Clamping tool for slewing bearing machining

Abstract

The utility model discloses a slewing bearing machining clamping tool in the technical field of machining clamps, which comprises a fixing frame, a first clamping plate and a third clamping plate, a positioning plate is arranged on the fixing frame, a threaded rod is arranged on the positioning plate, a connecting block is arranged at the right end of the threaded rod, a rack is arranged at the right end of the connecting block, and a clamping plate is arranged on the first clamping plate. A first gear is arranged on the upper portion of the rack, a first connecting rod is arranged on the first gear, a first pin shaft is arranged on the first connecting rod, a second connecting rod is arranged on the upper portion of the right side of the fixing frame, a second pin shaft is arranged on the second connecting rod, and a second gear is arranged at the bottom of the rack. And a third connecting rod is arranged on the second gear, the second connecting rod and the first connecting rod move in parallel, and the fourth connecting rod and the third connecting rod move in parallel, so that the angle of the clamping surface is not changed in the movement clamping process of the first clamping plate and the second clamping plate, and the slewing bearings with different sizes are well fixed.

Description

Technical Field

[0001] This utility model relates to the field of machining fixture technology, specifically a slewing bearing machining clamping fixture. Background Technology

[0002] Slewing bearings are commonly used mechanical components and are widely applied in various fields. During the processing and production of slewing bearings, tooling fixtures are required to fix them. For example, in the slewing bearing assembly fixture disclosed in Chinese patent literature (application number: CN202021198571.8), the rotation of the rotating block drives the clamping head to fix the slewing bearing. The rotating block rotates around the fulcrum connected to the fixed plate. During the rotation, the clamping head moves in a circular motion. The end of the clamping head used to fix the slewing bearing cannot be in a horizontal state. The diameter of the slewing bearing and the center of the connection point between the rotating block and the two ends of the fixed plate are the same. To fix the slewing bearing, one end of the clamping head is in a horizontal state and in complete contact with the side of the slewing bearing. If the diameter of the slewing bearing increases or decreases, one end of the clamping head is in an inclined state, which cannot fix the bearing well. The clamping head fixes by a single rotation and cannot distribute the clamping force. The slewing bearing is subjected to a large clamping force, which easily causes wear on the surface of the slewing bearing.

[0003] Therefore, we propose a slewing bearing machining clamping fixture. Utility Model Content

[0004] The purpose of this utility model is to provide a slewing bearing machining clamping fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a slewing bearing machining clamping fixture, comprising a fixed frame, a first clamping plate, and a second clamping plate. A positioning plate is provided on the fixed frame, and a threaded rod is provided on the positioning plate. A connecting block is provided at the right end of the threaded rod, and a rack is provided at the right end of the connecting block. A first gear is provided on the upper part of the rack, and a first connecting rod is provided on the first gear. A first pin is provided on the first connecting rod. A second connecting rod is provided on the upper right side of the fixed frame, and a second pin is provided on the second connecting rod. A second gear is provided at the bottom of the rack, and a third connecting rod is provided on the second gear. A fourth pin is provided on the third connecting rod. A fourth connecting rod is provided on the lower right side of the fixed frame, and a fourth pin is provided on the fourth connecting rod.

[0006] Furthermore, the left half of the first clamping plate is provided with a first mounting groove, and the right ends of the first connecting rod and the second connecting rod are both installed in the first mounting groove by means of pins.

[0007] Furthermore, the left half of the second clamping plate is provided with a second mounting groove, and the right ends of the third connecting rod and the fourth connecting rod are both installed in the second mounting groove by means of pins.

[0008] Furthermore, the left end of the first connecting rod and the first gear are both fixed in the fixing frame by the first pin, and the left end of the first connecting rod and the first gear are both fixedly connected to the first pin.

[0009] Furthermore, the left end of the third connecting rod and the second gear are both fixed in the fixing frame by the third pin, and the left end of the third connecting rod and the second gear are both fixedly connected to the third pin.

[0010] Furthermore, the middle part of the positioning plate and the middle part of the left end of the fixing frame are both provided with threaded holes that cooperate with the threaded rod, and the right end of the threaded rod is connected to the connecting block through a bearing.

[0011] Furthermore, a handle is provided at the left end of the threaded rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: rotating the threaded rod causes the first gear and the second gear to rotate in opposite directions, thus fixing the slewing bearing. The slewing bearing is fixed by rack and pinion transmission, which makes the fixing process more stable. Furthermore, the first and second clamping plates are supported by the first, second, third, and fourth connecting rods, which effectively disperses the clamping force, reduces the risk of deformation, and is suitable for high-precision machining. The clamping force is evenly applied to both sides of the workpiece, reducing local stress concentration and protecting the workpiece surface. At the same time, the second connecting rod moves parallel to the first connecting rod, and the fourth connecting rod moves parallel to the third connecting rod, so that the clamping surface angle of the first and second clamping plates remains unchanged during the clamping process, thereby effectively fixing slewing bearings of different sizes. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the fixing frame of this utility model.

[0015] In the diagram: 1. Fixing frame; 2. First clamping plate; 21. First mounting slot; 3. Second clamping plate; 31. Second mounting slot; 4. Positioning plate; 5. Threaded rod; 6. Connecting block; 7. Rack; 8. First gear; 9. First connecting rod; 10. First pin; 11. Second connecting rod; 12. Second pin; 13. Second gear; 14. Third connecting rod; 15. Third pin; 16. Fourth connecting rod; 17. Fourth pin; 18. Handle. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-2 This utility model provides a technical solution: a slewing bearing machining clamping fixture, including a fixed frame 1, a first clamping plate 2, and a second clamping plate 3. A positioning plate 4 is provided on the fixed frame 1, a threaded rod 5 is provided on the positioning plate 4, a connecting block 6 is provided at the right end of the threaded rod 5, a rack 7 is provided at the right end of the connecting block 6, a first gear 8 is provided on the upper part of the rack 7, a first connecting rod 9 is provided on the first gear 8, a first pin 10 is provided on the first connecting rod 9, a second connecting rod 11 is provided on the upper right side of the fixed frame 1, and a second pin 12 is provided on the second connecting rod 11. A second gear 13 is located at the bottom of the rack 7, a third connecting rod 14 is mounted on the second gear 13, and a fourth pin 17 is mounted on the third connecting rod 14. A fourth connecting rod 16 is located on the lower right side of the fixing frame 1, and a fourth pin 17 is mounted on the fourth connecting rod 16 to fix the slewing bearing. Threaded holes that mate with the threaded rod 5 are located in the middle of the positioning plate 4 and the middle of the left end of the fixing frame 1. During the rotation of the threaded rod 5, the connecting block 6 is pushed to the right, which in turn drives the rack 7 to move to the right. Simultaneously, the rack 7 drives the first gear 8 and the second gear. 13 rotates, the first gear 8 moves the first connecting rod 9 upward, the first connecting rod 9 drives the first clamping plate 2 upward, the second gear 13 drives the fourth clamping plate 3 downward through the third connecting rod 14, the first clamping plate 2 and the second clamping plate 3 open, and the slewing bearing is placed between the first clamping plate 2 and the second clamping plate 3. Rotate the threaded rod 5, rotate the threaded rod 5 in the opposite direction, so that the first gear 8 and the second gear 13 rotate in opposite directions, and fix the slewing bearing. The slewing bearing is fixed by rack and pinion 7 and gear transmission, the fixing process of the slewing bearing is relatively smooth, and the first clamping plate 13 is also fixed by the first gear 8. Plate 2 and the second clamping plate 3 are supported by the first connecting rod 9, the second connecting rod 11, the third connecting rod 14 and the fourth connecting rod 16, which effectively disperses the clamping force, reduces the risk of deformation, is suitable for high-precision machining, and makes the clamping force evenly applied to both sides of the workpiece, reducing local stress concentration and protecting the workpiece surface. The second connecting rod 11 moves parallel to the first connecting rod 9, and the fourth connecting rod 14 moves parallel to the third connecting rod 13, so that the clamping surface angle of the first clamping plate 2 and the second clamping plate 3 remains unchanged during the movement clamping process, thereby effectively fixing the slewing bearings of different sizes.

[0018] Reference embodiment: The left half of the first clamping plate 2 is provided with a first mounting groove 21. The right ends of the first connecting rod 9 and the second connecting rod 11 are both installed in the first mounting groove 21 by means of pins. The left half of the second clamping plate 3 is provided with a second mounting groove 31. The right ends of the third connecting rod 14 and the fourth connecting rod 16 are both installed in the second mounting groove 31 by means of pins. The first clamping plate 2 and the second clamping plate 3 fix the slewing bearing. The first connecting rod 9, the second connecting rod 11, the third connecting rod 14 and the fourth connecting rod 16 rotate by means of pins.

[0019] Reference embodiment: The left end of the first connecting rod 9 and the first gear 8 are both fixed in the fixed frame 1 by the first pin 10, and the left end of the first connecting rod 9 and the first gear 8 are both fixedly connected to the first pin 10. The left end of the third connecting rod 14 and the second gear 13 are both fixed in the fixed frame 1 by the third pin 15, and the left end of the third connecting rod 14 and the second gear 13 are both fixedly connected to the third pin 15.

[0020] Reference embodiment: The middle part of the positioning plate 4 and the middle part of the left end of the fixing frame 1 are both provided with threaded holes that cooperate with the threaded rod 5. The right end of the threaded rod 5 is connected to the connecting block 6 through a bearing. The left end of the threaded rod 5 is provided with a handle 18. During the rotation process of the threaded rod 5, by cooperating with the threaded hole, the threaded rod 5 drives the rack 7 to move through the connecting block 6.

[0021] 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 rotary bearing machining clamping tool, comprising a fixing frame (1), a first clamping plate (2) and a second clamping plate (3), characterized in that: The fixed frame (1) is provided with a positioning plate (4), the positioning plate (4) is provided with a threaded rod (5), the right end of the threaded rod (5) is provided with a connecting block (6), the right end of the connecting block (6) is provided with a rack (7), the upper part of the rack (7) is provided with a first gear (8), the first gear (8) is provided with a first connecting rod (9), the first connecting rod (9) is provided with a first pin shaft (10), the right side of the upper part of the fixed frame (1) is provided with a second connecting rod (11), the second connecting rod (11) is provided with a second pin shaft (12), the bottom of the rack (7) is provided with a second gear (13), the second gear (13) is provided with a third connecting rod (14), the third connecting rod (14) is provided with a fourth pin shaft (17), the right side of the lower part of the fixed frame (1) is provided with a fourth connecting rod (16), and the fourth connecting rod (16) is provided with a fourth pin shaft (17).

2. The machining clamping tool for a slewing bearing according to claim 1, characterized in that: The left half of the first clamping plate (2) is provided with a first mounting groove (21), and the right ends of the first connecting rod (9) and the second connecting rod (11) are both installed in the first mounting groove (21) through a pin shaft.

3. The machining clamping tool for a slewing bearing according to claim 1, characterized in that: The left half of the second clamping plate (3) is provided with a second mounting groove (31), and the right ends of the third connecting rod (14) and the fourth connecting rod (16) are both installed in the second mounting groove (31) through a pin shaft.

4. The machining clamping tool for a slewing bearing according to claim 1, characterized in that: The left end of the first connecting rod (9) and the first gear (8) are both fixed in the fixed frame (1) through the first pin shaft (10), and the left end of the first connecting rod (9) and the first gear (8) are both fixedly connected with the first pin shaft (10).

5. The machining clamping tool for a slewing bearing according to claim 1, characterized in that: The left end of the third connecting rod (14) and the second gear (13) are both fixed in the fixed frame (1) through the third pin shaft (15), and the left end of the third connecting rod (14) and the second gear (13) are both fixedly connected with the third pin shaft (15).

6. The machining clamping tool for a slewing bearing according to claim 1, characterized in that: The middle part of the positioning plate (4) and the middle part of the left end of the fixed frame (1) are both provided with threaded holes matched with the threaded rod (5), and the right end of the threaded rod (5) is connected with the connecting block (6) through a bearing.

7. The machining clamping tool for a slewing bearing according to claim 1, characterized in that: The left end of the threaded rod (5) is provided with a handle (18).

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