A cikin tsarin yankan CNC, akwai dalilai da yawa don kurakurai.Kuskuren da aka yi da kayan aiki na radial runout yana daya daga cikin muhimman abubuwan, wanda kai tsaye ya shafi siffar da farfajiyar da kayan aikin injin zai iya cimma a karkashin yanayi mai kyau.A cikin yankan, yana rinjayar daidaito, rashin daidaituwa, rashin daidaituwa na lalacewa na kayan aiki da halaye na kayan aikin hakora da yawa.Mafi girma da radial runout na kayan aiki, da mafi m yanayin inji na kayan aiki, da kuma mafi rinjayar samfurin.
Dalilan Radial Runout
Kurakurai masana'antu da clamping na kayan aiki da abubuwan spindle suna haifar da ɗigo da eccentricity tsakanin axis na kayan aiki da madaidaicin juzu'in juzu'i na spindle, da takamaiman fasahar sarrafawa da kayan aiki, wanda zai iya haifar da radial runout na CNC milling inji kayan aiki a lokacin. sarrafawa.
1. Tasirin radial runout na spindle
Babban dalilai na kuskuren radial runout na spindle shine coaxiality, ɗaukarsa, coaxiality tsakanin bearings, karkatar da igiya, da dai sauransu.Wadannan abubuwan sun samo asali ne a cikin masana'antu da kuma hada kayan aikin injin, kuma yana da wuya ma'aikacin na'urar ya guje wa tasirin su.
2. Bambance-bambancen rashin daidaituwa tsakanin cibiyar kayan aiki da cibiyar juyawa ta spindle
Lokacin da aka shigar da kayan aiki a kan igiya, idan tsakiyar kayan aiki bai dace da wannan ba, kayan aiki ba makawa zai haifar da radial runout.Abubuwan da ke da tasiri na musamman sune: dacewa da kayan aiki da chuck, hanyar loda kayan aiki da ingancin kayan aikin kanta.
3. Tasirin takamaiman fasahar sarrafawa
Abin da ya haifar da radial runout shine akarfi.Ƙarfin yankan radial shine samfuran radial na jimlar yankan ƙarfi.Zai sa aikin aikin ya lanƙwasa da lalacewa kuma ya haifar da rawar jiki a cikin tsari.An fi haifar da shi ta hanyar abubuwa kamar yankan adadin, kayan aiki da kayan aikin yanki, hanyar lubrication, kusurwar geometric kayan aiki da hanyar sarrafawa.
Hanyoyin Rage Radial Runout
Kamar yadda aka ambata a batu na uku.Rage ƙarfin yankan radial muhimmiyar ka'ida ce don rage shi.Ana iya amfani da hanyoyi masu zuwa don ragewa
1. Yi amfani da kayan aikin yanke kaifi
Zaɓi babban kusurwar rake kayan aiki don sanya kayan aiki ya fi ƙarfin don rage yanke ƙarfi da girgiza.Zaɓi babban kusurwar sharewa na kayan aiki don rage juzu'i tsakanin babban farfajiyar kayan aiki da Layer dawo da na roba na canjin kayan aikin, don haka rage girgiza.Duk da haka, ba za a iya zaɓar kusurwar rake da kusurwar izinin kayan aiki da girma ba, in ba haka ba ƙarfin da yanayin zafi na kayan aiki bai isa ba.Sabili da haka, wajibi ne a zaɓi nau'ikan rake daban-daban da kusurwoyin sharewa na kayan aiki bisa ga takamaiman yanayin.Ƙaƙƙarfan mashin ɗin na iya zama ƙarami, amma a cikin aikin gamawa, la'akari da cewa rage radial runout na kayan aiki, ya kamata ya fi girma don sa kayan aiki ya fi girma.
2. Yi amfani da kayan aikin yanke masu ƙarfi
Akwai yafi hanyoyi biyu don ƙara ƙarfin kayan aikin yankan.Ɗaya shine ƙara diamita na mariƙin.A karkashin irin wannan ƙarfin yankan radial, diamita na mai riƙe kayan aiki yana ƙaruwa da 20%, kuma za a iya rage radial runout na kayan aiki da 50%.Na biyu shine don rage tsayin tsayin daka na kayan aikin yanke.Mafi girman tsayin tsayin kayan aiki, mafi girman nakasar kayan aiki yayin aiki.Lokacin da aiki ke cikin canji akai-akai, zai ci gaba da canzawa, yana haifar da samar da kayan aiki mai tsauri.Hakazalika, an rage tsawon tsawo na kayan aiki da 20%, kuma za a rage shi da 50%.
3. Fuskar rake na kayan aiki ya kamata ya zama santsi
A lokacin sarrafawa, fuskar rake mai santsi na iya rage raguwa na ƙananan yanke a kan kayan aiki, kuma yana iya rage ƙarfin yankewa akan kayan aiki, don haka rage radial runout na kayan aiki.
4. Ramin taper da chuck tsaftacewa
Ramin maɗaurin gindi da ƙugiya suna da tsabta, kuma bai kamata a sami ƙura da tarkace da aka samar a cikin sarrafa ba.Lokacin zabar kayan aikin injin, gwada amfani da kayan aiki tare da ɗan gajeren tsayin tsayi don ɗaukar nauyi, kuma ƙarfin ya kamata ya zama mai ma'ana kuma har ma, ba ma babba ko ƙanƙanta ba.
5. Zaɓi haɗin kai mai ma'ana na yanke
Idan haɗin gwiwar yankan ya yi ƙanƙanta, abin da ke faruwa na zamewar mashin ɗin zai faru, wanda zai haifar da ci gaba da canjin radial runout na kayan aiki a lokacin machining, wanda zai haifar da fuskar fuska.Idan haɗin gwiwar yankan ya yi girma, ƙarfin kayan aiki ya karu.Zai haifar da babban lahani na kayan aiki da sakamakon kamar yadda yake sama.
6. Yi amfani da niƙa wajen gamawa
Kamar yadda matsayi na rata tsakanin gubar dunƙule da goro canje-canje a lokacin saukar milling, shi zai haifar da m abinci na worktable, sakamakon girgiza da rawar jiki, shafi rayuwar na'ura da kayan aiki da kuma surface roughness na workpiece.Lokacin da ake yin niƙa, yankan kauri da nauyin kayan aiki kuma suna canzawa daga ƙarami zuwa babba, ta yadda kayan aikin ya fi karko yayin sarrafawa.Lura cewa ana amfani da wannan kawai don ƙarewa, kuma har yanzu ana amfani da niƙan ƙasa lokacin yin roughing.Wannan shi ne saboda yawan amfanin ƙasa niƙa yana da girma kuma ana iya tabbatar da rayuwar sabis na kayan aiki.
7. Haƙiƙa na amfani da yankan ruwa
Amfani da ruwa mai ma'ana, galibi maganin sanyaya ruwa, yana da ɗan tasiri akan yanke ƙarfi.Man mai yankan wanda babban aikinsa shine lubrication na iya rage ƙarfin yankewa sosai.Saboda tasirin sa mai mai, yana iya rage juzu'a tsakanin fuskar rake kayan aiki da guntu da tsakanin fuskar fuska da canjin yanayin aikin aikin, don haka rage radial runout.Aiki ya tabbatar da cewa idan dai an tabbatar da daidaito na masana'antu da taro na kowane bangare na na'ura, kuma an zaɓi tsari mai ma'ana da kayan aiki, tasirin radial runout na kayan aiki akan juriya na machining na workpiece na iya zama. rage girman.
Lokacin aikawa: Fabrairu-17-2022
