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