Ramin da kuma Chamfering matakai ne guda biyu don sarrafa birki.
Ana kuma kiran ramin ...
Gefen kayan gogayya na faifan birki, da kuma nau'ikan faifan birki daban-daban suna da lambar rago daban-daban. Misali, faifan birki na babur yawanci yana da rago 2-3, yayin da faifan birki na motar fasinja yawanci yana da rago 1.
Chamfering tsari ne na yanke kusurwoyi a gefen toshewar gogayya. Kamar ramukan slotting, chamfering kuma yana da buƙatu daban-daban na kusurwoyi da kauri.
Amma me yasa waɗannan matakai guda biyu suka zama dole? A zahiri yana da fa'idodi masu zuwa:
1. Rage hayaniya ta hanyar canza mitar matakin mitar juyawa.
2. Slotting kuma yana samar da hanyar fitar da iskar gas da ƙura a cikin zafi mai yawa, wanda hakan ke rage raguwar ingancin birki yadda ya kamata.
3. Domin hana da kuma rage tsagewar.
4. Sanya birki ya fi kyau idan ya yi kyau.