Floating centering assembly for electric machines and reducers and method of use thereof
The floating centering assembly device achieves high-precision coaxial alignment of the motor and reducer, solves the problem of spline wear during assembly of the motor and reducer, and improves assembly efficiency and consistency.
Patent Information
- Application Number
- CN202011635132.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-12-31
- Publication Date
- 2025-10-14
- Estimated Expiration
- 2040-12-31
AI Technical Summary
In the drive system of new energy vehicles, the simple assembly of the motor and reducer leads to insufficient spline alignment accuracy, which damages the heat-treated layer on the surface of the spline teeth and causes wear. Existing technologies make it difficult to achieve high-precision coaxial alignment.
A floating centering assembly device is used, including a motor fixing device, a reducer fixing device and an auxiliary centering device. Through the cooperation of the contoured seat and the clamping claws, the motor and reducer are accurately positioned and aligned. The position of the reducer is adjusted by the floating cylinder to make it coincide with the central axis of the motor.
It achieves high-precision coaxial alignment of the motor and reducer, avoids damage caused by manual alignment, reduces labor intensity, and improves assembly efficiency and consistency.
Smart Images
Figure CN112589716B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of methods or devices dedicated to manufacturing, assembling, maintaining or repairing electric machines, in particular to a floating centering and assembling device for electric machines and reducers and a method of using the same. BACKGROUND
[0002] In the actual production process of the three-in-one of the new energy automobile driving system, many manufacturers simply and roughly assemble the electric machine and the reducer, so that the spline centering precision is not enough, and the inner and outer splines have relative motion friction during the operation of the vehicle, which easily causes damage to the heat treatment layer of the spline tooth surface, and finally the spline wears out and the electric machine or reducer needs to be replaced. SUMMARY
[0003] In order to overcome the defects of the prior art, an assembling device with high centering precision and protection of electric machines is provided, and the application discloses a floating centering and assembling device for electric machines and reducers and a method of using the same.
[0004] The application achieves the purpose of the application through the following technical solutions:
[0005] A floating centering and assembling device for electric machines and reducers, comprising a base, characterized in that: it further comprises an electric machine fixing device, a reducer fixing device and an auxiliary centering device,
[0006] The electric machine fixing device comprises an electric machine guide rail, an electric machine fixing frame, an electric machine profiling seat and an electric machine pressing claw, the electric machine guide rail is fixed on the top surface of the base, the electric machine fixing frame is slidably arranged on the electric machine guide rail through the bottom, the electric machine profiling seat and the electric machine pressing claw are both fixed on the same side of the electric machine fixing frame and are respectively arranged on the bottom and the top of the electric machine fixing frame, and the top surface of the electric machine profiling seat is a circular arc;
[0007] The reducer fixing device comprises a transverse reducer guide rail, a reducer fixing frame, a floating air cylinder, a reducer pressing claw, a longitudinal reducer guide rail and a reducer profiling seat, the transverse reducer guide rail is also fixed on the top surface of the base, the electric machine fixing frame and the transverse reducer guide rail are respectively arranged on the two sides of the top surface of the base, the track direction of the transverse reducer guide rail and the track direction of the electric machine guide rail are parallel to each other, the bottom of the reducer fixing frame is slidably arranged on the transverse reducer guide rail, the cylinder body of the floating air cylinder and the reducer pressing claw are both fixed on the reducer fixing frame, the piston rod of the floating air cylinder moves in the vertical direction, the reducer pressing claw is arranged directly above the floating air cylinder, the longitudinal reducer guide rail is fixed on the top end of the piston rod of the floating air cylinder, the track direction of the longitudinal reducer guide rail and the track direction of the transverse reducer guide rail are perpendicular to each other, the bottom of the reducer profiling seat is slidably arranged on the longitudinal reducer guide rail, and the top surface of the reducer profiling seat is a circular arc;
[0008] The auxiliary centering device comprises a centering base, a centering guide rail and a centering clamp, the centering base is also fixed on the top surface of the base, the centering base is arranged between the motor fixing frame and the reducer fixing frame, the rear end of the centering guide rail is rotatably arranged on the top of the centering base through a rotating shaft, and the centering clamp is slidably arranged on the centering guide rail.
[0009] The floating centering and assembling device for the motor and the reducer is characterized in that the reducer fixing device further comprises a reducer positioning pin fixed on the vertical surface of the reducer fixing frame.
[0010] The use method of the floating centering and assembling device for the motor and the reducer comprises fixing the end cover on the end surface of the motor, and is characterized in that the method further comprises the following steps:
[0011] ① fixing the motor: the bottom of the outer side surface of the motor is attached to the top surface of the motor profiling seat of the motor fixing device, the top part of the outer side surface of the motor is pressed down by the motor pressing claw from top to bottom, and one end surface of the motor is buckled, so that the motor is fixed on the motor profiling seat;
[0012] ② centering the motor: the position of the motor is adjusted by rotating the centering guide rail around the top of the centering base and sliding the centering clamp along the centering guide rail, so that the center axes of the centering clamp and the motor coincide;
[0013] ③ fixing the reducer: the bottom of the outer side surface of the reducer is attached to the top surface of the reducer profiling seat of the reducer fixing device, and the top part of the outer side surface of the reducer is pressed down by the reducer pressing claw, so that the reducer is fixed on the reducer profiling seat;
[0014] ④ centering the reducer: the center axes of the reducer and the centering clamp coincide by sliding the reducer profiling seat along the longitudinal reducer guide rail and lifting the longitudinal reducer guide rail by the floating air cylinder, and the position of the reducer is fixed by locking the floating air cylinder and the longitudinal reducer guide rail;
[0015] ⑤ assembling: the motor fixing frame is slid along the motor guide rail, the reducer fixing frame is slid along the transverse reducer guide rail, the motor and the reducer are respectively sleeved into the centering clamp from the two sides of the centering clamp, and then the reducer and the motor are embedded and connected into one body with the center axes coinciding with each other.
[0016] The use method of the floating centering and assembling device for the motor and the reducer is characterized in that when the step ③, after the bottom of the outer side surface of the reducer is attached to the top surface of the reducer profiling seat of the reducer fixing device, the reducer positioning pin is respectively inserted into the positioning hole of the end surface of the reducer.
[0017] The present invention first fixes the motor as a reference position through a motor fixing device, and then adjusts the auxiliary centering device to make the positions of the motor and the auxiliary centering device consistent, and then adjusts the position of the reducer through a floating cylinder, so that the reducer and the auxiliary centering device are directly centered and the floating cylinder is locked, so that the reducer is locked in a spatial position with the auxiliary centering device as a reference, so that the motor and the reducer are indirectly centered through the auxiliary centering device as an intermediary. The accuracy of the centering coaxiality depends on the centering assembly accuracy of the motor and the motor profiling seat, and the reducer and the reducer profiling seat. Since the motor and the motor profiling seat, the reducer and the reducer profiling seat are all matched with inner and outer cylindrical surfaces, it is easier to achieve higher assembly accuracy. The present invention effectively solves the problem of coaxial centering of the motor and the reducer in production, so that the assembly of the motor and the reducer can be easily completed.
[0018] The present invention has the following beneficial effects:
[0019] 1. This invention avoids problems such as poor centering accuracy, bearing damage due to forced assembly, and spline wear caused by manual centering during actual production when assembling the motor and reducer;
[0020] 2. This invention eliminates the need for pre-designed positioning structures on the motor or reducer. High-precision alignment can be achieved directly with auxiliary alignment tooling. This is particularly effective in compensating for the lack of pre-designed positioning structures during the assembly of motors and reducers on the production line.
[0021] 3. The present invention has a simple structure, can greatly reduce the labor intensity during assembly, has high efficiency and good consistency. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Fig. 1 It is the front view of the present invention,
[0023] Fig. 2 It is a left view of the present invention,
[0024] Fig. 3 It is a top view of the present invention. DETAILED DESCRIPTION
[0025] The present invention is further illustrated below by means of specific examples. Example
[0026] A floating centering assembly device for a motor and a reducer comprises a base 1, a motor fixing device 2, a reducer fixing device 3 and an auxiliary centering device 4. Figs. 1-3 As shown, the specific structure is:
[0027] The motor fixing device 2 comprises a motor guide rail 21, a motor fixing frame 22, a motor profiling seat 23 and a motor pressing claw 24. The motor guide rail 21 is fixed on the top surface of the base 1. The motor fixing frame 22 is slidably arranged on the motor guide rail 21 through the bottom. The motor profiling seat 23 and the motor pressing claw 24 are both fixed on the same side of the motor fixing frame 22 and are respectively arranged on the bottom and the top of the motor fixing frame 22. The top surface of the motor profiling seat 23 is a circular arc.
[0028] The reducer fixing device 3 comprises a transverse reducer guide rail 31, a reducer fixing frame 32, a floating cylinder 33, a reducer pressing claw 34, a longitudinal reducer guide rail 35 and a reducer profiling seat 36. The transverse reducer guide rail 31 is also fixed on the top surface of the base 1. The motor fixing frame 22 and the transverse reducer guide rail 31 are respectively arranged on the two sides of the top surface of the base 1. The track direction of the transverse reducer guide rail 31 and the track direction of the motor guide rail 21 are parallel to each other. The bottom of the reducer fixing frame 32 is slidably arranged on the transverse reducer guide rail 31. The cylinder body of the floating cylinder 33 and the reducer pressing claw 34 are both fixed on the reducer fixing frame 32. The piston rod of the floating cylinder 33 moves in the vertical direction. The reducer pressing claw 34 is arranged directly above the floating cylinder 33. The longitudinal reducer guide rail 35 is fixed on the top end of the piston rod of the floating cylinder 33. The track direction of the longitudinal reducer guide rail 35 and the track direction of the transverse reducer guide rail 31 are perpendicular to each other. The bottom of the reducer profiling seat 36 is slidably arranged on the longitudinal reducer guide rail 35. The top surface of the reducer profiling seat 36 is a circular arc.
[0029] The auxiliary centering device 4 comprises a centering base 41, a centering guide rail 42 and a centering clamp 43. The centering base 41 is also fixed on the top surface of the base 1. The centering base 41 is arranged between the motor fixing frame 22 and the reducer fixing frame 32. The rear end of the centering guide rail 42 is rotatably arranged on the top of the centering base 41 through a rotating shaft. The centering clamp 43 is slidably arranged on the centering guide rail 42.
[0030] In the embodiment, the reducer fixing device 3 further comprises a reducer positioning pin 37. The reducer positioning pin 37 is fixed on the vertical surface of the reducer fixing frame 32.
[0031] When the embodiment is used, the following steps are sequentially implemented:
[0032] ① Fix the motor: fix the end cover 6 on the end surface of the motor 5, adhere the bottom of the outer side surface of the motor 5 to the top surface of the motor profiling seat 23 of the motor fixing device 2, press the top of the outer side surface of the motor 5 from top to bottom with the motor pressing claw 24 and buckle one end surface of the motor 5, so that the motor 5 is fixed on the motor profiling seat 23;
[0033] ② Centering the motor: Adjusting the position of the motor 5 by rotating the centering guide rail 42 around the top of the centering base 41 and sliding the centering clamp 43 along the centering guide rail 42, so that the center axes of the centering clamp 43 and the motor 5 coincide;
[0034] ③ Fixing the reducer: Adhering the bottom of the outer side of the reducer 7 to the top surface of the reducer profiling seat 36 of the reducer fixing device 3, inserting the reducer positioning pins 37 into the positioning holes in the end surface of the reducer 7, and pressing the top of the outer side of the reducer 7 from top to bottom with the reducer pressing claws 34, so as to fix the reducer 7 on the reducer profiling seat 36;
[0035] ④ Centering the reducer: Sliding the reducer profiling seat 36 along the longitudinal reducer guide rail 35 and lifting the longitudinal reducer guide rail 35 with the floating cylinder 33, so that the center axes of the reducer 7 and the centering clamp 43 coincide, and locking the floating cylinder 33 and the longitudinal reducer guide rail 35 to fix the position of the reducer 7;
[0036] ⑤ Assembling: Sliding the motor fixing frame 22 along the motor guide rail 21 and sliding the reducer fixing frame 32 along the transverse reducer guide rail 31, so as to make the motor 5 and the reducer 7 fit into the centering clamp 43 from both sides of the centering clamp 43, and then embed and connect the reducer 7 and the motor 5 into one body with their center axes coinciding with each other.
Claims
1. A floating centering assembly device for a motor and a reducer, comprising a base (1), characterized in that: It also includes a motor fixing device (2), a reducer fixing device (3) and an auxiliary centering device (4), The motor fixing device (2) comprises a motor guide rail (21), a motor fixing frame (22), a motor profiling seat (23) and a motor pressing claw (24); the motor guide rail (21) is fixed on the top surface of the base (1); the motor fixing frame (22) is slidably arranged on the motor guide rail (21) through the bottom; the motor profiling seat (23) and the motor pressing claw (24) are both fixed on the same side of the motor fixing frame (22) and are respectively arranged at the bottom and the top of the motor fixing frame (22); the top surface of the motor profiling seat (23) is an arc; The reducer fixing device (3) includes a transverse reducer guide rail (31), a reducer fixing frame (32), a floating cylinder (33), a reducer pressing claw (34), a longitudinal reducer guide rail (35) and a reducer profiling seat (36). The transverse reducer guide rail (31) is also fixed on the top surface of the base (1). The motor fixing frame (22) and the transverse reducer guide rail (31) are respectively arranged on both sides of the top surface of the base (1). The track direction of the transverse reducer guide rail (31) and the track direction of the motor guide rail (21) are parallel to each other. The bottom of the reducer fixing frame (32) is slidably arranged on the transverse reducer guide rail ( 31), the cylinder body of the floating cylinder (33) and the speed reducer pressing claw (34) are fixed on the speed reducer fixing frame (32), the piston rod of the floating cylinder (33) moves in the vertical direction, the speed reducer pressing claw (34) is located directly above the floating cylinder (33), the longitudinal speed reducer guide rail (35) is fixed to the top end of the piston rod of the floating cylinder (33), the track direction of the longitudinal speed reducer guide rail (35) and the track direction of the transverse speed reducer guide rail (31) are perpendicular to each other, the bottom of the speed reducer profiling seat (36) is slidably provided on the longitudinal speed reducer guide rail (35), and the top surface of the speed reducer profiling seat (36) is an arc; The auxiliary centering device (4) comprises a centering base (41), a centering guide rail (42) and a centering fixture (43). The centering base (41) is also fixed on the top surface of the base (1). The centering base (41) is arranged between the motor fixing frame (22) and the reducer fixing frame (32). The rear end of the centering guide rail (42) is rotatably arranged on the top of the centering base (41) through a rotating shaft. The centering fixture (43) is slidably arranged on the centering guide rail (42).
2. The floating centering assembly device for a motor and a reducer according to claim 1, characterized in that: The reducer fixing device (3) further comprises a reducer positioning pin (37), and the reducer positioning pin (37) is fixed on the vertical surface of the reducer fixing frame (32).
3. The method for using the floating centering assembly device for a motor and a reducer according to claim 1 or 2, comprising fixing the end cover (6) to the end face of the motor (5), wherein: The following steps are also included: ① Fixing the motor: Fit the bottom of the outer side surface of the motor (5) to the top surface of the motor profiling seat (23) of the motor fixing device (2), and use the motor pressing claw (24) to press the top of the outer side surface of the motor (5) from top to bottom and buckle one end surface of the motor (5) to fix the motor (5) on the motor profiling seat (23); ② Centering the motor: The position of the motor (5) is adjusted by rotating the centering guide rail (42) around the top of the centering base (41) and sliding the centering fixture (43) along the centering guide rail (42) so that the central axes of the centering fixture (43) and the motor (5) coincide with each other; ③ Fixing the reducer: Fit the bottom of the outer side surface of the reducer (7) to the top surface of the reducer profiling seat (36) of the reducer fixing device (3), and use the reducer pressing claw (34) to press the top of the outer side surface of the reducer (7) from top to bottom, thereby fixing the reducer (7) on the reducer profiling seat (36); ④ Centering the reducer: by sliding the reducer profiling seat (36) along the longitudinal reducer guide rail (35) and raising and lowering the longitudinal reducer guide rail (35) by the floating cylinder (33), the central axes of the reducer (7) and the centering fixture (43) are aligned, and the floating cylinder (33) and the longitudinal reducer guide rail (35) are locked to fix the position of the reducer (7); ⑤ Assembling: Slide the motor fixing frame (22) along the motor guide rail (21), and slide the reducer fixing frame (32) along the transverse reducer guide rail (31), so that the motor (5) and the reducer (7) are respectively inserted into the centering fixture (43) from both sides of the centering fixture (43), and then the reducer (7) and the motor (5) are embedded into one body under the condition that the central axes of the two coincide with each other.
4. The method for using the floating centering assembly device for a motor and a reducer according to claim 2, comprising fixing the end cover (6) to the end face of the motor (5), wherein: The following steps are also included: ① Fixing the motor: Fit the bottom of the outer side surface of the motor (5) to the top surface of the motor profiling seat (23) of the motor fixing device (2), and use the motor pressing claw (24) to press the top of the outer side surface of the motor (5) from top to bottom and buckle one end surface of the motor (5) to fix the motor (5) on the motor profiling seat (23); ② Centering the motor: The position of the motor (5) is adjusted by rotating the centering guide rail (42) around the top of the centering base (41) and sliding the centering fixture (43) along the centering guide rail (42) so that the central axes of the centering fixture (43) and the motor (5) coincide with each other; ③ Fixing the reducer: Fit the bottom of the outer side surface of the reducer (7) to the top surface of the reducer profiling seat (36) of the reducer fixing device (3), insert the reducer positioning pins (37) into the positioning holes on the end surface of the reducer (7), and use the reducer pressing claws (34) to press the top of the outer side surface of the reducer (7) from top to bottom, thereby fixing the reducer (7) on the reducer profiling seat (36); ④ Centering the reducer: by sliding the reducer profiling seat (36) along the longitudinal reducer guide rail (35) and raising and lowering the longitudinal reducer guide rail (35) by the floating cylinder (33), the central axes of the reducer (7) and the centering fixture (43) are aligned, and the floating cylinder (33) and the longitudinal reducer guide rail (35) are locked to fix the position of the reducer (7); ⑤ Assembling: Slide the motor fixing frame (22) along the motor guide rail (21), and slide the reducer fixing frame (32) along the transverse reducer guide rail (31), so that the motor (5) and the reducer (7) are respectively inserted into the centering fixture (43) from both sides of the centering fixture (43), and then the reducer (7) and the motor (5) are embedded into one body under the condition that the central axes of the two coincide with each other.
Citation Information
Patent Citations
Floating centering combined mounting device for motor and speed reducer
CN215433401U