I-angle ye-R yeshubhu yesikwele ichazwe kanjani kuzinga likazwelonke?

I-engeli ye-R epayipini lesikwele iyi-arc eguquguqukayo lapho kuhlangana khona izindiza ezimbili, ngokuvamile okuwububanzi obuyisigamu somugqa ophakathi we-engeli ye-R egobile. Inani le-arc egobile R ngokuvamile liphindwe izikhathi eziyi-1.5 ~ 2.0 kunobubanzi bepayipi. Usayizi we-engeli ye-R unqunywa ngokuya ngobukhulu bodonga lwepayipi lesikwele. I-engeli ye-R ihlukaniswe nge-engeli ye-R yangaphakathi kanye ne-engeli ye-R yangaphandle. I-R yangaphakathi ngokuvamile iphindwe izikhathi eziyi-1.5 ~ 2 kunobukhulu bodonga. Amashubhu ensimbi ayisikwele anama-engeli e-R ahlukene nawo angakhiqizwa ngokuya ngezidingo zomsebenzisi.
Isibonelo, ngepayipi lensimbi elingunxande eline-arc eyindilinga R, A=1.0MM, diagonal=1.15MM, uyazi kanjani i-engeli ye-R? Uma kuyipayipi lensimbi eliyisikwele eline-arc, ingabe indlela yokubala iyafana? I-rectangle inobude obungu-A nobubanzi obungu-B, i-diagonal engu-C, kanye ne-radius yama-arcs amane angamakhona u-R uyalingana. Bala usayizi we-R ngale ndlela elandelayo: (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.
Kufanele kugcizelelwe lapha ukuthi i-engeli engu-R yepayipi eliyisikwele elingezansi alibhekiseli ku-arc, kodwa ku-engeli ephakathi. I-arc ibhekisela engxenyeni esesilinganisweni, futhi i-engeli efakiwe yomugqa ophakathi kwezinhlangothi ezimbili ze-arc kanye nesikhungo yi-engeli ephakathi. Njengoba umjikelezo wendilinga ungu-2 π R futhi i-engeli ephakathi nayo ingu-2 π, ubude be-arc obuhambisana ne-engeli ephakathi yeyunithi ngu-2 π R/2 π=R. Ngakho-ke, ubude be-arc obuhambisana nanoma iyiphi i-engeli ephakathi a (iyunithi ye-radian)=aR buyatholakala. Izindlela zokulinganisa namathuluzi e-engeli yesikwele yepayipi engu-R zifaka i-gauge ye-R kanye ne-projector. I-gauge ye-R ingasetshenziswa amaphuzu amakhulu, i-projector yamaphuzu amancane, kanye ne-CMM yezidingo eziphezulu.