3. Ve2 IH20 ciia go - I~nh UCS.chuyen ues tm g6c B; -I~nh soleyl chQn tam day In! dum (0,0.0), R=IS, h=1O (16 rong dum); -I~nh soleyl/B de cho tam day In! nhi> tren t~i'(O,O,IO), R=IO, h=40 (cao hon de); - I~nh solmove/tx20 vA ty20 de dlri 2 In! d6 tm dung vi trl; - I~nh solsub, kh6i bi trir lil de, glr, kh6i trir ta 2 16 In!. 4. V~ kho. chii' nh,t ben ph,,; - I~nh ues, dua h~ ues tm C; -I~nh solbox,dinh dOu lil C, L=-60, W=IOO, H=70. 5. V~ ranh cua khO; chI} nhj).t - I~nh UCS, dlri ues t6i D; - l¢nh pline ve profile Tanh a m~t tren kh6i elill nh~t (profile va tf1:1C khep kin pline); - I~nh solrev quay polyline quanh dulmg thi\ng n6i 2 diem gifta 2 qnh tren kh6i chii nh~)l t<.to thanh kh6i tron xoay; - l¢nh solsub, kh6i bi triI lit kh6i chu nh~t, kh6i tru la kh6i tron xoay. 6. T~o solid da h'1P - l¢nb solunion, chQn de, ga, kh6i chu nh~t. 7. T~o cae g6c lu(,ll1 - I~nh solfill, chQn 2 c~h dUng ben trai de, R=20; - l¢nh soltill, chQn c'.lIlh trai-du6i kh6i chu nh~t, R=15. Den dAy b~ do vo xong v~t the. Nhung de lilm ro cau ~o ben ttong v~t the, b~ ~o tMm m~t ciit vA g6c cat cho v~t the (hlnh 2) nbu sau: a) , ~ b) I '-/ • Hlnhl 8. TaO m~t dlt qua tam 2 16 cUa go - I~nh UCS, dlri M ues tm g6c mm 1A tam duimg trOn day dUm 10 In!; - l¢nh soisect, chQn m~t elit HI. (YZ); - l¢nh move, dCri. m~t cAt fa ngo~i. 138 9. T~o g6c cit - l~nh soleut, m~t phing cat la (YZ) va (ZX), lua ch9n B (both); - l~nh move dui ph.in gOc cat nhc, ra ngoai; - l¢nh solunion, ch(;m d.c pMn hi cal d~ ~o l<;li solid da hqp. 10. G\tch m~tclt - l¢nh bhatch g~ch m~t cat v~t the dang iJ trong m~.t ph~ng (ZX); -l¢nh UCS/z de xoay h¢ ues quanh z mQt g6c 90°, trung '-(oi m~t cat th6 2 cua v~t the. Bay gicr b~n dung l~nh bhatch d~ g~ch m~t cat thu 2. BAI T~P 15 Vo cita s6 trong 2D (hinh I) va dua vao khOng gian 3D (hinh2). Huang dan c6 sir di)ng cac I~nh PLINE, OFFSET. COpy. MOVE, DIVIDE, VPOINT ho~c DVlEW, CHANGE, SOLIDIFY. SOLSUB, SOLUNION. SOLMESH, HIDE . thea cae bu6c sau: '. 1. VO duimg bao cira s6 trong 2D (hinh I) - rna him viS khm thuy; - I~nh PLINE vo dulmg bao ngoal; - I~nh OFFSET vai khoimg cach = 10 M vo duang bao trong; - l~nh PLINE vo d6 thing dang fQng=4, dili han duemg bao trong nhung be han dUOng bao ngoai; viS fn;ic d6i x6ng thing d6ng ella d6 (hay viS do d ngoai); - I~nh PLINE vo d6 ngang rQng=4, dai hun 'duemg bao trong nhl1I1g be han dl1Cmg bao ngoai; viS ~c d6i xling Dam ngang cua do; - l~nh MOVE ho~ ALIGN d11i d6 dang, d6 ""l. , - - I ~ D' - '& , , , B , (,4. ngang v~o I1lm 0 cung tron cira s6;' mob 1 - l~nh DIVIDE chia dO(lIl AB (c~nh trong thing dUng) fa 3 ph4n; - l~nh COpy M copy d6 ngang xu6ng 2 ditm chiapbia dum. 2. T"o cira s6 trong 3D (hlnb 2) - l¢nh VPOINT vm ditmnhln 1,-I,l)h<$:DVlEW Mc6inlin6i5D; - I~nh CHANGEJthicknCs, chi~u . day khung ngoa; = 6, chi6u dAy d6 = 4;. - l~nh SOLIDIFY chuyen thAnh solid; - lenh SOLSUB, kh6i bi nil chi khung ~om ngoai, kh6i trir chi khung vom trong; - I¢nh SOLUNION lien ke"t l~i thanh kh6i da hqp. 3. Xem ilnh trong :m - I~h SOLMESH hi~n solid d~ng lum mesh; lfmb2 - £ 139 140 - L~nh HIDE xem v~t the! be cAc ducrng n6t khu~t ; ho~c RENDER d~ng t6 bOng. BAI T~P 16 qp ban vo chi ti€t GlA DO nhu hlnh 1. Sau day huang dan 1 cach vo: 0 '" til ; I : , , , , N , , , " I. 112 ,I R24 o ~l 1. Vo val Ih~ 3D aj Chudn bi bdn .t" kMi thrl,.: . • OPEN: l~ rna bOn.ekhl!i tluiYfvl dl/: M.d,i gj.N6u chilli c6th! ~ mm • VPOINT: cho dic!m nhln (1,-1,1) de .quan~aim v~t 1M 3D d~ hlnh chieu lI1!C do VUOng g6c dc!u. Command: vpoint Rotate/<View point>: i I,I • LAYER chon M: de! t~o I~ mm. Wn 18 3D ~ dua III hi~ !hOi . Command: layer ?/Make/Set/New/ON/OFF/ /Unlock: M New current layer <>: 3D ?/Make/Set/New/ON/OFF/ /Unlock: -' bjVi"2kMidt: • PLINE: dimg l~nh nay vo chu vi 1 chan d€ (hlnh 1) Command: pline From point: chi 1 dibn tily Y bang chu"t Arc/Close/Halfwidthl /Widthl<Endpoint of line>: @0,70 Arc/Close/Halfwidth/ /Width/<Endpoint of line>: A (M ve cung) Angle/Center/Close/ /Line/Radius/ /Widthl<Endpoint of arc>: .@36,0 Angle/Center/Close/ /Line/Radius/ /Widthl<Endpoint of are>: L (ve line) Arc/Close/Halfwidthl /Widthl<Endpoint of line>: @0,-70 Arc/Close/Halfwidth/ /Width/<Endpoint of line>: A (M ve cung) Angle/Center/Oose/ /Line/Radius/ /Width/<Endpoint of arc>: CL * CIRCLE: vi! 2 duemg tron 0 18 ben trong dUCmg pline do Command: circle 3P/2PfITR/<Center point>: CEN of (b3.t tAm cung tron cua pline da vel Diameter/<Radius>: 9 Command:.J (Hip 1~ l~nh de ve vong tron thil 2 tuoog n!, xem hinh 2a) 0) c) /Ilnhl • SOLEXT(Extrljde): nang dlllmg pline vA2 dullng tron (2D) th8nh solide (3D) Command: solexI (hoAc trenmenu chon MODEL> Extrljde) Select objects:· chQll daang pline va 2 duemg troD Height ofextrljde: 24 (chieu cao) Extrusion taper angle<>: 0 (g6c nang O· ) • COPY: de t~o dE thu 2 Command: copy Select objects: chi vao de thu 1 <Base point or displacement>{Multiple: CEN of (bat Him cung tron dum de) Second point of displacement: @1I2,0 (xem hlnh 2b) 141 c) Ve kh6i chu n~ trtn dE: • SOLBOX: vo kh6i Mp Command: solbox (ho~ MODEL> prinfttives>box ) Baseplane/Center/<Comer of box><>: 0,0,0 Cobe/Length/<Other comer.>: L (cho chi~u dhl ~) Length: 160 (huang x) . Width: 30 (huang y) Height: 80 (huang z) (hinh 2c) • SOLCYL: vo riinh tf\l trtn kh6i h~p vim vo Command: soleyl (ho~c MODEL>primitives>cilynder) Baseplase EllipticaV<Center point><>: B (cho m~t phAng co sO day lf1:1 ZX) Baseplane by Entity(Last/ fXY {Yza;xJ<3 point>: ZX Point on ZX plane<O,O,O>: .J (cho 1 diem t tn ZX I. g6c 0,0,0) Baseplase Elliptical/<Center point><>: MID of (bilt diem giiia c'!fib trtn - tnli cua kh6i h~p lam tam day If\l) Diameter/<Radius>: 40 Center of other endl<Height>: 30 (chieu dhllf\l) «em hinh 2c) • MOVE: di chuyen kh6i h~p vi. kh6i If\l vim vo len trtn 2 de Command: move Select objects: (chi vao cae kh6i ciin di chuy~n) Base point or displacement: MID of (bAt diem giiia c'!fib ngAn ben tnii dum kh6i Mp) Second point,of displacement: MID of (bAt men\ giiia cua c'!fib trtn de ben tnii) «em hinh 2d) d) T(JO thank .oUd 4a h'!P : • sOLSUB: .~ trlI clio kIl6i tao thAnh 10, rinh Command:" ~ ~M~t) SOurce ob~i.{\~·< " ,'." '-~~"-<;,',., -' "~' :,- '. • Select objeCls:' (#~#c kblltbjtrikll:" &::"kh6i~tien de) Objects to subtlactftrii'n,ihem · ' -''':''. .' . Select objects: . (chi"Wo "'" kh6i trlIll i«t ciSkb6i If\l) Bay gill ta dli ci\v~t th~ 3D . . 2. T~o 4 khuDg cw s6 hlnh chilo • TILEMODE: d~t lil 0 (off) chuy~ _ khOll8 gian gi~y (PSPACE). • LIMITS: d*t gim hlpl VO A4(297 ,2')0)vlll~nh ZOOM/all duo ra man hinh. • LINETYPE: chQn L: ill duilng hidden, center vlo ban vi!. • MVIEW: t~o 4 khung clm sO hinh chi':u Command: mview (ho~c VIEW>Mview>4) ON/OFF/Hideplot/Fit/2/3/4/ ./<First point>: 4 Fit/<First point>: F (4 khung clm sO vira khit man hinh) • MSPACE: chuyen ve khOng gian mO hinh. • VPOINT: de chQn diem nhin t tn timg khung clm sO hinh chiEu bang, hinh chi€u dang. hinh chi':u c'!fib. TnIOc Mt kich con 1r0 v'o clm sO hinh chi':u bAng : Command: vpoint (ho~c VIEW>setview>view point) Rotate/<View poio!>: 0,0,1 Chu j: nfu hinh chie bdng celn xDay, b~n dungl¢nh ROTATE. Bay gio b',m nch chu¢t vao Clla ·s6 hinh chleu dUng (ho~c hlnh chieu qmh) va lam tuong W de cho diem nhln hlnh chiou dUng (ho¥: hlnh chiou.c;mll). • ZOOM: cho ty I¢ b~g nhau (1,2) dtl chioh dQ IOn tren tUng hinh chi€u. Command: zoom All/Center/ /wiodows/<Scale(X/xp»: 1,2 • MVSETUP chon A: chinh vi trf gi6ng dUng (V), gi6ng ngang(H) giila cac hlnh chieu: Command: mvsetup Align/Create/Scale viewports/ /Undo: A (cm chinh) Angle/Horizontal/Vertical alignmentl /Undo? V (chinh dUng) Base point: kieh ehuQt vao hlnh ehieu dling va go END of (bat dinh tnii tren eua hlnh ehieu dUng lam di~m eel sa) Other point: kich ehuQt vao hinh ehieu bang va go END of (Mt dioh a hlnh chiou b~g tuang Ung chinh dUng vm diem co sa) Angle/Horizontal/Vertical alignmentl /Undo? H (chiohngang) Base point: kich ehu¢t vao hlnh ehieu dUng va go END " of (bilt dinh trai tren cua hlnh chiou dUng lam diem co so) .' Other point: Dch chu¢t vllo hlnh chiou c;mll v~ go END of (bAt dinh i:J hlnh chiou c;mll lUang Ung) Angle/Heriwntal/Vertical alignmentl /Undo? .J AJign/Create/Scaie viewports/ /Undo: .J Kot qua ta duqc cae hioh crueu nhu tren hlnh 3. IDnh3 143 3. Hoan chinh hlnh chieu tr':lc do Kfch con tro vao cUa sO hlnh chi~u t:n,J.c do. • VPLAYER chQn N,T: ~o lap mOi(N) ten la TDO va lam tan (T) lap nay. Command: vplayer. ?/FreezefThaw!Reset!Newfrz{Vpvisdflt: N New viewport frozen layer narne(s): TOO ?/Freeze!Thaw!Reset!Newfrz/Vpvisdflt: T Layer(s) to thaw: TOO All/Select/<Current>: ,J ?/FreezefThaw!Reset!Newfrz{Vpvisdflt: ,J • LAYER chQn S: dua lap TOO ra hi~ thm (current). • SOLPROF: di6u khien hi~ imh v~t tit<! 3D chi c6 cac duimg bao vien. Command: solprof (ho~c MODEL>Display>profile solids) Select objects: chQn v~t the 3D select objects: .J Display hidden profile lines on separate layer?<Y>: .J (hi¢n ca.c dUCmg bao .\dlua:t tr~n lap ri~ng kh6ng ?) Project pro(t.le lines on to a plane?<Y>: .J (cac duiJng bao d!).t tren 1 m/phiing) Delete tangential edges?<Y>: .J (x6a cac qtnh tiep xuc tren cac m~t?) • LAYER chQn?: xem ten lap duimg khu~t iJ hlnh chi~u tfl!c do (vi du: PH-CIE) • VPLAYER chQn F: Jam dOng 2 lap: 3D va PH-CIE. Hlnh chiEu truc do chi con cac duong bao tha:y Command: vplayer ?/Freeze!Thaw!Reset!Newfrz{Vpvisdflt: F New viewport frozen layer name(s): 3D, PH-CIE All/Select/<Current>: ,J ?/Freeze!Thaw!Reset!Newfrz{Vpvisdflt: ,J • UCS chQn V: chuyenh¢ UCS rOi vi ill co (XY) song song vOi man hlnh d<! hi¢u crunh hlnh chieu tfl:lc do. • Dung eae l~nh hi~u chinh: + EXPLODE: phan ra kh6i v~t the 3D del hieu chinh. + PEDlT: ddi be r<lng net (width) la 0.5 • UCS chQn P: chuyin ues ve vi tdCll. 4. HOlm chlnh hlnh chieu dUng (HCI) Kich con tro vao ciia sO hinh chi·eu dUng. • VPLAYER ch9Jl N,T: M tao lap mOi(N) ten I. HCI va lam tan (I) lap nay. • LAYER chQn S: duo lap mOi HCI ra hi¢n thm. • SOLPROF: dieu khiin hi¢n anh hlnh chieu dUng chi Co cac duimg bao vien. • VPLA YER ch9Jl F: Jam dOng lap 3D. Hlnh chi~u dUng cO cae duimg bao ~y va khMt. • UCS chQn V: chuyen he UCS rOi vi Iri co (XY) song song vOi man h1Ph de hieu chinh hlnh chiEu dUng. • Dung cac I~nh bi~u cblnb: + EXPLODE: phlln ra kh6i V~I Ihe 3D de hieu chinh hlnh chieu dUng. 144 + ve th~m duang tI1;lc, ghi kich thuOc + PEDIT: dO; b<! cQng net (width) I. 0.5 • UCS chQn P: chuycin UCS v~ vi tri cu. 5. Hoan chinh hlnh chieu bang (HC2) Kfch con teo vao clla s6 hinh chieu bAng. • VPLAYER chQn N, T: ~o lapmm c6 ten HC2 va lam tan lap nay. • LAYER chQn S: dua lap HC2 ca hi~n thm. * SOLPROF: dieu khien hi~n imh hinh chieu bang chi c6 cac duang bao vien. • VPLAYER chQn F: lam dOng 3D. '" UCS chQn V: chuyen h~ ues too vi tei c6 (XY) song song vOO man hinh de hi~u chinh hInh chi~u ba.ng. * Dung cac l~nh hi~u chinh : + EXPLODE: phan ca kh6i v~t tM 3D d6 hi¢u chinh hlnh chieu biing. + ve tn,Ic, ghi kich thuOC + PEDIT: dOi b<! cQng net (width) la 0.5 '" UCS chQn P: chuyen ues ve vi tei cu. 6. Hoan chinh hlnh chieu c~nh De hoan chinh hlnh chi!!u qlllh b(llliam tuong "! hoRn chinh hlnh chieu dUng. 7. Hoan cbioh toan .b~ ban ve • LAYER chQn F: liIm dOng lap 3D de! bO cac khung cua cac cira sO va hi~n l~i chi cac hlnh c.bill> thoi. . • PIH'ACE: chuy6n sang khOng gian gi4y;phAng M v~ themk,hung bOn v~. khung len va viet -chu de c6 bim ve hoan chinh. Cu6i cDng ta c6 ban vo GIA 00 nhu hlnh I: '. '~ BAIT~P17 '.' . " -" "'~. ,., j' 4p bio.n vO chi tiet TAM 00 nhu hlnh I dum day. Sauclaylnt6ngd!nl c4Clrvo 1. V~ v~t th~ 3D a) Chutin hi lnin v'khOi thdy: .' .:. • OPEN: l¢nh rna bio.n vo khlli thuy (vi d'l' A4.dWl!),;,Mfu d1ua \:6,thl'''I0 mOl • VPOINT: cho ,Mm nhln (I I.I)M quan sat8nh ""illl!\'3D ~g hlnh chieu tn)c dovuOngg6cMu.i, "::" . Command: vpoint ; , ": ::f' Rotate/<View point>: 1,-1,1·, • LAYER chQn M: de! t~o lap mm ten 11l3D va dua ra hi~n·thm. Command: . layer ?/Make/Set/New/ON/OFF/ /Unlock: M . ""l. , - - I ~ D' - '& , , , B , (,4. ngang v~o I1lm 0 cung tron cira s6;' mob 1 - l~nh DIVIDE chia dO(lIl AB (c~nh trong thing dUng) fa 3 ph4n; - l~nh. 2) - l¢nh VPOINT vm ditmnhln 1,-I,l)h<$:DVlEW Mc6inlin6i5D; - I~nh CHANGEJthicknCs, chi~u . day khung ngoa; = 6, chi6u dAy d6 = 4;. - l~nh SOLIDIFY chuyen thAnh solid; -. &apos ;-/ • Hlnhl 8. TaO m~t dlt qua tam 2 16 cUa go - I~nh UCS, dlri M ues tm g6c mm 1A tam duimg trOn day dUm 10 In!; - l¢nh soisect, chQn m~t elit HI. (YZ); - l¢nh