Browsing by Author "Naseer Ahmed"

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    Eliminating the unnecessary operation in the production line to change the die design of under shock cover of CD-70
    (University of Management and Technology, 2014) Naseer Ahmed; Zia Ur Rehman
    Deep drawing process is a sheet metal forming process where a punch is utilized to force a flat sheet metal (blank) to flow into the gap between the punch and die surfaces. As a result, the blank can be formed into the various shapes. A sheet metal may be drawn into simple cylindrical-, conic- and boxed-shaped part and also complicated parts which normally require redrawing processes using progressive dies. Deep drawing is a popular selection due to its rapid press cycle times. Its capability of producing complicated axisymmetric geometries and several non-axisymmetric geometries in few operations with low technical labors requirement is also an advantage in manufacturing applications. Examples of deep drawing applications include containers of all shapes, sinks, beverage cans, automotive body and structural parts and aircraft panels. The important variables which affect the formability and outcomes of deep drawing can be grouped into two categories: Material and friction factors; and tooling and equipment factors. Proper selection of these variables is crucial in deep drawing to maximize the formability of the sheet metal while reducing undesirable outcomes which includes earing and defects such as wrinkling.