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1 引言可转位车拉刀具有加工效率高、加工质量好、刀具寿命长、换刀和调刀方便等优点 ,是目前汽车曲轴粗加工首选的先进刀具。我国汽车行业所用车拉刀长期依赖进口 ,由于价格昂贵 ,大大增加了曲轴的加工成本。为了实现可转位车拉刀的国产化 ,近年来国内多家企业相继开发了车拉
1 Introduction The indexable car broach has the advantages of high processing efficiency, good processing quality, long tool life, convenient tool change and knife adjustment, and is the advanced tool preferred by the automobile crankshaft roughing. China’s car industry used car broach long-term dependence on imports, due to expensive, greatly increasing the cost of crankshaft processing. In order to realize the localization of broach broach, in recent years, many domestic enterprises have developed a car pull