Machining tool for grooves with large depth-to-width ratios

Abstract

The invention belongs to the technical field of groove machining and particularly relates to a machining tool for grooves with large depth-to-width ratios. The machining tool comprises a tool apron, a tool body, a tool blade, bolts, a positioning pin and a compressed air hose, wherein the lower surface of the tool apron is provided with a plurality of bolt blind holes and a positioning pin blind hole, and connected with a machine tool; the tool body comprises a tool handle and a toolbar; the tool handle is provided with bolt through holes matched with the bolt blind holes and a positioning pin through hole matched with the positioning pin blind hole; the bolt through holes are arranged around the positioning pin through hole which is located in the center of the tool handle; an inner-cooling through hole which obliquely extends across the two sides of the tool handle is formed inside the tool handle; the two ends of the toolbar are connected with the tool handle and the tool blade correspondingly; and the length-width ratio of the toolbar is larger than 10 so as to machine grooves with large depth-to-width ratios. The tool is high in rigidity, the problem of tool chattering during machining of deep grooves is avoided, and chip removal is easy.

Description

technical field [0001] The invention belongs to the technical field of groove processing, and in particular relates to a processing tool for grooves with a large aspect ratio. Background technique [0002] During the processing of gas turbine and steam turbine parts, some parts need to be grooved on the inner or outer circle to install blades or ventilate. The usual groove shape of the blade is complex, but the depth is small, and the conventional groove cutter can meet the processing requirements. For grooves with a depth-to-width ratio of more than 10, conventional groove cutters have the following disadvantages: the length of the cutter is not enough, and it is easy to cause workpiece interference during processing; the rigidity of the cutter body is poor, the processing efficiency is low, and it is easy to cause chattering of the cutter and damage the quality of the processed surface; It is difficult to remove chips in deep grooves, and it is easy to cause iron filings ...

AI Technical Summary

Problems solved by technology

The usual blade groove has complex groove shape, but the depth is small, and conventional groove cutters can meet the processing requirements

For grooves with a depth-to-width ratio of more than 10, conventional groove cutters have the following disadvantages: the length of the cutter is not enough, and it is easy to cause workpiece interference during processing; the rigidity of the cutter body is poor, the processing efficiency is low, and it is easy to cause chattering of the cutter and damage the quality of the processed surface; It is difficult to remove chips in deep grooves, and it is easy to cause iron filings to squeeze and damage tools and workpieces

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