1. Haƙuri don famfo na ma'auni daban-daban
Ba za a iya zaɓar matakin daidaito na famfo da ƙaddara kawai bisa ga daidaiton matakin zaren da za a yi amfani da shi ba, Hakanan yakamata yayi la'akari:
(1) kayan aiki da taurin kayan aikin da za a yi;
(2) Kayan aiki na taɓawa (kamar yanayin kayan aikin injin, kayan aiki na kayan aiki, zoben sanyaya, da sauransu);
(3) Daidaituwa da ƙera kuskuren famfo kanta.
Misali: sarrafa zaren 6H, lokacin aiki akan sassan karfe, ana iya zaɓar madaidaicin famfo na 6H;A cikin sarrafa baƙin ƙarfe mai launin toka, saboda tsakiyar diamita na famfo yana sawa da sauri, haɓakar ramin dunƙule shima ƙarami ne, don haka ya dace don zaɓar madaidaicin famfo na 6HX, rayuwa zata fi kyau.
Bayanin madaidaicin fam ɗin JIS:
(1) Yankan famfo OSG yana amfani da tsarin daidaitaccen tsarin OH, daban-daban daga ka'idodin ISO, tsarin daidaitaccen tsarin OH zai tilasta nisa na duk yankin haƙuri daga mafi ƙasƙanci, kowane 0.02mm azaman matakin daidaito, mai suna OH1, OH2, OH3, da sauransu. ;
(2) Extrusion famfo OSG yana amfani da tsarin daidaito na RH, tsarin daidaitaccen tsarin RH yana tilasta nisa na duk yankin haƙuri don farawa daga mafi ƙasƙanci mafi ƙasƙanci, kowane 0.0127mm azaman matakin daidaito, mai suna RH1, RH2, RH3 da sauransu.
Don haka, lokacin amfani da madaidaicin madaidaicin ISO don maye gurbin madaidaicin fam ɗin OH, ba za a iya la'akari da cewa 6H kusan daidai yake da matakin OH3 ko OH4, wanda ke buƙatar ƙaddara ta hanyar juyawa, ko kuma gwargwadon halin da abokin ciniki ke ciki.
2. Girman waje na famfo
(1) A halin yanzu, waɗanda aka fi amfani da su sune DIN, ANSI, ISO, JIS, da dai sauransu;
(2) Zaɓi tsayin jimlar da ta dace, tsayin wuka da rike girman murabba'in bisa ga buƙatun aiki daban-daban ko yanayin da ake ciki na abokan ciniki;
(3) Tsangwama yayin aiki.
3. Abubuwan asali guda 6 na zaɓin famfo
(1) Nau'in sarrafa zaren, awo, Biritaniya, Amurka, da sauransu;
(2) Nau'in rami na kasa na zaren, ta rami ko makaho;
(3) Material da taurin aikin da za a yi amfani da shi;
(4) Zurfin cikakken zaren aikin aikin da zurfin rami na kasa;
(5) Matsakaicin da ake buƙata ta zaren workpiece;
(6) Siffar ma'aunin famfo.
Lokacin aikawa: Oktoba-31-2023