Simulation and Prediction Method of Axial Ultrasonic Vibration Assisted Grinding Workpiece Surface Topography

Abstract

The invention relates to an axial ultrasonic vibration assisted grinding workpiece surface topography simulation prediction method. A grinding particle contour sampling point can be dynamically selected along with ultrasonic vibration. On the basis, a grinding groove widening model is built aiming at the characteristic of axial ultrasonic vibration, and a grinding elastic deformation model and a plasticity piling model are further introduced to correct a dynamic contour sampling method, so that the combination of geometrical simulation and physical simulation is realized; and a workpiece surface topography prediction model is finally generated, and a result pattern is output. A processing parameter can be optimally selected in advance according to a workpiece surface topography simulationprediction result, so that the grinding processing quality is improved. The defect that an existing simulation method cannot be used for simulating during axial ultrasonic vibration by adopting a static sampling method is overcome. The axial ultrasonic vibration assisted grinding workpiece surface topography simulation prediction method has a favorable practical value in the field of grinding processing.

Description

technical field [0001] The invention relates to a mechanical manufacturing and processing technology, in particular to a method for simulating and predicting the surface topography of a grinding workpiece assisted by axial ultrasonic vibration based on a dynamic contour sampling method. Background technique [0002] Ultrasonic vibration assisted grinding is a compound processing technology that combines ultrasonic vibration processing technology and ordinary grinding processing technology. A large number of research results show that axial ultrasonic vibration assisted grinding can obtain high-quality workpiece surface. In order to deeply analyze the effects of axial ultrasonic vibration and grinding parameters on the process of workpiece surface topography creation, it is necessary to predict the surface topography of workpieces assisted by axial ultrasonic vibration grinding. [0003] Usually, the topological matrix g of the workpiece is used in the prediction of the surf...

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Problems solved by technology

[0007] The present invention aims at the problem that the existing simulation method cannot perform simulation when there is axial ultrasonic vibration due to the static sampling method, and proposes a method for simulating and predicting the surface topography of the grinding workpiece assisted by axial ultrasonic vibration, which can follow the ultrasonic vibration to dynamically select sampling points of the wear particle profile

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