Metal stamping parts processing used by the mold known as the stamping die, die for short.
Die is the material (
Metal or nonmetal)
Batch processing into salt pieces of special tools required.
Is of vital importance to the die in stamping, did not conform to the requirements of punching die, stamping production batch is difficult;
No advanced punching die, stamping process of advanced cannot achieve.
Stamping process and die, stamping equipment and materials to form the three elements of stamping processing, can only draw stamping them together.
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.
The previous: metal stamping mold