Condition for machining feasibility for a five-axis machining center
Condition for machining feasibility for a five-axis machining center
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DOI：
10.1016/j.precisioneng.2021.09.013
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发表时间：
2021-09
期刊：
影响因子：
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通讯作者：
Naoki Wakai;Keigo Takasugi;N. Asakawa
中科院分区：
文献类型：
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作者：
Naoki Wakai;Keigo Takasugi;N. Asakawa
最近，已经开发出具有非正交旋转轴的五轴加工中心，以实现高刚度和大加工面积。虽然此类机床可以扩展制造领域，但不仅采用正交轴，而且还采用非正交轴，需要推广传统的成形理论。此外，由于不可能想象非正交轴机床的同时五轴运动，因此通过结构分析方法利用广义成形理论来分析所开发的非正交轴机床的有效性非常重要。本文首先对成形函数进行概括，明确了非正交轴加工中心能够实现各种位置和姿态的条件，作为表明机床结构有效性的指标。最后，利用推导的条件验证了非正交轴机床结构的加工可行性。
Recently, five-axis machining centers with non-orthogonal rotation axes have been developed to achieve a high stiffness and large machinable area. Although such machine tools can expand the manufacturing field, adopting not only orthogonal axes, but also non-orthogonal axes, requires generalization of conventional form-shaping theory. Moreover, since it is not possible to imagine simultaneous five-axis movement of machine tools with non-orthogonal axes, it is important to analyze the validity of the developed machine tools with non-orthogonal axes using generalized form-shaping theory by a structure analysis method. In the present paper, generalization of the form-shaping function is first performed, and the conditions whereby machining centers with non-orthogonal axes can achieve every position and posture are clarified for an index showing the validity of the machine tool structure. Finally, the machining feasibility is verified for a machine tool structure with non-orthogonal axes using the derived conditions.