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.

Engineering drawing basic sheet layout title block notes engineering working drawings basics. Accuracy in the use of the scale rule. However in order to have a measure for sake of comparison the limit drawing ratio ldr is taken as a measure of drawability. A bend table lists propertied of all bends in a flat pattern view of a sheet metal part.

How to dimension a drawing. Engineering graphics is an effective way of communicating technical ideas and it is an essential tool in engineering design where most of the design process is graphically based. Bend tags associate rows in a bend table with the view geometry. Fig shows the shearing of sheet metal between two cutting edges.

Just before the punch contact work 2. Engineering graphics is used in the design process for visualization communication and documentation. Cutting of sheet metal is accomplished by a shearing action between two sharp edges. Punch begins to push into work causing plastic deformation 3.

Drawing force power and number of stages defects in products. Unit iv sheet metal working economical considerations stamping forming and other cold working processes. 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. In making the layout for this cleat the following points must be kept in mind.

Bend annotations a bend note adds fabricating information to sheet metal bend centerlines. The shearing action is illustrated in the figure. The proper relation of views in a drawing.