Tool for measuring magnetic flux of motor rotor

Abstract

A motor rotor magnetic flux measuring tool disclosed by the present invention comprises a magnetic pole tester, a magnetizer, a three-axis motion system and a clamping mechanism, a detection unit of the magnetic pole tester is connected with a motor rotor, the magnetizer is used for magnetizing the motor rotor, the clamping mechanism is used for clamping the motor rotor, and the three-axis motion system is used for detecting the magnetic flux of the motor rotor. And the clamping mechanism is connected with the three-axis movement system. The device is high in automation degree, simple and convenient to operate, high in efficiency and high in detection accuracy, saves labor and time, facilitates monitoring of daily finished product quality, can store various different types of stator magnetic flux curves, can accurately measure different stators, is simple in adopted equipment, is easy to purchase, and is suitable for popularization and application. According to the high-power motor rotor magnetizing device, the cost is reduced, automatic magnetizing is achieved, production accidents in the process of magnetizing the high-power motor rotor manually are avoided, a test program is researched and developed independently, and follow-up updating and function adding and maintaining are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of motor testing, and in particular to a motor rotor magnetic flux measuring tool. Background Art

[0002] In the production process of surface-mounted permanent magnet synchronous motors, it is necessary to test the magnetic field of the permanent magnets on the rotor after magnetization to ensure that the magnetic flux of the magnets reaches the standard value after magnetization, and to verify whether there is a polarity error caused by magnetization errors. The common test method is to use a handheld Gauss meter with a digital display to test the magnetic flux of the magnets after magnetization. The better ones will come with a PC test software to measure the magnetic flux change curve when the rotor rotates. The advantage of this test method is that the system is simple in structure and easy to operate. However, its disadvantage is also obvious, that is, it often takes a lot of time during the test process. To test the magnetic flux change when the rotor rotates, the rotor needs to be installed on a fixed station to ensure its uniform rotation. The PC software only displays the test curve on the computer screen, but cannot perform storage comparison or data analysis. In the actual production process, it is only suitable for simple spot checks. Summary of the invention

[0003] The purpose of the present invention is to provide a motor rotor flux measuring tool with simple operation and high detection accuracy to solve the problems raised in the above background technology.

[0004] The technical solution of the present invention is as follows:

[0005] A motor rotor magnetic flux measuring tool comprises a magnetic pole tester, a magnetizer, a three-axis motion system and a clamping mechanism, wherein the detection unit of the magnetic pole tester is connected to the motor rotor, the magnetizer is used to magnetize the motor rotor, the clamping mechanism is used to clamp the motor rotor, and the clamping mechanism is connected to the three-axis motion system.

[0006] In a further technical solution, the clamping mechanism includes two groups of symmetrically arranged clamping arms and clamping claws, the ends of the clamping arms are connected to racks, and a driving gear is provided between the two groups of racks.

[0007] In a further technical solution, the clamping surface of the clamping jaw is provided with a rubber cushion layer.

[0008] In a further technical solution, a controller is also included, and the controller is electrically connected to the magnetic pole tester and the three-axis motion system respectively.

[0009] In a further technical solution, a display screen is also included, and the display screen is electrically connected to the controller.

[0010] The beneficial effects of the present invention are:

[0011] The invention has a high degree of automation, eliminates the time-consuming process of manual magnetization and inspection, saves labor and time, is easy to operate, has high efficiency, and has high detection accuracy, and is convenient for monitoring the quality of daily finished products. It can store various types of stator flux curves and can accurately measure different stators. The equipment used is simple and easy to purchase, which reduces costs. The automatic magnetization avoids the occurrence of production accidents during the manual magnetization of high-power motor rotors. The independently developed test program is convenient for subsequent updates and function additions and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of a motor rotor magnetic flux measuring tool according to an embodiment of the present invention;

[0013] Figure 2 It is a structural schematic diagram of the clamping mechanism described in an embodiment of the present invention.

[0014] Description of reference numerals:

[0015] 10. Magnetic pole tester; 20. Magnetizer; 30. Three-axis motion system; 40. Clamping mechanism; 41. Clamping claw; 42. Clamping arm; 43. Rack; 44. Driving gear; 50. Controller; 60. Display screen; 70. Motor rotor. DETAILED DESCRIPTION

[0016] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0017] Example:

[0018] A motor rotor flux measuring tool, such as Figure 1 As shown, it includes a magnetic pole tester 10, a magnetizer 20, a three-axis motion system 30 and a clamping mechanism 40. The detection unit of the magnetic pole tester 10 is connected to the motor rotor 70. The magnetizer 20 is used to magnetize the motor rotor 70. The clamping mechanism 40 is used to clamp the motor rotor 70. The clamping mechanism 40 is connected to the three-axis motion system 30.

[0019] In another embodiment, if Figure 2 As shown, the clamping mechanism 40 includes two groups of symmetrically arranged clamping arms 42 and clamping claws 41 , the ends of the clamping arms 42 are connected to racks 43 , and a driving gear 44 is provided between the two groups of racks 43 .

[0020] In another embodiment, the clamping surface of the clamping jaw 41 is provided with a rubber cushion layer.

[0021] In another embodiment, a controller 50 is further included. The controller 50 is electrically connected to the magnetic pole tester 10 and the three-axis motion system 30 respectively.

[0022] In another embodiment, a display screen 60 is further included, and the display screen 60 is electrically connected to the controller 50 .

[0023] The motor rotor flux measuring tooling of the present embodiment has a high degree of automation, eliminates the time-consuming process of manual magnetization and inspection, saves labor and time, is easy to operate, highly efficient, and highly accurate in detection, and is convenient for monitoring the quality of daily finished products. It can store various types of stator flux curves and can accurately measure different stators. The equipment used is simple and easy to purchase, which reduces costs. Automatic magnetization avoids the occurrence of production accidents during manual magnetization of high-power motor rotors. The independently developed test program is convenient for subsequent upgrades and function additions and maintenance.

[0024] The above-mentioned embodiments only express the specific implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A motor rotor magnetic flux measuring tool, characterized in that: It includes a magnetic pole tester, a magnetizer, a three-axis motion system and a clamping mechanism. The detection unit of the magnetic pole tester is connected to the motor rotor. The magnetizer is used to magnetize the motor rotor. The clamping mechanism is used to clamp the motor rotor. The clamping mechanism is connected to the three-axis motion system.

2. The motor rotor magnetic flux measuring tool according to claim 1, characterized in that: The clamping mechanism comprises two groups of symmetrically arranged clamping arms and clamping claws, the ends of the clamping arms are connected to racks, and a driving gear is arranged between the two groups of racks.

3. The motor rotor magnetic flux measuring tool according to claim 2, characterized in that: The clamping surface of the clamping jaw is provided with a rubber cushion layer.

4. The motor rotor magnetic flux measuring tool according to claim 1, characterized in that: The device also comprises a controller which is electrically connected to the magnetic pole tester and the three-axis motion system respectively.

5. The motor rotor magnetic flux measuring tool according to claim 4, characterized in that: It also includes a display screen, which is electrically connected to the controller.

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