Boring cutter with chip breaker groove for machining conduit hole

Abstract

The invention discloses a boring cutter with a chip breaker groove for machining a conduit hole. The cutter comprises a cutter body, wherein the upper surface of the cutter body is provided with a cutting part which totally covers the upper surface of the cutter body; two ends of the cutting part are provided with a cutting blade respectively; and the upper surface of the cutting part is providedwith a chip breaker groove along the length direction of the cutting part on the inside of the cutting blade. The cutting part is totally arranged on the surface of the cutter body, the joint surfaceof the cutting part and the cutter body is enlarged, so the strength of the cutting part is improved, and the stability is improved; moreover, two ends of the cutting part are provided with a cuttingblade respectively, so the cutting blade at two front and rear ends of the boring cutter can be exchanged, and the service life of the boring cutter is greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of machining and manufacturing, and in particular relates to a boring tool with a chip breaker for machining conduit holes. Background technique [0002] As the main key component of the engine, the cylinder head is usually made of cast iron and covered with a layer of aluminum material to achieve the purpose of heat dissipation. With the development of material technology, the overall aluminum cylinder head is generally made of cast aluminum alloy and cast aluminum alloy. As a new type of high specific strength material, it has been paid more and more attention in mechanical manufacturing. At present, the machining tools used to process the conduit hole of the cylinder head of the automobile engine adopt a multi-blade compound (knife-edge machine clamp, inlaid welding combination) structure, and use reaming, boring, and extrusion instead of grinding. Since the conduit hole belongs to deep hole processing, ...

AI Technical Summary

Problems solved by technology

like figure 1 , figure 2 and image 3 As shown, the existing boring tool with a chip breaker for machining conduit holes includes a cutter body 1 and a cutting part 2 welded on the upper surface of the front end of the cutter body 1, that is, has a single cutting edge, and the cutting part 2 is made of integral hard It is made of alloy or polycrystalline diamond (PCD) material, in which the range of hard alloy processing materials is limited and the machining accuracy and cutting speed are too low, the service life of cemented carbide material is low, and the processing efficiency is low. Polycrystalline diamond (PCD) material can be Realize high-speed and high-precision machining, but due to welding instability in the welding process, the cutting strength of polycrystalline diamond (PCD) is not enough, the stability is poor, and the service life is reduced

In addition, the surface of the cutter body 1 is horizontal and smooth, and the tightness between the pressure plate on the machine tool and the cutter body is not high. During processing, the part size error or the surface processing accuracy will be reduced due to the unstable clamping of the cutter body.

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