论文部分内容阅读
在车床或磨床工作中,零件常常以内孔来定位。加工时非但精度要求较高,而且要保证被夹紧的表面不受损伤。为此,生产中常采用各种结构的内涨式弹簧夹头。本文介绍一种内涨式异径弹簧夹头,可用来加工各种内孔成阶梯形的零件, 这种夹头的结构如附图。弹簧夹4和5用У7A工具钢制成,其工作部分淬硬到R_C48～52,尾部淬硬到R_C30～32。圆锥角α=30°,这样能保证拆卸工件时弹簧夹不致卡住。弹簧夹的扩张量不应大于0.5毫米。
In lathe or grinder work, parts are often positioned with internal holes. Not only the processing accuracy requirements are high, but also to ensure that the clamped surface is not damaged. To this end, often used in the production of various structures within the up spring collet. This article describes an internal up spring reducer chuck can be used to process a variety of holes into a ladder-shaped parts, the structure of this chuck as shown in the accompanying drawings. Spring clips 4 and 5 are made of У7A tool steel, hardened to work part R_C48 ~ 52, the tail hardened to R_C30 ~ 32. Taper angle α = 30 °, this will ensure that when you remove the workpiece spring clip does not get stuck. The spring clip should not expand more than 0.5 mm.