内螺纹低频振动冷挤压振动加工装置动力学仿真分析

Dynamic simulation for a vibration processing equipment of internal thread formed by cold extrusion based on low frequency vibration

基于Adams对自行设计的内螺纹低频振动冷挤压振动加工装置进行动力学仿真,并以振动杆角位移变化情况考察内螺纹低频振动冷挤压加工过程中挤压丝锥棱齿的角位移变化情况。建立该装置动力学仿真模型;基于单因素试验和正交试验方法获得该振动加工装置参数(包括振动板相对振动杆旋转中心高度、激振力和激振频率)对振动杆角位移变化幅度的影响规律。仿真分析表明:随着振动板相对振动杆旋转中心高度增大、激振力增大及激振频率增大,振动杆角位移变化幅度均呈增大趋势。激振力变化对振动杆角位移影响最显著,其次是激振频率,最后是振动板相对振动杆旋转中心高度。

Dynamic simulation was done for a vibration processing equipment of internal thread formed by cold extrusion based on low frequency vibration. The angular displacement of the vibration rod was used to study the angular displacement variation of the extrusion tap. Firstly, the dynamic simulation model of the vibration processing equipment was established. Secondly, through single factor tests and an orthogonal test, the effect law of three parameters on the angular displacement curve of the vibration rod was obtained. It was shown that： with increase in the height of the vibration plate relative to the rotation center of the vibration rod, the angular displacement amplitude of the vibration rod increases ; with increase in the exciting force or the exciting frequency, the angular displacement amplitude of the vibration rod increases; the most significant effect on the angular displacement amplitude of the vibration rod is the exciting force, the second one is the exciting frequency, the third one is the height of the vibration plate relative to the rotation center of the vibration rod.