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LOW FREQUENCY VIBRATION CONSIDERATION IN TOOL-PATH COMPUTATION OF TWO-LINK SERIAL MANIPULATOR FOR IMPROVED ACCURACY

机译:两连续式机械手工具路径计算中的低频振动考虑,提高精度

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摘要

Industrial robots are flexible and cost-efficient tools for a multitude of applications such as, polishing, grinding, deburring, and welding. However, their utilization in machining tasks is currently limited due to insufficient position accuracy. This study aims to answer the research question: 'Does including low frequency vibrations (mode coupling chatter) in tool path computation improve accuracy?' For this purpose, the current paper focuses on setting-up a robust and flexible simulation framework. The framework implements a predictive cutting force method into a multibody dynamic (MBD) model of an industrial robot. The framework is structured in an extendable fashion for future research tasks. Future work will include mode coupling chatter into the MBD model to help mitigate the effects of chatter in robotic machining process, which in turn will increase tool-path accuracy.
机译:工业机器人是灵活且具有成本良好的工具,适用于多种应用,如抛光,磨削,去毛刺和焊接。然而,它们在加工任务中的利用目前由于位置准确性不足而受到限制。本研究旨在回答研究问题:'在刀具路径计算中是否包括低频振动(模式耦合Chatter)提高了准确性?“为此目的,目前的纸张侧重于设置强大而灵活的仿真框架。该框架将预测切割力方法实现成工业机器人的多体动态(MBD)模型。该框架以可扩展的方式为未来的研究任务构建。未来的工作将包括模式耦合抖动进入MBD模型,以帮助减轻喋喋不休在机器人加工过程中的影响,从而提高工具路径精度。

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