What is the automobile stamping parts?

Factory has four processes, The four workshop) Respectively is stamping workshop, welding workshop, painting workshop, assembly workshop. Automotive stamping parts produced in stamping shop. Give you an example, the car shell you see all the metal case, belong to stamping parts, the basic principle is to steel plate using design to make good mould, according to the design process with the press ( Dozens of tons to 2000 tons) Pressure into the required shape. As for his role is very difficult to explain, is a steel plate by stamping workshop as stamping parts, stamping parts after welding workshop become white vehicle body, chassis, the door is steel structure, roof, floor, hood, fender and so on are welded together, equivalent to the skeleton of the vehicle, which has a number of assembly position, there are a lot of the assembly holes of assembly nut, etc. The engine after coating processing, assembly workshop, electrical components, inner decoration, seat, steering wheel, such as, tires, lights on, a car basically is completed. Determine the stamping on shape and dimensions of the sheet metal, is analyzing stamping parts deformation degree, design process and the premise of the formulation procedure. If sheet shape, not only the phenomenon of deformation along the uneven distribution of sheet metal can be obviously improved, but also can improve the forming limit, and can reduce the ear height, reduce trimming allowance. In addition, for some directly after blanking forming parts, if you can give a precise sheet shape and size, can decrease The Times of test of the variable to shorten the production cycle, improve the productivity. In this paper, on the basis of finite element simulation put forward a new method for optimization of plate - — Proportional factor method, the method in the adjustment of the initial contour line, not the same adjustment amount to each node a, but according to the various nodes of the scaling factor and omega shape error value to calculate the corresponding adjustment quantity, pertinence of this adjustment, the calculation results more accurate and less needs iteration time. And to optimize the initial contour line, this paper USES the finite element inverse algorithm, namely step algorithm is obtained, the method to calculate the initial sheet directly by the final shape of parts, computing speed is fast. Through the combination of the two methods, to solve the initial shape and dimensions of the sheet metal, stamping parts not only high calculation precision, and less time consuming. The last chapter, this paper gives two kinds of typical punching parts, one is directly after blanking forming parts, the parts require very precise size and shape of the initial sheet; Another kind is the forming parts, the parts of the initial sheet requirement is suitable for the shape and size. The method is verified by field is used to determine the shape of the initial sheet metal stamping parts and size. A: basic introduction of stainless steel stamping