Vanogona kutenga michina mitsva yekukuya vanofanira kunzwisisa ins and outs of the abrasive process, mashandire anoita abrasive bond, nemhando dzakasiyana dzemavhiri ekugaya.
Iyi blog positi yakagadziridzwa kubva kuchinyorwa chakaburitswa naBarry Rogers munaNovember 2018 chinyorwa cheMuchina / Chitoro chekuwedzera cheMazuvano Machine Shop magazine.
Muchinyorwa chekupedzisira pamusoro pechinyorwa chezvikuyo, takakurukura kukwezva kwekutanga kwezvigayo uye kuti zvinovakwa sei.Ikozvino, isu tinotarisa zvakanyanya kuti iyo abrasive process inoshanda sei uye zvazvinoreva kune vatengesi vemichina mitsva pamusika.
Kukuya iabrasive processing tekinoroji inoshandisa vhiri rekukuya semudziyo wekucheka.Gumbo rekukuya rine zvimedu zvakaoma, zvakapinza.Kana vhiri richitenderera, chidimbu chega chega chinoita senge chimbo chekucheka-chete.
Mavhiri ekukuya anowanikwa akasiyana siyana, madhayamita, ukobvu, abrasive saizi yezviyo uye mabhainda.Mabrasives anoyerwa muzvikamu zvehukuru hwechidimbu kana saizi diki, ine particle size inotangira pa8-24 (yakakora), 30-60 (pakati), 70-180 (yakanaka) uye 220-1,200 (yakanyanya kunaka).Iwo magiredhi akaomesesa anoshandiswa apo huwandu hwakati wandei hwezvinhu hunofanira kubviswa.Kazhinji, giredhi rakakwenenzverwa rinoshandiswa mushure megiredhi rakaomarara kugadzira kupera kwepamusoro kwakatsetseka.
Gumbo rekukuya rinogadzirwa nemhando dzakasiyana-siyana dzeabrasives, kusanganisira silicon carbide (inowanzo shandiswa kune simbi isina-ferrous);alumina (inoshandiswa kune yakakwirira-simba masimbi alloys nehuni; madhaimondi (anoshandiswa kugadzirwa kweceramic kana kupukuta kwekupedzisira); uye cubic boron nitride (inowanzo shandiswa Steel alloy).
Abrasives inogona kuverengerwa zvakare seyakasungwa, yakavharwa kana simbi yakasungwa.Iyo yakagadziriswa abrasive inosanganiswa neabrasive zviyo uye binder, uye zvino inomanikidzwa muchimiro chevhiri.Vanodzingwa patembiricha yepamusoro kuti vagadzire girazi-senge matrix, inowanzozivikanwa se vitrified abrasives.Mabrasives akavharidzirwa anogadzirwa nemhodzi dzinoputika dzakasungirirwa kune inochinjika substrate (senge bepa kana faibha) ine resin uye/kana guruu.Iyi nzira inonyanya kushandiswa kugadzira mabhandi, mashizha, uye petals.Metal bonded abrasives, kunyanya madhaimondi, anogadzikwa musimbi matrix nenzira yekunyatso kugaya mavhiri.Iyo simbi matrix yakagadzirirwa kupfeka kufumura midhiya yekukuya.
Iyo yekubatanidza zvinhu kana yepakati inogadzirisa abrasive muvhiri rekukuya uye inopa simba rakawanda.Voids kana pores anosiiwa nemaune mumavhiri kuti awedzere kutonhorera kuburitsa uye kuburitsa machipisi.Zvichienderana nekushandiswa kwegumbo rekukuya uye rudzi rweabrasive, mamwe mazadza anogona kuiswa.Mabhondi anowanzo kurondedzerwa se organic, vitrified kana metallic.Rudzi rumwe norumwe runopa mabhenefiti-chaiwo mabhenefiti.
Organic kana resin adhesives anogona kumirisana nehutsinye hwekukuya mamiriro, senge vibration uye yakakwirira lateral masimba.Organic binders inonyanya kukodzera kuwedzera kuwanda kwekucheka mune rough machining application, senge simbi yekupfeka kana abrasive cutting operations.Aya masanganiswa anobatsirawo pakugayiwa chaiko kwezvinhu zvakaomesesa (sedhaimondi kana ceramics).
Mukukuya chaiko kwesimbi yesimbi (senge simbi yakaoma kana nickel-based alloys), iyo ceramic bond inogona kupa yakanakisa kupfeka uye yemahara yekucheka kuita.Iyo ceramic bond yakanyatso kugadzirirwa kupa yakasimba adhesion kune cubic boron nitride (cBN) zvimedu kuburikidza nemakemikari reaction, zvichikonzera chiyero chakanakisa chekucheka vhoriyamu kusvika kumavhiri kupfeka.
Metal makiyi ane yakanakisa kupfeka kuramba uye kuchengetedza chimiro.Ivo vanogona kubva kune imwechete-layer electroplated zvigadzirwa kusvika kune multilayer mavhiri anogona kugadzirwa akasimba uye akakora.Metal bonded mavhiri anogona kunge akaoma zvikuru kupfeka zvinobudirira.Zvisinei, rudzi rutsva rwekukuya vhiri rine brittle metal bond rinogona kupfekedzwa nenzira yakafanana neceramic grinding vhiri uye ine imwechete inobatsira yekusununguka-kucheka maitiro ekukuya.
Munguva yekukuya, gumbo rinokuya rinopera, rigove rakasviba, rinorasikirwa nechimiro charo kana "mutoro" nekuda kwemachipisi kana machipisi anonamatira kune abrasive.Zvadaro, vhiri rekukuya rinotanga kukwesha workpiece panzvimbo yekucheka.Mamiriro ezvinhu aya anogadzira kupisa uye anoderedza kushanda kwemavhiri.Kana mutoro wevhiri ukawedzera, kutaura kunoitika, izvo zvinokanganisa kupera kwepamusoro kwechishandiso.Nguva yekutenderera ichawedzera.Panguva ino, gumbo rekukuya rinofanira "kupfekedzwa" kurodza vhiri rekukuya, nokudaro kubvisa chero chinhu chakasara pamusoro pegumbo rekukuya uye kudzorera vhiri rekukuya kune chimiro chayo chepakutanga, uchiunza zvitsva zvinoputika pamusoro.
Mhando dzakawanda dzekukuya mavhiri madhirezi anoshandiswa pakukuya.Inonyanya kuzivikanwa ndeye-single-point, static, onboard diamond dresser, iyo inowanikwa mubhuroko, kazhinji pamusoro kana tailstock yemuchina.Kumusoro kwegumbo rekukuya kunopfuura nepaiyi dhaimondi imwe chete, uye chidimbu chidiki chevhiri rekukuya chinobviswa kuti chirodze.Mabhiriji maviri kusvika matatu emadhaimani anogona kushandiswa kugadzirisa pamusoro, mativi, uye chimiro chevhiri.
Rotary trimming yava nzira yakakurumbira.Mucheka we rotary wakaputirwa nemazana emadhaimondi.Inowanzo shandiswa kune creep feed grinding application.Vagadziri vazhinji vanoona kuti kune maitiro anoda kugadzirwa kwechikamu chepamusoro uye / kana kushivirira kwakasimba kwechikamu, kucheka kwe rotary kuri nani pane imwe-point kana cluster trimming.Nekuunzwa kweceramic superabrasive mavhiri, kupfeka kutenderera kwave kudikanwa.
Oscillating dresser ndiyo imwe mhando yechipfeko inoshandiswa kumavhiri makuru ekukuya anoda kudzika uye kureba kwekupfeka.
Iyo yekudhirowa yekunze inonyanya kushandiswa kukuya mavhiri kure nemushini, uku uchishandisa yekuona muenzanisi kuratidza chimiro.Mamwe mavhiri anoshandisa wire-cut electric discharge machines kupfekedza mavhiri esimbi anenge achiri kuiswa paguyo.
Dzidza zvakawanda pamusoro pekutenga maturusi emuchina mutsva nekushanyira "Muchina Wekutenga Chigadziro" muTechspex Knowledge Center.
Kunatsiridza camshaft lobe kugaya kutenderera kwagara kwave kushoma kwakavakirwa pasainzi, uye zvakanyanya zvichibva pakufungidzira kwakadzidza uye kukuya kwekuyedza kwakakura.Ikozvino, komputa yekupisa yekuenzanisira software inogona kufanotaura nzvimbo iyo kutsva kwelobe kunogona kuitika kuti itarise inokurumidza kushanda kumhanya iyo isingazokonzerese kukuvadza kwekupisa kune lobe, uye kuderedza zvakanyanya huwandu hunodiwa bvunzo kugaya.
Maviri ekugonesa matekinoroji-yepamusoro abrasive mavhiri uye yakakwirira-chaiyo servo control-combine kuti ipe contour grinding process yakafanana neyekunze kutendeuka mashandiro.Kune akawanda epakati-vhoriyamu OD yekukuya zvikumbiro, iyi nzira inogona kunge iri nzira yekubatanidza akawanda ekugadzira matanho mune imwe setup.
Sezvo zvinokambaira kukuya zvinogona kuwana yakakwirira yekubvisa zvinhu mumidziyo yakaoma, kukuya kunogona kunge kusiri danho rekupedzisira rekuita - inogona kunge iri maitiro.
Nguva yekutumira: Aug-02-2021