Inclined milling surface appearance generating method based on machining physical process

Abstract

An inclined milling surface appearance generating method based on a machining physical process comprises the steps of according to the cutter-workpiece position relation of cutter shaft inclined milling, determining the milling machining parameters, the cutter geometrical shape parameters and a cutter movement track equation, and after a cutter cutting edge and a milled workpiece are discretized into point sets respectively according to the movement track, carrying out Boolean operation on the movement track of the discrete points of the cutter and the workpiece, wherein the obtained outermost space envelope boundary is the surface appearance of the workpiece generated by milling; and then achieving the roughness parameter calculation and machining process parameter optimization. The method disclosed by the invention reveals the formation rule of macro and micro textures on the surface on the basis of a visualization algorithm and through a geometric space motion trajectory equation of the cutting edge, predicts the surface topography under the cutter shaft inclined milling, and realizes the roughness parameter calculation and the machining process parameter optimization.

Description

technical field [0001] The invention relates to a technology in the field of mechanical processing, in particular to a method for creating surface topography of inclined milling based on the physical process of processing. Background technique [0002] Surface roughness is an important parameter to characterize the surface quality, which determines the matching properties of the contact pair, and also affects the wear resistance, fatigue strength, meshing vibration and noise of mechanical parts. As the most common evaluation index to measure the processing quality of parts, surface roughness parameters directly determine the service life and reliability of key parts. Although the roughness of a part can be measured by a roughness meter, this will increase the actual production time and manufacturing cost. The reconstruction of the three-dimensional surface topography is the prerequisite for calculating the roughness parameters. Milling is a commonly used processing method,...

AI Technical Summary

Problems solved by technology

[0003] Existing technologies mainly focus on the surface topography prediction under the condition of side milling or milling cutter not tilted, sweeping the tool nose trajectory along the tool contour equation to obtain the milling surface topography, or using the dexel line method to establish the tool model and The workpiece model, and considering the random components of the surface profile, simulated the side milling surface topography, or predicted the surface topography based on the tool and workpiece scanning point cloud technology, but these techniques did not consider the side milling surface in the case of tool tilt appearance

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