Nummerical control turret punch press toggle main driving device

The utility model provides a toggle main driving device of a numerical control turret punch press, comprising a servo motor, a crank, a connecting rod 1, a toggle 1, a toggle guide holder, the connecting rod 2, the toggle 3, a slider, a slider guide holder. The servo motor drives the toggle 1 move transversally via the crank and the connecting rod 1; under the action of the toggle 1, the connecting rod 2 makes the toggle 2 and the toggle 3 move with circular arc; the upper end of the toggle 2 is connected with punch press body via a movable joint thus incapable of moving up and down; the toggle 3 drive the slider move up and down along the slider guide holder; when the toggle 2 and the toggle 3 move onto an identical straight line, the slider is positioned on the extreme lower position; the sliding distance of the slider can be adjusted by adjusting the rotary angle of the servo motor, obtaining the purposes of adjustable frequency and stroke of the punched hole of the numerical control turret punch press. The utility model which is suitable for the numerical control turret punch press has the advantages of reasonable and simple structure, convenient use and maintenance, low manufacturing cost and adjustable frequency and stroke of the punched hole, etc.