The invention discloses a
servo main transmission device for a novel
numerical control turret punch press, and relates to a
punch press, in particular to a multi-die head
numerical control machining punch press. The
servo main transmission device can adapt to production enterprises of various large scales, has high control precision, high capacity ratio and high
station number expansion flexibility. The punch press comprises a controller, a
machine body and a
punching head, wherein the
punching head is connected with the
machine body through a positive-negative screw drive mechanism; the positive-negative screw drive mechanism comprises a screw, a first nut, a second nut, a first
drive motor and a second
drive motor, wherein the screw is provided with a positive thread and a negative thread; the first nut and the second nut are respectively connected with the positive thread and the negative thread movably; the first
drive motor and the second drive
motor drive the first nut and the second nut to perform forward and reverse rotation; the
punching head is fixed to the bottom end of the screw; the first nut and the second nut are connected with the
machine body movably; only the rotation freedom degrees of the first nut and the second nut around the axes per se are remained; and the first drive motor and the second drive motor are respectively connected with the controller. In the
servo main transmission device for the novel
numerical control turret punch press, the structure is simple, a
servo control ratio mechanism is simple and is easy to realize, the precision is high, the device has no eccentric
inertia load, the problem about
dynamic balance does not needs to be considered, the running is balance, and the vibration is small.