A quick-change tool for a transmission shaft no-load running-in test

Abstract

A quick-change fixture for no-load running-in testing of a drive shaft belongs to the technical field of drive shaft testing equipment. A supporting semi-ring is fitted to the front of the flange, with a first circular hole inside the supporting semi-ring. A first threaded hole is also provided inside the flange. Fixing bolts are fitted to the inner wall of the first circular hole on the front of the supporting semi-ring, and the surfaces of the fixing bolts are threadedly connected to the inner wall of the first threaded hole. This utility model's quick-change fixture for no-load running-in testing of a drive shaft allows for rapid clamping of the drive shaft flange by tightening the locking bolt in the locking block into the nut. Simultaneously, when the locking bolt is separated from the nut, the drive shaft flange can be directly separated from the fixture. Therefore, this fixture allows the tester to quickly, conveniently, and securely install the drive shaft onto the machine tool spindle simply by rotating the locking bolt.

Description

Technical Field

[0001] This utility model relates to the technical field of transmission shaft testing equipment, specifically a quick-change tooling for no-load running-in testing of transmission shafts. Background Technology

[0002] In the manufacturing process of drive shafts, the no-load running-in test is a crucial step in verifying the drive shaft's performance. Traditionally, during the no-load running-in test of the BHJ150 / BHJ180 drive shaft, the drive shaft flange is installed onto the machine tool spindle connecting plate and tailstock connecting plate. During this process, workers must hold the drive shaft, continuously bending over to locate the bolt holes on the machine tool spindle connecting plate and tailstock connecting plate, and tighten six bolts at both ends for fixation. This installation method has many drawbacks, such as being cumbersome, time-consuming, having a large number of screws leading to low installation efficiency, and the repeated removal and removal of screws easily causing wear and damage to the flange end face, affecting the stability and reliability of the installation, and consequently impacting the efficiency and accuracy of the drive shaft running-in test. The frequent bending and holding movements also result in extremely high labor intensity for workers, easily leading to fatigue and injury over long periods. Therefore, there is an urgent need for a quick-change tooling that simplifies the installation process, improves installation efficiency, and reduces labor intensity. Summary of the Invention

[0003] To overcome the shortcomings of the existing technology, the purpose of this invention is to provide a quick-change tooling for the no-load running-in test of a drive shaft, so as to solve the problems of cumbersome installation and operation, low efficiency and poor stability of traditional drive shafts.

[0004] To achieve the above-mentioned objectives, this utility model discloses a quick-change fixture for a drive shaft's no-load running-in test. A supporting semi-ring is fitted to the front of the flange. The supporting semi-ring has a first circular hole inside, and the flange has a first threaded hole inside. Fixing bolts are fitted to the inner wall of the first circular hole on the front of the supporting semi-ring. The surfaces of the fixing bolts are threaded to the inner wall of the first threaded hole. A first U-shaped plate is fixedly connected to the upper surface of the supporting semi-ring. Second threaded holes are formed on both the front and rear sides of the first U-shaped plate. Connecting bolts are threaded to the inner walls of the second threaded holes. A cylinder is rotatably connected to the surface of the connecting bolt, and the surface of the cylinder is rotatably connected to... The device includes an ear plate with a clamping half-ring fixedly connected to its surface. A locking block is fixedly connected to the left side of the clamping half-ring. The locking block has a second circular hole inside, and locking bolts are fitted onto the inner wall of the second circular hole and the upper surface of the locking block. Nuts are threaded onto the surface of the locking bolts, and the bottom of the nuts is fixedly connected to the upper surface of the supporting half-ring. The flange has a fourth circular hole at its center that matches the shape of the drive shaft flange. The flange also has a fifth circular hole for connecting the flange to the machine tool spindle. The supporting half-ring has a first groove that matches the shape of the drive shaft flange, and the clamping half-ring has a second groove that matches the shape of the drive shaft flange.

[0005] Furthermore, a second U-shaped plate is fixedly connected to the front of both the supporting half-ring and the pressing half-ring. A sliding column is fitted onto the inner wall of the second U-shaped plate, the front of the supporting half-ring, and the front of the pressing half-ring. A pressing block is fixedly connected to the end of each sliding column. A third threaded hole is opened inside each sliding column. A third circular hole is opened on the front of the second U-shaped plate. A positioning bolt is fitted onto the inner wall of the third circular hole and the front of the second U-shaped plate. The surface of the positioning bolt is threadedly connected to the inner wall of the third threaded hole. The axes of the sliding columns on the supporting half-ring are distributed at 30-degree intervals, and the axes of the sliding columns on the pressing half-ring are also distributed at 30-degree intervals. The end of the pressing block has an arc-shaped structure.

[0006] Furthermore, the center of the supporting half-ring and the center of the clamping half-ring both coincide with the axis of the flange, the first U-shaped plate is located to the right of the center of the supporting half-ring, and the nut is located to the left of the center of the supporting half-ring.

[0007] Furthermore, a positioning groove is provided at the bottom of the supporting semi-ring, and a positioning block is fitted into the inner wall of the positioning groove. The back of the positioning block is fixedly connected to the front of the flange.

[0008] Furthermore, the inner wall of the first groove of the supporting semi-ring, the inner wall of the second groove of the pressing semi-ring, and the end of the pressing block are all coated with a nylon coating.

[0009] Furthermore, the nylon coating is made of MC nylon material, and the thickness of the nylon coating is 5mm.

[0010] Compared with the prior art, the technical effects achieved by this utility model are as follows:

[0011] 1. The quick-change fixture for the no-load running-in test of the drive shaft of this utility model can be directly fixed to the spindle of the machine tool through a flange. At the same time, after the drive shaft flange is placed between the support half ring and the clamping half ring, the clamping bolt in the locking block can be tightened into the nut to quickly complete the clamping of the drive shaft flange. When the locking bolt is separated from the nut, the drive shaft flange can be directly separated from the fixture. Thus, through this fixture, the tester only needs to turn the locking bolt to achieve quick, convenient and stable installation of the drive shaft on the machine tool spindle, improving the overall efficiency of the no-load running-in test of the drive shaft and reducing labor intensity.

[0012] 2. The quick-change fixture for the no-load running-in test of the transmission shaft of this utility model is provided with a third threaded hole on the slide column. The three third threaded holes are equidistantly distributed along the length of the slide column with the axis of the slide column as the reference. At this time, by tightening the positioning bolt into the third threaded hole at different positions, the distance between the clamping block and the axis of the flange can be changed. By changing the distance between the clamping block and the axis of the flange, the fixture can clamp three different sizes of transmission shafts, thereby improving the application range of the fixture. Attached Figure Description

[0013] Figure 1 This is a front view of the structure of this utility model.

[0014] Figure 2 yes Figure 1 Front view of the middle flange.

[0015] Figure 3 yes Figure 1 Front view of the supporting semi-ring.

[0016] Figure 4 yes Figure 3 Top view.

[0017] Figure 5 yes Figure 1 Front view of the middle compression half ring.

[0018] Figure 6 yes Figure 5 A bottom view.

[0019] Figure 7 yes Figure 1 Top view of the second U-shaped plate.

[0020] Figure 8 yes Figure 7 The front view.

[0021] Figure 9 yes Figure 1 Front view of the middle sliding column and clamping block.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Flange; 2. Supporting half-ring; 3. First round hole; 4. First threaded hole; 5. Fixing bolt; 6. First U-shaped plate; 7. Second threaded hole; 8. Connecting bolt; 9. Cylinder; 10. Ear plate; 11. Clamping half-ring; 12. Locking block; 13. Second round hole; 14. Locking bolt; 15. Nut; 16. Second U-shaped plate; 17. Sliding column; 18. Clamping block; 19. Third threaded hole; 20. Third round hole; 21. Positioning bolt; 22. Positioning groove; 23. Positioning block; 24. Nylon coating; 25. Fourth round hole; 26. Fifth round hole; 27. First groove; 28. Second groove. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9As shown, in this utility model, a quick-change fixture for a drive shaft no-load running-in test has a supporting half-ring 2 fitted to the front of the flange 1. A first circular hole 3 is provided inside the supporting half-ring 2, and a first threaded hole 4 is provided inside the flange 1. Fixing bolts 5 are fitted to the inner wall of the first circular hole 3 on the front of the supporting half-ring 2. The surfaces of the fixing bolts 5 are threadedly connected to the inner wall of the first threaded hole 4. A first U-shaped plate 6 is fixedly connected to the upper surface of the supporting half-ring 2. Second threaded holes 7 are provided on both the front and rear sides of the first U-shaped plate 6. Connecting bolts 8 are threadedly connected to the inner wall of the second threaded holes 7. A cylinder 9 is rotatably connected to the surface of the connecting bolts 8. An ear plate 10 is rotatably connected to the surface of the cylinder 9. A clamping half-ring 11 is fixedly connected to the surface of the ear plate 10. A locking block 12 is fixedly connected to the left side of the clamping half-ring 11. The locking block 12 has a second circular hole 13 inside. The inner wall of the second circular hole 13 and the upper surface of the locking block 12 are fitted with locking bolts 14. The surface of the locking bolts 14 is threaded with nuts 15. The bottom of the nuts 15 is fixedly connected to the upper surface of the supporting half ring 2. The bottom of the supporting half ring 2 has a positioning groove 22. The inner wall of the positioning groove 22 is fitted with a positioning block 23. The back of the positioning block 23 is fixedly connected to the front of the flange 1. The center of the flange 1 has a fourth circular hole 25 that matches the shape of the drive shaft flange. The flange 1 also has a fifth circular hole 26 for connecting the flange 1 to the spindle of the machine tool. The supporting half ring 2 has a first groove 27 that matches the shape of the drive shaft flange. The clamping half ring 11 has a second groove 28 that matches the shape of the drive shaft flange.

[0027] The center of the supporting half-ring 2 and the center of the clamping half-ring 11 are both aligned with the axis of the flange 1. The first U-shaped plate 6 is located to the right of the center of the supporting half-ring 2, and the nut 15 is located to the left of the center of the supporting half-ring 2.

[0028] It should be noted that the tooling can be directly fixed to the machine tool spindle with bolts through the fifth circular hole 26 of the flange 1. The support half ring 2 can be fixed to the flange 1 through the cooperation of the first circular hole 3, the first threaded hole 4 and the fixing bolt 5. When installing the support half ring 2, the first circular hole 3 and the first threaded hole 4 can be aligned by contacting the positioning block 23 with the positioning groove 22. The cylinder 9 can be fixed in the first U-shaped plate 6 through the cooperation of the connecting bolt 8 and the second threaded hole 7. The clamping half ring 11 can rotate around the axis of the cylinder 9 through the ear plate 10, the cylinder 9 and the connecting bolt 8. After the drive shaft flange is placed between the first groove 27 of the support half ring 2 and the second groove 28 of the clamping half ring 11, the clamping of the drive shaft flange can be quickly completed by tightening the locking bolt 14 in the locking block 12 into the nut 15. At the same time, when the locking bolt 14 is separated from the nut 15, the drive shaft flange can be directly separated from the tooling.

[0029] A second U-shaped plate 16 is fixedly connected to the front of both the supporting half-ring 2 and the pressing half-ring 11. A sliding column 17 is fitted to the inner wall of the second U-shaped plate 16, the front of the supporting half-ring 2, and the front of the pressing half-ring 11. A pressing block 18 is fixedly connected to the end of the sliding column 17. A third threaded hole 19 is opened inside the sliding column 17. A third circular hole 20 is opened on the front of the second U-shaped plate 16. A positioning bolt 21 is fitted to the inner wall of the third circular hole 20 and the front of the second U-shaped plate 16. The surface of the positioning bolt 21 is threadedly connected to the inner wall of the third threaded hole 19. The axes of the sliding columns 17 on the supporting half-ring 2 are distributed at 30 degrees, and the axes of the sliding columns 17 on the pressing half-ring 11 are distributed at 30 degrees. The end of the pressing block 18 has an arc-shaped structure.

[0030] The inner wall of the first groove 27 supporting the semi-ring 2, the inner wall of the second groove 28 pressing the semi-ring 11, and the end of the pressing block 18 are all coated with a nylon coating 24. The nylon coating 24 is made of MC nylon material and has a thickness of 5mm.

[0031] It should be noted that by setting a third threaded hole 19 on the slide column 17, and distributing the three third threaded holes 19 along the length of the slide column 17 with the axis of the slide column 17 as the reference, the distance between the clamping block 18 and the axis of the flange 1 can be changed by screwing the positioning bolt 21 into the third threaded hole 19 at different positions. By changing the distance between the clamping block 18 and the axis of the flange 1, the tooling can clamp three different sizes of drive shafts, thereby increasing the range of applications of the tooling.

[0032] By applying a nylon coating 24 to the supporting half-ring 2 and the clamping half-ring 11, the frictional force between the supporting half-ring 2, the clamping half-ring 11 and the drive shaft flange can be increased when the supporting half-ring 2 and the clamping half-ring 11 clamp the drive shaft flange, and the drive shaft flange can be fixed more firmly. At the same time, by applying a nylon coating 24 to the clamping block 18, the frictional force between the clamping block 18 and the drive shaft flange can be increased when the clamping block 18 clamps the drive shaft flange, and the drive shaft flange can be fixed more firmly.

[0033] The working principle of this utility model is as follows: First, the fixture is fixed on the spindle of the machine tool through the fifth circular hole 26 of the flange 1 and the bolts. Then, the drive shaft flange is fixed on the spindle of the machine tool through the fixture. When the diameter of the drive shaft flange and the diameter formed by the first groove 27 of the supporting half ring 2 and the second groove 28 of the clamping half ring 11 are equal, the drive shaft flange is first placed on the inner wall of the first groove 27 of the supporting half ring 2. Then, by rotating the clamping half ring 11, the inner wall of the second groove 28 of the clamping half ring 11 is made to fit with the surface of the drive shaft flange. Then, the locking bolt 14 is inserted into the second circular hole 13 and tightened into the nut 15. At this time, through the cooperation of the locking bolt 14, the nut 15 and the locking block 12, the supporting half ring 2 and the clamping half ring 11 clamp the drive shaft flange, and the drive shaft flange is fixed on the spindle of the machine tool through the fixture.

[0034] When the diameter of the drive shaft flange is smaller than the diameter formed by the first groove 27 of the supporting half ring 2 and the second groove 28 of the clamping half ring 11, first unscrew the positioning bolt 21 from the third threaded hole 19. Then, move the sliding column 17 according to the diameter of the drive shaft flange. When the corresponding third threaded hole 19 is aligned with the third circular hole 20, screw the positioning bolt 21 back into the third threaded hole 19. At this time, the distance between the clamping block 18 and the axis of the flange 1 can be changed according to the diameter of the drive shaft flange. Then, place the drive shaft flange on the clamping block 18 on the supporting half ring 2, and rotate the clamping half ring 11 to make the clamping block 18 on the clamping half ring 11 contact the drive shaft flange. Then, insert the locking bolt 14 into the second circular hole 13 and screw the locking bolt 14 into the nut 15. At this time, through the cooperation of the locking bolt 14, the nut 15 and the locking block 12, the clamping block 18 clamps the drive shaft flange, and the drive shaft flange is fixed on the spindle of the machine tool by this tooling.

[0035] After the drive shaft test is completed, the drive shaft flange can be separated from the tooling by unscrewing the locking bolt 14 from the nut 15.

[0036] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A quick-change fixture for no-load running-in test of a drive shaft, characterized in that: A supporting half-ring (2) is fitted to the front of the flange (1). A first circular hole (3) is opened inside the supporting half-ring (2). A first threaded hole (4) is opened inside the flange (1). Fixing bolts (5) are fitted to the inner wall of the first circular hole (3) and the front of the supporting half-ring (2). The surface of the fixing bolts (5) is threaded to the inner wall of the first threaded hole (4). A first U-shaped plate (6) is fixedly connected to the upper surface of the supporting half-ring (2). A second threaded hole (7) is opened on both the front and rear sides of the first U-shaped plate (6). A connecting bolt (8) is threaded to the inner wall of the second threaded hole (7). A cylinder (9) is rotatably connected to the surface of the connecting bolt (8). An ear plate (10) is rotatably connected to the surface of the cylinder (9). A clamping half-ring is fixedly connected to the surface of the ear plate (10). (11) A locking block (12) is fixedly connected to the left side of the clamping half ring (11). A second round hole (13) is opened inside the locking block (12). Locking bolts (14) are fitted to the inner wall of the second round hole (13) and the upper surface of the locking block (12). Nuts (15) are threadedly connected to the surface of the locking bolts (14). The bottom of the nuts (15) is fixedly connected to the upper surface of the supporting half ring (2). A fourth round hole (25) that matches the shape of the transmission shaft flange is provided in the center of the flange (1). A fifth round hole (26) for connecting the flange (1) to the spindle of the machine tool is also provided on the flange (1). A first groove (27) that matches the shape of the transmission shaft flange is provided on the supporting half ring (2). A second groove (28) that matches the shape of the transmission shaft flange is provided on the clamping half ring (11).

2. The quick-change fixture for no-load running-in test of a transmission shaft according to claim 1, characterized in that: Three second U-shaped plates (16) are fixedly connected to the front of the supporting half ring (2) and the front of the pressing half ring (11). Sliding columns (17) are fitted to the inner wall of the second U-shaped plate (16), the front of the supporting half ring (2) and the front of the pressing half ring (11). A pressing block (18) is fixedly connected to the end of the sliding column (17). A third threaded hole (19) is opened inside the sliding column (17). A third round hole (20) is opened on the front of the second U-shaped plate (16). A positioning bolt (21) is fitted to the inner wall of the third round hole (20) and the front of the second U-shaped plate (16). The surface of the positioning bolt (21) is threadedly connected to the inner wall of the third threaded hole (19). The axes of the sliding columns (17) on the supporting half ring (2) are distributed at 30 degrees, and the axes of the sliding columns (17) on the pressing half ring (11) are distributed at 30 degrees. The end of the pressing block (18) is an arc-shaped structure.

3. The quick-change fixture for no-load running-in test of a transmission shaft according to claim 1, characterized in that: The center of the supporting half-ring (2) and the center of the pressing half-ring (11) are both coincident with the axis of the flange (1). The first U-shaped plate (6) is located to the right of the center of the supporting half-ring (2), and the nut (15) is located to the left of the center of the supporting half-ring (2).

4. The quick-change fixture for no-load running-in test of a transmission shaft according to claim 1, characterized in that: The bottom of the supporting semi-ring (2) is provided with a positioning groove (22), and a positioning block (23) is attached to the inner wall of the positioning groove (22). The back of the positioning block (23) is fixedly connected to the front of the flange (1).

5. The quick-change fixture for no-load running-in test of a transmission shaft according to claim 2, characterized in that: The inner wall of the first groove (27) of the supporting half ring (2), the inner wall of the second groove (28) of the pressing half ring (11) and the end of the pressing block (18) are all coated with a nylon coating (24).

6. The quick-change fixture for no-load running-in test of a transmission shaft according to claim 5, characterized in that: The nylon coating (24) is made of MC nylon material and the thickness of the nylon coating (24) is 5mm.

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