Latest Machine Tool Structural Design Technology for Ultra-Precision Machining
Ryota Shindo* and Shinji Nishiwaki**,
*Nagase Integrex Co., Ltd.
1333-1 Atobe, Mugegawa-cho, Seki, Gifu 501-2697, Japan
**Department of Mechanical Engineering, Kyoto University, Kyoto, Japan
Most machine tools comprise a combination of square blocks and plates for each body structure, which is not fully optimized. One reason for the nonoptimal design is that machine tool designers face difficulty in introducing curved structures to fulfill functional requirements. In this paper, completely new structures of the surface profile grinding machine have been developed, pursuing the ideal structure by defying fundamental design rules as well as by utilizing topology and shape optimization methods. The combination of fundamental techniques and state-of-art techniques enables lightweight structures that can achieve two-times higher resonance frequency, 40–50% space-saving, and 60–100% productivity improvement, compared to those with the conventional design.
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