CRANKSHAFT DESIGN AND MANUFACTURING PROCESS FOR TATA LPT2516 TC
Under the gud!n"e #$ Pr#$% K&SSN R!#' N!t#n!( In)ttute #$ Indu)tr!( Engneerng%
SU*MIITTED *+ ,ANA Sandeep
1
Allwyn Kingsley
8
Amar Ta Tapre pre
11
Avinash Av inash Vishwakarma Krishana Kant Shukla
48
Niket Sharma
127
!"#$% 4&' S$() A
Contents:-
1%
INTRODUCTION
2%
CRANK SHAFT NOMENCLATURE
.%
ENGINE SPECIFICAT SPECIFIC ATIONS IONS
/%
MATERIAL MATERIAL SELECTION
5%
FORCES ON CRANK SHAFT
6%
DESIGN CALUCULATIONS
26
0%
MANUFACTURING PROCESS
%
REFERNCES
#NT*+",(T#+N (*ANK S-A.T)%
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CRANK SHAFT NOMENCLATURE,-
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Crankshafts materials should be readily shaped, machined and heat-treated, and have adequate strength, toughness, hardness, and high fatigue strength. The crankshaft are manufactured from steel either by forging or casting. The main bearing and connecting rod bearing liners are made of babbitt, a tin and lead alloy. Forged crankshafts are stronger than the cast crankshafts, but are more expensive. Forged crankshafts are made from S! "#$% or similar type steel. Forging makes a very dense, tough shaft &ith a grain running parallel to the principal stress direction. Crankshafts are cast in steel, modular iron or malleable iron. The ma'or advantage of the casting process is that crankshaft material and machining costs are reduced because the crankshaft may be made close to the required shape and si(e including counter&eights. Cast crankshafts can handle loads from all directions as the metal grain structure is uniform and random throughout. Counter&eights on cast crankshafts are slightly larger than counter&eights on a forged crankshafts because the cast metal is less dense and therefore some&hat lighter. )enerally automobile crankshafts &ere forged in past to have all the desirable properties. *o&ever, &ith the evolution of the nodular cast irons and improvements in foundry techniques, cast crankshafts are no& preferred for moderate loads. +nly for heavy duty applications forged shafts are favoured. The selection of crankshaft materials and heat treatments for various applications are as follo&s .
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STEP 11 CNC *ORING CNC &ERTICAL MACHINING CENTRE B CNC *#rng #$ "r!n 3n) t# #8t!n the $n!( dr(( d!%
STEP 12 INSPECTION In)3e"t#n #$ d!etre) 8: erner "!(3er%
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STEP 16 INSPECTION Che"ng #$ ntrdng "!)e th"ne)) !nd "!)e h!rdne))%
STEP 10 SUPERFINISHING &I*RATOR+B Sur$!"e $n)h #$ 1 t# 1%2 R! ) #8t!ned thr#ugh &8r!t#r: $n)hng%
STEP 1 FINAL INSPECTION Fn!( "he"ng !g!n)t the dr!4ng%
REFERENCES:-
1) Machine Design Book, by Khurmi !u"#a $) h##":%%en&'iki"e(ia&org%'iki%S#raigh#-si*engine +) h##":%%'''&e"ieng&com%"is#on*engine*#echnoogy%cranksha#*(esign*issues&h#m .) h##":%%'''&#he-cranksha#&ino%$//0%/%cranksha#*/2&h#m 5) www.corusautomotive.com/file_source/automotive/.../Crankshafts
2) h##":%%'''&#he-cranksha#&ino%$//0%/%cranksha#*/2&h#m
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