Factors Affecting Sheet Metal Parts And Joint Design

Several factors affect the final shape and accuracy of the components including the effect of the punch and die radii the punch to die clearance the heat treatment of tooling the lubricant the press speed the press force and the blank holding pressure.

Factors affecting sheet metal parts and joint design.

The manufacturer s srm often indicates what material can be used as a substitution and how much thicker the material needs to be. Sheet metal thickness is an important aspect of deep drawing process design. See figure 8 for typical distortion in a t and butt joint. Similar to other metal forming processes bending changes the shape of the work piece while the volume of material will remain the same.

For noncircular sheet metal parts the maximum diameter is sometimes used. Sheet metal bending methods design tips k factor bending is one of the most common sheet metal fabrication operations. Proper joint design and correct welding procedures limit distortion. Varied metals and metal alloys can be formed into sheets and used to fabricate sheet metal parts.

Thickness to diameter ratio is a main factor used to quantify the geometry of a blank and can be calculated by t d b. The choice of materials depends on the requirements of the application and factors in material selection include formability weldability corrosion resistance strength weight and cost. Permanent or temporary joint. Whenever sheet metal is heated some distortion will occur.

Required joint type. Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape. Distortion can be a major factor in sheet metal welding. Bending of sheet metal is a common and vital process in manufacturing industry.

Your manufacturer may not be able to match dimensions when creating the actual sheet metal part due to tooling and equipment limitations. Selection of the type of sheet metal joint affects product design cost assembly process and its performance. Thickness is represented by t and d b is the diameter of the blank. Sheet metal bending is the plastic deformation of the work over an axis creating a change in the part s geometry.

Cutting and forming thin sheets of metal usually performed as cold working sheet metal 0 4 1 64 to 6 mm 1 4in thick plate stock 6 mm thick advantage high strength good dimensional accuracy good surface finish economical mass production low cost. Following factors affect the selection of sheet metal joining process.