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
B30B15/20—Control arrangements for fluid-driven presses controlling the reciprocating motion of the ram controlling the speed of the ram, e.g. the speed of the approach, pressing or return strokes