Engineering Sheet Metal Drawing Notes

A bend table lists propertied of all bends in a flat pattern view of a sheet metal part.

Engineering sheet metal drawing notes.

After you insert the bend table in the drawing bend tags are added to the selected 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. The shearing action is illustrated in the figure. Engineering graphics is used in the design process for visualization communication and documentation.

How to dimension a drawing. Blanking and piercing bending and forming drawing and its types cup drawing and tube drawing coining hot and cold spinning. Bend tags associate rows in a bend table with the view geometry. Bend notes are associated with a drawing view.

However in order to have a measure for sake of comparison the limit drawing ratio ldr is taken as a measure of drawability. Cutting of sheet metal is accomplished by a shearing action between two sharp edges. 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. Fig shows the shearing of sheet metal between two cutting edges.

The proper relation of views in a drawing. In making the layout for this cleat the following points must be kept in mind. Just before the punch contact work 2. Bend annotations a bend note adds fabricating information to sheet metal bend centerlines.

Unit iv sheet metal working economical considerations stamping forming and other cold working processes. Accuracy in the use of the scale rule. Drawing force power and number of stages defects in products.