SCREW PRESS Russian patent published in 2002 - IPC

FIELD: mechanical engineering; applicable in designs of presses with screw actuating mechanism. SUBSTANCE: installed in bed guides is slide connected with screw non-self-braking mechanism. It is formed by nut and screw secured in slide. Screw end face carries disc with friction members fastened thereto. Driving flywheel connected with electric motor is installed coaxially to said screw. Working flywheel is located coaxially to driving flywheel for possible engagement which is realized by electromagnetic field set up by coils connected with DC source. Secured to working flywheel is cylinder with plunger engageable with disc frictional members. Return cylinders connected with slide are fastened to bed. Driving flywheel may be connected with electric motor by means of belt transmission. Coils may be installed on external side of working flywheel or on internal side of driving flywheel. EFFECT: higher reliability of press and its prevention against overloading. 4 cl, 1 dwg