b) Ve khOi dh. kIWi Ir~ : + Command: pline (ve chu vi ngoai dU'm de, xem hloh chieu bang a hloh 1) From point: chiou bdng, hinh I. cho 1 diem tren man hinh tlng v6i diem g6c phili - dUm eua hinh Arc/Oose/ /Width/<Endpoint of line>: @-100,0 Arc/Close/ /Width/<Endpoint of line>: A (chuyen sang ve cung) Angle/Center/Close/ /Width/<Endpoint of are>: @O,loo Angle/Center/Close/ /Width/<Endpoint of arc>: L (chuy<!n sang ve line) Arc/Close/ /Width/<Endpoint of line>: @100,0 Arc/Close/ /Width/<Endpoint of line>: C + Command: circle (ve 2 trelO ~50, tjl70) 3P/2PfITR/<Center point>: CEN of (bat tam cung tron ella dl1Cmg pline da ve) Diameter/<Radius>o: 25 Command: .J 3P/2PfITR/<Center point>: CEN of (bAt tam tron ~50 dii vel DiameterI<Radius>o: 35 * SOLEXT: de nang dUCmg pline va 2 tron dii ve len thanh cae solide Command: solext (ho~c MODEL>ExtIude) 154 Select regions, popyline and circle for extrusion Select objects: ch9n dl1Cmg pline Select objects: .J Height of extrusion: 30 (chieu cao nang ) Extrusion taper angle<>: 0 (g6c vu6t bAng 0) . Command: .J Select regions, papyline """'.!'~for .~Il\isiQll : . sae.:t.oljjl#l:,~~~~,.'7l!i::·C;;;c;< . _ ' .' : -,'.;- ;:c. "'''t::;~:~->/"'.>~'>~'~''-;.J:-r,-'' J~. ' ~l~.~JCPl$~.~;~,· !.>';. ;;<:~' - -'., :,\f;:,~-_\ ',"_'-';':,_, . Height of extlu'ion: '110 . , " ; Extrusion-taper angle<D::>: .J c) Velhdnh hlnh h¢ptrin ili': • SOLBOX: ve kh6i chi! nh~t Command: solbox (ho<\ic MODEbPrimitives>box) Baseplane/Center/<Comer of box>o: END of (bat ldinh trtn-btn phiti cua de, Cube/Length/<Other comer>: L (cho chieu dai cae qmh) Length: -30 (huang x) Width: 100 (huang y) Height: 90 (huang z) * UCS chQn 0; chuytn UCS tm 1 dinh tren-tnii kh6i hQp lIen de'de ve dinh tron PLINE: vi!: dl1bng profit (d~g) dong kin eua riinh ](hoet tcen kh6i ht)p Command: pline From point: MID of (bat diem giiia 1 c~ dlii ben tnH m~t tren kh6i hQp) Current line-width is 0 Arc/Close/ /width/<Endpoint of line>: @0.25 Arc/CIose/ /width/<Endpoint of line>: @7,0 Arc/Close/ /width/<Endpoint of line>: @5,7 Arc/Close/ /width/<Endpoint of line>: @6,0 Arc/Oose/ ./Width/<Endpoint of line>: @5,-7 Arc/Close/ ./Width/<Endpoint of line>: @7,O Arc/Close/ /Widt!t/<Endpoint of line>: @O,-25 Arc/Close/ . /Width/<Endpoint of line>: C SOLREV: xoay duemg pline vira ve thanh solid tron xoay Command: solrev (hoac MODEL>Revolve) Select objects: chQn dubng profit vila vi! Select objects: .J Axis of revolusion-Entity/XIY/<Start point of axis>: END of (biit 1 diem mut c~nh dlii dl1Cmg prom, diem 1 cua t11lc xoay) End point of axis: END of (bat diem mllt thi! 2 qnh dai cua profil, diem 2 cua tfl,lc xoay) Angle of revolusion <Full circle>: J d) VI' 2 gan tT" l¥c giua de' pel khoi ht}p : • SOLWEDGE: veganhinhnem Command: sol wedge (ho~c MODEL>Primitives> Wedge) Base plane/<Comer of wedge><>: END of (bat dinh goe tnii-dum giila d€ va thanh tr~n) Length: -30 (dQc x) Width: 12 (dQC y) Height: 30 (dQc z) * COPY: t<:,o ban sao thiinh gm thu 2 ben phM. e) vetO xuyen ngang $24 : * UCS ehQn 0: ehuyen ues tm ti€p diem eua do~n thang va eung tron tr~n ptine 155 • SOLCYLE: vo If\l ngang ~24 co m~t phi\ng day (ZX) Command: soleyl (hoij.c MODEL>Primitives>Cylinder) Baseplane/EllipticaV<Center point><O,O,O>: B (chQo m~t ph~g co sa ZX) Baseplane by Entity/Last/ /XY (YZ/ZXI<3 points>: ZX Point on ,ZX plane<O,O,O>: .J Baseplane/Elliptieal/<Center point><O,O,O>: 0,0,55 (eho tam day trv) Diameter/<Radius><>: 12 Center of other end<Height>: 100 f) T~o solid da h<fp : • SOLSUB: trueae kh6i Command: solsub (ho~c MODEL>Subtract) Source object Select objects: chc;m cae kh6i bj tnI lade vakh6i h¢p tren de va kh6i tIV ngoa.i ~70. Objects to subtract from them Select objects: chQn cae kh6i trir la kh6i tron xoay tn~n thanh, tr\l trong ~50 va tI1,l ngang $24. • SOLUNION: lien ke't tAt eli cac kh6i thanh I solid da hqp (v~t 1M 3D) • UCS chon W: chuyen ues ve h~ chullo. 2. T~o 4 khung cira 56 blob chieu • TILEMODE: d~t 10 O(ofl) chuyen sang khOng gian gia:y (PSPACE). • LIMITS: d~t giUi ~ vo A4(297,21O) va I~nh ZOOM/all "* LINETYPE chQn L: t\i duang hidden, center vao bin ve '" MVIEW: t~ 4 khung elm s6 hlnh chieu Command: mview (ho~c VIEW>Mview>4) ON/OFF/Hideplot/Fit/2/3/4/ ./<First point>: 4 Fit/<First point>: F (cho 4 khung vim khit man hlnh) • MSPACE: chuyiln v~ khOng gian mO hlob * VPOINT: de cht?n diem nhin tren tUng khung cua s6 hlnh thie'u bang, hinh chi€u dUng, hinh chieu qulh. Tru&: het kich con tro vao Clm s6 hinh chieu hang: Command: vpoint (ho~c VIEW>setview>view point) Rotate/<View point>: 0,0,1 Chu j: neu hinh chie'u bang can xoay, b~n dung l~nh ROTATE. BAy gia b~n Dch chu¢t vao cua s6 hinh chieu dUng (h~c hinh chieu c;pIh) va lam tuang W de cho diem nhm hinh chieu dUng (ho~c hmh chicu c~h). 156 • ZOOM: eho Iy I~ bang nhau(l) de chinh d(>l6n Iren tUng hlob chie'u Command: zoom AlliCenter/ jWindows/<Scale(XJXP». I • MVSETUP chqn A: chlnh vi Iri gi6ng dUng(V), gi6ng ngang(H) giila c8c hinh chieu: Command: mvsetup Align/Create/Scale viewport,/ /Undo: A (can chinh vi irQ Angle/HorizontallVertical alignmenti /Undo? V (chinh dUng) Base point: klch chu¢t vao hlnh chil!u dUng va g6 END of (b~t dinh phiU Irtn cua hinh chiou dUng lam diem co ,a) Other point: klch chu¢tvao hlnh chieu b~g Va g6 END of (b~t dinh iJ hinh chieu ~g tuong Ung) Angle/HorizontallVertical alignmenti /Undo? H (chinh ngang) Hlnb2 Base point: klch chu¢t vA<> hlJlb chiell dUn!! ~ II~ ;!lNP of (bAI dinh phiUtren Clla hinh chi61 dUng lam cIi~m c<J.o) . Other point: klch chu¢t vA<> hinh chieu c'!nh va g6 END of (bAt dinh 11 hinh chieu c'!nh tuang Ung) Angle/Horizontal/Vertical alignmenti /Undo? ,J Align/Create/Scale viewport'/ /Undo: ,J Kol qua ta duqc cae hinh chieu nhu Iren hinh 2. 3, Cilt hi> mN nim v~t th~ Kich con tco vao cua 56 hlnh chieu t~c do. 157 VPLAYER chQn N,T: t~o 16p m6i te.n Iii COPY3D de sau f~o m(H ban sao, khi dt 1/2 vi},t the se khOng Anh huang tai cac hlnh chieu khac. Sau d6 ch9n T (Thaw) lam tan lap COPY3D nAy i; tren khung cua s6 hlnh chi~u dUng va hlnh chieu truc do (Select) M cho vi¢': cat b6 c6 mc d¢ng den hinh chieu tIlJ.c do va hinh chieu dUng. Command: vplayer ?/Freeze{Thaw/Reset/NewfrzJVpvisdflt: New viewport frozen layer name(s): ? /Freeze{Tha w IReset,IN ewfrzJV pvisdflt: Layer(s) to thaw: COPY3D All/Selectl<Current>: S N COPY3D T Select objects: chi len khung cua s6 hinh chieu tI1:lc do Select objects: chi l~n khung ctra s6 hloh chieu dung Select objects: .J ?/Freeze{ThawIReset/Newfrz/Vpvisdflt: .J • LAYER chon S: dua lap COPY3D ra hi~n thm. COpy chQn AU: de t<.to m¢t ban sao mai. ~n chQn diem g6c copy va. diem dich copy trimg nhau : Command: copy Select objects: All <Base point or displac<:mlml >/Muhiple: 0,0,0 Secimd point of ~¢i 0,0,0 . , , ,,!,.;"'!<"'~ " ; " " • CHANGE' chuyen bin'~4lI (Last) g!6p"4-ayer} len \a COPY3D. ".,', _' > 'f : _____ "" ., Command: change Select objects: L (last) Sele~t objects: .J Propoties/<Change point>: P Change what propoty(Color/Elev/Layer/LType/ )?: LA New layer<>: COPY3D Change what propoty(Color/Elev/Layer/LType/ )?: .J Chu th{ch : sau khi chuyln ban sao di cac hinh chitu khac bien nui't khoi man hinh, b(ln dung l~nh REDRAWAU di hi¢n [(Ii ban vi day duo • VPLA YER chon F: lam dong (Freeze) lap 3D Cll iJ !ren 2 khung cua s6 hlnh chieu truc do va hlnh chieu dUng, chi co thi tac dQng len lap COPY3D hien thai. 158 Command: vplayer ? /Freeze{Thaw/Reset,INewfrzJV pvisdflt: F Layer(s) to Freeze: 3D All/Selectl<Current>: S Select objects: chi len khung cua s6 hinh chieu lIVe do Select objects: chi len khung cim s6 hlnh chitu dUng Select objects: .J ?/FreezefThaw/Reset/Newfu}Vpvisdflt: .J 1(1 UCS: chuyen ues tOi di~m giiia cua q.nh dum de, va xoay m~t (XY) Iii m~t cat. • SOLCUT: cAt bb lfl v~t thE bbi m~t phAng (XY) Command: Solcut Select objects: <ChQll v~t ~ 3D> Select objects: .J Cutting plane by Entity/ /XY {YVZJ{j<3 points>: XY Point on XY plane <0,0,0>: .J Both side/<Point on desired of the plane>: <ch<;>n 1 diem b ben phai kh6i 3D> BHATCH: g~ch m~t cat v~t 1i~u tren m$t cat (XY) cua v~t the (nhu lrong 2D) UCS/P: de chuyen h~ ues ve vi tri eli 4. Holm chinh hlnh chieu tr~c do (TDO) &m chuOt vao cua s6 hlnh chieu true do. . . . • VPLAYER chQllN.T: de ~o lapmm ten IA MCAT vA lAm tan lap nay. Command: vplayer . ?/FreczefThaw/Reset/Newfl7/Vpvisdflt: New viewportfrozen layer name(s): ?/FreczefThaw/R5set/Newfrz/Vpvisdflt: Layer(s) to thaw: All/Select/<Current>: ?/FreezefThawIR5set/NewfrzNpvisdflt: N MCAT T MCAT .J • LAYER chqn S: dE dtta lap MCAT ra hi~n thOi . • CHANGE: dI! chuyenm~t cat sang lap MCAT. Command: change Select objects: <chQll m~t cat dii Ve> Select objects: .J Properties/<Change point>: P Change what property(Color/Elev/Lsyer/LType/ )?: LA New layer< >: MCAT Change what property(Color/Elev/Lsyer/LType/ )?: .J • LAYER chqn S: dua lap COPY3D ra hi~n thm . • SOLPROF: di~u khien hien i.nh kh6i 3D chi co cae duang bao vi~n. Command: Solprof Select objects: <chon kh6i 3D> Select objects: .J Display hidden profile lines on separate layer?<Y>: .J (co hi~n d.c dui'mg baa khuilt tren lClp rieng khOng?) Project profile lines on to a plane?<Y>: .J (cae dUOng bao d~t tren m~t ph&ng7) Delete tangential edges?<Y>: .J (x6a cae qnh tit!p xuc giUa cae m~t?) • LAYER chon?: de xem ltn lClp chUa duang khuilt tren tfllc do (vi d~: PH-3E23). • VPLAYER chon F: Him dOng cac lClp COPY 3D, PH-3E23. hinh chieu tfllc do chi con cae dUCmg bao thtfy. Command: vplayer ?/FreezefThaw/Reset/Newfrz/Vpvisdflt: F New viewport frozen layer narne(s): COPY3D, PH-3E23 All/Selectl<Current>: -l ?/Freeze/Thaw/Reset/NewfulVpvisdflt: -l • UCS chon V: chuy~n h~ ues tffi vi tr! c6 (XY) song song vm man hinh d!! hi~u chinh hlnh chi€u ~c do. • Dung clk~nh ~" cllinll : ' + EXPLODE: pbAn fa kMi ~t 1M 3D M h$I chinh. + PEDn:: 46i MrQng om (width) • UCS chQn P: .chuy~ tJ1:S'Vf'vi trl cu. 5, Hoan cbinh blnb <bleu dt'mg (HCI) - Kfch COn trb vao cira s6 hlnh chit!u dUng. • VPLAYER chonN,T: d!!4-0IClpmm(N)liiHClv1i!amtan(1)cacl&pHCl,MCAT de hi~n l~i m~t cat rei hinh chit!u dUng. • LAYER chon S: dua lClp mm HC) ra hi~n tMi. • SOLPROF: di~u khi~n hi~n inh hinh chi€u dUng chi co cac duang baD vi€n. • LAYER chon 1: xem ltn lClp duang khuilt" hinh chi€u dUng (vi d~: PH-3E21). • VPLA YER chon F: L\m dOng 2 lClp : COPV3D, PH-3E2l. Hinh chi(u dUng chi cOn cae duang bao thay. • ues chon V: chuy~n h~ ues tm vi tri cO (XY) song song vm man hinh de hi~u chinh hinh chi€u dUng . 160 . Dung cae l~nh hi~u chinh : + EXPLODE: ph~n fa kh6i v~t the 3D M hi~u chinh hinh chieu dUng. + ve th~m d\Icrng t:n;Ic, ghi kich thu6c + PEDlT: dOi b<! rQng net (width) 0.5 • UCS ch9D P: chuy~n ues v~ v1 tri cu. 6. Hoan chinh hlnh chieu bilng (HC2) Kich con tro vilo cua s6 hinh chieu bang. 1/1 VPLA YER Chqll N,T: t<,l.o lap mm co len Iii HC2 va lam tan lOp nay. • LA YERch9n S: dua lOp HC2 ra hi~n thili. SOLPROF: dieu khien hi~n anh hinh chieu bang chi co cae dubng bac vien. • LAYER ch9n?: xem ten lOp duang khu~t iJ hlnh chieu b~ng (vi d u : PH·3E22). • VPLAYER ch9n F: lam d6ng 2 lOp 3D. PH·3E22. Hlnh chieu b~g chi con cac dubng bao th~y. 1/1 UCS chQn V: chuyen h¢ ues tm vi tfi c6 (XY) song song v& man hinh de hi¢u chinh hinh chieu bAng. Dung cae l~nh hi~u chinh : + EXPLODE: phan rii kh6i v~t the 3D d~ hi~u chlob hlnh chieu b~ng. + ve tn,lc, ghi kich thuac + PEDlT: dbi·be r(lng net (width) 0.5 1/1 ues ch9n P: chuyen ues ve V! tri cu. 7. Hoiln chinh hlnh chieu canh (HC3) Kich con tro vao cira s6 hinh ehieu qnh. 1/1 VPLAYER chQn N,T: ~o lap mm co ten He3 va lam tan lap nay. • LAYER chon S: dua lOp HC3 ra hi~n thili. 1/1 SOLPROF: di~u khien hi¢n lmh h'tnh ehieu bang chi c6 ca.c dubng bac vien. • LAYER ch9n?: xem ten lOp duang khua't iJ hlob chieu c~ob (vi d u : PH·3E20). • VPLA YER ch9n F: lam d6Dg 2 lOp 3D. PH·3E20 UCS ch<;>n V: chuyen h¢ ues tm vi tTi c6 (XY) song song vai man hlnh. Dung cae l~nh hi¢u chlnh : + EXPLODE: phan dii khoi v~t thi! 3D de hi~u chlob hlob chieu bang. + ve t~e, ghi kich th11d'e, dimg BHATG-I gl;lch m~t cat. + PEDIT: ddi be rMg net (width) 0.5 * UCS chQn P: ehuyen UCS ve V! tfi cu. 8. Hoan chinti toan b(\ ban ve * LAYER chQn F: la.m dOng lap 3D de be cae khung eua cae eua s6 va hi~n ll;li chi d.c hinh chieu th6i. PSPACE: ehuyen sang kh6ng gian gi:iy phAng de ve them khung ban ve, khung len va viet chii' de co ban vi! hoan chinh. 161 . sae.:t.oljjl#l:,~~~~,.'7l!i::·C;;;c;< . _ ' .' : -, '. ;- ;:c. "'''t::;~: ~-& gt;/"'.>~'>~'~'&apos ;-; .J:-r ,-& apos;' J~. ' ~l~.~JCPl$~.~;~,·. !.>';. ;;<:~' - -& apos;., :,f;:, ~-_ ',"_&apos ;-& apos;;':,_, . Height of extlu'ion: '110 . , " ; Extrusion-taper angle<D::>: .J. ?/FreezefThaw/Reset/Newfrz/Vpvisdflt: F New viewport frozen layer narne(s): COPY3D, PH-3E23 All/Selectl<Current>: -l ?/Freeze/Thaw/Reset/NewfulVpvisdflt: -l • UCS chon V: chuy~n h~ ues tffi vi tr! c6 (XY)