Kutadza kwese kweBIW kwekugadzirisa kunotanga nenzira imwechete-kwete nekuputsika, asi nekusajeka kwakajeka panguva yekutanga mutyairi wendege. Takazviona kaviri gore rino: mutengesi weTier-1 muGermany akarasa 473 welded subassemblies nekuti simba rekumanikidza rakasiyana ± 12% pazviteshi zvitatu zvakafanana. Chikonzero chikuru? Kwete kuneta kwezvinhu kana kukanganisa kwedhizaini-asi kusawirirana kwedatum panguva yekusimbisa gadziriso yekuvaka. Ndicho chikonzero "BIW fixture" haisi chikamu chete; ndiye mutongi gava wakanyarara wedimensional kutendeseka mukati me3,000+ weld points pamutumbi.
Nei BIW Fixture Dhizaini Inoraira Zvemotokari Kugadzira Velocity
A BIW fixture inoita basa rimwechete ne zero margin yenhaurirano: bata mapepa esimbi zvikamu mukati me ± 0.15 mm ukuwo marobhoti MIG pfuti achiisa 8-12 kg ye weld simbi paminiti. Kukundikana izvo, uye iwe unokonzeresa cascade-rework inononoka takt nguva, rework inokonzeresa kukanganiswa kwemafuta, kukanganisa masimba manyore shimming, uye shimming inokanganisa GD&T kusimbiswa. KuBotou Haijun Metal Products Co., Ltd., takavaka anopfuura mazana maviri negumi ezvigadziriso zveBIW kubva 210 zvevatengi muNorth America neEurope. Muzviitiko zvese, zvigadziriso zvepamusoro-soro zvakagovanisa hunhu hutatu husingagone kutaurirana: modular datum architecture, akaomeswa mapini elocator ane ≤0.005 mm runout, uye akabatanidzwa CMM-inopindika mareferenzi spheres pamaprimary datums A-B-C.
Zvikwata zvizhinji zvinorerutsa kuti kuomarara kwakadini kunokanganisa weld mhando. Yedu data inoratidza kuwirirana kwakananga: zvigadziriso zvine mabhesi epasi pasi pe60 mm mukobvu zvinoburitsa 23% yakawanda post-weld kukanganisa mumagungano enjanji pane ayo ane 80 mm akakandwa mabhesi esimbi. Sei? Mahwendefa matete anochinjika pasi pe4.2 kN anosunga mitoro-yakakwana kushandura chikamu chinzvimbo chepakati-weld. Isu ikozvino tinotsanangudza hushoma hwaro hukobvu nekushandisa: 65 mm yemasuo emukati mapaneru, 75 mm yepasi pani, 85 mm kune yakazara underbody inotakura.
Iwo Matatu Chaiwo-Nyika Pitfalls Hapana Manual Anonyevera Nezve
Vamwe vangakakavara kuti CAD simulation inobvisa njodzi yemuviri. Nekudaro, yedu chitoro pasi bvunzo inoratidza zvimwe. Kuwedzera kwekupisa kwega kunobvisa 17% yekutanga-chinyorwa chinovaka-kunyangwe kana FEA modhi dzinofanotaura kugadzikana kwakakwana. Hezvino izvo chaizvo zvinoputika:
Datum inokambaira kubva yakadzokororwa kupisa bhasikoro: Mafuremu ealuminium anowedzera 2.4 × nekukurumidza kupfuura zvikamu zvesimbi. Mushure me 420 weld cycles, takayera 0.11 mm kudhiraivha muZ-axis locators pane yekumashure kota mapaneru-zvakakwana kuramba zana rezvikamu zvichipesana necheki geji yekupedzisira. Kukanganisa kweclamp nerobhoti nzira: Mutengi "akagadziridzwa" 3-point clamp marongero akavharira 38 ° yerobhoti kutenderera kwemaoko. Mhedzisiro? Weld skips, porosity, uye isina kurongwa downtime. Isu ikozvino tinoda offline marobhoti nzira kugadziridzwa kusati kwatanga machining. Surface kupera kusawirirana pakati pekugadzirisa uye chikamu: Ra 0.8 μm nzvimbo dzekugadzirisa pazvikamu zvesimbi zvinotonhora (Ra 1.6 μm) zvakakonzera tumadiki tudiki tukawedzera kuita hurema hwependi. Mhinduro: kuenzanisa roughness mukati me ± 0.2 μm-uye simbisa neprofilometer, kwete kuongorora kwekuona. Kuchinja Kunoita Kusarudzwa Kwezvinhu Zvose—Kupfuura Mutengo Wako
Stainless simbi locators vanoramba kupfeka, asi vanoitisa kupisa 15 × nekukurumidza kupfuura yakaomeswa mudziyo simbi. Izvi zvinonzwika sezvinobatsira-kusvikira iwe waona kuti kupisa kunopinda muchikamu chedhamu panguva yewelding, zvichikonzera kuwedzera kwenzvimbo. Isu takachinjira kuAISI H13 chishandiso simbi (52-54 HRC) kune ese akakosha locators mushure mekuyedzwa kwakaratidza kuti yakabata chinzvimbo chechokwadi 3.7 × kureba pane isina tsvina pasi peakafanana weld masheti.
Base material inonyanya kukosha. Cast iron inopa kunyorova asi inowedzera huremu uye kukanda musiyano. Yedu yazvino chiyero ndeye EN-GJS-600-3 ductile iron-ishoma tensile simba 600 MPa, yakavimbiswa graphite spheroidization> 90%, uye muchina flatness ≤0.02 mm/m². Nechimbichimbi prototyping, tinoshandisa kushushikana-kudzoreredzwa AL-6082-T6, asi chete nelaser-sintered simbi inoisa panzvimbo dzelocator. Usambofa aluminium-chete yezvigadzirwa zvekugadzira.
Isu tinosimbisa yega yega BIW gadziriso ine matatu anoteedzana cheki: 1) CMM kuyerwa kwevose vanowana vachipesana nezita reCAD, 2) kudzokorora bvunzo (gumi madhigirii, max kutsauka ≤0.01 mm), uye 3) bvunzo inoshanda ine zvikamu zvakadhindwa chaizvo pasi pemutoro wakakwana. Kana danho ripi zvaro rikakundikana, tinodzokorora-kwete kushanda zvakare.
Kugadzirira Kugadzira—Kwete Kungoungana chete
A BIW fixture inofanirwa kurarama mazana mashanu ezviuru macycles pasina recalibration. Izvo zvinoda dhizaini-ye-sevhisi, kwete chete dhizaini-ye-assembly. Isu tinodzvanya sevhisi maficha akananga mujometry: mapini elocator ane 12 mm hex flats yekubvisa-inodzorwa-torque, nzira inotonhorera inofambiswa nemaplateti epasi (kwete ekunze hose), uye akamisikidzwa M8 maburi ekumisikidza akapatsanurwa pakati pe100 mm-kuti vatengi vagone kudzoreredza pneumatic clamps pasina kugadziridzwa patsva.
Botou Haijun's ISO-inoenderana nzvimbo inomhanyisa inovaka paCNC machining nzvimbo ine chaiyo-nguva yekupisa muripo. Yese yapedzwa zvikepe zvikepe zvine chinoteedzera calibration mushumo, kusanganisira CMM scan data, kuoma kwepamusoro kuverenga, uye clamping simba kusimbiswa pachiteshi chega chega. Hapana fungidziro. Kwete "se-yakavakwa" fungidziro.
Kana yako inotevera BIW fixture purojekiti yatanga, bvunza mibvunzo miviri kutanga: Ndeipi yakaipisisa-yenyaya yekupisa gradient yaichaona? Uye ndeipi datum poindi inotakura yakakwirira yekuwedzera kushivirira stack-up? Pindura avo usati wavhura CAD-uye iwe unodzivirira 80% yekutadza kwemunda. Precision haina kuwanikwa mukuongororwa kwekupedzisira. Yakavharirwa mukati pekutanga locator pini yekuiswa.
Zvezvikwata zveinjiniya zvinovaka zvigadziriso zveBIW zvinounza goho rinoenderana rekutanga, kugadzikana kwedimensional, uye hupenyu hwesevhisi kupfuura makore mashanu—biw fixture kuita kunotanga ne metallurgical discipline, kwete kungoita ma mechanical marongerwo. Ndiyo mwero watinoinjiniya kuBotou Haijun Metal Products Co., Ltd.
