目前情况一、生产概况 1.产品精度:根据产品的精度,大多数採用ＯＣＴ2级和3级精度;轴孔之配合,极个别的 用1级精度。 表面光洁度,一般 用7～9级,在液压系统的部件中均 用。但亦有个别零件如主轴及油路中的活塞等要求在10级以上。齿轮的精度为гOCT 3、2级。 2.工具精度: 工具精 The current situation I. Production Overview 1. Product accuracy: According to the accuracy of the product, most of the OCT2 level and 3-level accuracy; axis with the hole, a very few with a precision. Surface finish, generally with 7 to 9, are used in the hydraulic system components. But there are also some parts such as the main shaft and oil in the piston requirements of 10 or more. Gear accuracy гOCT 3,2 level. 2. Tool accuracy: fine tools