船用柴油机凸轮轴形位误差非接触在位检测方法研究

On-machine measurement method of camshaft form and positionerror for marine diesel engines

船用柴油机凸轮轴的圆跳动、同轴度、轮廓度等几何形状误差的在位检测是实现其智能制造的关键之一.基于空间解析几何理论,提出具有自补偿功能的轴类零件形位公差在位检测方法.采用线激光测量仪的在位检测系统,进行轴类零件的跳动、同轴度、轮廓度公差等检测,通过试验验证检测的精度和准确性,为在线指导大尺寸轴类工件加工提供了理论基础.

The on-machine measurement of geometrical errors such as round runout,coaxiality,and profile of marine diesel engine camshafts is one of the keys to realize its intelligent manufacturing.Based on the spatial analytical geometry theory,a self-compensating method for the shape and position tolerance of shaft parts is proposed.The on-machine measurement system of the line laser measuring instrument is used to detect the runout,coaxiality and contour tolerance etc.of shaft parts.Our work provides a theoretical basis for online guidance of large-size shaft workpiece processing.