Separation type shearing knife

Abstract

The invention discloses a separating type shearing knife, and belongs to the technical field of metal cutting. A groove 7 is formed in the front surface of a knife rest, and a threaded hole is formed in the groove; an upper blade consists of 5-10 blade units, each blade unit is fixedly connected to the threaded hole in the groove through a bolt, and the 5-10 blade units are transversely and tightly arranged in the groove; a lower blade is fixedly connected to a front upper corner of the base; and a distance h12 between a perpendicular cutting edge of the lower blade and the back surface of the cutting edge of each blade unit is 2-4mm. According to the separating type shearing knife disclosed by the invention, the tip parts of the blade units are manufactured to be triangular, and the knife tips can effectively increase shearing penetrating capacity, so that the shearing resistance is reduced, and the efficiency is improved; meanwhile, each position of the knife body during shearing is different in stress impact, so that the invalid blade unit can be independently replaced when local blade unit is invalid, and therefore, the cost is reduced; and meanwhile, the combined type upper blade carries out transverse shearing motion, so that the roughness of a sheared surface of a sheared material is reduced, and processing precision is improved.

Description

technical field [0001] The invention belongs to the technical field of metal cutting, and in particular relates to a separate shearing knife. Background technique [0002] The shearing machine is the key equipment in the continuous rolling production line of the modern rolling mill. It is usually used for cutting the head, tail and cut-to-length of billets, slabs, steel plates and some strip steel products. In the processing of the steel industry, shearing machines are used more and more widely. From small crocodile shears with a shearing force of tens of thousands of cattle to medium and large portal shears with a shearing force of tens of thousands of cattle, there are various models and varieties. Mechanical cutting of various bars, bundles, components and pressed sheet materials to obtain steel materials of a certain size. [0003] In the shearing machine, the blade is the key component to achieve the final cutting purpose. Its quality and life will directly affect the ...

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Problems solved by technology

[0004] Therefore, how to reduce the consumption of blades and reduce production costs is very important for reducing consumption and increasing efficiency and improving economic benefits. Therefore, manufacturers and users, especially equipment manufacturers, attach great importance to the research and development of blades, so how to solve frequent blade The problem of huge consumption of replacement cost has become a research hotspot in engineering

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