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Filing date
Publication date
Application filedfiledCritical
Priority to JP322291UpriorityCriticalpatent/JP2543522Y2/ja
Publication of JPH0498972UpublicationCriticalpatent/JPH0498972U/ja
Application grantedgrantedCritical
Publication of JP2543522Y2publicationCriticalpatent/JP2543522Y2/ja
B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21D28/00—Shaping by press-cutting; Perforating
B21D28/002—Drive of the tools
B—PERFORMING OPERATIONS; TRANSPORTING
B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
B23D15/12—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
B23D15/14—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure
B—PERFORMING OPERATIONS; TRANSPORTING
B30—PRESSES
B30B—PRESSES IN GENERAL
B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
B30B15/16—Control arrangements for fluid-driven presses
B30B15/18—Control arrangements for fluid-driven presses controlling the reciprocating motion of the ram