振动试验螺杆螺纹磨损变形分析

目的目的振动试验是力学环境试验中的重要组成部分,在固定待试产品时,螺杆是连接振动台台面和产品固定夹具的关键受力部件,目的在于研究振动环境对螺杆螺纹磨损变形的影响。方法以螺杆的螺纹在使用过程中的形态变化为关注点,通过改变振动量级、螺杆紧固力矩及试验次数等途径,借助图像处理方法,分析了螺纹齿峰的变化规律。结果果通过控制相关变量,振动量级、试验次数等因素对螺纹的磨损程度影响较小,而紧固力矩对螺纹的磨损程度影响突出。结论在振动试验中,较大的紧固力矩可引起螺杆螺纹发生明显磨损及变形,是螺杆螺纹发生机械损伤的主要因素。

Analysis of the Wear and Deformation of the Screw Thread in Vibration Test

Objective Vibration test is an important part in mechanical environment test. And the screw is the key component in connection the products and the shaking table during the test. The objective of the paper is to investigate the influence of the vibration test on the wear and deformation of the screw.Method By changing the vibration level, tightening torque and the times of the test, the deformation of the screw thread is concerned, and the regular of the screw deformation is analyzed by the method of image procession.Results The results show that the vibration level and the times of the test have less impact on the screw wear and deformation, but the tightening torque has more.Conclusion In vibration test, the larger tightening torque is the major influence factors which result in the obvious wear and deformation of screw.