DE3644444

PCT No. PCT/DE87/00552 Sec. 371 Date May 26, 1989 Sec. 102(e) Date May 26, 1989 PCT Filed Nov. 28, 1987 PCT Pub. No. WO88/04975 PCT Pub. Date Jul. 14, 1988.A clamping fixture for detachably fixing a disc-like tool to a spindle in cooperation with a tool-fixing member, and comprising a flange member for clamping the tool between the flange member and the tool-fixing member and a supporting element for attaching the flange member to the spindle in a torque-transmitting relationship and having an annular part, the flange member being axially and rotationally displaceable relative to said annular part, the annular part having a first end surface to be axially supported on the spindle and a second end surface and the flange member having an end surface bearing on the second end surface of the annular part with the second end surface of the annular part and the end surface of the flange member having a plurality of complementary sloping end surface portions inclined toward the spindle axis and defining a wedge angle having a size lying in a self-locking range, and the annular part including a plurality of stop surfaces extending substantially parallel to the spindle axis adjoining a respective sloping end surface portions of the second end surface at lower ends of thereof end portions and a plurality of drive surfaces extending parallel to respective stop surfaces in spaced relationship thereto and arranged in front of upper ends of respective sloping end portions of the second end surface, the flange member having a respective plurality of stop dogs defining locking surfaces engaging respective stop surfaces of the annular part upon the axial displacement of the flange member and relief of the clamping pressure, and a respective plurality of surfaces engageable by respective drive surfaces of the annular part when the tool is clamped between the flange member and the tool-fixing member.