Groove machining blade with double cutting units and cutting tool

Abstract

The invention discloses a groove machining blade with double cutting units and a cutting tool. The blade comprises an upper surface, a lower surface, two side surfaces and two end surfaces, wherein the two side surfaces are connected with the upper face and the lower surface, and the upper surface and the lower surface are symmetrical with respective to the side middle plane of the centers of the two side surfaces; the upper surface comprises an upper horizontal positioning surface, an upper vertical positioning surface and an upper transition surface positioned between the upper horizontal positioning surface and the upper vertical positioning surface, the lower surface is composed of a lower horizontal positioning surface, a lower vertical positioning surface and a lower transition surface positioned between the lower horizontal positioning surface and the lower vertical positioning surface; and a main cutting unit is arranged between the upper horizontal positioning surface and one end surface, and the main cutting unit is arranged between the upper vertical positioning surface and the other end surface, the two main cutting units are symmetrical with respective to the end middle plane in the center area of the two end surfaces, the upper horizontal positioning surface and the upper vertical positioning surface are symmetrical with respective to the end middle plane, the lower horizontal positioning surface and the lower vertical positioning surface are symmetric with respective to the end middle plane; and the cutter comprises the blade, the blade is elastically clamped in a cutter groove, other auxiliary fasteners are not needed, the installing and clamping is stable, and the cutter can be used twice.

Description

technical field [0001] The invention relates to the field of metal cutting, in particular to a grooving insert and a cutting tool with double cutting units. Background technique [0002] The positioning of the up and down direction of the grooving blade is realized by the upper and lower surfaces of the blade. The upper and lower surfaces of the blade are usually designed as a pair of concave surfaces, which cooperate with the corresponding convex positioning surfaces of the cutter body for the upper and lower grooving blades. Orientation. The slotting insert with double cutting unit mainly has a structure of double cutting part, which is installed twice and has good cost performance. This type of grooving insert with two cutting units generally forms the positioning structure of the insert through the upper, lower surface and end surface, and the upper and lower surfaces are arranged in parallel, and the upper surface can only be clamped by fasteners. Due to the existence...

AI Technical Summary

Problems solved by technology

This type of grooving insert with two cutting units generally forms the positioning structure of the insert through the upper, lower surface and end surface, and the upper and lower surfaces are arranged in parallel, and the upper surface can only be clamped by fasteners. Due to the existence of parts, this type of insert can only be used for shallow groove processing, and it is basically impossible to apply it to deep groove processing. Generally, deep groove processing can only be done by clamping the blade with an elastic clamping blade, thereby eliminating the need for fasteners. The impact on the depth of grooving, in order to maintain stable clamping, this type of grooving insert generally only has one cutting unit, and the cost performance is low

[0003] At the same time, the grooving process generally has the characteristics of large cutting depth and narrow grooving width, so the slit positioning platform for clamping the blade is generally thin, especially when the blade is overhanging long, the positioning rigidity is poor, and the cutting is prone to cutting vibration. In order to reduce vibration, ensure normal cutting of grooving inserts and maintain surface quality, the feed is usually reduced, resulting in low cutting efficiency

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