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A tool clamping device for a tool having a shaft which is accurate to size and which can be inserted into the receiving bore of a tool support, is provided with a clamping device which can be screwed on a screw thread of the tool support while the tool has a ring, which is arranged radially protrudi

A tool clamping device for a tool having a shaft which is accurate to size and which can be inserted into the receiving bore of a tool support, is provided with a clamping device which can be screwed on a screw thread of the tool support while the tool has a ring, which is arranged radially protruding in a clamping area. The ring extends in the circumferential direction and, with the shaft of the tool inserted into the receiving bore, the clamping device is axially supported against the ring (FIG. 2).

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1. A tool clamping device; comprising:a tool support means (2), containing a tool receiver (4) including a receiving bore (5),a tool means (7, 7a) with a shaft (6) having a center axis (10), which can be inserted into the receiving bore (5) wherein the receiving bore (5) has a cross section extendin

1. A tool clamping device; comprising:a tool support means (2), containing a tool receiver (4) including a receiving bore (5),a tool means (7, 7a) with a shaft (6) having a center axis (10), which can be inserted into the receiving bore (5) wherein the receiving bore (5) has a cross section extending at a right angle to the shaft center axis (10), wherein the tool means shaft (6) has a cross section matching the cross section of the bore (5), wherein the shaft (6) when inserted into the receiving bore (5) is in contact with the bore (5) at close tolerance, andthe tool means including a cylindrical section (8) which extends at a right angle with respect to the shaft center axis (10) in a circumferential direction, wherein the tool support means (2) has an end face (12), wherein the cylindrical section (8) has an end face (11) and wherein the end face (11) of the cylindrical section and the end face (12) of the tool support means are in contact without play when the shaft (6) is inserted into the receiving bore (5);the cylindrical section (8) further including clamping grooves (9) circumscribing the cylindrical section (8) at right angles with respect to the shaft center axis (10);a ring (14) circumscribing the cylindrical section (8) at right angles with respect to the shaft center axis (10), and engaging the clamping grooves (9);a clamping device, having clamping means (17, 67, 68), which can be directly or indirectly fastened in place on the tool support means (2), andwherein the ring (14) radially protrudes past the tool means in a clamping area and extends in the circumferential direction with respect to the shaft center axis (10) and wherein the clamping means (17, 67, 68) are fastened in place on the tool support means on the ring and are (2) axially supported when the shaft (6) has been inserted into the receiving bore (5).2. The tool clamping device in accordance with claim 1, characterized in that the ring is a split ring (14).3. The tool clamping device in accordance with claim 2, characterized in that the tool means (7) is a tool quick-action change insert wherein the split ring (14) inserted into the clamping grooves (9) is fixed in place by attaching a round cord ring (16).4. The tool clamping device in accordance with claim 1, characterized in that with the shaft (6) inserted into the receiving bore (5), the clamping means (17, 67, 68) can be actuated from the side of the tool support means (2), which faces the tool means (7, 7a).5. The tool clamping device in accordance with claim 1 characterized in that detent means (13, 23, 72), which become effective when the clamping means are released, are assigned to the clamping means (17, 67, 68), by means of which the tool means (7, 7a) can be pulled out of the tool receiver (4) by actuating the clamping means in the release direction.6. The tool clamping device in accordance with claim 1, characterized in that the receiving bore of the tool receiver is embodied as a tapering bore (28), which is equipped for receiving a collet chuck.7. The tool clamping device in accordance with claim 1, characterized in that the tool support means (2) have a tool clamping insert (26), which is connected with the tool support means and contains the tool receiver (4).8. The tool clamping device in accordance with claim 7, characterized in that the clamping means are fastened in place on the tool clamping insert (26).9. The tool clamping device in accordance with claim 7, characterized in that the tool receiver (4), formed on the tool clamping insert, contains the receiving bore, which is equipped as a tapered bore for receiving a collet chuck.10. The tool clamping device in accordance with claim 1, characterized in that the clamping means have a tensioning nut (17), which can be screwed onto a screw thread (18) of the tool support means (2), or of an element (26) connected therewith.11. The tool clamping device in accordance with claim 10, characterized in that the tensioning nut (17) is maintained, secure against loss, on the tool means (7, 7a).12. The tool clamping device in accordance with claim 10, characterized in that the tensioning nut (17) is a cap nut.13. The tool clamping device in accordance with claim 12, characterized in that the tensioning nut (17) is maintained between the ring (14) and axial detent means (13, 23) on the tool means (7, 7a) or on the screw thread (18).14. The tool clamping device in accordance with claim 1, characterized in that the clamping means have clamping elements (67, 68) acting on the ring (14), which are seated radially movable in a restricted manner and can be clamped against the ring (14) of the tool support means in the axial direction.15. The tool clamping device in accordance with claim 14, characterized in that the clamping elements are connected, radially movable in a restricted manner, with a clamping body (50), which is seated, axially displaceable, on the tool support means of an element (49) connected therewith, and to which actuating means are assigned, which are accessible from the exterior and generate an axial movement.16. The tool clamping device in accordance with claim 15, characterized in that the actuating means contain two eccentric drive mechanisms (61, 66), which are arranged opposite each other.17. The tool clamping device in accordance with claim 1, including a hooked wrench (39) and characterized in that the tool support means (2) have on their circumference at least one recess (36, 38), to which the hooked wrench (39) can be applied, wherein the hooked wrench (39) has an essentially L-shaped form with two legs (40), which extend at right angles to each other, each of the legs (40) has at its end an inwardly oriented pin (41) acting as a blocking element, and wherein the wrench (39) also includes an elongated hole (42) provided symmetrically between the two legs (40), whose longitudinally axis rests on a median line (43) of the angle enclosed by the two legs (40), the hooked wrench (39) is placed with the elongated hole (42) on a bearing bolt (44) screwed into a housing (1), which housing houses tool support means (2), and wherein one of the pin (41) engages a recess (36, 38) of said at least one recess and the other pin (41) of the other leg (40) is maintained out of contact with a recess of said least one recess.