Numerical control process design and optimization method based on processing knowledge

Abstract

The invention discloses a numerical control process design and optimization method based on machining knowledge, and relates to the technical field of numerical control process design, and the method comprises the steps of building a machining knowledge data model by taking machining characteristics as a carrier; orderly integrating programming, post-processing, cutting simulation, machining process monitoring and detection and machining result detection; determining different storage data types, and storing the data of each link, so a product processing whole-process data flow is broken through, and effective accumulation of product processing whole-cycle knowledge is realized; establishing an association relationship between processing knowledge and part features, and constructing a numerical control process basic data model; based on a historical processing effect evaluation result, achieving the reuse of the processing knowledge, and forming the process closed-loop control oriented to the whole process of product processing, and completing the numerical control process design and optimization, so the repeated occurrence of historical processing quality problems is effectively avoided, the numerical control process design level can be remarkably improved, and an efficient and stable numerical control process scheme is provided for intelligent processing.

Description

technical field [0001] The invention relates to the technical field of numerical control process design, in particular to a numerical control process design and optimization method based on machining knowledge. Background technique [0002] The NC machining process is the link connecting the part design model and the final product, and directly affects the final processing quality of the part. In the fields of aviation, aerospace, ships, etc., with the improvement of the performance of aircraft, rockets, ships and other products, the parts of the above products show a trend of becoming more complex and high-precision, and the processing difficulty is significantly increased, which puts forward higher requirements for CNC processing technology. . Under the multi-variety and small-batch production mode in the above-mentioned fields, it is impossible to obtain an efficient and stable process plan through continuous iterative optimization, and the processing process is unpredic...

AI Technical Summary

Problems solved by technology

[0004] The existing public NC process design methods mainly include cutting parameter optimization, machining trajectory optimization, process decision-making based on knowledge base, etc., which can improve the level of NC process design to a certain extent, but have not realized the process closed-loop control in the NC process design stage. And the data connection for the whole process of product processing cannot effectively improve the level of CNC process design

Images