汽车轴类零件回转表面螺线纹理形貌的检测评定

Measurement and Evaluation on Twist Structure of Rotary Sealing Surface of Auto Shaft Parts

一般来说，工件的表面形貌特征应该包含粗糙度、波纹度和形状误差。但事实上．对工件表面形貌的检测和评定，习惯性地理解为只是进行表面微观形状误差的定量表述，主要为粗糙度和波纹度，形状误差通常和位置误差合称，即“形位公差”，与尺寸误差结合在一起作为宏观测量的一部分。另一方面，传统的、成熟的粗糙度、波纹度的检测和评定，均只停留在二维的状态。以汽车发动机的关键零件曲轴的配合面——法兰外圆面为例，迄今为止，绝大多数发动机厂在进行曲轴法兰外圆面的微观测量时还只是检测粗糙度这一项，

Taking rotary sealing face of parts for example, the characteristics and forming reason of surface micro profile about twist structure were analyzed, as well as the great influence on product quality. An exact measuring method to twist micro structure was described, and a fast way for measuring and evaluating twist profile of rotary face for auto factories was introduced.