Engineering Sheet Metal Drawing Notes

The shearing action is illustrated in the figure.

Engineering sheet metal drawing notes.

Engineering drawing basic sheet layout title block notes engineering working drawings basics. 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. Accuracy in the use of the scale rule. Blanking and piercing bending and forming drawing and its types cup drawing and tube drawing coining hot and cold spinning.

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. Formability of sheet metal is the ability of sheet metal to be drawn into cups or formed into the desired shapes without any defect. Engineering graphics is used in the design process for visualization communication and documentation. A bend table lists propertied of all bends in a flat pattern view of a sheet metal part.

Fig shows the shearing of sheet metal between two cutting edges. Bend annotations a bend note adds fabricating information to sheet metal bend centerlines. Bend notes are associated with a drawing view. The proper relation of views in a drawing.

Just before the punch contact work 2. 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. Unit iv sheet metal working economical considerations stamping forming and other cold working processes.

Bend tags associate rows in a bend table with the view geometry. Cutting of sheet metal is accomplished by a shearing action between two sharp edges. In making the layout for this cleat the following points must be kept in mind.