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普通车床在半球面或大于半球面的零件加工中，用常规的加工方法，如用样板刀或手动车削球面，很难保证工件的尺寸精度和表面粗糙度。笔者在指导实习生车削大批量铸钢内外圆球密封件时，设计并使用了如图1所示的工艺装置，成功地解决了上述难题。为了简化本装配图的画法,支撑件1
Ordinary lathe in hemispherical or hemispherical surface of the parts processing, using conventional processing methods, such as using a model knife or manual turning the spherical surface, it is difficult to ensure the dimensional accuracy of the workpiece and surface roughness. The author in the guidance of in-depth large-scale cast steel turning ball seals, the design and use of the process shown in Figure 1, successfully solved the above problems. In order to simplify the drawing of the assembly drawing, the support 1