Dynamic simulation test method for small power compressor motor stator iron core verticality

Abstract

The invention discloses a dynamic simulation test method for small power compressor motor stator iron core verticality. The method comprises steps: a) a forming stator is locked on a mounting plane of a cylinder seat at 15 to 22N.m before the test, the central aperture of the stator iron core is set to be Dmm, and the rotor diameter is 0.8 to 1.0mm smaller than the aperture; b) the test is carried out on a special simulation tester, four clamping claws are opened, a to-be-tested stator is sleeved on a simulation rotor, the bottom end surface of the stator iron core touches the horizontal top surface of a mold seat, the central aperture of the stator iron core is also Dmm, and the diameter of the simulation rotor is 0.3 to 0.4mm smaller than the aperture; c) the clamping claws are closed, and the stator iron core top end surface is touched; d) a hydraulic adjustable tension mechanism is opened, a piston, a tension connection rod and a pulling plate are pushed to move downwardly until the clamping claws uniformly apply a 15 to 22N.m pre-tightening force on the stator iron core when the piston moves for 15 to 23mm; and e) the simulation rotor is rotated to test the dynamic air gap between the to-be-tested stator and the simulation rotor. The method of the invention realizes the test is carried out when the stator is pre-tightened and the simulation rotor tries to rotate, and the work efficiency is high.

Description

【Technical field】 [0001] The invention relates to a test method for the verticality of the stator iron core of a motor, in particular to a dynamic simulation test method for the verticality of the stator core of a small-power compressor motor. 【Background technique】 [0002] The motor is a high-speed rotating part that converts electrical energy into mechanical energy. It includes a stator and a rotatable rotor. The existing stator core is usually made of multiple pieces of silicon steel sheets riveted into a whole body. Before the torque is locked to the installation plane of the compressor cylinder block, the verticality test process is still required. The vertical accuracy of the stator core can effectively improve the overall performance and pass rate of the motor. [0003] If the stator that has not passed the verticality test is directly installed on the cylinder block of the compressor, there may be a problem of deviation of the concentricity of the stator center hole...

AI Technical Summary

Problems solved by technology

[0003] If the stator that has not passed the verticality test is directly installed on the cylinder block of the compressor, there may be a problem of deviation of the concentricity of the stator center hole, which will cause the rotor to generate rotation resistance. When the allowable deviation range is exceeded, the stator center hole wall and The outer wall of the rotor will generate frictional noise, which will inevitably directly affect the working performance of the stator, and ultimately affect the performance of the motor. Therefore, before the formed stator is delivered for installation, a practical method for testing the verticality of the formed stator is required.

[0004] At present, there is only a static test method for the verticality of the formed stator core. It needs tools such as feeler gauges to detect the gap between the static stator core and the static dummy shaft. The dynamic simulation test method for the verticality of the stator core of the small-power compressor motor is carried out under the background of this case.

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