Umshini Wokugaya we-CNC: Inketho Enhle Kakhulu Yokukhiqiza Okuthuthukile
Esigabeni sokukhiqiza kwesimanje, umshini wokugaya we-CNC usuphenduke umshini obalulekile obalulekile ngokusebenza kwawo okuvelele kanye namakhono okucubungula aphezulu. Umshini wokugaya we-CNC uhlanganisa uhlelo lokulawula idijithali emshinini wokugaya ojwayelekile futhi ungenza imisebenzi yokugaya eyinkimbinkimbi futhi enembile ngaphansi kokulawulwa okunembile kwamakhodi ohlelo. Okulandelayo, ake sihlole ukusebenza okuhle kakhulu komshini wokugaya we-CNC nokuthi izingxenye zawo ezihlukahlukene zisebenza kanjani ndawonye ukuze ilethe ukukhiqizwa okuphumelelayo nokusezingeni eliphezulu embonini yokukhiqiza.
Esigabeni sokukhiqiza kwesimanje, umshini wokugaya we-CNC usuphenduke umshini obalulekile obalulekile ngokusebenza kwawo okuvelele kanye namakhono okucubungula aphezulu. Umshini wokugaya we-CNC uhlanganisa uhlelo lokulawula idijithali emshinini wokugaya ojwayelekile futhi ungenza imisebenzi yokugaya eyinkimbinkimbi futhi enembile ngaphansi kokulawulwa okunembile kwamakhodi ohlelo. Okulandelayo, ake sihlole ukusebenza okuhle kakhulu komshini wokugaya we-CNC nokuthi izingxenye zawo ezihlukahlukene zisebenza kanjani ndawonye ukuze ilethe ukukhiqizwa okuphumelelayo nokusezingeni eliphezulu embonini yokukhiqiza.
I. Ukwakhiwa kanye Nemisebenzi Yomshini Wokugaya we-CNC
Umshini wokugaya we-CNC uvamise ukwakhiwa izingxenye ezimbalwa ezinkulu ezifana nesistimu ye-CNC, isistimu yokushayela eyinhloko, isistimu ye-feed servo, uhlelo lokupholisa nokuthambisa, amadivaysi asizayo, nezingxenye zesisekelo samathuluzi omshini, futhi ingxenye ngayinye idlala indima ebalulekile.
Umshini wokugaya we-CNC uvamise ukwakhiwa izingxenye ezimbalwa ezinkulu ezifana nesistimu ye-CNC, isistimu yokushayela eyinhloko, isistimu ye-feed servo, uhlelo lokupholisa nokuthambisa, amadivaysi asizayo, nezingxenye zesisekelo samathuluzi omshini, futhi ingxenye ngayinye idlala indima ebalulekile.
Isistimu ye-CNC
Uhlelo lwe-CNC luwubuchopho obuwumgogodla womshini wokugaya we-CNC, onesibopho sokwenza uhlelo lwemishini ye-CNC kanye nokulawula ngokunembile umzila wokunyakaza kanye namapharamitha wokucubungula wethuluzi lomshini. Inemisebenzi ehlakaniphe kakhulu futhi ezenzakalelayo futhi ingafinyelela amasu okucubungula ayinkimbinkimbi njengokucubungula ijika kanye nokucutshungulwa kwezinhlangothi ezintathu. Ngesikhathi esifanayo, izinhlelo ezithuthukisiwe ze-CNC nazo zinemisebenzi efana nesinxephezelo samaphutha nokulawula okuguquguqukayo, okuqhubeka nokuthuthukisa ukunemba kokucubungula kanye nekhwalithi yendawo.
Uhlelo lwe-CNC luwubuchopho obuwumgogodla womshini wokugaya we-CNC, onesibopho sokwenza uhlelo lwemishini ye-CNC kanye nokulawula ngokunembile umzila wokunyakaza kanye namapharamitha wokucubungula wethuluzi lomshini. Inemisebenzi ehlakaniphe kakhulu futhi ezenzakalelayo futhi ingafinyelela amasu okucubungula ayinkimbinkimbi njengokucubungula ijika kanye nokucutshungulwa kwezinhlangothi ezintathu. Ngesikhathi esifanayo, izinhlelo ezithuthukisiwe ze-CNC nazo zinemisebenzi efana nesinxephezelo samaphutha nokulawula okuguquguqukayo, okuqhubeka nokuthuthukisa ukunemba kokucubungula kanye nekhwalithi yendawo.
I-Main Drive System
Isistimu yokushayela eyinhloko ihlanganisa ibhokisi lokuphotha kanye nesistimu ye-spindle drive. Iqhaza layo elikhulu ukubopha ithuluzi bese ushayela ithuluzi ukuze lijikeleze ngesivinini esikhulu. Ibanga lesivinini kanye ne-torque ephumayo ye-spindle inomthelela oqondile ekusebenzeni kahle kokucubungula kanye nekhwalithi. Ukuze kuhlangatshezwane nezidingo ezihlukene zokucutshungulwa, i-spindle yemishini yokugaya ye-CNC yesimanje ngokuvamile inomsebenzi wesivinini esiguquguqukayo futhi ingafinyelela ukulawulwa kwesivinini esingenasinyathelo phakathi kwebanga elibanzi ukuze ivumelane nezidingo zokucubungula zezinto namathuluzi ahlukene.
Isistimu yokushayela eyinhloko ihlanganisa ibhokisi lokuphotha kanye nesistimu ye-spindle drive. Iqhaza layo elikhulu ukubopha ithuluzi bese ushayela ithuluzi ukuze lijikeleze ngesivinini esikhulu. Ibanga lesivinini kanye ne-torque ephumayo ye-spindle inomthelela oqondile ekusebenzeni kahle kokucubungula kanye nekhwalithi. Ukuze kuhlangatshezwane nezidingo ezihlukene zokucutshungulwa, i-spindle yemishini yokugaya ye-CNC yesimanje ngokuvamile inomsebenzi wesivinini esiguquguqukayo futhi ingafinyelela ukulawulwa kwesivinini esingenasinyathelo phakathi kwebanga elibanzi ukuze ivumelane nezidingo zokucubungula zezinto namathuluzi ahlukene.
Okuphakelayo Servo System
Isistimu ye-servo yesiphakeli iqukethe injini yokuphakelayo kanye ne-activator yesiphakeli. Ifinyelela ukunyakaza okuhlobene phakathi kwethuluzi nesiqeshana sokusebenza ngokuya ngesivinini sokuphakelayo kanye ne-trajectory esethwe wuhlelo. Lokhu kulawula ukunyakaza okunembile kwenza umshini wokugaya we-CNC ukwazi umshini izingxenye ezihlukahlukene eziyinkimbinkimbi, okuhlanganisa imigqa eqondile, amajika, ama-arcs, njll. Ngaphezu kwalokho, uhlelo lwe-servo lokuphakelayo lunesivinini sokuphendula esisheshayo nokunemba okuphezulu, okungaqinisekisa ukuzinza nokuvumelana kokucubungula.
Isistimu ye-servo yesiphakeli iqukethe injini yokuphakelayo kanye ne-activator yesiphakeli. Ifinyelela ukunyakaza okuhlobene phakathi kwethuluzi nesiqeshana sokusebenza ngokuya ngesivinini sokuphakelayo kanye ne-trajectory esethwe wuhlelo. Lokhu kulawula ukunyakaza okunembile kwenza umshini wokugaya we-CNC ukwazi umshini izingxenye ezihlukahlukene eziyinkimbinkimbi, okuhlanganisa imigqa eqondile, amajika, ama-arcs, njll. Ngaphezu kwalokho, uhlelo lwe-servo lokuphakelayo lunesivinini sokuphendula esisheshayo nokunemba okuphezulu, okungaqinisekisa ukuzinza nokuvumelana kokucubungula.
Ukupholisa kanye Nesistimu Yokugcoba
Uhlelo lokupholisa nokugcoba ludlala indima ebalulekile enqubweni yokucubungula. Ingakwazi ukwehlisa ngempumelelo izinga lokushisa kwethuluzi kanye ne-workpiece, inciphise ukungqubuzana nokuguga, futhi yandise impilo yesevisi yethuluzi. Ngesikhathi esifanayo, ukupholisa okuhle nokugcoba kungathuthukisa izinga eliphezulu lokucubungula futhi kuvimbele ukunamathela kwe-chip kanye nokwakheka kwemiphetho eyakhelwe phezulu.
Uhlelo lokupholisa nokugcoba ludlala indima ebalulekile enqubweni yokucubungula. Ingakwazi ukwehlisa ngempumelelo izinga lokushisa kwethuluzi kanye ne-workpiece, inciphise ukungqubuzana nokuguga, futhi yandise impilo yesevisi yethuluzi. Ngesikhathi esifanayo, ukupholisa okuhle nokugcoba kungathuthukisa izinga eliphezulu lokucubungula futhi kuvimbele ukunamathela kwe-chip kanye nokwakheka kwemiphetho eyakhelwe phezulu.
Amadivayisi Asizayo
Izinsiza ezisizayo zihlanganisa i-hydraulic, i-pneumatic, i-lubrication, amasistimu okupholisa, kanye namadivayisi okukhipha ama-chip kanye nokuvikela. Amasistimu we-hydraulic kanye ne-pneumatic ahlinzeka ngamandla ezenzo ezithile zethuluzi lomshini, njengokubopha nokukhulula. Uhlelo lokugcoba luqinisekisa ukusebenza okuvamile kwengxenye ngayinye ehambayo yethuluzi lomshini futhi kunciphisa ukuguga. Idivayisi yokukhipha ama-chip ingasusa ngokushesha ama-chips akhiqizwe phakathi nenqubo yokucubungula ukuze kugcinwe indawo yokusebenza ehlanzekile nephephile. Idivayisi yokuvikela ivikela opharetha ekushayeni ama-chips nezinye izinto eziyingozi.
Izinsiza ezisizayo zihlanganisa i-hydraulic, i-pneumatic, i-lubrication, amasistimu okupholisa, kanye namadivayisi okukhipha ama-chip kanye nokuvikela. Amasistimu we-hydraulic kanye ne-pneumatic ahlinzeka ngamandla ezenzo ezithile zethuluzi lomshini, njengokubopha nokukhulula. Uhlelo lokugcoba luqinisekisa ukusebenza okuvamile kwengxenye ngayinye ehambayo yethuluzi lomshini futhi kunciphisa ukuguga. Idivayisi yokukhipha ama-chip ingasusa ngokushesha ama-chips akhiqizwe phakathi nenqubo yokucubungula ukuze kugcinwe indawo yokusebenza ehlanzekile nephephile. Idivayisi yokuvikela ivikela opharetha ekushayeni ama-chips nezinye izinto eziyingozi.
Izingxenye Zesisekelo Sethuluzi Lomshini
Izingxenye zesisekelo samathuluzi omshini ngokuvamile zibhekisela kusisekelo, ikholomu, ne-crossbeam, njll. Bakha isisekelo nohlaka lwalo lonke ithuluzi lomshini. Ukuqina nokuzinza kwezingxenye zesisekelo samathuluzi omshini kuthinta ngokuqondile ukunemba kokucubungula nokusebenza okunamandla kwethuluzi lomshini. Izingxenye zesisekelo samathuluzi omshini wekhwalithi ephezulu zingamelana namandla amakhulu okusika nokudlidliza, okuqinisekisa ukugcinwa kokunemba kwethuluzi lomshini ngesikhathi sokusetshenziswa kwesikhathi eside.
Izingxenye zesisekelo samathuluzi omshini ngokuvamile zibhekisela kusisekelo, ikholomu, ne-crossbeam, njll. Bakha isisekelo nohlaka lwalo lonke ithuluzi lomshini. Ukuqina nokuzinza kwezingxenye zesisekelo samathuluzi omshini kuthinta ngokuqondile ukunemba kokucubungula nokusebenza okunamandla kwethuluzi lomshini. Izingxenye zesisekelo samathuluzi omshini wekhwalithi ephezulu zingamelana namandla amakhulu okusika nokudlidliza, okuqinisekisa ukugcinwa kokunemba kwethuluzi lomshini ngesikhathi sokusetshenziswa kwesikhathi eside.
II. Izici Zokusebenza Eziyinhloko Zomshini Wokugaya we-CNC
High-Precision Processing
Umshini wokugaya we-CNC wamukela uhlelo lokulawula lwedijithali futhi ungafinyelela ukunemba kokucubungula ezingeni le-micrometer noma ngaphezulu. Ngokulawula isikhundla esinembile, ukulawula isivinini, nemisebenzi yesinxephezelo samathuluzi, amaphutha abantu angaqedwa ngempumelelo, kuthuthukiswe ukunemba kokucubungula nokuvumelana. Isibonelo, lapho ucubungula izingxenye ezinemba okuphezulu njengesikhunta nezingxenye ze-aerospace, umshini wokugaya we-CNC ungahlangabezana nezidingo eziqinile zokubekezelela ubukhulu kanye nejometri.
High-Precision Processing
Umshini wokugaya we-CNC wamukela uhlelo lokulawula lwedijithali futhi ungafinyelela ukunemba kokucubungula ezingeni le-micrometer noma ngaphezulu. Ngokulawula isikhundla esinembile, ukulawula isivinini, nemisebenzi yesinxephezelo samathuluzi, amaphutha abantu angaqedwa ngempumelelo, kuthuthukiswe ukunemba kokucubungula nokuvumelana. Isibonelo, lapho ucubungula izingxenye ezinemba okuphezulu njengesikhunta nezingxenye ze-aerospace, umshini wokugaya we-CNC ungahlangabezana nezidingo eziqinile zokubekezelela ubukhulu kanye nejometri.
Ukukhiqiza Okusezingeni Eliphezulu
Izinga lokuzenzakalelayo lomshini wokugaya we-CNC liphezulu futhi lingafinyelela ukucubungula okuqhubekayo kanye nokucubungula okuhlanganisiwe kwezinqubo eziningi. Izindawo eziningi zingacutshungulwa nge-clamping eyodwa, kunciphisa kakhulu inani lama-clamping nesikhathi esiyisizayo futhi kuthuthukiswe ukusebenza kahle kokukhiqiza. Ngaphezu kwalokho, isivinini sokuphakelayo esisheshayo kanye nesivinini esikhulu sokuphotha somshini wokugaya we-CNC sinikeza isiqinisekiso esiqinile sokucubungula okuphezulu.
Izinga lokuzenzakalelayo lomshini wokugaya we-CNC liphezulu futhi lingafinyelela ukucubungula okuqhubekayo kanye nokucubungula okuhlanganisiwe kwezinqubo eziningi. Izindawo eziningi zingacutshungulwa nge-clamping eyodwa, kunciphisa kakhulu inani lama-clamping nesikhathi esiyisizayo futhi kuthuthukiswe ukusebenza kahle kokukhiqiza. Ngaphezu kwalokho, isivinini sokuphakelayo esisheshayo kanye nesivinini esikhulu sokuphotha somshini wokugaya we-CNC sinikeza isiqinisekiso esiqinile sokucubungula okuphezulu.
Ikhono Lokucubungula Umumo Oyinkimbinkimbi
Ngohlelo oluthuthukisiwe lwe-CNC nokulawula ukunyakaza okuvumelana nezimo, umshini wokugaya we-CNC ungamshini izingxenye ezihlukahlukene ezimise okuyinkimbinkimbi, njengendawo egobile, izimbobo ezingajwayelekile, nemisele ezungezayo. Noma ngabe kusekukhiqizweni kwesikhunta, ukucutshungulwa kwezingxenye zezimoto, noma ukukhiqizwa kwemishini yezokwelapha, umshini wokugaya we-CNC ungahlangabezana nezidingo zokucubungula izingxenye eziyinkimbinkimbi.
Ngohlelo oluthuthukisiwe lwe-CNC nokulawula ukunyakaza okuvumelana nezimo, umshini wokugaya we-CNC ungamshini izingxenye ezihlukahlukene ezimise okuyinkimbinkimbi, njengendawo egobile, izimbobo ezingajwayelekile, nemisele ezungezayo. Noma ngabe kusekukhiqizweni kwesikhunta, ukucutshungulwa kwezingxenye zezimoto, noma ukukhiqizwa kwemishini yezokwelapha, umshini wokugaya we-CNC ungahlangabezana nezidingo zokucubungula izingxenye eziyinkimbinkimbi.
Ukuguquguquka Okuhle Nokuvumelana nezimo
Umshini wokugaya we-CNC ungakwazi ukuzivumelanisa nokucutshungulwa kwezingxenye ngezinto ezihlukahlukene, izimo, nosayizi ngokushintsha amathuluzi nokulungisa uhlelo lokucubungula. Lokhu kuguquguquka nokuguquguquka kunikeza umshini wokugaya we-CNC inzuzo enkulu ekukhiqizweni kwe-batch encane kanye nezinhlobonhlobo eziningi futhi ungaphendula ngokushesha ezinguqukweni ezifunwa yimakethe.
Umshini wokugaya we-CNC ungakwazi ukuzivumelanisa nokucutshungulwa kwezingxenye ngezinto ezihlukahlukene, izimo, nosayizi ngokushintsha amathuluzi nokulungisa uhlelo lokucubungula. Lokhu kuguquguquka nokuguquguquka kunikeza umshini wokugaya we-CNC inzuzo enkulu ekukhiqizweni kwe-batch encane kanye nezinhlobonhlobo eziningi futhi ungaphendula ngokushesha ezinguqukweni ezifunwa yimakethe.
Kulula Ukubona Ukukhiqiza Okuzenzakalelayo
Umshini wokugaya we-CNC ungahlanganiswa nezinto zokusebenza ezifana namadivayisi okulayisha nokuthulula okuzenzakalelayo namarobhothi ukuze enze ulayini wokukhiqiza ozenzakalelayo futhi uzuze ukukhiqizwa okungenamuntu noma okungenamuntu. Lokhu akugcini nje ngokuthuthukisa ukusebenza kahle kokukhiqiza kodwa futhi kunciphisa izindleko zabasebenzi futhi kuthuthukisa ukuzinza kwekhwalithi yomkhiqizo.
Umshini wokugaya we-CNC ungahlanganiswa nezinto zokusebenza ezifana namadivayisi okulayisha nokuthulula okuzenzakalelayo namarobhothi ukuze enze ulayini wokukhiqiza ozenzakalelayo futhi uzuze ukukhiqizwa okungenamuntu noma okungenamuntu. Lokhu akugcini nje ngokuthuthukisa ukusebenza kahle kokukhiqiza kodwa futhi kunciphisa izindleko zabasebenzi futhi kuthuthukisa ukuzinza kwekhwalithi yomkhiqizo.
III. Izici ze-CNC Milling Machine Inverter
Njengengxenye ebalulekile yohlelo lwayo lokulawula ugesi, i-inverter yomshini wokugaya i-CNC inezici ezilandelayo eziphawulekayo:
I-Torque Ephansi Enkulu kanye Nokukhipha Okuzinzile
Inganikeza i-torque eyanele ngesikhathi sokusebenza kwejubane eliphansi ukuze kuqinisekiswe ukuzinza nokucubungula ikhwalithi yethuluzi lomshini ngesikhathi sokusika ngesivinini esiphansi.
Ukulawulwa KweVector Okusebenza Kakhulu
Ingafinyelela ukulawula okunembile kwemoto, ithuthukise ukusebenza kahle kokusebenza kanye nokusebenza okunamandla kokuphendula kwemoto.
I-Fast Torque Dynamic Response kanye nokunemba okuphezulu kwesivinini esiqinile
Phakathi nenqubo yokucubungula, ingaphendula ngokushesha ekushintsheni komthwalo futhi igcine ukuzinza kwejubane lemoto, ngaleyo ndlela iqinisekise ukunemba kokucubungula.
Ukushesha Ukushesha kanye Nesivinini Sokumisa
Inganciphisa isikhathi sokuma sethuluzi lomshini futhi ithuthukise ukusebenza kahle kokukhiqiza.
Ikhono Eliqinile Lokulwa Nokuphazamiseka
Ingasebenza ngokuzinza endaweni eyinkimbinkimbi ye-electromagnetic ukuqinisekisa ukusebenza okuvamile kwethuluzi lomshini.
Njengengxenye ebalulekile yohlelo lwayo lokulawula ugesi, i-inverter yomshini wokugaya i-CNC inezici ezilandelayo eziphawulekayo:
I-Torque Ephansi Enkulu kanye Nokukhipha Okuzinzile
Inganikeza i-torque eyanele ngesikhathi sokusebenza kwejubane eliphansi ukuze kuqinisekiswe ukuzinza nokucubungula ikhwalithi yethuluzi lomshini ngesikhathi sokusika ngesivinini esiphansi.
Ukulawulwa KweVector Okusebenza Kakhulu
Ingafinyelela ukulawula okunembile kwemoto, ithuthukise ukusebenza kahle kokusebenza kanye nokusebenza okunamandla kokuphendula kwemoto.
I-Fast Torque Dynamic Response kanye nokunemba okuphezulu kwesivinini esiqinile
Phakathi nenqubo yokucubungula, ingaphendula ngokushesha ekushintsheni komthwalo futhi igcine ukuzinza kwejubane lemoto, ngaleyo ndlela iqinisekise ukunemba kokucubungula.
Ukushesha Ukushesha kanye Nesivinini Sokumisa
Inganciphisa isikhathi sokuma sethuluzi lomshini futhi ithuthukise ukusebenza kahle kokukhiqiza.
Ikhono Eliqinile Lokulwa Nokuphazamiseka
Ingasebenza ngokuzinza endaweni eyinkimbinkimbi ye-electromagnetic ukuqinisekisa ukusebenza okuvamile kwethuluzi lomshini.
IV. Izisetshenziswa Zenqubo Yomshini Wokugaya we-CNC - Fixture
I-fixture iyithuluzi elibalulekile elisetshenziselwa ukuhlanganisa izingcezu zokusebenza ngesikhathi sokucutshungulwa komshini wokugaya we-CNC. Ngomshini wokugaya we-CNC, ukukhethwa kwezinto ezilungiswayo kudinga ukunqunywa ngokusekelwe kusayizi weqoqo wezingxenye ezikhiqiziwe.
Ngokucutshungulwa kwesiqephu esisodwa, i-batch encane, kanye nesikhunta esinomthwalo omkhulu womsebenzi, ukubeka indawo kanye nokubopha ngokuvamile kungafinyelelwa ngokuqondile ethuluzini lomshini elisebenzayo ngokulungiswa, bese isikhundla sengxenye sinqunywa ngokubeka uhlelo lokuxhumanisa ukucubungula. Le ndlela ilula futhi iguquguquka ukusebenza, kodwa ukunemba kokumisa kuphansi.
Ukuze kucutshungulwe izingxenye ezinosayizi othile we-batch, ukulungiswa okunesakhiwo esilula kungakhethwa. Izinto ezinjalo zivame ukuba nezici ezifana nokuma okunembile, ukubamba okuthembekile, nokusebenza okulula, okungathuthukisa ukusebenza kahle kokucubungula nokunemba.
I-fixture iyithuluzi elibalulekile elisetshenziselwa ukuhlanganisa izingcezu zokusebenza ngesikhathi sokucutshungulwa komshini wokugaya we-CNC. Ngomshini wokugaya we-CNC, ukukhethwa kwezinto ezilungiswayo kudinga ukunqunywa ngokusekelwe kusayizi weqoqo wezingxenye ezikhiqiziwe.
Ngokucutshungulwa kwesiqephu esisodwa, i-batch encane, kanye nesikhunta esinomthwalo omkhulu womsebenzi, ukubeka indawo kanye nokubopha ngokuvamile kungafinyelelwa ngokuqondile ethuluzini lomshini elisebenzayo ngokulungiswa, bese isikhundla sengxenye sinqunywa ngokubeka uhlelo lokuxhumanisa ukucubungula. Le ndlela ilula futhi iguquguquka ukusebenza, kodwa ukunemba kokumisa kuphansi.
Ukuze kucutshungulwe izingxenye ezinosayizi othile we-batch, ukulungiswa okunesakhiwo esilula kungakhethwa. Izinto ezinjalo zivame ukuba nezici ezifana nokuma okunembile, ukubamba okuthembekile, nokusebenza okulula, okungathuthukisa ukusebenza kahle kokucubungula nokunemba.
Sengiphetha, umshini wokugaya we-CNC, ngokusebenza kwawo okuhle kakhulu njengokunemba okuphezulu, ukusebenza kahle okuphezulu, amandla okucubungula umumo oyinkimbinkimbi, ukuguquguquka, ukuguquguquka, kanye nokufezeka kalula kokukhiqiza okuzenzakalelayo, udlala indima ebalulekile ekukhiqizeni kwesimanje. Ngokuqhubeka okuqhubekayo kanye nokuqanjwa okusha kobuchwepheshe, ukusebenza komshini wokugaya we-CNC kuzoqhubeka nokuba ngcono, kunikeze ukwesekwa okuqinile ekuthuthukisweni kwemboni yokukhiqiza.