Dfm For Sheet Metal

Dfm is particularly important for sheet metal fabrication where small design flaws could result in cracks tears or unwanted bends in the metal.

Dfm for sheet metal. Sheet metal design basics for dfm design for manufacturability is now a common concept in many industries including the sheet metal design sector. Avoid large sheet metal parts with small bent flanges. Design for manufacturing dfm is a philosophy used to create viable designs that are easy to manufacture. It is always better to specify hole diameters that are greater than the sheet s.

The separate bend forming setup is s ll needed and there is now an addi onal power shearing setup for cu ng the sheet into strips for processing. Avoid large sheet metal parts with small bent flanges. Basic dfm guidelines for sheet metal most dfm guidelines are intended to keep the sheet metal from warping tearing or cracking. Dfmpro for sheet metal dfmpro provides pre configured design guidelines dfm best practices which helps to develop better quality parts at reduced cost.

The compound die stamping process is highlighted on the process chart. These trends are rising creating a knowledge gap that results in sheet metal components that companies find increasingly difficult to manufacture. In fact research suggests that manufacturers spend 30 to 50. There are three setups now.

Engineers can turn out sheet metal designs that are both highly functional and easy to make by following design for manufacturing principles. 7 sheet metalworking analysis dfma dfm concurrent costing boothroyd dewhurst inc. Design for manufacturability sheet metal guidelines bends for the ease of manufacturing multiple bends on the same plane should occur in the same direction. For the ease of manufacturing multiple bends on the same plane should occur in the same direction.

This can happen either during the manufacturing process or when the product is in use. Engineers designing sheet metal enclosures and assemblies often end up redesigning them so they can be manufactured. Sheet metal design basic fundamentals make manufacturing a sure thing instead of crossing your fingers that everything will turn out ok. Dfm tips for sheet metal in a sheet metal design specifying hole sizes locations and their alignment is critical.

In general leave enough space between design features so that slight variations in the metal will not impact the final structure. Bends should be toleranced plus or minus one half degree at a location adjacent to the bends.