Abstract
Drawing pieces in the process of drawing in the course of the wrinkling and broken parts is the main form of failure, complex pieces of the general drawing more difficult to calculate the extent of deformation, in the traditional press at home and abroad on the production, is a big drawing Forming, in order to reduce the risk of mold design and manufacturing costs, industrialized countries such as Japan, Germany, the United States, in the design and manufacture molds, usually use finite element analysis, simulation stamping process, the process of drawing forecast may have wrinkling And break down, stamping parts in time to amend the size of the structure to conform to the shape of stamping parts stamping process conditions.
Multi-point edge to control pressure in recent years is drawing a new stamping process, is in the process of drawing at different locations in different settings BHF, since the time of drawing straight edge and have different requirements fillet is the pressure - Force. This will improve the quality of drawing. In this paper, multi-point outdoor vacuum circuit breaker box as an example, in straight edge and fillet set BHF different circumstances, the establishment of products on the 3D CAD model and finite element analysis process. From forming regional, regional security, the principal stress, and other aspects of analysis, analysis showed that although the existence of stress concentration regions, but no wrinkling and the breakdown phenomenon, drawing in a certain height, showed that the multi-point edge to control pressure Drawing is feasible, the results of this analysis, design and manufacture of molds can be used as the theoretical basis, at the same time can be shortened multi-point outdoor vacuum circuit breaker box product development cycle and reduce production costs.
Keywords Multi-point outdoor vacuum circuit breaker box Drawing CAD model Finite element analysis
