Video: Koj pom SFM li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
1 Diab kawg zeb
Qhov uas cov machinists pom tau yog qhov ntawd SFM yog ib tug formula raws li 1" txoj kab uas hla. SFM tas li los ntawm 4 kom tau txais RPM rau 1 "cov cuab yeej (200 SFM X 4 = 800 RPM) thiab muab cov SFM los ntawm 8 (200 SFM X 8 = 1600 RPM) rau lub cuab yeej 1/2 ".
Yog li ntawd, kuv yuav xam RPM li cas?
Txhob suav thaum 1 feeb dhau los. Qhov no yog pes tsawg revolutions ib feeb, los yog RPM , cov khoom ua. Tsis txhob txwv qhov suav ntawm 1 feeb, koj tuaj yeem xav suav rau 2 lossis 3 feeb thiab mam li faib cov suav los ntawm cov feeb kom tau txais RPM yog tias qhov khoom tig maj mam.
Dab tsi yog SFM hauv drilling? Drilling Ceev thiab pub. Qhov ceev ntawm a xyaum yog ntsuas nyob rau hauv cov nqe lus ntawm tus nqi uas sab nraud los yog periphery ntawm lub cuab tam tsiv nyob rau hauv kev sib raug zoo rau cov hauj lwm raug drilled. Lub ntsiab lus thiab lub sij hawm rau qhov kev tshaj tawm no yog qhov taw qhia ib feeb, luv luv sfm ua.
Ntawm no, qhov kev txiav ceev yog dab tsi?
Txiav ceev yog qhov ceev hauv linear taw ib feeb los yog "Nto Feet per feeb " (SFM) uas muab cov hniav (flute) ntawm lub tshuab txiav yuav txav mus thaum nws txiav los ntawm cov khoom. Txhua cov ntaub ntawv muaj cov ntaub ntawv SFM lossis "txiav ceev".
Yuav ua li cas hloov rpm rau FPM?
Hloov lub tsheb ceev ntawm mais ib teev mus rau taw ib feeb : 60 mph = 1 mile ib feeb, uas nyob rau hauv lem yog 5,280 ft/min . Lub tsheb lub log tsheb muaj txoj kab uas hla ntawm 1.125 ko taw. Yog tias s = n • πd, faib ob sab ntawm kab zauv los ntawm πd: n = s ÷ πd = (5280 ft/min ) ÷ 3.14 • 1.125 ft = 1,495 rpm ua.
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