LI M U- Trong s nghip cng nghip ho v hin i ho t nc, cc ngnh cng nghip k thut ng vai tr ht sc quan trng, trong ngnh cng nghip c kh l mt trong nhng ngnh gi vai tr quan trng trong nn kinh t quc dn. ng dng ca khoa hc hin i nh in t, tin hc... nng cao sn xut, cht lng v gim gi thnh sn phm l nhng yu t k thut phi gn lin vi yu t kinh t. nc ta, ngnh cng nghip sn xut v gia cng c kh ang pht trin. Dn a ra th trng nhiu sn phm phong ph v a dng, cht lng v phc tp ca sn phm ngy cng hon thin hn. my mc v thit b hin nay ngy cng c ci tin. thc hin c nhng yu cu pht trin th cng ngh thit k v ch to ra nhng sn phm cn phi c phn mm thit k m trong nhng phn mm thit k th phn mm CATIA th hin nhiu u im v kh nng vt tri ca n so vi cc phn mm khc.Nhm chng em c giao ti tiu lun CATIA l Thit k Forged steel floating ball valve. - Do kin thc cn hn ch, thiu thc t v kinh nghim thit k nn trong qu trnh thit k v tnh ton, chng em khng trnh khi nhng sai st nn chng em rt mong c s hng dn ch bo ca cc thy em c th cng c v hon thin kin thc ca mnh khi bc vo thc t sn xut trong tng lai. MC LC1

LI M U CHNG I :GII THIU V CC LNH Trang 3 I. Gii thiu phn mm CATIA. Trang 3 II. Gii thiu v nhm lnh Structure Design Trang 4 III. Tao Physical Plates & Shapes Trang 6 CHNG II : THIT K V M PHNG FORGED STEEL FLOATING BALL VALVE.. Trang 29

I. Gii thiu v nguyn l hot ng ca Forged steel floating Ball valve .. ..Trang 29 II. Thit k v m phng van bng phn mm CatiaTrang 33

CHNG I2

GII THIU V NHM LNH STRUCTURE DESIGNI. Gii thiu phn mm CATIA- CATIA c vit tt t cm t (Computer Aided Three Dimensional Interactive Application), dch c ngha trong ting vit l X l tng tc trong khng gian ba chiu c s h tr ca my tnh, Catia l mt b phn mm thng mi phc hp CAD/CAM/CAE c hng Dassault Systemes ( y l mt cng ty ca Php) pht trin v IBM l nh phn phi trn ton th gii. Catia c vit bng ngn ng lp trnh C++. Catia l vin nn tng u tin ca b phn mm qun l ton b 1 chu trnh sn phm ca hng Dassault. - Hin ti vi hn 170 modul c tch hp, p ng tt c nhu cu s dng trong tt c cc ngnh ngh nh c kh, t, hng khng, kin trc, in t, h thng ng ng...V cc modul ny c th mua ring c th ph hp vi tng ngnh ngh.- Di + Phn

y gii thiu mt s modul trong CATIA: CAD (dng thit k sn phm t n gin n phc tp)

Mechanical Design: c tch hp bao gm cc modul nh Part Desgin,Drafting,Sheet Metal, Mold Tooling...+ Phn

CAM: (bao gm cc modul v phay v tin, p dng cc phng

php phay tin tin nht) Lathe Machining, Mill Machining... Phn Analysis: bao gm cc modul v phn tch ng lc hc, phn tch kt cu, phn tch ng lc ca chi tit...

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+ CATIA ROBOTCIS: dng m phng hot ng ca cc robot sn xut, lp ghp dy chuyn trong h thng sn xut. II. Gii thiu v nhm lnh Structure Design : - Structure Design cung cp mt b cng c nh cu trc chi tit v lp rp cu trc. Nhm lnh ny thit k chi tit theo cc yu cu ca ngnh cng nghip khc nhau. c bit , n cho php bn: To cc tm phng v tm cong. , to hnh dng tuyn tnh, hnh dng un cong v hnh dng xon, Split v hp nht cc hnh dng v cc tm. Xc nh ct gim v hnh dng ct thp tm phc tp vi nhiu phn ca tm v hnh dng. - To hnh dng h tr hin ti, To hnh dng Point-to-Point, ct gim , to Tm, t ct ra, t theo ng cnh Endcuts ,t v sa i khe cm chun, sa i tm v hnh dng, - Thit k sn phm l mt ng dng cho php ch n gin v nhanh chng to ra tuyn tnh, cu trc cong, v cc tm, bng cch s dng tiu chun hoc xc nh phn ngi s dng. Tn dng li th ca mt giao din ngi dng ti u ha, ngi s dng c th d dng to v thay i cu trc thit k kt hp y trong bi cnh kh nng. Hn na, sn phm bao gm mt danh mc tham s thng qua cc bng thit k v ngi dng c th ty bin vt liu. N l nguyn bn c tch hp vi cc cc ng dng CATIA khc hon thnh vic thit k cu trc, ngi s dng s c th, v d, thc hin phn tch ng sut rng ri trn cc yu t cu trc v cc dm ca mnh. Sng to ca4

mt s dng ca ngi s dng cu trc c th xc nh mt lot cc cu trc tuyn tnh, cong v xon bng cch s dng tiu chun (I, U, L, T, hnh ch nht hoc thanh trn v ng ng phn) hoc b phn ngi dng nh ngha. Mt chc nng li trc quan m bo d dng t trong khng gian 3D, cc cu trc s dng tuyn tnh, nh hng v im ti im v tr.- Chn Mechanical Design -> Structure Design t Start menu. - Ca s Structure Design workbench hin ra

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III. Tao Physical Plates & Shapes : 1.Create plates: - Lnh plate dng tao cc tm lm ln vch ngn, sn v cc tm sn phng (phng), trong khi nhng bc tng hnh tr hoc cong, sn tuyt i v cong, v cc bc tng sng khng phng (cong) tm. C hai tm phng v khng phng c th c to ra bng cch s dng lnh ny. -Trc tin ta phi tho 1 product, click the - Lnh Plates c th c to bng cch chn 1 trong 2: + A support (both planar and non-planar plates). Plate icon

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+ A support and a contour (planar plates only).

- Trong tab Geometry : + Support : + Contour : vo sketck tao bin dng cho plate. + Offset : lin quan n dy ca vt liu . + Reverse Direction : tao hng cho plate.7

- Trong tab Material v Orientation :+ Materrial : chn vt liu nh Steel.. + Grade : cp vt liu , v d nh A42, A45, A50 + Thickness : dy ca vt liu.

- Trong tab Custom Atributes : ty chnh thuc tnh

Vi d : - Trc tin, vo trong mi trng Structure Design tao file v t tn. Xong ri dng lnh Grid tao khung dy vi cc thng s sau : - x, y, z = 100, ri nhn ok.

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- Trong hp thoi Plate, ta nhp chut vo sketch v hnh ch nht 450x490, thot ra mi trng Sketch :

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- Ta chn hnh ch nht va mi tao - Chn vt liu Steel , A50, dy 5mm - Hp thoi Geometry, chn offset l 5mm

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- Apply ri nhn ok, ta c hnh bn di:

2.Creating End Plates : - M product , click co lnh End-Plate - Hp thoi End Plate xut hin : icon.

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- Length : chiu di ca tm. - Width : b rng ca tm. - Trong tab Material chn vt liu ging nh lnh plate - Xc nh chiu di, chiu rng v dy ca tm bng cch s dngmi tn thay i cc gi tr hoc gi tr tham gia trc tip trong hp thoi.

- Chiu di v chiu rng quy nh i vi h thng trc ca hnh.V d,trong trng hp ca mt hnh dng I, chiu rng c nh ngha cng song song x-trc mt bch v chiu di dc theo song song vi trc y.

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- Chn vt liu ging nh lnh plate.- Chn kt thc ca hnh dng m bn mun t cc tm kt thc:

+ Nhn vo hnh thy xut hin mt mi tn dng xc nh theohng n.

+ o ngc hng n, click vo mi tn hoc nhn ngc hng trong hp thoi. + Bn c th iu chnh tt c cc c tnh ca tm trong hp thoi, sau nhn Apply xem trc kt qu. - Mun to cng lc nhiu End plate ging nhau bng cch la chn nhiu , n gin l ch cn Ctrl-click chn nhiu hn mt u hnh dng v c mt s End plate ging ht nhau c to ra trong mt thi gian. - Thay i hng ca cc c im n tm hoc ci khc c p dng i vi tt c cc End plate.

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V d : - Cng ging nh lnh Plate trn ta tao khung vi kch thc nh trn. - Sau chn lnh Shape : + Trong tab Geometry, ta chn Type Seclect support + Support : ta chn line nhu hnh v

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: dng chn nhiu line cng lc.

+ Sau nhn ok. + M lnh End plate, trong tab Geometry ta chn thp L sao cho sang ln nh hnh v in chiu di v chiu rng ca thp nh hnh :

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+Trong tab Material Orientation, ta nhp vt liu v thng s vo

+ Nhn vo Reverse Direction chn hng n :

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+ Nhn Apply v ok

3.Create shapes:

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- Cc lnh Shape cho php bn to ra hnh dng ca cc phn khc nhau, bao gm c hnh dng cong hoc xon. - Click the Shape - Hp thoi icon . Shape xut hin :

Th xut hin hp thoi Point Definition :

- Trong tab Geometry :18

+ Type : * Point to point : chn im u v im cui ca hnh dng mun tao. * Seclect support : chn bin dng nh ng thng hay cong.- Bn c th chnh sa cc thuc tnh hnh dng v v tr. Bn c th thay i phng php c s dng t mt hnh dng t im n im chn h tr, nhng khng phi ngc li.

- Trong tab Material v Orientation :+ Materrial : chn vt liu nh Steel.. + Grade : cp vt liu , v d nh A42, A45, A50 + Thickness : dy ca vt liu.

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- Nhn Flip Phn trc thng ng ca n :

- Tab custom Attributes dng ty chnh thuc tnh :

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V D : Lnh Shape c trnh by lnh End Plate. 4 . Create small assemblies: - Small assemblies c nh ngha nh cc b phn c s dngtrong vic kt ni cc b phn khc cu trc (cc tm hoc cc hnh dng) ,cc tm lp rp sau nh v hoc truyn ti n. Small

assemblies bao gm cc brackets, collars, chocks,transitions, ..vv - Click vo Small Assemblies bng lit k : icon. - Hp thoi Catalog Selection for Small Assemblies m ra v

-Double-click vo Chocks chapter, k n chn CH-8 , ri nhn ok.21

- Hp thoi Insert Object : + Chn Shape 1 : shape va tao + Support plane :chn mt phng cn tao

- Click OK V d : - Trc tin, vo trong mi trng Structure Design tao file v t tn. Xong ri dng lnh Grid tao khung dy vi cc thng s sau : - x, y, z = 100, ri nhn ok.

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- Dng lnh Shape tao hnh thp ch T

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- Nhp cc thng s thp vo

- Ln lt tao thm 1 thanh thp ch T na nh hnh di y: - M lnh Small Asemblies ln : + Nhp Double-click vo Brackets chapter

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+ Xut hin hp thoi, ta chn kneeBracket ok

+ Xut hin hp thoi Insert Object :

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* Chn Shape 1 nh hnh v sng ln :

* Chn Shape 2 nh hnh v sng ln :

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* Ri nhn ok

* By gi xong , ta c hnh nh bn di :

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CHNG II THIT K V M PHNG FORGED STEEL FLOATING BALL VALVEI. Gii thiu v nguyn l hot ng ca Forged steel floating Ball valve :- Forged steel floating Ball valve : l loi van bi c 2 phn thn ghp li, thn van c lm bng thp ti . Bi ni cung cp momen xon chuyn thp v p sut thp . - Van bi l mt van m ra bng cch chuyn mt x l gn lin vi mt qu bng bn trong van. Bng c mt l, hoc cng, thng qua gia khi cng l ph hp vi c hai u ca van, dng chy s xy ra. Khi van c ng li, l vung gc n tn cng ca van, v dng chy b chn. X l hoc n by s c ni tuyn vi v tr cng cho php bn "nhn thy" v tr ca van , van Remy bng bn v thng lm vic t c ngt hon ho ngay c sau nhiu nm b b i . Do mt s la chn tuyt vi cho cc ng dng ngt . H khng cung cp kim sot tt c th l cn thit trong cc ng dng can thip, nhng i khi c s dng cho mc ch ny. Van bi Remy c s dng rng ri trong ngnh cng nghip v h l rt linh hot, p lc ln n 10.000 psi, nhit ln n 200 C. Kch thc t 1 / 4 "n 12" c sn d dng sa cha, vn hnh bng tay hoc bng thit b truyn ng.

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- V an ton , van bi ni Remy c thit k ph hp vi API 607 & API SPEC 6FA. Khi Seat c lm bng vt liu phi kim loi b ph hy trong m chy, p lc t thng ngun y bng vo than kim loi h ngun ct t dng cht lng v ngn chn s r r trong

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van dn n lin kt mt kim loi-kim loi.

Stem c thit k vi vai T-loi tch ri , n chn vo sau m bo an ton khi c p lc .Thit b Anti-Static bao gm bng & stem v Stem vi than van c lp rp bi mt l xo v bi lm bng thp khng g, m bo tt c cc b phn van kim loi l mt khi . Vi li vic quan tm n bo v mi trng trn ton th gii, van kh thi s c s dng rng ri. Van kh thi thp c th ngn chn va c hi, d chy, n r r gy nhim khng kh, v cng rt quan trng l lng kh thi thp van c th trn thot kh thi ti thiu ca VOC gip gii quyt vn "nng ln ton cu ". Bi v thng xuyn m

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ca v ng ca van, bnh thng ht than ch c th c rt ra bi cc gc, wi s gy ra r r. VIZA lng kh thi thp c thit k van s dng lng kh thi thp c bit ng gi m bo con du ca gc. Packing c dng hnh nn c c lm bng vt liu graphite nhn v c tnh nng chu nhit, t cng. Vi cu trc c bit ny, gip lm gim ma st, gc quay ca van tng. Khi s dng nhit thp, hnh dng V tiu chun vng PTFE c s dng kim sot lng kh thot ra. - Van bi c phn iu chnh dng chy c cu to trn v c l cho vt cht i qua. Bi c gi cht gia hai vng lm kn. Tay quay c lp u trn ca cn van. Khi vn tay quay mt gc 90o th van s v tr ng hoc v tr m. Do van bi cng l loi ng m nhanh. V hnh dng ca chng nn van bi c trn v vn hnh c d dng hn van nt. V th nn gim c lc ma st gia bi v cc vng lm kn khi vn hnh do chng khng cn ti s bi trn. Tay quay ca van bi cng ging nh van nt n s nm song song vi dng chy khi van v tr m. Cn khi tay quay nm vung gc vi ng ng th n v tr ng. Van bi cng c th c ch to dn dng chy theo nhiu hng. - Loi ny ngoi vic ng v m n cn c th i hng i ca dng chy. Van ny ch c cn tr dng chy nh nn s st p v hin tng to xoy khi dng chy qua van cng rt nh. Van bi thng khng dng cho mc ch iu chnh dng chy v khi chng v tr

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iu tit th phn ca van nm trong dng chy s b mi mn nhiu hn. - phc v cho vic iu tit dng chy th van bi phi c thit k c bit. Ca van thuc loi ny l tm kim loi lin, ca van ch tip xc vi vng lm kn khi n v tr ng hon ton. iu ny cho php dng chy i qua ton b din tch ca ca van khi n ch m mt phn. V th nn n c th dng iu tit dng chy m khng xy ra s mi mn khng ng u.

II. Thit k v m phng van bng phn mm Catia:

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