Kutembenuza kwa CNC sikungogwiritsidwa ntchito nthawi zambiri pazitsulo zolimba monga chitsulo ndi titaniyamu, komanso ndikofunikira kwambiri popanga zida zapulasitiki zolondola kwambiri. Kaya ndi kupanga zitsanzo za zida zatsopano zachipatala kapena kupanga zisindikizo zambiri zamlengalenga, kudziwa bwino njira yabwino yopangira zinthu zopanda chitsulo ndiye chinsinsi.
Kodi Kutembenuza kwa Plastic CNC ndi Chiyani?
Kutembenuza pulasitiki CNC ndi njira yochepetsera zinthu. Njira imeneyi nthawi zambiri imafuna kuzungulira mwachangu kwa zinthu zapulasitiki (makamaka mipiringidzo) pamene ikuchotsa zinthuzo kudzera mu chida chodulira chokhazikika kuti chipange gawolo. Mosiyana ndi njira yopukutira yozungulira zida, kutembenuza ndikoyenera kwambiri popanga zigawo zozungulira zokhala ndi mawonekedwe amkati ndi akunja.
Mu ndondomekoyi, kusiyana kwa kukonza pakati pa pulasitiki ndi chitsulo kumaonekera makamaka m'mbali zotsatirazi:
- Kupititsa MafutaMapulasitiki amakula mofulumira akatenthedwa.
- Kusintha kwa Workpiece: pulasitiki ndi yofewa, yosavuta kupindika ikapanikizika ndi chida.
- Chip MaonekedweMapulasitiki nthawi zambiri amapanga ma chips okhazikika, omwe si osavuta kuswa ngati ma chips achitsulo.
Chifukwa chiyani CNC Turning m'malo mwa Injection Molding?
Vuto lofala kwambiri m'makampani opanga ndi lakuti: bwanji kugwiritsa ntchito makina a CNC pamene kupanga jakisoni kulipo?
Ngakhale kupanga jakisoni kuli ndi ubwino popanga zinthu zochepa (zoposa 10,000), kutembenuza kwa CNC kuli ndi ubwino wapadera pazochitika zinazake:
- Palibe Mtengo wa Nkhungu: Simukusowa nkhungu yokwera mtengo yomwe ndi yoyenera kwambiri popanga zitsanzo.
- Kupanga Kusinthasintha: Mutha kusintha kapangidwe kake nthawi yomweyo mwa kusintha code.
- Kulekerera Kokhwima: Zapamwamba Lathes CNC imatha kusunga kulekerera kwa +/- 0.001 mainchesi, zomwe zimakhala zovuta kukwaniritsa popangira jakisoni pomwe kuchepa kumapangitsa kuti zikhale zovuta kuwongolera miyeso.
- Umphumphu Wakuthupi: Zigawo zopangidwa ndi makina zimadulidwa kuchokera ku mipiringidzo yolimba ndipo kulimba kwa kapangidwe kake nthawi zambiri kumakhala bwino kuposa zigawo zopangidwa ndi jakisoni zomwe zingakhale ndi zizindikiro zoyenda kapena zopanda kanthu.
Kuyerekeza kwa Mapulasitiki Odziwika Oyenera Kutembenuzidwa ndi CNC
Kusankha zinthu zoyenera ndi gawo loyamba pakupanga CNC bwino. Mapulasitiki osiyanasiyana amafuna liwiro losiyana la kudula ndi njira zogwiritsira ntchito. Izi ndi kufananiza kokonzedwa bwino kwa mapulasitiki okonzedwa omwe amagwiritsidwa ntchito kwambiri.
| Kuyerekeza Table ya CNC Turning Pulasitiki Material | |||
|---|---|---|---|
| Zofunika | Dzina lazamalonda | Kuthekera | Ntchito Yabwino Kwambiri |
| Acetal | Delrin | chabwino | Magiya, ma bushing, zotetezera magetsi. |
| nayiloni | Nayiloni 6/6 | Good | Mabearing, ma wear pads, mawilo. |
| PTFE | Teflon | Wongolerani | Zisindikizo, zida zosagwira mankhwala. |
| PeEK | PeEK | Good | Zopangira mpweya wotentha kwambiri komanso zoikamo mankhwala. |
| akiliriki | Plexiglass | Wongolerani | Zigawo zowala, manifolds owonekera. |
| Polycarbonate | Lexan | Good | Zophimba, magalasi, ndi zophimba zolimba. |
Acetal (Delrin)
Acetaldehyde imaonedwa kuti ndi pulasitiki yosavuta kwambiri kuikonza ndipo ndi chisankho chabwino kwambiri popanga zida zolondola kwambiri. Chifukwa cha kukula kwake kokhazikika, kusasinthasintha pang'ono, komanso kusweka mosavuta kwa chip, imatha kupewa vuto la chip looneka ngati chisa lomwe limapezeka kwambiri pakutembenuza kwa CNC.
PEEK (Polyetheretherketone)
PEEK ndi thermoplastic yopangidwa mwaukadaulo yogwira ntchito bwino kwambiri. Ngakhale kuti ndi yokwera mtengo, imakhala ndi mankhwala abwino kwambiri komanso yolimba mtima. Pamene CNC ikusintha kukhala PEEK, chida chakuthwa chimafunika kuti kutentha kusanjikane, apo ayi izi zingayambitse kusweka kwa zinthuzo.
PTFE (Teflon)
PTFE ndi yoyenera kwambiri popanga zisindikizo chifukwa cha kapangidwe kake kofewa komanso koterera, koma n'kovuta kusunga kulekerera chifukwa cha kukanikiza kwake kosavuta. Wopanga makina ayenera kugwiritsa ntchito mphamvu yopepuka yotsekera kuti apewe kusintha kwa gawolo panthawi yozungulira.
Kodi Mungakonze Bwanji Kutembenuza kwa Pulasitiki CNC?
Muyenera kusintha magawo a ntchito yokonza kuti mupeze gawo labwino kwambiri: pulasitiki singathe kukonzedwa ngati aluminiyamu kapena chitsulo.
Kusankha Chida
Positive Rake AnglesGwiritsani ntchito mawonekedwe a ngodya yayikulu yokongola kuti mudule pulasitiki m'malo moikanda, zomwe zimachepetsa kutentha.
Zitoliro ZopukutidwaPazinthu monga acrylic ndi polycarbonate, chida chopukutidwa Mizere yothandizira kuchotsa zipsera mwachangu ndikuwongolera mawonekedwe a pamwamba.
Zida Zazida: Zoyikapo za Carbide ndizokhazikika, koma pa pulasitiki yolimba (monga nayiloni yagalasi), tikulimbikitsidwa kugwiritsa ntchito diamondi ya polycrystalline (zinthu zopangira nthawi zonse zimakhala zoyenera). PCD) zida zowonjezerera moyo wa chida.
Kuthamanga ndi Zakudya
Chimodzi mwa zolakwika zazikulu mu CNC turning plastics ndichakuti liwiro la spindle ndi lachangu kwambiri, koma kuchuluka kwa chakudya sikokwanira.
Mlingo Wakudya KwambiriNgati chakudyacho chikuchedwa kwambiri, chidacho chimakhala pamalo pomwe chimayambitsa kukangana ndi kusungunula pulasitiki.
Kuthamanga MwachanguNgakhale kuti mapulasitiki amatha kukonzedwa mwachangu kwambiri, mphamvu ya centrifugal yomwe imapangidwa ndi liwiro lozungulira kwambiri (RPM) zingasinthe mawonekedwe a ziwalo zazitali.
Njira Yozizira
Chigumula ChoziziraIzi nthawi zambiri zimalimbikitsidwa kuti zitsuke tchipisi ndikusunga zina zozizira.
Kuphulika kwa Air: Pa mapulasitiki ena monga nayiloni, choziziritsira chamadzi chikhoza kuyamwa, motero kusintha pang'ono kukula kwake. Mpweya wozizira wopanikizika ndiye chisankho choyamba chochotsera tchipisi pankhaniyi.
Mavuto Odziwika Ndi Mayankho
Mungakumane ndi zolakwika zinazake pakusintha kwa CNC kwa zinthu zosakhala zachitsulo. Izi ndi mafunso omwe amafunsidwa kawirikawiri omwe amafunsidwa kawirikawiri ngati funso ndi yankho.
Izi nthawi zambiri zimachitika chifukwa cha kukangana. Chida chanu chingakhale chosalala, kapena nthawi ya Dwell ingakhale yayitali kwambiri. Yankho lake ndikuwonjezera kuchuluka kwa chakudya (chip load) ndikuwonetsetsa kuti zida zakuthwa zopukutira zopangidwa ndi pulasitiki zimagwiritsidwa ntchito kuchepetsa kutentha komwe kumawonjezeka.
Zidutswa zazitali za pulasitiki n'zosavuta kuzimangirira pa chida ndi ziwalo zake, kukanda pamwamba pake komanso kuwononga chidacho. Kuti muthetse vutoli, mutha kugwiritsa ntchito njira ya 'Peck Turning' kuti muswe zidutswa, kapena sankhani chinthu chokhala ndi magwiridwe antchito abwino achilengedwe monga Delrin.
Kugwedezeka kapena kugwedezeka ndiye chifukwa chachikulu. Muyenera kuonetsetsa kuti chogwirira ntchitocho chatsekedwa mwamphamvu (osati chokanikiza), ndipo kuchuluka kwa chida chopachikiracho kuyenera kuchepetsedwa. Pa mapulasitiki owonekera (monga acrylic), kugwiritsa ntchito zida zomaliza (kuchotsa zinthu zochepa kwambiri, mwachitsanzo, 0.05 mm) kungabwezeretse kwambiri kuwonekera kwawo.
Mapulasitiki ali ndi mphamvu yowonjezereka ya kutentha (yoposa nthawi 10 kuposa chitsulo), ndipo zipangizo zina (monga nayiloni) n'zosavuta kuyamwa chinyezi. Kukonza kutentha kumabweretsa kukula ndi kupindika pambuyo pozizira. Yankho lake ndi: kuyeza pamalo otentha nthawi zonse; pazigawo zolondola kwambiri, kumasula kupsinjika kumachitika kwa maola 24 pambuyo pokonza molakwika, kenako kumaliza kumachitika.
Kugwiritsa Ntchito Mapulasitiki Opangidwa ndi Makampani
Kutembenuza CNC ndikofunikira kwambiri m'magawo onse apamwamba:
- Medical: Zipangizo zoyikira za PEEK ndi zogwirira zida zochitira opaleshoni zimafuna kugwirizana kwa thupi komanso kulondola kwambiri.
- Kupatula: Zisindikizo za PTFE ndi ma paipi a nayiloni zimagwiritsidwa ntchito kwambiri chifukwa cha mphamvu zawo zopepuka komanso zoletsa moto.
- Kuphatikiza ChakudyaMa rollers ndi ma guide rails a UHMW-PE (ultra-high molecular weight polyethylene) amakonzedwa powatembenuza chifukwa zinthuzo sizowopsa komanso zimadzipaka zokha.
- zamagetsi: Chotchingira cha Delrin chimagwiritsidwa ntchito posintha zida zomwe zimafuna conductivity ya zero.
Mfundo 5 za Kupanga Mapangidwe (DFM)
Pofuna kuchepetsa ndalama ndikukweza ubwino mukamayitanitsa ntchito zotembenuza CNC, chonde tsatirani malamulo otsatirawa opangira:
- Pewani Makona Akuthwa AmkatiMonga kugaya, chidachi chimakhala chozungulira. Chigawo chaching'ono chimasungidwa pakona yamkati kuti muchepetse kupsinjika.
- Kuletsa Mabowo Ozama: Chifukwa cha kuvutika kuchotsa tchipisi, n'kovuta kuboola mabowo akuya pa pulasitiki. Yesetsani kusunga kuya kwa dzenjelo kuchepera katatu kuposa kukula kwake.
- Kukhuthala kwa KhomaMakoma owonda (osakwana 0.5mm) amatha kugwedezeka akamazungulira kapena kupotoza atachotsedwa pa chuck.
- Fotokozani Kulekerera Mwanzeru: Musafune kulekerera kwa +/-0.0005'' pokhapokha ngati pakufunika kutero. Pulasitiki idzasuntha kutentha kukasintha; kulekerera kolimba kwambiri kudzawonjezera mtengo kwambiri.
- Ulusi WokhazikikaYesani kugwiritsa ntchito ulusi wokhuthala wamba (UNC/ISO), chifukwa ulusi wopyapyala ndi wosavuta kuulowetsa mu pulasitiki yofewa.
Kutsiliza
Kudziwa bwino kutembenuza mapulasitiki pogwiritsa ntchito CNC kumafuna kusintha momwe amaganizira pokonza zitsulo. Kumafuna mipeni yakuthwa, kuchuluka kwa chakudya kuti asasungunuke, komanso kumvetsetsa bwino sayansi ya zinthu. Mwa kusankha mapulasitiki oyenera - kaya ndi a Delrin kapena PEEK omwe amagwiritsidwa ntchito kwambiri - ndikutsatira malangizo owongolera omwe ali pamwambapa, mutha kupanga zinthu zokhazikika komanso zolondola kwambiri zomwe sizili zachitsulo.
Kuti mudziwe zambiri zokhudza katundu wa zinthu, mutha kupita ku MatWeb, yomwe ndi database yonse ya tebulo la deta.
Ngati mukufuna kukulitsa chidziwitso chanu cha kupanga zinthu, onani buku lathu lotsogolera pa Kugaya ndi Kutembenuza kwa CNC kapena kufufuza Kukonza Zinthu Zachitsulo za CNC Kutembenuza.
