Clamping device for clamping workpieces

摘要

#CMT# #/CMT# The apparatus has a clamping body member (2) including a clamping chamber (8) with polygonal cross section, where the body member is adapted to receive a polygonal shaft (28) of a work piece. A reference surface (16a-18a) is provided on the body member for defining a position of the shaft which is clampingly retained in the clamping chamber in two directions. The reference surface has cylindrical stop pin members (16-18) provided in the clamping body member, where the stop pin members are made of a material that is harder than a clamping body member. #CMT#USE : #/CMT# Used for clampingly retaining a work piece (claimed) such as electrode for electro erosive machining, and in an operating region of a machine tool. #CMT#ADVANTAGE : #/CMT# The clamping body member is made of a material that is inexpensive, relatively light, and the stop pin members are made of a material that is harder than the material of the clamping body member, so that the clamping apparatus can be manufactured quickly, easily and at low costs. The work piece having flat lateral surfaces rests on the stop pin members along a line, thus providing high degree of immunity against contamination. The design configuration of the clamping apparatus thus allows work pieces and machining tools to be clampingly fixed in a well defined position, with high repetitional accuracy, in proper orientation and also in a reference oriented manner. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a perspective, partially sectioned view of a clamping apparatus. 1 : Clamping apparatus 2 : Clamping body member 3 : Screws 4 : Base plate 6 : Support pins 8 : Clamping chamber 16-18 : Stop pin members 16a-18a : Reference surface 27 : Work piece 28 : Shaft #CMT#INORGANIC CHEMISTRY : #/CMT# The clamping body member is made of aluminum. #CMT#METALLURGY : #/CMT# The stop pin members are made of hardened steel.