Spiral and orderly arranging fiber tool capable of conducting positive rake angle machining and preparation method thereof

Abstract

The invention discloses a helically and orderly arranged fiber cutter capable of positive rake angle processing and a preparation method thereof. The fiber cutter includes fiber, carcass and steel matrix; the fiber is tangent to the base circle in the steel matrix, and the fiber can process the workpiece with a positive rake angle during cutting; Arranged in an orderly manner. The preparation method is as follows: the fiber is prepared by wire electric discharge cutting technology; the series of fibers are clamped and sharpened by special clamps; the matrix is ​​prepared on the prefabricated steel base by pressing and sintering technology; A series of small holes arranged in a helical line are processed on the body; epoxy resin is injected into the small holes, the fibers are inserted into the small holes, and the embracing device is used to ensure that the blade height of the fibers is consistent; the fiber cutter is prepared by heating and curing. The helical and orderly arranged fiber cutter prepared by the invention can realize positive rake angle processing, significantly reduce cutting force and cutting temperature, and improve cutting performance.

Description

technical field [0001] The invention relates to a cutting tool and a preparation method thereof, in particular to a helically arranged fiber cutting tool capable of positive rake angle processing and a preparation method thereof. Background technique [0002] Grinding is an important part of mechanical processing. It has the characteristics of high processing precision and good surface quality, and is suitable for precision manufacturing of hard, brittle and difficult-to-machine parts. However, in the traditional grinding process, the abrasive grains are arranged irregularly, and the shape of the abrasive grains is random. Therefore, in the grinding process, a single abrasive grain often cuts the surface of the workpiece with a large negative rake angle. It will lead to a large grinding force ratio, and most of the grinding energy will be converted into grinding heat and accumulate in the grinding area, resulting in high grinding temperature and fast wear of the grinding whe...

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Problems solved by technology

However, the fibers of the grinding wheel are processed with a zero rake angle when cutting the workpiece, which is different from turning, milling, planing and other tools that are processed with a positive rake angle; The helical line, the patent does not consider the problem that the residual material formed on the surface of the workpiece by the gap between two adjacent fibers during the grinding process is difficult to remove under the action of the subsequent fibers, resulting in a large surface roughness of the workpiece

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