Clamp for clamping eccentric shaft

Abstract

The utility model relates to the technical field of machining, in particular to a clamp for clamping an eccentric shaft, which comprises a connecting flange, a turntable and a clamping auxiliary component, a rotating disc is arranged on the upper end face of the connecting flange, the rotating disc is connected with the movable cavity through a limiting groove formed in the rotating disc, and the clamping auxiliary assembly is arranged on the rotating disc. A motor is fixedly arranged on one side of the movable cavity, an output shaft of the motor is connected with a rotating shaft, the other end of the rotating shaft is movably connected with a bearing arranged in the movable cavity, a gear is arranged on the rotating shaft, and fixing holes are fixedly formed in the gear at equal intervals; the clamping auxiliary assembly is arranged on the rotating disc at the connecting end, used for clamping the eccentric shaft, of the clamp, the gear drives the rack to move, the eccentric shafts with different eccentricity can be machined, the fixing rod at the bottom of the connecting plate is inserted into the fixing hole in the gear, the gear can be locked, the gear is not prone to rotating, looseness during adjustment is avoided, and the machining precision is improved. The production quality of the eccentric shaft is improved, and actual use requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a clamp for mounting an eccentric shaft. Background Technology

[0002] Chinese patent document CN213195689U discloses an eccentric shaft clamp, including a turntable with a connecting flange, a mounting block on the turntable, an insertion hole on the mounting block for inserting a workpiece, and a locking mechanism on the mounting block for locking the workpiece. The turntable also has an adjustment mechanism for adjusting the distance between the axis of the mounting block and the axis of the turntable. The adjustment mechanism includes a groove radially formed on the turntable for sliding against the mounting block, a threaded rod rotatably connected within the groove and running in the same direction as the groove, the threaded rod passing through the mounting block and threadedly engaging with it. The adjustment mechanism also includes a hand crank at one end of the threaded rod for rotating it. This eliminates the need for workers to install shims; workers can adjust the eccentricity required for machining the eccentric shaft simply by rotating the threaded rod, thus improving the clamping efficiency of the eccentric shaft.

[0003] When the above-mentioned solutions and existing technologies clamp the eccentric shaft, and use a threaded rod to limit the machining of the eccentric shaft, the eccentric shaft will generate a large vibration when it is slotted. This vibration will cause one end of the threaded rod to be easily affected by the vibration, resulting in reverse rotation and loosening. This will cause the position of the machined eccentric shaft to deviate, resulting in increased machining errors or even scrapping. Therefore, they cannot meet the actual use requirements. Utility Model Content

[0004] The purpose of this invention is to provide a clamp for mounting an eccentric shaft, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clamp for clamping an eccentric shaft, comprising a connecting flange, a turntable, and clamping auxiliary components;

[0006] The upper end face of the connecting flange is provided with a turntable, and the turntable is connected to the movable cavity through a limiting groove. The clamping auxiliary component is provided on the turntable.

[0007] A motor is fixedly installed on one side of the movable cavity, and the output shaft of the motor is connected to the rotating shaft. The other end of the rotating shaft is movably connected to the bearing installed in the movable cavity. A gear is installed on the rotating shaft, and fixing holes are fixedly installed at equal intervals on the gear.

[0008] Preferably, the clamping auxiliary component includes a rack, a movable groove, and a roller; the rack is disposed in the movable cavity, and the rack is adapted to mesh with the gear on the rotating shaft, and the movable cavity is provided with a movable groove at the bottom of the rack, and the movable groove is adapted to slide with a roller movably connected to one side of the rack.

[0009] Preferably, a sliding groove is fixedly provided on one side of the movable cavity, and a guide rod is fixedly provided in the sliding groove. A slider is movably connected to the guide rod, and the slider is connected to the rack.

[0010] Preferably, the upper end face of the rack is provided with a limiting block that is adapted to and connected to the limiting groove, and the limiting block is provided with a connecting frame, and the left and right sides of the connecting frame are fixedly provided with limiting grooves at equal intervals.

[0011] Preferably, electric push rods are provided on both sides of the connecting frame, and the electric push rods are connected to the arc-shaped clamping block, and a rubber pad is provided on the inner side of the arc-shaped clamping block.

[0012] Preferably, the arc-shaped clamping block is fixedly provided with limit sliders at equal intervals on both the left and right sides, and the limit sliders are slidably connected to the limit grooves.

[0013] Preferably, the upper end face of the turntable is fixedly provided with a connecting hole, and the turntable is provided with a connecting plate, and the bottom of the connecting plate is provided with a fixing rod, and the fixing rod passes through the connecting hole and is adapted to be connected with the fixing hole on the gear, and the connecting plate is fixedly connected to the turntable by a fixing bolt.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model proposes a fixture for clamping eccentric shafts. By setting a clamping auxiliary component on the turntable at the connecting end of the fixture for clamping the eccentric shaft, the gear drives the rack to move, which can process eccentric shafts with different eccentricities. The fixing rod at the bottom of the connecting plate is inserted into the fixing hole on the gear, which can lock the gear, making it difficult for the gear to rotate, avoiding loosening during adjustment, improving the production quality of eccentric shafts, and meeting the actual use requirements. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the left side structure of the clamping auxiliary component of this utility model;

[0020] Figure 5 This is a schematic diagram of the right side of the clamping auxiliary component of this utility model.

[0021] In the diagram: 1. Connecting flange; 2. Turntable; 3. Limiting groove; 4. Movable cavity; 5. Motor; 6. Rotating shaft; 7. Gear; 8. Fixing hole; 9. Rack; 10. Movable groove; 11. Roller; 12. Slide groove; 13. Guide rod; 14. Slider; 15. Limiting block; 16. Connecting frame; 17. Limiting slide groove; 18. Electric push rod; 19. Arc-shaped clamp; 20. Limiting slider; 21. Rubber pad; 22. Connecting hole; 23. Fixing rod; 24. Connecting plate; 25. Fixing bolt. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Please see Figures 1 to 5 This utility model provides three technical solutions:

[0024] Example 1: A clamp for clamping an eccentric shaft includes a connecting flange 1, a turntable 2, and a clamping auxiliary component; the upper end face of the connecting flange 1 is provided with a turntable 2, and the turntable 2 is connected to a movable cavity 4 through a limiting groove 3. The movable cavity 4 is used to place a gear 7 and a rack 9, and the clamping auxiliary component is provided on the turntable 2.

[0025] A motor 5 is fixedly installed on one side of the movable cavity 4, and the output shaft of the motor 5 is connected to the rotating shaft 6. The other end of the rotating shaft 6 is movably connected to the bearing installed in the movable cavity 4. A gear 7 is installed on the rotating shaft 6, and fixing holes 8 are fixedly installed at equal intervals on the gear 7. The fixing holes 8 are used to fix the gear 7.

[0026] Example 2: Based on Example 1, the clamping auxiliary component includes a rack 9, a movable groove 10, and a roller 11; the rack 9 is disposed in the movable cavity 4, and the rack 9 is adapted to mesh with the gear 7 on the rotating shaft 6, and the movable cavity 4 is provided with a movable groove 10 at the bottom of the rack 9, and the movable groove 10 is adapted to slide with the roller 11 movably connected to one side of the rack 9.

[0027] A slide groove 12 is fixedly provided on one side of the movable cavity 4, and a guide rod 13 is fixedly provided in the slide groove 12. A slider 14 is movably connected to the guide rod 13, and the slider 14 is connected to the rack 9.

[0028] Example 3: Based on Example 2, the upper end face of the rack 9 is provided with a limiting block 15 that is adapted to and connected to the limiting groove 3, and a connecting frame 16 is provided on the limiting block 15. Limiting grooves 17 are fixedly provided at equal intervals on the left and right sides of the connecting frame 16. Electric push rods 18 are provided on both sides of the connecting frame 16, and the electric push rods 18 are connected to the arc-shaped clamping block 19. Rubber pads 21 are provided on the inner side of the arc-shaped clamping block 19. Limiting sliders 20 are fixedly provided at equal intervals on the left and right sides of the arc-shaped clamping block 19, and the limiting sliders 20 are slidably connected to the limiting grooves 17.

[0029] The upper end face of the turntable 2 is fixedly provided with a connecting hole 22, and the turntable 2 is provided with a connecting plate 24. The bottom of the connecting plate 24 is provided with a fixing rod 23, and the fixing rod 23 passes through the connecting hole 22 and is adapted to be connected with the fixing hole 8 on the gear 7. The connecting plate 24 is fixedly connected to the turntable 2 by a fixing bolt 25.

[0030] In use, the operator first installs the turntable 2 on the lathe spindle, then places the workpiece to be machined in the connecting frame. The electric push rod 18 drives the arc-shaped clamping block 19 to hold the workpiece in place. Then, the motor 5 drives the gear 7 to rotate. After the gear 7 drives the rack 9 to move, the fixing rod 23 at the bottom of the connecting plate 24 passes through the connecting hole 22 on the turntable 2 and is inserted into the fixing hole 8 on the gear 7. After the fixing bolt 25 is installed, the connecting frame 16 will slide inside the turntable 2. The distance between the axis of the connecting frame 16 and the axis of the turntable 2 will change, and the eccentricity required for machining the eccentric shaft will be adjusted. Finally, the operator rotates the lathe spindle to drive the workpiece to rotate, and the workpiece can be eccentrically machined to form an eccentric shaft.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clamp for mounting an eccentric shaft, characterized in that: Includes a connecting flange (1), a turntable (2), and clamping auxiliary components; The upper end face of the connecting flange (1) is provided with a turntable (2), and the turntable (2) is connected to the movable cavity (4) through a limiting groove (3). The clamping auxiliary component is provided on the turntable (2). A motor (5) is fixedly installed on one side of the movable cavity (4), and the output shaft of the motor (5) is connected to the rotating shaft (6), and the other end of the rotating shaft (6) is movably connected to the bearing installed in the movable cavity (4), and a gear (7) is installed on the rotating shaft (6), and fixing holes (8) are fixedly installed at equal intervals on the gear (7).

2. A fixture for clamping an eccentric shaft as claimed in claim 1, wherein: The clamping auxiliary assembly includes a rack (9), a movable groove (10), and a roller (11). The rack (9) is disposed in the movable cavity (4), and the rack (9) is adapted to mesh with the gear (7) on the rotating shaft (6). The movable cavity (4) has a movable groove (10) at the bottom of the rack (9), and the movable groove (10) is adapted to slide with the roller (11) movably connected to one side of the rack (9).

3. A clamp for clamping an eccentric shaft according to claim 2, characterized in that: A slide groove (12) is fixedly provided on one side of the movable cavity (4), and a guide rod (13) is fixedly provided in the slide groove (12). A slider (14) is movably connected on the guide rod (13), and the slider (14) is connected to the rack (9).

4. A clamp for clamping an eccentric shaft according to claim 3, characterized in that: The upper end face of the rack (9) is provided with a limiting block (15) that is adapted to and connected to the limiting groove (3), and a connecting frame (16) is provided on the limiting block (15), and the left and right sides of the connecting frame (16) are fixedly provided with limiting grooves (17) at equal intervals.

5. A clamp for clamping an eccentric shaft according to claim 4, characterized in that: Electric push rods (18) are provided on both sides of the connecting frame (16), and the electric push rods (18) are connected to the arc-shaped clamp (19), and the inner side of the arc-shaped clamp (19) is provided with a rubber pad (21).

6. A clamp for clamping an eccentric shaft according to claim 5, characterized in that: The arc-shaped clamp (19) is fixedly provided with limit sliders (20) at equal intervals on the left and right sides, and the limit sliders (20) are slidably connected to the limit grooves (17).

7. A clamp for clamping an eccentric shaft according to claim 1, characterized in that: The upper end face of the turntable (2) is fixedly provided with a connecting hole (22), and the turntable (2) is provided with a connecting plate (24). The bottom of the connecting plate (24) is provided with a fixing rod (23), and the fixing rod (23) passes through the connecting hole (22) and is adapted to be connected with the fixing hole (8) on the gear (7). The connecting plate (24) is fixedly connected to the turntable (2) by the fixing bolt (25).

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