Patent ID: 6370975
Filing Date: 2002-04-16
Classification: B23Q,F16H,Y10S,Y10T

Abstract:
An actuator comprising:a frame extending linearly for a predetermined length; a table block for displacement in an axial direction of said frame in response to operation of a rotating drive source; a ball screw for transmitting drive forces from said rotating drive source to said table block; a drive control block disposed on one end of said ball screw for controlling said drive forces transmitted from said rotating drive source to said ball screw; a cylinder disposed axially parallel to said ball screw, said cylinder having a piston coupled to said table block, wherein said cylinder is disposed outside of said frame, said cylinder having a piston rod coupled to said table block; and a non-flexible casing disposed outside of and alongside said frame, wherein said casing covers said piston rod during reciprocating movement thereof, said casing being stationary during said reciprocating movement.