DEVICE FOR CONTROLLING DELAYED-TIMING CONNECTION BETWEEN TWO PRESSURE MEDIUM IMPACT TYPE COLLECTIVE MACHINES AND ONE PRESURE MEDIUM SOURCE

摘要

PROBLEM TO BE SOLVED: To provide a device for controlling delayed-timing connection between two pressure medium impact type collective machines and one pressure medium source, having simple construction for achieving high accuracy.;SOLUTION: The device comprises a main control valve 21 having an inlet 22 connected to the pressure medium source and outlets 23, 24 assigned to the collective machines to which impact is granted. A pressure chamber 62 uses medium held ready at the inlet 22 for granting impact thereto or releasing load thereon through a flow path 67 located in a casing 25 passing via a pilot control valve 43 operable in response to at least one supplied control signal. At least one control means has a moving piston 63 for defining the pressure chamber 62 and operating on a main valve slide 26. The effective piston area of the moving piston 63 is smaller than the opposite front face of the main control slide 26.;COPYRIGHT: (C)2005,JPO&NCIPI