Analysis And Simulation Of The Stamping Die Design Based On DEFORM

In recent years, manufacturing industrial speedy development has promoted application of sheet metal stamping technologies. As parts manufactured by this technology have features of high efficiency and accurateness in dimensions, and the technology has wide advantages integrating economy, energy saving, consumption lowering and environmental protection, it has found wide application in parts processing, and we feel necessary to research this technology for better serving the manufacturing industry. Sheet stamping is a plastic processing of metal actually, it is a processing method by applying pressure to sheet metals via moulds loaded on press machines, to make it separated or become shaped, in order to get parts or workblanks of a certain shape, size and performance. The stamping processing method by using moulds to change flat workblank into open hollow parts is called deep drawing. The deep drawing is one of the main stamping procedures, widely used in our company. However, in actual stamping process, problems like ripping, cracks, damage in drawing, wrinkling, ellipse and buttering always happen, and affect quality of parts. For the reason and solution to the problems, experiences have been used always, and there are no theory study and system analysis, which makes technics arrangement and mould design have a certain defect. Under such background, the sheet metal simulation technology has emerged.This paper uses software DEFORM-3D to make digital simulation analysis for the bowl-shaped stiffeners, parts of deep drawing, which are the largest number of products appearing in workshops, to show the whole process of shaping, in order to expose the metal flow law, affect of various factors on the deformation, parts’ stress and strain distribution during the shaping, and gain results of velocity field, stress field, strain field and load field. Firstly the paper makes classifications for reasons of emergency of unqualified bowl-shaped stiffener products, to find out the main reasons are ripping, thinning of metal and buttering. Secondly, it uses SolidWorks2010 to design three-dimensional models, and introduces Deform for digital simulation, to make known the basic law for the shaping of bowl-shaped stiffeners. According to the simulation results of parts, male mould and female mould, the reasons for producing unqualified parts can be found. By analyzing the stress, strain, damage, velocity and loads, problems can be found visually. Finally, corrections are made for the technics and mould, to gain a relatively reasonable parts’ technics planning program and mould design data.By using DEFORM-3D software for assisting the design and analysis, mould trying time and mould costs can be saved, it can solve problems of ripping, thinning and buttering of bowl-shaped stiffeners in workshop to a certain degree, making it produced in batches well, and providing a basis for technics and mould design of punching parts, deepening parts, cold extrusion parts and rod blanks. In addition, this technology will be promoted widely in the company to provide a bigger, adequate help and technical reference for the engineering technicians of the company.