High – speed punch operating inertia force

When the inertia force generated by the crank slider mechanism is much larger than that of the conventional punching machine, the high-speed punching machine operates so that the high-speed punching machine generates vibration noise pollution and reduces the forming precision of the stamped parts. Therefore, the high-speed punch inertial force balance is very important.

After careful study found that Jinde in the slider rail vertical force and horizontal force and force on the crankshaft bearing end performance is the high-speed press punch inertia force generated vibration. In general, the inertial force amplitude than the slider weight 20 times, so the punch vertical inertia force is greater than the total weight of the punch, so the large inertia force, the normal stamping production punch can have a very serious impact.

In order to reduce the inertia force, increase the inertial force balance effect, reduce the quality of rotating parts and reciprocating motion. Since the high-speed reciprocating slide block is the main source of inertial force, the slider mass design is as small as possible while ensuring strength. The dynamic balance device adopts advanced, adjustable, easy to maintain four points.

Due to the inertia force of the high-speed punch too, it’s too large, the slider speed is too high, the pneumatic seal can not afford, the upper and lower chambers of the dynamic balancing cylinder need frequent exhaust, no suitable pneumatic valve to meet the fast Switching frequency, therefore, the inertial force balance method can not be used for high-speed presses.

The inertia force of the crank slider mechanism consists of three parts: the centrifugal inertia force generated by the rotation of the crankshaft, the reciprocating inertia force generated by the reciprocating motion of the sliding block and the inertia force generated by the planar motion of the connecting rod. The inertial forces generated by the plane motion of the connecting rods are the most complex. This project converted the mass equivalent to the hinge point of the connecting rod and the crank pin according to the static equivalent condition using a double mass substitution method, and then combined the rotary inertia force with the crankshaft. In addition, the project is also equipped with a special dynamic vibration protection device, combined with spring to prevent vibration of the news.

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