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用拉刀加工内孔,加工精度和生产效率都很高;所以它是近代工业中比较先进的一种工具,在工厂里应用很普遍。在通常情况下,用钝了的拉刀经过多次刃磨之后,往往使修整齿部分很快地变小,拉削出来的工件的内孔就不合技术要求,因而拉刀就报废了。拉刀的制造成本相当高;所以如何修复报废拉刀就真有很大的实际意义了。正当全国提出十五年内在主要工业产品产量方面赶上和超过英国的斗争目标后,我厂工具处施佩璋、梁金城等同志积极钻研业务,学习苏联先进经验,采用挤压法修复拉刀,延长了拉刀的使
With a broach hole machining, machining accuracy and production efficiency are high; so it is more advanced in modern industry, a tool used in the factory is very common. Under normal circumstances, with a blunt broach after many sharpening, often make the teeth part of the dressing quickly become smaller, broached out of the workpiece bore does not meet the technical requirements, so the broach scrapped. Broach manufacturing costs are very high; so how to repair scrap broaches really have great practical significance. Just as the country put forward the goal of catching up and surpassing the British struggle in the output of major industrial products in 15 years, the comrades Shi Peizhang, Liang Jincheng and other departments of our factory actively studied the business, learned the advanced experience of the Soviet Union, used the squeeze method to repair the broach, and extended Broach