Cov txheej txheem ntawm yuav ua li cas ua qauv nrog 2D cov ntaub ntawv duab.Cov hauv qab no yog 2D:
Ua ntej tshaj plaws, kuv pom zoo li 2D.Yog tias kuv xav ua qauv, kuv thawj zaug txheeb xyuas thiab qhia meej txog kuv txoj kev xav.Raws li qhov chaw, kuv tuaj yeem pom kwv yees li rau sab, nce thiab nqis, sab laug thiab sab xis, pem hauv ntej thiab nraub qaum.
1. Hauv qab dav hlau.
2. Sab saum toj-curved nto: qhov saum npoo yuav tsum tau sib cais, thiab cov kev txwv cuam tshuam feem ntau yog ua los ntawm seemC-C thiab sectionD-D.
3. Sab laug, sab xis, pem hauv ntej thiab nraub qaum-dav hlau: Muaj cov cua ntsawj ntshab ntawm lub dav hlau.Hauv qhov no, extrude + cov qauv feem ntau yog siv los kos.Koj tuaj yeem kos qhov sib thooj thiab kos nrog cov lus txib saum npoo, tab sis cov txheej txheem yog cumbersome.
Tom qab lub tswv yim ntawm cov duab dav dav tau txiav txim siab, ua tib zoo saib cov ntsiab lus, feem ntau yog cov duab plaub thiab lub voj voog, uas tsis cuam tshuam rau tag nrho cov duab, kos duab sib cais, thiab lub tswv yim tiav.
Hauv qab no yog qhov ua tiav rendering, thov xa mus rau:
Tswv yim:
1. Coordinate system txoj hauj lwm xaiv: feem ntau xaiv qhov chaw uas qhov chaw pib ntawm qhov loj me yog qhov feem ntau los yog qhov chaw nruab nrab ntawm daim duab symmetrical.Yog tias koj saib ntawm daim duab, kev sib tshuam ntawm seemC-C thiab DD yog qhov zoo tshaj plaws.
2. Lub auxiliary nkhaus peb siv thaum kos duab yuav tsum tau hloov mus rau hauv auxiliary kab (dashed kab) nyob rau hauv lub sij hawm, uas yog tshwj xeeb tshaj yog tseem ceeb rau complex sketches.
Coordinate keeb kwm: nce thiab nqis symmetrical, sab laug thiab txoj cai raws li seem DD P7 = 81 + 26/2.
Daim duab kos duab nyob rau hauv qab yog ua tiav.
Tswv yim:
1. Up thiab down symmetry:
Sab saum toj arc daim iav mus
Qhov nruab nrab ntawm ob lub arcs ntawm sab laug thiab sab xis yog ntawm XC
2. Thaum txiav qhov nkhaus, ua tib zoo saib xyuas seb puas muaj cov kab luv luv nyob hauv cov ces kaum
3. Thaum lub ntsiab lus txwv nyob rau ntawm txoj kab ncaj nraim, tus cwj pwm zoo dua yog xaiv txoj kab ncaj nraim ua ntej, thiab tom qab ntawd nws yog qhov nrawm dua los xaiv qhov taw tes.
Tshooj
DD ntau lawm, vim tias tom qab peb qhov kev sib koom ua ke raug xaiv, Tshooj DD tuaj yeem xaiv lub dav hlau XZ ncaj qha
Tswv yim:
Thaum ua qhov chaw zoo, qhov nkhaus kos feem ntau yog me ntsis ntev dua qhov loj, thiab qhov chaw ua tom qab yuav loj me ntsis, uas yooj yim rau qhov sib ntxiv thiab rho tawm.Tsuas yog cov kev txwv loj.
Tshooj
CC ntau lawm, vim tias tom qab peb qhov kev sib koom ua ke raug xaiv, Tshooj CC tuaj yeem xaiv lub dav hlau YZ ncaj qha.
Extrude cov khoom ntawm peb lub cev tseem ceeb.
Tswv yim:
Qhov siab ntawm Extrude yuav tsum siab tshaj qhov siab tshaj plaws ntawm cov khoom kom ntau li ntau tau (qhov siab tshaj plaws yog cim li 25, thiab qhov siab ntawm no yog 50), thiaj li yuav pab txhawb kev sib txuas ntxiv thiab rho tawm haujlwm.Tsuas yog cov kev txwv loj.
Teeb lub kaum sab xis ntawm cov lus nug.
Qhov kev txwv nkhaus ntawm qhov saum npoo tau kos
Saum saum npoo ntau lawm: siv cov lus txib swept.
Tswv yim:
Nyob rau hauv lub thawv hais kom ua ntawm sab xis, khij lub Preserve zoo li ntau li ntau tau, kom lub nto tsim yog ntau nyob rau hauv txoj kab nrog rau cov kev txwv ntawm lub nkhaus peb kos.
Txiav peb lub cev tseem ceeb nrog rau saum npoo peb cheb tawm kom tiav cov duab yooj yim ntawm sab saud.
Kos cov duab kom ntxaws ntawm cov square ntawm sab laug ntawm cov khoom.Raws li Tshooj CC thiab seem DD, cov duab ntawm lub xwmfab npaj rau ntawm qhov chaw hauv qab tuaj yeem txwv.Daim duab saum toj no yog daim duab kos rau ntawm XY dav hlau.
Tshooj CC loj R200, R195 thiab seem DD
Rau R300, R295, peb siv offset-5 nyob rau sab sauv kom tiav cov nto nrog ib tug me R, thiab cov nyhuv tiav yog raws li nyob rau hauv daim duab hauv qab no.
Npaj cov duab plaub loj dua tsuas yog kos rau ntawm qhov chaw qis rau saum npoo ntawm R300.
Npaj cov duab plaub me me tsuas yog kos rau ntawm qhov chaw qis rau saum npoo ntawm R295.
Daim duab ntawm cov khoom tom qab zais lub cev tseem ceeb yog qhia hauv daim duab.
Los ntawm
Curve kos plaub txoj kab nqes hauv daim duab saum toj no.
Tswv yim:
1. Nco ntsoov tias qhov pib thiab kev taw qhia ntawm cov duab plaub sab saud thiab sab qis yuav tsum yog tib yam, txwv tsis pub cov duab yuav raug hloov pauv.
2. Kev khaws cov duab yuav tsum raug xaiv, txwv tsis pub yuav tsis muaj ntu ntawm txhua ob lub ntsej muag, kev hloov pauv du, thiab tsis muaj txoj hauv kev rau chamfer.
Xyuas Preserve shape nyob rau sab laug, thiab uncheck Txuag ntawm sab xis
puab, thov xyuam xim rau qhov sib txawv ntawm lub ces kaum.
Tso tawm qhov chaw uas nws qhov kev ncua deb yog -5 ua ntej.
Tom qab trimming lub ntsej muag ntawm plaub ntu tshiab tsim, raws li qhia hauv daim duab saum toj no.
Tom qab xaws ob lub dav hlau, hloov tag nrho saum npoo.
Qhia lub cev khoom ntawm cov khoom, koj tuaj yeem pom tag nrho cov duab raws li qhia saum toj no
Patch tag nrho saum npoo tom qab sew mus rau lub ntsiab lub cev.
Kos qhov nruab nrab ntawm tus kheej ntawm sab xis thiab ntxig ib qho taw tes.
Xaiv lub ntsiab lus uas peb tau cim nrog qhov loj me thiab kos tus kheej kheej.
Ua Boolean rho tawm ntawm lub cev thiab tus kheej.
Tau peb cov duab tag nrho, tsuas yog chamfering thiab plhaub.
Tswv yim:
1. Xaiv qhov kev txiav txim ntawm chamfering thiab plhaub: Pom qhov twg chamfer vojvoog thiab lub plhaub phab ntsa thickness loj dua, ua qhov loj dua ua ntej.Rau daim duab no, chamfer cov ces kaum loj me ntsis, thiab chamfer ua ntej.
2. Ntau chamfers nrog txawv radii, kos nyob rau hauv kev txiav txim los ntawm loj mus rau me me
Nco ntsoov tias thaum xaiv qhov ciam teb, cov kev taw qhia ntawm cov khoom siv feem ntau yog nyob ntawm seb cov khoom seem yog sab nraud lossis sab hauv qhov nkhaus.
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Lub sij hawm xa tuaj: Mar-10-2021