汽车发动机缸盖品质控制方法探讨——以缸盖阀座跳动校准件的测量为例

汽车发动机缸盖阀座的精加工属于核心工艺,加工后需要用阀座跳动检具对缸盖进、排气门的跳动及圆度进行在线测量。阀座跳动检具应用跳动校准件进行标定。因此,阀座跳动校准件的核心参数圆度、跳动的量值关系到在线检具的量值传递准确性,都会影响缸盖产品的在线检测结果。本文以精密型三坐标为测量设备,讨论阀座跳动标准件关键参数的测量与评价方法。

Machining of valve seat is a key process in cylinder head manufacture. After valve seat machining operation the roundness runout and width of valve seat should be measured by width and runout gauge to ensure the key parameters of valve seat is in a proper value range.