedly mounted on the two sliders (7). Two first support components are symmetrically arranged on the frame shell (8). A second support component is provided on each of the first support components. A lower clamping shell (15) is provided on both of the support components. A third support component is provided on each of the second support components. An upper clamping shell (19) that is adapted to the lower clamping shell (15) is provided on both of the third support components. Two movable components are symmetrically arranged on the frame (8), and a push plate (23) is provided on both movable components.

2. A turning fixture for shaft parts with automatic centering function according to claim 1, characterized in that: Each pair of sliding bolts (3) is located on the inside of the same guide groove (6).

3. A turning fixture for shaft parts with automatic centering function according to claim 1, characterized in that: The first support assembly includes a first limiting shell (9) fixedly mounted on the frame shell (8), the inner wall of the first limiting shell (9) is connected to a first spring (10), and the end of the first spring (10) is connected to a first moving block (11) adapted to the first limiting shell (9).

4. A turning fixture for shaft parts with automatic centering function according to claim 3, characterized in that: The second support assembly includes a fixed shell (12) fixedly mounted on the first movable block (11). The inner wall of the fixed shell (12) is connected to a second spring (13). The end of the second spring (13) is connected to a connecting plate (14) adapted to the fixed shell (12), and the two connecting plates (14) are together fixed to the lower clamping shell (15).

5. A turning fixture for shaft parts with automatic centering function according to claim 4, characterized in that: The third support assembly includes a circular sleeve (16) fixedly mounted on the connecting plate (14). A third spring (17) is connected to the inner wall of the circular sleeve (16). The end of the third spring (17) is connected to a connecting frame (18) adapted to the circular sleeve (16), and the two connecting frames (18) are fixed together to the upper clamping shell (19).

6. A turning fixture for shaft parts with automatic centering function according to claim 1, characterized in that: The moving component includes a second limiting shell (20) fixedly installed on the frame shell (8). The inner wall of the second limiting shell (20) is connected to a fourth spring (21). The end of the fourth spring (21) is connected to a second moving block (22) adapted to the second limiting shell (20), and the two second moving blocks (22) are fixed together with the push plate (23).

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