摘要
柔性导向机构是精密仪器设计中的一种重要的导向形式,其在导向方向的刚度计算是机构设计的关键技术.基于材料力学的弯矩方程,推导出平面柔性铰链的抗弯刚度解析式,并采用能量法求解出平面柔性铰链导向机构的刚度解析式.为验证解析公式的正确性,设计并加工了平面柔性铰链导向机构,在精密弹簧拉压实验仪上进行刚度测试,实验结果与理论计算结果进行对比,二者的相对误差为4.7%,证实了解析公式的正确性.
The flexural guiding mechanism plays an important role in precise instrument, and computing guiding stiffness is one of key techniques in design of guiding mechanism. Based on the equation of bending moment in material strength, the bending rigidity of the plane flexure hinge and the rigidity of the guiding mechanism incorporating the plane flexure hinge are deduced respectively. A sample of guiding mechanism is designed and fabricated, and testing is completed with a spring tester. The results from analysis and experiment show that the error of the rigidity equation is less than 4. 7 %, and the correction of the equation is proved.
出处
《西安工业大学学报》
CAS
2012年第8期631-635,共5页
Journal of Xi’an Technological University
基金
陕西省科学技术研究发展计划项目(S2011GY1051)
陕西省教育厅专项科研计划项目(09JK500)
关键词
平面柔性铰链
刚度
导向机构
簧片
plane flexure hinge
rigidity
guiding mechanism
reed
