Zvikamu zvakawanda zvemagiya matsva ekuderedza simbauyemagiya emotokaripurojekiti inoda kupfurwa mushure mekugaya giya, izvo zvinozokanganisa kunaka kwemazino, uye kutokanganisa mashandiro eNVH ehurongwa. Iri bepa rinodzidza nezvekukasharara kwemazino eakasiyana pfuti peening process mamiriro uye akasiyana pamberi uye mushure mekupfurwa peening. Migumisiro inoratidza kuti kupfurwa peening kuchawedzera zino pamusoro roughness, izvo kukanganiswa hunhu zvikamu, kupfurwa peening muitiro parameters uye zvimwe zvinhu; Pasi peiyo iripo batch yekugadzira maitiro mamiriro, iyo yakanyanya kuoma zino pamusoro pekukasharara mushure mekupfurwa peening ndeye 3.1 nguva iyo isati yapfurwa peening. Kurudziro yekukasharara kwemazino pakuita kweNVH inokurukurwa, uye matanho ekuvandudza roughness mushure mekupfurwa peening anotsanangurwa.

Pasi pemamiriro ezvinhu ari pamusoro apa, pepa iri rinokurukura kubva pazvikamu zvitatu zvinotevera:

Kufurira kwepfuti peening process parameters pane zino pamusoro roughness;

Iyo amplification degree yepfuti yakadongorera pane zino pamusoro roughness pasi peiyo iripo batch kugadzirwa maitiro mamiriro;

Mhedzisiro yekuwedzera zino pamusoro roughness pane NVH kuita uye matanho ekuvandudza roughness mushure mekupfura peening.

Shot peening inoreva maitiro ayo akawanda madiki projectiles ane kuoma kwepamusoro uye kufamba-kumhanya kwakarova pamusoro pezvikamu. Pasi pekumhanya-mhanya kweiyo projectile, pamusoro pechikamu chinoburitsa makomba uye deformation yepurasitiki ichaitika. Masangano akatenderedza makomba anozoramba deformation iyi uye kugadzira yakasara yekumanikidza kushushikana. Kupindirana kwemakomba akawanda kunoumba yunifomu yakasara compressive stress layer pamusoro pechikamu, nokudaro kuvandudza simba rekuneta kwechikamu. Zvinoenderana nenzira yekuwana kukurumidza kukuru nepfuti, kupenengura kwepfuti kunowanzo kupatsanurwa kuita kudzvanywa kwemhepo kupfurwa kudongorera uye centrifugal pfuti peening, sezvakaratidzwa mumufananidzo 1.

Akadzvanywa mweya pfuti peening inotora compressed mweya sesimba kupfapfaidza pfuti kubva pfuti; Centrifugal shot blasting inoshandisa mota kutyaira impeller kutenderera nekumhanya kukuru kukanda pfuti. Iwo akakosha maitiro maparamendi ekupfurwa peening anosanganisira saturation simba, kufukidzwa uye kupfura peening yepakati zvivakwa (zvinhu, saizi, chimiro, kuoma). Saturation simba parameter kuratidza pfuti peening simba, iyo inoratidzirwa nearc kureba (kureva kukombama dhigirii yeAlmen test piece mushure mepfuti peening); Chiyero chekuvhara (Coverage rate) zvinoreva chiyero chenzvimbo yakafukidzwa negomba mushure mekupfurwa wakadongorera kunzvimbo yese yenzvimbo yakapfurwa; Inowanzo shandiswa pfuti peening media inosanganisira simbi waya yekucheka pfuti, simbi yakakandwa, ceramic pfuti, girazi pfuti, etc. Saizi, chimiro uye kuoma kwepfuti peening media ndeyemagiredhi akasiyana. Izvo zvakajairika maitiro zvinodikanwa zvekufambisa giya shaft zvikamu zvinoratidzwa muTafura 1.

Chikamu chekuyedza ndiyo yepakati shaft giya 1/6 yepurojekiti yakasanganiswa. Chimiro chegiya chinoratidzwa muMufananidzo 2. Mushure mekugaya, zino pamusoro pe microstructure iGiredhi 2, kuoma kwepamusoro ndeye 710HV30, uye hunobudirira hunoita kuomesa denga rakadzika ndeye 0.65mm, zvose zviri mukati mehutano hunodiwa. Zino pamusoro roughness asati apfurwa peening inoratidzwa Table 3, uye zino profiler kururama kunoratidzwa Table 4. Zvinogona kuonekwa kuti zino pamusoro roughness asati apfurwa peening zvakanaka, uye zino profile curve inotsvedzerera.

Test chirongwa uye bvunzo paramita

Mushini wakadzvanywa wemhepo wekupenengura unoshandiswa muyedzo. Nekuda kwemamiriro ekuyedzwa, hazvigoneke kuratidza kukanganisa kwepfuti peening yepakati zvivakwa (zvinhu, saizi, kuoma). Naizvozvo, zvimiro zvepfuti peening svikiro zvinogara zviri muyedzo. Izvo chete kukanganisa kwesimba rekuzara uye kuvharika pane zino pamusoro pekukasharara mushure mekupfurwa peen ndiko kunosimbiswa. Ona Tafura 2 yechirongwa chekuedza. Iyo chaiyo yekumisikidza maitiro ekuyedza ma paramita ndeaya anotevera: dhirowa saturation curve (Mufananidzo 3) kuburikidza neAlmen coupon bvunzo kuti uone nzvimbo yekumisikidza, kuitira kukiya iyo yakamanikidzwa yemhepo kudzvanywa, simbi kupfura kuyerera, nozzle inofamba kumhanya, nozzle kure kubva kune zvikamu. nemimwe michina parameters.

test result

Iyo zino pamusoro peiyo roughness data mushure mekupfurwa peening inoratidzwa muTebhurari 3, uye kurongeka kwezino kunoratidzwa muTebhura 4. Zvinogona kuonekwa kuti pasi pemamiriro mana ekupenengura, kuoma kwemazino kunowedzera uye curve yemazino inova concave uye. convex mushure mekupfura peening. Chiyero chekukasharara mushure mekupfapfaidza kune roughness usati wapfapfaidza inoshandiswa kuratidza roughness magnification (Table 3). Zvinogona kuonekwa kuti roughness magnification yakasiyana pasi pemamiriro mana ekugadzirisa.

Batch Tracking yeKukudza Kwehushasha hweZino Pachiso neShot Peening

Mhedzisiro yemuyedzo muChikamu chechitatu inoratidza kuti kushata kwemazino kunowedzera mumadhigirii akasiyana mushure mekupfurwa kupeneng nemaitiro akasiyana. Kuti unzwisise zvizere kukwidziridzwa kwepfuti yakadongorera pane zino roughness uye kuwedzera huwandu hwemasamples, 5 zvinhu, 5 mhando uye 44 zvikamu zvakazara, zvakasarudzwa kuti zvitarise kushata kusati kwapera uye mushure mekupfurwa kudongorera pasi pemamiriro ekugadzirwa kwebatch. peening process. Ona Tafura 5 yeruzivo rwemuviri nemakemikari uye kupfura peening process ruzivo rwezvikamu zvakatevedzwa mushure mekukuya giya. Kukasharara uye magnification data repamberi nereshure remazino asati apfurwa anoratidzwa mumufananidzo 4. Mufananidzo 4 unoratidza kuti huwandu hwekukasharara kwemazino usati wapfurwa kudongorera iRz1.6 μ m-Rz4.3 μ m; Mushure mekupfura peening, hukasha hunowedzera, uye kugova siyana kuri Rz2.3 μ m-Rz6.7 μ m; Iyo yakanyanya roughness inogona kukwidziridzwa kusvika 3.1 nguva isati yapfurwa peening.

Kufurira zvinhu zvekukasharara kwemazino mushure mekupfurwa

Zvinogona kuonekwa kubva pamusimboti wepfuti peening kuti kuomarara kwepamusoro uye nekumhanya-mhanya pfuti inosiya isingaverengeki makomba pane chikamu chepamusoro, chinova chinobva chekusarira kudzvinyirira kushushikana. Panguva imwecheteyo, makomba aya anosungirwa kuwedzera kushata kwepamusoro. Hunhu hwenhengo dzisati dzapfurwa peening uye kupfurwa peening process parameters kuchakanganisa roughness mushure mekupfurwa peening, sezvakanyorwa muTable 6. MuChikamu chechitatu chebepa rino, pasi pemaitiro mana ekuita, kushata kwemazino mushure mekupfurwa kunowedzera kusvika madhigirii akasiyana. Muyedzo iyi, pane maviri akasiyana, anoti, pre shot roughness uye process parameters (saturation simba kana coverage), izvo zvisingakwanisi kunyatsoona hukama pakati pepost shot peening roughness uye chimwe nechimwe chinofurira chinhu. Parizvino, nyanzvi zhinji dzakaita tsvakiridzo pamusoro peizvi, uye ndokuisa mberi fungidziro yekufembera modhi yekukasharara kwepasi mushure mekupfurwa kudongorera zvichibva pane inogumira element simulation, iyo inoshandiswa kufanotaura hukasha hunofambirana hweakasiyana pfuti peening maitiro.

Zvichienderana neruzivo chairwo uye tsvakiridzo yedzimwe nyanzvi, pesvedzero yemhando dzakasiyana-siyana inogona kufungidzirwa sezvakaratidzwa muTebhurari 6. Zvinogona kuonekwa kuti roughness mushure mekupfurwa peening inokanganiswa zvakanyanya nezvikonzero zvakawanda, izvo zvakare zvinhu zvakakosha. kukanganisa kwasara compressive stress. Kuti uderedze hukasha mushure mekupfurwa wakadongorera pachigadziko chekuona yasara yekumanikidza kushushikana, nhamba huru yemayedzo ekuita inodiwa kuti urambe uchikwiridzira musanganiswa weparameter.

Kupesvedzera kwemazino pamusoro roughness pane NVH kuita kwehurongwa

Zvikamu zvegiya zviri muiyo dynamic transmission system, uye iyo zino pamusoro roughness ichakanganisa kuita kwavo kweNVH. Mhedzisiro yekuedza inoratidza kuti pasi pemutoro wakafanana nekumhanya, iyo yakakura roughness yepasi, iyo yakakura kuzunguza uye ruzha rwehurongwa; Kana mutoro uye kumhanya zvichiwedzera, kuzunguzika uye ruzha zvinowedzera zviri pachena.

Mumakore achangopfuura, mapurojekiti emagetsi matsva anoderedza akawedzera nekukurumidza, uye anoratidza maitiro ekusimudzira ekumhanya kukuru uye torque hombe. Parizvino, iyo yakakura torque yemagetsi edu matsva anoderedza 354N · m, uye iyo yakanyanya kukurumidza ndeye 16000r / min, iyo ichawedzerwa kusvika kupfuura 20000r / min mune ramangwana. Pasi pemamiriro ezvinhu akadaro ekushanda, pesvedzero yekuwedzera kwemazino pamusoro pehuremu hwekuita kweNVH yehurongwa hunofanirwa kutariswa.

Matanho ekuvandudza kukwasharara kwemazino mushure mekukwenya

Iyo pfuti yekupenengura maitiro mushure mekugaya giya inogona kuvandudza kusimba kwekuneta kweiyo giya zino repamusoro uye kukotama kuneta simba remudzi wezino. Kana maitiro aya achifanira kushandiswa nekuda kwezvikonzero zvesimba mukugadzira giya, kuitira kupa kufunga nezvekuita kweNVH kweiyo system, kushata kwegiya zino repamusoro mushure mekupfurwa kudongorera kunogona kuvandudzwa kubva kune zvinotevera zvinhu:

a. Gadzirisa iyo yekupfura peening process paramita, uye dzora kukwidziridzwa kwezino pamusoro roughness mushure mekupfurwa kudongorera pachigadziro chekuona yasara compressive kusagadzikana. Izvi zvinoda maitiro akawanda ekuyedzwa, uye maitiro akasiyana-siyana haana kusimba.

b. Iyo composite yekupfura peening process inogamuchirwa, ndiko kuti, mushure mekunge simba rakajairwa peening rapera, imwe pfuti peening inowedzerwa. Iyo yakawedzera pfuti peening process simba kazhinji idiki. Rudzi uye saizi yemidziyo yepfuti inogona kugadziridzwa, senge ceramic kupfura, girazi pfuti kana simbi waya yekucheka pfuti ine saizi diki.

c. Mushure mekupfurwa peening, maitiro akadai semazino ekupurudzira uye mahara honing anowedzerwa.

Mubepa rino, zino pamusoro roughness akasiyana pfuti peening process mamiriro uye mativi akasiyana pamberi uye pashure kupfurwa peening inodzidzwa, uye zvinotevera mhedziso inotorwa maererano nemabhuku:

◆ Shot peening kuchawedzera zino pamusoro roughness, izvo kukanganiswa hunhu zvikamu asati apfurwa peening, kupfurwa peening muitiro parameters uye zvimwe zvinhu, uye zvinhu izvi ndiwowo anokosha zvinhu zvinokanganisa residual compressive stress;

◆ Pasi iripo batch kugadzirwa muitiro ezvinhu, kunonyanyisa zino pamusoro roughness pashure kupfura peening iri 3.1 nguva kuti asati apfurwa peening;

◆ Kuwedzera kwemazino pamusoro pepamusoro kuchawedzera kudengenyeka uye ruzha rwehurongwa. Iyo yakakura torque uye kumhanya, zvakanyanya kujeka kuwedzera kwekudengenyeka uye ruzha;

◆ The zino pamusoro roughness pashure kupfura peening anogona kuvandudzwa kuburikidza optimizing pfuti peening muitiro parameters, composite pfuti peening, achiwedzera polishing kana vakasununguka honing pashure kupfurwa peening, etc. The optimization yepfuti peening muitiro parameters inotarisirwa kudzora roughness amplification kuti. anenge 1.5 nguva.