Circular-shank tool comprising a tool holder
AssigneeBetek Bergbau- und Hartmetalltechnik Karl-Heinz Simon GmbH & Co. KG
InventorsKarl Kammerer, Bernhard Mossmann
Life of this patent
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Abstract
A circular-shank tool including a shank held in a bore of a tool holder by a locking sleeve, the shank being rotatably held in the locking sleeve. The locking sleeve has one or more retaining elements that project inwards and engage in a peripheral groove in the shank of the tool, thus indisplaceably securing the locking sleeve in an axial direction on the shank of the tool. Because the locking sleeve is mirror-symmetrical to the central transversal plane, the locking sleeve can be fixed to the shank in a position that is rotated through 180°.
Claims20
A round shank chisel (30) with a shank (31), wherein the shank (31) is rotatably maintained in a clamping sleeve (10), the clamping sleeve (10) has at least one inwardly projecting holding element (16, 17, 18) which engages a circumferential groove (39) cut into the shank (31) of the round shank chisel (30), the clamping sleeve (10) is fixed in an axial direction on the shank (31) of the round shank chisel (30) so that the clamping sleeve (10) cannot be shifted, each of the at least one holding element (16, 17, 18) is arranged in a center transverse plane (38) of the clamping sleeve (10) or a same axial distance from the center transverse plane (38), and the clamping sleeve (10) is attachable to the shank (31) of the round shank chisel (30) in two axial positions rotated by 180° around a longitudinal axis (19), and is selectively fixable in place in one of the two positions, the clamping sleeve comprising:
- the holding elements (16, 17, 18) spaced apart by two parallel punched edges (20, 21) oriented transversely with respect to the longitudinal axis (19) of the clamping sleeve (10) and are inwardly punched or pressed, and
- the punched edges (20, 21) extend over a portion of a circumference of the clamping sleeve (10) and have a distance from each other which is equal to or less than a width of the circumferential groove (39) in the shank (31) of the round shank chisel (30).
A clamping sleeve for a shank (31) of a round shank chisel (30), comprising:
- more than one inwardly projecting holding element (16, 17, 18) which engages a circumferential groove (39) cut into the shank (31) of the round shank chisel (30), wherein the clamping sleeve (10) is fixed in an axial direction on the shank (31) of the round shank chisel (30) so that the clamping sleeve (10) cannot be shifted, each of the more than one holding element (16, 17, 18) is arranged in a center transverse plane (38) of the clamping sleeve (10) or a same axial distance from the center transverse plane (38), and the clamping sleeve (10) is attachable to the shank (31) of the round shank chisel (30) in two axial positions rotated by 180° around a longitudinal axis (19), and is selectively fixable in place in one of the two positions;
- the more than one holding elements (16, 17, 18) formed between two parallel punched edges (20, 21) oriented transversely with respect to the longitudinal axis (19) of the clamping sleeve (10) and are inwardly punched or pressed, wherein the punched edges (20, 21) extend over a portion of a circumference of the clamping sleeve (10) and have a distance from each other which is equal to or less than a width of the circumferential groove (39) in the shank (31) of the round shank chisel (30).
Dependencies are inferred from the claim text.