Basic Magnet Dhizaini
Muchina weMagnabend wakagadzirwa seine simba DC magineti ine shoma yebasa kutenderera.
Muchina uyu une zvikamu zvitatu zvakakosha: -
Iyo magnet body inoumba hwaro hwemuchina uye ine electro-magineti coil.
Iyo clamp bar inopa nzira yemagnetic flux pakati pematanda egineti base, uye nekudaro inosunga iyo sheetmetal workpiece.
Iro danda rekukotama iro rakapinzwa kumucheto kumberi kwemuviri wemagineti uye rinopa nzira yekushandisa simba rekukotama kune workpiece.
3-D Model:
Pazasi pane 3-D dhizaini inoratidza kurongeka kwezvikamu muU-mhando magineti:
Duty Cycle
Pfungwa yebasa kutenderera chinhu chakakosha zvikuru chekugadzirwa kweiyo electromagnet.Kana iyo dhizaini ichipa yakawanda yebasa kutenderera pane inodiwa saka haina optimum.Kuwedzera basa kutenderera kunoreva kuti waya yemhangura yakawanda ichadiwa (zvichizokonzera mutengo wakakwira) uye/kana kuchave nesimba shoma rekusunga riripo.
Ongorora: Iyo yakakwira duty cycle magineti ichave nekushomeka kwemagetsi izvo zvinoreva kuti ichashandisa shoma simba uye nekudaro ichave yakachipa kushanda.Nekudaro, nekuda kwekuti magineti AKAVANYA kwenguva pfupi chete saka mutengo wesimba rekushanda unowanzoonekwa seusina kukosha.Nokudaro nzira yekugadzira ndeyokuva nekuparara kwesimba rakawanda sezvaunogona kuwana kure maererano nekusapisa kupisa kwemhepo yekoil.(Iyi nzira yakajairika kune akawanda emagetsi madhizaini).
Iyo Magnabend yakagadzirirwa zita rekuita kutenderera kweinenge 25%.
Kazhinji zvinongotora 2 kana 3 masekonzi kuita bend.Iyo magineti ichabva yadzimwa kweimwe 8 kusvika ku10 masekonzi apo workpiece inoiswa patsva uye yakarongeka yakagadzirira kubhenda kunotevera.Kana iyo 25% yebasa kutenderera ikapfuudzwa ipapo kupedzisira magineti ichanyanya kupisa uye kupisa kwakawandisa kunofamba.Iyo magineti haizokanganiswe asi ichafanirwa kubvumidzwa kutonhora kweanenge maminetsi makumi matatu isati yashandiswa zvakare.
Chiitiko chekushanda nemichina mumunda chakaratidza kuti iyo 25% yebasa denderedzwa yakanyatsokwana kune vakajairwa vashandisi.Asi izvo vamwe vashandisi vakakumbira sarudzo yemhando yepamusoro yemagetsi emuchina ane simba rekurovera pamutengo wekuita kushoma kutenderera.
Magnabend Clamping Force:
Practical Clamping Force:
Mukuita iyi yakakwira clamping simba inongoonekwa chete kana isiri kudikanwa (!), ndipo pakukotama simbi dzakatetepa workpieces.Kana uchikotama maworkpieces asiri-ferrous simba richava shoma sezvakaratidzwa mugirafu riri pamusoro, uye (zvishoma zvinoshamisa), zvakare zvishoma kana uchikotama simbi dzakakora workpieces.Izvi zvinodaro nekuti simba rekusunga rinodiwa kugadzira kukona kwakakwira zvakanyanya kupfuura rinodiwa pakubhenda kweradius.Saka zvinoitika ndezvekuti sezvo bend ichienderera mberi kumucheto kwe clampbar inosimudza zvishoma zvichibvumira workpiece kuumba radius.
Kamukana kadiki kemhepo kanoumbwa kanokonzera kurasikirwa kudiki kwesimba rekusunga asi simba rinodiwa kugadzira radius bend radonha zvakanyanya kupfuura simba rekurovera magineti.Saka mamiriro akagadzikana anoguma uye clampbar hairegi kuenda.
Izvo zvinotsanangurwa pamusoro apa maitiro ekupeta kana muchina wava pedyo nemuganhu wawo.Kana yakatonyanya kukora workpiece ikaedzwa saka hongu iyo clampbar inosimuka.
Dhiagiramu iyi inoratidza kuti kana mupendero wemhino we clampbar wakaiswa radius zvishoma, pane kupinza, ipapo gaka remhepo rekukotama gobvu raizoderedzwa.
Hongu ndizvo zvazviri uye Magnabend yakanyatsogadzirwa ichave ine clampbar ine radiused mupendero.(Mupendero wakaiswa mupendero zvakare haunyanyi kukuvadzwa netsaona kana uchienzaniswa neyakapinza).
Marginal Mode yeBend Kukundikana:
Kana bend rikayedzwa pane yakakora kwazvo workpiece saka muchina unotadza kuipeta nekuti iyo clampbar inongosimuka.(Neraki izvi hazviitike nenzira inoshamisa; iyo clampbar inongoenda chinyararire).
Nekudaro kana iyo yekukotama mutoro wakangokura zvishoma pane kupeta kwesimba remagineti saka kazhinji zvinoitika ndezvekuti bend inoenderera ichitaura nezve 60 madhigirii uye ipapo clampbar inotanga kutsvedza kumashure.Mune iyi modhi yekutadza magineti anogona chete kuramba kubhenda mutoro zvisina kunanga nekugadzira kupesana pakati pechishandiso chebasa nemubhedha wemagineti.
Musiyano weukobvu pakati pekutadza nekuda kwekusimudza uye kutadza nekuda kwekutsvedza kazhinji hauna kunyanya kuwanda.
Kusimudza-kutadza kukonzerwa neiyo workpiece inotsvedza kumberi kweiyo clampbar kumusoro.Simba rekurovera kumucheto kwemberi kwe clampbar ndiro rinoramba izvi.Kurovera kumucheto kumashure hakuna zvakunoita nekuti iri padyo neparikupinzwa clampbar.Kutaura zvazviri inongova hafu yesimba rose rekusunga rinoramba kusimudzwa.
Ukuwo kutsvedza kunopikiswa nechisimba chose chekusunga asi kuburikidza nekukwesha chete saka kuramba chaiko kunoenderana nekofivha yekukweshana pakati pechishandiso nepamusoro pemagineti.
Pasimbi yakachena uye yakaoma friction coefficient inogona kusvika 0.8 asi kana lubrication iripo saka inogona kunge yakaderera se0.2.Kazhinji ichave iri pakati pekuti iyo marginal mode yekutadza kubhenda kazhinji nekuda kwekutsvedza, asi kuedza kuwedzera kukweshera pamusoro pemagineti kwakawanikwa kusina kukosha.
Hukobvu Kukwanisa:
Kune E-mhando yemagineti muviri 98mm yakafara uye 48mm kudzika uye ine 3,800 ampere-turn coil, hurefu hwakazara hwekukotama kugona i1.6mm.Ukobvu uhwu hunoshanda kune ese simbi sheet uye aluminium sheet.Pachave nekushomeka kwekusungirira paaruminiyamu pepa asi inoda kushoma torque kuti ikotame saka izvi zvinoripa nenzira yekupa yakafanana geji kugona kune ese marudzi ese esimbi.
Panofanirwa kuve neamwe macaveats pane yakataurwa yekukotama kugona: Iyo huru ndeyekuti goho resimbi simbi rinogona kusiyana zvakanyanya.Iyo 1.6mm kugona inoshanda kune simbi ine goho redhisheni inosvika 250 MPa uye kune aruminiyamu ine goho redhisheni inosvika 140 MPa.
Ukobvu hunokwanisa musimbi isina tsvina hunosvika 1.0mm.Hunhu uhwu hwakanyanya kushoma pane kune dzimwe simbi zhinji nekuti simbi isina simbi inowanzova isiri-magnetic uye zvakadaro ine goho rakanyanya kushushikana.
Chimwe chinhu kupisa kwemagineti.Kana iyo magineti yakatenderwa kupisa saka kupokana kwecoil kunenge kwakakwira uye izvi zvinozoita kuti idhonze ishoma ikozvino neinotevera yakaderera ampere-inotendeuka uye yakaderera clamping simba.(Izvi zvinowanzoitika zvine mwero uye hazvigone kuita kuti muchina usangane nezvaunoreva).
Chekupedzisira, gobvu hukuru Magnabends anogona kuitwa kana iyo magineti muchinjiko chikamu chakaitwa chikuru.
Nguva yekutumira: Aug-27-2021