Dimple Operation In Sheet Metal

When dimple dies are used they are coining the sheetmetal so the harder the applied pressure the more accurate the flare will be with less metal spring back.

Dimple operation in sheet metal.

Aluminum sheet is the easiest common. The problems in volved in a sheet metal operation for the purpose of dlmpling a sheet for a fastener are two fold one to dimple the sheet without distorting the surface of the sheet and two in. The welker roll dimpler minimizes blank sticking by adding rows of small dimples to sheet metal in coil fed operations. Dimples prevent blanks from sticking together simplifying handling for operators and press feed robots.

The minimum distance between one dimple and another is four times the material thickness plus the inside radius of each dimple. Draw dies create the part shape by controlling metal flow into a cavity and over the forming punch. Eliminates the need for expensive air knife systems. Prevents die damage and downtime.

The minimum distance that a dimple should be from a bend is two times the material thickness plus the inside radius of the dimple plus the radius of the bend. Dimpled steel products are increasingly used in a wide range of applications including wall studs framing and roofing members corrugated panels vineyard posts windows and door reinforcement and many other products. This plate prevents the metal from wrinkling as it flows into the cavity.