Motor shell end face clamping fixture

Abstract

The utility model relates to a motor shell end face clamping fixture, and belongs to the field of motor component production and machining, the motor shell end face clamping fixture comprises a chuck seat, the chuck seat is provided with an abutting body and an abutting plate, the abutting body and the abutting plate abut against the two opposite end faces of a shell blank respectively, and the shell blank and the chuck seat are coaxial. The two end faces of the shell blank are oppositely connected in an abutting mode through the abutting body and the abutting plate so that the shell blank can be clamped and fixed, on the premise that the clamping and fixing function is guaranteed, the shell blank is not prone to stress deformation, and therefore the deformation amount of the shell blank during machining is reduced.

Description

Technical Field

[0001] The present application relates to the field of motor component production, and in particular to a motor housing end face clamping fixture. Background Art

[0002] The motor housing is a shell located outside the motor, which plays the role of containing, placing and protecting the rotor, stator, coil and other structures. The motor housing is a cylindrical shell with two end faces, an inner cavity and other structures.

[0003] Since the internal space is used to place and fit other components of the motor, the inner surface of the inner cavity has certain roundness requirements, and the inner wall of the motor housing needs to be turned during the production process. In the related technology, the motor housing is turned using a CNC machine tool, and the fixture used to clamp the housing blank in the CNC machine tool is a three-jaw chuck.

[0004] The clamping principle of the three-jaw chuck on the workpiece is that the multiple jaws of the chuck continuously apply radial abutment force to the workpiece, so that the shell blank and the chuck are relatively fixed; the shell blank body is a cylindrical workpiece, and the part affected by the jaws is the cylinder wall, and the thickness of the cylinder wall is relatively small. The abutment force applied by the jaws to the shell blank will cause the cylinder wall of the shell blank to deform, resulting in poor molding quality of the motor housing. Utility Model Content

[0005] In order to improve the above problems, the present application provides a motor housing end face clamping fixture.

[0006] The motor housing end face clamp provided in this application adopts the following technical solution:

[0007] A motor housing end face clamping fixture comprises a chuck seat, on which an abutment body and an abutment plate are provided. The abutment body and the abutment plate abut against two opposite end faces of a housing blank respectively. The housing blank is coaxial with the chuck seat.

[0008] By adopting the above technical scheme, the clamping force points of the abutment body and the abutment plate on the shell blank are located on the end face of the shell blank, and the force direction of the shell blank is the axial direction of the shell. Due to the cylindrical structure of the shell blank, its structural stability is higher when subjected to axial force and it is not easy to be deformed by force, thereby reducing the deformation of the shell blank during processing.

[0009] Preferably, the abutment plate is relatively fixed to the chuck seat, the abutment plate abuts against a side of the shell blank away from the chuck seat, the abutment body and the chuck slide relatively, and the sliding direction is the axial direction of the chuck seat.

[0010] By adopting the above technical solution, when the shell blank is placed next to the abutment plate, the abutment body moves toward the abutment plate, so as to abut against the side of the shell blank away from the abutment plate to clamp the shell blank.

[0011] Preferably, a side wall of the shell blank at one end close to the abutment plate is fixedly connected with an assembly wing, an assembly hole is formed on the assembly wing, and a positioning pin is provided on the abutment plate, and the positioning pin is inserted into the assembly hole.

[0012] By adopting the above technical solution, the positioning pin and the assembly hole cooperate with each other to improve the relative position accuracy of the shell blank and the abutment plate.

[0013] Preferably, the abutment plate comprises an outer end plate and a matching ring, the outer end plate is relatively fixed to the chuck seat, the matching ring is detachably mounted on the outer end plate, and a positioning hole for a positioning pin to pass through is provided on the matching ring.

[0014] Preferably, a mounting frame is provided on the chuck seat, the outer end plate is connected to an end of the mounting frame away from the chuck seat, and an operating opening is provided on a side surface of the mounting frame.

[0015] By adopting the above technical solution, the abutment plate that needs to be connected and fixed to the chuck seat can be located on the side of the shell blank away from the chuck seat to stably abut the shell blank. At the same time, the operating opening on the installation frame can provide an operating space for the operator to place the shell blank into the installation frame.

[0016] Preferably, a matching groove is formed on one side of the installation frame facing the abutment plate, a matching step is formed on the abutment body, the matching step is inserted into the matching groove, and the abutment body and the installation frame are connected by bolts.

[0017] By adopting the above technical solution, the relative position accuracy of the installation frame and the abutment plate is improved.

[0018] Preferably, a limiting groove is provided on the side wall of the abutment body, the length direction of the limiting groove is parallel to the sliding direction of the abutment body relative to the chuck seat, and a limiting pin is connected to the mounting frame, and the end of the limiting pin is located in the limiting groove.

[0019] By adopting the above technical solution, the abutment body, the chuck seat and the mounting frame rotate synchronously, and the cooperation of the limit pin and the limit groove improves the relative circumferential stability of the three during the rotation process.

[0020] Preferably, an elastic ring is embedded in the end of the abutment body, the elastic ring is coaxial with the chuck seat, and the elastic ring abuts against the end surface of the shell blank.

[0021] By adopting the above technical solution, the elastic ring directly contacts the shell blank, so as to improve the abutment stability between the abutment body and the shell blank.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. Through the arrangement of the abutment body and the abutment plate, the clamping force application point of the abutment body and the abutment plate on the shell blank is located at the end surface of the shell blank, and the force direction of the shell blank is the axial direction of the shell. Due to the cylindrical structure of the shell blank, the structural stability is high when the axial force is applied, and it is not easy to deform under force, thereby reducing the deformation of the shell blank during processing;

[0024] 2. Through the setting of the installation frame, the abutment plate that needs to be connected and fixed with the chuck seat can be located on the side of the shell blank away from the chuck seat to stably abut the shell blank. At the same time, the operating opening on the installation frame can provide an operating space for the operator to place the shell blank into the installation frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic cross-sectional view of the overall structure of the motor housing end face clamping fixture in the embodiment of the present application.

[0026] Figure 2 It is a schematic diagram of the overall structure of the motor housing end face clamping fixture used in the embodiment of the present application.

[0027] Figure 3 It is a schematic diagram of the structure of the abutment body in the embodiment of the present application.

[0028] Explanation of the accompanying drawings: 1. Chuck seat; 12. Shell blank; 13. Assembly wing; 131. Assembly hole; 2. Clamp mechanism; 21. Abutment body; 211. Limiting groove; 212. Elastic ring; 22. Mounting frame; 221. Matching groove; 222. Limiting pin; 223. Operating opening; 23. Abutment plate; 231. Outer end plate; 232. Matching ring; 2321. Positioning hole; 233. Matching step; 234. Positioning pin. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-3 This application is described in further detail.

[0030] The present application embodiment discloses a motor housing end surface clamping fixture, such as Figure 1 As shown, it includes a chuck seat 1 and a clamp mechanism 2, the chuck seat 1 is rotatably connected to the frame of a machine tool (not shown in the figure), and the clamp mechanism 2 is used to fix the shell blank 12 on the chuck seat 1. The shell blank 12 fixed on the chuck seat 1 is coaxial with the chuck seat 1.

[0031] like Figure 1 and 2As shown, the clamp mechanism 2 includes an abutment body 21, an abutment plate 23 and a mounting frame 22. The abutment body 21 is cylindrical and is coaxially slidably connected with the chuck seat 1, and the sliding direction is its axial direction. The mounting frame 22 is mounted on the chuck seat 1 by bolts, and the abutment plate 23 is mounted on the mounting frame 22. The mounting frame 22 makes the abutment plate 23 located on the side of the shell blank 12 away from the chuck seat 1. An operation opening 223 is opened on the side of the mounting frame 22, and the operation opening 223 can provide an operating space for the operator to put the shell blank 12 into the mounting frame 22. A through hole is provided at the center of the abutment plate 23 for the tool used for turning to pass through; a mating groove 221 is provided on the side of the mounting frame 22 facing the abutment plate 23, a mating step 233 is formed on the abutment body 21, the mating step 233 is inserted into the mating groove 221, and the abutment body 21 and the mounting frame 22 are connected by bolts; when the mating step 233 is inserted into the mating groove 221, the through hole on the abutment plate 23 is coaxial with the chuck seat 1.

[0032] like Figure 1 and 2 As shown, the abutment plate 23 includes an outer end plate 231 and a matching ring 232. The outer end plate 231 is connected to the mounting frame 22, and the through hole is located on the outer end plate 231. The matching ring 232 is detachably mounted on the side of the outer end plate 231 facing the chuck seat 1, and the matching ring 232 and the through hole are coaxial. The side wall of the housing blank 12 near one end of the abutment plate 23 is fixedly connected with a plurality of assembly wings 13, and the assembly wings 13 are provided with assembly holes 131, and the axes of the assembly holes 131 are parallel to the axis of the housing blank 12. The outer end plate 231 is provided with a plurality of positioning pins 234 on the side facing the shell blank 12. The length direction of the positioning pins 234 is parallel to the axial direction of the chuck seat 1. The matching ring 232 is provided with positioning holes 2321 for the positioning pins 234 to pass through. Each positioning pin 234 passes through the positioning hole 2321 and the assembly hole 131 at the same time. At this time, the shell blank 12 and the matching ring 232 are coaxial, and the shell blank 12 and the through hole in the middle of the abutment plate 23 are also coaxial. The surface roughness of the end face of the shell blank 12 is low, and the surface of the matching ring 232 is polished. When the end face of the shell blank 12 is abutted, the matching accuracy of the two is higher.

[0033] like Figure 1 , 2As shown in Figures 3 and 4, the end of the abutment body 21 away from the shell blank 12 is threadedly mounted on the piston of the pneumatic pull rod in the machine tool (not shown in the figure), so that it can move axially relative to the chuck seat 1. A limiting groove 211 is provided on the side wall of the abutment body 21, and the length direction of the limiting groove 211 is parallel to the sliding direction of the abutment body 21 relative to the chuck seat 1. A through hole is provided in the radial direction on the mounting frame 22, and a limiting pin 222 is installed through the through hole. The end of the limiting pin 222 facing the axis of the chuck seat 1 is located in the limiting groove 211. The abutment body 21, the chuck seat 1 and the mounting frame 22 rotate synchronously, and the cooperation of the limiting pin 222 and the limiting groove 211 improves the relative circumferential stability of the three during the rotation process. An elastic ring 212 is embedded in one end of the abutment body 21 facing the shell blank 12. The elastic ring 212 and the abutment body 21, the chuck seat 1 and the shell blank 12 are all coaxial. The elastic ring 212 abuts against the end surface of the shell blank 12, which is used to improve the abutment stability between the abutment body 21 and the shell blank 12.

[0034] The implementation principle of a motor housing end surface clamping fixture in the embodiment of the present application is:

[0035] The shell blank 12 is placed into the installation frame 22 through the operating opening 223. When each assembly hole 131 cooperates with each positioning pin 234, the end face of the shell blank 12 and the matching ring 232 are abutted. Then the abutment body 21 moves and abuts against the end of the shell blank 12 away from the abutment plate 23. At this time, the clamping mechanism 2 maintains a stable clamping state for the shell blank 12.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A motor housing end face clamping fixture, comprising a chuck seat (1), characterized in that: The chuck seat (1) is provided with an abutment body (21) and an abutment plate (23), the abutment body (21) and the abutment plate (23) respectively abut against two opposite end surfaces of the shell blank (12), and the shell blank (12) is coaxial with the chuck seat (1).

2. The motor housing end face clamp according to claim 1, characterized in that: The abutment plate (23) is relatively fixed to the chuck seat (1), the abutment plate (23) abuts against the side of the shell blank (12) away from the chuck seat (1), and the abutment body (21) and the chuck slide relatively, and the sliding direction is the axial direction of the chuck seat (1).

3. The motor housing end face clamp according to claim 2, characterized in that: A side wall of the shell blank (12) at one end close to the abutment plate (23) is fixedly connected with an assembly wing (13), an assembly hole (131) is provided on the assembly wing (13), and a positioning pin (234) is provided on the abutment plate (23), and the positioning pin (234) is inserted into the assembly hole (131).

4. The motor housing end face clamp according to claim 3, characterized in that: The abutment plate (23) comprises an outer end plate (231) and a matching ring (232); the outer end plate (231) is relatively fixed to the chuck seat (1); the matching ring (232) is detachably mounted on the outer end plate (231); and a positioning hole (2321) for a positioning pin (234) to pass through is provided on the matching ring (232).

5. The motor housing end face clamp according to claim 4, characterized in that: The chuck seat (1) is provided with a mounting frame (22), the outer end plate (231) is connected to one end of the mounting frame (22) away from the chuck seat (1), and an operating opening (223) is provided on a side surface of the mounting frame (22).

6. The motor housing end face clamp according to claim 5, characterized in that: A matching groove (221) is provided on one side of the mounting frame (22) facing the abutment plate (23); a matching step (233) is formed on the abutment body (21); the matching step (233) is inserted into the matching groove (221); and the abutment body (21) and the mounting frame (22) are connected by bolts.

7. The motor housing end face clamp according to claim 5, characterized in that: A limiting groove (211) is provided on the side wall of the abutment body (21), the length direction of the limiting groove (211) is parallel to the sliding direction of the abutment body (21) relative to the chuck seat (1), and a limiting pin (222) is connected to the installation frame (22), the end of the limiting pin (222) is located in the limiting groove (211).

8. A motor housing end face clamp according to any one of claims 1 to 4, characterized in that: An elastic ring (212) is embedded at the end of the abutment body (21); the elastic ring (212) and the chuck seat (1) are coaxial; the elastic ring (212) abuts against the end surface of the shell blank (12).

Images