toan mang la 160 0 va trong khi sao khong quay d6i hlqng, va hlnh sau co quay doi lUqng (hlnh 3-12). Hlnh goc Sao mang kh6ng xoay Hinb 3-12 - Sao m<'mg :(Oay 1 goc 3.4. Hl~U CRiNR V A TRAY DOl FILLET 4nh nay de ve m9t cung tron noi tiep giua d.c do~n thfing hay cac duang tron. * each g9i l¢nh FILLET tll Menu: , , Screen Menu> EDIT> Pillet Menu Bar> CONSTRUcr > Fillet * Go l¢nh tir b~ln phfm: Command: fillet Polyline/Radius/<Select first object>: Tnilai dOng nhiic nay co 3 truang h<JP: . + OlQn R: nghia la b<;ln se cho ban kinh cung tron noi tiep cfin ve, ACAD se nhiic tiep: Enter fillet radius: <cho gia tri ban kinh cung noi titp> Gia tr, ban kfnh cung noi titp do se du<JC giu mai cho toi khi b~n cho gia tr! moi. B<;tn co the cho ban kfnh cung noi tiep bang vi¢c cho 2 diem. + ChQn P: nghia la b<;ln muon ve noi tiep dc phan do<:,n clla Polyline bili cae cung tron co cung oo.n kfnh. Neu pha.n dO<;ln nao la cung tron thl se duQ'c thay bang mQt cung tron- co oo.n kinh bang ban kinh cung noi tiep, xem hlnh 3-13. . I 1- I I I I I -'- I ) • a.Hinh,g6c b. Sau Fillet-P Hioh 3-11 + N6i ti€p 2 duimg: B~n dap dong nhk tren bang vi¢c chi vao 2 duang can noi tiep, ho~c 2 phAn dO<;ln eua 1 polyline, thi ACAD se ve 1 cung tron noi tiep v6i ehling. Chli y rang cae diem b<;ln chi ra a tren cae duang se la cac tiep di~m. 34 IDnh 3-14 minh hQa di~u do: • • " • Jl ,0 .,. • • '\.J '\ J" E " E E II U .,. 'U 'U .,. ~. .,. Hinh 3-14. CHAMFER L~nh nay de ve duemg vat nghi~ng giil'a 2 dllOng th~ng da cho. '" each gQi l~nh CHAMFER tir Menu: Screen Menu> EDIT> Cbamfer Menu Bar > CONS'IRUCf > Chamfer '" Go l¢nh tir ban phim: Command: chamfer PolylineiDistance/<Select tiest line>: + Trlt. lai D: Djnh nghia do'.l" vat cho 2 dllemg tha.ng, vi dl:l nhu sau (hloh 3-15): Enter first chamfer distance< >: 6 <cho khoang vat tha 1> Enter second chamfer distance< >: 10 <cho khoang vat thu 2> Command: chamfer Polyline/Distance/<Select fiest object>: PI Select second object: P2 Ke"t qua chamfer trong vi d1,l chi ra tren hlnh 3-15. Hlnh glk P2 P' P Pl Chi v!lo cae e~h di V<it Hinh 3-15. <chi vao dUOng 1 > <chi vao duemg 2> K!t qua. 35 Tni loi P: de vat cho m~t da tuy~n Polyline. Truimg hqp nay gi6ng nhu l¢nh FILLET. Chu y: Neu bl,m Ilfy cll) dai vat bflng 0 (mij.C djnh), thll¢nh nay co laC dl,1ng keo doli cae duemg th&ng cho g~p nhau Wi I diem coo, xem hinh 3-16. OFFSET 4nh nay dung d~ t'.l-O ra m~t duemg moi song song voi duemg th~ng da co, hay vi "11,1 v6i m¢t dUOng cong, mQt Polyline cho truOe va each duemg cO mOt dO<;ln tuy y. * Cach g<;>i l~nh OFFSET til Menu: \ , , Screen Menu> EDIT> Offset Menu Bar > CONSTIWcr > Offset * G6 l~nh til ban phim: Command: offset Hinh3-16 Offset distance or through< >: <cho khoang each, hay cho 1 dil!m offset toi: through> 36 + Neu cho khoang cach b<;ln tiep tl,lc tra loi: Select object to offset: <ch<;>n d6i tuqng offset bang chi diim> Side to offset: <ch<;>n diem beft ky ve phfa hlnh thanh duemg m6i> + Neu ch<;>n Through: Through point: <cho diem rna duemg m6i di qua> Vi d1,l sau day mo tii qua tdnh offset mOt duemg Polyline, hlnh 3-17.* DIVIDE Hinh g6c DIVIDE - X P2 Pl . . . 0l9n cl6i tuqng Offset Clio .diim rnA dutmg rnm di q~ Hinh 3-17 L¢nh nay chia dO':1n duemg thanh cac phfin bang nhau. * Cach g<;>i l¢nh DIVIDE-til Menu: e- , Screen Menu> EDIT> Divide , Menu Bar > CONSlRUcr > Divide * G6 l¢nh tir ban phim: Command: divide P2 Pl K€t qua Select object to divide: <Number of segments>/Block: <ch<;>n d6i tuqng bang chi diim> <cho sQ do<:tn chia> + Nt'!u b<.1.fi tni Uri B: Truang hqp nay b<:tn da d~nh nghia cac kh6i (BLOCK) vi d~ nhll: DIEM, DOAN, VUONG, v.v rna muOn chen block vao cac diem chia;khi d6ACAD nhac nha tiep: Block name to insert: <go ten Block vao> Align block with object <V>: <sap Block g6m cac diem chia tren d6i tuqng YIN> Number of segments: <cho s6 do~ chia> Ch6 y: Sau khi dung I¢nh DIVIDE rna bl.lH kMng nhin th!lY cae Jh';m chia, tlic \a bI~ rt>ng diem ehia de rnl}e d!nh (0), n6 bang hay nho ho'Il ~ r(lng dut'mg net viS. B':ln dn x;k dinh I~i hlnh d~ng. kich thuOc diem boi I?nh POINT. CHANGE DUng l¢nh CHANGE b~ co the thay d6i cac Hnh cha:t sau day clla d6i t\:Jqng ve: - Mall sac - Kieuduang - D¢ nang len clla Polyline, hay d¢ day net Polyline 3D - Ldp ve vv • each g9i I~nh CHANGE til Menu: * Go l¢nh til ban phim: Screen Menu> EDIT> Change Menu Bar > MODIFY > Change Command: change Select Object: <eh<;m d6i tlll;mg dn thay d6i> Properties/<Change point>: <dap P, ho~c cho diem> + ChQn P: B<:tn se thay d6i dllqt: d~ tinh vI! ma.u sac, d¢ cao, lap ve, lo;~i dllang net ella d6i tllqng ve, ACAD se nhac nh6 ti€p de b<.m chQn: OJ.ange what property(ColorlElev/Layer/L'IypefThicness)7: Chli y: N~u bl!Jl deli ki~u dut'mg rna ehua thllY hi?n ra, hiiy g9i I?nh LTSCALE de tiing hay giam tY I? Neu b~n vao diem (] dong nh~e tren kia: ACAD eoi ditm d6 la diem de thay d6i vi tri cAe d6i tm;mg ve nhu: line, circle, text, block, attribute. TOe dl,mg Lhay d6i vOi timg d6i tuqng ve sau khi cho diem CP 18 nhu~: - Line; thi. dAu m'l1t eua dlti'alg .thing: g4n 4i~ CP siS chuyin ten CP. ., . - Circle: blin k{n!l ",brig tron'dii c,hqn Se'tluly d6i sao cho wng tron m6i di qua dibn 'CP' Yia sift· nguyen lAm eu. - lext: diem CP se I~ vi tn mOi, ~u ban AD Enter thl ACAD eho bl,Ul thay ·dOi duqc kifuch\t, dQ eao, g6c xoay, n(li dung Text. - Attribute: b~n eling c6 the thay d6i duqc Attribute gi6ng nhu Text. - Block: ditm CP trd thanh vi tn mm cua Block, ~n Enter tiep thl b~n c6 tM thay d6i duqt: g6e xoay ella Block. Chli thkh: CO th~ thay d6i nhi~u durmg. Vi dl;l khi eho CP thl cae dUCmg thang khac nhau se W Il.Ii t~i diem CPd6, xem hlnh 3-18. a ffinh g6c , a b Sau Qlangc-CP Hinh 3-18 37 Chu thleh: ACADl2 con e6 l~nh DDCH- PROP de bi.1n lhay d6i de d~e tinh ella d6i luqng qUH hQp tho,!-i nhl1 hlnh 3- 19 . DDEDIT (Dynamic Dialogue Edit) L¢nh nay de thay d6i n(:li dung dong ky ~.""""'V<A""' ''' u;- . =t. I ,~ •. I BYU""~ '<"""''''000," H,t (Text) va thu(>c tfnh (Attribute) da co. * Crich gQi l~nh DDEDIT Itt Menu: '"'<" "" [,_ ") ~ r- ",.", I iJJ!!W I Screen Menu> EDIT> DDedit I * Go J¢nh tir ban phim: Command: ddedil Hlnh 3-19: HOp Iho<l.i ACAD 12. l¢nh DDCHPROP eua <SeJect a TEXT or ATIDEF object >/Undo: B<.ln Ira Jbi TEXT hay ATTDEF thl I troug 2 h(>p thof.l.i sau day hi¢n ra, hinh 3-20a,b: Edit AtllilJule Dehn~lan CI Edit Text T." 1m Text lB. Prompt ~~H~U~O:;:CT"'N::7H;====== = ==~ Defnult: Lit 9,,'' ' , =:;:;==, :; ,, _ _ __ ' IJD I cencell OK Cllncel I Hlnh 3-20a: H{)p tho,!-i "Edil Text". H"lnh 3-20h: H{)p Ihm.li "Edit Alllibutc Ddinition". PEDIT (Polyline Edit) L¢nh nay co the hi¢u chinh da luyen (Polyline). * each gQi I~nh PEDIT ttT Menu: , , * Go I¢nh tit b~m phim: Screen Menu> EDIT> Pedit Menu Bar > MODTFY > Pedit Command: pedit Select polyline: <ChQIl Polyline dn hi¢u chinh> C losel J oi n/Wid Ih/Ed i I V erlex/Fi liS p lin el Deell vel LtypeGen/Undo/eXik. >: Tr~n dong nhac nay Close duqc thay bang Open neu Polyline dang dong kin. cac chuc nang do co y nghla nhu sau: + C: dong kin da tuyen dang ha; + 0: xoa phein do~n cu6i clmg cua Polyline d~ rna da tuyen; + J : dlta cae cung tron, dO<;ln lhang ho~c m(>t Polyline khac nh~p van vai Polyline co InJoC; + W: de lhay deli be r(lng net ve coa Polyline; + F: sua dtremg Polyline da co thanh dUO'ng cong tran dtiu di qua cae dinh cua Polyline do. B,,11 co the d~t taroc huong tiep tuy6n t<;ti 1 dlnh, thl dLTOng cong t<;to thanh se tiep nh~n IUiong tiep tuyen d6. 38 . + S: st'ta Polyline thanh duemg cong trem c6 the dieu khitn dugc til cac dinh clla Polyline nhl1 la cac di~m khung. B"lO chi ra cang nhieu di~m dinh v~ thi. dUCmg cong cang nhan hem. ffinh dl16'i dAy chi fa S,! khac nhau clla dUCmg cong hi.nh thanh do Fit va do Spline, hlnh 3-21: CO thi t<;to thanh dl1emg eong Spline b~c 2 hay b~e 3. cae bien h¢ th6ng dung d~ dieu khien hlnh d~ng duimg Spline la SPLINETYPE. N€u d~! bien SplineType nay b~ng 5 thl Spline t<;to thanh la b~e 2; eon d~t bien gia tri 6 thi Spline sf: e6 b~c 3. Bien h¢ th6ng SPLINESEGS xac dinh so dO<;tn tMng dung d~ ve thanh duemg Spline, s6 cang Urn thl Spline cang m~n (gia tr. m~ dinh la '8). Bien SPLFRAME d~t gia tri m~e dinh 0 thi. kh6ng xuat hi¢n dUCmg khung Polyline; neu la:y gia tri 1 thi khung sf: hi~n ra eung v6i duemg Spline, xem h'inh 3-21. ffinh g6c Fit Spline b~c 2 Spline b~c 3 Blnh 3·21· + D: de dua cae duemg cong sau khi Fit hay Spline tn1 ve d<;tng ban d~u, d6ng thai lam th~g tat d. d.e phAn dO<;tn c~a Polyline. + L: v6il,!a chQn nay d~t la ON(1) th'i lo~i duemg net hi¢n thai se eh<;ty deu d~n tren phAn do<;tn cua Polyline; con neu d~t OFF(O) th'i net g~ch dai se du<;1C bat da.u va ket thue t~i tUng dinh cae phan do~n. sau dAy la s,! khac nhau clla m¢t Polyline ve b~ng net ehilm g~ch(Dashdot) trong 2 trltimg hqp do, hlnh 3-22. ,. - ,. - .I \ t' , r· J L , { , 1",_.1 1._ . ., . . . . 1 1 l._._ . . _._.J '-'-'-' ._ Blnb 3-22 + U: huy b6 thao tAc I~nh vila th'iC hi~n. + X: k€t thuc l~nh PEDIT. _ + E: hi¢u ehinh tren cac dinh eua Polyline. Khi chQn "E" ACAD danh dau "x" qi dinh dau tien eua Polyline. Neu b<;tn xac dinh them huang ti~p tuyen eho dinh nay thi se xuat hi¢n 1 miIi ten theo hudng d6. B<;t.n can tra lai dong nh~c sau khi ehQn "E": 39 NextiPreviouslBreaklinsertiMove/RegenlSlraighlenl TangentIWilh/eXil<N>: Ok h!a chQn d6 co y nghia nhu sau: - N va P: de di chuyen di~m danh da':u "x" tm dinh k€ sau (Next) hay t6'i dinh truac d6 (Previous). - B(break): de x6a do~ giila 2 dinh danh dau "x". ACAD ghi nha dinh danh dfu "x" thu 1 va nhac nha tiep: NextlPrevious/Go/eXit<N>: <chQn N hay P de chuyen dau "x" tdi dlnh thll 2> Tiep theo b~ go "0" de x6a do~ gifra 2 dinh danh dAu "x". Con neu b~n chQn "X" se ket thue Break de trb ve chuc nang Edit Vertex. - reinsert): dtS' chen them dinh m6i vao Polyline, ACAD nhac nha tiep: Enter new location of new vertex: <cho diem> Sau khi cho diem vao, ACAD ve Polyline co th~m dinh nua, hinh3-23. I I J , Diem CU .' X I Diem moi .2 I I I J Hlnh3-23 - M(move): dOl dinh da danh da'u t6i ehb khac. - S(straighten): de thay the cae ph1n dO'.ln nam giiia 2 dinh da danh da'u bang m¢t dO'.ln thing, hinh 3-24. Hinh g6c Danh d!u 2 dinh PI, P2 Hinb 3·24 Ktt qua - T(tanggent); chi ra hl1<mg tiep tuy~n 4.i dinh dang danh d5u de thl!C hi¢n chuc nang Fit, sau do dap dong nh~c: Direction of tangent: <cho g6c xac d!nh hl100g ti~p tuyen> - W(width): thay be r(mg pha.n dOi,ln Clla Polyline a ngay sau dinh danh d5u "x" - R(regent): thiet l~p li,li Polyline va c~p nh~t cac thay d6i, thl1Cmg dung sau Width. - X(eXit): thoat khoi chuc nang Edityertex d~ tro ve PEDIT. 40 ehU y: Nt!"u b~ ch9n dOl).n thiing hay cung tron khOng dugc 'Ie bCri I¢nh Polyline, ACAD siS nh.k Entity selected is not a polyline. <h"inh dii ch9n khOng phai polyline> Do you want it to tum into one?<Y>: <~ mu6n n6 tra thanh Polylin·e khoogYfN '1> • HIEU CHiNH DUNG KIj:P GRIP Khi nao tren man hlnh xuA"t hi¢n () vu{)ng nhb(Pick bOx) t i giao di~m clla 2 sqi )c(Cross hair), b n co th~ ch(;m d6i U1l11lg ve de hi¢u chinh bllng k~p GRIP. Sau khi chQn 6i tugng bang d.ch nhay vao d6i tl1Q'11g, cac 6 vu6ng nho mau xua't hi¢n tren cac diem d~c i¢t cua d6ituqng (blnh 3-25). • o H"inb 3-25 Sau d6 b n chi con tro vao m¢t () vu{)ng Grip d dinh dn hi¢u chinh r6i an phfm pick :hu¢t, 6 vu6ng do se d6i mau khac va ACAD xem di~m d61a di~m cd sa d~ hi¢u chinh. Cac :n tOng hqp hi~u chinh v6"i GRIP g6m: + STRETCH mode: d~ keo dan tir diem cd sa da ch(;m tm di~m khac. B n a'n pblm Pick vao m¢t 6 v\i6ng Grip lam diem C.d sa, sau do ACAD dua ra dong nh~c nhu sau: ** STRETCH ** <Stretch to point>/Base point/Copy(Undo/eXit: Nc!u b n cho 1 di~m a m¢t V! tri mm, d6i tU(]ng ve da chQn.se duqc keo rit tir diem Cd sa tai diem mai do (hinh 3-26). Chon B(Base) do! xac dinh diEm co sa khk Chon C(Copy) d~ sao chep d6i tUl1Ilg. I I I I Hlnh 3.16 I P2 I + MOVE mode: M dap l i dong nhac ** STRETCH ** b~ go "Mf> se xuftt hi¢n dong ,nh:ic MOVE Mode: . ** MOVE*'" , <Move to point>/Base point/Copy/Undo/eXit: <cho diem dfch Wi> + ROTATE mode: b n go "RO" dap do~g nhac" ** STRETCH **" se co dong nhac d6i voi ROTATE mode nhu sau: 4 . thay bang mQt cung tron- co oo.n kinh bang ban kinh cung noi tiep, xem hlnh 3-1 3. . I 1- I I I I I -& apos ;- I ) • a.Hinh,g6c b. Sau Fillet-P Hioh 3-1 1 + N6i ti€p 2 duimg: B~n. trltimg hqp do, hlnh 3-2 2. ,. - ,. - .I t' , r· J L , { , 1",_.1 1._ . ., . . . . 1 1 l._._ . . _._.J &apos ;-& apos ;-& apos ;-& apos; ._ Blnb 3-2 2 + U: huy b6 thao. xem hlnh 3-1 8. a ffinh g6c , a b Sau Qlangc-CP Hinh 3-1 8 37 Chu thleh: ACADl2 con e6 l~nh DDCH- PROP de bi.1n lhay d6i de d~e tinh ella d6i luqng qUH hQp tho,!-i nhl1