Ukumahhadla kwendawo kuyinkomba yezobuchwepheshe ebalulekile ebonisa amaphutha e-microgeometric ongaphezulu lwengxenye futhi kuyisici esibalulekile ekuhloleni ikhwalithi yendawo. Ukukhethwa kokuqina kwendawo kuxhumene ngqo nekhwalithi yomkhiqizo, impilo yesevisi, kanye nezindleko zokukhiqiza.
Kunezindlela ezintathu zokukhetha ubulukhuni obungaphezulu bezingxenye eziwumshini: indlela yokubala, indlela yokuhlola, kanye nendlela yokufanisa. Indlela yesifaniso ivame ukusetshenziswa ekwakhiweni kwengxenye yemishini ngenxa yobulula bayo, isivinini, nokusebenza kwayo. Kudingeka izinto eziyisethenjwa ezanele ukuze kusetshenziswe indlela yokufanisa, futhi izincwadi zokuklama zemishini zinikeza ulwazi oluphelele nezincwadi. Ireferensi evame ukusetshenziswa kakhulu ubulukhuni obungaphezulu obuhambisana nesigaba sokubekezelelana.
Ngokuvamile, izingxenye eziwumshini ezinezidingo zokubekezelela ezinobukhulu obuncane zinamanani amancane okugwedla kwendawo, kodwa abukho ubuhlobo obumisiwe obusebenzayo phakathi kwazo. Isibonelo, ezinye izingxenye eziwumshini, njengezibambo, amathuluzi, okokusebenza kwenhlanzeko, nemishini yokudla, zidinga izindawo ezibushelelezi kakhulu ezinamavelu aphezulu angaphezulu, kuyilapho izidingo zazo zokubekezelela ubukhulu ziphansi. Ngokuvamile, kukhona ukuxhumana okuthile phakathi kwebanga lokubekezelela kanye nevelu yokuqina kwezingxenye ezinezidingo zokubekezelela ubukhulu.
Izingxenye eziningi zomshini zidizayina amamanuwali kanye nama-monographs okukhiqiza zethula amafomula okubala anamandla obunzima obungaphezulu kanye nobudlelwano bokubekezelelana kobukhulu bezingxenye zemishini. Kodwa-ke, amanani ohlwini olunikeziwe avame ukuhluka, abangele ukudideka kulabo abangajwayele isimo futhi akhulise ubunzima bokukhetha ubulukhuni obungaphezulu bezingxenye zemishini.
Ngokwezinto ezibonakalayo, izinhlobo ezihlukene zemishini zinezidingo ezihlukene zobuhwaba obungaphezulu bezingxenye zazo, ngisho noma zinokubekezelela okufanayo kobukhulu. Lokhu kungenxa yokuzinza kokulingana. Ekwakheni nasekukhiqizeni izingxenye zemishini, izidingo zokuzinza kokukhwelana nokushintshana kwezingxenye ziyahlukahluka ngokuya ngohlobo lomshini. Amamanuwali edizayini yezingxenye zomshini akhona abonisa izinhlobo ezintathu eziyinhloko ezilandelayo:
Imishini yokunemba:Lolu hlobo ludinga ukuzinza okuphezulu kokufaneleka futhi lugunyaze ukuthi umkhawulo wokugqoka wezingxenye awudluli u-10% yenani lokubekezelela kobukhulu, kungaba phakathi nokusetshenziswa noma ngemva kokuhlanganiswa okuningi. Isetshenziswa kakhulu endaweni yezinsimbi ezinembayo, amageji, amathuluzi okulinganisa ukunemba, kanye nendawo yokushayisana yezingxenye ezibalulekile ezifana nendawo engaphakathi yesilinda, ijenali eyinhloko yamathuluzi omshini wokunemba, kanye nejenali eyinhloko yomshini wokuhlanganisa oyisicefe. .
Imishini Yokunemba Okujwayelekile:Lesi sigaba sinezidingo eziphakeme zokuzinza kokulingana futhi sidinga ukuthi umkhawulo wokuguga wezingxenye awudluli u-25% yenani lokubekezelela kobukhulu. Iphinde idinga indawo yokuxhumana evalwe kahle futhi isetshenziswa kakhulu kumathuluzi omshini, amathuluzi, namabhere aginqikayo ukuze afane nendawo engaphezulu, izimbobo zephinikhodi, kanye nezindawo zokuthintana ezinejubane eliphezulu lokunyakaza okuhlobene, njengendawo yokukhwelana yebheringi eshelelayo kanye indawo yokusebenza yezinyo legiya.
Imishini Ejwayelekile:Lolu hlobo ludinga ukuthi umkhawulo wokuguga wezingxenye ungeqi ku-50% yenani lokubekezelela ubukhulu futhi akubandakanyi ukunyakaza okuhlobene kwendawo yokuxhumana ye-dimensional tolerance value.cnc izingxenye ezigayiwe. Isetshenziselwa izingxenye ezifana nesembozo samabhokisi, imikhono, indawo yokusebenza engaphezulu, okhiye, okhiye abadinga ukulingana okuseduze, nezindawo zokuxhumana ezinejubane eliphansi lokunyakaza okuhlobene, njengezimbobo zamabakaki, amabhushi, nezindawo zokusebenza ezinezimbobo ze-pulley shaft. kanye nabanciphisi.
Senza ukuhlaziya izibalo zamanani ethebula ahlukahlukene kubhukwana lokuklama komshini, siguqule indinganiso kazwelonke endala yokuhwaqazeka kwendawo (GB1031-68) ibe yindinganiso kazwelonke entsha (GB1031-83) ngo-1983 ngokubhekiselwa kuzinga le-ISO lamazwe ngamazwe. Samukela amapharamitha okuhlola akhethwayo, okuyisilinganiso senani lokuchezuka kwe-contour arithmetic (Ra=(1/l)∫l0|y|dx). Uchungechunge lokuqala lwamanani olukhethwa u-Ra lusetshenziswa ukuze kutholwe ukuhlobana phakathi kobunzima obungaphezulu kuka-Ra kanye nokubekezelela kwe-IT.
Ikilasi 1: Ra≥1.6 Ra≤0.008×IT
I-Ra≤0.8Ra≤0.010×IT
Ikilasi 2: Ra≥1.6 Ra≤0.021×IT
I-Ra≤0.8Ra≤0.018×IT
Ikilasi 3: Ra≤0.042×IT
Ithebula 1, Ithebula 2, kanye neThebula lesi-3 bhala lezi zinhlobo ezintathu zobudlelwane ezingenhla.
Lapho udizayina izingxenye eziwumshini, kubalulekile ukukhetha inani lokuma okungaphezulu ngokusekelwe ekubekezeleleni kobukhulu. Izinhlobo ezahlukene zemishini zidinga amanani ethebula ahlukene ukuze akhethwe.
Kuyaphawuleka ukuthi ithebula lisebenzisa inani lokuqala lochungechunge lika-Ra, kuyilapho izinga likazwelonke elidala lisebenzisa inani lochungechunge lwesibili yenani lomkhawulo lika-Ra. Ngesikhathi sokuguqulwa, kungase kube nezinkinga ngamavelu aphezulu naphansi. Sisebenzisa inani eliphezulu kuthebula ngoba lisiza ukuthuthukisa ikhwalithi yomkhiqizo, futhi inani eliphansi lisetshenziselwa amanani angawodwana.
Ithebula elihambisana nebanga lokubekezelela kanye nobulukhuni bezinga lezinga likazwelonke elidala linokuqukethwe kanye nesimo esiyinkimbinkimbi. Ngebanga elifanayo lokubekezelela, ingxenye kasayizi, kanye nosayizi oyisisekelo, amanani okumahhadla okungaphezulu embobo kanye ne-shaft ayahluka, njengoba enza namanani ezinhlobo ezahlukene zokulingana. Lokhu kungenxa yobudlelwano phakathi kwamanani okubekezelelana okubekezelelana okudala kanye nezinga elifanele (GB159-59) kanye nezici ezishiwo ngenhla. Ukubekezelela nokulingana okujwayelekile kazwelonke kwamanje (i-GB1800-79) kunenani elijwayelekile lokubekezelela usayizi ngamunye oyisisekelo ebangeni elifanayo lokubekezelela kanye nengxenye yosayizi, okwenza kube lula ithebula elihambisanayo lebanga lokubekezelela kanye nobulukhuni bendawo futhi lilenze libe ngokwesayensi futhi libe nengqondo.
Emsebenzini wokuklama, kubalulekile ukusekela ukukhetha kobunzima obungaphezulu eqinisweni lokuhlaziya kokugcina kanye nokuhlola ngokugcwele umsebenzi ongaphezulu kanyecnc inqubo yokukhiqizaumnotho wezingxenye ukukhetha okunengqondo. Amabanga okubekezelela kanye namanani okumahhadla kwendawo anikezwe etafuleni angasetshenziswa njengereferensi yokuklama.
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Isikhathi sokuthumela: Aug-20-2024