为了提高加工孔的质量,我厂采用了球形压刀压孔。先设计了一个Ф52的球形压刀(图1)。材料是高速钢(P18)制成的,硬度力Rc=62-64,球形压刀的有效工作部分为7公厘。工作部分的光洁度需达9-10级,其他部分不要很高的光洁度。试用结果完全符合质量要求。 在设计压刀时,节约了高速钢材 In order to improve the quality of the hole processing, I plant a spherical pressure knife hole. First designed a spherical ball pressure Ф52 knife (Figure 1). The material is made of high-speed steel (P18), the hardness Rc = 62-64, the effective working part of the spherical pressure knife is 7 mm. The finish of the working part needs to reach 9-10 grades, other parts do not have very high finish. Trial results in full compliance with quality requirements. In the design of pressure knife, saving high-speed steel