Impact-resistant spacer carbide saw and method of manufacture

Abstract

The invention relates to an impact-resistant interval hard alloy saw and a manufacturing method thereof. The saw is designed to solve the technical problems that according to existing similar products, blades are prone to being broken, the firmness is poor, production and machining are inconvenient and the scrap rate is too low. A body of the hard alloy saw is a spring steel sheet, tooth tips arearranged at the tip ends of sawteeth of the spring steel sheet, and the teeth are made of hard alloy. The saw is characterized in that the tooth tips are square hard alloy welding blocks with the length of 1-3 mm; each tooth tip is provided with a two-section integrated rear angle which warps upwards and outwards and a rake angle located at the tip of the rear angle, wherein the length of the rakeangle is 0.12-0.3 mm, and the bevel edges on the two sides of the rake angle also warp to be higher than side faces on the two sides; and the height difference between the tip ends of the rake anglesand the top plane of the sawteeth is 0.06-0.3 mm, the distance between the top plane and tooth roots of the sawteeth is 2-6 mm, the tip ends of the tooth tips of the spring steel sheet are at the same height, and the included angle e between the lower portions and the vertical line of the tooth roots of the sawteeth at a saw groove is 10-20 degrees.

Description

technical field [0001] The invention relates to a saw blade of a cemented carbide saw, which is an impact-resistant interval cemented carbide saw and a manufacturing method thereof. Background technique [0002] A saw is a tool used to cut wood, stone, steel, etc. It is generally made of spring steel sheets with sharp teeth on the edges; its main structural forms are band saw blades, circular saw blades and other structural forms. Some of the existing saw teeth adopt wider profile teeth and narrower profile teeth, such as the application number 201680024063.8 disclosed in the Chinese patent literature, the application publication date is 2018.01.02, and the invention name is "Card Clothing for Carding Machines and Carding Machines"; The sawtooth adopts unequal tooth pitch, unequal tooth height, unequal angle and the two groups of tips have a height difference of 0.1mm, such as the application number 201310197107.5 disclosed in the Chinese patent literature, the application p...

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Problems solved by technology

[0003] In order to overcome the above disadvantages, the purpose of the present invention is to provide the field with an impact-resistant spacer cemented carbide saw and its manufacturing method, aiming to solve the problem of easy chipping, poor firmness, inconvenient production and processing, and chip volume in existing similar products. too few technical issues

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