Engineering Sheet Metal Drawing Notes

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.

Engineering sheet metal drawing notes.

Bend notes are associated with a drawing view. Bend tags associate rows in a bend table with the view geometry. How to dimension a drawing. Accuracy in the use of the scale rule.

Just before the punch contact work 2. In making the layout for this cleat the following points must be kept in mind. Formability of sheet metal is the ability of sheet metal to be drawn into cups or formed into the desired shapes without any defect. Punch begins to push into work causing plastic deformation 3.

Cutting of sheet metal is accomplished by a shearing action between two sharp edges. 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. Engineering drawing basic sheet layout title block notes engineering working drawings basics. Blanking and piercing bending and forming drawing and its types cup drawing and tube drawing coining hot and cold spinning.

Fig shows the shearing of sheet metal between two cutting edges. The shearing action is illustrated in the figure. 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.

Drawing force power and number of stages defects in products. Unit iv sheet metal working economical considerations stamping forming and other cold working processes. Engineering graphics is used in the design process for visualization communication and documentation.