I-angle ye-R yetyhubhu yesikwere ichazwe njani kumgangatho wesizwe?

I-engile ye-R kwityhubhu yesikwere yi-arc eguqukayo kwindawo edibana kuyo iiplani ezimbini, ngokuqhelekileyo yi-half diameter yomgca osembindini we-arc egobileyo ye-R. Ixabiso le-arc egobileyo ye-R ngokuqhelekileyo liphindwe kayi-1.5 ~ 2.0 ubukhulu bombhobho. Ubungakanani be-engile ye-R bumiselwa ngokobukhulu bodonga lwetyhubhu yesikwere. I-engile ye-R yahlulwe nge-engile ye-R yangaphakathi kunye ne-engile ye-R yangaphandle. I-R yangaphakathi ngokuqhelekileyo iphindwe kayi-1.5 ~ 2 ubukhulu bodonga. Iityhubhu zentsimbi zesikwere ezinee-engile ezahlukeneyo ze-R nazo zinokwenziwa ngokweemfuno zomsebenzisi.
Umzekelo, kumbhobho wentsimbi oxande one-arc ejikelezayo R, A=1.0MM, i-diagonal=1.15MM, uyazi njani i-engile ye-R? Ukuba ngumbhobho wentsimbi osikwere one-arc, ingaba indlela yokubala iyafana? I-rectangle inobude buka-A kunye nobubanzi buka-B, i-diagonal ka-C, kwaye i-radius yee-arcs ezine zekona R ilingana. Bala ubungakanani be-R ngale fomyula ilandelayo: (C/2-R) ^ 2=(A/2-R) ^ 2+(B/2-R) ^ 2 C ^ 2/4-CR+R ^ 2=A ^ 2/4-AR+R ^ 2+B ^ 2/4-BR+R ^ 2 4R ^ 2-4 (A+BC) R+(A ^ 2+B ^ 2-C ^ 2)=0.
Kufuneka kugxininiswe apha ukuba i-engile ye-R yetyhubhu esezantsi engxande ayibhekiseli kwi-arc, kodwa kwi-engile esembindini. I-arc ibhekisa kwicandelo elikujikelezo, kwaye i-engile ebandakanyiweyo yomgca ophakathi kweziphelo ezibini ze-arc kunye nesembindini yi-engile esembindini. Ekubeni ujikelezo lwesangqa luyi-2 π R kwaye i-engile esembindini ehambelanayo yi-2 π, ubude be-arc obuhambelana ne-engile esembindini yeyunithi yi-2 π R/2 π=R. Ke ngoko, ubude be-arc obuhambelana nayo nayiphi na i-engile esembindini i-a (iyunithi ye-radian)=aR buyafunyanwa. Iindlela zokulinganisa kunye nezixhobo ze-engile ye-engile ye-R yesikwere ziquka i-R gauge kunye ne-projector. I-R gauge ingasetyenziselwa amanqaku atyebileyo, iprojektha yamanqaku amancinci, kunye ne-CMM kwiimfuno eziphezulu.