1. Cov chav nyob yooj yim thiab cov cim tshwj xeeb
Qhov seem
Metric Aluminium Rods: cov cheeb hauv millimetres (piv txwv li, {mm, thiab kev ua siab ntev yog ntsuas hauv millimeters (piv txwv li, ± 0.1mm).
Imperat Txhuas Rods: cov cheeb yog cim nyob rau hauv nti (piv txwv li, φ3 \/ 4 nti), ntev yog qhia hauv cov xov rau ib nti (tpi).
Xov qauv
| Kev qhia tshwj xeeb | Metric Aluminium Rods | Imperat Alentsle Rods |
|---|---|---|
| Xov Hom | Metric Xov (M Series) | Imperial threads (BSP \/ Whitworth) |
| Xov kaum | 60 degree (ISO Txuj) | 55 degree (BSS qauv) |
| Xov duab plaub | Millimeter values (piv txwv li, 1.5mm) | TPI (piv txwv li, 11 TPI) |
Tau qhov twg los: Siv 13
2. Kev tsim qauv thiab kev sib txawv
Kev kam rau precision
Metric Rods: cov cheeb tsam thev taus feem ntau {{0}}}}}}}}}}}}}}}}}}}}}}.
Imperial pas nrig: lub cheeb ua choj tsis kam nyob rau hauv txhiab ib nti (piv txwv li, {{{}}}}}}}}}}}}}}}}}}.}}
Khoom Siv Khoom Tshwj Xeeb
Metric cov pas nrig: alloy qib ua raws ISO cov qauv (piv txwv li, 6061- t6,} T651); Cov cuab yeej kho mechanicalatorevies tau xeem nyob rau hauv Si chav.
Imperial pas nrig: cov khoom siv qib ua raws li Astm lossis SAE (piv txwv li, 6061- T6511); Lub zog yog ntsuas hauv cov khoom siv phaus (psi).
3. Daim ntawv thov cov xwm txheej thiab cov kev nyiam hauv cheeb tsam
Cov tsheb thauj mus los ntawm cov chaw
Metric Rods: tseem ceeb hauv Suav teb, Europe, Nyij Pooj, thiab Kaus Lim Kauslim. Siv dav hauv cov nplais hluav taws xob zoo li cov roj teeb ain thiab hnub ci nkhaus (ntau dua 60% ntawm kev thov).
Imperial pas nrig: tseem tshaj tawm hauv cov haiv neeg Asmeskas Asmeskas (piv txwv li, cov raj roj roj, aerospace), nrog rau metric.
Kev Lag Luam Kev Lag Luam
Kev sib xyaw ua ke: metric cov pas nrig tau tshaj yog cov khoom siv Iso (piv txwv li, cov pob qij txha sib xyaw); Imperial Rods yuav tsum tau txuam SAE fasteners.
Tus ntoo khaub ncaws hla: metric cov pas nrig xa tawm nrog cov ntawv sau ua haujlwm (piv txwv li, {{mm} hli} mm} hli ≈ 0.787 nti); Imperial implets yuav tsum tau hloov dua tshiab kos kom paub meej tias tau sib xws.
4. Kev hloov dua siab tshiab thiab cov txheej txheem ua haujlwm
Qhov tseem ceeb hloov pauv
| Chaw ua uas tsis tau haus | Metric → Imperial Piv Txwv | Kev pheej hmoo ua yuam kev |
|---|---|---|
| Qhov dav | Φ25mm ≈ 0. 984 nti | Cumulative Orogs yuav ua rau sib dhos jamming |
| Xov pitch | 2 hli ≈ 12.7 tpi | Xov mismatch yuav ua rau galling lossis tsis ua hauj lwm |
| Lub zog tensile | 310mpa ≈ 44,965 psi | Chav tsev tsis raug txhais tau yuav cuam tshuam kev nyab xeeb tsim |
Tau qhov twg los: Siv 25
Machining tswv yim
Rau metric txhuas pas nrig, siv 60 degree xov ntxig.
Rau cov pas nrig Imperial, siv 55 degree nkag rau cov tsiaj ntawv whitworth.
Rau cov khoom siv sib xyaw ua ke, nws raug nquahu kom ua ntej hloov cov kev hloov chaw los ua kom yooj yim.
Tag
Tus tseem ceeb sib txawv ntawm Metric thiab Imperat Alentsle Rods dag hauv lawv cov qauv txheem thiab cheeb tsam sib haum xeeb. Hauv cov xwm txheej thoob ntiaj teb sourcing, yuav tsum tau them rau chav nyob hloov pauv kev pheej hmoo. Siv cov cim hloov dual-qauv lossis cov cuab yeej hloov hloov dua siab tshiab (piv txwv li, cov roj ntsha tau pom zoo kom txo kev sib koom tes thiab cov nqi sib koom tes.
