Kowane madaidaicin walda ya san gaskiya: naku tebur ƙirƙira karfe ba kawai saman ba - shine ginshiƙi na maimaitawa, anka don sarrafa juriya, da kuma layin farko na kariya daga sake yin aiki mai tsada. Mun ga shagunan sun yi hasarar kwana uku akan taron gungu guda ɗaya saboda daidaitawar T-slot na tebur ya karkata 0.15 mm akan lokaci. Mun kalli jigs-yanke Laser yana yaƙe a ƙarƙashin nauyin zafi lokacin da farantin tushe ya rasa ƙarfe mai ƙarfi. Madaidaicin ba ya farawa daga fitila - yana farawa inda sashin ya taɓa teburin.
Me Yasa Mutuncin Abu Ya Fi Muhimmanci Fiye da Tsarin Bolt
Yawancin masu siye suna kwatanta tebur ƙirƙira karfe ƙayyadaddun bayanai ta nauyi, girman, ko adadin T-ramummuka. Wannan yana kama da yin la'akari da injin injin ta lambar murfinsa. Abin da a zahiri ke ƙayyade daidaito na dogon lokaci shine kwanciyar hankali na ƙarfe. Cold-birgima A572 Grade 50 karfe-mayar da zafi zuwa 220-250 HB-ya tsayayya da ƙananan nakasawa ƙarƙashin maimaita matsi. Teburan ƙarfe masu ƙanƙan da ba a kula da su ba suna jujjuyawa a bayyane a 1.2 kN/m²; Taurare faranti suna riƙe da lebur a cikin ± 0.08 mm a fadin 2,000 × 1,500 mm saman bayan watanni 18 na amfanin yau da kullun. Mun tabbatar da wannan tare da sharewar CMM na kwata-ba kawai rajistan karba na farko ba. Matsakaicin taurin saman saman yana da mahimmanci: zurfin shari'ar 3 mm yana tabbatar da juriya ba tare da haɗarin karaya ba yayin shigarwar ƙasa mai nauyi mai nauyi.
Hidden Cost of "Universal" Dutsen Systems
Wasu teburi suna tallata "daidaituwa na zamani" amma jirgi tare da abubuwan da aka saka na M8 da aka raba su da nisan mm 100. Wannan yana aiki da kyau-har sai kuna buƙatar saita 47mm diamita na hydraulic manifold flange da ke buƙatar cibiyoyi 60 mm. Sassauci na gaskiya yana nufin ƙirar grid mai daidaitawa: 50 mm don daidaitaccen kayan aiki, 25 mm don ƙaramin walƙiya, da sadaukar da 12.7 mm daidaitattun ramukan dowel don yin rajistar jig mai maimaitawa. A Botou Haijun Metal Products Co., Ltd., kowane tebur yana amfani da geometry na T-slot mai dual-Layer - saman ramummuka suna karɓar daidaitattun matsi na mm 10; madaidaicin ramummuka masu zurfi suna kulle filaye masu gano wuri na al'ada tare da ± 0.02 mm maimaitawa. Babu adaftan. Babu shims. Babu zato.
Gudanar da Zazzaɓi na Gaskiya na Duniya Ba Ne Tattaunawa ba
Welding yana haifar da ƙazamin zafi da ya wuce 1,200°C. Tebur ba tare da kula da yawan zafin jiki na zafi ba da sauri fiye da yadda za ku iya cewa "gyaran murdiya." Maganin mu? Farantin tushe mai kauri 32 mm tare da haƙarƙari na ciki wanda ke ninka ƙarancin zafi yayin rage nauyi da 17% tare da faranti mai ƙarfi. Kowane haƙarƙari yana aiki azaman nutse mai zafi, yana watsa kuzari daga saman aikin. Muna inganta wannan ta amfani da infrared thermography: hawan zafin jiki yana tsayawa ƙasa da 18 ° C bayan 300-amp GMAW jere guda biyar ya wuce kan wani yanki na gwajin ƙarfe na carbon 10 mm. Kwatanta hakan da teburin masu fafatawa suna nuna karukan 42°C—da kuma auna ruku'u mm 0.23 na gaba a layin tsakiya.
Babu ɓoyayyiyar sulhu: Duk tebur suna amfani da ASTM A572 Gr. 50 karfe-ba "daidai" maki tare da ƙarancin yawan amfanin ƙasa ba Babu bambance-bambancen tsari: Kowane farantin yana yin gwajin ultrasonic don lamination na ƙasa kafin yin injin Babu juzu'in daidaitawa: Daidaitawar T-slot wanda aka riƙe zuwa ± 0.05 mm/m akan cikakken tsayi, an tabbatar da shi tare da interferometer Laser Me Ke Faruwa Lokacin Da Ka Tsallake Bitar Injiniya
Wani OEM aikin gona na Arewacin Amurka ya ba da umarnin tebur 12 dangane da zanen CAD kawai - ba a nemi ra'ayin DFM ba. Tsarin su yayi amfani da ramukan hawa 6 mm a cikin farantin kauri na mm 25. A yayin gwajin filin, matsewar juyi ya haifar da zaren zare a cikin kashi 37% na kayan aiki. Gyaran? Sake tsara zurfin rami zuwa mm 18 tare da zaren birgima maimakon yanke zaren-ƙara ƙarfin cirewa da kashi 210%. Shi ya sa muke ba da bita na ƙira na tushen CAD kyauta a cikin sa'o'i 72. Ba "shawara ba." Ba "shawarwari ba." Ingantacciyar ma'auni mai ƙima akan ka'idodin ASME Y14.5 GD&T, gami da mafi munin tari-up bincike don daidaita ma'auni da yawa.
A tebur ƙirƙira karfe yana samun darajar sa ba a farkon weld ba - amma a cikin 12,000th. Yana tabbatar da kanta lokacin da motsi na uku ke gudanar da wannan shirin ba tare da sakewa ba. Lokacin da sabon ma'aikaci ya sami ± 0.1 mm dacewa a ranar farko ta su. Lokacin da rahoton ku na CMM ya nuna jujjuyawar sifili sama da watanni shida. Kamfanin Botou Haijun Metal Products Co., Ltd. ya gina wadannan tebura a cikin birnin Botou - zuciyar masana'antar sanyi ta kasar Sin - inda horon karafa ba na tilas ba ne. Kowane tebur yana jigilar kaya tare da cikakkun takaddun shaida, bayanan ingantattun CMM, da lambar da za a iya ganowa. Domin daidaito ba sifa ba ce. Yana da tushe.
