东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2009, Vol. 30 ›› Issue (9): 1322-1325.DOI: -

• 论著 • 上一篇    下一篇

3-PRS型并联机床的配重平衡法

孟祥志;刘春时;李明;杨流;   

  1. 东北大学机械工程与自动化学院;沈阳机床(集团)有限责任公司;山西长治清华机械厂;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2009-09-15 发布日期:2013-06-22
  • 通讯作者: Meng, X.-Z.
  • 作者简介:-
  • 基金资助:
    辽宁省自然科学基金资助项目(20072023);;

On the counterweight law of 3-PRS parallel machine tool

Meng, Xiang-Zhi (1); Liu, Chun-Shi (2); Li, Ming (1); Yang, Liu (3)   

  1. (1) School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China; (2) Shenyang Machine Tool (Group) Co. Ltd., Shenyang 110142, China; (3) Shanxi Changzhi Qinghua Machinery Factory, Changzhi 046012, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-09-15 Published:2013-06-22
  • Contact: Meng, X.-Z.
  • About author:-
  • Supported by:
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摘要： 针对3-PRS型并联机床由于运动部件质量较大,要3个驱动电机输出较大的驱动力来克服运动部件的自重,需要动态平衡的问题,提出利用配重法,通过在三条支链上配置滑轮平衡机构,在动静平台之间配置平行机构来实现空间平衡.通过理论推导和实例计算得出:在每条支链上添加的两个配重的质量分别为31.09 kg和57.69 kg,平衡动平台所需的配重质量为157.36 kg.经仿真验证表明,平衡后驱动杆的最大输出力约为10 N,远远小于平衡前的驱动输出力1 100 N,平衡效果很好.

关键词: 并联机床, 动态平衡, 配重法, 仿真, ADAMS

Abstract: Because of the big mass of moving parts, three motors are needed on parallel machine tool to drive those parts, and the dynamic balance of the machine tool is needed during moving. Three counterweight pulleys are therefore provided for relevant branch chains to implement the spatial dynamic balance via the parallel mechanisms positioned between the moving and resting platforms for every branch chain. By means of theoretical derivation and practical calculation, the counterweights needed for two branch chains are 31.09 kg and 57.69 kg, and that for the moving platform is 157.36 kg. Simulation results showed that the maximum force output of drive rod is about 10N after dynamic balance-it is less by far than before dynamic balance: 1100 N. A satisfactory balancing result is thus obtained.

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