UNIVERZITET U SARAJEVU
MAŠINSKI FAKULTET SARAJEVO PREDMET: CAM
SEMINARSKI RAD NC obrada u softveru Catia V5
Studentice:
Đelmid Almina Goga Ajla
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1.
Konstruisanje radnog komada u modulu Part Design
Izvršeno je konstruisanje ranog komaa u moulu Pa rt Design. Odabere se ravan u kojoj se konstruiše koma. Pomodu opcije Sketch vrši se konstruisanje ranog komaa oređenim alatima za konstruisanje geometrijskih oblika. (Slika 2)
U ovom slučaju, oabere se alat za crtanje kruga. Nakon što je krug nacrtan, oijele se željene dimenzije pomodu opcije Constraint , te se odabere opcija Exit Workbench , kako bi se ošlo u željeno okruženje. (Slika 1)
Slika 1. Prikaz opcija za konstruisanje komada ( Sketch; Constraint; Exit Workbench)
Slika 2. 2. Konstruisanje kruga pomodu alata za konstruisanje geometrijskih oblika
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Pomodu opcije Pa oijeli se ebljina ranom komau. Oabere se opcija Pa, pri čemu se otvori prozor Pa Definition, u kojem se orei željena ebljina ranog komaa. Klikom Kl ikom miša na Preview, dobija se izgled radnog komada sa dodijeljenom debljinom. (Slika 3)
Slika 3. Zadavanje debljine radnog komada pomodu komada pomodu opcije Pa
Nakon što se oijel i debljina komaa, označi se površina na kojoj se želi uraiti otvor, te se ulazi ponovo u Sketch-er. Crta se novi krug, po istom principu kao i prvobitno nacrtani krug, s tim da se zadaju nove dimenzije. Nacrtani krug prestavlja otvor koji se želi uraiti na ranom komau. (Slika 4)
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Poslije oređene pozicije i imenzije otvora, potrebno je izbušiti otvor na ranom komau. Pomodu opcije Pocket mogude je uraiti otvor na ranom komau. Otvara se prozor Pocket Definition, pri čemu se oijeljuje ubina otvora. (Slika 5)
Slika 5. 5. Izraa otvora na ranom komau pomodu opcije Pocket
Pomodu opcija Sketch, Pa i Pocket i pomodu njihovih alata konstruisan je rani koma. (S lika 6)
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2.
Obrada radnog komada u modulu Prizmatic Machining
Nakon što je konstruisan rani koma, otvara se moul Machining – Prizmatic Machining, nakon čega se pristupa obrai komaa s ciljem izrae NC programa. (Slika 7 i Slika 8)
Slika 7. Odabir modula Machining – Prizmatic Prizmatic Machining
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Otvara se nova traka alata pod nazivom Machining Operations. Sarži razne alate, pomodu kojih se
može vršiti obraa različitim postupcima gloanja. (Slika 9)
Slika 9. Traka sa različitim alatima za gloanje (Machining Operations)
Potrebno je izvršiti :
gloanje čeone površine (korištenjem opcije Facing);
gloanje utora (korištenjem opcije Pocketing);
konturno gloanje (korištenjem opcije Profile Contouring)
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2.1. Opcija Facing – glodanje čeone površine radnog komada Potrebno je najprije aktivirati opciju za gloanje čeone površine komaa, tj. opciju Facing. Time se oređuje čeona površina ijela koji de se obraiti. Klikom miša, opcija se aktivira. (Slika 10)
Slika 10 . Aktiviranje opcije za čeono gloanje (opcija Facing)
Otvara se prozor Facing.1 u kojem je potrebno pravilno definisati parametre koji su potrebni za NC
obrau. Prozor se sastoji o 5 ijelova. Ukoliko su ijelovi označeni zelenom bojom, znači a su pravilno definisani. (Slika 11)
Slika 11. Prikaz dijelova u okviru prozora Facing.1
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K likne se na površinu u otvorenom prozoru, U drugom dijelu definira se ravnina koja de se obrađivati. Klikne te na ogovarajudu ravninu na ranom komau. U ovom slučaju to je gornja površina komaa. Nakon efinisanja površine, orei se ubina obrae. Dva puta se klikne na opciju Offset of Bottom, pri čemu se otvori prozor u kojem se može zaati ubina obrae (npr. -1). (Slika 13)
Slika 13. 13. Definisanje ravnine na ranom komau na kojoj de se vršiti čeono gloanje
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Potrebno je efinisati brzinu prilaza alata ranom komau, kao i brzinu vradanja alata nakon izvršene obrade na radnom komadu. (Slika 15)
Slika 15. Definisanje brzine prilaza brzine prilaza alata i brzine vradanja alata
Također, potrebno je efinisati način prilaza alata ranom komau. U ovom slučaju je aksi jalni prilaz alata radnom komadu, odabere se opcija Axial i aktiviraju se opcije Approach i Retract. (S lika 16)
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2.2. Opcija Pocketing – glodanje otvora Aktiviranjem opcije Pocketing oređuje se površina komaa na kojoj de se vršiti gloanje otvora. Klikom miša, opcija Pocketing se aktivira.(Slika 17)
Slika 17. Aktiviranje opcije za glodanje otvora ( opcija Pocketing)
Otvara se prozor Pocketing.1, u kojem je potrebno definisati parametr e obrae, slično kao ko definisanja parametara pomodu opcije Facing. (Slika 18)
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Slika 19. 19. Definisanje ravnine na kojoj je potrebno izvršiti gloanje otvora
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Slika 21. 21. Definisanje brzine prilaza alata ranom komau i brzine vradanja alata o ranog komaa
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2.3. Opcija Profile Contouring – konturno glodanje Aktiviranjem opcije Profile Contouring mogude je izvrišiti konturno gloanje. Opcija se aktivira klikom miša, pri čemu se otvara prozor Profile Contouring.1. Označi se površina koja se želi obraiti, nakon čega se efinišu potrebni parametri za NC obrau, o kojih je prvi – putanja alata (Slika 23 i Slika 24)
Slika 23. Aktiviranje opcije Profile Contouring
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Slika 25. 25. Definisanje ravnine u kojoj de se vršiti konturno gloanje i zaavanje ubine obrae
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Izvršene su vije operacije konturnog gloanja, za vije različite površine, za unutrašnju i vanjsku površinu. Druga operacija konturnog gloanja izvoi se također pomodu opcije Profile Contouring. Otvara se novi prozor Profile Contouring.2, jer se vrši obraa na rugoj površ ini.
Slika 27. Definisanje parametara konturnog glodanja; putanja alata
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Slika 29. Definisanje parametara alata za konturno glodanje (prstasto glodalo)
Definisanje brzine prilaza i alata ranom komau i brzine vradanja alata o ranog komaa, kao i efinisanje načina prilaza alata ranom komau, vrši se isto kao ko prethonih obraa. (Slika 21 i
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3.
Prikaz svake obrade putem animacije
Nakon definisanih parametara obrade, daju se prikazi svake obrade putem animacije. Opcija Tool
Path Replay služi za pokretanje animacije, onosno za prikaz putanje alata. (Slika 30)
Slika 30. Prikaz izgleda opcije Tool Path Replay
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4.
Izrada NC programa pomoću softvera Catia V5
Prvi korak pri izradi NC programa jeste odabrati opciju Tools iz glavnog menia, te nakon toga odabrati Options. Otvara se prozor, prozor, u kojem je potrebno odabrati odabrati Post Processor, odabere odabere se IMS. (Slika 35 i Slika 36)
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NC ko u Catia V5 softveru mogude je izraiti oabirom opcije Generate NC Coe in Batch Mode, koja se nalazi u alatnoj traci NC Output Management. Klikom miša, vrši se aktiviranje opcije za dati radni komad. (Slika 37 i Slika 38)
Slika 37. Opcija Generate NC Code in Batch Mode
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Aktiviranjem opcije, otvara se prozor Generate NC Output in Batch Mode, u kojem je potrebno zadati
a je NC Coe : by program. Također je potrebno snimiti NC Coe u ogovarajudem foleru na računaru, kako bi se izvršilo i zvršilo pravilno ispisivanje NC Coa. Nakon toga potrebno je zaati ogovarajudi okument, u kojem je potrebno a ispisati NC Coe, što zavisi o upravljačke jeinice CNC mašine. U ovom slučaju je to Siemens840. Vrši se ispisivanje NC Coda, klikom na opciju Execute. ( Slika 39 i 40)
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