Means for preventing tools from being pulled out from tool holders with a tool holding fixture

Abstract

The present invention relates to a cutter holding device which is provided with a cutter receiving part, especially a clamping disc, such as a thermal shrinking chuck, a nipper chuck, a hydraulic expanding chuck and a high-precision chuck. The handle of cutter, especially the handle of rotating cutter is accommodated in the cutter receiving part, wherein the cutter holding device comprises a pulling-out preventing fixing device which fixes the cutter and prevents the axial pulling-out. The pulling-out preventing device comprises at least one fixing component and at least one fixing groove which is corresponding with the fixing component and accommodates the fixing component. The fixing component cooperates with the fixing groove with a mode of forming locking. According to the invention, the fixing component and the fixing groove are all designed to at least partial sphere-head shaped. Preferably the cutter is provided with the locking groove. As the fixing groove is preferably spirally rotating along the cylindrical handle of cutter, the rotation direction is corresponding with the slotting direction of cutter, and axial fixing can be executed to the cutter. Thereby the cutter will not be axially pulled out from the cutter holding device in the running period. A component for exerting force is additionally installed. The component forms a gapless attachment on the pulling-out preventing fixing device after shrinking and installation.

Description

technical field [0001] The invention relates to a tool holding device according to the preamble of claim 1 with a tool receptacle, in particular a shrink chuck or other chuck for receiving a rotating tool. Background technique [0002] Various forms of tool holding devices with chucks, in particular shrink chucks, are known. The tool holding device is used for clamping tubular tools, turning tools, milling tools, reaming tools, grinding tools etc. by means of thermally induced shrinkage processes. Usually such shrink chucks are heated thermally by means of an induction shrinking device, whereby the inner diameter of the shrink chuck expands. When the inner diameter is enlarged, put the tool to be clamped into the heat-shrinkable chuck, and at the same time, the ratio of the inner diameter of the heat-shrinkable chuck to the shank diameter of the tool is designed so that after the heat-shrinkable chuck cools down, the tool Clamped against torque by shrink chucks. [0003] ...

AI Technical Summary

Problems solved by technology

Due to this unfavorable effect, workpieces cannot be machined precisely and to size specifications

In addition, twisting of the rotating tool in the workpiece or even in the clamping disk receiving the workpiece can lead to dang

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