摘要
采用直圆柔性铰链支撑的复合平行四杆机构,设计了一种压电陶瓷(PZT)驱动器的装夹机构。该机构具有导向精度稳定、响应速度快、分辨率高和无耦合运动等优点。从力学理论出发推导了柔性铰链刚度的简化计算公式,运用参数化的分析方法求得了柔性铰链结构参数对装夹机构应力、刚度及有效行程的影响。实验测得刚度和有效行程的理论计算误差分别仅为3.9%和1.4%,表明了该设计方法的可靠性与有效性。
By adopting the right circular flexible hinge supported complex parallel four-bar linkage, a kind of clamping mechanism of piezoceramics driver was designed. This mechanism possesses the advantages of stabilized guiding precision, quick response speed, high resolution ratio and non-coupling movement etc.. Start from the mechanics theory the simplified calculation formula of flexible hinge stiffness was derived. Utilizing the parameterized analytical method the influence of structural parameters of flexible hinge on the stress of clamping mechanism, rigidity and effective travel distance was obtained. The theoretical calculation errors of rigidity and effective traveling distance measured by experiment were separately only 3.9% and 1.4%, thus indicated the reliability and effectiveness of this designing method.
出处
《机械设计》
CSCD
北大核心
2009年第9期11-13,共3页
Journal of Machine Design
基金
湖北省现代制造质量工程重点实验室开放基金资助项目(LMQ2006A02)
江西省工业攻关资助项目
