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PROYECTO MECANISMO DE LEVA
CRHISTIAN CAMILO VARGAS GRANADOS
CARLOS ROBERTO DUARTE
FUNDACION UNIVERSITARIA LOS LIBERTADORES
FACULTAD DE INGENIERIA
PROGRAMA DE INGENIERIA MECANICA
MECANISMOS
BOGOTA – CUNDINAMARCA
2014
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CONTENIDO
Pág.
INTRODUCCION
1. CONCEPTO DE LEVA 8
1.1. CARACTERISTICAS 9
2. TIPOS DE LEVAS 9
2.1. CLASIFICACIÓN DE LEVAS POR SU FORMA 9
2.1.1. L!" # $%"&'"#( ( $%"&'")*+,. 9
2.1.1.1. L!"& # #*&)(. 10
2.1.1.2. L!"& # $"-(% ( )*'/,#%*)". 10
2.1.1.. L!"& )(,g"#"&. 10
2.1.1.4. L!"& # )"%" ( )%%"#". 10
2.1.2. C'"&*3*)")*(,& # '(& &g*#(%&. 10
. NOMENCLATURA DE LAS LEVAS 11.1. EL DESPLAAMIENTO DEL SEGUIDOR 11
.2. EL DESPLAAMIENTO DE LA LEVA 11
.. EL PERFIL DE LA LEVA 11
.4. PUNTO TRAADOR 11
.5. CURVA PRIMITIVA 11
.6. CIRCULO DE LA BASE 11
.7. CIRCULO PRIMARIO 11
.8. NGULO DE PRESIÓN 11
4. DISEO DE PROTOTIPO 12
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4.1. PROTOTIPO 1
4.2. MATERIALES 1
4.. FORMA DE FUNCIONAMIENTO Y FABRICACION 1
5. CRONOGRAMA 14
BIBLIOGRAFIA 15
FORMULACION DEL PROBLEMA
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E, '" :%&,$ -"$%*" , ' :%(g%"-" # I,g,*%/" M)á,*)" # M)",*&-(&;& #&" #*&:"%" &$ g%:( )(%%&:(,# )(-( ' M)",*&-( # '"& L!"&. E&$ -)",*&-($*, > , :%($($*:( 3,)*(,"' > # &% -(&$%"#( = ?:&$( ",$ ':%(3&(% # '" -"$%*" "' 3*,"' #' :%&,$ &-&$%.
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@USTIFICACION
E&$ :%(=)$( & ") )(, ' 3*, "-:'*"% !"%*(& # '(& )(,()*-*,$(& #"#(& , '")'"& :%&,)*"' # M)",*&-(&; & %"'*" -#*",$ , (%#, > )-:'*%á )(,#(& :"%$&; ," :%*-%" )(-( #()-,$( &)%*$( > &&$,$ ' $%""( $+%*)( =," &g,#" :"%$ # , :%($($*:( 3,)*(,"' ( -">$" > -&$% &3,)*(,"-*,$( )(, -"$%*"'& 3*)*,$& = )"%")$%/&$*)"& #' -)",*&-( )(, &%&:)$*!" &&$,$")*+, :%(:*" # &$ # 3(%-" $+%*)" ( :%('-" " %&('!% -"$-á$*)"-,$.
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OB@ETIVO GENERAL
• D-(&$%"% # 3(%-" ?:%*-,$"' '(& )(,()*-*,$(& :&$(& , )'"& #
M)",*&-(& -#*",$ ' #&"%%(''( # , :%($($*:( # -)",*&-( '!"?:%*-,$"'.
OB@ETIVOS ESPECIFICOS
• I,!&$*g"% ' 3,)*(,"-*,$(; &( = ,"$%"'" # , -)",*&-( # '!";
#-(&$%",#( # &$" -",%" & *-:(%$",)*" , ' $%""( # '" *,g,*%/", ' -,#(.
• D*& 3,)*(, )(, -"$%*"'& #)$*'& =
3*)*,$& :"%" #-(&$%"% && )"%")$%/&$*)"& # -(!*-*,$(; $*:(; )%*$%*(&;'=& = #-á& )(,):$( :%(:*(& #' -)",*&-(.
• T%"""% , g%:( :"%" '" *,!&$*g")*+, # &$ :%(=)$( = ")*" '" ')$%"
# &$(& $-"& # '!".• G"%",$*"% ' , 3,)*(,"-*,$( #' :%(=)$( , 3/&*)( )(, "*'*#"#& #
)(,()*-*,$( , -"$%*"'& # *,g,*%/" = $%-*,(& # ")""#(& #-)",*"#( :"%" &:%3*)*&.
MARCO CONCEPTUAL
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Mecanismo: S(, '-,$(& #&$*,"#(& " $%",&-*$*% =( $%",&3(%-"% 3%"& =(-(!*-*,$(& # , '-,$( -($%* -($(% " , '-,$( )(,#)*#(
%):$(%; )(, '" -*&*+, # :%-*$*% "' &% -",( %"'*"% #$%-*,"#(& $%""(&)(, -"=(% )(-(#*#"# = -,(& &3%(.
Cadena Cinemática: E& , )(,,$( # &'"(,& ,*#(& :(% :"%& )*,-á$*)(&.
Esla!n: U, &'"+, $*, #(& ( -á& :"%& ( '-,$(& # )(,?*+,; :(% -#*(# '(& )"'& & :#, ,*% " ($%(& '-,$(& )(, ' 3*, # $%",&-*$*% 3%" (-(!*-*,$(.
Le"a: E, *,g,*%/" -)á,*)"; ," '!" & , '-,$( -)á,*)( > &$á &$(" , :(% , :,$( > ,( & & ),$%( g(-$%*)(; &*,( , "'"#( # ),$%(.
E, '" -"=(%/" # '(& )"&(& & # 3(%-" (!(*#. E' g*%( #' ") > ' :%3*' ()(,$(%,( # '" '!" $(>; -!"; -: ( )(,)$ )(, ," :*" )(,()*#" )(-(&g*#(%. E?*&$, #(& $*:(& # &g*#(%&H # $%"&'")*+, = # %($")*+,.
Se#$ido%: E' g*%( #' ") > ' :%3*' ( )(,$(%,( # '" '!" $(>; -!";-: ( )(,)$ )(, ," :*" )(,()*#" )(-( &g*#(%.
Moto% de com$sti!n: U, -($(% # )(-&$*+, *,$%,"; -($(% " ?:'(&*+, (-($(% " :*&$+,; & , $*:( # -á>*," > ($*, ,%g/" -)á,*)" #*%)$"-,$# '" ,%g/" >/-*)" # , )(-&$*' > "%# #,$%( # '" )á-"%" #
)(-&$*+,.&%ol de Le"as: U, á%(' # '!"& & , -)",*&-( 3(%-"#( :(% , , ' >& )('()", #*&$*,$"& '!"&; > :#, $,% #*&$*,$"& 3(%-"& = $"-"
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MARCO TEORICO
Dia#%ama de Des'la(amiento
C(, ($( # *,!&$*g"% ' #*&
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INTRODUCCION
E, &$ :%(=)$( & #-(&$%"%" ' 3,)*(,"-*,$( *-:(%$",)*" #' -)",*&-(# L!" , '" *,g,*%/" #' -,#( -(#%,(; '" *-:(%$",)*" # &$ -)",*&-(, -á>*,"& 3,)*(,"'& # '" !*#" #*"%*" )(-( &(, -($(%& # )(-&$*+,;-">*,"& *,#&$%*"'& = -)(& ($%(&.
V%-(& '" 3(%-" , > & $%"$" # #-(&$%"% # 3(%-" ?:%*-,$"' '(&
)(,()*-*,$(& :&$(& , )'"& # -)",*&-(& -#*",$ , #&"%%(''( $+%*)( =, :%($($*:( ?:%*-,$"' = #*& 3,)*(, )(,-"$%*"'& #)$*'& = 3*)*,$&.
L" -$(#('(g/" " $*'*"% &%á # -",%" #*!*#*#" #%",$ $(#( ' &-&$%")"#-*)( > )(-:$ '" :%&,$ -"$%*" # M)",*&-(&; &%á, $%& :"%$& ,'"& )"'& ," :%*-%" & ,$%g"%" , ",$:%(=)$( &)%*$(; ," &g,#" ,$%g")(, "'g,(& "!",)& = -"%)(& %3%,)*"'&; = ," '$*-" ,$%g" # ,
#()-,$( 3*,"' &)%*$( ,$( " , :%($($*:( 3,)*(,"'. T"-*, " '" :"% # ,)%(,(g%"-" & %"'*"%", $"%"& " )-:'*% 3%,$ " '" *,!&$*g")*+,; #*&
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1. CONCEPTO DE LEVA
L"& '!"& &(, -)",*&-(& > :%-*$, )(,!%$*% ' -(!*-*,$( # %($")*+,,*3(%- # ," '!"; #*&:&$" , ' )(,$(%,( # , #*&)( ( &(% ," &))*+,
)*'/,#%*)"; , ($%( -(!*-*,$( :%!*"-,$ &$"')*#(; > & $%",&-*$ " ($%(-*-%( # )"#," )*,-á$*)"J :#*,#( &% ," :"'",)"; ," )(%%#%"; ,"'",)/,; $).
E& , '-,$( # -">*,"%*" #*& & ($*, ' -*&-( -(!*-*,$( , ' (%#, *,!%&( #%",$ ' -(!*-*,$( #
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%$(%,(J &$( & :# !*$"% &* ,!('!-(& '" )
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. NOMENCLATURA DE LAS LEVAS
.1. EL DESPLAAMIENTO DEL SEGUIDORH
E, g,%"' & #3*, )(-( '" :(&*)*+, #' -)",*&-( &g*#(% " :"%$*% # ,:,$( &:)/3*)( #,(-*,"#( )%( ( %:(&(; , %'")*+, )(, ' $*-:( ( )(,"'g," 3%"))*+, #' )*)'( # '" -">*,"%*" #&:'""-*,$( # '" '!" -#*#", 3(%-" ",g'"%.
.2. EL DESPLAAMIENTO DE LA LEVAH
M#*#( , g%"#(& ( -*'/-$%(&; & ' -(!*-*,$( # '" '!" -#*#( # ,:,$( &:)/3*)(; ) ( %:(&(; , %'")*+, )(, ' -)",*&-( &g*#(% #3*,*#(
",$&... EL PERFIL DE LA LEVAH
E& ' )(,$(%,( # '" &:%3*)* # $%""( # '" '!".
.4. PUNTO TRAADORH
E& '" '/," # ),$%( #' %(#*''( ( & >*!"',$. C",#( & $*'*" , &g*#(% :'",(.
.5. CURVA PRIMITIVAH
E& ' 'g"% g(-$%*)( # '" &)&*+, # :,$(& #&)%*$(& :(% ' :,$( $%""#(%;)",#( '" '!" & #&:'"".
.6. CIRCULO DE LA BASEH
E& ' -,(% )/%)'( *,&)%*$( , ' :%3*' # '" '!".
.7. CIRCULO PRIMARIOH
E& ' -,(% )/%)'( *,&)%*$( # '" )%!" :%*-*$*!" = )(, ),$%( , ' ),$%( # '"
'!". E& )(,),$%*)( )(, ' )/%)'( # "& = &:"%"#( # &$ " , %"#*( #'%(#*''( &g*#(%.
.8. NGULO DE PRESIÓNH
E& ' á,g'( ,$% '" ,(%-"' " '" )%!" :%*-*$*!" = '" #*%))*+, *,&$",$á," #'-(!*-*,$( #' &g*#(%.
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4. DISEO DE PROTOTIPO.
4.1. PROTOTIPO
E, :%*-%" *,&$",)*" & :,&+ , %:%(#)*% " -",%" # -">$" ( *,&$%)$*!( #&)"'" #' -)",*&-( # '!" , , -($(% # )(-&$*+, *,$%," )(-( '(&$*'*"#(& , '(& )"%%(&. S #*& & ,)(,$%"%", , ' -%)"#(*,#&$%*"' = > #"%á ,"& :%&,$")*(,& # ")""#( , ' #*&
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"))*(,"#( :(% ," %#" #,$"#" # , -($(% ')$%*)(; &g*#(%& ( !á'!'"&;"'",)*,&; = ," :> &(, -)",*&-(& ?")$(& = )(-:'(& # 3"%*)"% -","'-,$;:%!*"-,$ & #%á, & "%á, #*&
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5. CRONOGRAMA
L"& &*g*,$ ")$*!*#"#& = 3)"& :#, & -(!*#"& :(% )"-*( ?):$"'&:%&,$"#(& " '( '"%g( # , &-&$% ")"#-*)(. L"& 3)"& #"#"& &(, ,&-","& # &$#*( " :"%$*% #' *,*)*( # &-&$% 20142.
Item Acti"idad )ec*a Tiem'oNecesa%io
1 E,$%g" # , ",$:%(=)$( S-"," 5 8 (%"&2 I,!&$*g")*+, #
)"%")$%/&$*)"& =
3,)*(,"-*,$( )"%")$%/&$*)(#' -)",*&-(.
S-"," 6 = 7 8 (%"&
Sg,#" ,$%g" # "!",))(,):$"' = -"%)(& $+%*)(&.
S-"," 10 6 (%"&
4 D*&
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BIBLIOGRAFIA
@OSEP EDQUARD SIGLEY; T(%/" # Má>*,"& = M)",*&-(&; T U,*!&*$=O3 M*)*g",; M") G%" *''; 1998.
CARLOS S. LOPE CA@UN; M)",*&-(& –F,#"-,$(& C*,-á$*)(& :"%" '#*&*,"&; C"%$" E#*)*+,; E#*$(%*"' P"%&(,.
RICARD G.BUDYNAS; D*&