Official Answer
Answer
A cikin cikakkiyar ƙirar ƙa'idar, tsagi suna da $90^\circ$ kusurwoyi masu kaifi. A zahiri, kayan aikin suna da radius $ R$, kuma ɓangaren mating yana da chamfer $ C $. Waɗannan fasalulluka suna rage tasiri mai tasiri tsakanin zobe da bangon tsagi. Dole ne a rage ƙarfin matsawa ta amfani da factor $K$. Idan chamfer akan ɓangaren da aka riƙe ya yi girma da yawa, yana haifar da sakamako na 'kara' wanda ke ƙoƙarin faɗaɗa zobe (nau'in ɗaki) ko kwangilar shi (nau'in shaft) daga cikin tsagi. A matsayinka na babban yatsan hannu, matsakaicin hazaka ko radius da aka yarda da shi shine $0.5 \ sau d$ (zurfin tsagi). Idan chamfer ya wuce wannan, dole ne a yi amfani da mai wanki don samar da fuska mai murabba'i don zoben.
