Three-dimensional ellipse vibration auxiliary cutting micro-texture morphology modeling method

Abstract

The present invention discloses a three-dimensional ellipse vibration auxiliary cutting micro-texture morphology modeling method. A workpiece coordinate system, a cutter coordinate system and a local coordinate system of three-dimensional ellipse vibration auxiliary cutting are established. In the cutter coordinate system and the local coordinate system of three-dimensional ellipse vibration auxiliary cutting, a cutter point arc curvilinear equation and a three-dimensional ellipse vibration expression are established according to the processing parameters and the ellipse vibration parameters. In the workpiece coordinate system, workpiece parameters and machine tool parameters are set. In the process of processing surfaces S of parts, the cutter location point Pt locus of the surface S of a general turning part is calculated, on the basis of obtaining the cutter location point Pt locus of the general turning part, the three-dimensional ellipse vibration on the cutter location point Pt is applied, the cutter location point P2t2 of the three-dimensional ellipse vibration applied on the cutter location point is calculated, the cutter is interacted with the surface S of the parts along the cutter location point P2t2 locus, and a micro-texture morphology is generated on the surface S of the parts. The problem of generation of the surface morphology of the three-dimensional ellipse vibration auxiliary cutting microgroove can be solved.

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...

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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.

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