检查凸轮轴用的坐标测量机在现代发动机制造业中最困难和最特殊的检测对象，是那些具有凸轮的零件，例如分配轴和凸轮轴等。为了进行检查，国外生产了专用程控检测装置和相应的测量附件。检查凸轮时必须确定下列参数：支承轴颈的跳动量、表面形状误差（棱度、椭圆度、腰鼓... The CMM used to inspect camshafts The most difficult and unique test objects in the modern engine manufacturing industry are those with cams, such as splitter shafts and camshafts. In order to carry out the inspection, a special program-controlled testing device and corresponding measuring accessories have been produced abroad. The following parameters must be checked when checking the cam: amount of jerk on bearing journal, surface shape error (edge, ovality, waist drum ...