Thu Thuat Cad

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Khi bn c mt bn v cu to ca mt chi tit, thit b, nhng khng c cc thng s kch thc, do , bn s mt nhiu thi gian v li bn v . C mt cch nhanh hn bn v li cc bn v ny, trnh t lm nh sau:

u tin bn mang bn v gc ln my qut (scanner) thnh file hnh nh, lu tp tin v chn nh dng l JPG (nu bn chn nh dng file l BMP th khi chn vo, mu sc ca cc ng nt s ging nh mu sc ca lp (layer) m bn chn hnh. Nu bn v c kh ln, bn c th photo thu nh v kh A3, A4 c th a ln my qut.

Tip theo, bn chn hnh nh vo bn v bng cch vo InsertRaster Image... sau la chn bn v cn v chn vo. Th l lc ny bn c mt mu nn, ch cn v t theo bn v nn, hiu chnh li cho ph hp. Sau khi v xong, bn tt layer cha bn v gc, hon tt bn v.

Cc thao tc, lu khi thc hin:

Hnh v gc c chn vo

V theo ng nt bn v gc

Tt layer cha bn v gc, hon tt bn v

+ Khi bn scan hnh nh c th b lch, lc ny bn cn xoay bn v gc cho thng bng lnh rotate (ro). Bn cn v mt trc tm chun thng ng (F8), sau v thm mt trc tm theo bn v gc, dng ty chn Reference quay cho tm bn v gc trng khp vi ng tm chun: g lnh "ro", chn bn v gc, chn tm quay l im giao nhau ca hai trc tm, g "r" la ty chn Reference, click vo hai im trn ng tm ca bn v gc, ko n v tr trng vi ng tm chun.

+ Trong qu trnh v trnh vic s lm di chuyn hnh gc lch khi v tr ban u, bn cn kha hnh gc bng cch kha layer cha hnh gc li v iu chnh nh sau: vo ModifyObjectImageFrame sau g "off" (nu l AutoCad 2006 th chn "0"), sau ny nu cn thay i th bn lm tng t v g lnh "on" (nu l AutoCad 2006 th chn "1").

+ Trong qu trnh v, khi bn phng to, thu nh (zoom), ko r mn hnh v (pan) th hnh gc s khng hin th do bn kh c th qun l, theo di. hnh gc lun hin trn mn hnh bn cn hiu chnh nh sau: Vo ToolOptions. Ti tab Display, bn nh du chn Pan and zoom with raster & OLE. Lc ny khi bn phng to, thu nh th hnh gc vn hin th trn mn hnh ch khng n i.

+ Khi chn hnh gc vo bn cn phng to hnh ln cho ph hp, nu bn qu nh th s gp kh khn trong lc v do n v phn chia lc ny qu b, khi bn v cc ng cong th khi hin th c lc n s gy khc, bn dng lnh redraw (re) n s trn li, tuy nhin nu bn phng to s d v hn.

+ Khi bn phng to ln th ng nt ca bn v gc cng s to ln, do bn s v theo bng cch chn khong gia ung nt ca bn v gc l ph hp nht.

+ Khi bn chn hnh vo, AutoCad ch nhn din lin kt (link) n bn v gc ch khng chn hnh vo bn v. Do , khi chp sang my khc, th mc khc hiu chnh, sa cha th bn cn chp c hnh gc theo.

Mt s cch chn i tng trong CAD1. Chn i tng bng pick chut 2. Chn i tng nm trong ca s chn bng cch pick chut t tri qua phi mn hnh (windows) hoc dng tham s W3. Chn i tng nm trong v trng vi ca s chn bng cch pick chut t phi qua tri mn hnh (crossing) hoc dng tham s C4. Chn tt c cc i tng: dng Ctrl+A5. Chn i tng theo ng zigzag tu : dng tham s F6. Chn i tng nm trong ca s a gic tu : dng tham s WP7. Chn i tng nm trng v trong ca s a gic tu : dng tham s CP8. Chn i tng c v cui cng: dng tham s L9. Chn i tng chn trc: dng tham s P10. Gi Ctrl bt i tng (Object Cycling)Trong lc v nhiu khi c nhng i tng ln nhau. Bn c th chn ln lt chng bng cch gi Ctrl ri pick chut vo ch c nhiu i tng ln nhau. lc CAD s bt ch Cycle on. Khi bn c th b Ctrl ri pick chut bt k ch no trn mn hnh. Cc i tng ln lt s c chn. Khi chn c i tng cn chn bn phi chut hoc enter kt thc lnh.11. Chn thm v b chn i tng: Dng Shift l thun tin nht, hoc dng tham s A add thm i tng, tham s R b bt i tng chn12. Chn i tng bng Quick Select: Tool>Quick Select13. Chn i tng theo bng Filter (lc i tng) tham s Fi.12 v 13 dng nhng c im nhn dng chung chn i tng. Nu dng quen s thy rt hu ch

Cch chn i tng bng lnh FI ( Filter )V d trong 1 bn v c rt nhiu loi i tng nh lnh FI.Trong khung Selection Filter. Chn Circle/ And to List / Apply Quay li ca s chnh ca CAD, ta chn tt c cc i tng trong bn v/Ok. Gi th FI lc ra ch selec cc CIRCLE trn bn v thi !

Ging lnh filter, nhng c bit hn: Bn cn phi nht ra trong bn v nhng i tng text c cha mt cm t nht nh, lm th no?Hy dng lnh find c bn ca AutoCAD, cch dng:- Gi lnh find ti dng lnh.- Ti bng lnh, g dng ch cn tm ti phn text find string.- Ti phn search in, click vo phm c biu tng hnh vung v con tr chut chn cc i tng.- Cad s quay tr li mn hnh chnh bn chn i tng. y bn g All chn tt c cc i tng trong bn v. G xong th g enter.- Tr li bng lnh Find and Replace, bn s thy phm Select All c t mu en (trc n c mu xm - disable). Hy click vo phm Select All ny.- Cad s ng bng lnh v cc i tng cha dng ch cn tm s c la chn (high light). Cng vi dng ch trn ca s text: "AutoCAD found and selected xxx objects that contain yyy" vi xxx l s i tng c chn v yyy l cm t bn va nhp. Nu khng c i tng no tho mn, cad s thng bo:"AutoCAD found and selected 0 objects that contain yyy".-----M rng sang lnh vc khc 1 cht.Vi Architectural Desktop 6-7:Vi iu kin l khng tt chc nng chut phi (mi ngi quen dng chut phi thay phm Enter nn a s tt b chc nng rt hay ca chut phi, nu khng tt s hin menu rt c ch).Khi chn 1 hoc 2 hoc mt s i tng lm mu: chut phi s hin dng Similar selection. Chn dng ny s select cc i tng ging hoc gn ging vi cc i tng ta chn lm mu.Chut phi c bit hu ch i vi ADT khi iu chnh cc i tng. V gn nh l tt c cc ty chn hiu chnh i tng u nm trn menu chut phi.

Trim and ExtendHai lnh ny c mt s iu c bn nhng kh th v, khng bit mi ngi bit cha?- Khi dng lnh trim, chn i tng cht xong, n lc chn i tng cn cht, nhn phm Shift s tr thnh lnh extend. v ngc li. Tht ra, AutoCAD hng dn rt k: Select object to trim or shift-select to extend nhng khng my ai .- Dng tham s f (fence) lc dng lnh hi object to trim/extend s cht/dui c nhiu i tng cng mt lc.

Ngoi phim F nu mun bit c nhng cch la chn j khc na th th n lnh move , sau n mt lot k t cho li , n hin ra ht VD: move _ Enteraaaaa_enter (Su tm)/... kt qu hin ra cc cch la chnTrong trng hp bin extend b ngn, ng cn extend phi ra ngoi bin c th tham s ny cng tit kim c thi gianLnh Trim cng hon ton tng t, cc bn cng c th dng tham s e dng ng ny ct ng kia mc d chng khng giao nhau.Mo chn i tngBn ang cn chn mt i tng nm pha di mt i tng khc, bn lm nh th no? c mt cch rt n gin: khi chn bn nhn thm ctr, pick 1 ln nu trng ri th thi, nu cha trng th pick thm ln na n s chn xoay vng cc i tng nm ti 1 v tr cho n lc i tng bn chn l th bn nhn phm space (enter hoc phi chut). Bn ang bt mt lc nhiu la chn osnap, v th khi bn di chut n gn i tng, thay vo bt theo cch bn mong mun, AutoCAD li chn kiu snap khng ng? bn ch cn nhn phm tab chc nng osnap s thay i xoay vng cho n kiu bn mun th thi.

Mo bt trung imBn mun ch nh mt im l trung im ca 2 im khc m khng c i tng no bt midpoint? bn s v mt line i qua 2 im v chn midpoint, sau li xa line ny i?Khng n ni phc tp nh th, khi bn mun xc nh trung im, bn ch cn nhp vo mtp hoc m2p (middle between 2 point), ACAD s hi bn 2 im u mt, th l bn c im gia.

Mo khi dng filletMt s ngi khi dng lnh fillet, ch yu dng vt hai i tng vo nhau (radius=0). Nn khi ang fillet vi mt bn knh khc, h mun bin radius v 0 th li dng tham s R ri g vo 0. Khi mun quay tr li bn knh ang lm th li lm li. khc phc iu ny, AutoCAD cho bn chc nng gi SHIFT, lnh fillet s mc nh radius=0, nh ra th bn knh fillet li tr thnh bnh thng.

Mo hatch mng hatch, pline c width dy khng che mt cc thng tin hatch, dim. Hy s dng lnh TEXTTOFRONT, lnh ny a ton b text v/hoc dim ln trc cc i tng khc. Lnh ny bt u c t ACAD2005.

Mo to blockNu bn mun to mt anonymous block (l block khng c tn) trong bn v bn ch cn copy cc i tng m bn mun to block bng cch dng t hp phm Ctr+C, sau dng lnh PasteBlock.Vi block to bng phng php ny, bn khng cn phi qun l block (tht ra l khng qun l c). Khi bn xa i tng ny, ACAD t ng Purge cc anonymous block ra khi block table sau mi ln m file.

Tham s ca ZoomMc nh, tc zoom trong AutoCAD l kh thp, trong khi b con nh ta zoom nhiu hn v. M zoom chm th kh chu. Cho nn dng lnh sau y tng tc ti a (lnh ny khng lin quan n tng tc ha ca phn cng nh )ZOOMFACTOR = 100(100 l maximum ri )T AutoCAD 2006 n 2008 c thm hiu ng, cc bn s bit mnh ang zoom t u .... nhng nu khng c tng tc ha, zoom khng mt, h h, hiu ng ny s gy cm gic kh chu V vy tt hn ht l tt bng i, tr li AutoCAD c. Cc bn dng lnh sau:VTOPTIONSTt b ht 2 dng option trn v ok l xong.

Ch s trn v ch s diMun nh Text trong Autocad m c m trn hoc di th dng lnh g?V d H2SO4

Lnh MTEXT.Bn mun dng vit ch trn u, bn cho k t m (^) vo cui.Bn mun dng vit ch di chn, bn cho k t m (^) vo u on.Sau t xanh on m bn mun vit km c k t m, ri nhn vo phm a/b trn thanh cng c mtext.

Mt s kin thc ban u v XREFXin c bt u mt chui cc bi vit c bn cng nh mi ngc ngch ca lnh Xref. Cc kin thc ny l s bin dch, tng hp t help ca AutoCAD v kinh nghim s dng CAD ca bn thn.

PHN 1: NH NGHA V NHNG KIN THC C BN.Xref: vit tt ca cm t eXternal Reference (l nh x t bn ngoi). Mt Xref l mt nh x t bn ngoi dng ch s nh x phn bn v ca mt file c ngun gc t mt file khc.AutoCAD quan nim mt Xref nh mt dng nh ngha block vi mt vi s khc bit quan trng. Khi bn chn mt file con bn v nh l mt nh x block (dng lnh ddinsert, chn browser), n c lu tr trong file bn v m v khng cp nht nhng s thay i ca file con. Khi bn nh km mt file con nh l mt xref, bn to ra mt lin kt nh x bn v con ti bn v hin hnh (bn v m), mi thay i ca bn v con u c hin th khi bn v m c m ra. Xref lun l i tng thuc model space, n c th c nh km vi bt c, t l, v tr v gc quay no.Mt bn v m c th nh x mt hoc nhiu bn v Xref con cng mt lc. V ngc li, nhiu bn v m cng c th nh x vo mt bn v Xref con. Trong mt file Xref con c th xut hin file Xref con khc, ngha l Xref ny lng trong xref kia. V d: file A nh x file B, file B nh x file C l c th xy ra. Cng ging nh mt nh x block, mt xref xut hin trong bn v m nh mt i tng n. Du vy, bn khng th explode mt xref ngoi tr bn bind (chuyn mt xref thnh mt block) n trc khi explode.

Cng c nh mt Xref vo file nh km mt xref s dng lnh XREF hin th bng qun l cc Xref hoc s dng lnh XATTACH.Bn cng c th s dng lnh DesignCenter ca AutoCAD nh km 1 file xref cng nh chn mt block vo bn v. S dng DesignCenter cho nhng file nh km n gin, c th preview c xref v cc m t v n, v nhanh -_-*ng s dng c bng cch drag chut.

Tn cc i tng cha t