Patent ID: 6758467
Filing Date: 2004-07-06
Classification: B25B

Abstract:
A clamp system, for securing a workpiece, comprising:a base plate; a plurality of hydraulic clamping devices on said base plate; a first oil path formed in a wall of said base plate to supply a hydraulic pressure from a hydraulic pressure supplying means to each of said plurality hydraulic clamping devices; each of said hydraulic clamping devices including, a main cylinder unit disposed in said wall of said base plate and oriented along a thickness axis of said base plate, an output member including a piston rod extending from said main cylinder unit toward an outside of a surface of said base plate, a guide member disengageably secured to said surface of said base plate and guiding said piston rod to allow a forward and a backward motion, said guide member covering a major portion of said piston rod projecting out from said surface and not obstructing a clamp operation of said output member, a rod-side cylinder end wall of said main cylinder unit disengageably secured to said baseplate, wherein, said workpiece, clamped by said plurality of clamping devices, is supported from said base plate by a plurality of support devices; each of said support devices including a second main cylinder unit disposed in said wall of said base plate and oriented along a thickness axis of said base plate; a support member including a second piston rod extending from said second main cylinder unit toward said outside of said surface of said base plate; said base plate including a second oil path formed in said wall thereof to supply said hydraulic pressure from said hydraulic pressure supplying means to said second main cylinder units of said plurality of support devices and a hydraulic pressure booster means disposed on said base plate effective to increase said hydraulic pressure received from said hydraulic pressure supplying means and supplying said increased hydraulic pressure to said plurality of support devices via said second oil path.