제어로봇시스템학회:학술대회논문집

제어로봇시스템학회 (Institute of Control, Robotics and Systems)
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A Study on the Feed Rate Optimization of a Ball Screw Driven Machine Tool Feed Slide for Minimum Vibrations

  • Choi, Yong-Hyu (Dept. of Mechanical Design & Manufacturing Engineering, Changwon University) ;
  • Choi, Hoon-Ki (Dept. of Mechanical Design & Manufacturing Engineering, Changwon University) ;
  • Kim, Soo-Tae (Dept. of Mechanical Engineering, Changwon University) ;
  • Choi, Eung-Young (Graduate Student, Changwon National University)
  • 발행 : 2004.08.25
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초록

In order to prevent machine tool feed slide system from transient vibrations during operations, machine tool designers usually adopt some typical design solutions; box-in-box typed feed slides, optimizing moving body for minimum weight and dynamic compliance, and so on. Despite all efforts for optimizing design, a feed drive system may experience severe transient vibrations during high-speed operation if its feed rate control is unsuitable. A rough feed rate curve having discontinuity in its acceleration profile causes a serious vibration problem in the feed slides system. This paper presents a feed rate optimization of a ball screw driven machine tool feed slide system for its minimum vibration. Firstly, a ball screw feed drive system was mathematically modeled as a 6-degree-of-freedom lumped parameter system. Next, a feed rate optimization of the system was carried out for minimum vibrations. The main idea of the feed rate optimization is to find out the most appropriate smooth acceleration profile with jerk continuity. A genetic algorithm was used in this feed rate optimization

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