Factors Affecting Sheet Metal Parts And Joint Design

Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape.

Factors affecting sheet metal parts and joint design.

Also the buckling and torsional strength of many sheet metal and tubular parts depends primarily on the thickness of the material rather than its allowable compressive and shear strengths. Distortion can be a major factor in sheet metal welding. Varied metals and metal alloys can be formed into sheets and used to fabricate sheet metal parts. 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.

Since each metal fabricator has its own tooling bend factors and equipment to develop the flat blank it is better to fully dimension to formed views for that manufacturer. Thickness is represented by t and d b is the diameter of the blank. Proper joint design and correct welding procedures limit distortion. 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.

Sheet metal bending is the plastic deformation of the work over an axis creating a change in the part s geometry. Thickness to diameter ratio is a main factor used to quantify the geometry of a blank and can be calculated by t d b. For noncircular sheet metal parts the maximum diameter is sometimes used. Your manufacturer may not be able to match dimensions when creating the actual sheet metal part due to tooling and equipment limitations.

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. The manufacturer s srm often indicates what material can be used as a substitution and how much thicker the material needs to be. Whenever sheet metal is heated some distortion will occur. See figure 8 for typical distortion in a t and butt joint.

Required joint type. Bending of sheet metal is a common and vital process in manufacturing industry. Permanent or temporary joint. Sheet metal bending methods design tips k factor bending is one of the most common sheet metal fabrication operations.

Following factors affect the selection of sheet metal joining process. Sheet metal thickness is an important aspect of deep drawing process design.