1.Tsarin zaɓin masu yankan niƙa gabaɗaya suna la'akari da abubuwan da za a zaɓa:
(1) Siffar juzu'i (la'akari da bayanin martaba): Bayanan sarrafawa gabaɗaya na iya zama lebur, zurfi, rami, zaren, da sauransu. Kayan aikin da ake amfani da su don bayanan martaba daban-daban sun bambanta. Misali, abin yankan niƙa na fillet na iya niƙa filaye masu kama-da-wane, amma ba Filayen Milling concave ba.
(2) Material: Yi la'akari da machinability, guntu forming, taurin da alloying abubuwa. Masu ƙera kayan aiki gabaɗaya suna rarraba kayan zuwa ƙarfe, bakin karfe, simintin ƙarfe, ƙarfe mara ƙarfe, manyan allurai, alloys titanium da kayan wuya.
(3) Machining yanayi: Machining yanayi sun hada da kwanciyar hankali na workpiece tsarin na inji kayan aiki gyarawa, da clamping halin da ake ciki na kayan aiki mariƙin da sauransu.
(4) Machine kayan aiki-kayyade-workpiece tsarin kwanciyar hankali: Wannan na bukatar fahimtar samuwa ikon na'urar kayan aiki, spindle irin dalla-dalla, da shekaru na inji kayan aiki, da dai sauransu, da kuma dogon overhang na kayan aiki mariƙin da axial / ta. Yanayin runout radial.
(5) Nau'in sarrafawa da ƙananan nau'i: Wannan ya haɗa da niƙa kafada, niƙa jirgin sama, milling profile, da dai sauransu, waɗanda ke buƙatar haɗa su tare da halayen kayan aiki don zaɓin kayan aiki.
2. Zaɓin kusurwar geometric na mai yankan niƙa
(1) Zaɓin kusurwar gaba. Ya kamata a ƙayyade kusurwar rake na mai yankan milling bisa ga kayan kayan aiki da kayan aiki. Sau da yawa akwai tasiri a cikin milling, don haka wajibi ne don tabbatar da cewa yankan gefen yana da ƙarfi mafi girma. Gabaɗaya, kusurwar rake na mai yankan niƙa ya fi ƙanƙanta fiye da kusurwar yankan rake na kayan aikin juyawa; karfe mai sauri ya fi girma fiye da kayan aikin carbide da aka yi da siminti; Bugu da kari, lokacin da ake niƙa kayan filastik, saboda girman nakasar yankan, yakamata a yi amfani da babban kusurwar rake; a lokacin da niƙa gaggautsa kayan , The rake kwana ya kamata ya zama karami; lokacin sarrafa kayan tare da babban ƙarfi da tauri, ana iya amfani da kusurwa mara kyau.
(2)Zabi karkata ruwa. kusurwar helix β na waje na da'irar ƙarshen niƙa da mai yankan niƙa na silinda ita ce karkata ruwan wukake λ s. Wannan yana ba wa masu yankan haƙora damar yanke ciki da waje a hankali a cikin aikin aikin, haɓaka santsin niƙa. Ƙarfafa β na iya ƙara ainihin kusurwar rake, ƙayyadadden gefen yanke, da kuma sa kwakwalwan kwamfuta sauƙi don fitarwa. Don masu yankan niƙa tare da faɗin niƙa kunkuntar, haɓaka kusurwar helix β ba ta da mahimmanci, don haka β=0 ko ƙarami ana ɗauka gabaɗaya.
(3) Zaɓin babban kusurwar juzu'i da kusurwa na biyu. Tasirin kusurwar shigarwa na mai yankan fuska da tasirinsa akan aikin niƙa daidai yake da na kusurwar shigarwa na kayan aikin juyawa a cikin juyawa. Kusurwoyin shigar da aka saba amfani da su sune 45°, 60°, 75°, da 90°. Ƙarfin tsarin tsari yana da kyau, kuma ana amfani da ƙananan ƙimar; in ba haka ba, ana amfani da ƙimar mafi girma, kuma an nuna zaɓin kusurwar shigarwa a cikin Tebur 4-3. Babban kusurwar jujjuyawa na biyu shine gabaɗaya 5°～10°. Abun yankan siliki na milling yana da babban yanki kawai kuma ba shi da wani yanki na biyu, don haka babu wani kusurwa na biyu, kuma kusurwar shigarwa shine 90 °.
Lokacin aikawa: Afrilu-17-2018
