A three-dimensional elliptical vibration-assisted cutting micro-texture morphology modeling method

Abstract

The invention discloses a three-dimensional elliptical vibration-assisted cutting micro-texture morphology modeling method, which establishes a workpiece coordinate system, a tool coordinate system and a local coordinate system for three-dimensional elliptical vibration-assisted cutting, and establishes the three-dimensional elliptical vibration-assisted cutting in the tool coordinate system and three-dimensional elliptical vibration-assisted cutting. In the local coordinate system, according to the processing parameters and elliptical vibration parameters, the arc curve equation of the tool tip and the three-dimensional elliptic vibration expression are established. In the workpiece coordinate system, the workpiece parameters and machine tool parameters are set. During the process of processing the surface S of the part , first calculate the tool point P on the surface S of the general turning part t trajectory, when obtaining the general turning tool position P t On the basis of the trajectory, apply the tool position point P t The upper three-dimensional elliptical vibration, calculate the tool position point P that applies the three-dimensional elliptical vibration on the tool position point 2 t2 , the tool moves along the tool position point P 2 t2 The trajectory sweeping intersects the surface S of the part, thereby generating a micro-textured topography on the surface S of the part. The invention can solve the problem of generating the surface topography of the three-dimensional elliptical vibration assisted cutting micro-groove.

Description

technical field [0001] The invention belongs to the field of numerical control machining, in particular to the field of micro-groove surface modeling caused by tool vibration in micro-texture cutting process assisted by three-dimensional ultrasonic elliptical vibration. Background technique [0002] With the rapid development of precision and ultra-precision machining technology, elliptical vibration cutting has been widely concerned because of its advantages of reducing cutting force, improving machining quality, suppressing workpiece burrs, and increasing tool life. In view of the higher and higher requirements for the processing quality of high-precision parts, scholars have designed a variety of elliptical vibration cutting methods and supporting vibration cutting devices to further improve the surface quality of elliptical vibration cutting. During the elliptical vibration cutting process, the vibratory cutting vibration of the tool produces a continuous overlapping ell...

AI Technical Summary

Problems solved by technology

At present, the research of scholars rarely involves the mathematical modeling and analysis of the surface of the workpiece, and the modeling and simulation before the actual vibration cutting experiment has an important reference and guiding significance for the whole experiment.

Images