A NEW TYPE OF THE MECHANISM OF A MECHANICAL PRESS WITHLOW-SPEED FORGING-STAMPING AND QUICK-RETURN MOTION ANDNUMERICAL SIMULATION FOR ITS DYNAMIC CHARACTERISTICS

摘要

On the basis of analyzing the existing deficiencies of the crank slide mechanism of the present universalmechanical press, the necessary of developing the new type of mechanism with low-speed forging-stamping and quickreturn motion is definitely pointed out. Furthermore, methods of realizing low-speed forging-stamping properties areanalyzed and obtained, and the three goals of evaluating the characteristics are put forward. The low-speed andquick-return mechanisms are divided into two kinds, and the principle of the two kinds of mechanisms has beenexpounded. In the light of analyzing disadvantages of the present mechanical press’s low-speed and quick-returnmechanis ms, a new type of the low-speed mechanism is proposed. The non-linear motion equations of the newmechanism are established by means of vector method, and resolved with commercial Matlab soft. The kinematicalcharacteristics of the new mechanism are theoretically explained and numerically simulated. The results show that thenew mechanism possesses good characteristics of low-speed forging-stamping quick-return, it deserve to be popularizedand applied in the industry practical production.