Hanyar niƙa na ƙarshen niƙa

A cikin aikin niƙa, ana iya raba niƙan ƙarewa zuwa nau'i biyu: ƙasa da niƙa da sama, gwargwadon alakar da ke tsakanin jujjuyawar mai yankan niƙa da hanyar yankan abinci. Lokacin da juyawa shugabanci na milling abun yanka ne iri daya da workpiece feed shugabanci, shi ake kira hawan milling. The juyawa shugabanci na milling abun yanka ne kishiyar zuwa workpiece feed shugabanci, wanda ake kira up-yanke milling.

Ana amfani da injin niƙa gabaɗaya wajen samarwa na ainihi. Yawan wutar da ake amfani da shi na niƙa ya fi na sama da niƙa. A ƙarƙashin yanayin yankan iri ɗaya, yawan ƙarfin da ake amfani da shi na niƙa yana da ƙasa da kashi 5% zuwa 15%, kuma ya fi dacewa da cire guntu. Gabaɗaya, ya kamata a yi amfani da hanyar niƙa gwargwadon iyawa don haɓaka ƙarewar saman (rage rashin ƙarfi) na sassan injina da tabbatar da daidaiton girman. Duk da haka, idan akwai wuya Layer, slag tarawa a kan yankan surface, da kuma surface na workpiece ne m, kamar machining ƙirƙira blanks, da up-milling hanya ya kamata a yi amfani da.

Yayin da ake yin niƙa, yankan yakan canza daga kauri zuwa sirara, sannan kuma haƙoran da ake yankawa suna yanka a saman da ba a sarrafa su ba, wanda ke da fa'ida ga yin amfani da masu yankan niƙa. A lokacin sama niƙa, a lokacin da abun yanka hakora na milling abun yanka tuntube da workpiece, ba za su iya nan da nan a yanka a cikin karfe Layer, amma zame wani ɗan gajeren nisa a saman na workpiece. Yana da sauƙi don samar da Layer mai tauri, wanda ke rage ƙarfin kayan aiki, yana shafar ƙarshen aikin aikin, kuma yana kawo rashin amfani ga yanke.

Bugu da ƙari, a lokacin hawan niƙa, tun lokacin da aka yanke hakoran hakora daga ƙasa zuwa sama (ko daga ciki zuwa waje), kuma yanke yana farawa daga saman wuyan wuyansa, hakora masu yankewa suna fuskantar babban nauyin tasiri. kuma mai yankan niƙa ya zama maras nauyi da sauri, amma masu yankan haƙoran sun yanke ciki. Babu wani abin zamewa a cikin aikin, kuma tebur ɗin aiki ba zai motsa ba yayin yankan. Up milling da ƙasa milling, saboda yankan kauri ne daban-daban a lokacin da yankan a cikin workpiece, da kuma lamba tsawon tsakanin abun yanka hakora da workpiece ne daban-daban, don haka lalacewa mataki na milling abun yanka ne daban-daban. Aiki ya nuna cewa dorewar injin niƙa ya fi 2 zuwa 3 sama da na yin niƙa a ƙasa. sau, kuma za a iya rage rashin ƙarfi na saman. Amma hawan niƙa bai dace da milling workpieces da wuya fata.