Brihat parasara Hora shastra states in Chapter 3., Shloka 68 : “Whichever portion is ruled by Saturn, will be the portion of Gulika”. As there are many methods of calculations of Gulika and…Full description
Design of Compound die Design Suitable Die and Punch For Given Object: Thickness = 1mm Fs = 300 N/mm 2 Factor of Safety (F.O.S) = 3 E = 2 x 10 N/mm2
!e can "se com#o"n$ $ie an$ #ro%ressi&e $ie for this com#onent 'eca"se there are to o#eration 'ankin% an$ #iercin%. *"t e ha&e #refer #re ferre re$ $ com com#o" #o"n$ n$ $ie $ie++ 'ec 'eca"s a"se e e o" o"$ $ ik ike e to car carry ry o"t 'ot 'oth h o#eration at one station in one stroke of ram.
(Perimeter P = (, - ) (, -$) (!here (!here = O"ter O"ter $iamete $iameterr in mm) mm) = (, - 32) (, - 20) (!here $ = nner $iameter in mm) = 13.3 mm
!onnage Capacit" = ( ( - t - Fs) Fs) / (100 (10000 00)) (!he (!here re t = Thic Thickn knes ess s in mm) = (13.3 - 1 - 300) / (10000) = .40 tonnes (Fs = Shear stren%th in N/mm2 )
For blan#ing operation ie si5e = *ank si5e
= 32 mm To fin$ thickness of $ie e ha&e to fin$ o"t #erimeter #erimeter of 'ankin% ony. erimeter ()
= 3.1 - = 3.1 - 32 = 100.3mm
$s the outer perimeter (P is in bet%een &'mm to ')mm so the re*uired thic#ness of die %ill be ta#en as ' mm+ 6s the $istance from o"ter e$%e to inner e$%e $e#en$s "#on the thickness so78 The istance 'eteen O"ter E$%e E$%e an$ nner E$%e of the ie78 = 1. - t (!here t = Thickness of $ie in mm) = 1. - 2 = 39. mm = 3: mm
<earance = of >eta Thickness = 0.0 -1 = 0.0 mm
,lan#ing Punch and piercing die Piercing operation:"nch Si5e = ?oe Si5e = 20 mm ie Si5e = ?oe Si5e 2 - <earance
= 20 (2 - 0.0) = 20.12 mm
ength of Punch ( or height of punch ?@ = (,@ - E - ) A (F< - F.O.S) !here+
B = Ben%th of #"nch or hei%ht of #"nch in mm E = Co"n% mo$""s in N/mm2 = >oment of inertia in mm F< = Tonna%e ca#acity or c"ttin% force F.O.S = Factor of safety = (, - $) A () = 9:3.4: mm
?ence
(For
?= D(, @) - (2 -10) - (9:3.4:) A D (.40 -10 ) - (3) = 32.9 mm
