Calculate size of blank required for drawing, Mechanical Engineering

Calculate Size of Blank Required for Drawing

A flanged cup shown in Figure is to be produced by deep drawing. Calculate the size of the blank required for drawing.       

118_Calculate Size of Blank Required for Drawing 1.png

                                                                                                  Material : Al

Sheet Thickness : 1.5 mm

All dim. in mm

Solution

Neglecting sheet thinning/thickening,

Area of flanged cup = Area of blank

The cup shape is divided into 3 primitives as under

Annular Disc

Area

A1 = ∏/ 4 (152  - 102 )

= 125 ∏ /4 mm2

Cylindrical Part

Area A2  = ? DL

= ? × 10 × 8 = 80 ? mm2

Circular Disc

Area A3 = ∏ / 4  D2

 = (∏ /4 )× 100 mm2

Area of flanged cup

A = A1 + A2  + A3

= 545 ∏ / 4

931_Calculate Size of Blank Required for Drawing 2.png

                                  = 545/4  ∏

Diameter of blank, Db  = √545

                                 = 23.35 mm

Diameter of blank can be chosen to be 25.00 mm to account for material properties, die clearances and trimming allowances.

Posted Date: 12/26/2012 7:03:46 AM | Location : United States







Related Discussions:- Calculate size of blank required for drawing, Assignment Help, Ask Question on Calculate size of blank required for drawing, Get Answer, Expert's Help, Calculate size of blank required for drawing Discussions

Write discussion on Calculate size of blank required for drawing
Your posts are moderated
Related Questions
In general, it seems easy: polishing scored cylinders and pistons, replacing worn seals, existing excessively worn or damaged parts, etc. Though, for an ordinary person, the proble

Q. Can you explain Pneumatic gauges? Pneumatic gauges permit reading or recording water level at some distance from the river, say up to about 305 m. In a diaphragm type gauge,

Various Properties of Lubricant Viscosity: The property of lubricant which is a measurement of the internal friction of lubricating oil is called its viscosity. The vi

Q. What is Crest gauges explain? In case of bridges, it is sometimes necessary to observe high flood levels rather than daily gauges to ensure that minimum clearance is not enc

Q. What is Issued for Approval? This initial formal issue of the P&IDs to the Customer incorporates the process development agreed to in the approved IFD level PFDs. In additi

For the collapse loads indicated in Figure Q3, find the required plastic moment of resistance (M p ). The frame members have varying plastic moments of resistance as indi

A piece of Al weighing 6 kg and initially at a temperature of 300 O C is suddenly immersed in a fluid at a temperature of 20 O C. The convectice heat transfer coefficient is 58 W/m

Grinder: Grinders are used to sharpen the cutting edges of the tools. They are basically fast rotating grinding wheels carried at one or two ends of a shaft. The grinding wheel ar

Safety Functions - Industrial Safety In the statement about safety organization various functions have been mentioned. Yet, a clear description is lacking. Without much elabor

Clearance Volume ( V C ) : The nominal volume of the combustion chamber above the piston when it is at the top dead centre is the clearance volume. It is designated as V C an