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C616車床是一种高速車床,它的主軸箱与变速箱是分离式的,因此具有分离驅动的全部优点(这里从略)。但主軸的正反轉是由电动机的正反轉来实現的,当車削螺紋而需要經常正反轉时,就产生下列一些缺点: (1) 电动机由正轉到反轉的过程中載荷突增; (2) 反轉的突然冲击会使变速箱齿輪的寿命降低,甚至被打坏; (3) 正反轉是同轉速的,即进刀与退刀是同轉速的,故生产率低; (4) 当車削至螺紋根部时,操作者常使电动机处于点动状态,甚至1～2秒钟便点动一次,以期获得寸
The C616 lathe is a high-speed lathe, its headstock and gearbox are separate, and therefore has all the advantages of split drive (omitted here). However, the positive and negative spindle rotation is achieved by the positive and negative motor, when the turning thread and the need for regular positive and negative, it produces the following disadvantages: (1) the motor from forward to reverse the load suddenly (2) the sudden impact of reversal will reduce the life of the transmission gear, or even be broken; (3) positive and negative rotation is the same speed, that is, the feed and retract the same speed, so the low productivity; (4) when turning to the root of the thread, the operator often makes the motor in the state of jogging, or even 1 to 2 seconds, then move once in order to obtain inch