Kev xaiv tus nqi Reaming
⑴ Reaming allowance Reaming allowance yog qhov tob ntawm kev txiav tshwj xeeb rau reaming. Feem ntau, qhov nyiaj pub rau reaming tsawg dua qhov nyiaj pub rau reaming lossis tho txawv. Kev pub nyiaj ntau dhau yuav ua rau kom lub siab txiav thiab ua rau lub reamer puas, ua rau roughness ntawm cov txheej txheem nto. Thaum cov npoo loj dhau lawm, lub pob khawm ntxhib thiab pob khawm zoo tuaj yeem sib cais los xyuas kom meej cov kev xav tau.
Ntawm qhov tod tes, yog tias qhov nyiaj pub dawb me me dhau lawm, tus reamer yuav hnav ntxov ntxov thiab tsis tuaj yeem txiav ib txwm, thiab qhov roughness ntawm qhov chaw yuav tsis zoo. Feem ntau, qhov nyiaj pub rau reaming yog 0.1 ~ 0.25mm, thiab rau qhov loj txoj kab uas hla, qhov nyiaj pub tsis tuaj yeem siab dua 0.3mm.
Muaj kev paub dhau los uas qhia kom khaws lub thickness ntawm 1 ~ 3% ntawm txoj kab uas hla reamer raws li qhov nyiaj pub dawb (inch tus nqi). Piv txwv li, nws yog qhov tsim nyog ntxiv rau Φ20 reamer nrog lub qhov taub txog Φ19.6: 20-(20 * 2 / 100) = 19.6 Reaming nyiaj feem ntau yog ua me me rau cov ntaub ntawv nyuaj thiab qee cov khoom siv aerospace.
(2) Pub tus nqi ntawm reaming Tus nqi pub ntawm reaming yog loj dua li ntawm qhov drilling, feem ntau 2 ~ 3 zaug ntawm nws. Lub hom phiaj ntawm tus nqi pub ntau dua yog ua kom cov reamer txiav cov khoom siv cov khoom siv abrasive. Txawm li cas los xij, qhov roughness Ra tus nqi ntawm reaming nce nrog nce tus nqi pub. Yog tias tus nqi pub tsawg dhau, qhov sib txhuam radial yuav nce, thiab cov reamer yuav hnav sai heev, ua rau lub reamer vibrate thiab roughen ntawm lub qhov.
Xinfa CNC cov cuab yeej muaj cov yam ntxwv zoo thiab tus nqi qis. Yog xav paub ntxiv, thov mus saib:
Tuam Tshoj CNC cuab yeej Hoobkas thiab cov chaw muag khoom (xinfatools.com)
Txheem steel reamer ua steel qhov chaw, kom tau qhov chaw roughness Ra0.63, tus nqi pub yuav tsum tsis pub tshaj 0.5mm / r, rau cam khwb cia hlau qhov chaw, nws yuav nce mus rau 0.85mm / r.
⑶ Reaming spindle ceev thiab reaming tus nqi Tag nrho cov ntsiab lus muaj kev cuam tshuam rau ntawm qhov chaw roughness ntawm lub reaming qhov, ntawm cov reaming ceev muaj qhov zoo tshaj plaws kev cuam tshuam. Yog hais tias ib tug steel reamer yog siv rau reaming, ib tug zoo roughness Ra0.63; m, Rau nruab nrab carbon steel workpieces, lub reaming ceev yuav tsum tsis txhob ntau tshaj 5m / min, vim built-up ntug tsis yooj yim rau tshwm sim nyob rau lub sij hawm no, thiab qhov ceev yog tsis siab; Thaum reaming cam khwb cia hlau, vim hais tias cov chips tau tawg mus rau hauv granular, tsis muaj ntug sib sau yuav tsim. Ntug, yog li qhov ceev tuaj yeem nce mus rau 8 ~ 10m / min. Feem ntau, cov spindle ceev ntawm reaming tuaj yeem xaiv tau raws li 2/3 ntawm cov spindle ceev ntawm drilling ntawm tib cov khoom.
Piv txwv li, yog tias qhov drilling spindle ceev yog 500r / min, nws yog qhov tsim nyog los teeb tsa qhov ceev spindle ntawm 2/3 ntawm nws: 500 * 0.660 = 330r / min
Qhov hu ua reamer yog qhov ua tau tho txawv. Cov tho txawv zoo feem ntau muaj qhov sib txawv ntawm 0.03-0.1 thiab qhov ceev ntawm 300-1000. Tus nqi pub yog nyob nruab nrab ntawm 30-100, nyob ntawm seb nws puas hu ua riam.
Post lub sij hawm: Aug-24-2023
