百分表接触游丝力矩的确定与分析

Determination and Analysis on Contact Balance Spring Torque of Dial Gauge

针对百分表在使用时经常出现的重复误差问题,对百分表齿轮传动系统在测量过程中受到的重力、齿轮啮合力进行了分析。通过分析发现,影响百分表游丝力矩的参数有传动系统的重力、齿轮轴与轴承间的摩擦因数和传动系统轴颈的直径尺寸,这些因素同样是影响重复误差的原因。提出了接触游丝力矩的计算方法和计算公式,以及百分表在设计和选材时应注意的问题。

In view of the repeated error problem that dial gauge often occurs during use,the gravity and gear meshing force of the dial gauge gear transmission system during the measurement process are analyzed.Through analysis,it is found that the parameters affecting the dial gauge balance spring torque are the gravity of the transmission system,the friction factor between the gear shaft and the bearing,and the diameter of the transmission system journal.These factors are also the reasons that affect the repeated errors.The calculation method and calculation formula of contact balance spring torque and the problems that should be paid attention to when designing and selecting materials for dial gauge are proposed.