Gear shaft special polishing stick

Abstract

The utility model relates to the field of polishing rod, especially a special polishing rod for gear shaft, which comprises a connecting cylinder and a fixed cylinder one, the inner wall of the connecting cylinder is slidably provided with the fixed cylinder one and the fixed cylinder two which are distributed left and right, the right end of the fixed cylinder one is fixedly connected with a fixed block one, the left end of the fixed cylinder two is fixedly connected with a fixed block two, the fixed block two is located below the fixed block one, the upper end center of the fixed block one and the fixed block two respectively penetrates a limiting hole one and a limiting hole two, the limiting hole one and the limiting hole two correspond to each other, a screw hole one is penetrated on the upper end outer wall of the connecting cylinder, a fixed column is fixedly connected to the lower end inner wall of the connecting cylinder, the utility model is equipped with the fixed cylinder and the connecting cylinder structure, the polishing rod and the polishing strip can be conveniently replaced, the polishing structure can be replaced according to different polishing requirements, the connecting cylinder and the fixed cylinder with the hollow structure can effectively reduce the weight, facilitate long-time holding, and reduce the situation that the grinding accuracy decreases due to holding fatigue.

Description

Technical Field

[0001] This utility model belongs to the field of polishing rods, and specifically relates to a polishing rod for gear shafts. Background Technology

[0002] Gear shaft polishing rods are tools used for precision machining of gear shaft surfaces. They are mainly used to remove burrs, improve surface roughness, enhance dimensional accuracy and fit performance. Their design must take into account the special geometry of the gear shaft to ensure that the machined surface meets the requirements of high wear resistance and low coefficient of friction.

[0003] The grinding surface of existing grinding bars directly contacts the surface of the gear shaft. After long-term use, wear is easily caused by friction. Since the working surface and the body are an integral structure, once local wear exceeds the limit, such as a decrease in grinding accuracy or an excess of surface roughness, the entire grinding bar needs to be scrapped and replaced, resulting in material waste and increased processing costs. Different models of gear shafts have different diameters, lengths, and grinding process requirements. Traditional grinding bars are difficult to adapt to the grinding needs of gear shafts of different specifications. In addition, in order to ensure strength, the integral bar body often adopts a solid structure or a fixed wall thickness design. When grinding manually, the operator is prone to hand tremors due to fatigue from holding it for a long time, which affects the grinding accuracy. Utility Model Content

[0004] To overcome the problems of inconvenience in changing the grinding surface of the grinding rod when using it, and the fact that the solid structure affects the grip, a new type of grinding rod for gear shafts is proposed.

[0005] The technical solution of this utility model is as follows: a special polishing rod for gear shafts, including a connecting cylinder and a fixed cylinder 1. The inner wall of the connecting cylinder is slidably provided with a fixed cylinder 1 and a fixed cylinder 2 distributed left and right. A fixed block 1 is fixedly connected to the right end of the fixed cylinder 1, and a fixed block 2 is fixedly connected to the left end of the fixed cylinder 2. The fixed block 2 is located below the fixed block 1. Limiting holes 1 and 2 are respectively opened through the upper center of the fixed block 1 and the fixed block 2, and the limiting holes 1 and 2 correspond one-to-one. A screw hole 1 is opened through the upper outer wall of the connecting cylinder, and a fixed post is fixedly connected to the lower inner wall of the connecting cylinder. A screw hole 2 is opened at the upper center of the fixed post, and the screw hole 2 corresponds one-to-one with the screw hole 1. A bolt is installed in the internal thread of the screw hole 1. The lower end of the bolt passes through the screw hole 1, the limiting hole 1 and the limiting hole 2 in sequence from top to bottom and is then threaded into the screw hole 2. A polishing strip is fixedly connected to the center of the left end of the fixed cylinder 1, and a polishing rod is fixedly connected to the center of the right end of the fixed cylinder 2.

[0006] Furthermore, the outer wall of the fixed cylinder is provided with four limiting grooves 1 that are equidistantly arranged around the fixed cylinder 1, and a positioning groove 1 is provided in the limiting groove 1 at the upper end.

[0007] Furthermore, four limiting grooves are provided on the outer wall of the fixed cylinder two at equal intervals around the fixed cylinder two, and a positioning groove is provided in the limiting groove two at the upper end.

[0008] Furthermore, four limiting blocks are fixedly connected to the inner wall of the connecting cylinder at equal intervals around the connecting cylinder, and a positioning block is fixedly connected to the outer wall of the upper limiting block.

[0009] Furthermore, both the first limiting groove and the second limiting groove are adapted to the limiting block, and both the first positioning groove and the second positioning groove are adapted to the positioning block.

[0010] Furthermore, a protective pad is fixed to the outer wall of the connecting cylinder, and a slot is opened through the upper outer wall of the protective pad.

[0011] Furthermore, the slots and screw holes correspond one-to-one, and a tapered elastic washer is coaxially fixed below the screw head of the bolt. The washer is provided with strip-shaped radial anti-slip patterns below it.

[0012] The beneficial effects of this utility model are as follows: Fixing blocks one and two can be fixed with bolts, thereby limiting and fixing fixing cylinder one and two to the inner wall of the connecting cylinder. The grinding strip and grinding rod can grind the rotating shaft and gear of the gear shaft. Fixing cylinder one and two can be slidably disassembled by rotating the disassembly bolt, ensuring stability while facilitating the replacement of the grinding strip and grinding rod. Furthermore, the hollow structure of the connecting cylinder, fixing cylinder one, and fixing cylinder two effectively reduces weight. Compared to existing grinding rods for gear shafts, the added fixing cylinder and connecting cylinder structure facilitates the replacement of the grinding rod and grinding strip. The grinding structure can be changed according to different grinding needs. The hollow structure of the connecting cylinder and fixing cylinder effectively reduces weight, making it convenient for long-term holding and reducing the decrease in grinding accuracy due to fatigue. Attached Figure Description

[0013] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0014] Figure 2 The diagram shown is a three-dimensional structural disassembly diagram of this utility model;

[0015] Figure 3 The diagram shows a three-dimensional structure of the fixed cylinder, limiting groove, positioning groove, fixing block and grinding strip of this utility model.

[0016] Figure 4 The diagram shows a three-dimensional structure of the second fixing cylinder, the second limiting groove, the second positioning groove, the second fixing block, and the grinding rod of this utility model.

[0017] Figure 5 The diagram shown is a three-dimensional disassembled view of the connecting cylinder, protective pad, bolt, and washer of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Connecting cylinder; 2. Fixing cylinder one; 3. Fixing cylinder two; 4. Protective pad; 5. Bolt; 6. Limiting groove one; 7. Positioning groove one; 8. Fixing block one; 9. Limiting hole one; 10. Grinding strip; 11. Limiting groove two; 12. Positioning groove two; 13. Fixing block two; 14. Limiting hole two; 15. Grinding rod; 16. Limiting block; 17. Positioning block; 18. Screw hole one; 19. Slot hole; 20. Fixing post; 21. Screw hole two; 22. Washer. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please see Figures 1-5 This utility model provides an embodiment: a special polishing rod for gear shafts, including a connecting cylinder 1 and a fixed cylinder 2. The inner wall of the connecting cylinder 1 is slidably provided with a fixed cylinder 2 and a fixed cylinder 3 distributed left and right. A fixed block 8 is fixedly connected to the right end of the fixed cylinder 2, and a fixed block 13 is fixedly connected to the left end of the fixed cylinder 3. The fixed block 13 is located below the fixed block 8. Limiting holes 9 and 14 are respectively opened through the upper center of the fixed blocks 8 and 13, with the limiting holes 9 and 14 corresponding one-to-one. The upper outer wall of the connecting cylinder 1 has a threaded hole 18. The lower inner wall of the connecting cylinder 1 is fixed with a fixing post 20. The upper center of the fixing post 20 has a threaded hole 21. The threaded hole 21 corresponds one-to-one with the threaded hole 18. A bolt 5 is installed in the threaded hole 18. The lower end of the bolt 5 passes through the threaded hole 18, the limiting hole 9 and the limiting hole 24 from top to bottom and is then threaded into the threaded hole 21. A grinding strip 10 is fixed to the center of the left end of the fixing cylinder 12. A grinding rod 15 is fixed to the center of the right end of the fixing cylinder 23.

[0021] The fixing block 8 and fixing block 13 can be fixed by bolt 5, thereby limiting and fixing the fixing cylinder 2 and fixing cylinder 3 to the inner wall of the connecting cylinder 1. The grinding strip 10 and grinding rod 15 can grind the rotating shaft and gear of the gear shaft. The fixing cylinder 2 and fixing cylinder 3 can be slidably removed by rotating the disassembly bolt 5. While ensuring stability, it is convenient to replace the grinding strip 10 and grinding rod 15. Furthermore, the hollow structure of the connecting cylinder 1, fixing cylinder 2 and fixing cylinder 3 can effectively reduce weight, and an appropriate number of fixing cylinders can be installed as needed for easy gripping and to reduce the possibility of operator fatigue due to prolonged gripping, which may affect grinding accuracy.

[0022] Please see Figures 3-4In this embodiment, the outer wall of the fixed cylinder 2 is provided with four limiting grooves 6 that are equidistantly arranged around the fixed cylinder 2. The upper limiting groove 6 is provided with a positioning groove 7. In use, the rotation of the fixed cylinder 2 can be limited and fixed by the limiting grooves 6, and the positioning groove 7 can be used to conveniently position the installation position of the fixed cylinder 2. The outer wall of the fixed cylinder 3 is provided with four limiting grooves 11 that are equidistantly arranged around the fixed cylinder 3. The upper limiting groove 11 is provided with a positioning groove 12. In use, the rotation of the fixed cylinder 3 can be limited and fixed by the limiting groove 11, and the positioning groove 12 can be used to position the installation position of the fixed cylinder 3.

[0023] Please see Figures 3-5 In this embodiment, four limiting blocks 16 are fixedly connected to the inner wall of the connecting cylinder 1 at equal intervals around the connecting cylinder 1. A positioning block 17 is fixedly connected to the outer wall of the upper limiting block 16. In use, the limiting block 16 can cooperate with the limiting groove 11 and the limiting groove 2. The positioning block 17 can be adapted to the positioning groove 7 and the positioning groove 2. The limiting groove 16 and the limiting groove 2 are both adapted to the limiting block 16. The positioning groove 17 and the positioning groove 2 are both adapted to the positioning block 17. In use, the limiting block 16 can improve the stability of the fixed cylinder 12 and the fixed cylinder 23 during operation. The positioning block 17 can calibrate the installation position of the fixed cylinder 12 and the fixed cylinder 23.

[0024] Please see Figure 5 In this embodiment, a protective pad 4 is fixed to the outer wall of the connecting cylinder 1. A slot 19 is provided through the upper outer wall of the protective pad 4. During use, the protective pad 4 can prevent slippage. The slot 19 can facilitate the installation of the bolt 5. The slot 19 corresponds one-to-one with the screw hole 18. A conical elastic washer 22 is coaxially fixed below the screw head of the bolt 5. The washer 22 has strip-shaped radial anti-slip texture below it. The washer 22 can be compressed by pressing down the screw head of the bolt 5. The washer 22 rebounds to provide axial thrust to the bolt 5, increasing the friction between the thread of the bolt 5 and the thread of the screw hole, thereby improving the stability of the bolt 5 during operation.

[0025] When working, first, align the limiting groove 6 of the fixed cylinder 12 with the limiting block 16 inside the connecting cylinder 1, and align the positioning groove 7 with the positioning block 17. Push the fixed cylinder 12 to slide it into the connecting cylinder 1. Next, align the limiting groove 11 of the fixed cylinder 23 with the limiting block 16 on the other side, and align the positioning groove 12 with the positioning block 17 on the other side. Push the fixed cylinder 23 to slide it into the connecting cylinder 1. Then, align the limiting hole 9, the limiting hole 14 and the screw hole 18, and rotate the mounting bolt 5 so that the bolt 5 passes through the screw hole 18, the limiting hole 9 and the limiting hole 14 from top to bottom. Tighten the bolt 5 and install the lower end of the outer wall thread into the screw hole 21. Finally, grasp the connecting cylinder 1 and hold the protective pad 4 to perform the grinding operation on the gear shaft.

[0026] Through the above steps, bolt 5 can fix fixing block 1 8 and fixing block 2 13, thereby limiting and fixing fixing cylinder 1 2 and fixing cylinder 2 3 to the inner wall of connecting cylinder 1. Grinding strip 10 and grinding rod 15 can grind the shaft and gear of the gear shaft. By rotating and disassembling bolt 5, fixing cylinder 1 2 and fixing cylinder 2 3 can be slidably disassembled. While ensuring stability, it is convenient to replace grinding strip 10 and grinding rod 15. The hollow structure of connecting cylinder 1, fixing cylinder 1 2 and fixing cylinder 2 3 can effectively reduce weight and solve the problem that it is inconvenient to replace the grinding surface of the gear shaft grinding rod when using it, and the solid structure affects the grip.

Claims

1. A special polishing bar for gear shafts, comprising a connecting cylinder (1) and a fixing cylinder (2), characterized in that: The inner wall of the connecting cylinder (1) is slidably provided with a fixed cylinder one (2) and a fixed cylinder two (3) distributed on the left and right. The right end of the fixed cylinder one (2) is fixedly connected to a fixed block one (8), and the left end of the fixed cylinder two (3) is fixedly connected to a fixed block two (13). The fixed block two (13) is located below the fixed block one (8). The upper center of the fixed block one (8) and the fixed block two (13) are respectively provided with a limiting hole one (9) and a limiting hole two (14). The limiting hole one (9) and the limiting hole two (14) correspond one to one. The upper outer wall of the connecting cylinder (1) is provided with a screw hole one (18). A fixing post (20) is fixed to the inner wall of the lower end of the connecting cylinder (1). A screw hole (21) is opened at the center of the upper end of the fixing post (20). The screw hole (21) corresponds to the screw hole (18). A bolt (5) is installed in the screw hole (18). The lower end of the bolt (5) passes through the screw hole (18), the limiting hole (9) and the limiting hole (24) from top to bottom and is then installed in the screw hole (21). A grinding strip (10) is fixed to the center of the left end of the fixing cylinder (2). A grinding rod (15) is fixed to the center of the right end of the fixing cylinder (3).

2. The gear shaft polishing bar according to claim 1, characterized in that: The outer wall of the fixed cylinder 1 (2) is provided with four limiting grooves 1 (6) that are equidistantly arranged around the fixed cylinder 1 (2), and a positioning groove 1 (7) is provided in the limiting groove 1 (6) at the upper end.

3. The gear shaft polishing bar according to claim 2, characterized in that: The outer wall of the fixed cylinder 2 (3) is provided with four limiting grooves 2 (11) that are equidistantly arranged around the fixed cylinder 2 (3), and a positioning groove 2 (12) is provided in the limiting groove 2 (11) at the upper end.

4. The grinding bar for gear shafts according to claim 3, characterized in that: The inner wall of the connecting cylinder (1) is fixed with four limiting blocks (16) that are equidistantly surrounding the connecting cylinder (1), and the outer wall of the limiting block (16) at the upper end is fixed with a positioning block (17).

5. A special polishing bar for gear shafts according to claim 4, characterized in that: Limiting groove 1 (6) and limiting groove 2 (11) are both adapted to limiting block (16), and positioning groove 1 (7) and positioning groove 2 (12) are both adapted to positioning block (17).

6. The gear shaft polishing bar according to claim 5, characterized in that: A protective pad (4) is fixed to the outer wall of the connecting cylinder (1), and a slot (19) is opened through the upper outer wall of the protective pad (4).

7. A grinding bar for gear shafts according to claim 6, characterized in that: The slot (19) corresponds one-to-one with the screw hole (18). A conical washer (22) is coaxially fixed below the screw head of the bolt (5). The washer (22) has a strip-shaped radial anti-slip pattern below it.

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