滚动直线导轨副额定静载荷研究

Research on Rated Static Load of Linear Rolling Guide

为了解决滚动直线导轨副额定静载荷难以直接测定的现状,基于滚动直线导轨副的结构特点,结合ISO14728-2关于滚动直线导轨副额定静载荷的定义和计算方法,提出利用滚动直线导轨副加载/卸载刚性曲线来间接测定其额定静载荷的试验方案,并且实际测定了某商用滚动直线导轨副的额定静载荷,验证了该试验方案的可行性。在试验的基础上,进一步分析了滚动直线导轨副的承载变形机理,指出现有滚动直线导轨副额定静载荷计算方法的不足,提出考虑承载过程中接触角改变的修正算法,计算结果显示该算法能显著降低计算误差。

To change the present situation of having difficulty in measuring the rated static load of linear rolling guide directly,an indirect protocol using the load/unload stiffness curve of linear rolling guide is proposed based on the structural characteristics and the definition and calculation formula specified in ISO14728-2 of linear rolling guide. A commercial linear rolling guide is tested to verify the feasibility of the protocol mentioned above. Furthermore,a deficiency of existing calculation method is pointed out on the strength of experimental results and the deformation mechanism of linear rolling guide,and a correction algorithm is put forward considering the contact angle change which reduces the calculation error remarkably.Abstract ： To change the present situation of having difficulty in measuring the rated static load of linear rolling guide directly, an indirect protocol using the load / unload stiffness curve of linear rolling guide is pro- posed based on the structural characteristics and the definition and calculation formula specified in ISO14728- 2 of linear rolling guide. A commercial linear rolling guide is tested to verify the feasibility of the protocol mentioned above. Furthermore, a deficiency of existing calculation method is pointed out on the strength of experimental results and the deformation mechanism of linear rolling guide, and a correction algorithm is put forward considering the contact angle change which reduces the calculation error remarkably.