A stator-rotor separation motor test fixture

Abstract

The invention discloses a stator-rotor separated motor testing fixture, comprising a motor body and a fixture body, wherein the motor body comprises a motor rotor and a motor stator, and the fixture body comprises a front rotating shaft, a rear rotating shaft, a front bearing, a rear bearing, a front flange, a rear flange, a locking nut and an outer shell, wherein the front rotating shaft is connected to the front end face of the motor rotor, the front bearing inner ring is connected to the front rotating shaft, the rear rotating shaft is connected to the rear end face of the motor rotor, the motor stator is located in the outer shell and the front flange is respectively connected to the motor stator and the outer shell, the motor rotor is located in the inner hole of the motor stator, the front bearing outer ring is connected to the bearing chamber of the front flange, the rear bearing outer ring is connected to the rear flange, the rear bearing inner ring is connected to the rear rotating shaft through the locking nut, and the rear flange is connected to the rear end of the outer shell; the invention ensures the concentricity of the motor rotor with the motor stator during the test, reduces the risk of the motor rotor and the motor stator being distorted due to eccentricity, and also improves the accuracy of the test data.

Description

Technical Field

[0001] The invention relates to the technical field of motor tooling, and in particular to a stator-rotor separated motor testing tooling. Background Art

[0002] During the R&D and manufacturing process of permanent magnet motors, the overall performance of the motor needs to be verified and analyzed to ensure that the motor meets the design requirements. The existing stator-rotor separation motor test fixture generally installs the stator and rotor together through an empty shell motor, and then drives the motor for testing. This makes it difficult to ensure uniform air gaps between the stator and rotor for motors with large unilateral magnetic pull, which also has a great impact on the motor test results. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a stator-rotor separated motor testing tool in view of the deficiencies of the above-mentioned prior art. The stator-rotor separated motor testing tool can realize the testing of the stator-rotor separated motor, ensure the concentricity of the motor rotor with the motor stator during the testing process, reduce the risk of the motor rotor and the motor stator being scraped due to the eccentricity of the motor rotor, ensure the uniformity of the air gap between the stator and the rotor, and improve the accuracy of the test data.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the present invention is:

[0005] A stator-rotor separated motor test fixture comprises a motor body and a fixture body, wherein the motor body comprises a motor rotor and a motor stator, and the fixture body comprises a front shaft, a rear shaft, a front bearing, a rear bearing, a front flange, a rear flange, a locking nut and an outer shell, wherein one end of the front shaft is connected to the front end face of the motor rotor, the inner ring of the front bearing is connected to the front shaft, and one end of the rear shaft is connected to the rear end face of the motor rotor, the motor stator is located inside the outer shell and the front flange is respectively connected to the front ends of the motor stator and the outer shell, the motor rotor is located in the inner hole of the motor stator and the other end of the front shaft extends out from the through hole in the middle of the front flange A bearing chamber is provided in the middle of the front flange, the front bearing on the front shaft is located in the bearing chamber of the front flange and the outer ring of the front bearing is connected to the bearing chamber of the front flange, a bearing chamber is provided in the middle of the rear flange, the rear bearing is located in the bearing chamber of the rear flange and the outer ring of the rear bearing is connected to the rear flange, the other end of the rear shaft extends out from the through hole in the middle of the rear flange and the rear bearing in the bearing chamber of the rear flange is sleeved on the rear shaft, the inner ring of the rear bearing is fitted with the shoulder of the rear shaft, the locking nut is threadedly connected to the rear shaft and the locking nut is used to lock the inner ring of the rear bearing on the shoulder of the rear shaft, and the rear flange is connected to the rear end of the outer shell.

[0006] As a further improved technical solution of the present invention, the inner ring of the front bearing is connected to the front shaft by interference fit.

[0007] As a further improved technical solution of the present invention, the outer ring of the rear bearing is connected to the bearing chamber of the rear flange through a bearing gland.

[0008] As a further improved technical solution of the present invention, a threaded connection surface is provided on the rear shaft, the locking nut is connected to the threaded connection surface of the rear shaft, the rear bearing is located between the locking nut and the shoulder of the rear shaft, and the inner ring of the rear bearing is connected to the rear shaft through the locking nut.

[0009] As a further improved technical solution of the present invention, the motor stator and the outer shell are clearance-matched.

[0010] As a further improved technical solution of the present invention, one end of the front rotating shaft is connected to the front end surface of the motor rotor by means of screws.

[0011] As a further improved technical solution of the present invention, one end of the rear shaft is connected to the rear end surface of the motor rotor by means of screws.

[0012] As a further improved technical solution of the present invention, the front flange is connected to the front end of the motor stator and the outer shell respectively by screws.

[0013] As a further improved technical solution of the present invention, a mounting hole for mounting an encoder is provided in the middle of one end surface of the rear rotating shaft.

[0014] The beneficial effects of the present invention are as follows: the front and rear ends of the motor rotor of the present invention are respectively connected to a rotating shaft (i.e., a front rotating shaft and a rear rotating shaft), and the entire motor body is supported by the front rotating shaft, the rear rotating shaft, the front bearing, the rear bearing, the front flange, the rear flange and the outer shell, thereby ensuring the concentricity of the motor rotor with the motor stator during the test, reducing the risk of the motor rotor and the motor stator being swept due to the eccentricity of the motor rotor, ensuring that the air gap between the stator and the rotor is uniform, and also improving the accuracy of the test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the present invention. DETAILED DESCRIPTION

[0016] According to the following Figure 1 The specific implementation modes of the present invention are further described as follows:

[0017] See also Figure 1A stator-rotor separated motor test fixture comprises a motor body and a fixture body, wherein the motor body comprises a motor rotor 1 and a motor stator 2, the fixture body comprises a front shaft 3, a rear shaft 4, a front bearing 5, a rear bearing 6, a front flange 10, a rear flange 7, a locking nut 9 and an outer shell 11, one end of the front shaft 3 is connected to the front end face of the motor rotor 1, the inner ring of the front bearing 5 is connected to the front shaft 3, one end of the rear shaft 4 is connected to the rear end face of the motor rotor 1, the motor stator 2 is located inside the outer shell 11 and the front flange 10 is respectively connected to the front ends of the motor stator 2 and the outer shell 11, the motor rotor 1 is located in the inner hole of the motor stator 2 and the other end of the front shaft 3 extends out from the through hole in the middle of the front flange 10, A bearing chamber is provided in the middle of the front flange 10, the front bearing 5 on the front shaft 3 is located in the bearing chamber of the front flange 10 and the outer ring of the front bearing 5 is connected to the bearing chamber of the front flange 10, a bearing chamber is provided in the middle of the rear flange 7, the rear bearing 6 is located in the bearing chamber of the rear flange 7 and the outer ring of the rear bearing 6 is connected to the rear flange 7, the other end of the rear shaft 4 extends out from the through hole in the middle of the rear flange 7 and the rear bearing 6 in the bearing chamber of the rear flange 7 is sleeved on the rear shaft 4, the inner ring of the rear bearing 6 is fitted with the shoulder 12 of the rear shaft 4, the locking nut 9 is threadedly connected to the rear shaft 4 and the locking nut 9 is used to lock the inner ring of the rear bearing 6 on the shoulder 12 of the rear shaft 4, and the rear flange 7 is connected to the rear end of the outer shell 11.

[0018] The motor body in this embodiment is a stator-rotor separated motor to be tested.

[0019] In this embodiment, the inner ring of the front bearing 5 is connected to the front shaft 3 by interference fit.

[0020] In this embodiment, the outer ring of the rear bearing 6 is connected to the bearing chamber of the rear flange 7 through a bearing gland 8 .

[0021] In this embodiment, a threaded connection surface is provided on the rear shaft 4, the locking nut 9 is connected to the threaded connection surface of the rear shaft 4, the rear bearing 6 is located between the locking nut 9 and the shoulder 12 of the rear shaft 4, and the inner ring of the rear bearing 6 is locked by the locking nut 9.

[0022] In this embodiment, the motor stator 2 and the outer shell 11 are clearance-fitted.

[0023] In this embodiment, one end of the front shaft 3 is connected to the front end surface of the motor rotor 1 by means of screws.

[0024] In this embodiment, one end of the rear shaft 4 is connected to the rear end surface of the motor rotor 1 by means of screws.

[0025] In this embodiment, the front flange 10 is connected to the front ends of the motor stator 2 and the outer shell 11 respectively by screws.

[0026] In this embodiment, a mounting hole 13 for connecting with an encoder 14 is provided in the middle of the rear end surface of the rear shaft 4 .

[0027] The assembly process of the stator-rotor separation motor and the tooling body of this embodiment is as follows: fix the front bearing 5 on the front shaft 3, fix the front shaft 3 and the front end of the motor rotor 1 by screws, fix the rear shaft 4 and the rear end of the motor rotor 1 by screws, install the rear bearing 6 into the bearing chamber of the rear flange 7, and then fix it together with the bearing gland 8 and install it on the rear shaft 4, the rear shaft 4 extends from the inner hole of the rear bearing 6 in the bearing chamber of the rear flange 7 and the middle through hole of the rear flange 7, and is locked on the rear shaft 4 with a locking nut 9, so that the locking nut 9 fits tightly to the inner ring of the rear bearing 6. Fix the front flange 10 to the front end of the motor stator 2 by screws, cover the outer shell 11 on the outside of the motor stator 2 and fix the outer shell 11 and the front flange 10 by screws. After completion, put the assembled motor rotor part together into the motor stator 2, and then fix the rear flange 7 and the rear end of the motor housing by screws. The stator-rotor separation motor and the tooling body are assembled. After that, the whole machine performance of the stator-rotor separation motor is verified and analyzed. The tooling body of this embodiment can make the air gap between the motor stator 2 and the motor rotor 1 uniform, so that the performance test data has high accuracy.

[0028] The front and rear ends of the motor rotor 1 of this embodiment are respectively connected to a rotating shaft (i.e., the front rotating shaft 3 and the rear rotating shaft 4). The two rotating shafts are fixedly connected to ensure the concentricity of the motor rotor 1 with the motor stator 2 during the test, thereby reducing the risk of the motor rotor 1 and the motor stator 2 being eccentric and ensuring the uniformity of the air gap between the stator and the rotor, and improving the accuracy of the test data.

[0029] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A stator-rotor separation motor test fixture, characterized in that: The invention comprises a motor body and a tooling body, wherein the motor body comprises a motor rotor and a motor stator, and the tooling body comprises a front rotating shaft, a rear rotating shaft, a front bearing, a rear bearing, a front flange, a rear flange, a locking nut and an outer shell, wherein one end of the front rotating shaft is connected to the front end face of the motor rotor, the inner ring of the front bearing is connected to the front rotating shaft, and one end of the rear rotating shaft is connected to the rear end face of the motor rotor, the motor stator is located inside the outer shell and the front flange is respectively connected to the front end of the motor stator and the outer shell, the motor rotor is located in the inner hole of the motor stator and the other end of the front rotating shaft extends out from the through hole in the middle of the front flange, and the middle of the front flange A bearing chamber is provided in the middle of the rear flange, the front bearing on the front shaft is located in the bearing chamber of the front flange and the outer ring of the front bearing is connected to the bearing chamber of the front flange, a bearing chamber is provided in the middle of the rear flange, the rear bearing is located in the bearing chamber of the rear flange and the outer ring of the rear bearing is connected to the rear flange, the other end of the rear shaft extends out from the through hole in the middle of the rear flange and the rear bearing in the bearing chamber of the rear flange is sleeved on the rear shaft, the inner ring of the rear bearing is fitted with the shoulder of the rear shaft, the locking nut is threadedly connected to the rear shaft and the locking nut is used to lock the inner ring of the rear bearing on the shoulder of the rear shaft, and the rear flange is connected to the rear end of the outer shell; The inner ring of the front bearing is connected to the front shaft by interference fit; The outer ring of the rear bearing is connected to the bearing chamber of the rear flange through a bearing gland; The rear shaft is provided with a threaded connection surface, the locking nut is connected to the threaded connection surface of the rear shaft, the rear bearing is located between the locking nut and the shoulder of the rear shaft, and the inner ring of the rear bearing is connected to the rear shaft through the locking nut.

2. The stator-rotor separation motor test fixture according to claim 1, characterized in that: The motor stator is clearance-matched with the outer shell.

3. The stator-rotor separation motor test fixture according to claim 1, characterized in that: One end of the front rotating shaft is connected to the front end surface of the motor rotor through screws.

4. The stator-rotor separation motor test fixture according to claim 1, characterized in that: One end of the rear rotating shaft is connected to the rear end surface of the motor rotor through screws.

5. The stator-rotor separation motor test fixture according to claim 1, characterized in that: The front flange is connected to the front ends of the motor stator and the outer shell respectively through screws.

6. The stator-rotor separation motor test fixture according to claim 1, characterized in that: A mounting hole for mounting an encoder is provided in the middle of one end surface of the rear rotating shaft.

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