Positioning tool for processing special-shaped gear

Abstract

The utility model relates to special-shaped gear machining technical field and disclose a positioning tool for special-shaped gear machining, including installation box, the inside fixed mounting of installation box has second rotating electrical machine, the output fixed mounting of second rotating electrical machine has rotary disc, the top of rotary disc is provided with detachable receiving block, and the receiving block is semicircular ring, and the side surface of receiving block is provided with receiving cavity, and both ends of receiving block all fixed mounting have two first connecting blocks. In the utility model, first rotating electrical machine drives U -shaped pull block horizontal movement, drives first connecting rod linkage first extrusion block and second extrusion block synchronous movement, and the adaptive clamping: second extrusion block promotes the rotation of clamping block around the C -shaped groove of second connecting block, makes the recessed groove camber of clamping block tightly cover special-shaped gear non -circular profile, simultaneously, its addendum is pressed tightly to the inner wall of receiving cavity, and special-shaped gear is under the action of bidirectional extrusion force automatic correction center hole position, improves the positioning accuracy.

Description

Technical Field

[0001] This utility model relates to the field of irregular gear processing technology, and in particular to a positioning fixture for irregular gear processing. Background Technology

[0002] Non-circular gears, also known as irregular gears, are gears whose pitch surface is not a surface of revolution. When they form a gear pair with another gear, their instantaneous angular velocity ratio changes according to a certain predetermined motion law during meshing. Due to their irregular contours and lack of a unified center of rotation, non-circular gears face a core challenge when machining center holes: traditional three-jaw chucks are not suitable for the outer contours of non-circular gears, which means that the center of rotation needs to be calibrated after clamping, which is time-consuming. Furthermore, the accumulation of debris makes manual cleaning inconvenient. To address this, we propose a positioning fixture for machining non-circular gears. Utility Model Content

[0003] The present invention aims to solve the technical problems existing in the prior art and provide a positioning fixture for machining irregular gears.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a positioning fixture for machining irregular gears, comprising a mounting box, a second rotary motor fixedly mounted inside the mounting box, a rotary disk fixedly mounted at the output end of the second rotary motor, a detachable storage block above the rotary disk, the storage block being a semi-circular ring, a storage cavity formed on the side of the storage block, two first connecting blocks fixedly mounted at both ends of the storage block, a second connecting block fixedly mounted on the side of the first connecting block, the second connecting block being a "C"-shaped block, guide grooves formed on the side of the storage block corresponding to the positions of the two first connecting blocks, rotating clamping blocks set inside the two second connecting blocks, grooves formed on the side of the clamping blocks, a movable first connecting rod set inside the grooves, a first pressing block and a second pressing block fixedly mounted on the side of the first connecting rod corresponding to the two sides of the clamping blocks, an mounting cavity formed on the side of the storage block, a fixed first rotary motor set inside the mounting cavity, a pull block fixedly mounted at the output end of the first rotary motor, the pull block being a "U"-shaped block, and the end of the first connecting rod away from the clamping block fixedly mounted on the side of the pull block.

[0005] Preferably, the groove is a rectangular groove, and both the first extrusion block and the second extrusion block are distributed perpendicularly to the first connecting rod.

[0006] Preferably, a dust cover is fixedly installed on the outside of the storage block and the two first connecting blocks. The dust cover is a rectangular block with a "U" shaped groove.

[0007] Preferably, three connecting posts are fixedly installed on the upper end of the rotating disk, and a connecting cylinder adapted to the connecting posts is fixedly installed on the bottom side of the storage block at the position corresponding to the connecting posts.

[0008] Preferably, a connecting ring is fixedly installed on the inner side of each of the three connecting cylinders, and a second connecting rod is fixedly installed on the inner side of the connecting ring. A guide hole is opened at the upper end of the second connecting rod, and a threaded post is fixedly installed at the upper end of the rotating disk. The threaded post passes through the guide hole, and a rotating nut is threadedly connected to the outer side of the threaded post corresponding to the upper part of the second connecting rod.

[0009] Preferably, a circular cone is fixedly installed at the upper end of the connecting column, and a conical cavity adapted to the circular cone at the upper end of the connecting column is provided on the top side of the inner cavity of the connecting cylinder.

[0010] Preferably, the rotating disk is a circular disk that covers the top of the mounting box. Beneficial effects

[0011] This utility model provides a positioning fixture for machining irregularly shaped gears. It has the following advantages:

[0012] (1) The positioning fixture for processing the irregular gear has a first rotary motor driving the U-shaped pull block to move laterally, which drives the first connecting rod to move synchronously with the first extrusion block and the second extrusion block for adaptive clamping: the second extrusion block pushes the clamping block to rotate around the C-shaped groove of the second connecting block, so that the groove surface of the clamping block tightly covers the non-circular contour of the irregular gear, and at the same time presses its tooth tip to the inner wall of the receiving cavity. Under the action of bidirectional extrusion force, the irregular gear automatically corrects the position of the center hole and improves the positioning accuracy.

[0013] (2) The positioning fixture for machining irregular gears has a U-shaped groove closed clamping mechanism in the dust cover, which prevents some of the cutting fluid from entering. When the rotary motor drives the fixture to rotate as a whole, the centrifugal force throws the debris mixed with cutting fluid out along the tangential direction of the rotary disk, which is convenient for cleaning. Attached Figure Description

[0014] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0015] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

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

[0017] Figure 2 This is a partial structural diagram of the storage block of this utility model;

[0018] Figure 3 This is a partial structural diagram of the pull block of this utility model;

[0019] Figure 4 This is a partial structural schematic diagram of the connecting column of this utility model;

[0020] Legend:

[0021] 1. Mounting box; 2. Rotating disk; 3. Storage block; 4. Storage cavity; 5. First connecting block; 6. Second connecting block; 7. Guide groove; 8. Clamping block; 9. Groove; 10. First connecting rod; 11. First pressing block; 12. Second pressing block; 13. First rotary motor; 14. Pulling block; 15. Dust cover; 16. Mounting cavity; 17. Second rotary motor; 18. Connecting cylinder; 19. Connecting column; 20. Connecting ring; 21. Second connecting rod; 22. Guide hole; 23. Threaded column; 24. Rotary nut. Detailed Implementation

[0022] 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.

[0023] like Figures 1-4As shown, a positioning fixture for machining irregular gears includes a mounting box 1. A second rotary motor 17 is fixedly mounted inside the mounting box 1. A rotary disk 2 is fixedly mounted at the output end of the second rotary motor 17. A detachable storage block 3 is positioned above the rotary disk 2. The storage block 3 is a semi-circular ring. A storage cavity 4 is formed on the side of the storage block 3. Two first connecting blocks 5 are fixedly mounted at both ends of the storage block 3. Second connecting blocks 6, which are C-shaped blocks, are fixedly mounted on the side of the first connecting blocks 5. Guide grooves 7 are formed on the side of the storage block 3 corresponding to the positions of the two first connecting blocks 5. The second connecting block 6 has a rotating clamping block 8 inside. A groove 9 is formed on the side of the clamping block 8, and a movable first connecting rod 10 is arranged inside the groove 9. A first pressing block 11 and a second pressing block 12 are fixedly installed on the sides of the first connecting rod 10 corresponding to the two sides of the clamping block 8, respectively. The receiving block 3 has a mounting cavity 16 on its side, and a fixed first rotary motor 13 is arranged inside the mounting cavity 16. A pull block 14, which is a "U"-shaped block, is fixedly installed at the output end of the first rotary motor 13. The end of the first connecting rod 10 away from the clamping block 8 is fixedly installed on the side of the pull block 14. In use, the first rotary motor 13 drives the pull block 14 to move laterally. The pull block 14 drives the first connecting rod 10, the first pressing block 11, and the second pressing block 12 to move laterally. When the two second pressing blocks 12 drive the two clamping blocks 8 to swing, they cause the side of the irregular gear to press against the inner side of the receiving cavity 4, thereby pressing and fixing the outer circle of the irregular gear to locate the rotation center hole of the irregular gear, which facilitates drilling and grinding of the center of the irregular gear. The groove 9 is a rectangular groove. The first pressing block 11 and the second pressing block 12 are both connected to the first connecting rod 10. Vertically distributed, the second extrusion block 12 extrudes the clamping block 8 to fix the irregular gear by extruding it together. The extrusion constraint on the irregular gear is released by the first extrusion block 11 extruding the clamping block 8. Dust covers 15 are fixedly installed on the outside of the storage block 3 and the two first connecting blocks 5. The dust cover 15 is a rectangular block with a "U" shaped groove. Three connecting columns 19 are fixedly installed on the upper end of the rotating disk 2. A connecting cylinder 18 that is adapted to the connecting column 19 is fixedly installed on the bottom side of the storage block 3 corresponding to the position of the connecting column 19. The connecting cylinder 18 is adapted to the connecting column 19 to confirm the position of the storage block 3.

[0024] Connecting rings 20 are fixedly installed on the inner sides of the three connecting cylinders 18. Second connecting rods 21 are fixedly installed on the inner sides of the connecting rings 20. A guide hole 22 is provided at the upper end of the second connecting rod 21. A threaded post 23 is fixedly installed at the upper end of the rotating disk 2, passing through the guide hole 22. A rotating nut 24 is threadedly connected to the outer side of the threaded post 23 above the second connecting rod 21. Rotating the rotating nut 24 presses the second connecting rod 21 downwards, causing the connecting rod 21, along with the connecting rings 20 and connecting cylinders 18, to be pressed downwards. The connecting cylinder 18 drives the storage block 3 to press downward to constrain and fix the movement of the storage block 3. A circular cone is fixedly installed on the upper end of the connecting column 19. The top side of the inside of the connecting cylinder 18 is provided with a conical cavity that matches the circular cone at the upper end of the connecting column 19. The position of the storage block 3 is determined by the cooperation between the inclined surfaces. The rotating disk 2 is a circular disk that covers the mounting box 1. After the debris falls on the rotating disk 2, the second rotating motor 17 drives the rotating disk 2 to rotate, throwing the debris on the rotating disk 2 off the tooling.

[0025] The working principle of this utility model:

[0026] In use, the irregular gear is placed into the storage cavity 4 of the storage block 3, and the first rotary motor 13 is started to pull the U-shaped pull block 14 laterally. The pull block 14 drives the first connecting rod 10 to move, causing the second pressing block 12 to push the clamping block 8 to rotate around the second connecting block 6. The groove 9 of the clamping block 8 adaptively covers the irregular contour of the gear, and at the same time presses the gear tooth tip against the inner wall of the storage cavity 4, completing the center hole positioning. Tighten the rotating nut 24 to press down the second connecting rod 21, and the connecting ring 20 makes the connecting cylinder 18 and the conical surface of the connecting column 19 fit tightly together, locking the position of the storage block 3. Processing stage: The second rotary motor 17 drives the clamped irregular gear to rotate through the rotating disk 2 for drilling or tooth surface processing. Cleaning stage: After processing is completed, start the second rotary motor 17 to drive the rotary disk 2 to rotate at high speed. The debris accumulated on the disk surface is thrown away from the tooling along the tangential direction by centrifugal force; Changeover operation: Loosen the rotary nut 24 and lift the second connecting rod 21 to separate the connecting cylinder 18 and the connecting column 19, and replace the storage block 3 module with one that is compatible with different gear sizes.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A positioning fixture for machining irregularly shaped gears, comprising a mounting box (1), wherein a second rotary motor (17) is fixedly mounted inside the mounting box (1), and a rotary disk (2) is fixedly mounted at the output end of the second rotary motor (17), characterized in that: A detachable storage block (3) is provided above the rotating disk (2). The storage block (3) is a semi-circular ring. A storage cavity (4) is provided on the side of the storage block (3). Two first connecting blocks (5) are fixedly installed at both ends of the storage block (3). A second connecting block (6) is fixedly installed on the side of the first connecting block (5). The second connecting block (6) is a "C" shaped block. A guide groove (7) is provided on the side of the storage block (3) corresponding to the position of the two first connecting blocks (5). A rotating clamping block (8) is provided inside the two second connecting blocks (6). A groove is provided on the side of the clamping block (8). (9) A movable first connecting rod (10) is provided inside the groove (9). The first pressing block (11) and the second pressing block (12) are fixedly installed on the side of the first connecting rod (10) corresponding to the two sides of the clamping block (8). An installation cavity (16) is opened on the side of the storage block (3). A fixed first rotary motor (13) is provided inside the installation cavity (16). A pull block (14) is fixedly installed at the output end of the first rotary motor (13). The pull block (14) is a "U" shaped block. The end of the first connecting rod (10) away from the clamping block (8) is fixedly installed on the side of the pull block (14).

2. The positioning fixture for machining irregularly shaped gears according to claim 1, characterized in that: The groove (9) is a rectangular groove, and the first extrusion block (11) and the second extrusion block (12) are both distributed perpendicularly to the first connecting rod (10).

3. The positioning fixture for machining irregularly shaped gears according to claim 1, characterized in that: The storage block (3) and the two first connecting blocks (5) are fixedly installed with dust covers (15), which are rectangular blocks with "U" shaped grooves.

4. The positioning fixture for machining irregularly shaped gears according to claim 1, characterized in that: Three connecting columns (19) are fixedly installed on the upper end of the rotating disk (2), and a connecting cylinder (18) that is compatible with the connecting column (19) is fixedly installed on the bottom side of the storage block (3) corresponding to the position of the connecting column (19).

5. A positioning fixture for machining irregularly shaped gears according to claim 4, characterized in that: A connecting ring (20) is fixedly installed on the inner side of the three connecting cylinders (18). A second connecting rod (21) is fixedly installed on the inner side of the connecting ring (20). A guide hole (22) is opened at the upper end of the second connecting rod (21). A threaded column (23) is fixedly installed at the upper end of the rotating disk (2). The threaded column (23) passes through the guide hole (22). A rotating nut (24) is threadedly connected to the outer side of the threaded column (23) corresponding to the upper part of the second connecting rod (21).

6. A positioning fixture for machining irregularly shaped gears according to claim 5, characterized in that: A circular cone is fixedly installed at the upper end of the connecting column (19), and a conical cavity adapted to the circular cone at the upper end of the connecting column (19) is provided on the top side of the inner part of the connecting cylinder (18).

7. A positioning fixture for machining irregularly shaped gears according to claim 1, characterized in that: The rotating disk (2) is a circular disk, and the rotating disk (2) covers the mounting box (1).

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