Gear shaft machining positioning fixture

Abstract

This application relates to the field of gear shaft machining technology, and in particular to a gear shaft machining positioning fixture, including a base, a center provided on the upper end face of the base, a mounting seat provided on the base, a first groove provided on the upper end face of the mounting seat, a first through hole provided on the side end face of the mounting seat, a U-shaped adjusting plate provided in the first groove, a plurality of evenly spaced second through holes provided on the U-shaped adjusting plate, a connecting plate provided on the U-shaped adjusting plate, a plurality of evenly spaced third through holes provided on the side end face of the connecting plate, a positioning cylinder connected to the connecting plate, the positioning cylinder being coaxially arranged with the center, and a fixing component for fixing the U-shaped adjusting plate and the connecting plate; by providing the U-shaped adjusting plate, the height position of the U-shaped adjusting plate relative to the mounting seat can be adjusted, thereby adjusting the distance between the connecting plate and the positioning cylinder and the base in the vertical direction, so as to achieve stable support for gear shafts of various lengths.

Description

Technical Field

[0001] This application relates to the field of gear shaft machining technology, and in particular to a gear shaft machining positioning fixture. Background Technology

[0002] A gear shaft is a mechanical part that supports rotating parts and rotates with them to transmit motion, torque, or bending moment. It is generally a round metal rod, and different sections can have different diameters. Rotating parts in a machine are mounted on the shaft.

[0003] When machining gear shafts or gears on gear shafts, it is usually necessary to clamp the gear shafts to prevent them from shaking during machining and affecting machining accuracy. Existing positioning fixtures for clamping gear shafts can provide sufficient stability when clamping shorter or more rigid gear shafts, but for longer or less rigid gear shafts, the stability of existing fixtures is poor and they are not suitable for gear shafts of various lengths.

[0004] For example, utility model patent application number 202021010585.2—a gear shaft shaping fixture—includes a fixed base and a fixing mechanism. The fixed base has fixing bolts fixed to its four inner corners, and a fixing frame is positioned at the center of its upper end. A collection drawer is provided inside the fixing frame, and a pull rod is connected to the outside of the collection drawer. A fixing cylinder is fixed at the center of the upper end of the fixing frame, and the fixing mechanism is housed inside the fixing cylinder. This gear shaft shaping fixture features a fixing cylinder that is perpendicular to the fixing frame. This perpendicular arrangement ensures the accuracy of their positions, and the fixed connection prevents the fixing cylinder and frame from shifting during actual use, thus avoiding any impact on the gear shaft shaping accuracy. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a gear shaft machining positioning fixture. The technical problem it solves is that existing gear shaft machining positioning fixtures are unsuitable for long gear shafts with weak rigidity, and suffer from poor stability. To solve the above-mentioned technical problems, the technical solution adopted by this utility model is:

[0006] A gear shaft machining positioning fixture, comprising:

[0007] A base, wherein a top point is fixedly provided at the center of the upper end surface of the base;

[0008] The mounting base is fixedly mounted on the upper end face of the base, and the upper end face of the mounting base has a first groove and the side end face of the mounting base has a first through hole;

[0009] The U-shaped adjusting plate is disposed in the first groove, and the two vertical side plates of the U-shaped adjusting plate are provided with a number of uniform second through holes;

[0010] A connecting plate, which is connected to a U-shaped adjusting plate, has several uniformly spaced third through holes on its side end face;

[0011] A positioning cylinder is fixedly connected to a connecting plate, and the positioning cylinder is coaxially arranged with the center point;

[0012] A fixing component is used to fix the U-shaped adjusting plate to the connecting plate.

[0013] Furthermore, the fixing component includes a first bolt and a locking nut, the locking nut being engaged with the first bolt; the U-shaped adjusting plate and the connecting plate are fixedly connected by the first bolt and the locking nut.

[0014] Furthermore, the mounting base has several fourth through holes on its two opposite end faces, and a second bolt is installed in each of the fourth through holes in a threaded engagement manner.

[0015] Furthermore, a second groove is provided at one end of the connecting plate near the positioning cylinder.

[0016] Furthermore, the positioning cylinder is provided with a fifth through hole and a sixth through hole in an axisymmetric manner. The fifth through hole is provided with a third bolt in a threaded engagement manner, and the sixth through hole is provided with a fourth bolt in a threaded engagement manner.

[0017] Furthermore, both the third and fourth bolts are fixedly provided with arc-shaped abutments at their ends, and an arc-shaped rubber pad is fixedly provided on the inner end face of the arc-shaped abutments.

[0018] Furthermore, the inner circumferential surface of the positioning cylinder is provided with two third grooves in an axisymmetric manner, and the third grooves are connected to the fifth through hole and the sixth through hole.

[0019] The beneficial effects of this utility model are: by setting a U-shaped adjustment plate, the height position of the U-shaped adjustment plate relative to the mounting base can be adjusted, thereby adjusting the distance between the connecting plate and the positioning cylinder and the base in the vertical direction, realizing stable support for gear shafts of various lengths, effectively preventing vibration or displacement caused by unstable support during subsequent processing, and ensuring that the processing accuracy is not adversely affected by stability.

[0020] By setting a third bolt, a fourth bolt, and an arc plate, the two opposing arc plates clamp and fix the gear shaft with the third bolt and the fourth bolt, which is suitable for clamping gear shafts of various diameters and enhances the practicality of the fixture. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a top view of the present invention.

[0023] Figure 3 This is an exploded view of the overall structure of this utility model.

[0024] Figure 4 This is a schematic diagram of a portion of the three-dimensional structure of this utility model.

[0025] In the picture:

[0026] 1. Base; 2. Top; 3. Mounting base; 4. First groove; 5. First through hole; 6. U-shaped adjusting plate; 7. Second through hole; 8. Connecting plate; 9. Third through hole; 10. Positioning cylinder; 11. Fixing component; 110. First bolt; 111. Locking nut; 12. Fourth through hole; 13. Second bolt; 14. Second groove; 15. Fifth through hole; 16. Sixth through hole; 17. Third bolt; 18. Fourth bolt; 19. Arc-shaped abutment plate; 20. Arc-shaped rubber pad; 21. Third groove. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the utility model will now be described in further detail with reference to the accompanying drawings and the following embodiments, so that the public can better understand the implementation method of this utility model. The specific implementation scheme of this utility model is as follows:

[0028] like Figures 1-4 As shown, a gear shaft machining positioning fixture includes a base 1. A center 2 is fixedly disposed at the center of the upper end face of the base 1. A mounting base 3 is fixedly disposed on the upper end face of the base 1. A first groove 4 is formed on the upper end face of the mounting base 3. A first through hole 5 is formed on the side end face of the mounting base 3. A U-shaped adjusting plate 6 is disposed in the first groove 4. Several evenly spaced second through holes 7 are formed on the two vertical side plates of the U-shaped adjusting plate 6. A connecting plate 8 is connected to the U-shaped adjusting plate 6. Several evenly spaced third through holes 9 are formed on the side end face of the connecting plate 8. The connecting plate 8 is fixedly connected to... The positioning cylinder 10 is coaxially arranged with the center point 2, and also includes a fixing component 11 for fixing the U-shaped adjusting plate 6 and the connecting plate 8. By setting the U-shaped adjusting plate 6, the height position of the U-shaped adjusting plate 6 relative to the mounting base 3 can be adjusted, thereby adjusting the distance between the connecting plate 8 and the positioning cylinder 10 and the base 1 in the vertical direction, so as to achieve stable support for gear shafts of various lengths, effectively preventing vibration or displacement caused by unstable support during subsequent processing, and ensuring that the processing accuracy is not adversely affected by stability.

[0029] It should be noted that the fixing component 11 includes a first bolt 110 and a locking nut 111, the locking nut 111 being engaged with the first bolt 110; the U-shaped adjusting plate 6 and the connecting plate 8 are fixedly connected by the first bolt 110 and the locking nut 111; after the first bolt 110 passes through the first through hole 5, the second through hole 7 and the third through hole 9, the locking nut 111 is tightened onto the first bolt 110 to achieve a fixed connection between the connecting plate 8 and the U-shaped adjusting plate 6.

[0030] It should be noted that the mounting base 3 has several fourth through holes 12 on its two opposite end faces, and a second bolt 13 is provided in the fourth through hole 12 in a threaded engagement manner; this structure is used to fix the U-shaped adjusting plate 6 in the first groove 4.

[0031] It should be noted that a second groove 14 is provided at one end of the connecting plate 8 near the positioning cylinder 10.

[0032] Furthermore, the positioning cylinder 10 is provided with a fifth through hole 15 and a sixth through hole 16 in an axisymmetric manner. The fifth through hole 15 is provided with a third bolt 17 in a threaded engagement manner, and the sixth through hole 16 is provided with a fourth bolt 18 in a threaded engagement manner. The fourth bolt 18 is located in the second groove 14. The ends of the third bolt 17 and the fourth bolt 18 are both fixedly provided with arc-shaped abutment plates 19, and the inner end face of the arc-shaped abutment plates 19 is fixedly provided with arc-shaped rubber pads 20. According to the diameter of the gear shaft, rotating the third bolt 17 and the fourth bolt 18 will push the arc-shaped abutment plates 19 to clamp and fix the gear shaft. This structure is suitable for clamping gear shafts of various diameters, enhancing the practicality of the fixture.

[0033] Furthermore, the inner circumferential surface of the positioning cylinder 10 is provided with two third grooves 21 in an axisymmetric manner. The third grooves 21 are connected to the fifth through hole 15 and the sixth through hole 16. This structure is mainly used to temporarily store the arc-shaped abutment plate 19 for clamping and fixing the gear shaft with the same diameter as the positioning cylinder 10.

[0034] The working principle and process of this utility model are as follows:

[0035] Place one end of the gear shaft through the positioning cylinder 10 and onto the top 2. Move the U-shaped adjusting plate 6 along the vertical direction of the first groove 4 until one of the several third through holes 9 and second through holes 7 is at a suitable height and the through hole is axially aligned with the first through hole 5. Pass the first bolt 110 through the first through hole 5, the second through hole 7, and the third through hole 9 in sequence, and tighten the locking nut 111 from the outside to complete the fixing of the U-shaped adjusting plate 6, the connecting plate 8, and the positioning cylinder 10 at the required height position. Then, pass several second bolts 13 through the fourth through hole 12 and tighten them. The other end of the second bolt 13 will press tightly against the side end face of the U-shaped adjusting plate 6, fixing the U-shaped adjusting plate 6 in the first groove 4, further ensuring the stability of the U-shaped adjusting plate 6, the connecting plate 8, and the positioning cylinder 10 fixedly connected to the connecting plate 8. Then, rotate the third bolt 17 and the fourth bolt 18. The third bolt 17 and the fourth bolt 18 will push the arc-shaped abutment 19 closer to the gear shaft until the arc-shaped abutment 19 clamps and fixes the gear shaft.

[0036] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "left," "right," "front," "rear," "lower left," "upper right," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Although this utility model has been described according to a limited number of embodiments, those skilled in the art should understand from the above description that other embodiments can be conceived within the scope of this utility model described herein.

Claims

1. A gear shaft machining positioning fixture, characterized in that, include: A base (1) is provided with a top point (2) fixedly disposed at the center of the upper end surface of the base (1); Mounting base (3), the mounting base (3) is fixedly mounted on the upper end face of the base (1), the upper end face of the mounting base (3) is provided with a first groove (4), and the side end face of the mounting base (3) is provided with a first through hole (5); U-shaped adjusting plate (6), the U-shaped adjusting plate (6) is set in the first groove (4), and the two vertical side plates of the U-shaped adjusting plate (6) are provided with a number of uniform second through holes (7); A connecting plate (8) is connected to a U-shaped adjusting plate (6), and a plurality of uniform third through holes (9) are opened on the side end face of the connecting plate (8); Positioning cylinder (10), which is fixedly connected to connecting plate (8), and the positioning cylinder (10) and the center point (2) are coaxially arranged; Fixing component (11) is used to fix the U-shaped adjusting plate (6) to the connecting plate (8).

2. A gear shaft machining positioning fixture according to claim 1, characterized in that: The fixing component (11) includes a first bolt (110) and a locking nut (111), the locking nut (111) being engaged with the first bolt (110); the U-shaped adjusting plate (6) and the connecting plate (8) are fixedly connected by the first bolt (110) and the locking nut (111).

3. The machining fixture for a gear shaft according to claim 1, characterized in that: The mounting base (3) has several fourth through holes (12) on its two opposite end faces, and a second bolt (13) is provided in the fourth through hole (12) in a threaded engagement manner.

4. The gear shaft machining positioning fixture according to claim 1, characterized in that: The connecting plate (8) has a second groove (14) at one end near the positioning cylinder (10).

5. The gear shaft machining fixture positioning fixture according to claim 1, characterized in that: The positioning cylinder (10) is provided with a fifth through hole (15) and a sixth through hole (16) in an axisymmetric manner. The fifth through hole (15) is provided with a third bolt (17) in a threaded engagement manner, and the sixth through hole (16) is provided with a fourth bolt (18) in a threaded engagement manner.

6. A gear shaft machining positioning fixture according to claim 5, characterized in that: Both the third bolt (17) and the fourth bolt (18) are fixedly provided with arc-shaped abutment plates (19), and an arc-shaped rubber pad (20) is fixedly provided on the inner end face of the arc-shaped abutment plates (19).

7. The gear shaft machining fixture positioning fixture according to claim 1, characterized in that: The inner circumferential surface of the positioning cylinder (10) is provided with two third grooves (21) in an axisymmetric manner. The third grooves (21) are connected to the fifth through hole (15) and the sixth through hole (16).

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