Nazarin daidaitattun sassa na injina: Janar Shaft

I. Halayen tsari na babban shaft

Sassan shaft suna jujjuya sassan da tsayin su ya fi diamita.Yawanci sun ƙunshi filayen silinda na waje, filaye masu ɗamara, zaren zare, splines, keyways, ramukan karkata, ramuka da sauran filaye.An raba sassan sassan gabaɗaya zuwa nau'i huɗu bisa ga halayen tsarin su: santsi mai santsi, ramukan tako, ramukan ramuka da ramuka na musamman (ciki har da crankshafts, rabin shafts, camshafts, shingen eccentric, giciye shafts da spline shafts, da sauransu).

II.Hakuri na girma na babban shaft

Ana rarraba manyan sassan sassan shaft sau da yawa zuwa kashi biyu: ɗaya shine jarida na waje wanda ya dace da zobe na ciki na ɗaukar hoto, wato, jarida na tallafi, wanda ake amfani da shi don ƙayyade matsayi na shaft da goyan bayan shaft.Matsayin juriya na girma ya fi girma, yawanci IT5 ~ IT7 ne;ɗayan nau'in ita ce mujallar da ke ba da haɗin kai da sassa daban-daban na watsawa, wato, mujallar da ta dace, da kuma juriya.
Matsayin yana ɗan ƙasa kaɗan, yawanci IT6 ~ IT9.

III.Fuskar saman shaft na gaba ɗaya

Mashin ɗin da aka yi amfani da shi na shaft yana da buƙatun ƙaƙƙarfan yanayi, waɗanda galibi an ƙaddara bisa ga aiki da tattalin arziƙin sarrafawa.Matsakaicin yanayin da ke cikin jarida mai goyan baya yawanci Ra0.2 ~ 1.6um ne, kuma jaridar da ta dace da sashin watsawa shine Ra0.4 ~ 3.2um.

IV.Nazarin fasaha na sarrafawa na sassan shaft na gaba ɗaya

Don sassan da ke da madaidaicin buƙatun, roughing da ƙare ya kamata a raba su don tabbatar da ingancin sassan.Za a iya raba sarrafa sassan shaft gabaɗaya zuwa matakai uku: m juyi (m juya na waje da'ira, hakowa na tsakiya ramukan, da dai sauransu), Semi-ƙara juyi (Semi-ƙara juyi daban-daban na waje da'irori, matakai, da nika). na tsakiya ramukan da ƙananan saman, da dai sauransu) , m da lafiya nika (m da lafiya nika na duk waje da'ira).Kowane mataki yana da kusan kashi zuwa hanyoyin magance zafi.

VI.Materials da blanks na janar shaft

(1) Gabaɗaya, 45 karfe ana amfani dashi azaman kayan don sassan shaft.Don shafts tare da daidaito mafi girma, 40Cr, GCr1565Mn, ko baƙin ƙarfe ductile za a iya amfani da su;Ana iya amfani da manyan magudanar ruwa, masu ɗaukar nauyi, 20CMnTi, 20Mn2B, 20C da sauran ƙarfe na ƙarfe ko 38CrMoAl.Nitrided karfe.
(2) Don sassan ramin gabaɗaya, sanduna zagaye da ƙirƙira galibi ana amfani da su azaman fanko;don manyan shafts ko ginshiƙai tare da sifofi masu rikitarwa, ana amfani da sassa.Bayan blank ɗin ya yi zafi da ƙirƙira, za a iya rarraba tsarin fiber na ciki na ƙarfe daidai gwargwado tare da saman don samun ƙarfin juzu'i mai girma, ƙarfin lanƙwasa da ƙarfi.

VII.Heat magani na janar shaft

1) Kafin aiki, ƙirƙira blanks dole ne a daidaita su ko anneal don tace hatsi na ciki na karfe, kawar da damuwa, rage taurin kayan, da haɓaka aiki.
2) Quenching da tempering ne gaba ɗaya shirya bayan m juya da kuma kafin Semi-kammala juya don samun mai kyau m inji Properties.3) Gabaɗaya ana shirya kashe saman ƙasa kafin a gama, ta yadda za a iya gyara nakasar gida ta hanyar quenching.4) Shafts tare da madaidaicin buƙatun, Bayan ɓarnawar ɓarna ko m niƙa, ana buƙatar ƙarancin zafin jiki na tsufa.