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一、概述 由于滚动轴承的生产批量大,每年需消耗大量的轴承钢材,而采用留量小、尺寸与几何精度高的少无切削新工艺,对提高材料利用率却是有着重要意义,同时也是提高轴承寿命、减少车加工工时、实现下工序机械化及自动化生产的重要前提。 当前,国内小型轴承套圈的供坯方式主要有棒料车削、管料车削、热锻件和冷挤压件等几种。棒料车削的材料利用率仅18～26％,浪费严重。管料车削的材料利用率可达40～50％左右,车加工效率也比较高,
First, an overview Due to the production of large quantities of rolling bearings, the annual need to consume a large number of bearing steel, and the use of small reserves, the size and geometry of high precision cutting without cutting new technology to improve material utilization is of great significance, but also improve Bearing life, reduce vehicle working hours, to achieve the mechanization of the next process and an important prerequisite for automated production. At present, the domestic small bearing rings for the blanking mainly include bar turning, tube turning, hot forging and cold extrusion several. Material utilization of bar turning only 18 ~ 26%, serious waste. Tube material turning utilization of up to 40 ~ 50%, the car processing efficiency is relatively high,