阅读说明：本技术 电机定子铁心与机座的装配制造工艺 (Assembling and manufacturing process of motor stator core and base ) 是由 杨晶 张赓 曹飞林 赵振兴 赵耀 李斌 于 2020-07-10 设计创作，主要内容包括：本发明公开了一种电机定子铁心与机座的装配制造工艺,其涉及电机装配技术领域。旨在解决现有的装配形式无法把直径扩大后的定子铁心放入到原有机座号中的问题。其技术方案要点是先制造出定子铁心,然后在定子铁心的基础上焊接出完整的机座。本发明能够最大限度的提高定子铁心的外径,提高电机的功率密度,在相同机座的情况下,输出功率增大,而在相同输出功率的情况下,电机的体积又可以变小,重量变轻。(The invention discloses an assembly manufacturing process of a motor stator core and a motor base, and relates to the technical field of motor assembly. The problem that the stator core with the enlarged diameter cannot be placed into an original machine base number in the existing assembly mode is solved. The technical scheme is characterized in that a stator core is manufactured firstly, and then a complete machine base is welded on the basis of the stator core. The invention can improve the outer diameter of the stator core to the maximum extent, improve the power density of the motor, increase the output power under the condition of the same engine base, and reduce the volume and the weight of the motor under the condition of the same output power.)

1. The assembly manufacturing process of the motor stator core and the motor base is characterized in that: the method comprises the following steps:

s100, placing a stator core laminating tool on a platform, and then sleeving a base annular rib plate on the stator core laminating tool and contacting with the platform, wherein the inner circular surface of the base annular rib plate is a matching surface;

s200, with the annular rib plate of the base as the bottom, sleeving the stator punching sheet on a stator core laminating tool, and laminating the stator punching sheet to a required height by matching with a groove sample rod;

s300, placing another base annular rib plate at the top end of the laminated stator punching, uniformly distributing a plurality of ribs on the outer circle of the stator punching along the circumferential direction, welding the stator punching with each rib, and then welding the ribs with the base annular rib plate to form a stator core;

s400, separating the stator core from the stator core laminating tool, and then turning the stator core to a horizontal state;

s500, the stator core is kept in a horizontal state, other parts on the base are welded, and the whole base is welded from inside to outside until the stator core and the base are integrated.

2. The assembly manufacturing process of a stator core and a base of an electric machine according to claim 1, characterized in that: steps S100, S200 and S300 are all completed on a press machine, so as to ensure the lamination coefficient of the stator core.

3. The assembly manufacturing process of a stator core and a base of an electric machine according to claim 1, characterized in that: further comprising the steps of:

and S410, mounting the stator coil on the stator iron core.

4. The assembly manufacturing process of a stator core and a base of an electric machine according to claim 1, characterized in that: in step S500, the interior of the machine base needs to be cleaned after welding is completed, and then painted.

5. The assembly manufacturing process of a stator core and a base of an electric machine according to claim 1, characterized in that: further comprising the steps of:

s600, carrying out integral vibration stress relief treatment on the stator core and the base which are welded into a whole.

6. The assembly manufacturing process of a stator core and a base of an electric machine according to claim 1, characterized in that: in step S300, two ends of the rib respectively penetrate through the upper and lower annular rib plates of the machine base.

7. The assembly manufacturing process of a stator core and a base of an electric machine according to claim 1, characterized in that: in step S300, the rib is sandwiched between two base ring rib plates, and the end portion thereof is in contact with the end faces of the base ring rib plates.

8. The assembly manufacturing process of a stator core and a base of an electric machine according to claim 1, characterized in that: the stator punching sheet is a full circle sheet or a fan-shaped sheet.

9. The assembly manufacturing process of a stator core and a base of an electric machine according to claim 1, characterized in that: the whole shape of the machine base is a square box shape or a cylinder shape.

10. The assembly manufacturing process of a stator core and a base of an electric machine according to claim 1, characterized in that: the stator core laminating tool comprises a bottom plate which is as high as a machine seat ring rib plate, and a positioning cylinder is coaxially arranged on the bottom plate.

Technical Field

The invention relates to the technical field of motor assembly, in particular to an assembly manufacturing process of a motor stator core and a motor base.

Background

With the continuous progress of motor technology and the continuous expansion of the motor application field, a motor with high efficiency, light weight and high power density is widely favored by customers, so that motor manufacturing enterprises can continuously expand the outer diameter of a stator core on the basis of the original machine base number, thereby improving the bearing capacity of a magnetic field and increasing the output power of the motor.

In the manufacturing process of the motor, the most common form of embedding the stator core into the base is a press-in type, that is, the stator core is manufactured into one part, the base is another part, and the stator core is placed into the base from one end of the base through a spigot matched with the end cover and clamped tightly by a crane. The press-in type assembling form ensures that the stator core can reach the matching surface of the stator core at least through the spigot matched with the base and the end cover, and the stator core as a part needs the rib as fastening, so the press-in type limits the outer diameter of the stator core and hinders the improvement of the motor power.

Referring to fig. 1, taking a motor with a center height of 450 (in mm) as an example, when the outer diameter of the stator lamination is 780, the diameter of the maximum part of the stator core is 851, and if the outer diameter of the stator lamination is increased to 820, the diameter of the maximum part of the stator core is increased to 891, the spigot 855, where the base fits the end cover, is increased to 895, and 895/2=447.5, and the center height is 450-447.5=2.5, which cannot be achieved.

Therefore, in the press-in type assembly mode, the stand is limited by the center height, and cannot be increased correspondingly with the increase of the outer diameter of the stator core, so that the power density of the motor cannot be improved by enlarging the outer diameter of the stator core.

In order to reduce the assembly difficulty of stator laminations, the lamination of the stator laminations is carried out in a machine base, a semi-finished product of a stator core is firstly prepared, and then a finished product of the stator core is prepared.

However, in the above lamination process, the outer circle of the stator lamination is tightly attached to the inner wall of the base, so that the outer diameter of the stator lamination cannot be changed under the condition that the size of the base is not changed, and the power density of the motor cannot be improved by expanding the outer diameter of the stator core.

Disclosure of Invention

The invention aims to provide an assembly manufacturing process of a stator core and a base of a motor, which can improve the outer diameter of the stator core to the maximum extent and improve the power density of the motor.

In order to achieve the purpose, the invention provides the following technical scheme:

an assembly manufacturing process of a motor stator core and a motor base comprises the following steps:

s100, placing a stator core laminating tool on a platform, and then sleeving a base annular rib plate on the stator core laminating tool and contacting with the platform, wherein the inner circular surface of the base annular rib plate is a matching surface;

s200, with the annular rib plate of the base as the bottom, sleeving the stator punching sheet on a stator core laminating tool, and laminating the stator punching sheet to a required height by matching with a groove sample rod;

s300, placing another base annular rib plate at the top end of the laminated stator punching, uniformly distributing a plurality of ribs on the outer circle of the stator punching along the circumferential direction, welding the stator punching with each rib, and then welding the ribs with the base annular rib plate to form a stator core;

s400, separating the stator core from the stator core laminating tool, and then turning the stator core to a horizontal state;

s500, the stator core is kept in a horizontal state, other parts on the base are welded, and the whole base is welded from inside to outside until the stator core and the base are integrated.

Further, steps S100, S200 and S300 are all completed on a press machine, so as to ensure the lamination coefficient of the stator core.

Further, the method also comprises the following steps:

and S410, mounting the stator coil on the stator iron core.

Further, in step S500, after the welding inside the machine base is completed, cleaning is performed, and then painting is performed.

Further, the method also comprises the following steps:

s600, carrying out integral vibration stress relief treatment on the stator core and the base which are welded into a whole.

Further, in step S300, two ends of the rib respectively penetrate through the upper and lower annular rib plates of the machine base.

Further, in step S300, the rib is sandwiched between two base ring rib plates, and the end portion of the rib contacts with the end surface of the base ring rib plate.

Further, the stator punching sheet is a full circle sheet or a fan-shaped sheet.

Further, the overall shape of the machine base is a square box shape or a cylinder shape.

Further, the stator core laminating tool comprises a bottom plate which is as high as the machine seat ring rib plate, and a positioning cylinder is coaxially arranged on the bottom plate.

In conclusion, the invention has the following beneficial effects:

1. by adopting the assembly manufacturing process, the outer diameter of the stator core can be greatly improved, so that the power density of the motor is improved, the output power is increased under the condition of the same base, and the volume and the weight of the motor can be reduced under the condition of the same output power;

2. in the existing motor assembly process, two ends of a stator punching sheet are pressed tightly through a stator pressing ring, and then the stator pressing ring is welded and fixed with a ring rib plate in a base;

3. in the existing motor assembly process, the size of the spigot of the end plate of the motor base is also limited by the size of the stator core, but by adopting the assembly and manufacturing process disclosed by the invention, the size of the spigot of the end plate of the motor base is not limited, so that the size of the spigot of the end plate of the motor base can be reduced to improve the structural strength and rigidity of the motor base and improve the overall performance of the motor.

Drawings

FIG. 1 is a schematic diagram of a prior art electric machine;

FIG. 2 is a schematic view of step S100 in example 1;

FIG. 3 is a schematic view of step S200 in example 1;

FIG. 4 is a schematic view of step S300 in example 1;

FIG. 5 is a schematic view of step S400 in example 1;

FIG. 6 is a schematic view of step S500 in example 1;

FIG. 7 is a diagram showing step S510 in example 2;

fig. 8 is a schematic view of step S410 in embodiment 3.

In the figure: 1. a stator core laminating tool; 2. a machine base annular rib plate; 21. a mating surface; 3. stator punching sheets; 4. a rib; 5. a machine base; 6. and a stator coil.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.