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近年来，市场的需求变化，使产品更新换代的周期愈来愈短。曲轴已由过去的大批量单一生产逐步过渡到多品种、小批量生产。公司每年开发的新产品数量在8种以上，这样就需要准备较多的工装夹具，而一些夹具工装需要外协加工，容易延误时间，跟不上生产计划的要求，钻模就是其中的
In recent years, the market demand changes, the shorter the cycle of product replacement. Crankshaft from the past large quantities of single production gradually transition to more varieties, small batch production. The number of new products developed by the company is more than 8 kinds per year, so more fixturing tools are needed. Some fixturing tools need to be outsourced and processed, which is easy to delay the time and can not keep up with the production plan. Drilling is one of them