高准确度刚度测量仪结构优化设计

针对高准确度小变形弹性元件的刚度测量需求,以锥形弹性垫圈弹性试验为例,分析了目前国内通用刚度测量仪在测量高准确度小变形弹性元件刚度时存在的问题,通过分析与试验验证,得出在设计高准确度刚度测量仪时,应避免选用悬臂梁式施力机构和悬臂梁式力值测量器的观点,提出力值测量器和位移测量器分别采用柱式力传感器和激光位移传感器,施力机构采用双立柱的高准确度刚度测量仪设计方案。

Structural Optimization Design of Stiffness Measuring Instrument with High Accuracy

Aiming at the stiffness measurement requirements of elastic elements with high accuracy and small deformation, and taking the elastic test of tapered elastic washers in GB/T 94.4 as an example to analyze the problems existing in the domestic universal stiffness measuring instrument when measuring elastic elements with high accuracy and small deformed. Through analysis and experimental verification, and discuss the selection of the displacement measuring device, it is concluded that when designing the stiffness measuring instrument with high accuracy, the cantilever beam loading mechanism and the cantilever beam load measuring device should be avoided. It is proposed a stiffness measuring instrument with high accuracy design scheme that the load measuring device adopts the column force sensor and the displacement measuring device adopts the laser displacement sensor, and the force applying mechanism adopts a double column type .