Amapharamitha weJomethrikhi Wemicu
Ukuqonda Imingcele Yejiyomethri Ebalulekile
- Ububanzi obukhulu (D noma d)
Ububanzi obukhulu buwububanzi obukhulu bentambo, obukalwa esiqongweni semicu yangaphandle kanye nasempandeni yemicu yangaphakathi. Inquma ngokuyinhloko usayizi ophelele webhawodi noma isikulufu. Ukulawula okunembile kwaleli pharamitha kuqinisekisa ukunemba okufanele kanye nokuqina kokuxhumeka.
- Ububanzi obuncane (D1 noma d1)
Ububanzi obuncane buwububanzi obuncane kakhulu bentambo, obukalwa empandeni yemicu yangaphandle kanye naseceleni kwemicu yangaphakathi. Ithinta ngokuqondile amandla okuqina wentambo. Ukwenziwa okunembile kobubanzi obuncane kubalulekile ukuze kuzuzwe ukusebenzelana okufanele phakathi kwezintambo zokukhwelana.
- I-Pitch Diameter (D2 noma i-d2)
Ububanzi bephimbo buphakathi phakathi kwamadayamitha amakhulu namancane futhi yilapho ugqinsi lwentambo lulingana nesikhala phakathi kwemicu. Ithonya kakhulu ukulingana phakathi kwemicu futhi iyipharamitha ebalulekile yokulinganisa ukunemba kwentambo. Ukuqinisekisa usayizi wephimbo onembile kuphumela ekuzinzeni okungcono koxhumo.
- I-pitch (p) - Imethrikhi
I-pitch ibhekisela ebangeni le-axial phakathi kwama-crests entambo aseduze. Ithinta isivinini somhlangano nokunemba kokuxhumeka. Izikhala ezinkulu zisiza ukuhlanganisa ngokushesha kodwa zinganciphisa amandla okubamba, kuyilapho izikhala ezincane zinikeza ukuxhumana okuqinile, okunembe kakhudlwana okulungele izinhlelo zokusebenza ezinomthwalo omkhulu.
- I-Engeli yochungechunge (α)
I-engeli yentambo i-engeli efakiwe eyakhiwe izinhlangothi ezimbili zephrofayili yochungechunge. Ama-engeli avamile ahlanganisa u-60° ochungechungeni lwe-metric kanye no-55° ochungechungeni lwe-British Standard Whitworth (BSW). Ama-engeli amakhulu akhulisa ukungqubuzana, athuthukisa izici zokuzivalela, okuyinzuzo ekuxhumekeni okuzinzile.
- I-Flank Angle (φ)
I-engeli ye-flank i-engeli ephakathi kwe-flank yentambo kanye nomugqa oqondile ku-eksisi. Imiklamo ehlukene ihlangabezana nezidingo ezithile:
Imicu engunxantathu: Ifanele ukuqiniswa kwenhloso evamile ngokuzikhiya okuthembekile.
Imicu ye-Trapezoidal: Ilungele izinhlelo zokusebenza ezithwala umthwalo osindayo njengeziqondiso zamathuluzi omshini.
Imicu yesikwele: Isebenza kahle ekudluliselweni kwamandla ngenxa yokungqubuzana okuphansi.
I-Sawtooth Threads: Ifanele izimo zokulayisha ezingaqondile, njengakumasistimu we-hydraulic.
- I-Tread Direction
Imiluko Esesandleni Sokudla: Okuvame kakhulu, qinisa uma iphendulwa ngokwewashi.
Imicu Esesandleni sobunxele: Isetshenziswa ezinhlelweni ezikhethekile lapho kufunwa izakhiwo ezimelene nokuxegiswa, njengakumathuluzi athile ajikelezayo.
Ukucaciswa Okujwayelekile kwe-Pitch ne-TPI
Ukukhetha iphimbo elifanele noma i-TPI kubalulekile ukuze uqinisekise ukusebenza kahle. Ngezansi kukhona ukucaciswa okuvame ukusetshenziswa:
- I-Metric Threads (Pitch)
M3: 0.5 mm
M4: 0.7 mm
M5: 0.8 mm
M6: 1.0 mm
M8: 1.25 mm (amaholoholo) / 1.0 mm (kancane)
M10: 1.5 mm (amaholoholo) / 1.25 mm (kahle)
M12: 1.75 mm (amaholoholo) / 1.5 mm (kancane)
M16: 2.0 mm (amaholoholo) / 2.0 mm (kahle)
M20: 2.5 mm (maholoholo) / 2.0 mm (kancane)
- I-Inch Threads (TPI)
#4-40 UNC/UNF: 40 TPI (UNC), 48 TPI (UNF)
#6-32 UNC/UNF: 32 TPI (UNC), 40 TPI (UNF)
#8-32 UNC/UNF: 32 TPI (UNC), 40 TPI (UNF)
#10-24 UNC/UNF: 24 TPI (UNC), 32 TPI (UNF)
1/4-20 UNC/UNF: 20 TPI (UNC), 28 TPI (UNF)
5/16-18 UNC/UNF: 18 TPI (UNC), 24 TPI (UNF)
3/8-16 UNC/UNF: 16 TPI (UNC), 24 TPI (UNF)
Amapharamitha wejometri wezintambo ayisisekelo ekusebenzeni kwawo nasekusetshenzisweni kwawo. Ngokuqonda le mingcele nokukhetha ukucaciswa okufanele, onjiniyela bangaqinisekisa izixazululo ezithembekile nezisebenzayo zokubopha eziklanyelwe izinhlelo zokusebenza ezithile. Ukuthi ukhetha izilinganiso zemethrikhi noma zombuso, inhlanganisela elungile yephimbo kanye ne-TPI iqinisekisa ukusebenza okuhle nokuphila isikhathi eside kuzilungiselelo ezahlukahlukene zezimboni.
Siyabonga ngokufunda, uma udinga ukubona okuningi kwalokho esikunikezayo ungalandela izixhumanisi ezingezansi!