Press fitting tool

Abstract

The utility model provides a press fitting tool, including slider and locating post, slider is provided with first through-hole, one end of locating post is slideably provided in the first through-hole, the inner wall of first through-hole and the end portion of one end of locating post enclose to form locating groove, locating hole is provided on locating post. The press-fitting tool is simple in structure, the positioning effect between the pressing ring and the output shaft of the motor gear box can be effectively guaranteed, the probability that the output shaft of the motor gear box is damaged in the press-fitting process is reduced, and therefore the yield of production and manufacturing of the motor gear box is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a press-fitting tool. Background Art

[0002] A motor gearbox is a device that reduces motor speed and increases output torque. During the manufacturing process, a retaining ring is pressed onto the motor gearbox's output shaft to secure the shaft axially. The retaining ring has an interference fit with the motor gearbox's output shaft, making it difficult to position the retaining ring during press-fitting. This can easily lead to damage to the gearbox's output shaft due to inaccurate press-fit positioning. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a press-fitting tool to solve the problem of difficulty in positioning the retaining ring and the output shaft during the press-fitting process.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: to provide a press-fitting tool, further including a positioning seat and a positioning column, the positioning seat is provided with a first through hole, one end of the positioning column can be movably arranged in the first through hole so that the inner wall of the first through hole and the end of one end of the positioning column are enclosed to form a positioning groove, and the positioning column is provided with a positioning hole.

[0005] Furthermore, it includes a base and a first elastic member, one end of the first elastic member abuts against the base, and the other end of the first elastic member abuts against the positioning seat.

[0006] Furthermore, it also includes a guide rod, which is arranged on the base, the first elastic member is sleeved on the guide rod, and the positioning seat is provided with a first through hole, and the guide rod passes through the first through hole.

[0007] Furthermore, it also includes a sliding bearing, which is arranged in the first through hole and sleeved on the guide rod.

[0008] Furthermore, a limiting block is provided on the positioning column.

[0009] Furthermore, it also includes a crimping assembly, which is arranged above the positioning hole.

[0010] Furthermore, the crimping assembly includes a connecting rod and a crimping head connected to the connecting rod, and the connecting rod is provided with an abutment block.

[0011] Furthermore, the crimping assembly also includes a pin and a second elastic member, a third through hole is opened on the crimping head, the connecting rod is arranged in the third through hole, the connecting rod is provided with a pin hole connected to the third through hole, the connecting rod is provided with a guide groove extending along its axial direction, one end of the pin is arranged in the pin hole, and the other end of the pin is slidably arranged in the guide groove, a limiting protrusion is provided on the outer wall of the connecting rod, the second elastic member is sleeved on the connecting rod, and one end of the second elastic member abuts against the limiting protrusion, and the other end of the second elastic member abuts against the crimping head.

[0012] Furthermore, a guide protrusion is provided on the positioning seat, and a guide groove is provided on a side of the guide protrusion close to the first through hole.

[0013] Furthermore, it includes a plurality of magnetic columns, the guide groove is provided with a plurality of mounting holes along its extension direction, the plurality of magnetic columns are arranged in a one-to-one correspondence with the plurality of mounting holes, and the magnetic columns are arranged in the mounting holes.

[0014] The beneficial effects of the present invention are as follows: the press-fitting tool provided by the present invention can position the retaining ring through the positioning groove, and the output shaft of the motor gearbox through the positioning hole on the positioning column. During the press-fitting process, the motor gearbox drives the slider to slide relative to the positioning column, and the output shaft moves along the length of the positioning hole and passes through the center hole of the retaining ring, thereby ensuring the concentricity of the output shaft and the center hole during the press-fitting process. The press-fitting tool designed by the present invention has a simple structure, can effectively ensure the positioning effect between the press ring and the output shaft of the motor gearbox, and reduce the probability of damage to the output shaft of the motor gearbox during the press-fitting process, thereby improving the yield rate of the motor gearbox production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the press-fitting tooling of the present invention in one embodiment;

[0016] Figure 2 for Figure 1 Structural exploded view of the middle slider, positioning column and base;

[0017] Figure 3 for Figure 1 Structural explosion diagram of the medium pressure connection assembly;

[0018] Figure 4 for Figure 1 Schematic diagram of the medium crimping tooling in use.

[0019] Description of labels:

[0020] 1. Slider; 11. First through hole; 12. Second through hole; 13. Guide protrusion; 131. Guide groove; 132. Mounting hole;

[0021] 2. Positioning column; 21. Positioning hole; 22. Limit block;

[0022] 3. Positioning groove;

[0023] 4. Base;

[0024] 5. a first elastic member;

[0025] 6. Guide rod;

[0026] 7. Crimping assembly; 71. Connecting rod; 711. Guide groove; 712. Abutment block; 72. Crimping head; 721. Third through hole; 722. Pin hole; 73. Pin; 74. Second elastic member;

[0027] 8. Magnetic column;

[0028] 9. Sliding bearings;

[0029] 10. Motor gearbox; 101. Output shaft; 102. Retaining ring. DETAILED DESCRIPTION

[0030] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

[0031] Please refer to Figures 1 to 4 , provides a press-fitting tool, further comprising a positioning seat and a positioning column 2, the positioning seat is provided with a first through hole 11, one end of the positioning column 2 is movably provided in the first through hole 11, so that the inner wall of the first through hole 11 and the end of one end of the positioning column form a positioning groove 3, and the positioning column 2 is provided with a positioning hole 21.

[0032] As can be seen from the above description, the beneficial effect of the present invention is that the press-fitting tool provided by the present invention can position the retaining ring 102 through the positioning groove 3, and position the output shaft 101 of the motor gear box 10 through the positioning hole 21 on the positioning column 2. During the press-fitting process, the motor gear box 10 will drive the slider 1 to slide relative to the positioning column 2, and the output shaft 101 moves along the length direction of the positioning hole 21, passing through the center hole of the retaining ring 102, thereby ensuring the concentricity of the output shaft 101 and the center hole during the press-fitting process. The press-fitting tool designed by the present invention has a simple structure, can effectively ensure the positioning effect between the press ring and the output shaft 101 of the motor gear box 10, and reduce the probability of damage to the output shaft 101 of the motor gear box 10 during the press-fitting process, thereby improving the yield rate of the motor gear box 10 production.

[0033] Furthermore, it includes a base 4 and a first elastic member 5 , one end of the first elastic member 5 abuts against the base 4 , and the other end of the first elastic member 5 abuts against the positioning seat.

[0034] From the above description, it can be seen that during the press-fitting process, the end of the main body of the motor gear box 10 can abut against the slider 1 and drive the slider 1 to move toward the base 4. During this process, the elastic member can play a buffering role on the slider 1, thereby reducing the rigid impact force of the motor gear box 10 during the press-fitting process; in addition, after the press-fitting process is completed, the slider 1 can automatically reset under the action of the first elastic member 5, and the press-fitting tooling is convenient and quick to use.

[0035] Furthermore, it includes a guide rod 6, which is arranged on the base 4, and the first elastic member 5 is sleeved on the guide rod 6. The positioning seat is provided with a first through hole 11, and the guide rod 6 passes through the first through hole 11.

[0036] As can be seen from the above description, the guide rod 6 can ensure that the slider 1 moves along the circumferential direction of the guide rod 6 during the crimping process, so as to avoid the positioning seat from being skewed and shifted during the crimping process and damaging the output shaft 101 of the motor gearbox 10.

[0037] Furthermore, it includes a sliding bearing 9 , which is disposed in the first through hole 11 and sleeved on the guide rod 6 .

[0038] It can be seen from the above description that the sliding bearing 9 can reduce the sliding friction between the positioning seat and the guide rod 6 and improve the smoothness between the positioning seat and the guide rod 6.

[0039] Furthermore, a limiting block 22 is provided on the positioning column 2 .

[0040] As can be seen from the above description, the limit block 22 can limit the relative sliding stroke between the slider 1 and the positioning column 2, thereby ensuring the consistency of the position of the retaining ring 102 on each motor gearbox 10.

[0041] Furthermore, it also includes a crimping assembly 7 , which is arranged above the positioning hole 21 .

[0042] It can be seen from the above description that the crimping assembly 7 can be connected to an external press.

[0043] Furthermore, the crimping assembly 7 includes a connecting rod 71 and a crimping head 72 connected to the connecting rod 71 , and an abutment block 712 is provided on the connecting rod 71 .

[0044] From the above description, it can be seen that the connecting rod 71 is used to connect to an external press, and the crimping head 72 is used to fix the motor gear box 10. In actual application, the motor gear box 10 can be placed on the crimping head 72, and the abutment block 712 is abutted against the end of the motor gear box 10 away from the output shaft 101, so that sufficient pressure can be applied to the end of the motor gear box 10 through the abutment part. The pressing tool is more convenient and quick to use.

[0045] In some preferred embodiments, the outer diameter of the crimping head 72 increases gradually from the end away from the connecting rod 71 to the end close to the connecting rod 71 to reduce the contact area between the crimping head 72 and the internal gears of the motor gearbox 10, thereby preventing the gears inside the gearbox from sticking to the crimping head 72 and being pulled out.

[0046] Furthermore, the crimping assembly 7 also includes a pin 73 and a second elastic member 74, a third through hole 721 is provided on the crimping head 72, the connecting rod 71 is arranged in the third through hole 721, the connecting rod 71 is provided with a pin hole 722 connected to the third through hole 721, the connecting rod 71 is provided with a guide groove 711 extending along its axial direction, one end of the pin 73 is arranged in the pin hole 722, and the other end of the pin 73 is slidably arranged in the guide groove 711, a limiting protrusion is provided on the outer wall of the connecting rod 71, the second elastic member 74 is sleeved on the connecting rod 71, and one end of the second elastic member 74 abuts against the limiting protrusion, and the other end of the second elastic member 74 abuts against the crimping head 72.

[0047] As can be seen from the above description, the crimping joint 72 can slide along the axial direction of the connecting rod 71 under the guidance of the pin 73. During the pile installation process, the motor gear box 10 is sleeved on the crimping joint 72, and the spring contracts so that the abutment block 712 abuts against the end of the battery gear box; when the retaining ring 102 is pressed into place, the crimping assembly 7 is reset. During this process, under the action of the spring, the abutment block 712 first disengages from the end of the motor gear box 10, and then the crimping joint 72 disengages from the battery gear box. Because the contact surface between the crimping joint 72 and the internal gears of the motor gear box 10 is small, the crimping assembly 7 can prevent the gears in the motor gear box 10 from sticking to the crimping assembly 7 and being brought out.

[0048] Furthermore, a guide protrusion 13 is provided on the positioning seat, and a guide groove 131 is provided on a side of the guide protrusion 13 close to the first through hole 11 .

[0049] As can be seen from the above description, during the press-fitting process, the motor gearbox 10 slides along the guide groove 131 , which can further ensure the concentricity of the output shaft 101 of the motor gearbox 10 and the center hole of the retaining ring 102 .

[0050] Furthermore, it includes a plurality of magnetic columns 8 , and the guide groove 131 is provided with a plurality of mounting holes 132 along its extension direction. The plurality of magnetic columns 8 are arranged in a one-to-one correspondence with the plurality of mounting holes 132 , and the magnetic columns 8 are arranged in the mounting holes 132 .

[0051] From the above description, it can be seen that during the press-fitting process, the magnetic column 8 can play a magnetic role on the motor gear box 10, ensuring that the motor gear box 10 is close to the inner wall of the guide groove 131, thereby ensuring the concentricity of the output shaft 101 of the motor gear box 10 and the center hole of the retaining ring 102.

[0052] Example 1

[0053] Please refer to Figures 1 to 4 , Embodiment 1 of the present invention is: providing a press-fitting tool, including a slider 1 and a positioning column 2, the slider 1 is provided with a first through hole 11, one end of the positioning column 2 is slidably provided in the first through hole 11, the inner wall of the first through hole 11 and the end of one end of the positioning column form a positioning groove 3, and the positioning column 2 is provided with a positioning hole 21.

[0054] In this embodiment, the positioning groove 3 cooperates with the positioning hole 21 to ensure that the center points of the output shaft 101 of the motor gearbox 10 and the center hole of the retaining ring 102 are in the same axial direction, thereby ensuring the positioning accuracy and press-fitting quality of the retaining ring 102 during the press-fitting process.

[0055] In this embodiment, the shape of the first through hole 11 can be set to correspond to the outer contour of the retaining ring 102, and the positioning hole 21 can be set to correspond to the output shaft 101; wherein, the positioning column 2 can support the retaining ring 102, and the end of the positioning column 2 is set in the first through hole 11, and there is a certain height difference between the end face of the positioning column 2 and the upper surface of the slider 1, so that the end face of the positioning column 2 and the inner wall of the first through hole 11 can be enclosed to form a positioning groove 3. During the press-fitting process, the output shaft 101 of the motor gear box 10 passes through the center hole of the retaining ring 102 and penetrates into the positioning hole 21, and the end face of the motor gear box 10 close to one end of the output shaft 101 can conflict with the upper surface of the slider 1, so that the slider 1 slides relative to the positioning column 2 during the press-fitting process, so that the retaining ring 102 can be pressed into place.

[0056] In this embodiment, a limit block 22 is provided on the positioning column 2. When the retaining ring 102 is press-fitted into place, the limit block 22 contacts the lower surface of the slider 1 to ensure the consistency of the motor gearbox 10 after press-fitting.

[0057] Please refer to Figure 1 and Figure 2The press-fitting tool also includes a base 4, a first elastic member 5, a guide rod 6 and a sliding bearing 9. The guide rod 6 is provided on the base 4. The slider 1 is provided with a second through hole 12. The second through hole 12 is provided with a Haidong bearing. The guide rod 6 passes through the second through hole 12, and the sliding bearing 9 is sleeved on the guide rod 6. The first elastic member 5 is sleeved on the guide rod 6, and one end of the first elastic member 5 abuts against the base 4, and the other end of the first elastic member 5 abuts against the slider 1. During the press-fitting process, the end of the main body of the motor gearbox 10 can abut against the slider 1 and drive the slider 1 to move toward the base 4. During this process, the elastic member can play a buffering role on the slider 1, reducing the rigid impact force of the motor gearbox 10 during the press-fitting process. In addition, after the press-fitting process is completed, the slider 1 can automatically reset under the action of the first elastic member 5. The press-fitting tool is convenient and quick to use.

[0058] The press-fitting tool further includes a press-fitting assembly 7 disposed above the positioning hole 21 . The press-fitting assembly 7 is used to connect to an external press machine and apply pressure to the motor gearbox 10 .

[0059] The gears of the motor gear box 10 are coated with lubricating grease, which is easy to stick to the crimping assembly 7 during the press-fitting process, causing the gears of the gear box to be pulled out and causing gear disorder. In order to solve this problem, this embodiment improves the structure of the crimping assembly 7, please refer to Figure 3 and Figure 4 The crimping assembly 7 includes a connecting rod 71, a crimping head 72 connected to the connecting rod 71, a pin 73 and a second elastic member 74. The connecting rod 71 is provided with an abutment block 712, and the crimping head 72 is provided with a third through hole 721. The connecting rod 71 is arranged in the third through hole 721, and the connecting rod 71 is provided with a pin hole 722 connected to the third through hole 721. The connecting rod 71 is provided with a guide groove 711 extending along its axial direction. One end of the pin 73 is arranged in the pin hole 722, and the other end of the pin 73 is slidably arranged in the guide groove 711. The second elastic member 74 is sleeved on the connecting rod 71, and one end of the second elastic member 74 abuts against the abutment block 712, and the other end of the second elastic member 74 abuts against the crimping head 72. Specifically, the outer diameter of the crimping head 72 increases from the end away from the connecting rod 71 to the end close to the connecting rod 71 to reduce the contact area between the crimping assembly 7 and the internal gears of the motor gear box 10, thereby preventing the gears of the gear box from sticking to the crimping assembly 7 and being pulled out.

[0060] In this embodiment, to further improve the concentricity between the output shaft 101 and the center hole of the retaining ring 102, a guide protrusion 13 is further provided on the slider 1. A guide groove 131 is provided on one side of the guide protrusion 13 near the first through hole 11. The guide groove 131 has a plurality of mounting holes 132 along its extension direction. Magnetic posts 8 are provided in the mounting holes 132. The magnetic posts 8 are used to magnetically attract the outer wall of the motor gearbox 10 so that the outer wall of the motor gearbox 10 can be closely attached to the groove wall of the guide groove 131.

[0061] To sum up, the pressing tool has the characteristics of simple structure, small size and low production cost. It can be applied to the pressing process of the retaining ring 102 of various models of motor gearboxes 10. The tool can ensure the pressing quality of the gearbox retaining ring 102 and the consistency of the pressed products.

[0062] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A press-fitting tool, characterized in that: It includes a slider and a positioning column, the slider is provided with a first through hole, one end of the positioning column is slidably arranged in the first through hole, the inner wall of the first through hole and the end of one end of the positioning column form a positioning groove, and the positioning column is provided with a positioning hole.

2. The press-fitting tool according to claim 1, characterized in that: It also includes a base and a first elastic member, one end of the first elastic member abuts against the base, and the other end of the first elastic member abuts against the slider.

3. The press-fitting tool according to claim 2, characterized in that: It also includes a guide rod, which is arranged on the base. The first elastic member is sleeved on the guide rod. The slider is provided with a second through hole, and the guide rod passes through the second through hole.

4. The press-fitting tool according to claim 3, characterized in that: It also includes a sliding bearing, which is arranged in the second through hole and is sleeved on the guide rod.

5. The press-fitting tool according to claim 1, characterized in that: A limiting block is provided on the positioning column.

6. The press-fitting tool according to claim 1, characterized in that: It also includes a crimping assembly, which is arranged above the positioning hole.

7. The press-fitting tool according to claim 6, characterized in that: The crimping assembly comprises a connecting rod and a crimping head connected to the connecting rod, and an abutment block is provided on the connecting rod.

8. The press-fitting tool according to claim 7, characterized in that: The crimping assembly also includes a pin and a second elastic member, a third through hole is provided on the crimping head, the connecting rod is arranged in the third through hole, a pin hole is provided on the connecting rod and is connected to the third through hole, and a guide groove extending along the axial direction thereof is provided on the connecting rod, one end of the pin is provided in the pin hole, and the other end of the pin is slidably provided in the guide groove, the second elastic member is sleeved on the connecting rod, and one end of the second elastic member abuts the abutting block, and the other end of the second elastic member abuts the crimping head.

9. The press-fitting tool according to claim 1, characterized in that: The sliding block is provided with a guide protrusion, and a guide groove is provided on a side of the guide protrusion close to the first through hole.

10. The press-fitting tool according to claim 9, characterized in that: It also includes a plurality of magnetic columns, the guide groove is provided with a plurality of mounting holes along its extension direction, the plurality of magnetic columns are arranged in a one-to-one correspondence with the plurality of mounting holes, and the magnetic columns are arranged in the mounting holes.

Images