A press-fitting tooling

Abstract

The present invention relates to a press-fitting tooling. The press-fitting tooling is used to press-fit a pulley onto a motor rotating shaft, and it includes: a supporting component, the supporting component includes a supporting platform, the supporting platform is used to carry the motor rear end cover, the supporting platform is provided with an upward protruding positioning table, and the positioning table can be inserted into the shaft hole of the motor rear end cover to constrain the motor; the supporting component further includes an elastic sliding mechanism, the elastic sliding mechanism is used to constrain the supporting platform, so that the supporting platform can only move in the vertical direction, and when the supporting platform bears a downward acting force, it provides an upward restoring force to the supporting platform; a top bearing member, during the process of the supporting platform moving vertically downward, the upper end of the top bearing member can extend out of the vertically arranged through hole of the positioning table and abut against the lower end of the motor rotating shaft. Using the press-fitting tooling to press-fit the pulley onto the motor rotating shaft can avoid the bad phenomenon of motor shaft swing.

Description

Technical Field

[0001] The present invention relates to a motor tooling, specifically to a press-fitting tooling for press-fitting a pulley onto a motor rotating shaft. Background Art

[0002] Press-fitting a pulley onto a motor rotating shaft is a post-process of the motor final assembly line, and this process has always been a bottleneck affecting the efficiency of the entire production line. There are two main problems: 1. When press-fitting the pulley, it is necessary to support the lower end of the motor shaft as the force application point, otherwise, the bearing will be damaged; 2. When press-fitting the pulley, due to the small force application point of the motor rotating shaft, it is difficult to make the pressure vertically downward, which easily leads to the bad phenomenon of the motor shaft swing. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide a press-fitting tooling that overcomes or at least partially solves the above problems.

[0004] The press-fitting tooling is used to press-fit a pulley onto a motor rotating shaft, and it includes:

[0005] A supporting assembly, the supporting assembly includes a supporting platform, the supporting platform is used to carry the motor rear end cover, the supporting platform is provided with an upward protruding positioning table, and the positioning table can be inserted into the shaft hole of the motor rear end cover to constrain the motor; the supporting assembly further includes an elastic sliding mechanism, and the elastic sliding mechanism is used to constrain the supporting platform so that the supporting platform can only move in the vertical direction and provide an upward restoring force to the supporting platform when the supporting platform bears a downward acting force;

[0006] A bearing member, during the process of the supporting platform moving vertically downward, the upper end of the bearing member can extend out of the vertically arranged through hole of the positioning table and abut against the lower end of the motor rotating shaft.

[0007] Optionally, the elastic sliding mechanism includes a sliding sleeve, a guide post, and an elastic member. The guide post is vertically arranged, the sliding sleeve is sleeved on the outer peripheral surface of the guide post, and both ends of the elastic member are respectively abutted against the guide post and the sliding sleeve. When the sliding sleeve moves vertically downward relative to the guide post, the elastic member provides an upward restoring force to the sliding sleeve;

[0008] The supporting platform is fixedly connected to the sliding sleeve.

[0009] Optionally, the sliding sleeve includes an upper cover part and a ring wall part formed by extending downward from the edge of the upper cover part, and the supporting platform is fixed on the upper cover part; during the process of the supporting platform moving vertically downward, the upper end of the bearing member can extend out of the vertically arranged through hole of the upper cover part.

[0010] Optionally, the elastic member is a spring, and it is sleeved on the bearing member.

[0011] Optionally, the press-fitting tooling further comprises:

[0012] A press-fitting table, which is used to cooperate with the supporting assembly and the top bearing member to press-fit the pulley onto the motor shaft under the pushing force of the downward acting force of the press-fitting table.

[0013] Optionally, a concave positioning hole is provided at the lower end of the press-fitting table, and at least the upper part of the pulley can extend into the positioning hole.

[0014] Optionally, the press-fitting tooling further comprises:

[0015] A limit sleeve, which is used to ensure the height tolerance of the press-fitting of the pulley, and its lower end can be pressed against the motor mirror surface or the motor front end cover; the pulley can extend into the positioning hole of the limit sleeve and abut against the top wall of the positioning hole of the limit sleeve;

[0016] A locking device, which is used to lock the position of the supporting platform when the upper end of the top bearing member abuts against the lower end of the motor shaft.

[0017] Optionally, the locking device includes an open ring, which is arranged on the outer periphery of the sliding sleeve, and the two ends of its opening extend outward to form a first force arm and a second force arm; the locking device further includes a power mechanism, which is used to make the first force arm and the second force arm approach each other so that the open ring tightly holds and locks the sliding sleeve.

[0018] Optionally, the locking device further includes a manual locking check mechanism, which is used to prevent the open ring from returning from the locked state to the unlocked state, and it includes a handle. When the handle rotates to the check position, one end of the handle tightly presses against the second force arm.

[0019] Optionally, the press-fitting tooling further comprises:

[0020] A press-fitting table, which is used to cooperate with the supporting assembly, the top bearing member, the limit sleeve and the locking device to press-fit the pulley onto the motor shaft under the pushing force of the downward acting force of the press-fitting table.

[0021] In the press-fitting tooling of the embodiment of the present invention, the supporting assembly can keep the motor moving vertically downward under the action of the downward acting force of the press-fitting table until the top bearing member abuts against the lower end of the motor shaft; during the process that the press-fitting table continues to press down the pulley to completely press-fit the pulley onto the motor shaft, the motor rear end cover and the supporting platform can provide constraints for the motor shaft, so that the acting force of the press-fitting table on the motor shaft can be kept vertically downward, thus avoiding the bad phenomenon of the motor shaft swinging. Description of the Drawings

[0022] The accompanying drawings included are used to provide a further understanding of the embodiments of the present application, which form a part of the specification, illustrate the implementation manners of the present application, and together with the written description, explain the principles of the present application. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0023] Figures 1 to 3 It is a schematic diagram of the press-fitting tooling provided in the first embodiment of the present invention for press-fitting a belt pulley onto a motor rotating shaft;

[0024] Figures 4 to 7 It is a schematic diagram of the press-fitting tooling provided in the second embodiment of the present invention for press-fitting a belt pulley onto a motor rotating shaft;

[0025] Figure 8 It is a top view of the press-fitting tooling provided in the second embodiment of the present invention.

[0026] Explanation of reference numerals: 1. Belt pulley; 2. Motor rotating shaft; 3. Top bearing member; 4. Support platform; 5. Positioning table; 6. Sliding sleeve; 7. Guide post; 8. Elastic member; 9. Upper cover portion; 10. Ring wall portion; 11. Press-fitting table; 12. Limiting sleeve; 13. Split ring; 14. First force arm; 15. Second force arm; 16. Power mechanism; 17. Handle; 18. Base. Detailed implementation manners

[0027] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention. Those of ordinary skill in the art can make various changes, modifications, substitutions, and variations to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

[0028] In the description of the present invention, the terms "center", "longitudinal", "transverse", "length", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. that are mentioned or may be mentioned indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. Additionally, the terms "comprise", "include" and any variation thereof are intended to cover non-exclusive inclusion.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "mounted" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] A press-fitting tooling according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0032] See Figure 1 , a press-fitting tooling according to Embodiment 1 of the present invention is used to press-fit a pulley 1 onto a motor shaft 2. The press-fitting tooling includes a supporting assembly and a top bearing member 3.

[0033] The supporting assembly includes a supporting platform 4. In this embodiment, the supporting platform 4 is generally in the shape of a circular plate and is horizontally arranged for carrying the rear end cover of the motor. The carrying platform is provided with an upwardly protruding positioning platform 5, and the positioning platform 5 can be inserted into the shaft hole of the rear end cover of the motor to constrain the motor, so that the motor can be fixed on the supporting platform 4. Preferably, the outer periphery of the positioning platform 5 is in a shape matching the shaft hole of the rear end cover of the motor.

[0034] The supporting assembly further includes an elastic sliding mechanism, which is used to constrain the supporting platform 4 so that the supporting platform 4 can only move in the vertical direction and provide an upward restoring force to the supporting platform 4 when the supporting platform 4 bears a downward acting force.

[0035] In this embodiment, the elastic sliding mechanism includes a sliding sleeve 6, a guide post 7, and an elastic member 8. The guide post 7 is vertically arranged, and the sliding sleeve 6 is sleeved on the outer peripheral surface of the guide post 7. Since the sliding sleeve 6 can only move up and down in the vertical direction under the constraint of the guide post 7, the supporting platform 4 fixedly connected to the sliding sleeve 6 can also only move up and down in the vertical direction, and thus the motor fixed on the supporting platform 4 can also only move up and down in the vertical direction.

[0036] Specifically, the sliding sleeve 6 includes an upper cover portion 9 and an annular wall portion 10 formed by downward extension of the edge of the upper cover portion 9, and the supporting platform 4 is fixed on the upper cover portion 9. During the process of the supporting platform 4 moving vertically downward, the upper end of the top bearing member 3 can sequentially extend out of the vertically arranged through hole of the upper cover portion 9 and the vertically arranged through hole of the positioning table 5, and abut against the lower end of the motor rotating shaft 2.

[0037] The elastic member 8 is arranged inside the sliding sleeve 6, and the two ends respectively abut against the upper end of the guide post 7 and the upper cover portion 9 of the sliding sleeve 6. When the sliding sleeve 6 moves vertically downward relative to the guide post 7, the elastic member 8 deforms and provides an upward restoring force to the sliding sleeve 6. Specifically, the elastic member 8 is a spring, at least the upper part of the top bearing member 3 is of a cylindrical structure, and the elastic member 8 is sleeved on the top bearing member 3. It should be understood that other suitable structures can also be adopted for the elastic sliding mechanism.

[0038] In this embodiment, the press-fitting tooling further includes a press-fitting table 11, and the press-fitting table 11 is used to cooperate with the supporting assembly and the top bearing member 3 to press-fit the pulley 1 onto the motor rotating shaft 2 under the push of the downward acting force of the press-fitting table 11. The downward acting force of the press-fitting table 11 can be directly or indirectly applied by an operator, or can be directly or indirectly applied by a press. Preferably, a concave positioning hole is provided at the lower end of the press-fitting table 11, and at least the upper part of the pulley 1 can extend into the positioning hole.

[0039] See Figures 1 to 3 , the operation process of pressing the pulley 1 onto the motor rotating shaft 2 by using the press-fitting tooling is as follows:

[0040] Step 1: Place the motor on the supporting platform 4, and sleeve the shaft hole of the rear end cover of the motor on the positioning table 5 for fixation.

[0041] Step 2: Sleeve the pulley 1 onto the upper end of the motor rotating shaft 2, use the press-fitting table 11 to press down the pulley 1 to provide a vertically downward acting force to the pulley 1. Under the acting force transmitted by the pulley 1, the motor rotating shaft 2 moves vertically downward, and drives the motor housing and the supporting platform 4 to move vertically downward against the restoring force of the elastic member 8. During this process, the upper end of the top bearing member 3 sequentially extends out of the vertically arranged through hole of the upper cover portion 9 and the vertically arranged through hole of the positioning table 5 until it abuts against the lower end of the motor rotating shaft 2, and the supporting platform 4 and the motor housing stop moving vertically downward.

[0042] Step 3: The press-fitting table 11 continues to press down the pulley 1 to completely press-fit the pulley 1 onto the motor rotating shaft 2, and the upper end face of the pulley 1 is flush with the upper end face of the motor shaft, and the press-fitting is completed.

[0043] In the press-fitting tooling of this embodiment, the supporting assembly can enable the motor to move vertically downward under the action of the downward force of the press-fitting table 11 until the top bearing member 3 abuts against the lower end of the motor rotating shaft 2; Step 3, during the process that the press-fitting table 11 continues to press down the pulley 1 to completely press-fit the pulley 1 onto the motor rotating shaft 2, the motor rear end cover and the supporting platform 4 can provide constraints to the motor rotating shaft 2, so that the force applied by the press-fitting table 11 to the motor rotating shaft 2 can be kept vertically downward, thereby avoiding the bad phenomenon of motor shaft swing.

[0044] Now refer to Figure 4 , a press-fitting tooling according to the second embodiment of the present invention, which is used to press-fit the pulley 1 onto the motor rotating shaft 2. The press-fitting tooling includes a supporting assembly and a top bearing member 3. In this embodiment, the structures of the supporting assembly and the top bearing member 3 are exactly the same as the corresponding supporting assembly and top bearing member 3 in the first embodiment, and will not be described in detail here.

[0045] In this embodiment, the press-fitting tooling further includes a limit sleeve 12, which is used to ensure the height tolerance of the press-fitting of the pulley 1. The limit sleeve 12 is provided with a positioning hole. When the pulley 1 is press-fitted, the pulley 1 can extend into the positioning hole of the limit sleeve 12 and abut against the top wall of the positioning hole of the limit sleeve 12, and the lower end of the limit sleeve 12 can abut against the motor mirror surface or the motor front end cover. Through the limit sleeve 12, the height tolerance of the press-fitting of the pulley 1 can be effectively ensured, and the requirement of ±0.2 mm can be achieved.

[0046] To ensure that the lower end of the limit sleeve 12 can abut against the motor mirror surface or the motor front end cover during the process of press-fitting the pulley 1 onto the motor rotating shaft 2, the press-fitting tooling further includes a locking device, and the locking device is used to lock the position of the supporting platform 4 when the upper end of the top bearing member 3 abuts against the lower end of the motor rotating shaft 2.

[0047] Specifically, as Figure 8 shown, the locking device includes an open loop 13, and the open loop 13 is arranged on the outer periphery of the sliding sleeve 6, and the two open ends thereof extend outward to form a first force arm 14 and a second force arm 15; the locking device further includes a power mechanism 16, such as a cylinder, and the power mechanism 16 is used to urge the first force arm 14 and the second force arm 15 to approach each other so that the open loop 13 tightly holds and locks the sliding sleeve 6, thereby locking the position of the supporting platform 4. When the power mechanism 16 withdraws the acting force on the first force arm 14 and the second force arm 15, the open loop 13 can rely on its own restoring force to return to the unlocked state, that is, the non-tightening state.

[0048] Preferably, the locking device further comprises a manual locking check mechanism, which is used to prevent the open ring 13 from returning to the unlocked state from the locked state, so as to further lock the position of the support platform 4. Specifically, the manual locking check mechanism comprises a handle 17, and when the handle 17 is rotated to the check position, one end of the handle 17 is directly or indirectly pressed against the second force arm 15. Since the first force arm 14 is fixed to the base 18 by a locking member such as a screw, pressing the second force arm 15 can make the open ring 13 tightly embrace and lock the sliding sleeve 6, thereby locking the position of the support platform 4. It should be understood that the locking device can also adopt other suitable structures.

[0049] In this embodiment, the press-fitting tool further includes a press-fitting table 11, which is used to cooperate with the support assembly, the top bearing 3, the limit sleeve 12, and the locking device to press-fit the pulley 1 onto the motor shaft 2 under the push of the downward force of the press-fitting table 11. The downward force of the press-fitting table 11 can be applied directly or indirectly by an operator, or directly or indirectly by a press machine.

[0050] See also Figures 4 to 7 The operation process of using the press-fitting tool to press the pulley 1 onto the motor shaft 2 is as follows:

[0051] Step 1: Place the motor on the supporting platform 4, and sleeve the shaft hole of the rear end cover of the motor onto the positioning platform 5 for fixing.

[0052] Step 2, insert the pulley 1 into the upper end of the motor shaft 2, use the press-fitting table 11 to press the pulley 1 downward, provide a vertical downward force on the pulley 1, and the motor shaft 2 moves vertically downward under the action of the force transmitted by the pulley 1, and overcomes the restoring force of the elastic member 8 to drive the motor housing and the supporting platform 4 to move vertically downward. During this process, the upper end of the top support member 3 extends out of the vertically arranged through hole of the upper cover part 9 and the vertically arranged through hole of the positioning platform 5 in turn, until it hits the lower end of the motor shaft 2, and the supporting platform 4 and the motor housing stop moving vertically downward.

[0053] Step 3, the power mechanism 16 works to make the open ring 13 tightly embrace and lock the sliding sleeve 6 to lock the position of the supporting platform 4; then the handle 17 is rotated to the non-return position to further lock the position of the supporting platform 4.

[0054] Step 4: Put the limiting sleeve 12 on the pulley 1, and press the limiting sleeve 12 downward with the press-fitting platform 11 until the lower end of the limiting sleeve 12 presses against the motor mirror or the front end cover of the motor, and the press-fitting is completed.

[0055] In the press-fitting tooling of this embodiment, the supporting component can enable the motor to move vertically downward under the action of the downward force of the press-fitting table 11 until the top bearing member 3 abuts against the lower end of the motor shaft 2; and in step 4, during the process of the press-fitting table 11 pressing down the limiting sleeve 12 to press-fit the pulley 1 onto the motor shaft 2, the rear end cover of the motor and the supporting platform 4 can provide constraints to the motor shaft 2, so that the force applied by the press-fitting table 11 to the motor shaft 2 can be kept vertically downward, thereby avoiding the bad phenomenon of the motor shaft swinging. The height tolerance of the pulley 1 is guaranteed by the limiting sleeve 12 and can meet the requirement of ±0.2 mm.

Claims

1. A press-fitting tooling for press-fitting a pulley onto a motor shaft, characterized in that, The press-fitting tooling includes: A support assembly, which includes a support platform for carrying the rear end cover of the motor. The support platform is provided with an upward protruding positioning table that can be inserted into the shaft hole of the rear end cover of the motor to restrain the motor. The support assembly further includes an elastic sliding mechanism for restraining the support platform so that the support platform can only move in the vertical direction and provide an upward restoring force to the support platform when the support platform bears a downward acting force. A top bearing member. During the process of the vertical downward movement of the support platform, the upper end of the top bearing member can extend out of the vertically arranged through hole of the positioning table and abut against the lower end of the motor shaft. A limit sleeve for ensuring the height tolerance of the pulley press-fitting. Its lower end can press against the motor mirror surface or the front end cover of the motor. The pulley can extend into the positioning hole of the limit sleeve and abut against the top wall of the positioning hole of the limit sleeve. A locking device for locking the position of the support platform when the upper end of the top bearing member abuts against the lower end of the motor shaft. The elastic sliding mechanism includes a sliding sleeve, a guide post, and an elastic member. The guide post is vertically arranged, the sliding sleeve is sleeved on the outer peripheral surface of the guide post, and the two ends of the elastic member are respectively abutted against the guide post and the sliding sleeve. When the sliding sleeve moves vertically downward relative to the guide post, the elastic member provides an upward restoring force to the sliding sleeve. The support platform is fixedly connected to the sliding sleeve. The locking device includes an open ring disposed on the outer periphery of the sliding sleeve, and the two ends of its opening extend outward to form a first force arm and a second force arm. The locking device further includes a power mechanism for urging the first force arm and the second force arm to approach each other so that the open ring tightly locks the sliding sleeve.

2. The press-fitting tooling according to claim 1, wherein: The sliding sleeve includes an upper cover part and a ring wall part extending downward from the edge of the upper cover part. The support platform is fixed on the upper cover part. During the process of the vertical downward movement of the support platform, the upper end of the top bearing member can extend out of the vertically arranged through hole of the upper cover part.

3. The press-fitting tooling according to claim 1, characterized in that: The elastic member is a spring sleeved on the top bearing member.

4. The press-fitting tooling according to claim 1, characterized in that: The locking device further includes a manual locking check mechanism for preventing the open ring from returning from the locked state to the unlocked state. It includes a handle. When the handle rotates to the check position, one end of the handle tightly presses against the second force arm.

5. The press-fitting tooling according to claim 1, characterized in that, It further includes: A press-fitting table for cooperating with the support assembly, the top bearing member, the limit sleeve, and the locking device to press-fit the pulley onto the motor shaft under the push of the downward acting force of the press-fitting table.

Images