Clamping device e.g. floating tensioner for clamping workpiece e.g. cylinder block of internal combustion engine, has screw portion that is axially displaced to workpiece support portion and is protruded and screwed to workpiece

摘要

The clamping device has a workpiece support portion that is moved axially and radially on a base portion (1). A screw portion is axially displaced to the workpiece support portion and is protruded and screwed to the workpiece. The workpiece support portion is set as a portion of plunger (3). The hydraulic medium is pressurized by a tensioning piston and is controlled by a clamping screw element (10).