I. Menene Niƙa Mai Girma?
Milling High-Feed (wanda aka gajarta da HFM) dabarun niƙa ne na ci gaba a cikin injinan CNC na zamani. Babban fasalinsa shine "ƙananan zurfin yankewa da ƙimar abinci mai girma". Idan aka kwatanta da hanyoyin niƙa na al'ada, wannan fasaha tana ɗaukar ƙananan zurfin yanke axial (yawanci daga 0.1 zuwa 2.0 mm) da ƙimar ciyarwar haƙori mai tsayi sosai (har zuwa sau 5-10 na niƙa na gargajiya), haɗe tare da babban saurin igiya, don cimma ƙimar abinci mai ban mamaki.
Halin juyin juya hali na wannan ra'ayi na sarrafawa ya ta'allaka ne a cikin cikakkiyar canjinsa na alkiblar yanke ƙarfi, yana mai da ƙarfin radial mai cutarwa da aka haifar a cikin injin niƙa na gargajiya zuwa ƙarfin axial mai fa'ida, ta haka zai iya yin aiki mai sauri da ingantaccen aiki. Shugaban niƙa mai saurin ciyarwa daidai kayan aiki ne na musamman da aka ƙera don aiwatar da wannan dabarun kuma ya zama kayan aiki mai mahimmanci a cikin masana'antar ƙera na zamani, sararin samaniya, da masana'antar kera motoci, da sauransu.
II. Ka'idar aiki naBabban Ciyarwar Milling Cutter
Sirrin da ke bayan babban abin yankan niƙa yana cikin ƙirar ƙaramin babban kusurwar sa na musamman. Sabanin masu yankan niƙa na gargajiya tare da babban kusurwar 45° ko 90°, mai saurin ciyar da milling shugaban yawanci yana ɗaukar ƙaramin babban kusurwa na 10° zuwa 30°. Wannan canji a cikin lissafi yana canza ainihin alkiblar ikon yankewa.
Mechanical canji tsari: Lokacin da ruwa zo a cikin lamba tare da workpiece, da kananan babban rake kwana zane sa da yankan karfi zuwa yafi nuna a cikin axial shugabanci (tare da axis na kayan aiki jiki) maimakon radial shugabanci (perpendicular ga axis) kamar yadda a gargajiya milling. Wannan sauyi yana haifar da sakamako masu mahimmanci guda uku:
1. Tasirin haɓakawar girgiza: Babban ƙarfin axial yana jan diski mai yankewa "zuwa" babban shaft, yana haifar da kayan aikin yankewa - babban tsarin shaft ɗin ya kasance cikin yanayin tashin hankali. Wannan yana danne rawar jiki da ƙarfi yadda ya kamata, yana ba da damar yankan santsi ko da a ƙarƙashin manyan yanayi na overhang.
2. Tasirin kariyar na'ura: Ƙarfin axial yana ɗauka ta hanyar ƙaddamar da babban mashin na inji. Ƙarfin ƙarfinsa ya fi girma fiye da na radial bearings, don haka rage lalacewa ga babban shinge da kuma kara tsawon rayuwar kayan aiki.
3. Tasirin haɓaka ciyarwa: Yana kawar da gazawar girgizawa, yana ba da damar kayan aiki don ɗaukar ƙimar abinci mai girman gaske a kowane haƙori. Gudun ciyarwa na iya kaiwa sau 3 zuwa 5 na niƙa na al'ada, tare da matsakaicin gudun ya kai sama da 20,000 mm/min.
Wannan m inji zane sa da m feed shugaban niƙa don kula da wani babban karfe kau kudi yayin da muhimmanci rage yankan vibration, aza harsashi ga high quality- surface sarrafa.
III. Babban Fa'idodi da Halaye naBabban Ciyarwar Milling Cutter
1. High-inganci aiki: Mafi sananne amfani da high feed milling abun yanka ne ta fice karfe kau kudi (MRR). Kodayake zurfin yankan axial ba shi da ɗanɗano kaɗan, babban saurin ciyarwa gabaɗaya ya rama wannan rashi. Misali, lokacin da injin niƙa gama gari yana amfani da shugaban niƙa mai saurin ciyarwa don sarrafa ƙarfe na kayan aiki, saurin ciyarwar zai iya kaiwa 4,500 - 6,000 mm/min, kuma adadin cire ƙarfe ya ninka sau 2 - 3 fiye da na masu yankan niƙa na gargajiya.
2. Excellent surface quality: Saboda da musamman m sabon tsari, m feed milling iya cimma kyau kwarai surface gama, yawanci kai Ra0.8μm ko ma mafi girma. A yawancin lokuta, ana iya amfani da filayen da aka sarrafa ta hanyar amfani da kawuna na niƙa mai saurin ciyarwa kai tsaye, wanda zai kawar da tsarin kammalawa da rage yawan aikin samarwa.
3. Babban tasirin ceton makamashi: Bincike ya nuna cewa yawan kuzarin da ake amfani da shi na niƙa da sauri ya kai kashi 30% zuwa 40% ƙasa da na niƙa na gargajiya. Ana amfani da ƙarfin yankan da kyau don cire kayan abu maimakon cinyewa a cikin girgiza kayan aiki da na'ura, samun nasarar sarrafa kore na gaskiya.
4. Zai iya ƙara tsawon rayuwar sabis na tsarin kayan aiki: Tsarin yankan santsi yana rage tasiri da lalacewa a kan kayan aiki, kuma rayuwar kayan aiki za a iya ƙara fiye da 50%. Ƙarƙashin ƙarfin radial kuma yana rage nauyi akan sandar kayan aikin injin, yana mai da shi dacewa musamman ga tsofaffin injuna waɗanda ba su da isasshen ƙarfi ko don yanayin sarrafa manyan-wuta.
5. Abũbuwan amfãni daga sarrafa bakin ciki-banga sassa: The musamman kananan radial ƙarfi sa high feed milling abun yanka ya zama manufa zabi ga sarrafa bakin ciki-banga da sauƙi nakasu sassa (kamar aerospace tsarin gyara, mota mold sassa). An rage nakasar kayan aikin da kashi 60% -70% idan aka kwatanta da niƙa na gargajiya.
Bayanin sigogin sarrafawa na yau da kullun na babban abin yankan niƙa:
Lokacin amfani da babban abincin niƙa abun yanka tare da diamita na 50mm kuma sanye take da 5 ruwan wukake zuwa na'ura P20 kayan aiki karfe (HRC30):
Matsakaicin gudun: 1,200 rpm
Yawan ciyarwa: 4,200 mm/min
Zurfin yankan axial: 1.2mm
Zurfin yankan Radial: 25mm (ciyarwar gefe)
Yawan cire ƙarfe: Har zuwa 126 cm³/min
IV. Takaitawa
Babban abin yankan niƙa ba kayan aiki ba ne kawai; yana wakiltar babban ra'ayi na sarrafawa. Ta hanyar ƙwararrun ƙirar injiniya, yana canza rashin amfani na yanke ƙarfi zuwa fa'idodi, samun cikakkiyar haɗuwa da babban saurin gudu, inganci mai inganci, da ingantaccen sarrafawa. Don masana'antun sarrafa injiniyoyi da ke fuskantar matsin lamba don haɓaka aiki da kuma biyan buƙatun sarrafawa masu inganci, aikace-aikacen fasaha na injin milling mai saurin ciyarwa ba shakka zaɓin dabaru ne don haɓaka gasa.
Tare da ci gaba da haɓaka fasahar CNC, kayan kayan aiki da software na CAM, fasahar milling mai saurin ciyarwa za ta ci gaba da haɓakawa, tana ba da tallafin fasaha mai ƙarfi don sauye-sauye mai hankali da haɓaka masana'antar masana'antu. Nan da nan haɗa shugaban mai yankan abinci mai sauri cikin tsarin samarwa kuma ku sami tasirin canji na ingantaccen aiki!
Lokacin aikawa: Satumba-03-2025
