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Multidisciplinary design optimization of tool head for heavy duty CNC vertical turning mill

Ming Zhao (CAD Center, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China)
Zhengdong Huang (CAD Center, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China)
Liping Chen (CAD Center, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China)

Engineering Computations

ISSN: 0264-4401

Article publication date: 10 October 2008

601

Abstract

Purpose

The purpose of this paper is to introduce a new method to carry out the design optimization of the tool head system in the heavy‐duty machine tool where closed hydrostatic guideways with multiple pockets are employed.

Design/methodology/approach

A more accurate method of pressure calculation for closed hydrostatic guideways is introduced. Then, a multidisciplinary design optimization (MDO) model is formulated for design of a tool head system, which minimizes the highest pocket pressure under some constraints from machining accuracy and vibration resistance requirements as well as constraints from ballscrew design specifications. Finally, a metamodel‐based design space alternation (DSA) strategy is proposed to solve the optimization problem.

Findings

The results show that the maximum pocket pressure in a tool head system can be reduced over 47 percent with a proper design while all the constraints are satisfied. As a consequence, the tool head system can safely work under the maximum output pressure of oil supply system.

Originality/value

This paper introduces a more accurate method of pressure calculation for multi‐pocket closed hydrostatic guideways, develops a metamodel‐based MDO model for the tool head system, and proposes a DSA strategy to solve the MDO problem.

Keywords

Citation

Zhao, M., Huang, Z. and Chen, L. (2008), "Multidisciplinary design optimization of tool head for heavy duty CNC vertical turning mill", Engineering Computations, Vol. 25 No. 7, pp. 657-676. https://doi.org/10.1108/02644400810899951

Publisher

:

Emerald Group Publishing Limited

Copyright © 2008, Emerald Group Publishing Limited

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