Automatic mold grinding method based on complex curved surface feature division

Abstract

The invention discloses an automatic mold grinding method based on complex curved surface feature division. The method comprises the following steps of setting the curvature of a concave curved surface as a negative value and the curvature of a convex curved surface as a positive value, and dividing the surfaces of molds into multiple surface categories according to a principal curvature value; matching the mold surface categories with grinding tools to construct a tool library of a grinding robot; formulating a grinding path according to the surface shapes of the molds, the tool library and a grinding process; establishing an automatic grinding program according to the grinding path, the tool library and the grinding process; and downloading the automatic grinding program to the grinding robot, and starting the grinding robot for automatic grinding. According to the method, through analysis of the complex surface molds such as automobile connecting rods, the grinding tools and material removal models, the grinding robot is controlled to realize multi-tool constant material removal grinding and polishing of the complex surface molds such as the automobile connecting rods, so that the production quality and the production efficiency of the complex surface molds such as the automobile connecting rods are improved, and time and cost consumed by grinding and polishing of the complex surface molds such as the automobile connecting rods are greatly reduced.

Description

technical field [0001] The invention relates to a grinding and polishing method for an automobile connecting rod mold, in particular to an automatic mold grinding method based on complex curved surface feature division. Background technique [0002] At present, for the mold processing of complex free-form surface workpieces, the main method is still manual grinding. Manual grinding and polishing has disadvantages such as unstable grinding and polishing quality, poor consistency, low efficiency, and harsh working environment, which affects the entire industry. level of manufacturing. [0003] The surface of the automotive connecting rod mold is usually more complicated. Using a single type of grinding tool usually encounters that some corners of the automotive connecting rod mold cannot be polished well, or the grinding efficiency is low due to the small size of the grinding tool, and the mold cannot be completed well. However, the use of multiple grinding tools for mold gri...

AI Technical Summary

Problems solved by technology

[0002] At present, for the mold processing of complex free-form surface workpieces, the main method used is still manual grinding. Manual grinding and polishing has unstable grinding and polishing quality and poor consistency , low efficiency, and poor working environment, which affect the manufacturing level of the entire industry

[0003]The surface of the automotive connecting rod mold is usually more complex. Using a single type of grinding tool usually encounters that some corners of the automotive connecting rod mold cannot be polished well, or due to The grinding tool is too small, which leads to low grinding efficiency and cannot complete the grinding task of the mold well. However, the use of multiple grinding tools for grinding the mold usually results in inconsistent material removal on the surface of the connecting rod mold at the junction of different grinding tools.

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