Teb ceev
Xaiv datums los ntawm qhov chaw thiab cov yam ntxwv uas nrhiav tus ncej hauv nws qhov kev teeb tsa tiag tiag: feem ntau yog thawj lub dav hlau mounting, ib qho kev taw qhia thib ob lossis lub ntsej muag, thiab lub tertiary feature uas kho clocking. Siv tib lub laj thawj rau kev tsim khoom, tom qab vuam machining thiab tshuaj xyuas, thiab kos npe rau qhov chaw ua haujlwm tom qab vuam. Lub datum yog ib qho kev siv-tsis yog ib qho kev cog lus tias qhov chaw zoo li welded twb yog lawm.
Welded tshuab thav ntawv feem ntau muaj cov phaj loj, raj, gussets, machined pads thiab bolt qauv. Yog hais tias txhua qhov feature yog dimensioned los ntawm ib tug txawv ntug, tus fabricator yuav tsim ib feem uas tshwm nyob rau hauv ib tug neeg qhov ntev, tiam sis tsis zaum kom raug ntawm tus neeg muas zaub lub hauv paus los yog mate nrog lub tshuab. Ib lub tswv yim datum tiv thaiv qhov kev cuam tshuam los ntawm kev txheeb xyuas qhov chaw nyob thiab qhov kev ntsuas cuam tshuam li cas rau ib leeg.
Cov lus qhia no yog rau OEM cov neeg yuav khoom, cov kws tsim kho tshuab thiab cov neeg yuav khoom npaj RFQs rau cov khoom siv hauv paus, twj tso kua mis, cov tiv thaiv thiab cov kev txhawb nqa welded. Nws complements post-weld machining thiabhnyav-phaj vuamtshuaj xyuas.
Yuav ua li cas ib tug datum scheme ua
Ib lub tswv yim datum tsim ib qho kev siv rov ua dua tshiab rau qhov ntev thiab geometric kam rau ua. Thawj datum tswj thawj qhov kev taw qhia, theem nrab tswj lwm qhov kev taw qhia, thiab tertiary kho qhov chaw seem lossis kev sib hloov. Daim ntawv qhia tseeb nyob ntawm qhov thiab daim ntawv thov; Qhov tseem ceeb yog tias lawv sawv cev rau kev sib cuag tiag tiag lossis nrhiav cov yam ntxwv.
ISO 1101: 2017 Daim Ntawv Pov Thawjtxhais cov lus cim rau geometrical specification thiab nws txhais lus. Siv cov qauv tam sim no lossis koj txoj kev tswj hwm kev kos duab tsis tu ncua, tab sis tsis txhob luam cov cim yam tsis tau txiav txim siab seb qhov vuam yuav ua li cas thiaj li tau txais kev txhawb nqa thiab tshuaj xyuas.
Pib nrog lub installation interface
Nug seb lub thav duab raug teeb tsa li cas. Puas yog nws zaum ntawm plaub lub ko taw, kev sib tw nruam, kev sib tw, lub hauv paus pob zeb lossis lwm qhov welded thav duab? Qhov twg tau txais anchors? Lub ntsej muag twg txhawb nqa lub twj tso kua mis, lub cev muaj zog lossis lub kaw lus? Cov lus teb no txheeb xyuas cov neeg sib tw datums ntseeg tau ntau dua li sab nraud silhouette.
Primary ntaub ntawv:qhov nto los yog dav hlau uas nqa lub ntsiab load los yog tsim qhov siab.
Secondary ntaub ntawv:ib lub ntsej muag perpendicular, rail lossis feature uas tsim cov kev taw qhia sab nraud.
Tertiary cov ntaub ntawv:ib lub qhov, kawg lub ntsej muag los yog ntxiv feature uas kho clocking thiab seem txhais lus.
Rau lub hauv paus welded, thawj datum tej zaum yuav yog ib txheej ntawm machined mounting ncoo es tsis yog cov raw hauv qab phaj. Yog tias tus neeg siv khoom tsis xav tau lub tshuab ua kom zoo, hais seb qhov kev txhawb nqa zoo li cas raug kuaj xyuas es tsis txhob hais qhov tseeb uas tsis tau teev tseg.
Datum xaiv thiab kev sib pauv
| Cov neeg sib tw siv | Pab tau thaum | Risk yog xaiv casually |
|---|---|---|
| Machined mounting pads | Cov khoom siv yuav tsum zaum ntawm qhov siab tswj los yog flatness. | Machining stock thiab post-weld sequence tsis tau txhais. |
| Anchor-qhov qauv | Ncej yog nyob ntawm bolts los yog dowels. | Qhov qauv yog dimensioned los ntawm ib tug tsis ruaj khov ntug. |
| Nruam puag phaj | Load yog faib thoob plaws hauv lub hauv paus los yog skid. | Weld distortion ua rau cov phaj nyoos tsis zoo siv. |
| Sab rail lossis lub ntsej muag kawg | Nthuav lateral alignment yog xav tau. | Cov txheej txheem sib txawv siv cov npoo sib txawv. |
| Centerline los yog bore axis | Rotating cov cuab yeej los yog ncej sib dhos tswj kev ua haujlwm. | Axis tsis tsim kom txog thaum machining. |
Txuas fabrication, machining thiab tshuaj xyuas
Cov txheej txheem datum yuav tsum muaj sia nyob txhua qhov txheej txheem. Thaum txiav thiab haum, siv cov npoo uas siv tau los yog cov ntsiab lus fixture uas cuam tshuam rau qhov kawg datums. Thaum lub sij hawm welding, ib theem zuj zus thiab fixturing yuav tsum tiv thaiv qhov chaw uas yuav tsim cov geometry zaum kawg. Thaum lub sij hawm machining, tshem tawm distortion ntawm qhov chaw uas tiag tiag nrhiav tus neeg siv khoom cov khoom. Thaum kuaj xyuas, ntsuas tib qhov chaw thiab nta cov duab siv.
Ib qho yuam kev feem ntau yog tshuaj xyuas lub qhov qauv los ntawm ib qho yooj yim sab nraud ntug, tom qab ntawd nruab lub thav duab los ntawm machined pads. Daim ntawv tshaj tawm tuaj yeem saib tiav thaum lub tshuab tseem xav tau shims. Kos qhov chaw tseem ceeb thiab hais kom tus neeg muag khoom hais txog cov txheej txheem tom qab vuam tshuab ua ntej tsim khoom.
Piv txwv li: yooj yim ntug piv rau functional datum
Xav txog lub hauv paus twj tso kua mis nrog plaub machined mounting pads thiab ib tug thauj tog rau nkoj-qhov qauv. Cov txheej txheem tsis raug qhov ntev ntawm lub qhov los ntawm cov npoo sab nraud ntawm welded puag phaj vim tias cov npoo no yooj yim mus cuag nrog daim kab xev lossis caliper. Tom qab vuam, cov npoo tuaj yeem txav ntawm nws tus kheej ntawm cov mounting pads. Lub thav duab yuav dhau ntawm ntug-rau-qhov qhov ntev tsis tau tso lub twj tso kua mis centerline tsis raug thaum ntsia. Lub tswv yim ua haujlwm tsim kom muaj lub dav hlau dav hlau ua lub hauv paus datum, ib sab pad lossis rail raws li qhov thib ob datum, thiab lub qhov dowel los yog qhov kawg feature raws li tertiary datum. Cov thauj tog rau nkoj thiab cov khoom siv qhov yog tom qab ntawd nyob ntawm qhov kev siv qhov system.
Kev tsim cov ntaub ntawv ib ntus tsis yog cov ntaub ntawv kawg nkaus xwb
Fixtures tej zaum yuav siv cov npoo npoo npoo, tack-welded nres lossis cov cuab yeej ib ntus thaum lub sij hawm haum. Cov no yog cov ntaub ntawv tsim khoom siv tau zoo, tab sis lawv yuav tsum txuas nrog rau cov ntaub ntawv ua haujlwm kawg. Daim duab kos duab thiab cov txheej txheem yuav tsum paub qhov txawv ntawm cov khoom siv ib ntus los ntawm cov khoom siv los yog sib sau ua ke siv rau qhov kev lees paub zaum kawg. Txwv tsis pub, tus neeg muag khoom tuaj yeem khaws lub khw muag khoom yooj yim thaum poob kev sib raug zoo uas tseem ceeb ntawm kev teeb tsa.
Yuav tshuaj xyuas li cas thawj tsab ntawv ceeb toom
Txheeb xyuas tias daim ntawv tshaj tawm qhia txog kev teeb tsa datum, cov ntsiab lus txhawb nqa thiab kev tshuaj xyuas theem-tsis yog ib daim ntawv teev cov nqi ntsuas. Paub meej tias qhov chaw ntawm lub qhov, ncoo qhov siab, flatness thiab bore alignment yog qhia los ntawm daim duab lub datum system. Yog tias kev ntsuas tau raug coj los ua ntej txheej los yog ua ntej machining kawg, tsab ntawv ceeb toom yuav tsum hais li ntawd. Cov duab lossis cov duab kos yooj yim tuaj yeem ua rau kev teeb tsa yooj yim rau kev tshuaj xyuas, tshwj xeeb tshaj yog thaum ob peb lub ncoo tsim lub dav hlau simulated datum.
Tsis txhob overload daim duab nrog nruj tolerances
Cov ntaub ntawv npaj cov cai; lawv tsis ua txhua yam nruj. Siv geometric kam rau ua qhov uas lawv tiv thaiv kev sib dhos, xws li mounting-pad flatness, txoj hauj lwm qhov chaw los yog bore alignment. Siv lub tswv yim dav dav rau cov yam ntxwv tsis muaj kev cuam tshuam thiab txheeb xyuas txoj kev tshuaj xyuas. Tightening txhua qhov ntev tuaj yeem yuam kev tsis tsim nyog machining, fixturing thiab rework.
Rau cov thav duab loj, xav txog kev soj ntsuam ib puag ncig. Cov qauv welded tej zaum yuav xav tau qib, kev txhawb nqa lossis kev ntsuas kub ua ntej ntsuas. Qhia seb qhov tshwm sim puas raug kuaj ua ntej txheej, tom qab txheej lossis tom qab machining kawg. Kev kho deg yog npaj los ntawm cov neeg muab khoom sab nraud, yog li cov kab ke yuav tsum tau pom zoo es tsis xav.
RFQ daim ntawv teev npe rau cov lus txhais
Piav qhov tiag tiag installation thiab mating interfaces.
Kos thawj, theem nrab thiab theem nrab cov ntaub ntawv ntawm daim duab lossis qauv.
Txheeb xyuas qhov chaw datum yog li-welded, machined lossis muab los ntawm cov khoom sib cais.
Dimension bolt qauv, bores thiab pads los ntawm kev ua haujlwm datums.
Qhia qhov machining sequence thiab Tshuag qhov twg tom qab vuam machining yuav tsum tau.
Txhais kev txhawb nqa, theem thiab tshuaj xyuas cov xwm txheej rau cov ncej loj.
Qhia seb qhov ntsuas puas tshwm sim ua ntej lossis tom qab ua tiav.
Thov ib daim ntawv tshaj tawm thawj zaug uas ua raws li tib lub tswv yim datum.
Confirmed peev xwm ntsiab lus
TIANHUA YIHE tau lees paub cov txheej txheem hauv tsev muaj xws li laser txiav, xuas nrig ntaus, khoov, CNC machining, tig, milling, MIG / TIG / laser / chaw thiab robotic vuam, sib tsoo thiab sib dhos. Cov ntaub ntawv muaj xws li carbon steel, stainless hlau, aluminium, tooj liab thiab galvanized ntawv; paub tseeb cov qib steel muaj xws li Q235, Q345 thiab Q355. Kev tolerances meej, machining Tshuag thiab cov txheej txheem tshuaj xyuas tseem nyob ntawm qhov project tshwj xeeb. Kev kho deg thiab kev kho cua sov yog npaj los ntawm cov neeg muag khoom sab nraud.
Xaus
Ib lub tswv yim zoo datum teb ib lo lus nug uas siv tau: "Yuav ua li cas cov ncej no yuav nyob thiab ntsuas thaum nws raug teeb tsa?" Xaiv cov ntaub ntawv los ntawm cov kev ua haujlwm sib txuas, nqa lawv los ntawm kev siv vuam thiab tshuab, thiab xav tau cov ntawv tshaj tawm thawj zaug siv tib lub logic. Qhov no txo cov kev sib cav txog qhov twg ntug tswj qhov ib feem thiab ua rau cov lus sib piv tau yooj yim dua.
Xa koj cov duab kos, qhov xav tau kom muaj nuj nqis, thiab cov ntsiab lus ntawm qhov chaw tiav rau andywang@qdthyhmetalfab.com rau kev tshuaj xyuas kev tsim khoom thiab hais lus.
Cov lus nug uas nquag nug
Puas yog lub phaj welded nyoos yog thawj datum?
Tsuas yog tias lub installation lees txais nws qhov xwm txheej zoo li-welded thiab kos duab txhais tau tias nws tau txais kev txhawb nqa thiab tshuaj xyuas li cas.
Yuav tsum datum yog lub ntsej muag machined?
Siv lub ntsej muag lub ntsej muag thaum nws ua haujlwm nrhiav cov khoom siv lossis tswj qhov siab tseem ceeb, flatness lossis kev sib dhos.
Muaj pes tsawg datums xav tau ib tug ncej?
Siv cov ntawv pov thawj txaus los txwv kev ua haujlwm ntawm kev ywj pheej; ib tug thawj, theem nrab thiab tertiary scheme yog muaj tab sis tsis yuav tsum tau.
Thaum twg yuav tsum tau tshuaj xyuas cov txheej txheem datum?
Tshuaj xyuas nws thaum lub sij hawm RFQ thiab ua ntej welding li fixture, sib lawv liag thiab machining Tshuag txhawb qhov kawg interfaces.
Yuav tsum txheej hloov datum tshuaj xyuas?
Nws ua tau. Qhia seb qhov chaw tseem ceeb puas tau npog, tshuab tom qab txheej lossis tshuaj xyuas ua ntej siv cov khoom tiav.
