Wk1_Introduction to CNC

8/17/2019 Wk1_Introduction to CNC

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0300474 Computer Integrated0300474 Computer Integrated

ManufacturingManufacturingWeek 1: Basic CNCWeek 1: Basic CNC


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เกณฑการประเมนสอบยอย 10%สอบกลางภาค 30%สอบปลายภาค 30%การบาน/รายงาน/ปฏบตการ 1%ฝกปฏบตการใชเคร อง 10%เ!าเร"ยน %N!"#: เ!าเร"ยนนอยก#า $0%!องเ#ลาเร"ยน$ %ง&ม' &ม'ส$( )สอบปลายภาค


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!ut&ine!ut&ine

1' Introduction to CNC mac(ine1' Introduction to CNC mac(ine

)' Component and *unction of CNC)' Component and *unction of CNC

3' Coordinate +,stem3' Coordinate +,stem


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.istor, and ee&opment of.istor, and ee&opment of

"ec(no&og,"ec(no&og,Conentiona& M/CConentiona& M/C

NC M/CNC M/C

124$ + ir force5 MI" )1 mont(s 6124$ + ir force5 MI" )1 mont(s 6

CNC M/CCNC M/C

1227 1st commercia& NC m/cCINCINN"IC .89!"# ;#9"IC


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.istor, and ee&opment of.istor, and ee&opment of

"ec(no&og,"ec(no&og,


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Conentiona& s' CNC mac(ineConentiona& s' CNC mac(ine

Mac(ine +tructureMac(ine +tructure

"(e CNC mac(ine too&s are >asica&&, >ui&t"(e CNC mac(ine too&s are >asica&&, >ui&t

in t(e same ?a, as conentiona& mac(inein t(e same ?a, as conentiona& mac(inetoo&s' "(e difference &ies in t(e fact t(attoo&s' "(e difference &ies in t(e fact t(at

t(e mac(ine components re&eant fort(e mac(ine components re&eant for

turning and mi&&ing processes areturning and mi&&ing processes are

contro&&ed >, computers'contro&&ed >, computers'


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*unction*unction


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Conentiona& mac(ineConentiona& mac(ine e,ese,es5 (ands55 (ands5 >rain>rain55 ski&&ski&&

CNC mac(ineCNC mac(ine

=rogram=rogram Contro& unitContro& unit Motor Motor MotionMotion

Measuring @ 9ef&ection nitMeasuring @ 9ef&ection nit

No skill is required for operating CNC m/c .


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Conentiona& mac(ine

CNC mac(ine


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ifference >et?een Conentiona&ifference >et?een Conentiona&

M/C @ CNC M/CM/C @ CNC M/C ItemItem Conentiona&Conentiona&

mac(inemac(ineCNCCNC

mac(inemac(ine

1' Moement1' Moement cme scre? cme scre? Ba&& scre?Ba&& scre?

)' *eed)' *eed manua&manua& motor motor

3'measurement3'measurement manua&manua& inear sca&einear sca&e


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dantages of CNC dantages of CNC

*&eAi>&e5 (ig( accurac,*&eAi>&e5 (ig( accurac,

+(ort production time+(ort production time

Comp&eA s(apesComp&eA s(apes+(ort setting time+(ort setting time

No ski&& reuirementNo ski&& reuirement

+(ort inspection time/ (ig( ua&it, product+(ort inspection time/ (ig( ua&it, producto? costo? cost


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isadantages of CNCisadantages of CNC

.ig( mac(ine cost.ig( mac(ine cost

Comp&icated maintenanceComp&icated maintenance

+ki&& @ training are reuired for+ki&& @ training are reuired forprogramming and maintenance'programming and maintenance'

=arts are imported from a>oard'=arts are imported from a>oard'

.ig( too&ing cost.ig( too&ing cost"emperature5 (umidit, @ dust must >e"emperature5 (umidit, @ dust must >e

contro&&ed'contro&&ed'


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W(, CNCW(, CNC

.MN.MN IMI""I!NIMI""I!N


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)' Component and *unction of)' Component and *unction of

CNCCNC*eed drie*eed drie

Measuring s,stemMeasuring s,stem irect / Indirectirect / Indirect

Work spind&eWork spind&e

(,drau&ic(,drau&icCoo&ing s,stemCoo&ing s,stem reduce (eatreduce (eat

"oo& turret"oo& turret


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*eed drie


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Measuring

+,stem


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"oo& c(ange faci&ities"oo& c(ange faci&ities


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3' Coordinate +,stem3' Coordinate +,stem

3'1 CNC Aes3'1 CNC Aes


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Aes on a CNC &at(e Aes on a CNC &at(e


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Aes on a CNC mi&&ing mac(ine Aes on a CNC mi&&ing mac(ine


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Dero and reference points onDero and reference points on

CNCCNC


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Dero =oint of mac(ine on a CNC &at(eDero =oint of mac(ine on a CNC &at(e


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Mac(ine Dero =oint and Work part -ero

point on CNC mi&&ing mac(ine


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3') "?o t,pes of dimensioning in NC3') "?o t,pes of dimensioning in NC

programmingprogramming

>so&ute dimensioning E206so&ute dimensioning E206


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#Aercise 1#Aercise 1


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&า*ก'!องงาน&า*ก'!องงานE20E20

>so&ute >so&uteFF 88 E21E21

IncrementIncrementFF 88

=0=0 F0F0 8080 =0=0 F0F0 8080

=0


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#Aercise )#Aercise )


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Basics of coordinate point calculations


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Wk1_Introduction to CNC

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