CNC Machining luso ali mkulu digiri yolondola ndi mwatsatanetsatane ndipo akhoza kupanga mbali zabwino ndi tolerances ang'onoang'ono monga 0.025 mm. Njira iyi yopangira makina ndi ya gulu la subtractive kupanga, zomwe zikutanthauza kuti panthawi yokonza, magawo ofunikira amapangidwa pochotsa zinthu. Choncho, ting'onoting'onoting'ono tating'onoting'ono timakhalabe pamwamba pa mbali zomalizidwa, zomwe zimapangitsa kuti pakhale roughness.
Kodi kukhaula pamwamba ndi chiyani?
Pamwamba roughness wa mbali anapezedwa ndiCNC makinandi chizindikiro cha fineness pafupifupi wa kapangidwe pamwamba. Kuti tidziwe zambiri za khalidweli, timagwiritsa ntchito magawo osiyanasiyana kuti tifotokoze, pakati pawo Ra (masamu amatanthawuza roughness) ndi omwe amagwiritsidwa ntchito kwambiri. Amawerengedwa potengera kusiyana kwakung'ono kwa kutalika kwa pamwamba ndi kusinthasintha kochepa, komwe nthawi zambiri kumayesedwa ndi maikulosikopu mu ma microns. Ndikoyenera kudziwa kuti kuuma kwapamwamba ndi kutsiriza kwapamwamba ndi mfundo ziwiri zosiyana: ngakhale luso lamakono la makina opangidwa ndi makina apamwamba kwambiri limatha kusintha kusalala kwa pamwamba pa gawolo, kuuma kwapamwamba kumatanthawuza makamaka mawonekedwe a mawonekedwe a gawolo pambuyo pokonza.
Kodi timakwanitsa bwanji kukhwima kosiyanasiyana?
Pamwamba pa roughness wa mbali pambuyo Machining si mwachisawawa kwaiye koma mosamalitsa ankalamulira kufika enieni muyezo mtengo. Mtengo wokhazikikawu umayikidwatu, koma si chinthu chomwe chingagawidwe mwachisawawa. M'malo mwake, ndikofunikira kutsatira miyezo ya Ra value yomwe imadziwika kwambiri mumakampani opanga. Mwachitsanzo, malinga ndi ISO 4287, muCNC Machining ndondomeko, mtundu wa mtengo wa Ra ukhoza kufotokozedwa momveka bwino, kuyambira pa ma microns 25 mpaka 0.025 ma microns abwino kwambiri kuti agwirizane ndi zofunikira zosiyanasiyana zogwiritsira ntchito.
Timapereka magiredi anayi owoneka bwino, omwenso ndi omwe amafunikiranso pakugwiritsa ntchito makina a CNC:
3.2 μm Ra
Ra1.6 μm Ra
Ra0.8 μm Ra
Ra0.4 μm Ra
Zosiyanasiyana Machining njira ndi zofunika zosiyanasiyana pamwamba roughness mbali. Pokhapokha ngati zofunikira zinazake za kagwiritsidwe ntchito kafotokozedwe m'pamene zitsimikizo zaukali zidzachulukitsidwa chifukwa kupeza ma Ra otsika kumafuna makina ochulukirachulukira komanso njira zowongolera zowongolera, zomwe nthawi zambiri zimachulukitsa mtengo ndi nthawi. Choncho, pamene roughness yeniyeni ikufunika, pambuyo-processing ntchito kawirikawiri sanasankhidwe poyamba chifukwa post-processing njira ndi zovuta kulamulira molondola ndipo zingakhale ndi zotsatira zoipa pa dimensional toleranceal gawo.
M'njira zina zamakina, kuuma kwa gawo la gawo kumakhudza kwambiri ntchito yake, magwiridwe ake, komanso kulimba kwake. Zimakhudzana mwachindunji ndi kugundana, kuchuluka kwa phokoso, kuvala, kutulutsa kutentha, ndi magwiridwe antchito a gawolo. Komabe, kufunikira kwazinthu izi kudzasiyana malinga ndi momwe ntchito ikugwiritsidwira ntchito. Choncho, nthawi zina, kuuma kwapamwamba sikungakhale chinthu chofunika kwambiri, koma nthawi zina, monga kupanikizika kwakukulu, kupanikizika kwakukulu, malo ogwedezeka kwambiri, komanso kumene kumayenera kukhala koyenera, kuyenda kosalala, kusinthasintha mofulumira, kapena kuyika kwachipatala kumafunika. Mu zigawo, pamwamba roughness n'kofunika. Mwachidule, mikhalidwe yosiyanasiyana yogwiritsira ntchito imakhala ndi zofunikira zosiyanasiyana pazovuta zapamadzi.
Kenako, tizama m'magiredi ovuta kwambiri ndikukupatsani chidziwitso chonse chomwe muyenera kudziwa posankha mtengo wa Ra woyenera pa pulogalamu yanu.
3.2 μm
Izi ndizomwe zimagwiritsidwa ntchito kwambiri pokonzekera malo omwe ali oyenera zigawo zambiri ndipo amapereka kusalala kokwanira koma ndi zizindikiro zoonekeratu. Popanda malangizo apadera, mulingo wa roughness uwu nthawi zambiri umatengedwa ndi kusakhazikika.
3.2 μm chizindikiro cha makina a Ra
Pazigawo zomwe zimafunikira kupirira kupsinjika, kulemedwa, ndi kugwedezeka, mtengo wokwanira wokwera pamwamba ndi 3.2 microns Ra. Pansi pa katundu wopepuka komanso kuthamanga kwapang'onopang'ono, mtengo wovutawu ungagwiritsidwenso ntchito kufananiza malo oyenda. Kuti mukwaniritse nkhanza zotere, kudula kothamanga kwambiri, chakudya chabwino, ndi mphamvu yochepa yodulira pamafunika pakukonza.
1.6 μm Ra
Nthawi zambiri, njira iyi ikasankhidwa, zilembo zodulidwa pagawolo zimakhala zopepuka komanso zosawoneka. Mtengo wa Ra uwu ndi woyenerera pazigawo zolimba zolimba, magawo omwe ali ndi nkhawa, ndi malo omwe amayenda pang'onopang'ono komanso odzaza mopepuka. Komabe, sikoyenera magawo omwe amazungulira mwachangu kapena kumva kugwedezeka kwakukulu. Kuuma kwapamwamba kumeneku kumatheka pogwiritsa ntchito kuthamanga kwambiri, kudyetsa bwino, ndi mabala opepuka pansi pamikhalidwe yoyendetsedwa bwino.
Pankhani ya mtengo, pazitsulo za aluminiyamu (monga 3.1645), kusankha njira iyi kumawonjezera ndalama zopangira pafupifupi 2.5%. Ndipo pamene zovuta za gawolo zikuwonjezeka, mtengo udzawonjezeka moyenerera.
0.8 μm Ra
Kukwaniritsa kutha kwapamwambaku kumafuna kuwongolera kolimba kwambiri panthawi yopanga ndipo, motero, ndikokwera mtengo. Mapeto awa nthawi zambiri amagwiritsidwa ntchito pazigawo zomwe zimakhala ndi kupsinjika ndipo nthawi zina zimagwiritsidwa ntchito pama bere pomwe kusuntha ndi zolemetsa zimakhala zanthawi zina komanso zopepuka.
Pankhani ya mtengo, kusankha mulingo wapamwambawu kumawonjezera ndalama zopangira pafupifupi 5% pazitsulo zofananira za aluminiyamu monga 3.1645, ndipo mtengowu ukukulirakulira pamene gawolo limakhala lovuta kwambiri.
0.4 μm Ra
Kutsirizitsa kwapamwamba kumeneku (kapena "kosalala") kumasonyeza kutsirizitsa kwapamwamba kwambiri ndipo ndi koyenera kwa mbali zomwe zimakhala zovuta kwambiri kapena kupsinjika maganizo, komanso zigawo zozungulira mofulumira monga ma bearings ndi shafts. Chifukwa chakuti njira yopangira mapeto a pamwambayi ndi yovuta kwambiri, imasankhidwa kokha pamene kusalala kuli chinthu chofunika kwambiri.
Pankhani ya mtengo, pazitsulo za aluminiyamu (monga 3.1645), kusankha kuuma kwapamwamba kumeneku kumawonjezera ndalama zopangira pafupifupi 11-15%. Ndipo pamene zovuta za gawolo zikuwonjezeka, mtengo wofunikira udzakwera kwambiri.
Nthawi yotumiza: Dec-10-2024