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US 2014/0367929 A1Published application
Tool holder, collet and method to clamp a tool in a tool holder
OwnerUlrich Fahrioninventor
Life of this patent
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Abstract
A tool holder includes a collet clamped with a tool, a collet chuck connected to a power tool, and a clamping nut connecting the collet to the collet chuck. At least two groove-shaped material recesses are created in a body of the collet. The at least two recesses extend in a lengthwise direction of the collet body, and starting from an open circumferential surface of the collet body, extend in a radial direction up to a limit stop.
Claims18
A tool holder comprising:
- a collet configured to be clamped with a tool;
- a collet chuck connectable to a power tool;
- and
- a clamping nut connecting the collet to the collet chuck,
- wherein at least two groove-shaped material recesses are created in a body of the collet, the at least two recesses extending in a lengthwise direction of the body and, starting from an open circumferential surface of the body, extending in a radial direction up to a limit stop.
2 more elements
A method for clamping a tool in a tool holder comprising:
- providing a collet;
- expanding a tool socket of the collet;
- arranging a tool in the collet, the tool being securely held in the collet against slipping without being clamped;
- returning the collet to its previous shape, wherein when the collet is returned to its previous shape, an inner circumferential surface of the collet body contacts a shank surface of the tool;
- arranging the collet and the tool on a collet chuck;
- and
- screwing a clamping nut to the collet chuck,
- wherein when the clamping nut is screwed, the inner circumferential surface of the collet body is clamped to the shank surface of the tool, such that the clamping forces needed for machining a workpiece are only generated during the course of the clamping of the inner circumferential surface of the collet body to the shank surface of the tool and not when the inner circumferential surface of the collet body contacts the shank surface of the tool.
5 more elements
A collet configured to be clamped with a tool comprising:
- at least two groove-shaped material recesses created in a body of the collet, the at least two recesses extending in a lengthwise direction of the body and, starting from an open circumferential surface of the body, extending in a radial direction up to a limit stop.
Dependencies are inferred from the claim text.