Nrog rau kev siv dav dav ntawm cov tshuab hluav taws xob thiab kev txhim kho tom ntej ntawm cov tshuab loj xws li mining, metallurgy, nkoj thiab locomotives, ntau thiab ntau cov hlau yuav tsum tau tsim thiab txiav, thiab cov khoom siv hlau siv tau tsim los ntawm tooj liab thiab hlau rau. hlau. tus tswv tsev.
Txawm li cas los xij, tam sim no, muaj ntau hom kev sib tsoo tshuab cov khoom ua tiav los ntawm kev sib tsoo cov cav tov hauv CNC machining kev lag luam, thiab cov workpieces muaj ntau qhov sib txawv thiab xav tau kev ua haujlwm sib txawv. Piv nrog rau lub tshuab sib tsoo, kev sib tsoo lub log nrawm yog qhov sib txawv ntawm cov kab nrawm ntawm cov spindle grinder. Nws yog ib qho nyuaj rau kho qhov ceev ntawm spindle grinder kom tau raws li machining kab ceev ntawm lub workpiece grinder. Tsis tas li ntawd, vim muaj kev ntxhov siab thiab dabtsi yog khoov ntawm lub tshuab sib tsoo los ntawm cov txheej txheem kev sib tsoo, cov txheej txheem sib tsoo yuav tsim cov torques sib txawv ntawm cov khoom sib tsoo pub rau lub tshuab sib tsoo, uas yuav ua rau muaj qhov sib txawv ntawm cov zis nrawm / torque ntawm lub log sib tsoo. , thiab cov sib tsoo grinder yuav tsim kev vibration riam / burnt kab, thiab lwm yam., kev sib tsoo qhov tseeb yog qhov nyuaj rau lav, ua rau cov khoom tsis zoo, tus nqi qis thiab lwm yam.
Nyob rau hauv cov txheej txheem CNC machining, seb qhov kev xaiv ntawm qhov chaw ua haujlwm yog qhov tsim nyog lossis tsis txiav txim siab qhov zoo ntawm cov khoom, uas muaj kev cuam tshuam zoo rau seb qhov tseeb qhov tseeb thiab qhov kev sib koom ua haujlwm qhov tseeb ntawm cov khoom tuaj yeem lav tau, nrog rau kev ua haujlwm zoo. ua raws li kev npaj ntawm qhov chaw ntawm qhov chaw. Thaum lub workpiece ntsia nrog lub fixture, qhov kev xaiv ntawm positioning datum kuj yuav cuam tshuam rau cov complexity ntawm fixture qauv. Yog li ntawd, kev xaiv ntawm positioning datum yog ib qho tseem ceeb heev txheej txheem teeb meem.
Xaiv qhov chaw tseem ceeb raws li qhov ntxhib datum Txhawm rau kom ntseeg tau tias qhov kev ua haujlwm ntawm qhov tseem ceeb ntawm qhov chaw ua haujlwm yog me me thiab tsis sib xws, qhov saum npoo no yuav tsum tau xaiv raws li qhov ntxhib datum. Qhov tseem ceeb ntawm qhov chaw yog feem ntau yog qhov saum npoo ntawm cov khoom ua haujlwm uas yuav tsum tau ua haujlwm siab thiab ua haujlwm zoo, xws li cov lus qhia saum npoo ntawm lub txaj thiab qhov ntxaiv qhov ntawm lub taub hau ntawm lub tshuab dhos, uas yog txhua qhov chaw tseem ceeb. Yog li ntawd, thaum machining lub txaj thiab ntxaiv lub thawv, cov lus qhia rail nto los yog spindle qhov yuav tsum tau siv raws li cov lus ntxhib.
Xaiv lub unmachined nto raws li cov ntxhib datum Yuav kom paub tseeb tias txoj hauj lwm yuav tsum tau ntawm lub machined nto thiab unmachined nto, feem ntau unmachined nto yuav tsum tau xaiv raws li cov ntxhib datum. Yog hais tias muaj ntau yam unmachined nto ntawm lub workpiece, lub unmachined nto nrog cov kev xav tau siab dua nyob rau hauv txoj hauj lwm ntawm lub machined nto yuav tsum tau xaiv raws li cov ntxhib siv, thiaj li yuav xyuas kom meej qhov yuav tsum tau thiab ua rau cov duab symmetrical. Rau cov khoom ua haujlwm tau pom hauv daim duab 2, qhov eccentricity ntawm lub qhov khoob thiab lub voj voog sab nrauv yog qhov loj. Lub voj voog sab nrauv uas tsis tau ua tiav yuav tsum raug xaiv raws li qhov siv ntxhib, thiab cov khoom ua haujlwm yuav tsum tau muab khi rau hauv peb lub puab tsaig tus kheej-centering chuck los kho cov coaxiality ntawm qhov khoob. Qhov yuam kev raug tshem tawm thaum tho lub qhov, yog li ua kom cov phab ntsa tsis sib xws.
Cov ntxhib datum tsuas yog siv tau ib zaug hauv tib qhov kev taw qhia. Vim hais tias cov ntxhib datum nws tus kheej yog ib tug dawb paug nto tsis muaj machining, nws nto yog ntxhib thiab qhov tseeb yog tsawg. Yog tias nws siv ntau zaus, qhov yuam kev loj yuav tshwm sim.