Five-axis side milling cutting force predicting method based on ACIS platform

Abstract

The invention discloses a five-axis side milling cutting force predicting method based on an ACIS platform, and is used for solving the problem that the real machining condition cannot be reflected in conventional cutting force calculation. The method comprises the following steps of: fitting the edge of a cutter with unequal space width through a B spline, simulating by a finite element method to acquire a cutting force, calibrating dynamic eccentric parameters of the cutter by using the cutting force data, correcting cutter position data by using the eccentric parameters of the cutter to acquire actual cutter reference points, extracting an instantaneous cutter-workpiece engagement region by using the actual cutter reference points and using ACIS as a platform, calculating the actual movement locus and the instantaneous cutting thickness of the edge by using the actual cutter reference points, and calculating the instantaneous cutting force by using the calculated cutting thickness and the calibrated cutting force coefficients. According to the method, the instantaneous cutting thickness is calculated by using the actual movement locus of the edge, so that the real machining condition is reflected, and the predicting accuracy of the cutting force is improved.

Description

technical field [0001] The invention relates to the technical field of computer aided manufacturing, in particular to a cutting force prediction method for five-axis side milling based on an ACIS platform. Background technique [0002] In the field of machinery manufacturing, milling is widely used in the manufacture of complex parts in the fields of aviation, aerospace, molds and automobiles, and is one of the important processing methods to obtain high-precision complex surfaces. Compared with traditional point milling, five-axis side milling uses side edges for line contact processing, which can achieve higher processing efficiency and surface quality. Cutting force is an important basis for optimizing process parameters and improving machining efficiency. Therefore, it is of great significance to predict cutting force for side milling of complex curved surface parts. [0003] The current cutting force calculation methods for five-axis side milling are all aimed at const...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a cutting force prediction method for five-axis side milling based on the ACIS platform, which solves the problem of assuming that there is no eccentricity between the tool axis and the spindle axis in the existing cutting force calculation And the helix angle of the tool is a constant, which cannot reflect the real processing situation, so as to accurately calculate the cutting force and provide a reliable guarantee for efficient and precise machining of spatial surfaces

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