Path planning method in multi-axis linkage abrasive belt grinding processing

Abstract

The invention discloses a path planning method of abrasive belt grinding processing, and the method is used for realizing the cutting tool path planning on a processed curved surface. The method is characterized in that the method specifically comprises the following steps of (S1) extracting equal parameter lines of a processed curved surface, (S2) planning a transition path between adjacent equal parameter lines in a parameter domain, and forming an initial cutter position locus in the parameter domain by using each equal parameter line and the transition path, (S3) carrying out discretization on the initial cutter position locus in the parameter domain, according to the corresponding relation between the parameter domain and points of a curved surface to be processed, projecting discrete points planned in the parameter domain to the curved surface to be processed, and obtaining cutter contact points, and (S4) calculating cutter position points corresponding to each cutter contact point, a cutter axis vector and a contact wheel axis vector, obtaining the cutter position data of abrasive belt grinding processing, and thus realizing the cutter path planning. According to the method, the overcutting between adjacent parameter lines due to speed abrupt change can be effectively reduced, a good speed change curve is obtained, and the grinding quality of a complex curved surface is raised.

Description

technical field [0001] The invention belongs to the technical field of numerical control processing, and in particular relates to a path planning method for abrasive belt grinding, which can be used for polishing and grinding complex profiles in a multi-axis linkage numerical control abrasive belt grinding machine tool. Background technique [0002] The surface of complex thin-walled parts such as blades is a free-form surface in space, with large curvature changes, and is prone to deformation after CNC milling, resulting in uneven distribution of grinding allowances. Grinding is usually used in the industry to ensure the uniformity of the machining allowance. However, with the continuous increase of blade size and volume, it is more and more difficult to use manual polishing, the efficiency is low, and the processing quality is difficult to guarantee-traditional manual polishing has gradually become a bottleneck restricting the rapid development of the blade industry, and t...

AI Technical Summary

Problems solved by technology

Therefore, this method of path planning is prone to overcutting during the transition because the grinding amount is greater than that of other parts

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