Then experiments on springback in concave and convexedge flanging are carried out, significance of factors and their interactions are studied with statistics approach.
The convex platform at the front edge of the base-plate not only enhances the strength of the base-plate, but avoids clamping stagnation in the process of feeding paper, which is reliable.
底板前缘的凸台既加强了底板的强度，且在送纸时不会产生卡滞现象，使用可靠。
3
A convex rib is arranged on the edge of the clamp groove. The opening end of the main clamping plate is provided with an inclined part.