Dab tsi yog geometric tolerances

ISO txhais geometric kam rau ua raws li "Geometrical product specifications (GPS)-Geometrical tolerancing-Tolerancing of form, orientation, location and run-out".Hauv lwm lo lus, "geometrical yam ntxwv" yog hais txog cov duab, qhov loj me, kev sib raug zoo, thiab lwm yam ntawm cov khoom, thiab "tolerance" yog "tolerance ntawm qhov yuam kev".Tus yam ntxwv ntawm "geometric kam rau ua" yog tias nws tsis tsuas yog txhais qhov loj me, tab sis kuj yog qhov kam rau ntawm cov duab thiab txoj hauj lwm.

Qhov txawv ntawm qhov ntev thiab geometric kam rau ua:

Cov txheej txheem ntawm kev sau cov duab kos duab tuaj yeem muab faib ua ob pawg: "dimensional tolerances" thiab "geometric tolerances".Dimensional tolerances tswj qhov ntev ntawm txhua qhov.

Geometric tolerances tswj cov duab, parallelism, inclination, txoj hauj lwm, runout, thiab hais txog.

Dimensional Tolerance Drawing

Geometric kam rau ua daim duab

Nws txhais tau tias "kom paub meej tias qhov chaw A tsis tshaj qhov sib npaug ntawm 0.02".

Vim li cas koj thiaj yuav tsum kos cov duab geometric kam rau ua?

Piv txwv li, thaum xaj ib phaj, tus tsim qauv tau teev qhov ntev ntev raws li hauv qab no.

A Band ntawm kam rau ua

Txawm li cas los xij, raws li cov duab kos saum toj no, cov chaw tsim khoom tuaj yeem muab cov khoom no.

A Band ntawm kam rau ua

Cov khoom yuav dhau los ua tsis tsim nyog lossis muaj qhov tsis zoo yog tias tsis muaj qhov sib piv tsis tau cim rau ntawm daim duab.

Cov chaw tsim khoom tsis yog lub luag haujlwm, tab sis theej tus tsim lub cim kev zam txim.Drawings ntawm tib seem cim nrog geometric zam tuaj yeem ua rau cov qauv tsim hauv qab no.Geometric kam rau ua cov ntaub ntawv, xws li "parallelism" thiab "planarity", yog ntxiv rau daim duab raws li cov ntaub ntawv qhov ntev.Qhov no yuav pab kom tsis txhob muaj teeb meem tshwm sim los ntawm kev kos cim qhov ntev ntev.

aParallelism kam rau uabFlatness kam rau uacDatum

Txhawm rau txiav txim siab, siv geometric kam rau ua tuaj yeem ua tiav thiab nthuav tawm sai li cas tus tsim qauv xav tau, uas tej zaum yuav tsis tuaj yeem ua tau nrog qhov ntev ntev.

Kev txhais hauv ISO

Kev sib txuas ntawm qhov loj thiab cov duab tau piav qhia zoo li no:

Kev qhia tshwj xeeb hauv ISO8015-1985uas tau pom nyob rau hauv daim ntawv qhia, xws li qhov loj thiab cov kev txwv, tsis sib xws nrog lwm qhov ntau thiab tsawg, txwv, lossis cov cwj pwm thiab ua haujlwm ntawm lawv tus kheej tshwj tsis yog tias tau teev tseg.

Raws li tau hais dhau los, txoj cai kev ywj pheej yog lub ntiaj teb tus qauv txhais los ntawm ISO.Txawm li cas los xij, qee lub tuam txhab Asmeskas yuav tsis ua raws li txoj cai ywj pheej raws li ASME (American Society of Mechanical Engineers) cov lus qhia.Txhawm rau kom tsis txhob muaj kev ntxhov siab thaum ua lag luam nrog cov tuam txhab txawv teb chaws, nws raug nquahu kom sib tham thiab qhia meej cov kev cai tshwj xeeb ua ntej.

Xiamen Ruicheng muaj kev sab laj pub dawb rau txhua tus qauv tsim.Xav tias dawb hu rau peb rau txhua qhov kev tsim khoom / tshuaj xyuas cov qauv xav tau.