Comprehensive Optimization Design for the A-Axis Support of an AC Double-Swing Angle Milling Head

Hailin Liao; Yun Xu; Tao Zhang; Wenlu Zhang

doi:10.62051/ijmee.v8n1.15

Authors

Hailin Liao
Yun Xu
Tao Zhang
Wenlu Zhang

DOI:

https://doi.org/10.62051/ijmee.v8n1.15

Keywords:

AC Double-Swing Angle Milling Head, A-Axis Support, Multi-Objective Optimization, Lightweight Design

Abstract

As a critical component of the AC double-swing angle milling head, the A-axis support significantly influences its dynamic and static performance. To reduce its mass while meeting static and dynamic requirements, systematically optimize the A-axis support structure, enhance the operational performance of the milling head, and lower material costs, a method combining topology optimization and multi-objective optimization is proposed. The original static and dynamic performance of the A-axis support is analyzed, and optimization objectives are defined. Topology optimization is then employed to identify optimizable regions of the A-axis support, based on which the structure is reconstructed.Based on the topology optimization results, a mathematical model is established with design variables including the wall thickness, rib thickness, and lightening hole size of the A-axis support. The optimization objectives are to minimize mass and maximize the first-order natural frequency, with deformation as the constraint. The Central Composite Design (CCD) method is used to obtain initial sample points, a Kriging model is constructed to establish the response surface, and finally, the Multi-Objective Genetic Algorithm (MOGA) is applied for optimization. After optimization, the deformation of the A-axis support is less than before, meeting the static stiffness requirement. The mass is reduced by 13.87%, achieving the lightweight objective, and the total deformation is decreased by 22.1%, indicating improved static performance.

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