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摘要:To overcome the loss of the working stroke caused by large stiffness flexible hinge in the single piezoelectric actuator Fast Tool Servo System(FTS), this paper presents a design method of large stroke FTS driven by two-way piezoelectric ceramics. First, the mechanical system is modelled and analysed to get the effect of mechanical parameters on the system response. Then based on the effect and guide means for stiffness requirements of compliant guide mechanism, we use compensating the flexibility matrix method to design a double parallelogram mechanism. Finite element simulation results show that the compensation method can significantly reduce parasitic displacement(reduced from 33.250μm to 4.545μm). The double parallelogram mechanism is completed based on the method of parallel symmetrical design. The results show that the stiffness in function direction is the small, the ratio of the stiffness in non-function direction to function direction is large, which ensure high accuracy and large stroke linear movement of the tool.
会议名称:

2020 the 7th International Conference on Automation and Logistics (ICAL 2020)

会议时间:

2020-07-22

会议地点:

中国北京

  • 专辑:

    工程科技Ⅱ辑

  • 专题:

    机械工业

  • DOI:

    10.26914/c.cnkihy.2020.046733

  • 分类号:

    TH122

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