MAGNABEND UMLANDO WOKUTHUTHUKISA KANYE NOKWENZIWA
UGenesise Wombono:
Emuva ngo-1974 kwakudingeka ngenze amabhokisi ezakhiwo zikagesi.Ukuze ngenze lokhu ngazenzela ifolda ye-sheetmetal engahluziwe kakhulu ngezingcezu ezimbalwa ze-engeli yensimbi ehlanganiswe ndawonye futhi ibanjwe ku-vice.Ukusho okuncane bekungelula kakhulu ukusebenzisa futhi akuguquki kakhulu.Ngokushesha nganquma ukuthi kwase kuyisikhathi sokwenza okuthile okungcono.
Ngakho ngacabanga ngendlela yokwenza ifolda 'efanele'.Into eyodwa eyayingikhathaza ukuthi i-clamping structure kwakudingeka iboshwe emuva esisekelweni somshini noma ekugcineni noma ngemuva futhi lokhu kwakuzophazamisa ezinye zezinto engangifuna ukuzenza.Ngakho ngenza ukweqa ukholo futhi ngathi ...KULUNGILE, masingabophi isakhiwo sokubopha esisekelweni, ngingakwenza kanjani lokho?
Ingabe ibikhona indlela yokunqamula lokho kuxhumana?
Ungakwazi yini ukubambelela entweni ngaphandle kokunamathisela okuthile kuyo?
Lowo kwakubonakala kuwumbuzo onobuphukuphuku okufanele ngiwubuze kodwa lapho sengiwuhlaka lo mbuzo ngaleyo ndlela ngathola impendulo okungenzeka ukuthi:-
Ungathonya izinto ngaphandle kokuxhumana ngokomzimba kuzo ... nge-FIELD!
Ngangazi ngamasimu kagesi*, amandla adonsela phansi*, nezizibuthe*.Kodwa ingabe kungenzeka?Ingabe izosebenza ngempela?
(* Uma eceleni kuyathakazelisa ukuphawula ukuthi isayensi yesimanje isazochaza ngokugcwele ukuthi "i-force at a distance" isebenza kanjani ngempela).
Okwenzeka ngokulandelayo kuseyinkumbulo ecacile.
Ngangiseshabhu lami lasekhaya futhi kwakungemva kwamabili kanye nesikhathi sokulala, kodwa angikwazanga ukumelana nesilingo sokuzama lombono omusha.
Ngokushesha ngathola uzibuthe wesicathulo sehhashi nocezu lwethusi olucwebezelayo.Ngafaka i-shim brass phakathi kukazibuthe 'nomgcini' wayo ngagobisa ithusi ngomunwe wami!
Eureka!Kwasebenza.Ithusi lalingu-0.09mm kuphela kodwa umgomo wasungulwa!
(Isithombe esingakwesokunxele siwukwakhiwa kabusha kokuhlolwa kwasekuqaleni kodwa sisebenzisa izingxenye ezifanayo).
Ngajabula ngoba ngabona, zisuka nje, ukuthi uma umbono ungenziwa usebenze ngendlela engokoqobo, wawuzomela umqondo omusha endleleni yokwenza i-sheetmetal.
Ngosuku olulandelayo ngatshela engisebenza naye, uTony Grainger, ngemibono yami.Naye wayejabule kancane futhi wangidwebela idizayini okungenzeka ibe yizibuthe kagesi.Wenza nezibalo ezithile mayelana nokuthi hlobo luni lwamandla olungatholakala kuzibuthe kagesi.UTony wayengumuntu ohlakaniphe kunabo bonke engangimazi futhi ngaba nenhlanhla yokuba naye njengozakwethu futhi ngikwazi nokufinyelela kulwazi lwakhe olukhulu.
Ekuqaleni bekubukeka sengathi umbono uzosebenza kuphela kumageji amancane e-sheetmetal kodwa wawuthembisa ngokwanele ukungikhuthaza ukuthi ngiqhubeke.
Ukuthuthukiswa Kwangaphambi kwesikhathi:
Ezinsukwini ezimbalwa ezalandela ngathola izingcezu zensimbi, intambo yethusi, nesilungisisi futhi ngakha ifolda yami yokuqala ye-electro-magnetic!Ngisenayo endaweni yami yokusebenzela:
Ingxenye kazibuthe kagesi yalo mshini ingeyoqobo yangempela.
(Isigxobo esingaphambili nogongolo olukhonjiswe lapha kwaba izinguquko kamuva).
Nakuba kunalokho ongahluziwe lo mshini wasebenza!
Njengoba kucatshangwa ngesikhathi sami sokuqala se-eureka, ngempela ibha yokunamathisela bekungadingeki ukuthi ixhunywe esisekelweni somshini ekugcineni, ngemuva, noma kuphi.Ngakho-ke umshini wawuvuleke ngokuphelele futhi uvulekile.
Kodwa isici esivulekile singabonakala kuphela uma amahinge ogongolo ogobayo nawo ayengajwayelekile.
Ezinyangeni ezizayo ngisebenze ohlotsheni lwehinge engalubiza nge-'cup-hinge', ngakha umshini osebenza kangcono (Mark II), ngafaka I-Provisional Patent Specification ne-Australian Patent Office futhi ngavela futhi uhlelo lwethelevishini lwe-ABC olubizwa ngokuthi "The Inventors".Engangisungula ngakhethwa njengomnqobi walelo sonto futhi ngokuhamba kwesikhathi kwaqhubeka nokukhethwa njengomunye wabaphumelele kulowo nyaka (1975).
Kwesokunxele i-Mark II bender njengoba kukhonjisiwe eSydney kulandela ukubonakala kowamanqamu we-The Inventors.
Isebenzise inguqulo ethuthuke kakhulu 'yehinge yenkomishi' njengoba kukhonjisiwe ngezansi:
Ngo-1975 ngahlangana noGeoff Fenton emhlanganweni we-Inventors Association eHobart (3 Agasti 1975).U-Geoff wayenentshisekelo enkulu ekusungulweni kwe-"Magnabend" futhi wabuyela endaweni yami ngemva komhlangano ukuze akubhekisise.Lokhu kwakuzoba isiqalo sobungani obuhlala njalo noGeoff futhi kamuva ubudlelwano bebhizinisi.
UGeoff wayeneziqu zobuNjiniyela futhi engumsunguli ohlakaniphe kakhulu ngokwakhe.Wakubona kalula ukubaluleka kokuba ne-hinge design ezovumela umshini ukuthi ubone amandla awo agcwele.
'Ihinge yenkomishi' yami isebenzile kodwa yaba nezinkinga ezingathi sína zama-engeli e-beam angaphezu kuka-90 degrees.
UGeoff waba nesithakazelo esikhulu kumahinji angenasisekelo.Lesi sigaba sehinge singahlinzeka ngokuzungeza endaweni ebonakalayo engaba ngaphandle ngokuphelele komshini wamahinji ngokwawo.
Ngolunye usuku (1 Feb 1976) uGeoff waqhamuka nomdwebo wehinge ebukekayo engajwayelekile futhi enobuhlakani obusha.Ngamangala!Ngangingakaze ngiyibone into efana nayo ukude!
(Bheka umdwebo kwesokunxele).
Ngifunde ukuthi lena indlela ye-pantograph eguquliwe ehlanganisa ukuxhumana kwamabha ama-4.Asikaze senze inguqulo efanele yale hinge kodwa ezinyangeni ezimbalwa kamuva uGeoff weza nenguqulo ethuthukisiwe esiyenzile.
Ingxenye ephambene yenguqulo ethuthukisiwe iboniswa ngezansi:
'Izingalo' zale hinge zigcinwa zihambisana namalungu ahamba phambili ngama-crank amancane.Lokhu kungabonakala ezithombeni ezingezansi.Ama-crank kufanele athathe iphesenti elincane kuphela lomthwalo wehinge usuwonke.
Ukulingiswa kwalo mshini kuboniswa kuvidiyo engezansi.(Siyabonga kuDennis Aspo ngalokhu kulingiswa).
https://youtu.be/wKxGH8nq-tM
Yize lo mshini wehinge usebenze kahle, awuzange ufakwe emshinini wangempela weMagnabend.Ukuhlehla kwayo kwakuwukuthi ayizange inikeze ukujikeleza okugcwele kwe-180 degree of the beam egobayo futhi kubonakala sengathi inezingxenye eziningi kuyo (yize izingxenye eziningi zazifana nomunye nomunye).
Esinye isizathu esenza le hinge ingasetshenziswa yingoba uGeoff wabe eseqhamuka neyakhe:
I-Triaxial Hinge:
Ihinge le-triaxial linikeze amadigri angu-180 agcwele okuzungezisa futhi lalilula njengoba lalidinga izingxenye ezimbalwa, nakuba izingxenye ngokwazo zaziyinkimbinkimbi kakhulu.
Ihinge le-triaxial liqhubekele phambili ezigabeni ezimbalwa ngaphambi kokufinyelela kumklamo ozinzile.Sibize izinhlobo ezahlukene ngokuthi I-Trunnion Hinge, I-Spherical Internal Hinge kanye ne-Spherical External Hinge.
Ihinge yangaphandle eyindilinga ilingisiwe kuvidiyo engezansi (Siyabonga ku-Jayson Wallis ngalokhu kulingisa):
https://youtu.be/t0yL4qIwyYU
Yonke le miklamo ichazwe kudokhumenti ye-US Patent Specification.(PDF).
Enye yezinkinga ezinkulu ngehinge ye-Magnabend ukuthi kwakungekho ndawo yokuyibeka!
Iziphetho zomshini ziphumile ngoba sifuna ukuthi umshini uvuleke, ngakho kufanele uye kwenye indawo.Asikho ngempela isikhala phakathi kobuso bangaphakathi bogodo olugobayo kanye nobuso bangaphandle besigxobo esingaphambili sikazibuthe.
Ukwenza indawo singakwazi ukuhlinzeka ngezindebe onqenqemeni olugobayo nasesigxotsheni esingaphambili kodwa lezi zindebe zilimaza amandla ogongolo olugobayo namandla okubamba uzibuthe.(Ungabona lezi zindebe ezithombeni ze-pantograph hinge ngenhla).
Ngakho-ke umklamo we-hinge uvinjelwe phakathi kwesidingo sokuba mncane ukuze kudingeke izindebe ezincane kuphela kanye nesidingo sokuqina ukuze sibe namandla ngokwanele.Futhi nesidingo sokungabi nendawo ukuze unikeze i-pivot ebonakalayo, okungcono kakhulu ngaphezu kwendawo yokusebenza kukazibuthe.
Lezi zidingo zaba ukuhleleka okude kakhulu, kodwa idizayini esunguliwe ka-Geoff yabhekana nezidingo kahle, nakuba umsebenzi omningi wokuthuthukisa (owawenziwa okungenani iminyaka eyi-10) wawudingeka ukuze kutholwe ukuvumelana okungcono kakhulu.
Uma ngiceliwe ngingabhala indatshana ehlukile kumahinge nokuthuthuka kwawo kodwa okwamanje sizobuyela emlandweni:
Izivumelwano Zelayisense Yokukhiqiza-Ngaphansi:
Eminyakeni ezayo sisayine izivumelwano eziningi "Zokukhiqiza-Ngaphansi Kwelayisense":
6 February 1976: Nova Machinery Pty Ltd, Osborne Park, Perth Western Australia.
31 Disemba 1982: Thalmann Constructions AG, Frauenfeld, Switzerland.
12 Okthoba 1983: Roper Whitney Co, Rockford, Illinois, USA.
Disemba 1, 1983: I-Jorg Machine Factory, e-Amersfoort, e-Holland
(Umlando owengeziwe uma ucelwe yinoma iyiphi inhlangano enentshisekelo).