Na mpempe akwụkwọ stamping, drawbeads bụ isi ihe na-achịkwa inflow nke mpempe akwụkwọ metal na-etolite nnukwu panel. Ọtụtụ ọmụmụ lekwasịrị anya na a otu-bead imewe, nke na-enye mmachi njide;naanị ihe ọmụmụ ole na ole ekpuchila otutu bead ma ọ bụ geometries ndị ọzọ.” Ịse ihe mgbochi Weld Bead na Sheet Metal Drawing Operations,” otu akụkọ gbasara otu bead e bipụtara Nov/Dec.STAMPING Journal 2020, na-akọwa na enwere ike ịbawanye njikọ na ụfọdụ. oke site n'ịbawanye omimi ntinye nke bead nwoke na ime ka radius nke bead ahụ pụta ìhè.
Radius dị nkọ na-abawanye nrụrụ nke mpempe akwụkwọ ka ọ na-ehulata / na-agbatị na nzọụkwụ ọ bụla, ebe ọ na-agafe na drawbead. Maka ihe ndị nwere njedebe ductility, dị ka aluminum alloys na elu elu ígwè ígwè, na-ebelata deformation larịị kwa ekwe / ehulata. okirikiri na-adịghị ekwe ekwe site na iji nnukwu weld bead radii nwere ike inye aka gbochie mpempe akwụkwọ cracking. Kama ime ka radii ndị a nkọ, ihe mgbochi nwere ike mụbaa site na-amụba ọnụ ọgụgụ nke ehulata / ịgbatị nzọụkwụ (lee Figure 1).
Ebumnuche nke ọmụmụ ihe a bụ iwebata ngwakọ otu-bead / dual-bead design na nyochaa arụmọrụ nke nhazi a n'ihe gbasara ike njikọ ya. Karia otu bead nwere ike imeghari. Nke a na-ebute ike njide dị elu maka ntinye otu bead ma ọ bụ ikike ibelata ntinye bead iji belata nrụrụ mpempe akwụkwọ.
A na-anwale ụdị aluminom AA6014-T4 iji chọpụta otú ntinye nke etiti etiti na ọdịiche dị n'etiti nrapado na-emetụta ike njikọ. Ihe nlele ule ejiri mee ihe ọmụmụ a bụ 51 ± 0.3 mm n'obosara, 600 mm ogologo, na 0.902 ± 0.003 mm. A na-eji igwe egweri 61AUS dị ọcha ma tinye mmanu nke ọma nke ọma. A na-eji igwe igwe D2 arụ ọrụ na okpomọkụ na HRC 62.
Ọnụọgụ 2 na-egosi akụkụ nke bead abụọ a na-atụgharị nke a na-eji mee ihe n'ọmụmụ ihe a. A na-eji otu drawbead simulator na hydraulic cylinder system mee ihe n'ọmụmụ ihe a tụlere n'isiokwu gara aga, nke na-egosi nhazi usoro ahụ n'ụzọ zuru ezu. A na-agbanyekwa mgbakọ simulator drawbead dum. N'elu tebụl nchara n'ime etiti nke igwe nyocha tensile Instron, na ntinye abụọ-bead na-agbanwe agbanwe na-agbanye na simulator drawbead.
N'oge nnwale ahụ, a na-etinye ike njigide mgbe niile nke 34.2 kN iji mee ka ọdịiche dị n'etiti akụkụ elu na nke dị ala nke drawbead na-agbanwe agbanwe mgbe a na-adọta mpempe akwụkwọ ahụ n'elu drawbead. Ọdịiche dị n'etiti elu na nke ala nke drawbead na-adịwanye ukwuu mgbe niile. karịa ọkpụrụkpụ nke mpempe akwụkwọ, ma na-edozi ya site na shim set.
Usoro ule yiri nke a na-eji na ule bead monotunable kọwara n'isiokwu gara aga. Jiri oghere a na-edozi anya mee ka ọdịiche dị n'etiti oghere dị n'etiti agụba ma jiri mmetụta mmetụta iji chọpụta izi ezi nke ọdịiche ahụ. ngwa nyocha na-ejide elu elu nke mpempe akwụkwọ ahụ, ebe njedebe ala nke warara na-ejikọta n'etiti ntinye.
Emepụtara ọnụọgụ ọnụọgụ nke nnwale drawbead site na iji sọftụwia Autoform. Ihe omume ahụ na-eji usoro ntinye aka na-enweghị ihe ọ bụla na-eme ka arụ ọrụ na-emepụta, na-enye ohere mgbanwe dị mfe nke ụdị ịme anwansị na-enweghị mmetụta dị ukwuu n'oge mgbakọ. Enyere ụdị ọnụọgụgụ n'isiokwu gara aga.
A na-eme nnwale iji chọpụta mmetụta nke ntinye bead etiti na arụmọrụ usoro bead a dọtara. A nwalere ya na 6mm, 10mm, 13mm center pass penetration na enweghị ebe etiti na-eme ka ọdịiche dị n'etiti ntinye na lath na 10% nke ule nyocha. Emere ule atọ maka nhazi geometric ọ bụla iji hụ na nsonaazụ na-agbanwe agbanwe.
Ọgụgụ 3 na-egosi nkwughachi nke nsonaazụ nnwale maka ntinye bead 6 mm n'ụdị atọ, yana nkezi ọkọlọtọ ọkọlọtọ nke 0.33% (20 N).
Onyonyo 1. N'ime ngwakọ dọpụta bead imewe, ntinye a na-agbanwe agbanwe nke bead ahụ na-enye njide ka ukwuu. Iweghachite bead ahụ na-atụgharị cha cha a ka ọ bụrụ nhazi otu bead ọdịnala.
Ọnụ ọgụgụ 4 na-atụnyere nsonaazụ nnwale (enweghị bead etiti na ntinye 6, 10 na 13 mm) na nsonaazụ simulation. Nnwale nnwale ọ bụla na-anọchite anya ihe nnwale atọ. , na nkezi dị iche na nsonaazụ nke ihe dịka ± 1.8% .Nchọpụta ule na-egosi n'ụzọ doro anya na ịba ụba bead penetration na-eduga n'ịbawanye ike na-ejikọta.
Tụkwasị na nke ahụ, a na-enyocha mmetụta nke ọdịiche dị na ike mgbochi maka nhazi okpukpu abụọ nke aluminom AA6014-T4 na etiti bead dị elu nke 6 mm. A na-eme nchọpụta nke a maka ọdịiche nke 5%, 10%, 15% na 20% nke ọkpụrụkpụ ihe atụ. A na-edobe ọdịiche dị n'etiti flange nke ntinye na ihe nlele ahụ. Nnwale na nyocha nke dị na Fig 5 na-egosi otu ihe ahụ: ịba ụba nke ọdịiche ahụ nwere ike ime ka mbelata dị ukwuu na nkwụsị nke drawbead.
The esemokwu ọnụọgụ nke 0.14 họọrọ site reverse engineering. A numerical nlereanya nke drawbead usoro e wee jiri ghọta mmetụta nke ọdịiche dị n'etiti mpempe akwụkwọ na flange maka 10%, 15% na 20% mpempe akwụkwọ metal ọkpụrụkpụ gaps.For a 5 % oghere, ọdịiche dị n'etiti simulated na nnwale bụ 10.5%;maka oghere buru ibu, ọdịiche dị ntakịrị.N'ozuzu, ọdịiche a dị n'etiti ịme anwansị na nnwale nwere ike ịpụta site na nrụrụ nke ọkpụkpụ siri ike, nke nwere ike ọ gaghị ejide ya site na ọnụọgụ ọnụọgụ na nhazi shei.
A na-enyochakwa mmetụta nke oghere na-enweghị eriri etiti (otu nnukwu bead) na njide. A na-emekwa usoro nyocha a maka ọdịiche nke 5%, 10%, 15% na 20% nke ọkpụrụkpụ mpempe akwụkwọ. Foto 6 na-atụnyere nsonaazụ nnwale na ịme anwansị, na-egosi njikọ dị mma.
Ihe omumu a gosiputara na ntinye nke bead etiti nwere ike igbanwe ike nke na-ejikọta ya site na ihe kariri 2. Maka aluminom AA6014-T4 billet, a na-eme ka a na-eme ka ibelata ihe mgbochi dị ka oghere flange meghere. Nlereanya ọnụọgụ nke emepụtara nke igwe mpempe akwụkwọ na-erugharị n'etiti ebe a na-adọba ụgbọala na-egosi njikọ dị mma na nsonaazụ nnwale ma nwee ike mee ka usoro nnwale ahụ dị mfe.
Ndị na-ede akwụkwọ ga-amasị ikele Dr. Dajun Zhou nke Stellantis maka ndụmọdụ ya bara uru na mkparịta ụka na-enye aka nke nsonaazụ ọrụ ahụ.
Akwụkwọ akụkọ STAMPING bụ naanị akwụkwọ akụkọ ụlọ ọrụ raara onwe ya nye maka mkpa nke ahịa stamping metal. Kemgbe 1989, mbipụta a na-ekpuchi teknụzụ dị oke ọnụ, usoro ụlọ ọrụ, omume kachasị mma na ozi iji nyere ndị ọkachamara na-ama stampụ aka na-arụ ọrụ ha nke ọma.
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Oge nzipu: Mee-23-2022