Theoretical and experimental study on rifling mark generating phenomena in BTA deep hole drilling process (generating mechanism and countermeasure)
Theoretical and experimental study on rifling mark generating phenomena in BTA deep hole drilling process (generating mechanism and countermeasure)
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DOI：
10.1016/j.ijmachtools.2014.10.003
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发表时间：
2015-01-01
影响因子：
14
通讯作者：
Tsukamoto, Keizo
中科院分区：
文献类型：
--
作者：
Matsuzaki, Kenichiro;Ryu, Takahiro;Tsukamoto, Keizo
镗削和套料协会（BTA）深孔钻削用于产生具有高纵横比的孔。在此过程中，有时会发生颤振，并在膛孔表面形成膛线痕迹。认为膛线痕迹产生的原因是时滞引起的自激振动。建立了详细考虑镗杆支承条件的分析模型。在用于BTA钻孔的真实的机器中，镗杆被支撑在油压头和支撑垫处以及基座处。对自激振动的稳定性进行了数值分析，并与实验结果进行了比较。理论和实验结果吻合得很好。此外，作者提出的一个额外的导向垫作为对策的效果进行了理论和实验评估。(C)2014爱思唯尔有限公司版权所有。
Boring and Trepanning Association (BTA) deep hole drilling is used for producing holes with high aspect ratios. In this process, chatter vibration sometimes occurs, and a rifling mark is formed on the bore surface. The rifling mark generating phenomenon is considered to be a result of self-excited vibration caused by time delay. An analytical model is proposed considering the supporting condition of the boring bar in detail. In a real machine for BTA drilling, the boring bar is supported at the oil pressure head and the supporting pad, as well as at the base. The stability of the self-excited vibration is analyzed numerically, and the result is compared with the experiment. The theoretical and experimental results agree well with each other. Furthermore, the effect of an additional guide pad proposed by the authors as a countermeasure is evaluated theoretically and experimentally. (C) 2014 Elsevier Ltd. All rights reserved.