Grooving insert and cutting tool

Abstract

The invention discloses a groove machining blade and a cutting tool. The blade includes an upper positioning surface, a lower positioning surface, two side surfaces and two end surfaces. At least one end of the blade is provided with a main cutting unit, and the main cutting unit is located on the upper positioning surface and the end surface. At the intersection of the main cutting unit, the main cutting unit extends to the sides, one of which is provided with a first cutting unit for auxiliary cutting, and the other side is provided with a second cutting unit for auxiliary cutting, the first cutting unit and the second cutting unit The cutting width between the units is greater than or equal to the cutting width of the main cutting unit. The tool includes a cutter body, and the cutting tool also includes the above-mentioned grooving blade. The cutter body is provided with a clamping portion, and the clamping portion is provided with a groove. The blade is installed in the groove and clamped by the clamping portion. The invention has good groove processing surface quality, improves cutting rigidity of the blade, greatly reduces cutting vibration, improves cutting stability and service life of the blade.

Description

technical field [0001] The invention relates to a metal cutting tool, in particular to a grooving insert and a cutting tool. Background technique [0002] The positioning of the grooving insert in the up and down direction is realized by the upper and lower locating surfaces of the insert. The upper and lower locating surfaces of the insert are usually designed as a pair of concave surfaces, which are used in conjunction with the corresponding convex locating surfaces of the cutter body for the grooving insert. , Down direction positioning. The grooving process generally has the characteristics of large cutting depth and narrow grooving width, so the slit positioning platform of the clamping blade is generally thin, the positioning rigidity is generally poor, cutting vibration is prone to occur during cutting, and the processed surface quality is not ideal. Grooving inserts mainly have two structures: double cutting part and single cutting part. The grooving insert with do...

AI Technical Summary

Problems solved by technology

The grooving insert with double cutting parts has front and rear cutting parts so that it can be turned around and installed twice. The single-head grooving insert can only be installed and used once because it only has a single cutting part. Generally, it has front and rear cutting parts. When the grooving insert is installed on the tool holder and used, the front cutting part first cuts into the workpiece, and the rear cutting edge will form secondary processing on the machined surface to form surface interference, which greatly reduces the quality of the machined surface, so it has the advantages of front and rear double cutting parts Grooving inserts can only be used for cutting conditions with small grooving depths. For cutting conditions with large grooving depths, generally only single-head grooving cutters with a single cutting part can be used.

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