Kowane madaidaicin bita yana fuskantar ƙulli ɗaya shuru: tebur ɗin da ke ƙarƙashin kayan aikin. Ba kawai kowane saman-amma a tebur ƙirƙira al'ada gyare-gyaren don riƙe juriya, ɗaukar rawar jiki, gyare-gyaren anga, da tsira da hulɗar ƙarfe-kan-karfe na yau da kullun. Mun ga ma'aikatan CNC suna sake yin sassa sau biyu saboda tebur ya canza ƙarƙashin ƙarfi. Mun kalli ɓangarorin yankan Laser sun gaza gwajin aiki bayan murɗawar walda-wanda aka samo shi zuwa haɓakar yanayin zafi mara daidaituwa a cikin farantin tushe mara tushe. Waɗannan ba lokuta ba ne. Mahimman rikice-rikice ne na yau da kullun waɗanda ke lalata maimaitawa, haɓaka ƙima, da jinkirta yarda da labarin farko.
Me yasa Teburan Kashe-Shelf suka gaza Karkashin lodin Bita na Gaskiya
Matsakaicin aikin benches na karfe suna kallon karko har sai kun ɗora su da manyan taro mai zurfin kilogiram 40 ko amfani da ƙarfin tanƙwalwar tan 12 a tsayin mita 1.2. Sa'an nan warping ya fara - ba a bayyane ba, amma a cikin microns. Juyawar 0.08 mm a nesa mai nisa na tebur 1,500 mm yana fassara zuwa ± 0.15° kuskuren kusurwoyi a cikin wani yanki na walda. Wannan ya isa a daidaita ramukan hawa don shingen bawul ɗin ruwa ko jefar da hanyoyin walda na mutum-mutumi.
Muna auna wannan akai-akai. A cikin tabbataccen kwanan nan don abokin ciniki mai aiwatar da aikin noma, tebur iri ɗaya iri ɗaya - guda uku-kowanne wanda aka ƙididdige nauyin nauyi mai nauyin kilogiram 1,000 - ya nuna 0.23 mm, 0.31 mm, da 0.47 mm sag a ƙarƙashin kaya mai nauyin kilogiram 800. Babu wanda ya cika ±0.05 mm haƙurin kwanciyar hankali da ake buƙata don jigin hatimin su. Tushen dalili? Tazarar haƙarƙari mara-uniform, rashin daidaiton kauri, da ƙarancin yawan amfanin ƙasa a cikin kayan tushe.
A gaskiya tebur ƙirƙira al'ada farawa ba da girma-amma da aikace-aikace kimiyyar lissafi. Menene max clamping torque? Maki nawa nawa ne ke buƙatar abubuwan saka zaren M10 a madaidaicin juriyar matsayi na 0.02 mm? Shin tebur yana yin mu'amala tare da hannun CMM ko haɗa masu gano cutar huhu? Waɗannan suna ayyana tsarin-ba akasin haka ba.
Hudu Marasa Tattaunawa a cikin Injiniyan Tebu Madaidaici
Dangane da tsarin tebur na al'ada sama da 1,200 tun daga 2016, muna ware abin da ke raba aikin maimaitawa daga sake yin aiki mai tsada:
Tabbatar da ingancin kayan abu: Babu rahoton gwajin niƙa? Babu gini. Cold-birgima Q235B da S355JR faranti dole ne su nuna bokan tensile ƙarfi (≥470 MPa), elongation (≥22%), da taurin (120-160 HB). Aluminum 6061-T6 yana buƙatar tabbacin T6 fushi-tabbatar da gwajin sikelin Rockwell B kafin yin injin. Ƙirƙirar da aka kawar da damuwa: Dukkanin faranti na tushe suna jurewa zafi mai zafi a 620 ° C na tsawon sa'o'i 4, sannan sanyaya mai sarrafawa. Tsallake wannan matakin yana gayyatar jinkirin rarrafe yayin ayyukan samarwa na tsawon lokaci-musamman mahimmin mahimmanci ga teburan da ke riƙe da na'urorin dubawa masu yawan axis. Ƙarfafawa na gida: Geometry na haƙarƙari ba daidai ba ne - an tsara shi. Yankuna masu nauyi suna samun haƙarƙari mai kauri tare da kauri tushe na 12-mm; Yankunan da ba su da ƙarfi suna amfani da haƙarƙari-mm 6 da aka raba a cibiyoyin 250 mm. Muna inganta kowane shimfidar wuri tare da binciken buckling FEA pre-weld. Haƙuri stacking iko: Abubuwan da aka zana ba su dace ba. An shigar da su helicoil cikin ramukan da aka sake gyarawa, ramukan da ba su da ƙarfi - tare da juriyar matsayi da aka riƙe zuwa ± 0.015 mm ta hanyar CNC jig m. Ana tabbatar da shimfidar saman saman a kan jirgin sama mai faɗi ta amfani da alamar bugun kira da madaidaiciyar madaidaiciya-ba matakin ruhi ba. Yadda Ƙaramar-Batch Sassauci ke Kore Real ROI
Yawancin shagunan suna ɗaukar tebur na al'ada suna buƙatar MOQs masu girma da lokutan jagora na makonni 12. Wannan ya wuce. A Botou Haijun Metal Products Co., Ltd., muna gina tebur samfuri na raka'a guda a cikin kwanakin aiki 11 - gami da cikakken bita na DFM, takaddun shaida, da binciken ƙarshe na CMM. Me yasa? Saboda kayan aikin mu masu yarda da ISO suna haɗa tambari, lankwasa, walda, da ingantattun mashin ɗin ƙarƙashin rufin ɗaya. Babu dillalai na waje. Babu jinkirin handoff. Babu tari na haƙuri tsakanin masu kaya.
Wannan sarrafawar tsaye yana ba da sakamako masu ma'auni: Tier-1 mai siyar da kera motoci ya rage lokacin sake zagayowar rukunin su da kashi 22% bayan canzawa daga teburin alumini na zamani zuwa teburin ƙirƙira ta al'adar welded-karfe tare da haɗaɗɗen ƙugiya mai huhu da fil ɗin datum. Wani abokin ciniki ya yanke lokacin amincewa da labarin farko daga kwanaki 17 zuwa kwanaki 4-saboda sabon tebur ɗinsu ya gudanar da kiran GD&T a duk faɗin mahimman abubuwan 14 ba tare da jujjuyawa ba.
Farashin ya kasance abin damuwa mai inganci-amma yin kuskure ya fi tsada. Teburin al'ada na $ 4,200 yana isar da maimaitawa na 0.02 mm yana biya a cikin watanni 3.2 lokacin da ya kawar da abin da ya faru na mako-mako wanda ya kai $1,350 a cikin aiki da kayan aiki. Zaɓuɓɓukan kashe-kashe da wuya suna isar da wannan ROI. Suna musayar tanadi na gaba don jan aiki na ɓoye.
Abin da Teburin Kerkarwa na Al'ada na gaba Yake Bukatar Yi-Ba kawai Kasancewa ba
Teburin ku bai kamata kawai ya “riƙe sassa ba.” Dole ne ya goyi bayan manufofin aiwatar da ku. Yi waɗannan tambayoyin kafin a faɗi:
Shin yana ɗaure jigs ɗin ku na yanzu-ko yana buƙatar sake fasalin duk kayan aikin? Za a iya jure yanayin walda mai maimaita MIG ba tare da yin lahani ba? An inganta rarraba nauyinsa don ƙimar nauyin bene-ko zai buƙaci ƙarfafa tsarin?
Ana ajiye ramukan hawa don samun damar binciken ku na CMM-ko za ku rasa ɗaukar nauyin awo 30%? Idan amsoshin suna buƙatar zato, ba ku shirya ginawa ba. Fara da samfurin CAD-kuma aika shi zuwa aikin injiniya. Botou Haijun Metal Products Co., Ltd. yana ba da ra'ayin DFM kyauta a cikin kwanakin aiki uku. Babu filin tallace-tallace. Babu tsaron ƙofa. Shigar da kawai za a iya aiwatarwa: inda za a ƙara haƙarƙari, waɗanne kayan ne ke guje wa lalata galvanic tare da kayan aikin ku, yadda ake jera walda don rage murdiya.
A tebur ƙirƙira al'ada shi ne ginshiƙin daidaito-ba tunani na baya ba. Shi ne inda aka fara haƙuri, ba inda suka ƙare ba. Lokacin da teburin ku ya riƙe gaskiya, komai na ƙasa yana daidaitawa. Lokacin da ba haka ba, babu wani abu mai mahimmanci.
