声频动力头回转马达径向自由运动的危害及对策研究
Study on the Hazard of Radial Free Movement of Acoustic Frequency Power Head Rotary Motor

针对声频动力头回转马达紧固螺栓出现松动、断裂等问题，分析螺栓松动、断裂的原因为径向配合度较松、马达存在较大径向自由运动空间所致。在高频振动工况下，径向配合度较松会加速螺栓的松动及断裂，为此研制了一种定位防松结构，限制马达与框架间的径向运动。经试验及工程化取样验证，解决了螺栓松动、蠕变断裂问题，达到预期效果。
In view of the problems of loosening and fracture of the fastening bolts of the acoustic power head rotary motor, the reasons for the loosening and fracture are loose radial coordination and large radial free movement space of the motor. Under high-frequency vibration conditions, the loose radial coordination will accelerate the loosening and fracture of the bolt, so a positioning and anti-loosening structure is developed to limit the radial motion between the motor and the frame. After the test and engineering sampling verification, the problems of bolt loosening and creep fracture are solved, and the expected effect is achieved.