Nyanzvi yekunyora ma "bending" Steve Benson anobata maemail evaverengi kuti apindure mibvunzo nezve "hemming" uye "bending calculations". Getty Images
Ndinowana maemail akawanda mwedzi wega wega uye ndinoshuva dai ndawana nguva yekupindura ese. Asi zvinosuwisa kuti hapana nguva yakakwana pazuva yekuzviita zvese. Pachikamu chemwedzi uno, ndaunganidza maemail mashoma andine chokwadi chekuti vaverengi vangu venguva dzose vachawana achibatsira. Panguva ino, ngatitangei kutaura nezvenyaya dzine chekuita nehurongwa.
Mubvunzo: Ndinoda kutanga nekutaura kuti unonyora chinyorwa chakanaka. Ndakaona zvichibatsira zvikuru. Ndanga ndichinetseka nedambudziko musoftware yedu yeCAD uye handigoni kuwana mhinduro. Ndiri kugadzira kureba kusina chinhu kwehemhem, asi software yacho inogara ichida imwe bend allowance. Mushandi wedu wemabhureki akandiudza kuti ndisasiye bend allowance yehemhem, saka ndakaisa software yeCAD pamutengo wakaderera unobvumidzwa (0.008″) - asi ndakanga ndichiri kupera.
Semuenzaniso, ndine simbi isina ngura ye16-ga.304, saizi dzekunze dziri 2″ uye 1.5″, 0.75″. Hem kune kunze. Vatyairi vedu vemabhureki vakaona kuti muripo wekukombama i 0.117 inches. Patinowedzera chiyero nemupendero, tobva tabvisa muripo wekukombama (2 + 1.5 + 0.75 - 0.117), tinowana hurefu hwemasheya hwe 4.132 inches. Zvisinei, kuverenga kwangu kwakandipa hurefu hupfupi (4.018 inches). Nezvose zvataurwa, tingaverenga sei muripo wakatsetseka wemupendero?
A: Kutanga, ngatitsanangure mamwe mazwi mashoma. Wataura nezve bend allowance (BA) asi hauna kutaura nezve bend deduction (BD), ndakaona kuti hauna kuisa BD pama bends ari pakati pe 2.0″ ne 1.5″.aspect.
BA neBD zvakasiyana uye hazvichinjiki, asi kana ukadzishandisa nemazvo, dzese dzinokuendesa kunzvimbo imwe chete. BA idaro rakatenderedza radius rakayerwa pa neutral axis. Wobva wawedzera nhamba iyoyo kuhukuru hwako hwekunze kuti ikupe hurefu hwakati sandara husina chinhu. BD inobviswa kubva pahukuru hwese hwebasa, imwe kona pakona imwe neimwe.
Mufananidzo 1 unoratidza musiyano uripo pakati pezviviri izvi. Ingova nechokwadi chekuti uri kushandisa chaiyo. Cherechedza kuti kukosha kweBA neBD kunogona kusiyana kubva pakukombama kuenda pakukombama, zvichienderana nekona yekukombama uye radius yekupedzisira yemukati.
Kuti uone dambudziko rako, uri kushandisa simbi isina tsvina ine ukobvu hwe 0.060″ ine gobvu re 304″ ine kona imwe chete uye saizi yekunze ye 2.0 ne 1.5″, uye 0.75″. Hem pamucheto. Zvakare, hauna kuisa ruzivo nezve kona yekukombama uye radius yekukombama mukati, asi kuti zvive nyore ndakaverenga mhepo ndichifungidzira kuti wakaita kona yekukombama ye 90 degrees pa 0.472 inches. die. Izvi zvinokupa 0.099 inch. Floating bend radius, yakaverengerwa uchishandisa mutemo we 20%. (Kuti uwane rumwe ruzivo nezvemutemo we 20%, unogona kutarisa "Maitiro Ekufanotaura Zvakarurama Radius Yemukati Yekukombama Kwemhepo" nekunyora zita racho mubhokisi rekutsvaga re thefabricator.com.)
Kana iri 0.062 inches. Punch radius inokombamisa zvinhu neanopfuura 0.472 inches. Kana wangovhura, unenge wasvika 0.099 inches. Uchiyangarara mukati me bend radius, BA yako inofanira kunge iri 0.141 inches, outer backback inofanira kunge iri 0.125 inches, uye bend deduction (BD) inofanira kunge iri 0.107 inches. Unogona kushandisa iyi BD pama bend ari pakati pe 1.5 ne 2.0 inches. (Unogona kuwana BA neBD formulas mukoramu yangu yapfuura, kusanganisira "Basics of Applying Bending Functions.")
Tevere, unofanirwa kuverenga kuti chii chaunoda kubvisa pamupendero. Kana mamiriro ezvinhu akakwana, chinhu chinobviswa pamupendero wakatsetseka kana wakavharwa (zvinhu zviri pasi pe 0.080 inches ukobvu) i43% yeukobvu hwezvinhu. Muchiitiko ichi, kukosha kwacho kunofanira kunge kuri 0.0258 inches. Uchishandisa ruzivo urwu, unofanirwa kukwanisa kuverenga pasina chinhu:
0.017 inches. Musiyano uripo pakati pehuwandu hwenyu hwe flat blank hwe 4.132 inches nehwangu hwe 4.1145 inches unogona kutsanangurwa zviri nyore nekuti hemming inoenderana zvikuru ne operator. Ndinorevei? Zvakanaka, kana operator akarova chikamu chakatsetseka chekukombama zvakanyanya, uchawana flange refu. Kana operator akasarova flange zvakanyanya, flange inozopedzisira yapfupika.
Mubvunzo: Tine nzira yekukombama kwatinogadzira machira esimbi akasiyana-siyana, kubva pa20-ga. Isina Stainless kusvika pa10-ga. Zvinhu zvakaputirwa kare. Tine press brake ine automatic tool adjustment, V-die inogadziriswa pasi uye self-positioned segmented punch pamusoro. Zvinosuwisa kuti, takakanganisa tikaraira punch ine tip radius ye0.063″.
Tiri kushanda kuti urefu hweflange dzedu huenderane muchikamu chekutanga. Zvakataurwa kuti software yedu yeCAD yaishandisa kuverenga kusiri iko, asi kambani yedu yesoftware yakaona dambudziko iri ikati taive zvakanaka. Ichava software yemuchina wekukotamisa here? Kana kuti tiri kufunga zvakanyanya? Ingori BA adjustment yakajairika here kana kuti tinogona kuwana punch itsva ne0.032″ stock.radius rubatsiro? Chero ruzivo kana zano ripi zvaro ringaongwa zvikuru.
A: Ndichatanga ndataura nezvekutaura kwako nezvekutenga punch radius isiriyo. Tichifunga nezverudzi rwemuchina waunawo, ndiri kufunga kuti uri kugadzira mhepo. Izvi zvinoita kuti ndibvunze mibvunzo yakati wandei. Kutanga, paunotumira basa kuchitoro, unoudza mushandi kuti dhizaini yekuvhura chikamu chacho yakagadzirwa pachimiro chipi? Zvinoita mutsauko mukuru.
Kana uchigadzira chikamu chemhepo, radius yekupedzisira yemukati inoumbwa sechikamu chekuvhurwa kwemold. Uyu ndiwo mutemo we20% (ona mubvunzo wekutanga kuti uwane rumwe ruzivo). Kuvhurwa kwediyi kunokanganisa radius yekukombama, iyo inokanganisawo BA neBD. Saka kana kuverenga kwako kuchisanganisira radius yakasiyana inogoneka yekuvhurwa kwediyi pane iyo inoshandiswa nemushandi pamuchina, une dambudziko.
Ngatitii muchina unoshandisa upamhi hwakasiyana pane hwakarongwa. Muchiitiko ichi, muchina uchasvika padanho rakasiyana pane rakarongwa, uchichinja BA neBD, uye pakupedzisira mativi akaumbwa echikamu.
Izvi zvinondisvitsa kune zvawataura nezve punch radius isiriyo.0.063″ kunze kwekunge uri kuedza kuwana imwe inokombama mukati yakasiyana kana diki. Iyo radius inofanira kushanda zvakanaka, ndosaka.
Yera inner bend radius yawawana uye iva nechokwadi chekuti inoenderana ne inner bend radius yakaverengerwa. Punch radius yako haina kururama zvechokwadi here? Zvinoenderana nezvaunoda kuita. Punch radius inofanira kunge yakaenzana kana kuti iri pasi pefloating inner bend radius. Kana punch radius yakakura kupfuura natural floating bend radius pane die open yakapihwa, chikamu chichatora punch radius. Izvi zvichachinja zvakare inner bend radius uye kukosha kwawakaverenga kweBA neBD.
Kune rumwe rutivi, haudi kushandisa punch radius diki kwazvo, iyo inogona kurodza kona uye kukonzera mamwe matambudziko akawanda. (Kuti uwane rumwe ruzivo nezveizvi, ona "Maitiro Ekudzivirira Kutendeuka Kwakapinza.")
Kunze kwezvinhu zviviri izvi zvakanyanyisa, punch muchimiro chemhepo haisi chinhu kunze kwe push unit uye haikanganisi BD neBA. Zvakare, bend radius inoratidzwa sechikamu chekuvhura kwe die, yakaverengerwa uchishandisa mutemo we20%. Zvakare, iva nechokwadi chekushandisa mazwi nemitengo yeBA neBD nemazvo, sezvakaratidzwa muMufananidzo 1.
Mubvunzo: Ndiri kuedza kuverenga simba guru repadivi rekushandisa hemming tool kuti ndive nechokwadi chekuti vashandi vedu vakachengeteka panguva yehemming process. Une mazano ekundibatsira kuwana izvi here?
Mhinduro: Simba repadivi kana kuti kusundidzira kwepadivi kwakaoma kuyera uye kuverenga kuti mupendero webhureki rekudzvanya unopwanyika sei uye kazhinji hazvidiwi. Njodzi chaiyo ndeyekudzvanya bhureki rekudzvanya woparadza punch nebed yemuchina. Ram nebed zvinopidigurwa zvichiita kuti chimwe nechimwe chikotame zvachose.
Mufananidzo 2. Maplate ekuisa paseti yemaflatening dies anoita kuti zvishandiso zvepamusoro nepazasi zvisafambe zvakasiyana.
Brake rekudzvanya rinowanzo tendeuka pasi pemutoro uye rinodzokera panzvimbo yaro yekutanga yakati sandara kana mutoro wabviswa. Asi kupfuudza muganho wemutoro wemabhureki kunogona kukotama zvikamu zvemuchina kusvika pazvisingachadzokeri panzvimbo yakati sandara. Izvi zvinogona kukuvadza zvachose brake rekudzvanya. Saka, iva nechokwadi chekufunga nezvemabasa ako ekupinza tambo mukuverenga toni. (Kuti uwane rumwe ruzivo nezveizvi, unogona kutarisa "Nzvimbo ina dzetoni yetoni yebhureki rekudzvanya.")
Kana flange inofanira kupfurwa yakareba zvakakwana kuti ipfuure, kupfurwa kweparutivi kunofanira kunge kushoma. Zvisinei, kana ukaona kuti kupfurwa kweparutivi kuchiita sekunge kwakanyanyisa uye uchida kuderedza kufamba nekutenderedza kwemod, unogona kuwedzera maplate ekupfurwa kumod. Purse plate haisi chinhu kunze kwesimbi yakakora yakawedzerwa kune chishandiso chepasi, ichitambanukira kumusoro kupfuura chishandiso chepamusoro. Purse plate inoderedza mhedzisiro yekupfurwa kweparutivi uye inoita kuti zvishandiso zvepamusoro nezvepasi zvisafambe nenzira dzakasiyana (ona Mufananidzo 2).
Sezvandakataura pakutanga kwechikamu chino, mibvunzo yakawanda uye nguva yekuipindura yese haikwane. Ndatenda nemoyo murefu wenyu kana makanditumira mibvunzo nguva pfupi yadarika.
Chero zvazvingava, mibvunzo ngairambe ichibuda. Ndichaipindura nekukurumidza sezvinobvira. Kusvika panguva iyoyo, ndinotarisira kuti mhinduro dziri pano dzichabatsira avo vakabvunza mubvunzo uyu nevamwe vari kusangana nematambudziko akafanana.
Fungidzira zvakavanzika zvekushandisa press brake mumusangano uyu wemazuva maviri wakaoma kubva Nyamavhuvhu 8 kusvika 9 nemudzidzisi Steve Benson kuti akudzidzise dzidziso nemasvomhu zviri shure kwemuchina wako. Uchadzidza misimboti iri shure kwekukombama kwesimbi yemhando yepamusoro kuburikidza nemirairo inodyidzana uye matambudziko ebasa remuenzaniso mukati mekosi yese. Kuburikidza nemabasa ari nyore kunzwisisa, uchadzidza hunyanzvi hunodiwa kuti uverenge maburitsirwo akarurama ekukombama, kusarudza chishandiso chakanakisa chebasa, uye kusarudza V-die open chaiyo kudzivirira kukanganisa kwezvikamu. Enda peji rechiitiko kuti udzidze zvakawanda.
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