Abstract: When used as holder for tools for partial machining tasks or as clamping means for exchangeable tools, the clamping block for clamping workpieces or tools make it possible to carry out a rapid and precisely reproducible exchange of the object (7) to be clamped. The clamping block having a block base (1) and a clamping jaw (5) which can be displaced relative thereto comprises a fixed clamping jaw (3) and means (4, 4.2) for the at least approximately parallel guidance of the moveable clamping jaw (5) relative to the block base. The latter has an essentially L-shaped form with two legs (1.1, 1.2) of approximately equal length. One of these carries the fixed clamping jaw (3) and a nose-shaped supporting portion (4) having a wedge-shaped control surface (4.2) for the moveable clamping jaw (5) while the other has a table-shaped portion (8) on which means for lateral and transverse guidance of the moveable clamping jaw (5) are supported.

Abstract: The quick-acting clamping device for clamping preferably identically shaped workpieces has a base part (1) comprising an elongate yoke plate (2) and a fixed jaw (3) at each of the end faces. Into a longitudinally oriented guide slot (6) in the base part (1) is inserted a clamping block (7) which is longitudinally displaceable between the jaws (3), can be locked on the base part (1) at any desired point in the displacement range by means of a set screw (36) and has a side part on which a clamping head (8), held by means of a connecting link guide, is longitudinally displaceably mounted. The clamping head (8) can be moved in the clamping direction (C) towards a jaw (3) by means of an excentric part (22) rotatably mounted in the slide part in order to hold the workpiece.