汽车机加件表面几何状态参数含义及工艺分析

简述了机加件表面形状、波纹度和粗糙度3个要素的特点、形成机理以及对产品性能的影响。介绍了法国标致雪铁龙公司(PSA)机加件表面几何状态标准中粗糙度、波纹度和支承率等各个参数的含义及各个参数分析与计算方法,及如何根据不同配合表面的功能需要正确选择评定表面质量的微观参数。通过汽车零部件中一些典型零件表面的粗糙度、波纹度及支承率等参数标注的具体实例,解释了粗糙度等各种参数在产品中所表示的意义,及在产品开发、工艺改造、现生产质量控制中如何理解这些标注。

Surface Geometrical Parameter Meaning and Process Analysis of Machined Automotive Parts

The paper summarized the features and forming mechanism of surface three parameters like shape,waviness and roughness,as wells as their effects on product performance.It introduced the meanings,calculation method of different parameters including roughness,waviness and supporting ratio,and how to choose microscopic parameter to evaluate the surface quality correctly.It made some typical automotive parts surface dimensioning as examples to explain meanings of these parameters and how to dimensioning in product development,process modification and production quality control.