Engineering Sheet Metal Drawing Notes

Accuracy in the use of the scale rule.

Engineering sheet metal drawing notes.

Fig shows the shearing of sheet metal between two cutting edges. Formability of sheet metal is the ability of sheet metal to be drawn into cups or formed into the desired shapes without any defect. 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.

Drawing force power and number of stages defects in products. Punch begins to push into work causing plastic deformation 3. Engineering graphics is used in the design process for visualization communication and documentation. 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 annotations a bend note adds fabricating information to sheet metal bend centerlines. The proper relation of views in a drawing. A bend table lists propertied of all bends in a flat pattern view of a sheet metal part. After you insert the bend table in the drawing bend tags are added to the selected drawing view.

Bend notes are associated with a drawing view. Cutting of sheet metal is accomplished by a shearing action between two sharp edges. Engineering drawing basic sheet layout title block notes engineering working drawings basics. How to dimension a drawing.

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. Unit iv sheet metal working economical considerations stamping forming and other cold working processes.