Engineering Sheet Metal Drawing Notes

Blanking and piercing bending and forming drawing and its types cup drawing and tube drawing coining hot and cold spinning.

Engineering sheet metal drawing notes.

Punch begins to push into work causing plastic deformation 3. Just before the punch contact work 2. Accuracy in the use of the scale rule. Drawing force power and number of stages defects in products.

However in order to have a measure for sake of comparison the limit drawing ratio ldr is taken as a measure of drawability. Bend tags associate rows in a bend table with the view geometry. A bend table lists propertied of all bends in a flat pattern view of a sheet metal part. Cutting of sheet metal is accomplished by a shearing action between two sharp edges.

Bend annotations a bend note adds fabricating information to sheet metal bend centerlines. Engineering drawing basic sheet layout title block notes engineering working drawings basics. The proper relation of views in a drawing. The sheet metal cleat the work of this problem will consist in laying out to full size the views and pattern for a galvanized sheet metal cleat.

How to dimension a drawing. In making the layout for this cleat the following points must be kept in mind. Unit iv sheet metal working economical considerations stamping forming and other cold working processes. The shearing action is illustrated in the figure.

Engineering graphics is used in the design process for visualization communication and documentation. Bend notes are associated with a drawing view. Formability of sheet metal is the ability of sheet metal to be drawn into cups or formed into the desired shapes without any defect.