Ka ho potlakisa ho tsoelang pele ha ntlafatso le nts'etsopele ea theknoloji ea indasteri, mokhoa oa tlhahiso ea mochini o nkile sebaka sa tlhahiso ea matsoho butle-butle mafapheng a mang a tlhahiso, haholo indastering ea tlhahiso.Ka lebaka la tikoloho e khethehileng ea tšebeliso ea likarolo tse ling tsa bohlokoa, tse kang mocheso o phahameng le khatello e phahameng, e le ho netefatsa botsitso ba likarolo, boleng ba likarolo bo lokela ho finyella litekanyetso tse loketseng, tse hlahisang litlhoko tse phahameng tsa boleng ba machining.Boleng ba machining haholo-holo bo entsoe ka likarolo tse peli: ho nepahala ha machining le boleng bo holimo ba machining.Ke feela ka ho laola ka thata lihokelo tse peli tsa bohlokoa tsa machining, boleng ba machining bo ka laoloa hantle mme boleng ba lihlahisoa tsa mochini bo fihla maemong a ts'ebeliso.
1. Tlhaloso ea boleng ba machining
Boleng ba machining haholo-holo bo kenyelletsa likarolo tse peli: ho nepahala ha machining le boleng bo holimo ba machining, bo angoang ke boleng ba geometry le thepa ka ho latellana.
1.1 boleng ba geometry ts'ebetsong ea machining, boleng ba geometry bo tla ama ho nepahala ha machining.Boleng ba thutatekanyo bo bolela phoso ya thutatekanyo pakeng tsa bokahodimo ba sehlahiswa le sehokelo nakong ya machining.Haholo-holo e kenyelletsa likarolo tse peli: phoso ea macro geometry le phoso ea geometry ea micro.Ka kakaretso, karo-karolelano pakeng tsa bophahamo ba maqhubu le leqhubu la phoso ea macro geometry e phahame ho feta 1000. Ka kakaretso, karo-karolelano ea bophahamo ba maqhubu ho ea ho leqhubu le ka tlase ho 50.
1.2 boleng ba lisebelisoa ho machining, boleng ba thepa bo bua ka liphetoho lipakeng tsa boleng ba thepa ea 'mele e amehang karolong e kaholimo ea lihlahisoa tsa mochini le matrix, e tsejoang hape e le lera la phetoho.Ha ho etsoa machining, boleng ba thepa bo tla ama boleng ba bokaholimo, bo bonts'ang haholo-holo mosebetsing oa ho thatafala ha lera le ho fetoha ha metallographic ea lera la holim'a metsi.Har'a bona, ho thatafala ha mosebetsi oa lera holim'a metsi ho bolela ho eketseha ha boima ba tšepe ea bokaholimo ba lihlahisoa tsa mochini ka lebaka la deformation ea polasetiki le ho thella lipakeng tsa lijo-thollo nakong ea machining.Ka kakaretso, lintlha tse tharo li hloka ho nahanoa tlhahlobong ea boima ba machining ba lihlahisoa tsa mochini, e leng, ho thatafala ha tšepe ea holim'a metsi, botebo bo thata le tekanyo ea ho thatafala.Phetoho ea sebopeho sa metallographic ea lera la bokaholimo e bolela phetoho ea sebopeho sa metallographic ea tšepe ea holim'a lihlahisoa tsa mochini ka lebaka la ketso ea ho khaola mocheso ka machining.
2. Lintho tse susumetsang tsa boleng ba machining
Ts'ebetsong ea machining, mathata a boleng ba machining haholo-holo a kenyelletsa ho itšeha bokaholimo le ho sila holimo.Ka kakaretso, lintlha tse amang boleng ba machining li ka aroloa ka likarolo tse peli: lintlha tsa geometri le lintlha tsa 'mele.
2.1 ho itšeha ka holimo ho machining, bothata ba boleng ba ho itšeha ka holimo bo kenyelletsa lintlha tse peli: lintlha tsa geometri le lintlha tsa 'mele.Har'a tsona, lintlha tsa geometri li kenyelletsa karolo e ka sehloohong ea ho kheloha, sekhahla sa sub deflection, ho itšeha lijo joalo-joalo, ha lintlha tsa 'mele li kenyelletsa lisebelisoa tsa workpiece, lebelo la ho itšeha, fepa joalo-joalo.Ha ho etsoa machining, lisebelisoa tsa ductile li sebelisoa bakeng sa ts'ebetso ea li-workpiece, polasetiki ea tšepe ea lisebelisoa e na le tšekamelo ea ho senyeha, 'me sebaka se entsoeng ka mochine se tla ba thata.Ka hona, e le ho fokotsa ho roughness holim'a le ho ntlafatsa tshebetso seha ha o sebelisa seaplane tšepe tšepe le tlaase carbon tšepe workpiece thepa le toughness e ntle, ho ke ke ka kakaretso ho hlokahala hore ho phetha quenching le tempering kalafo pakeng tsa ho qeta.
Ha ho etsoa lisebelisoa tsa polasetiki, lebelo la ho itšeha le tla ba le tšusumetso e kholo holim'a mahlahahlaha a holim'a mochini.Ha lebelo la ho itšeha le fihla boemong bo itseng, monyetla oa hore deformation ea polasetiki ea tšepe e fokotsehe, 'me boima ba bokaholimo bo boetse bo fokola.
Ha u laola li-parameter tsa ho itšeha, ho fokotsa phepelo ho ka fokotsa ho ba teng ha bokaholimo ho isa tekanyong e itseng.Leha ho le joalo, haeba sekhahla sa phepelo se le senyenyane haholo, ho ba le boima bo ka holimo ho tla eketseha;Ke feela ka ho laola sekhahla sa phepelo ka mokhoa o utloahalang ho ka fokotsoang holimo.
2.2 ho sila ka holim'a metsi ha ho etsoa machining, sebaka sa ho sila se bakoa ke scoring ea lijo-thollo tse hlabang holim'a lebili la ho sila.Ka kakaretso, haeba lijo-thollo tse ngata tsa lehlabathe li feta sebakeng sa yuniti ea workpiece, li-scratches tse ngata holim'a workpiece, le contour ea li-scratches holim'a workpiece e ama bokaholimo ba ho sila.Haeba contour ea notch holim'a workpiece e ntle, bokaholimo ba ho sila bo tla ba tlase.Ho phaella moo, lintlha tsa 'mele tse amang ho lla holimo ho sila ke litekanyo tsa ho sila joalo-joalo.Ha ho etsoa machining, lebelo la lebili la sila le tla ama lebili la ho sila, athe lebelo la workpiece le na le phello e fapaneng holim'a ho sila holimo.Ka lebelo le lebelo la ho sila lebili, ho na le palo e kholo ea likaroloana tsa abrasive ka sebaka sa yuniti ea workpiece ka nako ea yuniti, 'me ho fokotseha hoa bokaholimo.Ha ho bapisoa le lebelo la ho sila lebili, haeba lebelo la workpiece e ba ka potlako, palo ea lijo-thollo abrasive feta ka holim'a machined workpiece ka united nako e tla ba ka tlaase ho moo, 'me holim'a roughness tla eketseha.Ho phaella moo, ha tekanyo ea phepelo ea longitudinal ea lebili la ho sila e le nyenyane ho feta bophara ba lebili la ho sila, bokaholimo ba workpiece bo tla khaoloa khafetsa, ho thatafala ha workpiece ho tla eketseha, 'me ho hlaka ha sefahleho ho tla fokotseha.
Nako ea poso: May-24-2021