Gear kayan aiki da tsarin sarrafawa

Dangane da halin da ake ciki yanzu, wannan gwajin yana amfani da karfe 20CrMo azaman kayan gwaji don gwaje-gwajen kwaikwayo.

Hanyar hanyar ita ce: maganin zafi (carburizing da quenching), zafi mai zafi (tsananin zafi) sanyaya na haƙori roughing (hobbing, gear shapeing). Ƙayyadaddun tsari shine kamar haka: bayan pre-machining da hobbing na 20CrMo Gears, carburizing, high-frequency induction dumama zuwa AC3 (875) austenitizing zafin jiki, m mai sanyaya zuwa 150-250, daidaici a cikin zafi mai, extrusion The dabaran plastically deforms. saman hakori zuwa girman karshe, kuma jujjuyawar ta ƙare. Lokacin da workpiece ne har yanzu a cikin austenitic jihar, da workpiece da aka dauka fitar da sauri sanyaya don samar da wani wuya martensite tsarin a kan hakori surface.

Na farko, an samo dangantaka tsakanin kusurwar hakori da matsayi na meshing.
Mirgina mutu da workpiece gear an saita su zama daidaitattun shigarwa, kuma gear hakora ana juya counterclockwise karkashin tuki na mirgina mutu hakora. Matsayin layin da aka karya na hakora a cikin adadi an saita zuwa matsayi mai tsaka-tsaki, kuma an haifar da kusurwar j1 lokacin da hakora suka rabu da wannan matsayi.
A matsayi na tsaka tsaki j1 = 0, j1 yana da ma'auni mai kyau lokacin da haƙoran suna karkatar da su a kusa da agogo tare da matsayi mai tsaka-tsaki, da ƙima mara kyau lokacin da aka karkatar da agogo. 

Al'amarin meshing a gefen hagu yana kama da haka.
Zai iya rubuta alaƙa tsakanin kowace sigar matsayi
Right flank: j1=j1/20-j1(1)
Left flank: j1=i1-0-j1/2(2)
inda j1=arccos(rb1/rj1)(3)
J1=s1/r1-2(invj1-inv0)(4)
Further derivation jj1=j1-j1/2(5)
Xj1=rj1cos (j1/2)
-r2F-(tf/2)2(6)
Dangane da ƙimar darajar kusurwar jujjuyawar haƙori, ana iya sani daga wannan dabarar da ke sama cewa dangantakar da ke tsakanin j1 da jj1 da rj1 an ƙaddara ta musamman.

Ta wannan hanya, ana iya samun alakar i1 da ii1, ri1 a saman haƙoran hagun. Hasali ma, i1=j1. Don haka, idan dai an ba da j1, an ƙayyade matsayin maƙallan meshing i da j na haƙoran haƙoran haƙora na hagu da dama na layin meshing. Bugu da ƙari, j-point akan haƙorin mutuƙar birgima yana da radius da'irar rj2=rb22j22 (7) inda rb2 shine tushen da'irar radius na mirgina haƙoran mutu;

J2 shine radius na curvature a batu j akan haƙoran mutuƙar birgima. 

Saboda haka, matsayi na j batu a kan mirgina mold hakora za a iya ƙaddara ta dabara, da kuma daidai matsayi sigogi kamar jj2, xj2 da j2 an samu.
Dangane da ka'idar nakasar lamba ta Hertz, adadin nakasar nakasa a wurin meshing je=115FfBE(10) Adadin nakasar filastik Sp na aikin haƙoran haƙora a wurin lamba ana iya ƙididdige shi ta hanyar ka'idar filin filin zamewa. Sp103=jFjkB2bjFjkBcj(11) Inda ake hada radius na curvature na gefen gefe guda biyu a inda aka yi alkawari j.
Sa'an nan jimlar nakasar j a wurin j a kan hakori za a iya bayyana shi azaman dabarar j=jjijeSp2 (12) inda 2 shine nakasar nakasa a wurin j na saman hakori na birgima ya mutu, da hanyar lissafi da da nakasar roba na workpiece hakori Adadi guda; akwai sarkar watsawa ta ciki tsakanin mirgine mold da kayan aikin aiki, kuma a cikin yanayin tsaka-tsakin tsaka-tsaki na tsaka-tsakin tsaka-tsaki, adadin nakasawa na yau da kullun j = S0 ƙayyadaddun ƙima ne, inda S0 shine extrusion tare da jagorar layin meshing. .
Ɗaukar 20CrMo carburized gear da aka yi amfani da shi sosai a cikin masana'antar kera motoci da ingantattun kayan aikin a matsayin misali, wannan takarda ta ba da shawarar ingantaccen tsarin nakasawar yanayin zafi wanda ya haɗu da magani mai zafi, mirgina mai kyau da quenching a cikin tsarin sarrafa kan layi guda ɗaya, kuma yana kafa na'ura. Ana amfani da ƙirar meshing ƙarfi mai gefe biyu na haƙoran haƙora yayin aiwatar da extrusion don samun ƙididdigar ƙididdiga na nakasar lankwasa na roba, nakasar lamba ta roba da jimlar nakasar haƙori na mirgina mutu da aikin aikin.

Shiga wannan labarin ： Tattaunawa Akan Fasahar Injiniya Da Nakasar Kayayyakin Gear

Bayanin Bugawa: Idan babu umarni na musamman, duk labaran da ke wannan rukunin yanar gizon asali ne. Da fatan za a nuna tushen don sake bugawa: https: //www.cncmachiningptj.com/，thanks！

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