Drift reamer

Abstract

The invention discloses a drift reamer which comprises tool bid matrixes, first tool bodies, second tool bodies, a connecting arc body, a tool bit, a plurality of heat-dissipating ports, a protectingrod, a connecting rod, a plurality of stable grooves, a knife handle, a heat-dissipating hole and an anti-slide cover. The drift reamer disclosed by the invention has the beneficial effects that the four first and second tool bodies are arranged in a stepped manner; a hole is processed in many sections through two cutting faces, so that the cutting quantity is increased gradually, and the inner wall of the processed hole is smoother; the plurality of heat-dissipating ports are uniformly formed in the tool bid matrixes between adjacent first tool bodies and adjacent second tool bodies, so thatthe phenomenon that the reamer is too high in temperature in the processing course; the protecting rod is of a circular truncated cone shape, and the lower end of the protecting rod leans against theupper end of the second tool body, so that the second tool bodies can be supported to a certain extent; and the plurality of stable grooves formed in the connecting rod are formed asymmetrically, so that resonance of the reamer in high speed rotation is avoided.

Description

technical field [0001] The invention relates to a reamer, in particular to a punch reamer, which belongs to the field of mechanical processing equipment. Background technique [0002] A reamer is a rotary tool with one or more teeth, which is used to cut off the thin metal layer on the machined surface of the hole. The reamer is mainly used for reaming or repairing holes. It can be operated manually or installed on a drilling machine. The existing reamer The knives are all symmetrically distributed, so resonance is formed during the rotating cutting process, which is easy to cause the reamer to break. The existing reamers are mainly divided into straight grooves and spiral grooves. During the processing, there are processing residues such as favorable angles and rolling burrs. , it is easy to generate debris and cause adverse effects. Since the reamer needs to rotate at a high speed during use, it will generate high temperature when it contacts the workpiece. The existing re...

AI Technical Summary

Problems solved by technology

[0002] A reamer is a rotary tool with one or more cutter teeth, which is used to cut off the thin metal layer on the machined surface of the hole. The reamer is mainly used for reaming or repairing holes. It can be operated manually or installed on a drilling machine. The existing reamer The knives are all symmetrically distributed, so resonance is formed during the rotating cutting process, which is easy to cause the reamer to break. The existing reamers are mainly divided into straight grooves and spiral grooves. During the processing, there are processing residues such as favorable angles and rolling burrs. , it is easy to generate debris and cause adverse effects. Since the reamer needs to rotate at a high speed during use, it will generate high temperature when it contacts the workpiece. The existing reamer cannot effectively cool down, so that the reamer can only be used all the time. Maintaining high temperature operation will not only make the processing effect not good, but also reduce the service life of the reamer

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