Reaming honing cutter brazed with cubic boron nitride superhard abrasives for processing holes in materials difficult to process

Abstract

The invention discloses a brazed cubic boron nitride superhard abrasive reaming and honing tool for hole machining of difficult-to-machine materials, comprising: a cutter bar and a cutter base; a processing part and a guide part are arranged on the cutter base, wherein the The processing department is composed of cutting part, finishing part and retracting part. The present invention adopts the cubic boron nitride abrasive sequence arranged in a blade shape and brazed with the tool matrix, which improves the holding strength of the bonding agent on the abrasive grains, prevents the abrasive from falling off prematurely, prolongs the tool life, and improves the tool life at the same time. The designability of the blade structure; the use of upper / lower linear cutting edges and spirally distributed chip removal grooves enhances cooling, lubrication and chip removal, which can effectively reduce the grinding force and temperature, suppress the generation of surface defects, and prevent tool surface clogging, further extending tool life.

Description

technical field [0001] The invention belongs to the technical field of reaming and honing tools, in particular to a brazed cubic boron nitride superhard abrasive reaming and honing tool for machining holes in difficult-to-machine materials. Background technique [0002] High-strength and tough difficult-to-machine materials such as titanium alloys, high-temperature alloys, and stainless steels have a series of advantages such as high plasticity, good toughness, and high strength, and are more and more widely used in the aerospace field. They account for 55% to 65% and 25% to 40% of the total weight of the aero-engine respectively. A large number of precision holes are distributed on various parts of difficult-to-machine materials, such as assembly holes, air guide holes, valve sleeves, fuel nozzles, etc. of typical disk parts (compressor disks, turbine disks, etc.). With the continuous improvement of the requirements for the service performance and life of various aircraft,...

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Problems solved by technology

[0005] Aiming at the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a brazed cubic boron nitride superhard abrasive reaming and honing tool for hole machining of difficult-to-machine materials, so as to solve the problem that the electroplated reamer abrasive is easy to fall off and use Technical problems such as low life, and problems that limit its application in the field of precision machining of holes in difficult-to-machine materials

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