Cutting segment, method of manufacturing cutting segment, and cutting tool

Abstract

Disclosed are: a cutting insert for a cutting tool for cutting or drilling brittle workpieces such as stone, brick, concrete and asphalt; a method of manufacturing the insert; and a cutting tool provided with the insert. The blade comprises: a plurality of plate-like metal matrix layers laminated perpendicularly to the cutting surface of the blade while being parallel to the cutting direction of the blade, the plate-like metal matrix layers are integrated with each other and made of iron or made of non-ferrous material; and diamond particle layers, which are arranged between the plate-shaped metal matrix layers, so that the diamond particles can be arranged in an array on the cutting surface. The insert has excellent cutting ability and can be manufactured through a simplified manufacturing process, thereby significantly reducing manufacturing costs.

Description

technical field [0001] The present invention relates to: a cutting insert for a cutting tool for cutting or drilling brittle workpieces such as stone, brick, concrete and asphalt; a method of manufacturing the insert; and a cutting tool including the insert. More specifically, the present invention relates to a cutting insert for a cutting tool using a plate-like metal base instead of a powdered metal base, a method of manufacturing the insert, and a cutting tool including the insert. Background technique [0002] In order to cut or drill brittle workpieces such as stone, brick, concrete and asphalt, it is necessary to provide abrasives whose hardness is higher than that of the workpiece. [0003] Synthetic diamond grains, natural diamond grains, boron nitride and cemented carbide are well known in the art as abrasives, and especially among these materials synthetic diamond grains are most widely used in the field of cutting tools. [0004] Synthetic diamond (hereinafter re...

AI Technical Summary

Problems solved by technology

In the process of compacting the metal matrix, since the compaction die is severely worn by the metal particles, there are often changes in the thickness of the matrix or fracture of the matrix, thereby reducing productivity

In addition, in severe cases, the size of the base body changes, so that these inserts have different sizes respectively, resulting in differences in performance and reduced performance of diamond tools

[0020] In addition, even though the metal powder used for the matrix can be manufactured by various methods using the same components, the manufacturing cost of the metal powder is significantly higher compared with metal blocks such as plates, rings, rods, etc.

[0021] In addition, when manufacturing the blade by the powder metallurgy method, a process for mixing diamond particles and metal powder, a process for compacting the mixture of diamond particles and metal powder into a predetermined compact, and a process for sintering the The process of compacting the piece, thereby complicating the manufacturing process

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