Ukuhlaziywa Kwesikhathi Sokupholisa Sokubumba Umjovo

Ekukhiqizeni umjovo, ukubumba umjovo wepulasitiki izingxenye zesikhathi sokupholisa sawo wonke umjikelezo wokukhiqiza umjovo cishe 80%. Ukupholisa okungekuhle kuvame ukuholela ekuphepheni komkhiqizo noma ekulimaleni kwendawo, okuthinta ukuzinza kwe-dimensional yomkhiqizo. Ukuhlelwa okunengqondo komjovo, isikhathi sokupakisha kanye nokupholisa, ingathuthukisa ikhwalithi yomkhiqizo kanye nokukhiqiza.

Ingxenye ye isikhathi sokupholisa, ngokuvamile ibhekisela ekuncibilikeni kwepulasitiki kusuka ekubunjweni okugcwele isikhunta kungavuleka ukukhipha ingxenye yesikhathi.. Ingakwazi ukuvula isikhunta ngaphandle kwesilinganiso sesikhathi, kaningi nge-workpiece yelashwe ngokugcwele, ngamandla athile kanye nokuqina kuyanqoba, ekubunjweni okuphuma phezulu kwe-deformation ngeke kuqhekeke. Ngisho nokubumba okufanayo kwepulasitiki, isikhathi sayo sokupholisa siyahlukahluka ngokuqina kodonga, izinga lokushisa lepulasitiki elincibilikisiwe, izinga lokushisa lokukhululwa kwesikhunta kanye nokushisa kwesikhunta somjovo. Ifomula yokubala isikhathi sokupholisa ku-a 100% isisekelo kuzo zonke izimo ayikashicilelwa, kodwa kuphela ngesisekelo sokuqagela okufanele. Ifomula yokubala nayo iyahlukahluka kuye ngencazelo yesikhathi sokupholisa.

Okwamanje, ngokuvamile izindlela ezintathu ezilandelayo njengereferensi yesikhathi sokupholisa:

① izinga lokushisa lengxenye ewugqinsi yodonga lokubumba lomjovo wepulasitiki, isikhathi esidingekayo ukupholisa ngaphansi kwezinga lokushisa lokuhlanekezela ukushisa kwepulasitiki;

(2) izinga lokushisa elijwayelekile esigabeni se ingxenye yokubumba umjovo wepulasitiki, isikhathi esidingekayo ukupholisa izinga lokushisa lesikhunta lomkhiqizo oshiwo;

③ izinga lokushisa lengxenye ewugqinsi yodonga olumaphakathi lodonga olubunjiwe lwepulasitiki, isikhathi esidingekayo ukuze kuphole ngaphansi kwephuzu lokuncibilika, noma isikhathi esidingekayo ukuze kufinyelelwe iphesenti elishiwo lokucwebezela.

Ekuxazululeni i- ifomula, ukucatshangelwa okulandelayo kwenziwa ngokujwayelekile:

① umjovo wepulasitiki ku umjovo isikhunta, kanye nokudluliswa kokushisa esikhunjini somjovo futhi kupholiswe;

② umgodi wokubumba wepulasitiki kanye nomgodi wokubumba usondelene nokuncipha kokupholisa nokuhlukaniswa, ncibilikisa futhi isikhunta udonga phakathi kokudluliswa kokushisa nokugeleza ngaphandle kokuphikiswa, ncibilika bese ubumba ukuthintana kodonga ngesikhathi izinga lokushisa selifana. Leyo, lapho ipulasitiki ingena emgodini, izinga lokushisa le-workpiece lilingana nezinga lokushisa lodonga lwesikhunta;

③ umjovo wepulasitiki wokubumba izingxenye inqubo yokupholisa, izinga lokushisa lomgodi wesikhunta lomjovo lihlala lifana;

④ umjovo isikhunta izinga lokushisa eliphezulu kufanele libe; (ncibilikisa inqubo yokugcwalisa njengenqubo ye-isothermal, kanye neyunifomu yezinga lokushisa)

⑤ ipulasitiki orientation nokucindezeleka ezishisayo on deformation izingxenye zinganakwa, ubukhulu bezingcezu zokushisa kokuqina akuphazamisi.