Internal chip removal drilling cutter body with replaceable cutter head

Abstract

The invention discloses an internal chip removal drilling cutter body with a replaceable cutter head. The internal chip removal drilling cutter body comprises a drilling cutter body, wherein an alloycutter head is connected with the front end of the drilling tool body, and a chip removal groove extending to the alloy cutter head is formed in the outer wall of the drilling cutter body. A protective sleeve is connected with the outer part of the drilling a protective sleeve in a sleeving mode, and a chip removal space is enclosed between the protective sleeve and the chip removal groove of thedrilling cutter body. The front end of the protective sleeve extends and wraps the outside of the alloy cutter head, a distance is arranged in the front end of the protective sleeve and the front endof the alloy cutter head, the thickness of the sleeve wall of the section of the protective sleeve outside the alloy cutter head is 0.15-0.20mm, a chamfering structure is arranged on the inner wall ofthe protective sleeve at the rear end of the alloy cutter head, and the angle number of the chamfering structure is 3-15 degrees. The internal chip removal drilling cutter body with the replaceable cutter head has the beneficial effects of practicality, low production cost and novel structure, and friction caused by direct contact of scrap iron with the wall of a hole during drilling is avoided,the scrap iron cannot wear the wall of the hole, and thus the quality of drilling is improved.

Description

technical field [0001] The invention relates to a drill body, in particular to an internal chip removal drill body with a replaceable cutter head. Background technique [0002] During the process of machining holes on metal objects, a large amount of iron filings are generated. At present, drills with open chip removal grooves are often used. The processed inner hole wall space is squeezed out, and the iron filings have excessive friction on the hole wall, resulting in poor finish of the processed hole wall and affecting the quality of hole processing. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an internal chip removal drill body with a replaceable cutter head for the deficiencies of the prior art. [0004] In order to achieve the above object, the measures taken by the present invention: [0005] An internal chip removal drill body with a replaceable cutter head includes a drill body, an alloy cutter head...

AI Technical Summary

Problems solved by technology

[0002] During the process of machining holes on metal objects, a large amount of iron filings are generated. At present, drills with open chip removal grooves are often used. The processed inner hole wall space is squeezed out, and the iron filings have excessive friction on the hole wall, resulting in poor finish of the processed hole wall and affecting the quality of hole processing

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