Mupepa resimbi stamping, drawbeads chinhu chinokosha pakudzora kupinda kwepepa resimbi kuti riumbe mapaneru makuru.Zvidzidzo zvakawanda zvakatarisa pane imwe-bead design, iyo inopa kusungirirwa zvishoma;zvidzidzo zvishoma chete zvakafukidza akawanda ekudhonza-bead kana mamwe majeometri. ”Kudhirowa Weld Bead Constraints muSheet Metal Drawing Operations, "chinyorwa chiri pamusoro pe-single-bead dhizaini yakabudiswa Nov/Dec.STAMPING Journal 2020, inotsanangura kuti kusunga kunogona kuwedzerwa kune vamwe. kudzika nekuwedzera kudzika kwebead yemurume uye kuita kuti radius yebeche iwedzere kunanga.
Iyo inopinza radius inowedzera deformation yepepa resimbi sezvainokotama / kutwasanudza nedanho rega rega, ichiyerera nepakati pedrawbead.Kune zvinhu zvine ductility shoma, senge aruminiyamu alloys uye advanced high-simba simbi, kuderedza deformation level per bending/ isiri-kupeta kutenderera nekushandisa yakakura weld bead radii inogona kubatsira kudzivirira sheet metal kuputika.Panzvimbo yekuita kuti radii iyi iwedzere, kuzvidzora kunogona kuwedzerwa nekuwedzera nhamba yekukotama / kururamisa matanho (ona Mufananidzo 1).
Chinangwa chechidzidzo chino chaive chekuunza magadzirirwo akasanganiswa ega-bead/dou-viri-bead uye kuongorora kushanda kwegadziriro iyi maererano nesimba rayo rinogoneka. kupfuura bhedhi rimwechete rinogadziriswa.Izvi zvinoguma nepamusoro-soro yekusunga simba rekupindira kwebhedhi imwechete kana kukwanisa kuderedza kupinza kwebheti kuderedza pepa deformation.
Aluminium AA6014-T4 zvienzaniso zvakaedzwa kuti zvione kuti kupinza kwepakati bead uye mukaha uri pakati pekunamatira kunokanganisa simba rinosunga.Mienzaniso yekuedza yakashandiswa pachidzidzo ichi yaiva 51 ± 0.3 mm yakafara, 600 mm kureba, uye 0.902 ± 0.003 mm gobvu. Chenesa uye nekuzora nemazvo masamples emapepa uye anoisa ane 61AUS Kukuya Oiri.Drawbead inoiswa inogadzirwa kubva kuD2 chishandiso simbi uye kupisa kunogadziriswa kuHRC 62.
Mufananidzo 2 unoratidza zvikamu zve tunable double bead yakashandiswa muchidzidzo ichi.Iyo yakafanana drawbead simulator uye hydraulic cylinder system yakashandiswa muchidzidzo chakakurukurwa munyaya yapfuura, iyo inopa dhizaini yehurongwa zvakadzama.Iyo yese drawbead simulator assembly yakaiswa patafura yesimbi mukati mechimiro cheInstron tensile yekuyedza muchina, uye inogadzirika mbiri-bead inoiswa inoiswa mudrawbead simulator.
Munguva yekuedza, simba rinoramba riripo re34.2 kN rakaiswa kuchengetedza mukaha pakati pekumusoro nepasi pechikamu chedrawbead chinoenderana apo bepa raidhonzwa pamusoro pedhivha. kupfuura ukobvu hweshizha, uye inogadziriswa neshim set.
Maitirwo ekuedza akafanana neakashandiswa pakuedza bhedhi kunogoneka kwakatsanangurwa muchinyorwa chapfuura.Shandisa yakabatidzwa spacer kugadzira mukaha unodiwa pakati pemablades uye shandisa chinofefetera geji kuratidza chokwadi chepakakoromoka.Chibatiso chepamusoro chetambo. midziyo yekuyedza inosungirira kumucheto kwepamusoro kwepepa, nepo kumucheto kwezasi kwemutsetse kunosungirirwa pakati pezvakaiswa.
Nhamba dzemienzaniso yezviyero zvedrawbead dzakagadzirwa pachishandiswa Autoform software.Purogiramu inoshandisa nzira isina kujeka yekubatanidza kutevedzera maitiro ekugadzira, zvichibvumira kushandurwa kuri nyore kwemuenzaniso wekuenzanisa pasina kukanganisa zvakanyanya nguva yekuverenga.Iyi nzira inorerutsa kuedza kwe mold uye inoratidza kuwirirana kwakanaka nemhedzisiro yekuedza.Details yemuenzaniso wenhamba inopiwa munyaya yapfuura.
Maedzo akaitwa kuti aone mhedzisiro yepakati bead kupinda pane yakadhirowewa bead system performance.Yakaedzwa ne 6mm, 10mm, 13mm centre pass penetration uye pasina centre pass uku uchichengeta mukaha pakati pekuisa nelath pa10% ye test specimen ukobvu. Miedzo mitatu yakaitwa kune yega yega geometric kumisikidzwa kuti ive nechokwadi chekuenderana.
Mufananidzo 3 unoratidza kudzokorora kwemhedzisiro yekuedza kwe6 mm bead kupinda mumienzaniso mitatu, ine avhareji yekutsauka kwe0.33% (20 N).
Mufananidzo 1. Mukugadzira bhiza rakasanganiswa, kupinda kwebead kunogoneka kunopa kuzvidzora.
Mufananidzo 4 unoenzanisa migumisiro yekuedza (hapana bead yepakati uye 6, 10 uye 13 mm kupinda) nemigumisiro yekufananidza.Chiratidzo chega chega chekuedza chinomiririra zvinoreva zviedzo zvitatu.Inogona kuonekwa kuti kune kuwirirana kwakanaka pakati pekuedzwa nemigumisiro yekufananidza. , neavhareji misiyano mumhedzisiro inenge ± 1.8%.Migumisiro yebvunzo inoratidza zvakajeka kuti kuwedzera kwebead kupinza kunotungamirira kuwedzera kwesimba rinosunga.
Mukuwedzera, kuitika kwegap pane simba rekudzivirira kwakaongororwa nokuda kwekugadziriswa kwe-double-bead yealuminium AA6014-T4 nehupamhi hwepakati pehupamhi hwe 6 mm. Iyi seti yezviedzo yakaitwa kune mapeji e5%, 10%, 15% uye 20% yemuenzaniso wehupamhi.Gap inochengetedzwa pakati peflange yekupinza uye muenzaniso.Kuedza uye kuenzanisa kunoguma mumufananidzo 5 kunoratidza maitiro akafanana: kuwedzera kwepakati kunogona kutungamirira kukuderedza kukuru kwekudzivisa drawbead.
The friction coefficient of 0.14 yakasarudzwa nereverse engineering.Muenzaniso wenhamba wedrawbead system yakabva yashandiswa kunzwisisa mhedzisiro yegap riri pakati pebepa neflange pa10%, 15% uye 20% sheet metal makobvu gap.Kune 5 % gap, mutsauko pakati pezvakafananidzirwa uye zvekuedza mhinduro ndeye 10.5%;pamipata mikuru, mutsauko idiki.Pakazara, kusiyana uku pakati pekufananidza uye kuedza kunogona kuverengerwa kuburikidza ne-kukobvu shear deformation, iyo inogona kusabatwa nenhamba modhi mukuumbwa kwegoko.
Mhedzisiro yepakati isina bhero repakati (rimwe bhero rakafara) pakusunga rakaongororwa zvakare.Iyi seti yezviedzo yakaitwa zvakare kune maburi e5%, 10%, 15% uye 20% yesheet ukobvu.Mufananidzo 6 unoenzanisa mhedzisiro yekuedza uye yekufananidza, inoratidza kuwirirana kwakanaka.
Ichi chidzidzo chakaratidza kuti kuiswa kwepakati bead kwakakwanisa kushandura simba rekubatanidza nechinhu chinopfuura 2.Kune aluminium AA6014-T4 billet, maitiro akaonekwa kuderedza simba rekudzivirira sezvo gwanza reflange rakavhurwa. yakagadziridzwa modhi yenhamba yeshizha simbi inoyerera pakati pemadhirowa enzvimbo inoratidza kuwirirana kwakanaka kwese nemhedzisiro yekuyedza uye inogona kuita kuti maitiro ekuyedza ave nyore.
Vanyori vanoda kuonga Dr. Dajun Zhou weStellantis nokuda kwezano rake rinokosha uye hurukuro inobatsira yemigumisiro yeprojekti.
STAMPING Journal ndiyo yega yeindasitiri magazini yakatsaurirwa kushandira zvinodiwa pamusika wesimbi.Kubva 1989, chinyorwa ichi chave chichibata-bata matekinoroji, mafambiro eindastiri, maitiro akanakisa uye nhau kubatsira nyanzvi dzekudhinda kuita bhizinesi ravo nemazvo.
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Nguva yekutumira: May-23-2022