Kev soj ntsuam ntawm qhov raug precision machined qhov chaw: General Shaft

I. Cov yam ntxwv ntawm cov ncej dav dav

Ncej qhov chaw yog rotating qhov chaw uas nws ntev yog ntau tshaj lawv txoj kab uas hla.Lawv feem ntau yog tsim los ntawm sab nraud cylindrical nto, conical nto, threads, splines, keyways, transverse qhov, grooves thiab lwm yam nto.Cov ncej dav dav tau muab faib ua plaub pawg raws li lawv cov yam ntxwv: cov ncej du, cov ncej ncej, cov ncej hollow thiab cov ncej tshwj xeeb (xws li crankshafts, ib nrab shafts, camshafts, eccentric shafts, cross shafts thiab spline shafts, thiab lwm yam).

II.Dimensional tolerances ntawm general ncej

Lub ntsiab ntawm qhov chaw ntawm cov ncej feem ntau muab faib ua ob pawg: ib qho yog cov ntawv xov xwm sab nrauv uas phim lub nplhaib puab ntawm cov kabmob, uas yog, cov ntawv xov xwm txhawb nqa, uas yog siv los txiav txim siab txoj haujlwm ntawm cov ncej thiab txhawb nqa ncej.Qhov siab kam rau ua theem siab dua, feem ntau Nws yog IT5 ~ IT7;lwm hom yog phau ntawv journal uas koom tes nrog ntau qhov chaw sib kis, uas yog, cov ntawv xov xwm sib txuam, thiab nws qhov kev kam rau siab
Qib qis me ntsis, feem ntau IT6 ~ IT9.

III.Nto roughness ntawm general ncej

Lub machined nto ntawm tus ncej muaj qhov xav tau ntawm qhov roughness, uas feem ntau txiav txim siab raws li kev ua haujlwm thiab kev lag luam ntawm kev ua haujlwm.Qhov saum npoo ntawm cov ntaub ntawv txhawb nqa yog feem ntau Ra0.2 ~ 1.6um, thiab cov ntawv xov xwm sib txuam ntawm qhov sib kis yog Ra0.4 ~ 3.2um.

IV.Kev soj ntsuam ntawm kev siv tshuab ntawm cov ncej dav dav

Rau cov khoom uas xav tau ntau dua precision, roughing thiab xov yuav tsum tau muab cais los xyuas kom meej qhov zoo ntawm cov khoom.Kev ua haujlwm ntawm cov ncej feem ntau tuaj yeem muab faib ua peb theem: ntxhib tig (nruj tig ntawm lub voj voog sab nraud, qhov chaw ntawm qhov chaw, thiab lwm yam), kev sib tsoo semi-tiav (ib nrab tiav ntawm ntau lub voj voog sab nrauv, cov kauj ruam, thiab sib tsoo. ntawm qhov chaw nruab nrab thiab qhov chaw me, thiab lwm yam), kev sib tsoo ntxhib thiab zoo sib tsoo (nruj thiab zoo sib tsoo ntawm txhua lub voj voog sab nraud).Txhua theem yog kwv yees muab faib ua cov txheej txheem kho cua sov.

VI.Cov ntaub ntawv thiab qhov khoob ntawm cov ncej dav dav

(1) Feem ntau, 45 steel feem ntau yog siv los ua cov khoom siv rau cov ncej.Rau shafts nrog precision dua, 40Cr, GCr1565Mn, los yog ductile hlau yuav siv tau;rau kev kub ceev, hnyav-load shafts, 20CMnTi, 20Mn2B, 20C thiab lwm yam carburizing steels lossis 38CrMoAl tuaj yeem siv.Nitrided hlau.
(2) Rau feem ntau ncej, puag ncig tuav thiab forgings feem ntau yog siv los ua qhov khoob;rau cov shafts loj lossis shafts nrog cov qauv complex, qhov chaw yog siv.Tom qab qhov khoob yog rhuab thiab forged, sab hauv fiber ntau cov qauv ntawm cov hlau tuaj yeem sib npaug ntawm qhov chaw kom tau txais lub zog tensile ntau dua, khoov lub zog thiab lub zog torsion.

VII.Kev kho cua sov ntawm cov ncej dav dav

1) Ua ntej ua, forging blanks yuav tsum tau normalized los yog annealed los ua kom zoo cov nplej sab hauv ntawm cov hlau, tshem tawm forging kev nyuaj siab, txo cov khoom hardness, thiab txhim kho processability.
2) quenching thiab tempering feem ntau yog npaj tom qab ntxhib tig thiab ua ntej semi-tiav tig kom tau txais cov khoom zoo txhua yam.3) Nto quenching feem ntau yog npaj ua ntej ua tiav, kom lub zos deformation los ntawm quenching tuaj yeem kho.4) Shafts nrog precision yuav tsum tau, Tom qab ib nrab quenching los yog ntxhib sib tsoo, tsis tshua muaj kub laus kev kho mob yuav tsum tau.