Thaum nws los txog rau peb-coordinate ntsuas tshuab (CMM), qhov tseeb thiab qhov tseeb ntawm kev ntsuas yog qhov tseem ceeb. Cov tshuab no yog siv rau hauv ntau yam lag luam xws li aerospace, automotive, kev tiv thaiv, kev kho mob, thiab ntau ntxiv kom ntseeg tau tias cov khoom tsim tawm ua tau raws li cov lus qhia tseeb thiab ua tau raws li cov qauv xav tau. Qhov tseeb ntawm cov tshuab no yog nyob ntawm qhov zoo ntawm lub tshuab tsim, lub kaw lus tswj hwm, thiab ib puag ncig uas lawv ua haujlwm. Ib qho tseem ceeb uas ua lub luag haujlwm tseem ceeb hauv kev ua kom qhov tseeb ntawm CMM ntsuas yog lub hauv paus granite.
Granite yog ib lub pob zeb ntuj uas muaj zog thiab ruaj khov, thiab tsis hloov pauv kub. Nws muaj qhov ruaj khov, tsis tshua muaj thermal expansion, thiab tsis yooj yim co, ua rau nws yog ib yam khoom zoo rau CMM bases. Cov khoom no kuj tiv taus kev hnav, xeb, thiab deformation thiab yooj yim rau kev saib xyuas, ua rau nws yog ib qho kev xaiv ntev rau CMMs.
Hauv cov tshuab ntsuas peb-coordinate, lub hauv paus granite muab qhov chaw ruaj khov thiab sib npaug los txhim kho lub tshuab cov qauv thiab cov khoom. Qhov ruaj khov ntawm granite ua kom ntseeg tau tias CMM tsis cuam tshuam los ntawm cov yam ntxwv ib puag ncig xws li kev hloov pauv kub, kev co, lossis kev txav mus los hauv av, ua kom ntseeg tau tias kev ntsuas raug thiab rov ua dua.
Lub hauv paus granite kuj yog ib qho tseem ceeb hauv kev tswj hwm qhov sib dhos ntawm lub tshuab cov axes. Txhua qhov tsis sib dhos ntawm cov khoom siv hauv tshuab tuaj yeem cuam tshuam rau qhov tseeb ntawm kev ntsuas, vim tias qhov yuam kev tuaj yeem ua rau muaj ntau ntxiv thoob plaws hauv qhov ntsuas. Nrog lub hauv paus granite ruaj khov thiab khov kho, cov khoom siv hauv tshuab tau ruaj khov, thiab lub tshuab cov axes tseem sib dhos, yog li txo qhov yuam kev thiab ua kom muaj qhov tseeb ntau dua hauv kev ntsuas.
Lwm yam uas ua rau granite yog cov khoom siv zoo tagnrho rau CMM bases yog nws lub peev xwm los tiv taus thermal expansion. Qhov kub ntawm ib puag ncig tuaj yeem cuam tshuam rau qhov tseeb ntawm kev ntsuas, vim tias txhua qhov kev hloov pauv ntawm qhov kub thiab txias tuaj yeem ua rau cov khoom siv hauv lub tshuab nthuav dav lossis cog lus. Txawm li cas los xij, granite muaj cov coefficient qis ntawm thermal expansion, uas txhais tau tias nws shrinks thiab nthuav dav me ntsis hauv qab qhov kub thiab txias hloov pauv, ua kom ntseeg tau tias kev ntsuas raug.
Xaus lus, lub hauv paus granite hauv CMM yog ib qho tseem ceeb uas ua rau lub tshuab ntsuas tau qhov tseeb. Nws qhov ruaj khov, qhov tawv, thiab kev ywj pheej rau cov yam ntxwv ib puag ncig xws li kev hloov pauv kub, kev co, thiab kev hnav ua rau nws yog cov khoom siv zoo tshaj plaws rau CMM lub hauv paus. Yog li ntawd, CMM nrog lub hauv paus granite ua kom ntseeg tau tias kev ntsuas yog qhov tseeb thiab rov ua dua, ua rau nws yog ib qho cuab yeej muaj txiaj ntsig thoob plaws hauv kev lag luam uas qhov tseeb yog qhov tseem ceeb.
Lub sijhawm tshaj tawm: Lub Peb Hlis-22-2024