北京摩擦材料厂委托我厂加工的切割件是波音707的动盘骨架和精、粗轧机的外摩擦片,共精切700多件。此零件的外形、技术条件等如图1、图2、图3所示。这三种零件的切割特点如下:1.材料薄:料厚δ=7毫米和10毫米;2.切割面积大:直径为457毫米和380毫米;3.形状较复杂:内外圆都带有键和槽; Beijing Friction Material Factory commissioned I plant processing of the cutting pieces of the Boeing 707 dynamic disk skeleton and fine, rough rolling mill outer friction plates, a total of more than 700 pieces of fine. This part shape, technical conditions, such as Figure 1, Figure 2, Figure 3 shows. The cutting characteristics of these three parts are as follows: 1. Material thin: material thickness δ = 7 mm and 10 mm; 2. Cutting area: diameter 457 mm and 380 mm; 3. Complex shape: And trough;