我们在C620数控车床的改造过程中,使用了DD-2型电动转位刀架,由于没有图纸及足够的技术资料,给调整、使用、维修等带来了一定的困难。同时,有些用户反应该刀架故障多,不易排除,工作不可靠,为此我们对DD-2型电动刀架进行了分析,在掌握了它的机械结构及工作原理后,认为该 We use the DD-2 electric indexing turret in the process of rebuilding the C620 CNC lathe. Because there is no drawing and enough technical information, it brings some difficulties in adjustment, use and maintenance. At the same time, some users respond to the fault of the tool holder more difficult to rule out, the work is not reliable, for which we have analyzed the DD-2 electric tool holder, mastered its mechanical structure and working principle, that the