DESIGN OF THE MAIN WORKING MECHANISM OF A CRANK PRESS BASED ON PLAIN HIGH CLASS LINKAGES

Abstract

At present, crank presses with a main working mechanism (MWM) based on flat lever mechanisms of the second class are widely used for stamping products. A big problem with such MWM presses is the misalignment of the slider under the influence of an eccentric application of deforming force. Misalignments of the MWM crank press slider reduce the stamping accuracy and cause it to jam and lead to its breakage. In the paper to eliminate these problems it is proposed to use high-class plain linkages for the design of MWM crank presses. Diagrams of class IV plain linkages were obtained for the design of new MWMs of crank presses. A new MWM for a crank press was 
developed on the basis of a class IV linkage and its prototype was made. The prototype of a new MWM of a crank press was tested.