A Multi-Tier Design Methodology for Reconfigurable Milling Machines
A Multi-Tier Design Methodology for Reconfigurable Milling Machines
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DOI：
10.1115/1.4027315
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发表时间：
2014-08
影响因子：
4
通讯作者：
Hay Azulay;J. Mills;B. Benhabib
中科院分区：
文献类型：
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作者：
Hay Azulay;J. Mills;B. Benhabib
可重构机床是为适应敏捷柔性制造的要求而发展起来的。RMT的当前设计方法支持模块化可重构性，其中针对给定部件组装机器配置。在本文中，另一方面，可重构性依赖于冗余，即通过锁定/解锁自由度（DOF）的拓扑重构获得所需的RMT配置。因此，为了设计一个冗余可重构机床（RRMT）与它的所有自由度已经包括，一个新的多层优化设计方法的发展。该设计是制定有效的选择最好的体系结构从一组串行/并行/混合解决方案，同时考虑冗余的可重构性对性能的影响。本文通过基于并联运动机构（PKM）的冗余可重构细观铣削机床（RRmMT）的设计测试案例证明了该方法的可行性，该机床可以在细观铣削中所需的高进给速率下获得高刚度。
Reconfigurable Machine Tools (RMTs) have been developed in response to agile flexible manufacturing demands. Current design methodologies for RMTs support modular reconfigurability in which a machine configuration is assembled for a given part. In this paper, on the other hand, reconfigurability relies on redundancy, namely, a desired RMT configuration is obtained through topological reconfiguration by locking/unlocking degrees-of-freedom (dof). Thus, in order to design a Redundant Reconfigurable Machine Tool (RRMT) with all of its dof already included, a new multi–tier optimization based design methodology was developed. The design is formulated for the efficient selection of the best architecture from a set of serial/parallel/hybrid solutions, while considering the redundant reconfigurability effect on performance. The viability of the methodology is demonstrated herein via a design test case of a Parallel Kinematic Mechanism (PKM)-based Redundant Reconfigurable meso-Milling Machine Tool (RRmMT) that can attain high stiffness at the high feed-rate required in meso-milling.