Motor rotor magnetizing anti-warping sample preparation tool

Abstract

A motor rotor magnetizing anti-warping sample preparation tool comprises an upper pressing jig and a lower supporting jig, the lower supporting jig comprises a bottom plate, and the upper side of the bottom plate is connected with a lower rubber mat through an elastic assembly. The elastic assembly comprises a guide plate arranged on the upper side of the bottom plate, at least two guide holes are evenly distributed in the guide plate in the circumferential direction, a guide column is arranged in any guide hole in a penetrating mode, the upper end of the guide column is connected with a gasket, the lower rubber mat is arranged on the upper side of the gasket, and the portion, between the gasket and the guide plate, of the guide column is sleeved with a spring. According to the utility model, the structure is simple, the actual operation is convenient and fast, in the magnetizing process, the upper end face of the iron core bears the pressure of the upper pressing jig, and the lower end face bears the supporting force of the lower supporting jig and the spring assembly, thereby supporting the two end faces of the rotor, ensuring that the rotor does not warp in the magnetizing process and after magnetizing, improving the magnetizing qualified rate of the rotor to be more than 99%, and reducing the production cost. And the productivity and economic loss caused by product scrapping due to sample preparation in actual production is reduced.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to motors, and especially to a sample preparation tooling for preventing warping during the magnetization of a motor rotor. Background Art

[0002] When a flat wire motor is working, it needs to generate a strong magnetic field to drive its operation. Magnetizing the motor rotor can generate a strong magnetic force, which is the basis for the normal operation of the motor. The strong magnetic force can improve the torque and speed of the motor, and thus achieve higher power output and energy efficiency ratio. However, the rotor core is usually made of stacked silicon steel sheets, and the silicon steel sheets have the characteristics of low magnetic permeability ferro-silicon alloys, such as high magnetic permeability and low magnetic loss. However, in the prior art, the silicon steel sheets may be affected by factors such as thermal shock and residual stress during the magnetization process, resulting in easy warping during the magnetization process, leading to a large number of product scraps and seriously reducing the production capacity. Summary of the Invention

[0003] The purpose of the utility model is to provide a sample preparation tooling for preventing warping during the magnetization of a motor rotor, and the sample preparation tooling for preventing warping during the magnetization of a motor rotor is to solve the technical problem that the rotor in the prior art is prone to warping during the magnetization process.

[0004] A sample preparation tooling for preventing warping during the magnetization of a motor rotor of the utility model includes an upper pressing fixture and a lower supporting fixture. The upper pressing fixture is arranged above the lower supporting fixture. The upper pressing fixture includes an upper pressing head, and an upper rubber pad is arranged on the lower side of the upper pressing head. The lower supporting fixture includes a bottom plate, and a lower rubber pad is connected to the upper side of the bottom plate through an elastic component.

[0005] Further, the elastic component includes a guiding plate arranged on the upper side of the bottom plate. At least two guiding holes are evenly distributed in the guiding plate along the circumferential direction. A guiding column is respectively arranged in any one of the guiding holes. The guiding column and the guiding plate form a sliding pair parallel to the axial direction of the guiding hole. A through hole is arranged in the bottom plate below any one of the guiding holes. The lower ends of the guiding columns respectively extend into the through holes and are connected with a limiting block. The upper ends of the guiding columns are connected with a washer. The lower rubber pad is arranged on the upper side of the washer. A spring is sleeved on the guiding column between the washer and the guiding plate, and the spring biases the washer upward.

[0006] Further, the size of the limiting block is larger than the size of the guiding hole.

[0007] Further, the washer is internally provided with a threaded structure, the number of washers is more than two, and the washers are connected through the threaded structure and screws.

[0008] Further, a steel ring is arranged on the lower side of the washer.

[0009] Further, both the upper rubber pad and the lower rubber pad are urethane rubber pads.

[0010] Compared with the prior art, the effects of the present utility model are positive and obvious. The structure of the present utility model is simple, and the actual operation is convenient and fast. During the magnetization process, the upper end face of the iron core is subjected to the pressure of the upper pressing fixture, and the lower end face is subjected to the supporting force of the lower supporting fixture and the spring assembly, so as to support both end faces of the rotor, ensuring that it does not warp during and after the magnetization process, improving the magnetization qualification rate of the rotor to more than 99%, and reducing the production capacity and economic losses caused by product scrapping due to sample preparation in actual production. Brief Description of the Drawings

[0011] Figure 1 It is a schematic diagram of the upper pressing fixture in a warping-preventing sample-making tooling for magnetizing an electric motor rotor according to the present utility model.

[0012] Figure 2 It is a schematic diagram of the upper pressing head in a warping-preventing sample-making tooling for magnetizing an electric motor rotor according to the present utility model.

[0013] Figure 3 It is a schematic diagram of the upper rubber pad in a warping-preventing sample-making tooling for magnetizing an electric motor rotor according to the present utility model.

[0014] Figure 4 It is a three-dimensional schematic diagram of the lower supporting fixture in a warping-preventing sample-making tooling for magnetizing an electric motor rotor according to the present utility model.

[0015] Figure 5 It is a sectional schematic diagram of the lower supporting fixture in a warping-preventing sample-making tooling for magnetizing an electric motor rotor according to the present utility model.

[0016] Figure 6 It is a schematic diagram of the bottom plate in a warping-preventing sample-making tooling for magnetizing an electric motor rotor according to the present utility model.

[0017] Figure 7 It is a schematic diagram of the guide plate in a warping-preventing sample-making tooling for magnetizing an electric motor rotor according to the present utility model.

[0018] Figure 8 It is a schematic diagram of the guide post in a warping-preventing sample-making tooling for magnetizing an electric motor rotor according to the present utility model.

[0019] Figure 9 It is a schematic diagram of the washer in a warping-preventing sample-making tooling for magnetizing an electric motor rotor according to the present utility model.

[0020] Figure 10 It is a schematic diagram of the steel ring in a warping-preventing sample-making tooling for magnetizing an electric motor rotor according to the present utility model.

[0021] Figure 11 It is a schematic diagram of the lower rubber pad in a warping-preventing sample-making tooling for magnetizing an electric motor rotor according to the present utility model.

[0022] Figure 12 Schematic diagram of the magnetization working environment of a magnetization anti-warping sample preparation tooling for a motor rotor of the present utility model.

[0023] Figure 13 Cross-sectional schematic diagram of the magnetization working environment of a magnetization anti-warping sample preparation tooling for a motor rotor of the present utility model. Specific embodiments

[0024] The present utility model will be further described below in conjunction with embodiments. However, the present utility model is not limited to these embodiments. Any similar structures and their similar changes of the present utility model should be included in the protection scope of the present utility model. The use of directions such as up, down, front, back, left, and right in the present utility model is only for convenient and clear description, and does not limit the technical solutions of the present utility model.

[0025] As Figures 1-13 shown, a magnetization anti-warping sample preparation tooling for a motor rotor of the present utility model includes an upper pressing fixture 1 and a lower supporting fixture 2. The upper pressing fixture 1 is arranged above the lower supporting fixture 2. The upper pressing fixture 1 includes an upper pressing head 3, and an upper rubber pad 4 is arranged on the lower side of the upper pressing head 3. The lower supporting fixture 2 includes a bottom plate 5, and a lower rubber pad 12 is connected to the upper side of the bottom plate 5 through an elastic component.

[0026] Further, the elastic component includes a guide plate 6 arranged on the upper side of the bottom plate 5. At least two guide holes 7 are evenly distributed in the guide plate 6 along the circumferential direction. A guide post 8 is respectively inserted into any one of the guide holes 7. The guide post 8 and the guide plate 6 form a sliding pair parallel to the axial direction of the guide hole 7. A through hole 9 is arranged in the bottom plate 5 below any one of the guide holes 7. The lower end of the guide post 8 respectively extends into the through hole 9 and is connected with a limit block 10. The upper end of the guide post 8 is connected with a washer 11. The lower rubber pad 12 is arranged on the upper side of the washer 11. A spring 13 is sleeved on the guide post 8 between the washer 11 and the guide plate 6, and the spring 13 biases the washer 11 upward.

[0027] Further, the size of the limit block is larger than the size of the guide hole.

[0028] Further, the washer 11 is internally provided with a threaded structure. The number of washers 11 is more than two, and the washers 11 are connected through a threaded structure and screws. The number of washers 11 can be increased or decreased to adjust the height when the rotor is in the magnetization position, so as to facilitate the contact between the lower end surface of the rotor and the lower supporting fixture.

[0029] Further, a steel ring 14 is arranged on the lower side of the washer 11.

[0030] Further, both the upper rubber pad 4 and the lower rubber pad 12 are urethane rubber pads.

[0031] Specifically, the gluing pads 4, lower gluing pads 12, limit blocks 10, urethane rubber pads, etc. in this embodiment all adopt well-known solutions in the prior art, which are already understood by those skilled in the art and will not be elaborated here.

[0032] Specifically, the guide posts 8 can prevent the springs 13 from moving laterally and fix their lateral positions. The limit blocks 10 are larger than the guide holes 7 to provide a limiting effect on the guide posts 8 in the upward direction. The outer diameters of the contact surfaces of the upper pressing fixture 1 and the lower supporting fixture 2 with the rotor are the same, ensuring that the two end faces of the rotor core can be fully supported during the magnetization process. The urethane rubber pads can increase the friction force with the rotor contact surface.

[0033] The working process of this embodiment is as follows:

[0034] 1. After all components are installed, as Figure 12 and Figure 13 shown, install the whole set of tooling in the magnetization equipment;

[0035] 2. The rotor automatically rotates on the accompanying tray to the magnetization station;

[0036] 3. The equipment manipulator gripper automatically grabs the rotor into the magnetization equipment and places it in the magnetization coil;

[0037] 4. The servo mechanism at the bottom of the equipment moves the rotor to the exact center of the magnetization coil, and the servo mechanism at the top of the equipment drives the upper pressure head 3 to move downward synchronously and contact the rotor;

[0038] 5. At this time, the upper pressing fixture 1 and the lower supporting fixture 2 are respectively in contact with the upper end face and the lower end face of the rotor core, and then magnetization is carried out.

[0039] The structure of the utility model is simple, and the actual operation is convenient and fast. During the magnetization process, the upper end face of the iron core is subjected to the pressure of the upper pressing fixture 1, and the lower end face is subjected to the supporting force of the lower supporting fixture 2 and the spring assembly, so as to support the two end faces of the rotor, ensure that it does not warp during and after magnetization, improve the magnetization qualification rate of the rotor to more than 99%, and reduce the production capacity and economic losses caused by product scrapping due to sample preparation in actual production.

Claims

1. A sample preparation tool for preventing warping during magnetization of a motor rotor, characterized in that: It includes an upper pressing fixture and a lower supporting fixture. The upper pressing fixture is arranged above the lower supporting fixture. The upper pressing fixture includes an upper pressing head, and an upper rubber pad is arranged on the lower side of the upper pressing head. The lower supporting fixture includes a bottom plate, and a lower rubber pad is connected to the upper side of the bottom plate through an elastic component.

2. The sample preparation tooling for preventing warping during magnetization of an electric motor rotor according to claim 1, characterized in that: The elastic component includes a guide plate arranged on the upper side of the bottom plate. At least two guide holes are evenly distributed in the guide plate along the circumferential direction. A guide post is respectively disposed in any one of the guide holes. The guide post and the guide plate form a sliding pair parallel to the axial direction of the guide hole. A through hole is arranged in the bottom plate below any one of the guide holes. The lower end of the guide post respectively extends into the through hole and is connected with a limiting block. The upper end of the guide post is connected with a washer. The lower rubber pad is arranged on the upper side of the washer. A spring is sleeved on the guide post between the washer and the guide plate, and the spring biases the washer upward.

3. The sample preparation tooling for preventing warping during magnetization of a motor rotor according to claim 2, characterized in that: The size of the limiting block is larger than the size of the guide hole.

4. The sample preparation tooling for preventing warping during magnetization of a motor rotor according to claim 2, wherein: The washer is internally provided with a threaded structure. The number of washers is more than two, and the washers are connected by a threaded structure and screws.

5. A sample preparation tool for preventing warping during magnetization of an electric motor rotor according to claim 2, characterized in that: A steel ring is arranged on the lower side of the washer.

6. The sample preparation tooling for preventing warping during magnetization of a motor rotor according to claim 1, characterized in that: Both the upper rubber pad and the lower rubber pad are urethane rubber pads.

Images