我厂试制的165F 型柴油机自1970年投产以来,对曲轴箱的加工已设计制造了二台专用镗床和二台专用铣床,但是箱体上还有36个孔位在通用钻床上加工,花费工时既多,质量又不能保证。为了改变曲轴箱生产线上这种不相适应的情况,于1973年又设计制造成二台曲轴箱专用多头钻床。该钻床投产以来,使用情况良好,功效提高二十倍左右。 Since the 165F diesel engine piloted in our factory has been put into production since 1970, two special boring machines and two special milling machines have been designed and manufactured for the crankcase processing. However, there are 36 holes in the box which are processed on the universal drilling machine, More than that, quality can not be guaranteed. In order to change the crankcase production line this does not adapt to the situation, in 1973 and designed into two crankshaft for drilling. The drilling machine put into operation, the use of good, the efficiency of about 20 times.