Self-acting optimal design of spindle speed variation for regenerative chatter suppression based on novel analysis of internal process energy behavior
Self-acting optimal design of spindle speed variation for regenerative chatter suppression based on novel analysis of internal process energy behavior
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DOI：
10.1016/j.ijmachtools.2020.103639
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发表时间：
2020-12
影响因子：
14
通讯作者：
Shuntaro Yamato;Takamichi Ito;H. Matsuzaki;Junichi Fujita;Y. Kakinuma
中科院分区：
文献类型：
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作者：
Shuntaro Yamato;Takamichi Ito;H. Matsuzaki;Junichi Fujita;Y. Kakinuma
主轴变速(SSV)是一种通过破坏再生效应来抑制颤振的有效而灵活的技术。在大多数研究中，SSV是通过大量复杂的稳定性仿真来正确设计的，包括在改变设计参数的情况下进行耗时或昂贵的实验来辨识机器动力学；因此，这种方法不能在线或可在机床上进行自主自抑制颤振的积分。本文提出了一种正弦主轴变速的可编程优化设计方法，该方法只需测量颤振频率，并能将机床约束纳入设计过程。该设计思想基于SSSV循环过程中运动内部过程能量平衡的最小化，以有效地消散颤振能量。为此，最初为无线电通信工程中的调频(FM)技术定义的调制指数被引入SSSV中作为一种新的指数。文中还提出了SSSV频率的新设计准则，以保证SSSV周期内不发生瞬时失稳，即拍频振动。为验证该方法的有效性，进行了一系列的时域SSSV模拟和钻孔试验。结果表明，所提出的设计方法所建议的参数候选能够以较小的拍频振动最优地消散颤振。
Spindle speed variation (SSV) is a well-known effective and flexible technique to suppress chatter vibration by disrupting regenerative effect. In most research, the SSV is properly designed by a large number of complex stability simulations including identification of machine dynamics with time consumption or costly experiments while varying design parameters; hence, this approach cannot be on-line or integrable in the machine tools for autonomous self-suppression of chatter vibration. This paper presents a programmable optimal design methodology for sinusoidal spindle speed variation (SSSV), which only requires measuring the chatter frequency and can incorporate the machine constraints into the design procedure. The design concept is based on the minimization of kinematic internal process energy balance during SSSV cycle for efficient chatter energy dissipation. For this purpose, the modulation index, which is originally defined for frequency modulation (FM) technology in radio communication engineering, is introduced into SSSV as a novel index. The novel design criteria in terms of SSSV frequency are also proposed for robust chatter suppression without a momentary destabilization during SSSV cycle, called as beat vibration. A series of time-domain SSSV simulation and boring tests are carried out in depth for verification. It can be concluded that, the parameter candidates suggested by the proposed design procedure can optimally dissipate the chatter with little beat vibration.