轴承摩擦力矩测量设备的设计

Design of Bearing Friction Moment Measuring Equipment

为测量不同温度下轴承的摩擦力矩,基于传递法测量原理,设计一种新型轴承摩擦力矩测量设备。设备中保温箱下层的工艺孔使用密封结构进行密封,并针对被测轴承与测量主轴对接时产生的冲击问题,设计新型类鼠盘式可分离夹具,实现对接时的平稳过渡。使用LabVIEW编写相关运动控制、数据采集、控制界面程序。经程序计算处理后,获取轴承摩擦力矩值、变化曲线等数据。最后,使用该设备对SKF7207深沟球轴承进行摩擦力矩测量。结果表明:设备最大重复测量误差为0.00049 N·m,重复性较好,满足设计要求。

In order to measure the friction torque of bearings at different temperatures,a new type of bearing friction torque measurement equipment was designed based on the measurement principle of the transfer method.The process hole in the lower layer of the incubator in the equipment was sealed with a sealed structure,and in view of the impact problem generated by the tested bearing and the measuring spindle during the docking,a new type of rat-like detachable clamp was designed to achieve a smooth transition.LabVIEW was used to write related motion control,data acquisition,and control interface programs.After the program was calculated and processed,the bearing friction torque value,change curve and other data were obtained.Finally,this equipment was used to measure the friction torque of SKF7207 deep groove ball bearings.The results show that the maximum repeatable measurement error of the equipment is 0.00049 N·m,which has good repeatability and meets the design requirements.