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我厂有一薄壁零件如图1所示,是一薄壁冲压件,只有1.9mm厚。其内槽宽度尺寸5.2_0~(+0.048)属IT10级精度、表面粗糙度为R_a3.2。为满足工艺要求,我们设计了如图2所示的推刀,进行推削,现介绍如下。 图2所示的推刀,在油压机Y30—2.5上使用推削加工零件。考虑到被加工零件是薄壁件、切削齿和校正齿均采用了斜齿。斜齿的角度为30°。原先的角度为25°,后使用中发现25°的推刀工作不太平稳,改为30°后,也就改变了推刀推削零件时的工作角度,而且自动
My factory has a thin-walled parts shown in Figure 1, is a thin-walled stamping parts, only 1.9mm thick. The width of the inner groove 5.2_0 ~ (+0.048) is IT10-level accuracy, surface roughness R_a3.2. To meet the technical requirements, we designed the push knife as shown in Figure 2, to push, are described below. The push knife shown in FIG. 2 uses a push-off machining part on the hydraulic press Y30-2.5. Considering that the parts to be machined are thin-walled parts, helical teeth are used for the cutting teeth and the correction teeth. Helical angle of 30 °. The original angle of 25 °, 25 ° after the use of the push knife to find work is not stable, to 30 °, it will change the pushing knife pushing parts work angle, and automatic