Machine tool stand column structure optimization method combining rapid prototyping and finite element simulation

Abstract

The invention provides a machine tool stand column structure optimization method combining rapid prototyping and finite element simulation. The method comprises the following steps of creating a finite element model of a machine tool stand column structure for finite element static and dynamic analysis; establishing a topological optimization mathematical model by taking the structural flexibility and the inherent frequency as topological optimization targets, and optimizing a main body frame of the machine tool stand column; performing internal rib plate bionic structure design according to the obtained main body frame of the machine tool stand column to reconstruct a machine tool stand column structure; obtaining a plurality of groups of optimization schemes by using a central composite test design method; establishing a response surface model, and determining an optimal structure scheme through a multi-target genetic algorithm; conducting entity construction and verification on the machine tool stand column structure through the rapid prototyping technology; and processing, assembling and testing according to the optimal structure scheme. The optimization effect of the machine tool stand column structure is verified through an actual entity test, the performance of the machine tool stand column is effectively improved, use of manufacturing materials is reduced, and the performance of an original design structure is improved.

Description

technical field [0001] The invention relates to the technical field of machine tool structure optimization, in particular to a machine tool column structure optimization method combined with rapid prototyping and finite element simulation to improve the performance of the machine tool column. Background technique [0002] In recent years, the state has attached great importance to strategic emerging industries, and the high-end equipment manufacturing industry, one of the seven key industries, has developed rapidly. High-end CNC machine tools are the core equipment of the high-end equipment manufacturing industry. They have the characteristics of high speed, precision, intelligence, compounding, multi-axis linkage, and network communication. They are an important symbol of the development level of a country and a region's equipment manufacturing industry. The manufacturing mother machine on which the development of precision equipment such as automobiles and electronic infor...

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Problems solved by technology

According to relevant data, at present, the design of the column structure of machine tools mostly adopts a single optimization method, and it is difficult to realize the lightweight and high stability of the column structure

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