The stamping parts processing plant talk about the fillet radius of the convex and concave mold

In the stamping parts processing plant, the punch fillet radius r, generally r is equal to the illustrated radius r of the workpiece, if the drawing does not give a clear r size, then ru003dt; if the illustrated size is less than the minimum bending radius, the first Bend an angle larger than the size shown in the figure, and then increase the shaping process; if r/t≥4, the rebound factor should be considered, and the corner radius of the punch should be appropriately corrected; the corner radius of the die in the stamping part processing plant is not straightforward Affects the forming size of the workpiece, but if R is too small, it will scratch the blank during bending and cause scratches on the surface of the material; too large will increase the depth of the die. For general bending parts, the corner radius of the die can be selected between 4~6 times the material thickness. When the material thickness is greater than 1mm, the smaller value is used, and when the material thickness is less than 1mm, the larger value is used; that is, Ru003d(4~6)t circle The surface roughness of the corner radius is required to be less than 0.2μm. When bending symmetrically, the two sides should be consistent, otherwise the material will drift during bending. Recommended article: What are the main factors that determine the quality of the section of metal stamping parts? Previous post: How to calculate the bending force in the processing of stamping parts