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AE 2307 CAD / CAM LABORATORY

RAJALAKSHMI ENGINEERING COLLEGETHANDALAM

DEPARTMENT OF AERONAUTICAL ENGINEERING

LAB MANUAL

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CAM PART

PART -1

Computer-aided manufacturing

Computer-aided manufacturin(CAM) is the use o !o"#ute$-%&se' sot&$e toos

th&t &ssist e*+i*ee$s &*' "&!hi*ists i* "&*u&!tu$i*+ o$ #$otot,#i*+ #$o'u!t !o"#o*e*ts

.ts #$i"&$, #u$#ose is to !$e&te & &ste$ #$o'u!tio* #$o!ess &*' !o"#o*e*ts ith "o$e

#$e!ise 'i"e*sio*s &*' "&te$i& !o*siste*!, hi!h i* so"e !&ses uses o*, the $eui$e'

&"ou*t o $& "&te$i& (thus "i*i"ii*+ &ste) hie si"ut&*eous, $e'u!i*+ e*e$+,

!o*su"#tio* CAM is & #$o+$&""i*+ too th&t "&es it #ossi%e to "&*u&!tu$e #h,si!&

"o'es usi*+ !o"#ute$-&i'e' 'esi+* (CAD) #$o+$&"s CAM !$e&tes $e& ie e$sio*s o

!o"#o*e*ts 'esi+*e' ithi* & sot&$e #&!&+e

CNC Tec!no"o#

Nu"e$i!& Co*t$o (NC) is & sot&$e-%&se' "&!hi*e too !o*t$o te!h*iue

'eeo#e' &t M&ss&!husetts .*stitute o Te!h*oo+, (M.T) i* e&$, 1450s .t h&s *o

eoe' i*to & "&tu$e te!h*oo+, *o* &s Co"#ute$ Nu"e$i!& Co*t$o (CNC)

Athou+h "&6o$ #i!&tio*s o CNC ee* to'&, !o*ti*ue to %e i* "&!hi*i*+ it i*'s#i!&tio*s i* othe$ #$o!esses su!h &s sheet "et& o$i*+ *o*-t$&'itio*& "&!hi*i*+

&*' i*s#e!tio* Ro%ots &*' Ri' P$otot,#i*+ "&!hi*es &$e &so CNC !o*t$oe' .*

&!t &*, #$o!ess th&t !&* %e isu&ie' &s & seue*!e o "otio*s &*' sit!hi*+

u*!tio*s !&* %e !o*t$oe' %, CNC These "otio*s &*' sit!hi*+ u*!tio*s &$e i*#ut

i* the o$" o h&*u"e$i! i*st$u!tio*s CNC is the %&sis o ei%e &uto"&tio*

hi!h he#s i*'ust$ies !ut 'o* ti"e-to-"&$et &*' e*&%es &u*!h o ee* o

ou"e #$o'u!ts U*i"ite' "us!e #oe$ u*"&**e' o#e$&tio* i*'e#e*'e*t &es

!oo$'i*&te' th$ou+h sot&$e si"#iie' +e*e$i! tooi*+ ee* o$ the "ost !o"#e

6o%s &*' &!!u$&te !o*st$u!tio* &$e so"e o the s&ie*t e&tu$es o CNC

CNC Mac!inin

Auto"&ts &*' 8#e!i& Pu$#ose M&!hi*es (8PMs) $eui$e s#e!i& !&"s/ te"#&tes &*'

!ut!h setti*+s o$ e&!h #&$t M&*u&!tu$e o these !&"s/ te"#&tes is !ost, &*' so

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9u$the$"o$e !h&*+i*+ oe$ $o" o*e #&$t to the othe$ o* these "&!hi*es &so

!o*su"es !o*si'e$&%e ti"e The hi+h !ost &*' o*+ ti"e o these h&$' &uto"&te'

"&!hi*es to #$o'u!e #&$ts !&* %e 6ustiie' o*, i* "&ss #$o'u!tio* :ith the &'e*t o

&st $i+i' &*' &!!u$&te CNC "&!hi*es &*' so#histi!&te' CAM #&!&+es +e*e$&tio*

o NC #$o+$&"s &*' !h&*+e oe$ $o" o*e #$o'u!t to the othe$ &$e e&s, &*' &st &s it

'oes *ot $eui$e &*, "e!h&*i!& !h&*+e These i* !o*6u*!tio* ith &'&*!e' !utti*+

toos h&e "&'e ;i+h 8#ee' Cutti*+ (;8C) o h&$' "&te$i&s & $e&it, The$eo$e

CNC "&!hi*i*+ h&s %e!o"e & st&*'&$' "e&*s to #$o'u!e 'ies &*' "o's< too "&e$s

to'&, $eui$e EDM o*, o$ #$o'u!i*+ i*&!!essi%e $e+io*s sh&$# !o$*e$s ti*,

e&tu$es &*' 'esi$e' su$&!e u&it, .*t$i!&te &e$os#&!e #&$ts &$e $e&ie' th$ou+h =

&is CNC "&!hi*i*+ .*te$*et te!h*oo+, i* & +o%& i&+e e*&%es 'esi+*i*+ i* o*e

#&!e NC #$o+$&""i*+ &*' e$ii!&tio* i* &*othe$ #&!e &*' &!tu& "&!hi*i*+ i* ,et

&*othe$ #&!e

Ad$antae% of CNC

9ei%iit,

A!!u$&!,

8#ee'

8i"#iie' itu$i*+ &*' +e*e$i! !utti*+ toos

8to$&+e o "&!hi*i*+ si i* NC #$o+$&"s

Less sie' o#e$&to$s i 'o

Less &ti+ue to the o#e$&to$s

G-code%

G-Code o$ #$e#&$&to$, !o'e o$ u*!tio* &$e u*!tio*s i* the Nu"e$i!& !o*t$o#$o+$&""i*+ &*+u&+e The >-!o'es &$e the !o'es th&t #ositio* the too &*' 'o the &!tu&

o$ &s o##ose' to M-!o'es th&t "&*&+es the "&!hi*e< T o$ too-$e&te' !o'es 8 &*'

9 &$e too-8#ee' &*' too-9ee' &*' i*&, D-!o'es o$ too !o"#e*s&tio* The

#$o+$&""i*+ &*+u&+e o Nu"e$i!& Co*t$o (NC) is so"eti"es i*o$"&, !&e' G-

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code But i* &!tu&it, >-!o'es &$e o*, & #&$t o the NC-#$o+$&""i*+ &*+u&+e th&t

!o*t$os NC &*' CNC "&!hi*e toos

A %&si! ist o ?>@ o#e$&tio* !o'es is +ie* %eo These 'i$e!t "otio* o the too

1 >00 - Ri' "oe (*ot !utti*+)

2 >01 - Li*e&$ "oe

3 >02 - Co!ise !i$!u&$ "otio* >03 - Cou*te$!o!ise !i$!u&$ "otio*

= >0 - De

5 >0= - P&use (o$ o#e$&to$ i*te$e*tio*)7 >0 - A!!ee$&tio*

>04 - De!ee$&tio*

4 >17 - -, #&*e o$ !i$!u&$ i*te$#o&tio*

10 >1 - - #&*e o$ !i$!u&$ i*te$#o&tio*

11 >14 - ,- #&*e o$ !i$!u&$ i*te$#o&tio*12 >20 - tu$*i*+ !,!e o$ i*!h '&t& s#e!ii!&tio*

13 >21 - th$e&' !utti*+ !,!e o$ "et$i! '&t& s#e!ii!&tio*1 >2 - &!e tu$*i*+ !,!e

1= >2= - &it o$ i*#ut 1 to +o o (P$oi+ht Mi)

15 >25 - &it o$ i*#ut 1 to +o hi+h (P$oi+ht Mi)17 >2 - $etu$* to $ee$e*!e #oi*t

1 >24 - $etu$* $o" $ee$e*!e #oi*t

14 >31 - 8to# o* i*#ut (.NROB1 is hi+h) (P$oi+ht Mi)

20 >33-3= - th$e&' !utti*+ u*!tio*s (E"!o L&the)21 >3= - &it o$ i*#ut 2 to +o o (P$oi+ht Mi)

22 >35 - &it o$ i*#ut 2 to +o hi+h (P$oi+ht Mi)23 >0 - !utte$ !o"#e*s&tio* !&*!e2 >1 - !utte$ !o"#e*s&tio* to the et

2= >2 - !utte$ !o"#e*s&tio* to the $i+ht

25 >3 - too e*+th !o"#e*s&tio* #ositie27 > - too e*+th !o"#e*s&tio* *e+&tie

2 >=0 - P$eset #ositio*

24 >70 - set i*!h %&se' u*its o$ i*ishi*+ !,!e30 >71 - set "et$i! u*its o$ sto! $e"o&

31 >72 - i*'i!&te i*ishi*+ !,!e (EMCO L&the)

32 >72 - 3D !i$!u&$ i*te$#o&tio* !o!ise (P$oi+ht Mi)

33 >73 - tu$*i*+ !,!e !o*tou$ (EMCO L&the)3 >73 - 3D !i$!u&$ i*te$#o&tio* !ou*te$ !o!ise (P$oi+ht Mi)

3= >7 - &!i*+ !,!e !o*tou$ (E"!o L&the)

35 >71 - 'is&%e 350 'e+ &$!s (P$oi+ht Mi)37 >7= - #&tte$* $e#e&ti*+ (E"!o L&the)

3 >7=1 - e*&%e 350 'e+$ee &$!s (P$oi+ht Mi)

34 >75 - 'ee# hoe '$ii*+ !ut !,!e i* -&is0 >77 - !ut-i* !,!e i* -&is

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1 >7 - "uti#e th$e&'i*+ !,!e

2 >0 - ie' !,!e !&*!e

3 >1-4 - ie' !,!es s#e!iie' %, "&!hi*e too "&*u&!tu$e$s >1 - '$ii*+ !,!e (P$oi+ht Mi)

= >2 - st$&i+ht '$ii*+ !,!e ith 'e (P$oi+ht Mi)

5 >3 - '$ii*+ !,!e (EMCO L&the)7 >3 - #e! '$ii*+ !,!e (P$oi+ht Mi)

> - ti*+ !,!e (EMCO L&the)

4 >= - $e&"i*+ !,!e (EMCO L&the)=0 >= - %o$i*+ !,!e (P$oi+ht "i)

=1 >5 - %o$i*+ ith s#i*'e o &*' 'e !,!e (P$oi+ht Mi)

=2 >4 - %o$i*+ !,!e ith 'e (P$oi+ht Mi)

=3 >40 - &%soute 'i"e*sio* #$o+$&"= >41 - i*!$e"e*t& 'i"e*sio*s

== >42 - 8#i*'e s#ee' i"it

=5 >43 - Coo$'i*&te s,ste" setti*+

=7 >4 - 9ee' $&te i* i#" (EMCO L&the)= >4= - 9ee' $&te i* i#$ (EMCO L&the)

=4 >45 - 8u$&!e !utti*+ s#ee' (EMCO L&the)50 >47 - Rot&tio*& s#ee' $#" (EMCO L&the)

51 >4 - ith'$& the too to the st&$ti*+ #oi*t o$ ee' #e$ "i*ute

52 >44 - ith'$& the too to & s&e #&*e o$ ee' #e$ $eoutio*53 >101 - 8#i*e i*te$#o&tio* (P$oi+ht Mi)

M-Code%

M-Co'es !o*t$o "&!hi*e u*!tio*s &*' these i*!u'e1 M00 - #$o+$&" sto#

2 M01 - o#tio*& sto# usi*+ sto# %utto*

3 M02 - e*' o #$o+$&" M03 - s#i*'e o* C:

= M0 - s#i*'e o* CC:

5 M0= - s#i*'e o

7 M05 - too !h&*+e M07 - oo' ith !oo&*t

4 M0 - "ist ith !oo&*t

10 M0 - tu$* o* &!!esso$, 1 (120AC outet) (P$oi+ht Mi)11 M04 - !oo&*t o

12 M04 - tu$* o &!!esso$, 1 (120AC outet) (P$oi+ht Mi)

13 M10 - tu$* o* &!!esso$, 2 (120AC outet) (P$oi+ht Mi)

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1 M11 - tu$* o &!!esso$, 2 (120AC outet) (P$oi+ht Mi) o$

too !h&*+e

1= M17 - su%$outi*e e*'15 M20 - t&isto! %&! (EMCO L&the)

17 M20 - Ch&i* to *et #$o+$&" (P$oi+ht Mi)

1 M21 - t&isto! o$&$' (EMCO L&the)14 M22 - :$ite !u$$e*t #ositio* to '&t& ie (P$oi+ht Mi)

20 M2= - o#e* !hu! (EMCO L&the)

21 M2= - set out#ut 1 o (P$oi+ht Mi)22 M25 - !ose !hu! (EMCO L&the)

23 M25 - set out#ut 1 o* (P$oi+ht Mi)

2 M30 - e*' o te ($ei*')

2= M3= - set out#ut 2 o (P$oi+ht Mi)25 M35 - set out#ut 2 o* (P$oi+ht Mi)

27 M3 - #ut ste##e$ "oto$s o* o #oe$ st&*'%, (P$oi+ht Mi)

2 M7 - $est&$t & #$o+$&" !o*ti*uous, o$ & ie' *u"%e$ o ti"es

(P$oi+ht Mi)24 M71 - #u %oi*+ o* (EMCO L&the)

30 M72 - #u %oi*+ o (EMCO L&the)31 M45 - !o"#e*s&te o$ $ou*'e' ete$*& !u$es

32 M47 - !o"#e*s&te o$ sh&$# ete$*& !u$es

33 M4 - su%#$o+$&" !&3 M44 - $etu$* $o" su%#$o+$&" 6u"# i*st$u!tio*

3= M101 - "oe -&is ho"e (P$oi+ht Mi)

35 M102 - "oe ,-&is ho"e (P$oi+ht Mi)

37 M103 - "oe -&is ho"e (P$oi+ht Mi)

CNC PROGRAMMING

The !oo$'i*&tes &$e &"ost e!usie, !&$tesi&* &*' the o$i+i* is o* the o$#ie!e

9o$ & &the the i*ee'/$&'i& &is is the -&is the !&$$i&+e/e*+th &is is the -&is

The$e is *o *ee' o$ & ,-&is %e!&use the too "oes i* & #&*e th$ou+h the $ot&tio*&

!e*te$ o the o$ Coo$'i*&tes o* the o$ #ie!e sho* %eo &$e $e&tie to theo$

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CNC at!e " CNC turning center

CNC &thes &$e $i', $e#&!i*+ the o'e$ #$o'u!tio* &thes ("utis#i*'e et!) 'ue to

thei$ e&se o setti*+ &*' o#e$&tio* The, &$e 'esi+*e' to use "o'e$* !&$%i'e tooi*+ &*'

u, utiie "o'e$* #$o!esses The #&$t "&, %e 'esi+*e' &*' the too #&ths #$o+$&""e'

%, the CAD/CAM #$o!ess &*' the $esuti*+ ie u#o&'e' to the "&!hi*e &*' o*!e set

&*' t$&ie' the "&!hi*e i !o*ti*ue to tu$* out #&$ts u*'e$ the o!!&sio*& su#e$isio* o

&* o#e$&to$The "&!hi*e is !o*t$oe' ee!t$o*i!&, i& & !o"#ute$ "e*u st,e i*te$&!e42 U0 :0=0 8200042 U0 :0=0 82000041 >2 I02 F0 Y00 >41 >2 I0 2 F0 Y02 F0 Y0 I0 M30 O9 8PAR COMPONENT8

Aim'

To '$& the 'esi+* &*' "o'ei*+ o s#&$ !o"#o*e*ts usi*+ the CAT.A #&!&+e

Command% u%ed'

Li*es

Ci$!e

Et$u'e

Po!eti*+

Muti!o#,

E'+e 9iet

Too"% reuired

CAT.A #&!&+e

+rocedure

(. O#e* the sot&$e too CAT.A #&!&+e

/. C$e&te the *e ie &*' s&e it i* the 'i$e!to$,

0. 8et the u*its &*' i"its o$ the 'is#&, s!$ee*

1. Use the i*e !o""&*' &*' &s #e$ the +ie* 'i"e*sio*s

2. D$& the s#&$ &sse"%, %, the +ie* 'i"e*sio*s

3. M&$ the 'i"e*sio*s o$ the $iete' 6o%4. 8&e the 'i&+$&" i* s#e!iie' 'i$e!to$,

Re%u"t

Thus the $eui$e' '$&i*+ &s 'esi+*e' &*' "o'ee' &s #e$ the +ie* 'i"e*sio* &*'e$iie'

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E&periment no' 0

De%in and Mode"in of Aerofoi" %tructure%Aim'

To '$& the Desi+* &*' Mo'ei*+ o Ae$ooi st$u!tu$es usi*+ the CAT.A

#&!&+e

Command% u%ed'

Dots

8#i*e

Coo$'i*&te #oi*ts

P&*e

Lot

Too"% reuired

CAT.A #&!&+e

+rocedure'

1 O#e* the CAT.A #&!&+e

2 C$e&te the *e ie &*' s&e it i* the 'i$e!to$,3 8et the u*its &*' i"its o$ the 'is#&, s!$ee*

Use the i*e !o""&*' &*' '$& &s #e$ the +ie* 'i"e*sio*s

= D$& the '$&i*+ %, the +ie* 'i"e*sio*s5 M&$ the 'i"e*sio*s o$ the $iete' 6o%

7 8&e the 'i&+$&" i* s#e!iie' 'i$e!to$,

Re%u"tThus the $eui$e' '$&i*+ &s 'esi+*e' &*' "o'ee' &s #e$ the +ie* 'i"e*sio* &*'e$iie'

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E&periment no' 1

De%in and Mode"in of cut %ection of 5in%

Aim'

To '$& the Desi+* &*' Mo'ei*+ o !ut se!tio* o i*+s usi*+ the CAT.A

#&!&+e

Command% u%ed'

8#i*e

Coo$'i*&te #oi*ts

P&*e

Lot

Too"% reuired CAT.A #&!&+e

+rocedure

1 O#e* the CAT.A #&!&+e

2 C$e&te the *e ie &*' s&e it i* the 'i$e!to$,

3 8et the u*its &*' i"its o$ the 'is#&, s!$ee*

Use the i*e !o""&*' &*' '$& the &s #e$ the +ie* 'i"e*sio*s= D$& the 'i&+$&" %, the +ie* 'i"e*sio*s

5 M&$ the 'i"e*sio*s o$ the $iete' 6o%

7 8&e the 'i&+$&" i* s#e!iie' 'i$e!to$,

Re%u"t

Thus the $eui$e' '$&i*+ &s 'esi+*e' &*' "o'ee' &s #e$ the +ie* 'i"e*sio* &*'e$iie'

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E&periment no' 2

De%in and Mode"in of mac!ine component%

Aim'

To '$& the Desi+* &*' Mo'ei*+ o "&!hi*e !o"#o*e*ts usi*+ the CAT.A#&!&+e

Command% u%ed'

Li*es

>$ooe

8h&t

P&*e

Po!eti*+

T$&*s&te

Too"% reuired

CAT.A #&!&+e

+rocedure

1 O#e* the CAT.A #&!&+e

2 C$e&te the *e ie &*' s&e it i* the 'i$e!to$,

3 8et the u*its &*' i"its o$ the 'is#&, s!$ee* Use the i*e !o""&*' &*' '$& the &s #e$ the +ie* 'i"e*sio*s

= D$& the 'i&+$&" usi*+ !o""&*'s %, the +ie* 'i"e*sio*s5 M&$ the 'i"e*sio*s 8&e the 'i&+$&" i* s#e!iie' 'i$e!to$,

Re%u"t

Thus the $eui$e' '$&i*+ &s 'esi+*e' &*' "o'ee' &s #e$ the +ie* 'i"e*sio* &*'e$iie'

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E&periment no' 3

De%in and Mode"in of mac!ine component% 6pu%! pu"" rod.

Aim'To '$& the Desi+* &*' Mo'ei*+ o "&!hi*e !o"#o*e*ts (#ush #u $o') usi*+ theCAT.A #&!&+e

Command% u%ed'

Li*es

>$ooe

8h&t

P&*e

Po!eti*+

T$&*s&te

Too"% reuired

CAT.A #&!&+e

+rocedure

1 O#e* the sot&$e too CAT.A #&!&+e

2 C$e&te the *e ie &*' s&e it i* the 'i$e!to$,3 8et the u*its &*' i"its o$ the 'is#&, s!$ee*

Use the i*e !o""&*' &*' '$& the &s #e$ the +ie* 'i"e*sio*s

= M&$ the 'i"e*sio*s o$ the $iete' 6o%5 8&e the 'i&+$&" i* s#e!iie' 'i$e!to$,

Re%u"t

Thus the $eui$e' '$&i*+ &s 'esi+*e' &*' "o'ee' &s #e$ the +ie* 'i"e*sio* &*'

e$iie'

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E&periment no' 4

DESIGN AND ANAL7SIS O) TR*SS

Aim' To 'esi+* &*' &*&,sis o t$uss usi*+ the CAT.A #&!&+e &*' AN8Y8 sot&$e

Command% u%ed'

Li*es

A$!s

Ci$!e

Re+io*

;&t!hi*+

Too"% reuired

CAT.A #&!&+e &*' AN8Y8 sot&$e

+rocedure

1 O#e* the sot&$e too CAT.A #&!&+e

2 C$e&te the *e ie &*' s&e it i* the 'i$e!to$,3 8et the u*its &*' i"its o$ the 'is#&, s!$ee*

Use the i*e !o""&*' &*' '$& &s #e$ the +ie* 'i"e*sio*s

= M&$ the 'i"e*sio*s o$ the $iete' 6o%5 8&e the 'i&+$&" i* s#e!iie' 'i$e!to$,

7 !o*'u!t the st$u!tu$& &*&,sis usi*+ AN8Y8

Re%u"t

Thus the $eui$e' '$&i*+ &s 'esi+*e' &*' "o'ee' &*' &*&,e'

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E&periment no' 8

DESIGN AND ANAL7SIS O) 9EAM DISTRI9*ED LOAD

Aim'

To 'esi+* &*&,sis o %e&" 'ist$i%ute' o&' the CAT.A #&!&+e &*' AN8Y8 sot&$e

Command% u%ed'

Li*es

A$!s

Ci$!e

Re+io*

;&t!hi*+

Too"% reuired CAT.A #&!&+e &*' AN8Y8 sot&$e

+rocedure

1 O#e* the sot&$e too CAT.A #&!&+e

2 C$e&te the *e ie &*' s&e it i* the 'i$e!to$,

3 8et the u*its &*' i"its o$ the 'is#&, s!$ee* Use the i*e !o""&*' &*' '$& the &s #e$ the +ie* 'i"e*sio*s

= M&$ the 'i"e*sio*s o$ the $iete' 6o%

5 8&e the 'i&+$&" i* s#e!iie' 'i$e!to$,7 !o*'u!t the st$u!tu$& &*&,sis usi*+ AN8Y8

Re%u"t

Thus the $eui$e' '$&i*+ &s 'esi+*e' &*' "o'ee' &*' &*&,e'