Nitsewa - menene wannan?

The fasaha aiwatar da canza masu girma dabam da kuma siffofi na sassa ne kullum ba tare da irin wannan na machining, duka biyu nitsewa. Fassara daga Jamus kalmar ma'ana "wuri", "zurfafa". Don zama mafi daidai, shi ne mai tsari, a lokacin wanda qara diamita daga cikin ramukan. Yana za a iya kwatanta ta da reaming. Countersinking - wani inji aiki, wanda aka yi a lokacin da m na ramuka, don inganta ingancin da kuma daidaito na su surface.

karbar ramuka

Domin sosai gane abin da yake nitsewa, dole ne ka da wani ra'ayin yadda za a yi ramuka a daki-daki. Misali a preform zama dole rawar soja a rami na biyar aji na daidaici diamita na 12 mm.

Wannan zai bukatar hakowa inji da kuma 3 aiki kayan aiki: rawar soja, countersink da kuma duba. Kowace daga cikin wadannan wurare da aka tsara don rike, saboda reaming rawar soja, tura - wannan aiki sosai kama da juna. Da farko a yi a workpiece amfani da rawar soja rami, amma da diamita zai zama yawa kasa da ake bukata, sai ka ce rabin - 6 mm.

Wannan shi ne roughing. Next, shi wajibi ne don ream countersink diamita 12 mm (kammala aiki). Bugu da kari, core hakowa zai samar 7 daidaici aji.

Domin cewa bude 5 a aji, dole ne ka yi amfani da scan. Za a samar da zama dole size iyaka da kuma alawus - karewa da kuma karewa rami machining. Reaming da countersinking yawanci aiki a kan wannan diamita, amma daban-daban size iyaka, kuma kamar yadda janye samar da wani m aji na daidaito, izni ga tayin zaba tare da high daidaituwa.

Reaming da countersinking

Sau da yawa sosai da wadannan Concepts ne rude da juna saboda gaskiyar cewa su ne sosai irin wannan a cikin sunayen. Duk da haka, idan sinking - wani tsari a lokacin da countersink haifa daga dukan zurfin da countersink aiki kira saman.

Wajibi ne a samar da tududa da countersunk shugaban fastening abubuwa (kusoshi, rivets, sukurori). Countersink - ga kayan aiki chamfering ne daban-daban daga countersink siffar da aiki part.

Materials da kuma irin countersink

Kamar wani sabon kayan aiki, countersink ne classified da irin yi, da kuma siffar irin magani, kazalika da abu daga abin da aka sanya.

Tun da kayan aiki na da babban taurin, yawanci an yi shi da babban gudun karfe, duk da haka, sau da yawa za a iya gani daga wani constructional doped countersink (40X) da carbon (ST45) gami.

Nitsewa - shi ne smoothing da kuma tsabtace daga cikin farfajiya, don haka kayan aiki kanta tana da manyan yawan yankan gefuna. Countersinks iya zama precast wutsiya tare da m ruwan wukake, wutsiya a yanki daya, tura-kan da kuma tura-na game teams.

Lokacin da kyan gani, daga mahangar yadda ya dace, to, ba shakka, ire kida ne mafi tsada, amma su rai ne da ya fi tsayi, tun gefen m za a iya maye gurbinsu.

A tsawon da diamita

Tun lokacin da hakowa, reaming - tsari ne quite kama, atisayen bit (musamman tare da girmamawa ga karkace drills) da kuma countersink da kusan guda tsarin. Kowane kayan aiki yana da wani sabon kashi cewa kai tsaye sa wani rami a ɓangare.

Bambanci shi ne cewa akwai wani countersink mai gangara sabon abu, amma akwai daga uku zuwa shida hakora. Its aiki part kunshi wani ma'auni da kuma sabon gyara. A tsawon dogara a kan zurfin na biyu reaming. A ma'auni - a tsaye qwarai tare da sabon abu. Su nisa dogara da diamita na countersink (0.8-2.5 mm) da kuma tsawo - 0.2-0.9 mm.

Reaming - wani inji aiki, kama da reaming. Idan da manufa ne zuwa huda ga tayin, da countersink diamita da aka zaba karami, ba da izni ga karshe karewa aiki. Bayan haka, tun da ake bukata sahihancin wannan kayan aiki ne m fiye cewa for Ana dubawa da cikakkar dabi'u na sabawa iya zama fiye da.

A cikin wani akwati, reaming ramuka - wannan shi ne na karshe karewa da ake bukata domin sassa tare da juna da ragowa da 11, 12 to aji. Sa'an nan da kayan aiki da ake zaba bisa wani rashin lafiya da kuma ajiye don lalacewa, kuma da diamita dole dace da diamita daga cikin rami.

Engineering da kuma zane

Domin cewa diamita daga cikin ramukan ya zama dole a matsayin cikakken matsayin yiwu, aiki doguwar countersink. Kamar wancan ne za mu iya samun matsakaicin kuma m diamita dole kayan aiki domin sanin abu da kuma ta yanke wani bangare na yin lissafi na yankan yanayi.

Muhimman abubuwan da zai shafi matsakaicin kuma m dabi'u - shi ne ake bukata kvalitet. Alal misali, shi wajibi ne don yin Gama countersinking ramuka a kan 85 mm diamita da Qualitet H11. Bisa filayen ramuka tolerances allunan a maras size daga 1 zuwa 500 mm, domin ingancin aji 11 (for diameters daga 80 mm zuwa 120 mm) haƙuri filin ne: babba darajar - "220", da kuma ƙananan - "0", Ina nufin 85 ²²⁰ mm. Matsakaicin diamita na reams ramukan ba zai iya wuce 85,22 mm, da kuma m - 85 mm.

A wannan yanayin, girma haƙuri - ne bambanci tsakanin D _max da kuma D _min, Ina nufin shi zai zama 0,22 mm. Idan muka magana game da aure, sa'an nan ramukan za a zaton incorrigible diamita fi 85,22 mm kuma correctable - kasa da 85 mm.