Indexable cutting blade for metal material cutting machining

Abstract

The invention discloses an indexable cutting blade for metal material cutting machining. The indexable cutting blade comprises a blade body in a polygonal shape; cutting edges are formed at the intersections between an upper surface as well as a lower surface and side surfaces; in the upper surface and the lower surface, each cutting edge extends inwards to be provided with a front cutter surface;in each corner part of the blade body, each cutting edge comprises an arc-shaped angle blade at the position of a knife point and side edges arranged on the two sides of the arc-shaped angle blade; in the front cutter surface of the inner side of each knife point part, an overhanging boss is formed in a mode of being spaced from the cutting edge oppositely, and the boss is connected with a strip-shaped first protruding part towards the arc-shaped angle edge direction; and a concave part with a certain volume is formed between each first protruding part and the corresponding arc-shaped angle blade as well as the corresponding side edges, and is used for smoothly controlling chips under various conditions. The indexable cutting blade has the characteristics that the chips can be naturally bent in large, medium or small cutting depth ranges, so that the chips are more stably bent and discharged, the chip flow direction can be effectively controlled, and the cutting resistance can be reduced.

Description

technical field [0001] The invention relates to the technical field of metal cutting tools, in particular to an indexable cutting insert for cutting metal materials. Background technique [0002] In metal cutting process, especially in automatic production, chip control affects processing quality and processing efficiency. At the same time, the generation of chips during cutting, the cutting resistance generated by the friction between the tool and the workpiece, etc. may easily cause problems such as overloading of the cutting edge, increased tool wear, and deterioration of the surface quality of the workpiece. Therefore, in the metal cutting process, not only the chip control should be paid attention to in the design and development of the groove shape, but also the reduction of cutting resistance should be paid attention to to ensure a stable and controllable cutting process. [0003] In order to improve the chip breaking performance, in the prior art, when designing the...

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Problems solved by technology

[0003] In order to improve the chip breaking performance, in the prior art, when designing the groove shape, a plurality of protrusions are often arranged on the rake face of the cutting insert along the direction of the cutting edge, so as to control the formation and flow of chips. figure 1 It is a structural schematic diagram of a cutting edge portion of a cutting blade in the prior art, such as figure 1 As shown, the cutting insert 100 has a cutting edge 101 and a rake face 102, and the rake face of the cutting insert is provided with a plurality of protrusions 103 along the direction of the cutting edge. The protruding part increases the curling of the chip, and at the same time, due to the small chip space, it is easy to cause chip instability, and there are disadvantages such as a small depth of cut application range and excessive cutting resistance, which in turn affects the life of the tool and the stability of the chip breaking sex

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