Dimple Operation In Sheet Metal

Sheet metal design consideration dimple.

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. Eliminates the need for expensive air knife systems. Draw dies create the part shape by controlling metal flow into a cavity and over the forming punch. The welker roll dimpler minimizes blank sticking by adding rows of small dimples to sheet metal in coil fed operations.

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. Dimples prevent blanks from sticking together simplifying handling for operators and press feed robots. This plate prevents the metal from wrinkling as it flows into the cavity. 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.

Prevents die damage and downtime. Aluminum sheet is the easiest common. The process uses a pair of rolls which are designed with rows of specially shaped teeth that deform the strip creating the dimple shapes from both sides of the plain sheet prior to the traditional cold roll forming process as shown in fig.