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Transcript of Liceul Tehnologic Petre P.docx
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,,Liceul Tehnologic Petre P.Carp
Proiect pentru examenul de certificare a
competentelor profesionale
Specializarea tehnician mecanic pentru intretinere si
reparatii
NIVEL 4
INDRUMATOR: Elev:
Prof.Vervega Elena Olteanu Mdlna!M"aela
#la$a a %II a &
Tibanesti 201
'
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TEMA PROIE#T
MASINI SI UTILAJE SPECIFICE ATELIERELOR
MECANICE
(
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CUPRINS
!"#$%&'T(((((((((((((((........................1
#&'&"!L)T!T)((((((((((((.(.........................2
C!P)T*L$L1 %!S)')...............................................................+
1.1 MASINI DE GAURIT......................................................................................5
1.2 CLASIFICAREA MASINILOR DE GAURIT................................................6
1.3 MASINI DE GAURIT RADIALE..................................................................7
1.4 MASINI DE GAURIT CU MONTANT......................................8
1.5 MASINI DE GAURIT CU COLOANA......................................9
1.6 MASINI DE GAURIT DE MASA.............................................10
1.7 MASINI DE GAURIT CU CAP REVOLVER ..........................1'
C!P)T*L$L 2 $T)L!&.....................................12
1.8 UTILAJE PENTRU PRELUCRARE A TABLELOR................13
1.9 INDREPTAREA SEMIFABRICATELOR................................14
1.1.1 PRELUCRAREA TABLELOR..............................................15
1.1.2 INDOIREA SEMIFABRICATELOR......................................16
1.1.3 DEBITAREA SEMIFABRICATELOR...................................17
CAPITOLUL 3.............................................................1-
1.10 STRUNGURI........................................................................19
1.1 CLASIFICAREA STRUNGURILOR........................................20
1.2 STRUNGURI NORMALE UNIVERSALE................................21
1.3 STRUNGURI REVOLVER......................................................22
)
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1.4 STRUNGURI AUTOMATE......................................................23
Capitolul 4........................................................................24
1.5 PROTECTIA MUNCII..............................................................24
ARGUMENT
4
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P!"#$ % &'$"% #(%#%)** + ,$!- '%*"%" /* '$ '"$** *!*"#,$* - %'#+ +,*"- %"!)* "$"$## "%(# (#'$$*"!*'*!+*#!" + (!+#% # *! $$""% + $'#-#* ' "#,$* &'$"%".
D*(*"* $"**%" % $'#-#* + #(%#%)** (#*!"- %# +*#*"%" + $)**'!"#$'"* +%"#*"- $'#-#*# %#" !$#% * +*#*" ' "#,$* &'$"%". L$'#-#* + #(%#%)** '$#!"*'** * '%(*"% &'$"- :! %"*# + #(%#%)** %*!"#(#*!+#*#.
D$(- -#*% *!"#(#*!+#**%'" #(%#%)** (" %' *!"#;$! *!$# %"*# %$ *! %*$" %"*#+*!"# '%# $!$ '!"#% $, +*#'"% '!+$'# % '%!*'$$*
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Capitolul 1 MAINI UTILIZATE IN ATELIERULMECANIC
1.1 G!#%*"-)* %/*!* + -$#*"M%/*!* + -$#*" $!" %/*!*;$!" ( '%# &'$"- (#%)** "!*' +-$#*# -#*# %%# %%# *"%# !'$*# /* -$#*# *!-.
A'" %/*!* '!"*"$* '*#'% 20 +*! ""%*"%"% %/*!*#;$!" %/'*"%# +*!+"%#% *!+$"#** '!"#$'"%# + %/*!*.
L%#% $"**%# % %'"# %/*!* %' '% - #(#*!" ' %* %# (#'!"% +*!""%$ %/*!*#;$!" &*"!" *!"#;$! %"*# + -'-"$/#*.
M*/'%#% (#*!'*(%- + #"%)* % '$* /* */'%#% + %%! + "#%!%)* :! $!$ %&*'$* $!" &'$"%" + %#,# (#*!'*(%. C%#%'"#*"*'% (#*!'*(%- "!*'- /* + &(%"%#
% %/*!*# + -$#*" '!"*"$* +*%"#$ %&* % -$#** &(#*%" :! '%# (%"&'$"% :! (*! '$ $! ,$#*$ *'*+% '$ $! #* ("* + %/'*# :!"#;$! *%,#*'%" +*!) '$ #*"!)% % #$(# + 60;70 +%N2 .
M%/*!* + -$#*" $, %('" +*!*!% /* '% %"%# % (*,**"-)*# + &(%"%# %* '%#%'"#*%- (#*!= '$#% %&*- % %#,#$* (#*!'*(% +*!*$!* * +*"%!)% :!"#%#,# (#*!'*(% /* !"%!" %$ '%!% %/*!** /* :!-)*% %#,#$* (#*!'*(% %)- + ,%% %$%% %/*!**.
L% %/*!* + -$#*" (#*! ,$#*# (*% + (#$'#%" " *&- *%# %#,# (#*!'*(% '$,$#*$ &'$"- */'%#% (#*!'*(%- + #"%)* /* */'%#% '$!+%#- + %%! #'"**!*.
P-#)* '(!!" (#*!'*(% % +*#*"# %/*!* + -$#*" '%!*' *& $!"= %#,#(#*!'*(% %% (!"#$ *&%#% (** + (#$'#%" '%!% %$ ,%"*$ '$"*% + %%!$#* /* '$"*% +*".
P!"#$ % %' - '#($!+- %&% '$* '$ %&% -$#** ' "#,$* &'$"%"- :! (*% + (#$'#%"&*"- %* $" (*,**"-)*. ! '%$ (*# *'* +(%%- '$ +*(*"*$ :! '%# $!"(#*! ( %% %/*!** (!- '!+ ' +$- %& '#($!+.
C!+ (* '%# "#,$* -$#*" $!" + +*!*$!* +** /* $!" *&%" + %% %/*!** %'%"%
(%" +(%% :! (%! #*!"% (!"#$ % ($"% #%*% (#$'#%#% :! '$ +#*".L% &(%"%#% %/*!*# + -$#*" :! '!+*)** %*$#-#** (#'*** *($ /* % #*"!)* '$*/* % (** %/*!% "#,$* %" #%"- :!'" - %*$# :!'-#'%# !#"*'- '" %* %#.
1.2 Clasificarea masinilor de gaurit
+
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%. +$(- +$ + %')*!%# %/*!* + -$#*" (" '%**'% :!=
%/*!* + -$#*" %!$%? %/*!* + -$#*" '%!*'?
,. +*! ($!'" + +# '!"#$'"* * % +!*$$* + $"**%# +*"*! $#-"%# "*($#* +%/*!*=
%/*!* + -$#*" + %-=
%/*!* + -$#*" '$ !"%!"? %/*!* + -$#*" '$ '%!-? %/*!* + -$#*" #%+*%? %/*!* + -$#*" $"*%&?
%/*!* + -$#*" '$ '%( ##? %/*!* + -$#*" ('*%*%" >(!"#$ -$#* *'* + '!"#$*" (!"#$ -$#*
%+!'* @?
'. +$(- (*)*% %#,#$* (#*!'*(%=
%/*!* + -$#*" #*!"%? %/*!* + -$#*" #"*'%?
1. Ma!ini de g"urit radiale
,
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A'" %/*!* ' % (#$'#%#% -$#*# :! (* + +*!*$!* %#* /*# %'-## %!#%# " +**'*- **!+ +'* %* '+- #%#% (*)** '$* %)- + (*- +'"*!#.
C!"#$'"* '%#%'"#*%- (#*! %("$ '- (-($/% + -$#*" " %(%%"- ( $! ,#%)( '%# (%" (*)*!% #%+*% % #!+$ $* ,#%)$ **!+ %#"*'$%" + '%!- %)- + '%# (%" #"* /* +(%% ( #"*'%-. A'" +(%-#* %*$#- ,**"%"% '$* :! (%)*$ :!"#;$!*" + '#+!%" '**!+#*'.
C*!%"*'% + $'#$ % %'"# %/*!* " *! (#*!'*(*% %'%/* '% % %/*!* #"*'%+*#*" **!+ +%# */'-#* + (*)*!%#.
C%**'%#% %/*!*# + -$#*" #%+*% %' :! (#*!'*(% :! $!')* + ,#%)$ #%+*%=
+$(- '!"#$')*% ,#%)$$* #%+*% %'"% (%" *= !,' >#**+@ ? %#"*'$%".
+$(- ,**"%"% ,#%)$$* #%+*%=
1.%'"% (%" %% +%# */'%# + #"%)* :! $#$ '%!* %*$#!+ #%#%(*)** '$* :! '#+!%" (%#?
2.(%" %% /* +(%%# ( #"*'%- (#*)!+ +'* #%#% (*)** '$* :!'#+!%" '**!+#*'.
1;(%'- + ,%-?2;'%!-?3;,%) #%+*%?4;'%($ >(-($/%@ +-$#*#?5;(*!- + %%!?6;%#,# (#*!;'*(%?7;%-.
P#*!'*(*$ '!"#$'"* /* '*!%"*'% %/*!*# + -$#*" #%+*% '$ ,#%) #**+ /* +$,- ,**"%"$!" (#!"%" :! *$#% 1. :! '%# ;%$ !"%"=
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1.M"# '"#*'.2.C%!-.3.B#%) #"*"#>"#%#%@.4.T%,$ + '%!+-.5.S$(#".6.P%'% + ,%-.7.M%% %/*!**.8.A#,# (#*!'*(%>%&@.9.P#*.
10.G*+%.11.C$"*% + *" /* %%!$#*.12.M"# '"#*'
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1..1 Modul de func#ionare a ma!inei de g"urit radiale
M*/'%#% + #"%)* ! % '$* ,)*! + % "#$ '"#*' 12 (#*! '$"*% + *" +*!
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(#$'#%# ,)*! '$%$"#$ '$"** + *" CV.M*/'%#% + %%! 1 ,)*! + % %'%/*"# M1 (#*!"#; #%**'%# (#*! %!)$ '*!%"*' 56'$"*% + %%!$#* CA78'%!*$ (*!*!;'#%*#-12. P!"#$ +(%%#% '-#$'*#$$* ( "#%#- %')*!%-+ % #%"% + !-R %$(#% '%!*$$* (*!*!;'#%*#- 34. C,##% /* #*+*'%#%"#%#*>,#%)$$*@ &'$"- '$ %$"#$ "#$$* M2 (#*! %!)$ '*!%"*' 91011
'%!*$ /$#$,;(*$*)- (. B#%)$ (%" #"* ( '%!- %!$% +$(- +,'%# % %'"$*%.
1.$ Ma!ini de g"urit cu montant
M%/*!* + -$#*" '$ !"%!" $!" '!"#$*" (!"#$ &'$"%#% -$#*# '$ +*%"# + % 25(%!- % 80 ( *%,#*'%" + +*!*$!* *'** * %#*. P-#)* '(!!" % %'"*%/*!* $!" :! !#% %'%/* '% % %/*!* + -$#*" '$ '%!- +,*!+$; + %'"%(#*!"#; #,$"" %* %# +%"- + !"%!" * + +(%%#% ( *+% %'"$*% % '%($$* +
-$#*". I! *$#% 1.5 " #(#!"%"- '% + (#*!'*(*$ % $!* %/*!* + -$#*" '$ !"%!".
1 ; (%'- + ,%-?2 ; !"%!"?3 ; '$"*% + *" ?
4 ; '$"* + %%! ? 5 ; %#,# (#*!'*(%?6 ; *+%?7 ; %%?8 ; (*%?
M ; "# ?I; *'%# (#*!'*(%- ?II ; *'%# + %%!?III ; +(%%#% #"*'%- % '%($$* +
-$#*"?IV < +(%%#% #"*'%- % %*.
''
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1.% Ma!ini de g"urit cu coloan"
M%*!* + -$#*" '$ '%!- $!" '!"#$*" (!"#$ &'$"%#% * (#$'#%#% -$#*#
(%!- % 40 ( *%,#*'%" + #$"-)* * +*!*$!* *'* * *'**.
I! *$#% 1.7 " #(#!"%"- '% + (#*!'*(*$ % $!* %/*!* + -$#*" '$ '%!-. E% '($! +*! (%'% + ,%- 1 *! '%# " *&%"- '%!% 2.
L% (%#"% $(#*%#- % '%!* %- '#($ 3 % %/*!** :! '%# -/" *!,%"- '$"*% +*" * '% + %%!$#*. A#,# (#*!'*(% 4 % '-#$* */'%# (#*!'*(%- I +#*- + %'"#"#$ 5 &'$"- * *'%#% + %%! II :! $!$ %&* %. A%!$ %!$% #%*%- (#*! #"*#% %!"* 6. M%% 7 $)*!$"- + '!% 8 %# (*,**"%"% - #"%'- :!$#$ %&* % >V@ /* *(#$!- '$ '!% *! $#$ %&* '%!* >VI@.! '%$ (*#
$*!% /* # %'" $'#$ (#*" '% (#*! ',*!%#% '# +$- */'-#* - %+$'- (*%%" *!'%" '!"#$ -$#** + &'$"%" %$ (#$'#%" - %%'- ( %&% %#,#$* (#*!'*(%. D%!* #"*#% '!* (#*" '% %% %/*!* - * %+$- *!"#; (*)* '!!%,*-%/-#** *%,#*'%"$$* ( %. C!% '$ %% +(%%- ( #"*'%% >VII@ '$ %$"#$ $!$*%!#!% #%"% +*!)%"- '#%*#% %')*!%" %!$%.
C#($ +(%%- ( #"*'%% >III@ /* #"" *! $#$ %&* '%!* >IV@. M*/'-#* III ; VII$!" + #%#.A'" %/*!* $"**%- +*! ' :! ' %* $" *! %"*# + #(%#%)**.S'% '*!%"*'- + (#*!'*(*$ % $!* %/*!* + -$#*" '$ '%!- " #(#!"%"- *! *$#%1.7.
'(
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F* 1.6 M%*!% + -$#*" '$ '%!-
1;(%'- +2;'%!-3;'$"*% +
4;%#,#5;'"#6;%!"%7;%% $8;'!%>V@;$#$>VI@;%&% >III;VII@;
1.& Ma!ini de g"urit de mas"
M%/*!* + -$#*" + %- %$ '!"#$')* *(- * (" &'$"% -$#* '$ +*%"#$ (%!-% 16 . I! *$#% 1.9 " #(#!"%"- '% + (#*!'*(*$ % %/*!** + -$#*" G;125 .
N#.'#" C%#%'"#*"*'* (#*!'*(% V%#* 1 +*%"#$ %&* + -$#*# *! 125 2 %+%!'*% %&*- + -$#*# *! 80 3 :!-)*% %&*- % *%,#*'%"$$* + -$#*"*! 200 4 !$-#$ + "$#%)** >565 1 550 2 350 3 850#"*!@ 4 5 ($"#% "#$$* + %!"#!%# *! H 075
6 %,%#*"$ %/*!** *! 950&470&110 7 #$"%"% ""%- *! 180
T%, 1.8 C%#%'"#*"*'* (#*!'*(% % %/*!*# + -$#*" + %-
')
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1 ; %- ?2 ; '%!-?3 ; '#($ %/*!*?4 ; '"#"# ?
5 ; '! *! "#("?6 < %#,# (#*!'*(%?7 ; %!"% (!"#$ #%*%#% %%!$$* ?8 ; %!*% (!"#$ +(%%#% ( #"*'%- %'#($$* %/*!**?9 ; %!"% + ,'%#?10 ; #%"% (!"#$ +(%%#% "#$$* *:!"*!+#% '$#* "#%(*+%.
1.' Ma!ini de g"urit cu ca( re)ol)er
C($!#% %'"#% $#-#/" (*,**"%"% (#$'#-#** $!# -$#* '(& * %!$ '$
$! #$( + '$ *&%" *! '%($ ##. S '!"#$*' %" + "*($#* + %/*!* * '$ %% *!'#+!%" '%# -#/" (*,**"-)* "!*' %* % '%!+ $!" (#-$" * '$ '%!+%!$#*'- >CN@.
C%($ ## %%!+ + &($ *! %'" '% /% (*)** /* "" %"%)*% %#,#* (#*!'*(%*" !"%" ( %!*% #"*'%-'%# " %!"#!%"- + $! "# *+#%$*'.A'"%%'**"%- &'$)*% %%!$#*# + $'#$ * #%(*+ *! %, !$#*.
M*/'%#% (#*!'*(%- + #"%)* "#%!*" + % "#$ '"#*' $"*(*'- (#*! '$"*%+ *" CV '$ '$(% '"#%!"*' * (#*! '$(%$ CU %$! % %#,# (#*!'*(% AP*+*!(*)*% + $'#$ +*($!%!+$; %" + "$#%)** +*#*" '*,%,* +*! # (!"#$ *'%#(*)* % '%($$* ##. R"*#% '%($$* ## (#*% + % %'%/* %!) (#*!'*(% +$(-+(%%#% % +#%("% % '$(%$$* CU%" '% #)* 1 * % %!#!.
C$(%$ CU " '%!+%" (#*! (##%$ %/*!** '%!+ %!*% " #"#%- $*'*!".O+%"% '$ #"*#% '%($$* ## (#*! #)* '!*' 2 * 2 #"/" * '**!+#$ "#$$**+#%$*' KML*%# (#*!"#;$! %!) '*!%"*' LD #"" * $! "%,$# '$+#DR1DR6.D'*+#% +*#*"- % *'-#$* +# %*$#- %#* +*#*"- % %%!$$* +
'4
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$'#$ (!"#$ *'%# (*)* #('"* '$% +*! '%($ ##. P &"#*#$ '**!+#$$* + %"#$ KML %- /% #** + **"%"%# L". D%"#*"- #"*#** '**!+#$$* % *'%# (*)* %'%($$* ## %"- #* + **"%"%# %- *! +#("$ *'#'$"%"%## M+ (!"%!"$ MN'%!+%!+$; (#*! *!#%#% %%!$$* "#'#% + % %%! #%(*+ % %%!+ $'#$ + % %%! + $'#$ % #"#%#% #%(*+- %$ %" '#($!-"# %* + % (*)*%
'%($$* ##.
T%,$ + '!+*)** (!"#$ '%!+% +*"#*,$*"#$$* DMR(!"#$ # #%(*+ * % '$* +##%# DP" *! *$#% 2.1. P!"#$ %%! #%(*+ +,*"%- *! *"M DP" %+#%("% * *'*+$ %$! *! '%*"%"% %# % KML. D*! '%*"%"% *'- " %'$%" (#*!$(%(% SCP* (#*! DMR% ###.
L% %%!$ + $'#$ :!%*!" >ALI@ +,*%- :! *" #('"* *! '%*"%"% %#% KML. D*! '%*"%"% *'- " %'$%" (#*! $(%(% SCP *"#$ FDR1* SDP% ###. P!"#$%%!$ + $'#$ !#% DR " % "%!% * "#' (#*! #$%"# *! '%*"%"% *'-
% KML. D'* #$%"#$ " % *!"#%# *%# % #"#%#% #%(*+- >RR@ DMR" % +#%("% *#$%"#$ '$#" '*#'$*"# *!"#%!+ :! "#$ *+#%$*' %, +,*" >M@*! '%*"%"%*'- :! "*( ' +*! '%*"%"% %# *'*+$ " **!%" % ###. S #%#'- *! '%*+#%$*'- '% $(%(% + '-+# + (#*$! SDP% #$%"#$$* " '!'"%"- % ,#!#*"!)* *+#%$*' +%"- + +# ($ *"#$ F%+*'- #%$ *"* + $'#$ % "#$$**+#%$*' !)*! *!+*#!" + *,*'*#% *"#$$* * '#/"#% #*"!)* % *+#%$*' '%' #*"- #%#'%".
M%/*!* + -$#*" '$ '%( ## $!" *'*!" '%!+ '$# $!" '$#" * '(&*"%"%(#$'#-#*# " *'-.
'*
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>CV@;'$"*% + *">CU@;'$(%>API@;%#,# (#*!'*(%>KML@;'**!+#$ "#$$* *+#%$*'>LD@;%!) '*!%"*' '$ +#>DR1?DR6@;"%,$# '$ +#>LT@;#** **"%"%#>M@;*'#'$"%"#>MN@;!"%!">DMR@;+*"#*,$*"# (!"#$ # #%(*+>ALI@;%%! + $'#$ :!%*!">F@;*"#$>SCP@;$(%(->RR@;#"#%# #%(*+->SDR@;$(%(% + '-+# + (#*$!
'+
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Cap 2- UTILAJE SPECIFICE ATELIERULUI MECANIC
2.1Lucr"ri de l"c"tu!erie. *ndre(tarea semifa+ricatelor
!+#("%#% " (#%)*% "!*'- + :!-"$#%# % +#%)**# (#%!!" %*%,#*'%"# (#*! %')*$!% $!# #) &"#*%#.
P#*! :!+#("%# %*$#- *%,#*'%"# "%#% (%!- %$ #'"**!**"%"% $(#%)#.
D#%)** (#%!!" %(%# +*! $#-"%# '%$=
; "#%!(#"$ !'#($!-"# % (*# /* *%,#*'%"#? ; +(*"%# !'#($!-"%#? ; %!#%# #/*"-?
; "#%"%!" "#*' + '-*# %(*'%" #/*".
S*%,#*'%" $($ (#%)** + :!+#("%# (" * $#-"%#=
; "%,? ; )*? ; ,%##? ; (#*$#*.
A(*'%#% (#%)** + :!+#("%# " *!$!)%"- + $#-"#** %'"#*=
; !%"$#% %"#*%$$*? ; +*!*$!* *%,#*'%"#? ; "(#%"$#-.
2.1.1 -Metode de ndreptare dup natura efortului dezvoltat:
! :!+#("%# %!$%-? ; :!+#("%# '%!*'-. dup temperatur:
; :!+#("%# % #'?
',
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; :!+#("%# % '%+.
dup tipul loviturilor aplicate:
; '$ *"$#* + /* $/%#?
; '$ *"$#* #%# /* ($"#!*'? ; (#*! (#'%#% !"$$* + :!'*#.
!+#("%#% %!$%- %(*'- *%,#*'%"# '$ (%"*'*"%" ,$!-+ #** *'* /**'**.
!+#("%#% '%!*'- %(*'- (!"#$ *%,#*'%" + #** %* %#* '%# !'*"-#) + +#%# %* %#*.
! '%$ *%,#*'%"# + +*!*$!* %#* /* '$ (%"*'*"%" #+$- #'%!+-
:!+#("%#% % '%+. ! %'" +'%(%'*"%"% + +#%# (%"*'- '#/" *%# #) !'%#+#-#** #+$'>+ 10 #*@.!'-*#% *%,#*'%"# %' :! +!*$ #%,**"-)**"%#.!+#("%#% % "(#%"$#* *!#*%# +"#*!- %(%#*)*% *$#*#.
! '%$ $!# "(#%"$#* % **"% %&*- (" - %(%#- +**'-#* + "#$'"$#-.
!+#("%#% '$ *"$#* + /* $/%# %(*'- (*# '-*" /* % *%,#*'%"# +*!%*% *.
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Placa de ndreptatN*'%
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a!ina de "ndreptat cu cilindri >+ (%!%"@ (#*!"- +$- #!+$#* + '**!+#* %/%)* :!*;%.! "*( ' +(%%-%"#*%$ " $($ :!'*#** $''* :! !$#*+*#*"#%*!+$; +#%#% (%"*'- !'%#- :!+#("-#**.
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2.'.2 IN,-IREA EMI/A0RICATEL-R
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!e poate reali"a prin lo#ire cu ciocanul.Pentru $%area semi&abricatelorse utili"ea" dispo"iti#e speciale'plac de ndoit pre#"ut cu ori$cii carepermit $%area pro#i"orie a unor dornuri.
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( "#$!? '$ %/*!% + -$#*".
a-n menghinb-pe strungc- cu ma=ina de gurit
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Pres @idraulic Matri7 dePro$lare Fig 4.1
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F* 4.6 Principiul de &unc7ionare
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Fig 5. Ferstrul circular
ai!i "e "e'itat cu "iscu#i a'#a3ie
,onstructi#' sunt asemntoare &erstrului circular.!culelea=chietoare sunt discuri abra"i#e cu l7imea 1-( mm.+u la ba" liant cauciucpentru a a#ea o anumit elasticitate.
2.3.'. ,e+itarea manual" (rin d"ltuireS$!" '$ %/'*"%# '!')*!%" +*! ) + '$) %*%".T-*/$ +$#**'- (#*!
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2.3.3Tenologia de+it"rii manuale.2.3.5Tenologia de+it"rii manuale (rin forfecare
*a debitare ti=urile trebuie s se suprapun ma%imum 2 mm'iar oculntre ti=uri nu trebuie s dep=easc D'5 mm.Foar&eca se orientea"perpendicular pe supra&a7a tablei.ebitarea se &ace 'de obicei'dup trasa'*adebitarea conturului curb se utili"ea" &oar&ec de mn cu ti=uri curbe.
2.*.-Te0!olo5ia "e'itii %a!uale (#i! ac0ie#e
!emi&abricatul se $%ea" n menghin.Ferstrul de mn se 7ine nmna dreapt EmnerulB'iar cu mna stng se prinde cadrul metalic.Pentrudebitare se imprim mi=care rectilinie alternati#.Pn"a de &erstru se
$%ea" orientat cu din7ii nainte. Pentru a e#ita &recrile dintre pn" =imetal se recomand ungerea cu ulei mineral'unsoare consistent.
2.*.2. Te0!olo5ia "e'itii %a!uale (#i! "<ui#e D,*"%#% '$ +%"%%'%"% % %/% $, $! $!* + 5;60.U!*$ + %'$)*# %:! $!')* + +$#*"%"% "%$$* %$ %*%$$*.P!"#$ %"#*% +$#$!*$ + %'$)*# " %*%#*%# (!"#$ %"#*% * % $! $!* + %'$)*# %* *'.L% +-"$*# %(*'- +$- "+=
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DEBITAREA CU DALTA IN CRUCE F* 5.2 S'% +,*"-#* '$ +%"- %"- * +%"- :! '#$'
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2.*.6Co!t#olul o(e#aiei "e "e'ita#e.
*a alegerea procedeului de debitare se 7ine cont de producti#itateamuncii =i de pierderile de material.Pentru table groase se recomanddebitarea n linie dreapt cu &oar&eca ghilotin.*a debitarea conturuluicomple% se poate utili"a ma=ina de ron7it.
ebitarea o7elurilor dure se poate &ace cu discuri abra"i#e.6arele sedebitea" pe strunguri'iar pro$lele cu =tan7e sau &oar&ece. ,ontrolul opera7ieide debitare const n #eri$carea dimensiunilor piesei =i a calit7ii conturuluidebitat.:eri$carea dimensional se &ace cu =ubler'rigl sau echer.
,+PT*;* 4
&su#i "e te0!ic& a secu#it&ii %u!cii. % +,*"%#% (#*! +-"$*# # ($#"% '%#* + (#"')*? % +,*"%#% '$ #-"#-$ + !- *"- $"**%#% (!# '$
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CA6IT-LUL 7 TRUN8URI
1.4 CLASIFICAREA STRUNGURILOR
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=I> *., ?trung revolver 0u 0a1 vert0al
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