Metric threaded hauv qab qhov d=DP.
D yog lub taub loj ntawm cov xov, P yog lub suab
d=DP yog nruab nrab cov pa roj carbon thiab cov ntaub ntawv yas, thiab lwm yam.
d=D-(1.1-1.2)P Aluminium alloy, cam khwb cia hlau thiab lwm yam ntaub ntawv mos
Xaiv ib txoj hauv kev nrog lub qhov loj thiab qhov me me thaum koj koom tes, sim koj tus kheej
Metric thread (MM hniav)
Hniav qhov tob =0.6495 * hniav nrug P
(Zoo lub kaum sab xis 60 degrees)
Sab hauv hniav Aperture =
Nominal txoj kab uas hla -1.0825 * P
M20x2.
(Nominal txoj kab uas hla 20mm) (Pitch 2.5mm)
(Internal xov haum qib 6H)
(Sab nraud xov haum qib 7g)
duab
Sab laug-ob-M20x1.5 (sab laug tes)-(ob lub xov)-(Metric Fine Xov)
(Nominal txoj kab uas hla 20mm) (Pitch 1.5mm)
American xov
(unified thread)
Cov hniav tob =
0.6495*(25.4/cov hniav ib nti)
(Zoo lub kaum sab xis 60 degrees)
3/4-10UNC-2A
(UNC Coarse Teeth) (UNF Fine Teeth)
(1A 2A 3A Sab nraud cov hniav kam rau ua)
(1B 2B 3B sab hauv cov hniav kam rau ua)
UNC American Unified Standard Coarse Xov
3/4 "OD, 10 threads ib nti
Cov hniav sab nraud 2-theem kam rau ua
Tube Xov (Imperial PT)
Cov hniav tob =
0.6403*(25.4/cov hniav ib nti)
(tus hniav kaum 55 degrees)
PT 3/4-14 (tapered yeeb nkab xov) tapered yeeb nkab xov, taper ratio 1/16
3/4 nti ua haujlwm, 14 threads ib nti
cev xov
(PS ncaj xov) (PF zoo xov)
Cov hniav tob =
0.6403*(25.4/cov hniav ib nti)
(tus hniav kaum 55 degrees)
PS 3/4-14 (Txoj yeeb nkab xov)
PF1 1/8-16 (Txoj yeeb nkab xov)
(zoo hniav)
ncaj yeeb nkab xov
3/4 nti ua haujlwm, 14 threads ib nti
1 1/8" ua haujlwm, 16 threads ib nti
Tube xov (US NPT)
(Zoo lub kaum sab xis 60 degrees)
NPT 3/4-14 (tapered yeeb nkab xov) tapered yeeb nkab xov, taper ratio 1/16
3/4 nti ua haujlwm, 14 threads ib nti
trapezoidal xov
(30 degree metric)
TM40*6 nominal txoj kab uas hla 40mm suab 6.0mm
trapezoidal xov
(29 degree Acme xov)
TW26 * 5 txheej inch 26mm, 5 threads ib nti
square xov
Kev suav ntawm tsheb hniav
Xav txog cov xwm txheej Kev suav lej
Kev hloov pauv ntawm metric thiab imperial threads Tus naj npawb ntawm threads ib nti n=25.4 / Pitch P
Pitch P=25.4 / threads ib nti n
Vim tias qhov ceev txiav txim siab los ntawm cov khoom siv ua haujlwm thiab cov cuab yeej, qhov ceev N=(1000 peripheral ceev V) / (circumference p * txoj kab uas hla D)
Vim yog qhov ceev txiav txim los ntawm lub tshuab qauv
Cov nyhuv ntawm kev txav ceev ntawm lub cuab yeej tuav Qhov siab kawg tig N=4000/ P
Ntxiv WeChat: Yuki7557 xa ib qho kev qhia macro program
Kev cuam tshuam ntawm acceleration thiab deceleration ntawm kev txav ceev ntawm lub cuab yeej tuav
Muab xam ntawm qhov txiav taw tes thiab retracting point
(Xau cov hniav tsis tiav) Yam tsawg kawg nkaus txiav L1
L1=(pitch P) * (spindle ceev S) / 500
Qhov siab tshaj plaws lub cuab tam retract nrug L2
L2=(pitch P) * (spindle ceev S) / 2000
Hniav qhov tob thiab hauv paus taub d Hniav qhov tob h =0.6495 * P
Hauv paus kab d=nominal txheej kab D - 2 * h
Piv txwv: Tsheb-ua cov hniav sab nrauv 3/4"-10UNC 20mm ntev
Kev hloov pauv ntawm metric xov thiab imperial xov suab P=25.4 / (tus naj npawb ntawm nti threads n)
P=25.4 / 10=2.54mm
Vim cov khoom siv workpiece thiab
Qhov ceev txiav txim siab los ntawm lub cuab yeej Sab nraud txoj kab uas hla D=3 / 4 ntiv tes=25.4 * (3/4) =19.05MM
Ceev N=(1000 peripheral ceev V) / (circumference tus nqi p * txoj kab uas hla D)
N=1000V / pD=1000 * 120 / (3.1416 * 19.05)
=2005 rpm (rov / min)
Vim yog qhov ceev txiav txim los ntawm lub tshuab qauv
Cov nyhuv ntawm kev txav ceev ntawm lub cuab yeej tuav Qhov siab kawg tig N=4000 / P
N=4000/2.54=1575 rpm
Comprehensive workpiece khoom cuab yeej thiab mechanical qauv
Kev txiav txim siab ceev N=1575 rpm N=2005 rpm
Xaiv qhov qis dua ntawm ob, uas yog, 1575 rpm
Kev cuam tshuam ntawm acceleration thiab deceleration ntawm kev txav ceev ntawm lub cuab yeej tuav
Muab xam ntawm qhov txiav taw tes thiab retracting point
(Xau cov hniav tsis tiav) Yam tsawg kawg nkaus txiav L1
L1=(pitch P) * (spindle ceev S) / 500
L1=2.54*1575/500=8 00mm
Yam tsawg kawg lub cuab tam retract nrug L2
L2=(pitch P) * (spindle ceev S) / 2000
L2=2.54*1575/2000=2 00mm
Hniav qhov tob thiab hauv paus taub d Hniav qhov tob d=nominal txheej kab D-2*h =19.05-2*1.65=15.75mm
