Doorashada Qadarka Reaming
⑴ Gunnada dib-u-celinta Gunnada dib-u-celinta waa gunnada la jaray ee loo qoondeeyay dib-u-gurashada. Caadiyan, gunnada dib-u-celinta way ka yar tahay gunnada raynta ama caajiska. Kaalmada dib-u-celinta badan waxay kordhin doontaa cadaadiska goynta waxayna dhaawacdaa reamer-ka, taasoo keenta qallafsanaanta dusha la warshadeeyay. Marka marginku aad u weyn yahay, cirifka qallafsan iyo cirifka fiican waa la kala saari karaa si loo hubiyo shuruudaha farsamada.
Dhanka kale, haddii gunnada billet-ku ay aad u yar tahay, reamer-ku wuxuu daabi doonaa xilli hore oo si caadi ah looma jari karo, qallafsanaanta dushana sidoo kale way liidataa. Guud ahaan, gunnada dib-u-celinta waa 0.1 ~ 0.25mm, iyo godad dhexroorka weyn, gunnada kama badnaan karto 0.3mm.
Waxaa jirta waayo-aragnimo soo jeedinaysa in la xafido dhumucda 1 ~ 3% dhexroorka reamer sida gunnada reaming (qiimaha dhexroorka). Tusaale ahaan, way ku habboon tahay in lagu daro Φ20 reamer leh dhexroor dalool oo ku saabsan Φ19.6: 20-(20*2/100)=19.6 Gunnada raynta ayaa inta badan laga dhigaa kuwo ka yar alaabta adag iyo qaar ka mid ah qalabka hawada sare.
(2) Heerka quudinta reaming Heerka quudinta reaming ayaa ka weyn tan qodista, badiyaa 2 ~ 3 jeer ka mid ah. Ujeedada heerka quudinta sare waa in la sameeyo reamer-ka gooya walxaha halkii uu ka ahaan lahaa walxaha xoqan. Si kastaba ha ahaatee, qallafsanaanta Ra ee qiimaha reaming waxay kordhisaa korodhka heerka quudinta. Haddii heerka quudintu aad u yar yahay, is jiid jiidka shucaaca ayaa kordhi doona, reamer-kuna si degdeg ah ayuu u dami doonaa, taas oo keenaysa in reamer-ku gariiro oo uu qallajiyo dusha daloolka.
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Qalabka birta ee caadiga ah ee qaybaha birta, si loo helo qallafsanaanta dusha sare ee Ra0.63, heerka quudinta waa inuusan dhaafin 0.5mm/r, qaybaha birta ah ee la shubay, waxaa lagu kordhin karaa 0.85mm/r.
⑶ Xawaaraha isbinaajka iyo xadiga reaming Dhammaan curiyayaasha waxay saamayn ku leeyihiin qallafsanaanta dusha sare ee dalool-qarinta, kuwaas oo xawaaraha reaming uu leeyahay saamaynta ugu weyn. Haddii reamer bir loo isticmaalo reaming, qallafsanaan ka wanaagsan Ra0.63; m , Qalabka kaarboonka dhexdhexaadka ah ee birta dhexdhexaadka ah, xawaaraha reaming waa inuusan dhaafin 5m / min, sababtoo ah cidhifka la dhisay ma fududa inuu dhaco wakhtigan, xawaaruhuna ma sarreeyo; Marka la hagaajinayo birta shubka ah, sababtoo ah jajabyadu waxay u jajaban yihiin granular, gees urursan lama samayn doono. Cidhifyada, markaa xawaaraha waxaa lagu kordhin karaa 8 ~ 10m / min. Guud ahaan, xawaaraha dunta dunta ee reaming waxa loo dooran karaa 2/3 ee xawaaraha dunta dunta ee qodista isla shay.
Tusaale ahaan, haddii xawaaraha dunta wax lagu qodayo uu yahay 500r/min, waxaa macquul ah in la dejiyo xawaraha dunta dunta 2/3 ka mid ah: 500*0.660=330r/min
Waxa loogu yeero reamer dhab ahaantii waa caajis. Caajis fiican ayaa inta badan leh margin hal dhinac ah oo ah 0.03-0.1 iyo xawaarihiisa 300-1000. Heerka quudintu waa inta u dhaxaysa 30-100, iyada oo ku xidhan haddii loo yaqaan mindi.
Waqtiga boostada: Agoosto-24-2023
