The Frmula Judging Method of Edge-turning Limit of Interior Holes
This article takes the loop sutff to form barrel wall by edge_turning as the research object and studies the mathematical equation by employing the parameters of loop stuff to represent the features of edge_turning deformation Combining it with the features of the original material,the edge_turning punch shape and ready_made holes,the article establishes judgment formula of edge_turning limit of interior holes Therefore,the technical analysis of edge_turning of interior holes has been improved from experience to formula calculation and judgment