Lightweight Design of the A3 Spindle Head Based on the Compliance Constraint of the End-effectors

doi:10.3901/JME.2016.17.105

Abstract

Abstract:

An approach for the lightweight design of a 3-DOF spindle head—A3 head designed for high-speed milling of large aircraft structural components is presented. The approach can be implemented by two steps: ① formulation of the compliance bounds in the local coordinate system according to the processing parameters for high-speed milling, ② minimization of the overall weight of the movable components subject to the compliance and geometrical constraint using the response surface method and the multi-island genetic algorithm (MIGA) integrated in iSIGHT. Compared to the original design, the simulation results show that the compliance of the system can be decreased by more 50%, and the first order frequency can be increased by 30% at the cost of increasing the weight of movable components by just 3.6%. The approach has been successfully employed to design the equipment.

Key words: compliance, parallel spindle head, lightweight design

LI Qi, LIU Haitao, HUANG Tian. Lightweight Design of the A3 Spindle Head Based on the Compliance Constraint of the End-effectors[J]. Journal of Mechanical Engineering, 2016, 52(17): 105-115.

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Lightweight Design of the A3 Spindle Head Based on the Compliance Constraint of the End-effectors

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