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SUBCOURS
E
EDITIO
N
OD1644 8
MILLING MACHINE OPERATIONS
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US ARMY WARRANT OFFICER ADVANCED COURSE
MOS/SKILL LEVEL: 441A
MILLING MACHINE OPERATIONS
SUBCOURSE NO. OD1644
EDITION 8
US Ar! C"rr#$%"&'#&(#
C")r$# Pr"*r+
6 Cr#',- H")r$
NEW: 188
GENERAL
T# %)r%"$# "0 -,$ $)(")r$# ,$ -" ,&-r"')(# -# $-)'#&- -" -# $#-)%2"%#r+-,"&$ +&' +'3)$-#&-$ "0 -# ,,&* +(, 5,( ,&()'#$ +
',$()$$,"& "0 -# -!%#$ "0 ()--#r$ )$#' -" %#r0"r +r,")$ -!%#$ "0 ,,&*
"%#r+-,"&$.
S,7 (r#',- ")r$ +r# +5+r'#' 0"r $)((#$$0) ("%#-,"& "0 -,$ $)(")r$#.
L#$$"& 1: MILLING MACHINE OPERATIONS
TASK 1: D#$(r,# -# $#-)%2 "%#r+-,"&2 +&' +'3)$-#&- "0 -# ,,&*
+(,.
TASK : D#$(r,# -# -!%#$2 &"#&(+-)r#2 +&' )$# "0 ,,&* ()--#r$.
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MILLING MACHINE OPERATIONS - OD1644
TABLE OF CONTENTS
S#(-,"& P+*#
TITLE.......................................................................................................................................................... ,
TABLE OF CONTENTS............................................................................................................................... ,,
L#$$"& 1: MILLING MACHINE OPERATIONS............................................................................... 1
T+$9 1: D#$(r,# -# $#-)%2 "%#r+-,"&2
+&' +'3)$-#&- "0 -# ,,&* +(,......................................................................... 1
T+$9 : D#$(r,# -# -!%#$2 &"#&(+-)r#2
+&' )$# "0 ,,&* ()--#r$..............................................................................................
Pr+(-,(+ E7#r(,$# 1............................................................................................................. ;-!%#2 r+>-!%#2 +&)0+(-)r,&* "r #'>
-!%#2 +&' %+r>-!%# ,,&* +(,$. M"$- +(,$ +# $#0>("&-+,'
##(-r,( 'r,# "-"r$2 (""+&- $!$-#$2 +r,+# $%,&'# $%##'$2 +&' %"5#r>
"%#r+-#' -+# 0##'$.
1 Knee-type Milling Machines. K#>-!%# ,,&* +(,$ +r#(+r+(-#r,?#' ! + #r-,(+ +'3)$-+# 5"r9-+# r#$-,&* "& + $+''#
$)%%"r-#' ! + 9#. T# 9# ,$ + +$$,# (+$-,&* -+- r,'#$ #r-,(+! "&
-# ,,&* +(, (")& +&' (+& # (+%#' r,*,'! -" -# (")& ,& +
%"$,-,"& 5#r# -# ,,&* #+' +&' -# ,,&* +(, $%,&'# +r# %r"%#r!
+'3)$-#' #r-,(+! 0"r "%#r+-,"&.
+ F""r>")&-#' P+,& H"r,?"&-+ M,,&* M+(, 0,*)r# 1 "& -#
0""5,&* %+*#.
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-r+(9. A #+!2 #r-,(+ %"$,-,"' $(r#5 #+- -# 9# ,$ )$#' 0"r
r+,$,&* +&' "5#r,&*. T# $+''# r#$-$ )%"& -# 9# +&' $)%%"r-$ -#
5"r9-+#. T# $+''# "#$ ,& +&' ")- "& + '"#-+, -" ("&-r" -#
(r"$$0##'
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"0 -# 5"r9-+#. T# 5"r9-+# -r+#r$#$ -" -# r,*- "r #0- )%"& -#
$+''#2 0##',&* -# 5"r9%,#(# %+$- -# ,,&* ()--#r. T# -+# +! #
+&)+! ("&-r"#' "r %"5#r 0#'.
FIGURE 1. PLAIN MILLING MACHINE>KNEE TYPE.
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Bench-type Plain Horizontal Milling Machine. T# #&(>-!%# %+,&
"r,?"&-+ ,,&* +(, ,$ + $+ #r$,"& "0 -# 0""r>")&-#' %+,&
"r,?"&-+ ,,&* +(, ,- ,$ ")&-#' -" + #&( "r + %#'#$-+ ,&$-#+'
"0 ',r#(-! -" -# 0""r. T# ,,&* +(, $%,&'# ,$ "r,?"&-+ +&'0,7#' ,& %"$,-,"&. A& +'3)$-+# "#r#+' +r +&' $)%%"r- +r# %r",'#'.
T# 5"r9-+# ,$
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*#r+! &"- %"5#r 0#' "& -,$ $,?# +(,. T# $+''# $,'#$ "& +
'"#-+, "& -# 9# %r",',&* (r"$$0##' +'3)$-#&-. T# 9# "#$
#r-,(+! )% "r '"5& -# (")& -" %"$,-,"& -# 5"r9-+# ,& r#+-,"& -"
-# $%,&'#.
( F""r>")&-#' U&,#r$+ H"r,?"&-+ M,,&* M+(,.
1 T# +$,( ',00#r#&(# #-5##& + )&,#r$+ "r,?"&-+ ,,&* +(,
+&' + %+,& "r,?"&-+ ,,&* +(, ,$ ,& -# +'3)$-#&- "0 -#
5"r9-+#2 +&' ,& -# &)#r "0 +--+(#&-$ +&' +((#$$"r,#$ ++,+# 0"r
%#r0"r,&* +r,")$ $%#(,+ ,,&* "%#r+-,"&$. T# )&,#r$+ "r,?"&-+
,,&* +(, +$ + 5"r9-+# -+- (+& $5,# "& -# $+''# 5,- r#$%#(-
-" -# +7,$ "0 -# ,,&* +(, $%,&'#2 %#r,--,&* 5"r9%,#(#$ -" #
+'3)$-#' ,& r#+-,"& -" -# ,,&* ()--#r.
T# )&,#r$+ "r,?"&-+ ,,&* +(, +$" ',00#r$ 0r" -# %+,&
"r,?"&-+ ,,&* +(, ,& -+- ,- ,$ "0 -# r+ -!%# ,.#.2 -# ,,&*
+(, $%,&'# ,$ ,& + $5,# ()--#r #+' ")&-#' "& + r+ +- -# -"% "0
-# (")&. T# r+ (+& # "#' ,& "r ")- -" %r",'# ',00#r#&- %"$,-,"&$
0"r ,,&* "%#r+-,"&$.
(2) Ram-type Milling Machines.
(a) Description. T# r+>-!%# ,,&* +(, ,$ (+r+(-#r,?#' ! +
$%,&'# ")&-#' -" + "+# ")$,&* "& -# (")&2 %#r,--,&* %"$,-,"&,&*
-# ,,&* ()--#r 0"r5+r' "r r#+r5+r' ,& + "r,?"&-+ %+. T5" 5,'#!
)$#' r+>-!%# ,,&* +(,$ +r# -# 0""r>")&-#' )&,#r$+ ,,&*
+(, +&' -# $5,# ()--#r #+' r+>-!%# ,,&* +(,.
(b) Swivel Cutter Hea Ram-type Milling Machine 0,*)r# "& -#0""5,&* %+*#. A ()--#r #+' ("&-+,&,&* -# ,,&* +(, $%,&'# ,$
+--+(#' -" -# r+. T# ()--#r #+' (+& # $5,##' 0r" + #r-,(+ -" +
"r,?"&-+ $%,&'# %"$,-,"&2 "r (+& # 0,7#' +- +&! '#$,r#' +&*)+r %"$,-,"&
#-5##& -# #r-,(+ +&' "r,?"&-+. T# $+''# +&' 9# +r# 'r,#& 0"r
6#r-,(+ +&' (r"$$0##' +'3)$-#&- -/# 5"r9-+# (+& #
#,-/#r
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',$()$$#' ,& -,$ -#7-. K##% ,& ,&' -+- +-")* 5# +r# ',$()$$,&* + 9#
+&' + (")& ,,&* +(, -,$ ,&0"r+-,"& (+& # +%%,#' -" "-#r
-!%#$. U$# 0,*)r# 1 "& %+*# 5,( ,)$-r+-#$ + %+,& 9# +&' (")&
,,&* +(, -" #% #("# 0+,,+r 5,- -# "(+-,"& "0 -# +r,")$
%+r-$ "0 -#$# +(,$.
1 Column. T# (")&2 ,&()',&* -# +$#2 ,$ -# +,& (+$-,&* 5,(
$)%%"r-$ + "-#r %+r-$ "0 -# +(,. A& ", r#$#r",r +&' + %)% ,& -#
(")& 9##%$ -# $%,&'# )r,(+-#'. T# (")& r#$-$ "& + +$# -+-
("&-+,&$ + (""+&- r#$#r",r +&' + %)% -+- (+& # )$#' 5#& %#r0"r,&* +&!
+(,&,&* "%#r+-,"& -+- r#@),r#$ + (""+&-.
Knee.T# 9# ,$ -# (+$-,&* -+- $)%%"r-$ -# -+# +&' -# $+''#.
T# 0##' (+&*# *#+r,&* ,$ #&("$#' 5,-,& -# 9#. I- ,$ $)%%"r-#' +&' (+&
# +'3)$-#' ! -# ##+-,&* $(r#5. T# 9# ,$ 0+$-#' -" -# (")& !
'"#-+, 5+!$. T# ##r (+& # r+,$#' "r "5#r#' #,-#r ! +&' "r %"5#r
0##'. T# +&' 0##' ,$ )$)+! )$#' -" -+9# -# '#%- "0 ()- "r -" %"$,-,"&
-# 5"r92 +&' -# %"5#r 0##' -" "# -# 5"r9 ')r,&* -# +(,&,&*
"%#r+-,"&.
Sale an Swivel "a#le.T# $+''# $,'#$ "& + "r,?"&-+ '"#-+,2
%+r+# -" -# +7,$ "0 -# $%,&'#2 "& -# 9#. T# $5,# -+# "&
)&,#r$+ +(,$ "&! ,$ +--+(#' -" -# $+''# +&' (+& # $5,##'
+%%r"7,+-#! 4 ,& #,-#r ',r#(-,"&.
4 Power $ee Mechanism.T# %"5#r 0##' #(+&,$ ,$ ("&-+,' ,& -# 9#
+&' ("&-r"$ -# "&*,-)',&+2 -r+&$#r$# ,& +&' ")- +&' #r-,(+ 0##'$.
T# '#$,r#' r+-# "0 0##' (+& # "-+,' "& -# +(, ! %"$,-,"&,&* -#
0##' $##(-,"& ##r$ +$ ,&',(+-#' "& -# 0##' $##(-,"& %+-#$. O& $"#
)&,#r$+ 9# +&' (")& ,,&* +(,$ -# 0##' ,$ "-+,' ! -)r&,&*-# $%##' $##(-,"& +&'# )&-, -# '#$,r#' r+-# "0 0##' ,$ ,&',(+-#' "&
-# 0##' ',+. M"$- ,,&* +(,$ +# + r+%,' -r+#r$# ##r -+- (+& #
#&*+*#' 5#& + -#%"r+r! ,&(r#+$# ,& $%##' "0 -# "&*,-)',&+2 -r+&$#r$#2
"r #r-,(+ 0##'$ ,$ r#@),r#'. F"r #7+%#2 -,$ ##r 5")' # #&*+*#' 5#&
%"$,-,"&,&* "r +,*&,&* -# 5"r9.
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NOTE
F"r $+0#-! r#+$"&$2 #7-r## (+)-,"& $")' # #7#r(,$#' 5,#
)$,&* -# r+%,' -r+#r$# ("&-r"$.
"a#le. T# -+# ,$ -# r#(-+&*)+r (+$-,&* "(+-#' "& -"% "0 -#
$+''#. I- ("&-+,&$ $##r+ T>$"-$ 0"r 0+$-#&,&* -# 5"r9 "r 5"r9"',&*
'#,(#$. T# -+# (+& # "#' ! +&' "r ! %"5#r. T" "# -# -+# !
+&'2 #&*+*# +&' -)r& -# "&*,-)',&+ +&' (r+&9. T" "# ,- ! %"5#r2
#&*+*# -# "&*,-)',&+ ',r#(-,"&+ 0##' ("&-r" ##r. T# "&*,-)',&+
',r#(-,"&+ ("&-r" ##r (+& # %"$,-,"' -" -# #0-2 -" -# r,*-2 "r ,&
-# (#&-#r. P+(# -# #&' "0 -# ',r#(-,"&+ 0##' ("&-r" ##r -" -# #0-
-" 0##' -# -+# -" -# #0-. P+(# ,- -" -# r,*- -" 0##' -# -+# -"
-# r,*-. P+(# ,- ,& -# (#&-#r %"$,-,"& -" ',$#&*+*# -# %"5#r 0##'2 "r
-" 0##' -# -+# ! +&'.
(6) Spinle. T# $%,&'# "'$ +&' 'r,#$ -# +r,")$ ()--,&* -""$. I-
,$ + $+0-2 ")&-#' "& #+r,&*$ $)%%"r-#' ! -# (")&. T# $%,&'# ,$
'r,#& ! +& ##(-r,( "-"r -r")* + -r+,& "0 *#+r$2 + ")&-#' 5,-,& -#
(")&. T# 0r"&- #&' "0 -# $%,&'#2 5,( ,$ +r -# -+#2 +$ +&
,&-#r&+ -+%#r +(,' "& ,-. T# ,&-#r&+ -+%#r 1/ ,&(#$ %#r 0""-
%#r,-$ ")&-,&* -+%#r#'>$+&9 ()--#r "'#r$ +&' ()--#r +r"r$. T5" 9#!$2
"(+-#' "& -# 0+(# "0 -# $%,&'#2 %r",'# + %"$,-,# 'r,# 0"r -# ()--#r
"'#r2 "r +r"r. T# "'#r "r +r"r ,$ $#()r#' ,& -# $%,&'# ! +
'r+5"- +&' 3+&)-2 +$ $"5& ,& 0,*)r# "& -# 0""5,&* %+*#. L+r*# 0+(#
,$ +r# $"#-,#$ ")&-#' ',r#(-! -" -# $%,&'# &"$#.
(7) %verarm. T# "#r+r ,$ -# "r,?"&-+ #+ -" 5,( -# +r"r
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MILLING MACHINE OPERATIONS - OD1644 - LESSON 1/TASK 1
FIGURE . TAPERS USED FOR MILLING MACHINES.
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A5+!$ -,*-#& -# "(9&)-$ +0-#r -# "#r+r ,$ %"$,-,"'. O& $"# ,,&*
+(,$2 -# (""+&- $)%%! &"??# ,$ 0+$-#' -" -# "#r+r. T# &"??#
(+& # ")&-#' 5,- + $%,- (+% -" -# "#r+r +0-#r -# +r"r $)%%"r- +$
##& %+(#' ,& %"$,-,"&.
8 &r#or Support. T# +r"r $)%%"r- ,$ + (+$-,&* ("&-+,&,&* + #+r,&*
5,( +,*&$ -# ")-#r #&' "0 -# +r"r 5,- -# $%,&'#. T,$ #%$ -" 9##%
-# +r"r 0r" $%r,&*,&* ')r,&* ()--,&* "%#r+-,"&$. T5" -!%#$ "0 +r"r
$)%%"r-$ +r# (""&! )$#'. O -!%# +$ + $+ ',+#-#r #+r,&* "#2
)$)+! 1>,&( +7,) ,& ',+#-#r. T# "-#r -!%# +$ + +r*# ',+#-#r
#+r,&* "#2 )$)+! )% -" /4 ,&(#$. A& ", r#$#r",r ,& -# +r"r
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MILLING MACHINE OPERATIONS - OD1644 - LESSON 1/TASK 1
anywhere on the overarm. Small arbor supports give additional clearance below the arbor supports when small
diameter cutters are being used. Small arbor supports can provide support only at the extreme end of the arbor, for
this reason they are not recommended for general use. arge arbor supports can be positioned at any point on the
arbor. !herefore they can provide support near the cutter, if necessary. !he large arbor support should be
positioned as close to the cutter as possible, to provide a rigid tooling setup. "lthough arbor supports are notclassified, a general rule of thumb can be used for arbor selection##the old reference type " is of a small bearing
diameter, and the old reference type $ is of a large bearing diameter.
NOTE
T" %r##&- #&',&* "r $%r,&*,&* "0 -# +r"r2 !") )$- ,&$-+
-# +r"r $)%%"r- #0"r# ""$#&,&* "r -,*-#&,&* -# +r"r &)-.
Size Designation.A ,,&* +(,$ +r# ,'#&-,0,#' ! 0")r +$,(
0+(-"r$: $,?#2 "r$#%"5#r2 "'#2 +&' -!%#. T# $,?# "0 + ,,&* +(, ,$
+$#' "& -# "&*,-)',&+ 0r" #0- -" r,*- -+# -r+#2 ,& ,&(#$.
V#r-,(+2 (r"$$2 +&' "&*,-)',&+ -r+# +r# + ("$#! r#+-#' +$ 0+r +$
-# "#r+ (+%+(,-!. H"5##r2 0"r $,?# '#$,*&+-,"&2 "&! -# "&*,-)',&+
-r+# ,$ )$#'. T#r# +r# $,7 $,?#$ "0 9#>-!%# ,,&* +(,$2 5,- #+(
&)#r r#%r#$#&-,&* -# &)#r "0 ,&(#$ "0 -r+#.
STANDARD SIE
LONGITUDINAL TABLE
TRAVEL
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N". 8 ,&(#$
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N". 6 6< ,&(#$
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MILLING MACHINE OPERATIONS - OD1644 - LESSON 1/TASK 1
I0 -# ,,&* +(, ,& -# $"% ,$ +##' N". HL2 ,- +$ + -+#
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T/# /"r$#%"5#r
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'#$,*&+-,"&$ +&'2 -#r#0"r#2 +! &"- 0,- +&! $-+&'+r' (+$$,0,(+-,"&.
. M,,&* M+(, A((#$$"r,#$ A&' A--+(#&-$
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-" +9# -# "$- $),-+# -"",&* $#-)% 0"r -# "%#r+-,"& -" # %#r0"r#'.T#(&,(+!2 +& +r"r ,$ + $+0- "& 5,( + ()--#r ,$ ")&-#'. F"r
("&,#&(#2 $,&(# -#r# +r# $" 0#5 -!%#$ "0 ()--#r "'#r$ -+- +r# &"-
+r"r$2 5# 5, r#0#r -" + -!%#$ "0 ()--#r "',&* '#,(#$ +$ +r"r$.
(%) Description.
(a) M,,&* +(, +r"r$ +r# +'# ,& +r,")$ #&*-$ +&' ,& $-+&'+r'
',+#-#r$ "0 ;/82 12 1 1/42 +&' 1 1/ ,&(. T# $+&9 ,$ +'# -" 0,- -#
-+%#r#' "# ,& -# $%,&'#2 -# "-#r #&' ,$ -r#+'#'.
NOTE
T# -r#+'#' #&' +! +# #0->+&'#' "r r,*->+&'#' -r#+'$.
Ar"r$ +r# $)%%,#' 5,- " "0 -r## -+%#r$ -" 0,- -# ,,&*
+(, $%,&'# 0,*)r# 4 "& -# 0""5,&* %+*#2 -# ,,&* +(,$
S-+&'+r' -+%#r2 -# Br"5& +&' S+r%# -+%#r2 +&' -# Br"5& +&' S+r%# -+%#r
5,- -+&*.
( T# ,,&* +(, S-+&'+r' -+%#r ,$ )$#' "& "$- +(,$ "0 r#(#&-
+&)0+(-)r#. I- 5+$ "r,*,&+-#' +&' '#$,*' ! -# ,,&* +(,
+&)0+(-)r#r$ -" +9# r#"+ "0 -# +r"r 0r" -# $%,&'# )( #+$,#r -+&
5, -"$# "0 #+r,#r '#$,*&.
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MILLING MACHINE OPERATIONS - OD1644 - LESSON 1/TASK 1
' T# Br"5& +&' S+r%# -+%#r ,$ 0")&' "$-! "& "'#r +(,$.
A'+%-#r$ "r ("#-$ +r# )$#' -" +'+%- -#$# -+%#r$ -" 0,- -# +(,$ 5"$#
$%,&'#$ +# ,,&* +(, S-+&'+r' -+%#r$.
# T# Br"5& +&' S+r%# -+%#r 5,- -+&* +$" ,$ )$#' "& $"# "0 -#
"'#r +(,$. T# -+&* #&*+*#$ + $"- ,& -# $%,&'# -" +$$,$- ,& 'r,,&*
-# +r"r.
Stanar Milling Machine &r#or0,*)r# 4 #"52 +&' 0,*)r# "& %+*#
1.
+ T# S-+&'+r' ,,&* +(, +r"r +$ + $-r+,*-2 (!,&'r,(+ $+%#2
5,- + S-+&'+r' ,,&* -+%#r "& -# 'r,,&* #&' +&' + -r#+'#' %"r-,"& "&
-# "%%"$,-# #&' -" r#(#,# -# +r"r &)-. O "r "r# ,,&* ()--#r$ +!
# %+(#' "& -# $-r+,*- (!,&'r,(+ $+0- "0 -# +r"r +&' #' ,&
%"$,-,"& ! #+&$ "0 $###$ +&' +& +r"r &)-. T# S-+&'+r' ,,&* +(,
+r"r ,$ )$)+! $%,' +&' +$ 9#!$2 )$#' -" "(9 #+( ()--#r -" -# +r"r
$+0-. Ar"r$ +r# $)%%,#' ,& +r,")$ #&*-$ +&' $-+&'+r' ',+#-#r$.
T# #&' "0 -# +r"r "%%"$,-# -# -+%#r ,$ $)%%"r-#' ! -# +r"r
$)%%"r-$ "0 -# ,,&* +(,. O "r "r# $)%%"r-$ +r# )$#'2 '#%#&',&* "&
-# #&*- "0 -# +r"r +&' -# '#*r## "0 r,*,',-! r#@),r#'. T# #&' +! #
$)%%"r-#' ! +
FIGURE 4. STANDARD MILLING MACHINE ARBOR INSTALLED.
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MILLING MACHINE OPERATIONS - OD1644 - LESSON 1/TASK 1
+-# (#&-#r2 #+r,&* +*+,&$- -# +r"r &)- 0,*)r# 4 "& -# %r#,")$ %+*#
"r ! + #+r,&* $)r0+(# "0 -# +r"r 0,--,&* ,&$,'# + )$,&* "0 -# +r"r
$)%%"r-. ")r&+ #+r,&*$ +r# %+(#' "#r -# +r"r ,& %+(# "0 $###$
5#r# +& ,&-#r#',+-# +r"r $)%%"r- ,$ %"$,-,"'.
( T# "$- (""& #+&$ "0 0+$-#&,&* -# +r"r ,& -# ,,&* +(,
$%,&'# ,$ ! )$# "0 + 'r+5>,& "- 0,*)r# 4. T# "- -r#+'$ ,&-" -#
-+%#r $+&9 "0 -# +r"r -" 'r+5 -# -+%#r ,&-" -# $%,&'# +&' "' ,- ,&
%+(#. Ar"r$ $#()r#' ,& -,$ +&r +r# r#"#' ! +(9,&* ")- -# 'r+5>,&
"- +&' -+%%,&* -# #&' "0 -# "- -" ""$#& -# -+%#r.
Screw &r#or0,*)r# "& -# 0""5,&* %+*#. S(r#5 +r"r$ +r# )$#' -"
"' $+ ()--#r$ -+- +# -r#+'#' "#$. T#$# +r"r$ +# + -+%#r -
-" -# -r#+'#' %"r-,"& -" %r",'# +,*&- +&' $)%%"r- 0"r -""$ -+-
r#@),r# + &)- -" "' -# +*+,&$- + -+%#r#' $)r0+(#. A r,*->+&' -r#+'#'
+r"r )$- # )$#' 0"r r,*->+&' ()--#r$ + #0->+&' -r#+'#' +r"r ,$
)$#' -" ")&- #0->+&' ()--#r$.
4 Slitting Saw Milling Cutter &r#or0,*)r# . T# $,--,&* $+5 ,,&*
()--#r +r"r ,$ + $"r- +r"r +,&* -5" 0+&*#$ #-5##& 5,( -# ,,&*
()--#r ,$ $#()r#' ! -,*-#&,&* + (+%,&* &)-. T,$ +r"r ,$ )$#' -" "'
-# #-+ $,--,&* $+5 ,,&* ()--#r$ -+- +r# )$#' 0"r $"--,&*2 $,--,&*2
+&' $+5,&* "%#r+-,"&$.
(&) 'n Milling Cutter &r#or. T# #&' ,,&* ()--#r +r"r +$ + "r# ,&
-# #&' ,& 5,( -# $-r+,*- $+&9 #&' ,,&* ()--#r$ 0,-. T# #&' ,,&*
()--#r$ +r# "(9#' ,& %+(# ! #+&$ "0 + $#-$(r#5.
(6) Shell 'n Milling Cutter &r#or 0,*)r# . S# #&' ,,&* +r"r$
+r# )$#' -" "' +&' 'r,# $# #&' ,,&* ()--#r$. T# $# #&' ,,&*()--#r ,$ 0,--#' "#r -# $"r- "$$ "& -# +r"r $+0- +&' ,$ #' +*+,&$-
-# 0+(# "0 -# +r"r ! + "-2 "r + r#-+,&,&* $(r#5. T# -5" )*$ "& -#
+r"r 0,- $"-$ ,& -# ()--#r -" %r##&- -# ()--#r 0r" r"-+-,&* "& -#
+r"r ')r,&* -# +(,&,&* "%#r+-,"&. A $%#(,+ 5r#&( ,$ )$#' -" -,*-#&
+&' ""$#& + r#-+,&,&* $(r#5/"- ,& -# #&' "0 -# +r"r.
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MILLING MACHINE OPERATIONS - OD1644 - LESSON 1/TASK 1
(7) $ly Cutter &r#or 0,*)r# . T# 0! ()--#r +r"r ,$ )$#' -" $)%%"r-
a $,&*#>#'*# +-#2 $+%#r2 "r %+r ()--#r ,-2 0"r "r,&* +&' *#+r
()--,&* "%#r+-,"&$ "& -# ,,&* +(,. T#$# ()--#r$2 5,( (+& #
*r")&' -" +&! '#$,r#' $+%#2 +r# #' ,& -# +r"r ! + "(9&)-. F! ()--#r
+r"r $+&9$ +! +# + S-+&'+r' ,,&* +(, $%,&'# -+%#r2 + Br"5& +&'S+r%# -+%#r2 "r + M"r$# -+%#r.
FIGURE . TYPES OF MILLING MACHINE ARBORS.
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MILLING MACHINE OPERATIONS - OD1644 - LESSON 1/TASK 1
b. Collets an Spinles.
(%) Description. M,,&* ()--#r$ -+- ("&-+,& -#,r "5& $-r+,*- "r
-+%#r#' $+&9$ +r# ")&-#' -" -# ,,&* +(, $%,&'# 5,- ("#-$ "r
$%,&'# +'+%-#r$ 5,( +'+%- -# ()--#r $+&9 -" -# $%,&'#.
(2) Collets. C"#-$ 0"r ,,&* +(,$ $#r# -" $-#% )% "r ,&(r#+$#-# -+%#r $,?#$ $" -+- $+>$+&9 -""$ (+& # 0,--#' ,&-" +r*# $%,&'#
r#(#$$#$. T#! +r# $,,+r -" 'r,,&* +(, $"(9#-$ +&' $###$ #7(#%-
-+- -#,r -+%#r$ +r# &"- +,9#. S%r,&* ("#-$ +r# )$#' -" "' +&' 'r,#
$-r+,*->$+&9#' -""$. T# $%r,&* ("#- ()(9 ("&$,$-$ "0 + ("#-
+'+%-#r2 $%r,&* ("#-$2 +&' + ()% &)-. S%r,&* ("#-$ +r# $,,+r -" +-#
("#-$. T# ()% 0"r(#$ -# ("#- ,&-" -# +-,&* -+%#r2 (+)$,&* -# ("#-
-" ("$# "& -# $-r+,*- $+&9 "0 -# -"". C"#-$ +r# ++,+# ,& $##r+
0r+(-,"&+ $,?#$.
(') Spinle &apters. S%,&'# +'+%-#r$ +r# )$#' -" +'+%- +r"r$ +&',,&* ()--#r$ -" -# $-+&'+r' -+%#r$ )$#' 0"r ,,&* +(, $%,&'#$.
W,- -# %r"%#r $%,&'# +'+%-#r$2 +&! -+%#r#' "r $-r+,*- $+&9 ()--#r "r
+r"r (+& # 0,--#' -" +&! ,,&* +(, ,0 -# $,?#$ +&' -+%#r$ +r#
$-+&'+r'.
c. (ne)ing $i)ture 0,*)r# 6 "& -# 0""5,&* %+*#.
(%) T# ,&'#7,&* 0,7-)r# ,$ +& ,&',$%#&$+# +((#$$"r! 0"r -# ,,&*
+(,. B+$,(+!2 ,- ,$ + '#,(# 0"r ")&-,&* 5"r9%,#(#$ +&' r"-+-,&* -#
+ $%#(,0,#' +")&- +r")&' -# 5"r9%,#(#$ +7,$2 +$ 0r" " -""- $%+(# -"
+&"-#r "& + *#+r "r ()--#r.
(2) T# ,&'#7 0,7-)r# ("&$,$-$ "0 +& ,&'#7 #+'2 +$" (+#' + ',,',&*#+'2 +&' + 0""-$-"(92 $,,+r -" -# -+,$-"(9 "0 + +-#. T# ,&'#7 #+'
+&' -# 0""-$-"(9 +r# +--+(#' -" -# 5"r9-+# "0 -# ,,&* +(, ! T>
$"- "-$. A& ,&'#7 %+-# ("&-+,&,&* *r+')+-,"&$ ,$ )$#' -" ("&-r" -#
r"-+-,"& "0 -# ,&'#7 #+' $%,&'#. T# %+-# ,$ 0,7#' -" -# ,&'#7 #+'2
+&' +& ,&'#7 (r+&92 ("&(-#' -" -# ,&'#7 #+' $%,&'# ! + 5"r *#+r +&'
$+0-2 ,$ "#' +")- -# ,&'#7 %+-#. W"r9%,#(#$ +r# #' #-5##& (#&-#r$
! -# ,&'#7 #+' $%,&'# +&' 0""-$-"(9. W"r9%,#(#$ +! +$" # #' ,& +
()(9 ")&-#' -" -# ,&'#7 #+'
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MILLING MACHINE OPERATIONS - OD1644 - LESSON 1/TASK 1
FIGURE 6. INDEING FITURE.
$%,&'#2 "r +! # 0,--#' ',r#(-! ,&-" -# -+%#r $%,&'# r#(#$$ "0 $"#
,&'#7,&* 0,7-)r#$.
T#r# +r# +&! +r,+-,"&$ "0 -# ,&'#7,&* 0,7-)r#. T# &+# )&,#r$+
,&'#7 #+' ,$ +%%,#' -" +& ,&'#7 #+' '#$,*' -" %#r,- %"5#r
'r,6# "0 -/# $%,&'4# $" -/+- /#4,7#$ +! 1# ()- "&
-/#
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=G#+r ()--,&* +--+(/#&-= ,$ +&"-/#r &+# 0"r +&
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+(, +! # ,&(r#+$#' 0r" 1 1/ -" 6 -,#$ ! -# )$# "0 -# ,*>$%##'
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-5,$- 'r,$ 5,( )$- # 'r,#& +- + ,* r+-# "0 $%##' ,& "r'#r -" "-+,&+& #00,(,#&- $)r0+(# $%##'. T# +--+(#&- ,$ (+%#' -" -# (")& "0 -#
+(, +&' ,$ 'r,#& ! + $#- "0 *#+r$ 0r" -# ,,&* +(, $%,&'#.
#. *ertical Spinle &ttachment. T,$ +--+(#&- ("r-$ -# "r,?"&-+
$%,&'# "0 + "r,?"&-+ ,,&* +(, -" + #r-,(+ $%,&'#. I- ,$ (+%#'
-" -# (")& +&' 'r,#& 0r" -# "r,?"&-+ $%,&'#. I- ,&("r%"r+-#$
%r",$,"&$ 0"r $#--,&* -# #+' +- +&! +&*#2 0r" -# #r-,(+ -" -#
"r,?"&-+2 ,& + %+ +- r,*- +&*#$ -" -# +(, $%,&'#. E&' ,,&*
+&' 0+(# ,,&*
15
MILLING MACHINE OPERATIONS
-
OD1644 - LESSON 1/TASK
1
"%#r+-,"&$ +r# "r#
#+$,4!
+(("%4,$/#' 5,-/ -/,$ +--+(/#&-2 ')# -"
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,& %+,& ,#5.
0. +niversal Milling &ttachment. T,$ '#,(# ,$ $,,+r -" -# #r-,(+
$%,&'# +--+(#&- )- ,$ "r# #r$+-,#. T# ()--#r #+' (+& # $5,##' -"
+&! +&*# ,& +&! %+ 5#r#+$ -# #r-,(+ $%,&'# +--+(#&- "&! r"-+-#$,& " %+ 0r" -# "r,?"&-+ -" -# #r-,(+.
*. Circular Milling &ttachment. T,$ +--+(#&- ("&$,$-$ "0 + (,r()+r
5"r9-+# ("&-+,&,&* T>$"-$ 0"r ")&-,&* 5"r9%,#(#$. T# (,r()+r -+#
r#"#$ "& + +$# +--+(#' -" -# ,,&* +(, 5"r9-+#. T# +--+(#&-
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,0 %"5#r 'r,#&. I- +! # )$#' 0"r ,,&* (,r(#$2 +r($2 $#*#&-$2 +&'
(,r()+r $"-$2 +$ 5# +$ 0"r $"--,&* ,&-#r&+ +&' #7-#r&+ *#+r$. T#
-+# "0 -# +--+(#&- ,$ ',,'#' ,& '#*r##$.
. %,,set Boring Hea.T# "00$#- "r,&* #+' ,$ +& +--+(#&- -+- 0,-$ -"
-# ,,&* +(, $%,&'# +&' %#r,-$ + $,&*#>#'*# ()--,&* -""2 $)( +$+ +-# ()--#r ,-2 -" # ")&-#' "00>(#&-#r "& -# ,,&* +(,.
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"r#' 5,- -,$ +--+(#&-.
4. M")&-,&* +&' I&'#7,&* W"r9
a. eneral.
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(%) A& #00,(,#&- +&' %"$,-,# #-"' "0 "',&* 5"r9%,#(#$ -" -# ,,&*+(, -+# ,$ #$$#&-,+ ,0 -# +(, -"" ,$ -" # )$#' -" +'+&-+*#.
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16
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MILLING MACHINE OPERATIONS - OD1644 - LESSON 1/TASK 1
0,7-)r#$2 +# 9#!$ "r -"&*)#$ "& -# )&'#r$,'# "0 -#,r +$#$ $" -+- -#!
+! # "(+-#' ("rr#(-! ,& r#+-,"& -" -# T>$"-$.
b. Methos o, Mounting or/pieces.
(%) Clamping a or/piece "o "he "a#le. W#& (+%,&* 5"r9%,#(#$ -" -#5"r9-+# "0 -# ,,&* +(, -# -+# +&' 5"r9%,#(# $")' # 0r##
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%r"-#(-#' ! %,#(#$ "0 $"0- #-+. C+%$ $")' # %+(#' $@)+r#! +(r"$$
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,- 5, r#(#,# -# -r)$- "0 -# ()--#r 5#& #+! ()-$ +r# #,&* -+9#&.
(2) Clasping a or/piece to the &ngle Plate. W"r9%,#(#$ (+%#' -" -#+&*# %+-# +! # +(,' 5,- $)r0+(#$ %+r+#2 %#r%#&',()+r2 "r +- +&
+&*# -" + *,#& $)r0+(#. W#& )$,&* -,$ #-"' "0 "',&* + 5"r9%,#(#
%r#(+)-,"&$ $")' # -+9#&2 $,,+r -" -"$# #&-,"' ,& 1 +"# 0"r
(+%,&* -# 5"r9%,#(#>',r#(-! -" -# -+#. A&*# %+-#$ +! # "0 #,-#r
-# +'3)$-+# "r -# &"&+'3)$-+# -!%# +&' +r# *#r+! #' ,& +,*&-
! #+&$ "0 9#!$ "r -"&*)#$ -+- 0,- ,&-" -# -+# T>$"-$.
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"%#r+-,"&$ -" # %#r0"r#'. F,7-)r#$ +r# +5+!$ ("&$-r)(-#' -" $#()r#
+7,) (+%,&* $)r0+(#$ +&' +r# ),- -" )$# + ,&,) &)#r "0 (+%$ "r
"-$2 ,& "r'#r -" r#')(# -# -,# r#@),r#' 0"r $#--,&* )% -# 5"r9%,#(#.
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5,- -# -+# T>$"-$.
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MILLING MACHINE OPERATIONS - OD1644 - LESSON 1/TASK 1
4 Holing or/pieces Between Centers.T# ,&'#7,&* 0,7-)r# ,$ )$#' -"
$)%%"r- 5"r9%,#(#$ 5,( +r# (#&-#r#' "& "- #&'$. W#& -# %,#(# +$ ##&
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")&-#' #-5##& -# (#&-#r$2 +$ 5,- + +-#.
+ T#r# +r# -5" -!%#$ "0 +&'r#$ -+- +! # )$#' 0"r ")&-,&*
5"r9%,#(#$ #-5##& (#&-#r$. T# $",' +&'r# ,$ $+-,$0+(-"r! 0"r +&!
"%#r+-,"&$2 5,# -# +&'r# +,&* + -+%#r#' $+&9 ,$ %r#0#rr#' 5#&
0,--,&* -# 5"r9%,#(# ,&-" -# ,&'#7,&* #+' "0 -# $%,&'#.
A 3+(9 $(r#5 ,$ )$#' -" %r##&- $%r,&*,&* "0 "&* $#&'#r 5"r9%,#(#$
#' #-5##& (#&-#r$2 "r 5"r9%,#(#$ -+- #7-#&' $"# ',$-+&(# 0r" -#
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