Tool for assembling motor

Abstract

The utility model relates to the field of tools, in particular to a tool for assembling a motor. The motor is provided with a casing, a stator assembly is coaxially arranged in the casing, and the stator assembly comprises a stator in interference fit with the inner wall of the casing and a terminal connected with the stator through a framework. The tool comprises an assembling base and a pressing head, the end, close to the pressing head, of the assembling base is provided with a press-fitting positioning face and is provided with a tool groove, and the end of the assembling base forms an annular table due to the arrangement of the tool groove. Wherein the tool groove is used for containing a stator assembly, and the stator assembly abuts against the press-fitting positioning face in the assembling action. The annular table is axially provided with a terminal seat corresponding to the terminal around the axis of the annular table, and the terminal seat provides an accommodating space for the terminal in the assembly station; and the press-fitting positioning surface is divided into discontinuous structures by the terminal seat.

Description

Technical Field

[0001] The utility model relates to the field of tooling, in particular to a tooling for assembling motors. Background Art

[0002] During motor assembly, the stator and housing are assembled using an interference fit. This interference fit causes deformation of the surfaces connecting the stator core and the frame. This deformation causes the terminal block and its terminals to be non-perpendicular, hindering subsequent assembly with the PCBA. Utility Model Content

[0003] The purpose of the utility model is to provide a tool for motor assembly to solve the technical problem in the prior art that the motor is deformed due to interference fit during assembly, which affects the subsequent assembly with the PCBA.

[0004] The technical solution of the utility model is: a tool for assembling a motor, wherein the motor has a housing, a stator assembly coaxially arranged in the housing, the stator assembly including a stator having an interference fit with the inner wall of the housing, and a terminal connected to the stator via a frame; the tool comprises an assembly base and a pressing head, wherein one end of the assembly base close to the pressing head is provided with a press-fitting positioning surface and a tool slot; wherein the tool slot is used to accommodate the stator assembly, and the stator assembly abuts against the press-fitting positioning surface during assembly;

[0005] The tooling groove is provided with a terminal seat axially around its own axis corresponding to the terminal, and the terminal seat provides a receiving space for the terminal in the assembly station; and the terminal seat divides the press-fitting positioning surface into a discontinuous structure.

[0006] Preferably, the terminal seat has a tangent plane extending away from the press-fit positioning surface, the tangent plane abuts against the terminal and limits the rotation angle of the terminal around the axis of the assembly base.

[0007] Preferably, the assembly base is connected to a casing guide mechanism, which includes a floating plate and a guide column; the plane of the floating plate is perpendicular to the axis of the assembly base, and the end face close to the pressure head is used to abut against the casing; the guide column passes through the floating plate and is fixed to the assembly base.

[0008] Preferably, the guide column outer sleeve is provided with a linear bearing, and the floating plate is lifted and lowered along the length direction of the guide column through the linear bearing.

[0009] Preferably, a step is provided in the middle of the floating plate toward the pressure head, and a slot is provided in the housing corresponding to the step. The slot cooperates with the housing to limit the rotation angle of the housing around the axis of the assembly base.

[0010] Compared with the prior art, the advantages of the present invention are:

[0011] In this application, a terminal seat is provided on the ring platform in the axial direction corresponding to the terminal. The terminal seat provides accommodation space for the terminal in the assembly station and has a width larger than the terminal. The opening of the terminal seat divides the press-fit positioning surface into a discontinuous structure. As a result, when the press-fit positioning surface is subjected to force, the terminal seat can provide space for the deformation of the ring platform, thereby reducing the radial deformation of the ring platform. Because the width of the terminal seat is larger than the width of the terminal, there is a margin, which further prevents the terminal from skewing during assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0013] Figure 1 This is an exploded view of the stator assembly of the present invention;

[0014] Figure 2 This is a structural diagram of a tooling for motor assembly according to the present utility model;

[0015] Figure 3 This is a structural diagram of the assembly base of the utility model;

[0016] Figure 4 This is a schematic diagram of the connection between the terminal and the terminal seat of the utility model;

[0017] Figure 5 This is a structural diagram of the floating plate described in the utility model;

[0018] Among them: 1. Casing, 2. Stator assembly, 21. Stator, 22. Skeleton, 23. Terminal, 3. Assembly base, 31. Tooling slot, 32. Press-fit positioning surface, 33. Ring platform, 34. Terminal seat, 35. Cutting plane, 4. Press head, 5. Casing guide mechanism, 51. Floating plate, 52. Guide column, 53. Step, 54. Slot. DETAILED DESCRIPTION

[0019] Before introducing this application, the application scenario of this application, that is, the structure of the motor to be assembled, is first described:

[0020] like Figure 1 Combined with Figure 2 As shown, the motor includes an external casing 1 , in which a stator assembly 2 is arranged. The stator assembly 2 includes a stator 21 interference-fitted with the inner wall of the casing 1 , and a terminal 23 connected to the stator 21 through a frame 22 .

[0021] The present application is used to interference fit the stator 21 with the inner wall of the housing 1, and the terminal 23 is not damaged during the assembly process.

[0022] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0023] like Figure 2 As shown, a tool for motor assembly includes an assembly base 3 and a pressing head 4. The housing 1 and the stator assembly 2 are mounted on the assembly base 3. The pressing head 4 is coaxially arranged with the assembly base 3 and moves toward the assembly base 3 under the drive of the servo press, pushing the housing 1 and the stator assembly 2 to abut against each other for assembly.

[0024] Specifically, such as Figure 3 and Figure 4 As shown, the end of the assembly base 3 near the ram 4 is provided with a press-fitting positioning surface 32 and a tooling slot 31. The arrangement of tooling slot 31 forms an annular step 33 at the end of the assembly base 3. In this case, the press-fitting positioning surface 32 serves as the end surface of the annular step 33 near the ram 4. The stator assembly 2 is accommodated in the tooling slot 31. When the housing 1 and stator 21 are interference-fitted, the end of the stator 21 facing away from the housing 1 abuts the press-fitting positioning surface 32.

[0025] Because the stator 21 and the housing 1 are interference fit, there is a large press-fitting force during the assembly process. This press-fitting force will cause radial deformation of the frame 22 and the ring platform 33 abutting against the frame 22, thereby causing the terminals 23 on the frame 22 to become skewed.

[0026] To this end, the present application provides a terminal seat 34 on the ring platform 33 in the axial direction corresponding to the terminal 23. The terminal seat 34 provides accommodation space for the terminal 23 in the assembly station and has a width larger than the terminal 23. The opening of the terminal seat 34 divides the press-fit positioning surface 32 into a discontinuous structure. As a result, when the press-fit positioning surface 32 is subjected to force, the terminal seat 34 can provide space for the deformation of the ring platform 33, thereby reducing the radial deformation of the ring platform 33. Because the width of the terminal seat 34 is larger than the width of the terminal 23, there is a margin, which prevents the terminal 23 from being skewed during assembly.

[0027] In detail, the terminal seat 34 has a cutting plane 35 extending away from the press-fit positioning surface 32, and the cutting plane 35 abuts against the tail end of the terminal 23, limiting the rotation angle of the terminal 23 around the axis of the assembly base 3, and further limiting the rotation angle of the stator assembly 2 around the axis of the assembly base 3.

[0028] The assembly of the housing 1 is achieved through the following structure:

[0029] like Figure 2 and Figure 5As shown, the assembly base 3 is connected to a housing guide mechanism 5, which comprises a floating plate 51 and a guide post 52. The floating plate 51 is located perpendicular to the axis of the assembly base 3. One end of the guide post 52 is fitted with a linear bearing and extends vertically through the floating plate 51. The other end is fixed to a base fixed at the bottom of the assembly base 3, allowing the floating plate 51 to rise and fall along the length of the guide post 52. The end of the housing 1 abuts against the floating plate 51, which provides guidance for the operation of the housing 1.

[0030] Specifically, such as Figure 5 As shown, a step 53 is provided in the middle of the floating plate 51 toward the pressure head 4. During assembly, the end of the housing 1 is sleeved onto the step 53. Furthermore, a slot 54 is provided on the step 53 corresponding to the housing 1. The slot 54 can cooperate with the structure on the housing 1 to limit the rotation angle of the housing 1 around the axis of the assembly base 3, thereby maintaining the preset rotation angle between the housing 1 and the stator assembly 2 during assembly.

[0031] This application is working:

[0032] 1. Place the stator assembly 2 into the tooling slot 31 , and ensure that the terminal 23 falls into the terminal seat 34 and the tail end abuts against the cutting plane 35 .

[0033] 2. After lifting the floating plate 51 , place the housing 1 on the step 53 of the floating plate 51 , and make the housing 1 fit in the slot 54 on the step 53 .

[0034] The servo press is started, so that the pressing head 4 contacts the top of the housing 1 and pushes the housing 1 to move along the length direction of the guide pillar 52 , thereby forming an interference fit with the stator 21 .

[0035] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they are not intended to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A tool for assembling a motor, the motor comprising a housing (1), a coaxially arranged stator assembly (2) in the housing (1), the stator assembly (2) comprising a stator (21) having an interference fit with an inner wall of the housing (1), and a terminal (23) connected to the stator (21) via a frame (22); characterized in that: The tooling comprises an assembly base (3) and a pressing head (4); an end of the assembly base (3) close to the pressing head (4) is provided with a pressing positioning surface (32) and a tooling groove (31); the setting of the tooling groove (31) enables the end of the assembly base (3) to form a ring platform (33); wherein the tooling groove (31) is used to accommodate the stator assembly (2); and the stator assembly (2) abuts against the pressing positioning surface (32) during the assembly action; The ring platform (33) is provided with a terminal seat (34) axially around its own axis corresponding to the terminal (23), and the terminal seat (34) provides a receiving space for the terminal (23) in the assembly station; and the terminal seat (34) divides the press-fitting positioning surface (32) into a discontinuous structure.

2. The tooling for motor assembly according to claim 1, characterized in that: The terminal seat (34) is provided with a tangent plane (35) extending away from the press-fit positioning surface (32), wherein the tangent plane (35) abuts against the terminal (23) and limits the rotation angle of the terminal (23) around the axis of the assembly base (3).

3. The tooling for motor assembly according to claim 2, characterized in that: The assembly base (3) is connected to a housing guide mechanism (5), and the housing guide mechanism (5) comprises a floating plate (51) and a guide column (52); the plane of the floating plate (51) is perpendicular to the axis of the assembly base (3), and the end surface close to the pressure head (4) is used to abut against the housing (1); the guide column (52) passes through the floating plate (51) and is fixed to the assembly base (3).

4. The tooling for motor assembly according to claim 3, characterized in that: The outer sleeve of the guide column (52) is provided with a linear bearing, and the floating plate (51) is lifted and lowered along the length direction of the guide column (52) through the linear bearing.

5. The tooling for motor assembly according to claim 3, characterized in that: A step (53) is provided in the middle of the floating plate (51) in the direction toward the pressure head (4), and a slot (54) is provided in the housing (1) corresponding to the step (53). The slot (54) cooperates with the housing (1) to limit the rotation angle of the housing (1) around the axis of the assembly base (3).

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