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1 08 OJ u m a l o f D o 叩 月勺日 Un i eV sr iY t( En g . Ed . ) OV I . 18N o . 2 ( 2 )( X l ) P ar a m e廿ic D es i gn o f M o d u l ar F ix t ur e Str u e t ur e e加 n B 恤 gbi n g (陈冰 冰 ) c o el l g e of 叼滋 加几ia c l En g ien e月八 g , o D g n Hi们 n Ui v e 招i勺 2X ( X )s l 致朗ed o n叨 e困田.p】e o f l s t y t Pici a s枉”cture , 出e 肠朋召加i Co n c ePt o f modu l a r 伪劝盯 est r ”ct“r e m odu le 1 5 Pr e s即ted , a n d 比e s杠”c奴业e 口odule sy s te , n o fm odu】a r f七加e ri s s切 m吐田d e Zd . Tben h t e Pa r 哑 e川e d朋ig n o f st ru ct“ r e i s 出口. ed , a. dis t a d v a。扭醉吕日re a l s o . pha sie zd . Fud五en . o r e . s.mese pei6c m e山odsar e po rv ided , s u c h 留 山e se】e ci ton o f践曲盯ec om Ponens t , 比e d e ter t创n L i a to n a nd 加Pu t o f Pa 川刃. etes r , 山旧w恤9 rePr e s en a ti t v e m o de】 , 叻dh t ece ra Uo n o f d r aw 加9 . Fi n目ly a n 即pil ede盆arnP Ie 成 st t”ct t l re p a “ ”ne幻dc d e si幼 1 5 r Pe se n ted . 丑姻四“ 山 : 柳幽勿 ; 卢 对“e r , C汤刀 , : 伽 扭e rm o d u l e . a P r 讲I己宕 门七 凌石g月 石mo e o n s ummg Problem o f dei sg n , a n d sl t n h g t en h t e q u ick】y 化sPo n si v e abii l y to f CA Ds y se t m . Ba s ieCo n e ePt o fSt ruetu re Pa ra m etrie De sig n Intr odUc tio n F认t U比s y se t m sa e r dev i eesus e d i nma n uf ac加的ng Pro c e s ses . 仆 ey O C I a姆 a nd ela J . P h t e wo k r Pie c e i n p o i si to n , a n d en s u叮e i s t sa t ble eq画bi r功 m 助d i dm ensiona l 即e u盯acy duir ng h te m朗ufa e加的ng o p e r ai t o n . Mo d ula r i f x t Ue r1 5 o n e ba r n chofifxu t re sys妞ms , wh j c h ha s h e t sa j me 允n ci t o nsa s。山e r i f x奴叮esyse tms . How ever . 吮 a u骆 it15 a k的d o f md ou l a r O O t 】 i ng a nd is t comO POe nt S 眼 pre . m叨ua f ct U e r d , sa tn山幼idzd e a nd 搜 。心gu ra b le , i tha sis t o例 , f e a奴止 e s 明d av da na tge s . 玩 a c f t , i t ma kes us e o f h e t b as e l a P e t i wh t a t P P曰ho le s o r - Ts l ost o n wh i h c 6又加比 sl t”cn甘e s f o r aworkPi e ce a e r ee rce td . T七e代向e r , 面5y tp e o f6xt U e r d ei sg n g r e adyenh哪e s h t eei f f i c e n c yo f m胡uf a eo ti r n g p找兀七5 5 , 阮 c eo n o加ca l b e n曲s t o f脚d o u et d e si g nand m曲ua f ctu代 f o r ma l l b吹h i s那l 1 1 z . Ta ri d ito na l l y , d ei si g nn g mo d ula r i fxt U re h a s b e e n d on e ma n ua l ly , a n ddee P nds O n exl x 泊e n c e dd ei sg n es r i w h t em P试ci a 几】 。5 o t c o m Ple把 c om p o n e nt h ci o ce , e sa ti b l shm即t a n d id sa s s embl y . t I 15 a i tme . c o nsu n ”ng a nd i neif f elent Pro c e s s , r阅吐甘es w e a l h y t ex l珍n e n c e , 的d i as o lacksInf o m ri a t on i n协a石O n . 了七15滋t Uia t o n ge ra勿 衅 v e n s t h t eaPP】 Icia tonof 硫石bl e Ma n ua fc加的ng s y se t ma nd h e t 山 ve10Pme nt o f C0mu P e t r 玩比.喇Ma n u a f c加的ng Syse tm . n I o川er o t lm Pro v eei f feie ney 助d qua l l y t o f md o u】 a r i f x turo d e 幼g n , i t 1 5i sgn访ca nto t d e ve l 叩 m闻目a r if 大t U e rCA D s y s e m t 阎 4 . o H we v e r , 忱 Ca u s e o f h t ee om Ple劝y t o f mo d ula r i fxt U re di c s g n , h t e e ra e r ma ny红姆c讯eProblem s h ta t ne ed i d sc u ssing , lmPo r v i n g and 5 01恤9 du ring CAD . 玩而5Pap e r , h t e P田旧mei t r c d e sig n o f me d ula r if x tue r s扛” e奴珍e15st Udied , wh i ehea ns olv e h t e h T eestabi lshmein o f mo d ula r i f xture me a n s h t ewholeP( r尤e s s o f as sembli ngis tc o m Po ne n t s o t 比 a i f x t r U etowe r i w h t e e州卫In 加刀cdo n . Dui rngmo du la r石戊tu r e CAD , i f 此 mo du la r i fx奴叮eis e sa tbi lsh ed by oneeomPonent 峨 e ron e com p o nent , it i w l le r s u l tin 苗,ia l d e溢g n , lo n合le ad time a n do tw ei f feien ey , b e ea u s ema ny e rdunda nt op er ai t o n s will c o cu r dun n g h e t Prc oe s s o f c o mp e ne nt s ele ei to n a nd a s肥m b ly . T卜1515 o n e o f h t e k e ya f et临h ta t Pr ev ent h e t a Pil P ci a t o n o f md o ula r if xt Ure CADo th t ec or rea l i t v e ma n ufactui rg n entep ri r s e a t h t e Pr e sei n da y . o Hw ev e r , f o r h te sa ke o f s仕u ct L叮e a红犯ct , v e e y r mo d ula r if x t切e rea n b e i v d ide d i no t sev e ral i l而e tdPar ts , nam e lyba sie sl tu ct Ure , lo c a i n t g s仃uc奴叮e , ela mPingsnu ctIJre , i o r e ntlng s如c枉。 a nd s uP闪血9st r Uct Ureet C . The ref oe r , du对ng h t e pro c essofmo d u l a r6xtu比CAD , if e stablish ing mo d川a ri f xt L叮e15 bas e do n 如 5 kind ofsl t”ctu r ee onsideri a to n a n d h t e d e sig ned souc枉叮eca n b e u s叻 a n如m e a n da nywh ee r , i lk e h t e wa y o f h t e subo rui tne wh i chea n 比 e al led a n扣m e andan y w he e rd团ngh t e r P og r句旧 d e sig n , h e t e sa b t il shl n e nteif f eiec n y15 加p r o ved g e r ady a n d inf on uia t 叱 c曲 b e h s a e r dwi h t . Thlsf oi gca li f飞me of st r Uct Ure 15 sho w n i niFg . 1 . 玩 沉de r o t ma k est r Ueu t e r md o u l e s adaPa t b le a n df l exible , h t e p. 刊t n ei t rcmeh t o d 1 5 adoPt ed . t I1 5 r Pa ci t ca b l e , b e ca u s e , o t h e t s句me萄ndofst ru ct t叮e s i n h e t dif l 沁助ti fxu t re p la n s , h e t y a e r eomO Pse dof h t ee omp on e ns t wih th t es油ni】a r y tp e a n d e sa t bi l shme nt e l r ai ton 如P , 胡dh t e id月免r e n e e 15 o u ly h e t s过es of eom p o n e ns t o t meet h e t n ee ds o f h t e dlf f匕 re n t wo tkPie c es . Bas ed o n h i t s a na l yi ss , it15 ec o n luded h t atas如cnir e md o u l e 15 comp esd e of acer talnn u m b e r o f e omp onents a n d e sa tbi lshed a c co rdlng o t eedain S P ai t a l a n dloi ge e rli a to n s , i n wh i eh h t e p出a rmete rs o f h t e i se z s a ndO P is i to n s o f h e t c o mp o n e n s t a e r cha n g e a b l e a nd h t ei rv a l u e s 眼 d e e t n ”In ed by h e t wo rkPle c e i“e】 f a n di t s ma nufa ct U i rng r Po c ess . T七1515 s- o ea l l e d h t e Pa r ameit re d e i sg n o f m odu】 a r i f x奴叮est ructUre . Thls m eh t o d i d v i d e s h t e e onc r ee t a nd eomPi lca招de s a b t i l sh功e nt Po rb】 em ino t a s幼es o f e l r ai tv ely i n d e p e nde ntst t” ct切e rs , a n dh t e nassembles h t e h w ole me d ul a r i f xt切e r me d u】e b y m od u l e . Tw o s e t s P a e r take n o te ra l le z h e t de sig nP找兄e s s : ( 1)h t e su t r e姗 a na l yi ss ( 2 ) h e t 一 Re c eive d Ma r . 1 , 2加l O J u m a l o fDo n gH U a nU i ve sr tiy (n E g . dE , )V o l . 18N o . 2 (2X ( ) l)109 曲 M M M odula r Fixture e e B B Ba siestr uetur e e e e e Clam Ping str u cture e e e e Loe ating st川etur e e e A A A I , A Z , 二 Bl , BZ , 二二二 C 、 , C Z , . c c c c c c com P0ncnts s s s s c omPone n比s s s s s com Po n e nt s s s s s s s B B B B B B B B B B B B B B B B B B B B B B B 11 , B12 , . . . . . B 21 , B22 , . . . . . C11 ,C 12, . . . . . . . . . . . . . . . . . . . . . . . . . A A AZ I ,人2 2 , . . . . . . . . . . . . . . . . U I L 甲 U.、场 场 C C C C C C C C C C C C C C C C C C C ZI , C 22 , . . . i Fg . 1 h T e 10glc a l台a J 刀eo fm团ula r si t”ct u re det er ri n n i a to n o fh t e k e yp田忿r net e T s o fh t est ru ct r Ue . St r ueture A na lysis a n d Dete rm in stio nof PaF8metGFS St r U et Ure a n a lysis15t o ela ssif y it s e om p on e nt s a n d a n alyze h t ei r p o sii t o n r elai to n s . Show nin i Fg . 215 a lev el elam Ping st r Ue奴r I e , on e wid e l y us ed elam Ping sl tu c奴叮e , wh i eh15ta ke na s a n ex a m Pl eo t i l l ust rate howo t e anyoutst r Uctu re a na l y sis . l Ah t ouh g i o r en e d t to di f f er e ntwo rkPle e e s , in h t e v i e州O Pintof d e sig n , h t eela mPi n gst r Uet t玫eha su sua l l yh t re e dif l七r enti k nd sof s uh C a s h t e sPnng , h t e e r c杨n Lgul- a r hea d serew a ndh t esPh i e r e i - a hea d s ee rw . Di u r ng d e sig n , i fh t e wok rPlc e e a n distma n u加ct I J的ng Pc o r e s s a e r k n o w n , a nd h e t if r st i k ndofeomp o n e n t15 d s ter ri nne d , h t ei r s P a c e p oi s i to n s a e r d e e t n 刀ine d a n dh t ei r l e n h g t sca n i as o b e dee t r lnlned th r o uh g a s s em bl y id me nsio n ehiane a l c u l ai to n . As sho w n in i Fg . 3 , h t ele n h g t L I of e rcta ngu l - a r he ads c rew isH + hl + hZ+h3+smm + 13mm a n dh t e l e ngh t L Z o f s Pheir ci a 一h ea d H + (5 一 10) m m , w he化H15 h e t heig ht ofworkpje c e . h Te n L I a ndLZ i f j dhe r d e e t nnln eh tei rse Peii fei a to n e r s例戈i v tely . h 3放曰 , , 心 卜卜卜卜 枉枉枉枉 仁仁仁仁 . . . . . . . 卜卜 权权权权 J J J J J J J 甲甲. nUt ela mPing boa rd n Ut sh Peire介hoa ds crew e r eta ngula - r heads e r ew m m m m m m m 厂厂厂厂 万万万 .月 月甲 . . . . . . 二( ( ( ( ( 、 、 、 . . . . . . . . . . .、. . . . . . . . . . . .、. . . . . . . ; . . . . . . . i F g . 3 h T eca l c u l i a to no f a s s em blyid们ne ni so n cba jn i Fg . Z C叻eo f Ieve l el田旧Pi ngsltucture S (l ) T七e c omO P e n n twih tf l e劝bl e g e i c t r dit r岭nsio n s a nd s Pa c e p o siito ns , s u eha sh t e elamPing b o a r d . Diu r ng d e sig n , its 钾讲 胡d sp ee饭e ai ton a e r sel eee tda e e o rding o t h e t wok rPie c e shap e , i d m e n sio n s a n dma n侧f actl lir n gr P o c ess , a n d itea n a l s osil d e 川加glt s o从. 9找旧v e a n do rtate a o r u n d h t e 葫 5of h t e 比ea t ngu l a - r h e a d c s r ew . h T e化o f re , i s t y tp e , se Pc饭c a 石on a nde l ri a tv e s P a c e p o i si to n a e r a l l eha ngea ble . t I15h t e k e y eom p o ne nt , b e e au s eh te oh te re om脚ne ns t a e r d e te n ni n eda e c ordi n go t it . Us ua l l yh t e e r 15 。目y o n e s u c h eom p o ne