Change The Width Of The Disc Shears High Strength Steel Shear Research

Cross section of roll forming products because of their good mechanical properties, are widely used in automotive、construction and various areas of daily life. Variable cross section shear is the first variable cross-section roll forming process.Disc shears are commonly used in industrial production sheet shearing equipment, with high production efficiency、stable quality and suitable for mass production. But the existing disc shears can not be achieved for any curve cut. New blanking processing methods, such as EDM、laser machining、wire cutting etc. are achieved for the shearing of an arbitrary curve, but the cost of production is too high. So the curve to change the width of the disc shears shear has important practical significance.The main criteria of the inspection shearing machine is the shearing quality whether good or bad. Upper and lower cutter lateral gap、overlap and shear rate are important factors to affect the shearing quality. This requires through finite element analysis to identify the relationship between the shear quality and various of factors, in order to guide the actual shearing process.This paper uses deform software to simulate and analyze the shear of high-strength steel. The appropriate value of the grid is divided in the2d and3d simulation analysis process. Analyze of the steel plate in the fracture process of stress and strain changes through the2d simulation analysis. In the process of Three-dimensional simulation, analyze the cutter head lateral gap, overlap, and shear rate on shear force, and obtain the best value of the shearing quality. Sheet of variable width cut of the discount curve, to find out to discounted shear angle of the best value and the curve cut the radius value. In the simulation process, whether can use a hexahedral mesh to shear or not has a certain help for the simulation analysis in the future.Through researching on the subject, it gives a better guidance on the processing of the plate curve and be able to cut out high-quality steel. As the cross-section roll forming’s first process, it is prepared for the roll forming working well.