Nhwɛsoɔ: 117 Ɔkyerɛwfoɔ: Site Editor Bere a wɔde tintimii: 2024-01-09 Mfiase: Beaeɛ
Sɛ ɛba wiase a ɛyɛ nwonwa a ɛfa hose ne tube fittings ho a, asaawa ahorow a ɛwɔ hɔ no betumi ayɛ nea ɛboro so koraa. Ɛte sɛ nea wugyina nkuruwankuruwa a ɛyɛ nkuruwankuruwa a emu biara wɔ ne nnyigyei ne emu dɔ soronko mu, na woresusuw ɔkwan bɛn na ɛkɔ baabi a ɛfata pɛpɛɛpɛ no ho. Wɔ saa asɛm yi mu no, m’ani agye sɛ mɛpae ahintasɛm a ɛwɔ saa nhama yi mu ama mo. Yɛde nnianim asɛm titiriw bi a ɛfa nea nhama yɛ ho na efi ase - saa spiral grooves a ɛho hia a ɛma nuts, bolts, ne fittings yɛ adwuma wɔ mfiri ne nneɛma a wɔde di dwuma da biara da a wontumi nkan mu.
Wɔ saa akwantuo yi mu no, yɛbɛhwehwɛ nhama ahodoɔ titire, te sɛ BSPP, UN/UNF, ne metric parallel threads, na yɛakɔ wiase a tapered threads, a metric tapered, BSPT, ne NPT/NPTF threads ka ho. Eyinom a wobɛte ase no bɛboa wo ma woapaw nea ɛho ka sua na ɛfata sen biara, ahwɛ ahu sɛ wotumi de ho to so na esiw adwumayɛ a ɛnkɔ yiye ano wɔ wo nnwuma mu. Enti, momma yɛnhyɛ aseɛ wɔ saa thread adventure yi so na yɛnhunu deɛ ɛfata pɛpɛɛpɛ ma w’ahiadeɛ!
Sɛ yɛka nhama ho asɛm a, yɛreka helical structure a wɔde dannan wɔ rotational ne linear movement anaa force ntam. Nhama wɔ baabiara! Hwɛ nkɔnsɔnkɔnsɔn a ɛkura wo pon no mu, wo nsu toa no anoano, anaa kanea a ɛwɔ wo kanea mu mpo. Wɔn nyinaa de wɔn ho to nhama so na ama wɔatumi atra baabi na ayɛ adwuma yiye.
Asaawa yɛ abon a ɛkɔ so twitwiw biribi a ɛte sɛ kurukuruwa anaa ahinanan ho. Saa nhyehyɛe yi ma wotumi de afã horow no bom yiye. Fa no sɛ antweri a ɛyɛ nkuruwankuruwa bi abɔ odum bi ho —saa na asaawa bi te wɔ skru anaa bolt so.
Threads ho hia efisɛ wɔde di dwuma wɔ applications a enni ano a ɛka yɛn da biara da asetra mu. Wɔn ne abran a wɔwɔ sunsuma mu, a wɔhwɛ hu sɛ nneɛma rensɛe. Nea enti a ɛho hia kɛse ni:
l Nneɛma a Wɔkura Bom : Efi dan mu nneɛma so kosi mfiri so no, wɔde nhama di dwuma wɔ nhama a wɔde kyekyere nneɛma te sɛ nkɔnsɔnkɔnsɔn ne nkɔnsɔnkɔnsɔn mu na ama nneɛma no akɔ so abata wɔn ho wɔn ho yiye.
l Fluid Control : In the fluid-power industry , nhama hwɛ hu sɛ paipu ne tube fittings no rentu, a ɛho hia ma nhyehyɛe ahorow a ɛde nsu, ngo, anaa gas kɔ.
l Pɛpɛɛpɛ wɔ Mfiri mu : Wɔ mfiri a ɛyɛ pɛpɛɛpɛ kɛse, te sɛ aduruyɛ mfiri mu no, sɛnea asaawa no kɛse yɛ pɛpɛɛpɛ no ho hia na ama wɔahwɛ ahu sɛ ɛyɛ adwuma yiye na ahobammɔ wom.
Nhama pii wɔ hɔ ahorow , na emu biara wɔ n’ankasa dwumadie ne ne su pɔtee. Kakraa bi ni:
l Amerika Pipe Threads : Wɔde eyinom di dwuma wɔ Amerika Atifi fam de siw paipu nkitahodi ahorow ano.
l SAE Unified Threads : Gyinapɛn a wɔde yɛ screw thread a wɔtaa de di dwuma wɔ kar adwumayɛ mu.
l Metric ISO Thread : Metric thread gyinapɛn a wɔde di dwuma kɛse wɔ amanaman ntam.
Sɛ wopɛ sɛ wokyerɛ asaawa no a , ɛho behia sɛ wuhu susudua atitiriw kakraa bi:
l Major Diameter : Ɛyɛ akyi ntwemu kɛse sen biara no ɔbarima asaawa .
l Minor Diameter : Ne ntwemu ketewaa bi, a wohu wɔ asaawa no ase.
l Pitch Diameter : Eyi yɛ ntwemu cylinder a wɔde wɔn adwene bu a ɛfa asaawa a ɛwɔ soro a ɛyɛ ɔbarima asaawa ne asaawa a ɛyɛ ɔbea asaawa a ɛwɔ asaawa mu no .
Asaawa a wɔde hu no betumi ayɛ anifere, nanso nnwinnade te sɛ afiri a wɔde kyerɛ ɛnne nnyigyei betumi aboa. Saa adwinnade yi susuw asaawa no kɛse , a ɛyɛ kwan a efi biako asaawa no atifi kɔ foforo so wɔ axial plane mu.
Geometric parameters a ɛwɔ thread bi mu no kyerɛkyerɛ n’ahoɔden ne n’adwuma mu. Nneɛma a ɛwɔ asaawa no mu te sɛ ɛse no anim ne asaawa no kɛse na ɛkyerɛ sɛnea asaawa no bɛkura mu yiye ne ahoɔden dodow a ebetumi agyina ano. Sɛ nhwɛso no, skru a ɛwɔ nhama abien bɛkɔ n’anim ntɛmntɛm sen skru a ɛwɔ nhama biako mmɔho abien wɔ bere biara a ɛkyinkyini no mu, na ɛbɛma wɔanya mfiridwuma mu mfaso.
l Parallel thread ne tapered thread yɛ akuo titire mmienu. Nhama a ɛne ne ho di nsɛ no ma ne kɛse yɛ pɛ wɔ ne nyinaa mu, bere a nhama a ɛyɛ teateaa no twetwe teateaa, na ɛboa ma wɔyɛ nsɔano a ɛyɛ den.
l Nsa Nifa Nhama na ɛtaa ba, baabi a sɛ wodan kɔ dɔn no kwan so a, ɛma asaawa no mu yɛ den. Benkum-Nsa Nhama ntaa ntaa na ɛyɛ den wɔ ɔkwan a ɛne no bɔ abira so.
ntease Nhama ne ne geometric parameters ho hia efisɛ ɛyɛ adansi nneɛma pii a atwa yɛn ho ahyia. Efi abofra agode asinasin a wɔkyekyere bom so kosi wimhyɛn ahobammɔ a wɔhwɛ so no, nhama di dwuma titiriw wɔ yɛn wiase yi mu. Bere a yɛrehwehwɛ asaawa a wɔyɛ no pɔtee mu no , kae sɛ saa nkuruwankuruwa nketenkete yi yɛ kɛse wɔ hia a ɛho hia no mu.
When discussing thread types , ɛho hia sɛ yɛte wɔn dwumadi atitiriw ase.
nhama a wɔde si so di dwuma de kyekyere nneɛma a ɛwom no bom. Wɔtaa de Susuw nkɔnsɔnkɔnsɔn a ɛwɔ kɔmputa kotoku mu no ho hwɛ; wɔayɛ no sɛnea ɛbɛyɛ a wobetumi akura afã horow no mu.
transmission threads , yɛ ade titiriw wɔ nhyehyɛe ahorow a ɛde ahoɔden kɔ mu no mu. Nanso Wohu saa nhama yi wɔ mfiri ahorow mu nkɔnsɔnkɔnsɔn a wɔde kɔbere ayɛ mu, baabi a wɔn geometry ma wotumi dannan kankyee a ɛkyinkyini no kɔ kankyee a ɛyɛ tẽẽ mu.
Transport threads yɛ soronko kakra. Wodi dwuma titiriw wɔ nsu a wɔde yɛ adwuma no mu . Wɔayɛ saa nhama yi sɛnea ɛbɛyɛ a ɛbɛsɔ nsɔano wɔ paipu ne tube fittings mu , na ama wɔahwɛ ahu sɛ wɔde nsu anaa mframa bɛkɔ baabiara a ahobammɔ wom na etu mpɔn. Wɔayɛ thread type biara ama n’atirimpɔw pɔtee, na thread identification ho hia kɛse wɔ application ahorow mu de ahwɛ ahu sɛ ɛne ne ho hyia na ɛyɛ adwuma.
Wobetumi akyekyɛ nhama mu sɛ Nsa Nifa (RH) nhama anaa Benkum (LH) nhama . Nsonsonoe no yɛ mmerɛw nanso ɛho hia. RH nhama no mu yɛ den wɔ dɔn no kwan so, na ɛno ne akwankyerɛ a wɔtaa de fa nhama a wɔde kyekyere nhama dodow no ara ho . Ɛkame ayɛ sɛ skru anaa bolt biara a ɛtaa ba a wubehyia no benya RH asaawa. LH nhama , , ɛyɛ den sɛnea ɛne dɔn no bɔ abira na ɛntaa nsi. Nanso Wɔde di dwuma wɔ tebea horow a tumi a ɛkyinkyini no betumi ama RH asaawa bi ayɛ mmerɛw mu, te sɛ sakre nan benkum so.
l Nsa Nifa Nhama :
¡ Twe den sɛnea dɔn no kyerɛ
¡ dodow no ara Screw thread a wɔde di dwuma
l Benkum-Nsa Nhama :
¡ Twe den wɔ ɔkwan a ɛne dɔn no bɔ abira so
¡ Nneɛma titiriw a wɔde di dwuma de siw nea ɛbɛsan ayɛ mmerɛw ano
Pipe nhama wɔ ahorow atitiriw abien: nhama a ɛyɛ teateaa ne asaawa a ɛne ne ho di nsɛ Wɔayɛ . nhama a ɛyɛ teateaa , te sɛ National Taper Pipe (NPT) , sɛnea ɛbɛyɛ a nhama no ankasa bɛyɛ nsɔano. Bere a wɔkyekyere ɔbarima ne ɔbea nhama no mu den no, ɛyɛ nsɔano esiane interference fit no nti. Eyi ma wɔyɛ nea eye ma dwumadie a ɛfa mframa anaa nsuo a ɛwɔ nhyɛsoɔ ase ho.
Nhama a ɛne ne ho di nsɛ , te sɛ British Standard Pipe Parallel (BSPP) , hia ade a ɛkata so, te sɛ washer anaa O-ring, na ama wɔahwɛ ahu sɛ nsu ntumi nkɔ mu. Wɔtaa de di dwuma wɔ nhyɛso a ɛba fam mu ne baabi a ebia ɛho behia sɛ wɔboaboa nkitahodi no ano na wɔpaapae mu mpɛn pii.
l Nhama a Ɛyɛ Tapered : .
¡ Ɔman Taper Pipe (NPT) .
Sealing a wonya denam asaawa a ɛtwetwe adwene so
Wɔde di dwuma wɔ nhyehyɛe ahorow a nhyɛso kɛse wom mu
l Nhama a ɛne ne ho di nsɛ : .
¡ Britaniafo gyinapɛn Pipe Parallel (BSPP) .
Ɛhwehwɛ sɛ wɔde nneɛma foforo a wɔde hyɛ mu
Ɛfata ma mpɛn pii a wɔboaboa ano / disassembly
T hread kɛseɛ ho hia na ɛho hia sɛ wobɛkyerɛ thread type no yie de ahwɛ sɛ nkitahodiɛ no yɛ pɛpɛɛpɛ. Sɛ́ ebia wo ne American Pipe Threads , SAE Unified Threads , anaa Metric ISO thread , reyɛ adwuma no, a ɛfata thread identification nhyehyɛe no ho hia yiye. Nnwinnade te sɛ pitch gauge ne caliper betumi aboa wɔ saa adeyɛ yi mu, adi nnwuma gyinapɛn ahorow a ɛfa nominal size profile ho na wɔahwɛ ahu sɛ thread design a ɛfata ma application no.
ISO metric thread, a wɔtaa frɛ no M , yɛ amansan thread type . Wɔde di dwuma wɔ wiase nyinaa, ɛyɛ standardized thread ma atirimpɔw ahorow nyinaa. Pitch diameter ne major diameter yɛ nneɛma atitiriw a ɛwɔ saa thread type yi mu . Metric threads agye din esiane sɛ ɛyɛ mmerɛw na ɛnyɛ den sɛ wobehu thread no nti.
Nnwuma a wɔde di dwuma no bi ne: - Mfiri - Kar adwumayɛ - Nneɛma a wɔde di dwuma
Metric nhama ma ahoɔden ne nea wotumi de yɛ nneɛma pii kari pɛ, na ɛma ɛyɛ nhama ahorow a ɛho hia wɔ nneɛma a wɔyɛ mu no mu biako.
ISO metric fine thread anaa MF yɛ soronko wɔ standard M thread no ho wɔ ne nne mu . no Ɛnne yɛ fɛ, a ɛkyerɛ sɛ nhama no bɛn wɔn ho wɔn ho kɛse. Eyi ma nhama dodow a ɛkɔ soro wɔ unit tenten biara mu. no Asaawa pa ma wotumi di nhyɛso so yiye na eye ma dwumadie a ɛho hia sɛ wɔyɛ no pɛpɛɛpɛ a ɛkorɔn.
Nsonsonoeɛ titire bi ne: - ketewaa Ɛnne nnyigyei - Asaawa kɛseɛ a ɛyɛ den - Ahoɔden kɛseɛ wɔ ntokuru a wɔabɔ tap mu
metric fine threads di dwuma wɔ Wɔtaa de fluid-power adwumayɛbea ne nneɛma a ɛhwehwɛ sɛ wɔyɛ nsakrae a ɛyɛ fɛ mu.
Dade a wɔde fa nsu mu asaawa , a wɔfrɛ no Pg , no wɔ abakɔsɛm mu ntease. Efi Germany na wɔde dii dwuma kɛse wɔ Europa nyinaa de yɛɛ anyinam ahoɔden nhama a wɔde hyɛ mu. Ɛnnɛ, Pg nhama wɔ dwumadie pɔtee bi wɔ anyinam ahoɔden adwumayɛ mu, na ɛhwɛ ma nkitahodiɛ a ahobanbɔ ne ahotosoɔ wɔ.
Mprempren dwumadie no fa: - Electrical fittings - Conduit systems - Instrumentation
Ɛmfa ho sɛ a ɛkɔ soro no ahorow nhama Pg , da so ara yɛ nea ɛfata esiane nnwuma gyinapɛn ne agyapade nhyehyɛe ahorow nti.
Trapezoidal thread , a wɔafrɛ no Tr , no yɛ nea ɛda adi wɔ ne sẽ a ɛte sɛ trapezoidal no mu. Saa nhyehyɛe yi ma wonya mfiridwuma mu mfaso a ɛyɛ den , na ɛma ɛfata ma nnesoa a emu yɛ duru ne kɔbere nkɔnsɔnkɔnsɔn wɔ mfiri mu.
Dwumadie no bi ne: - Tumi a wɔde kɔ - Kankyee nsakraeɛ firi rotational kɔ linear - Fa di dwuma wɔ vises ne jacks mu
Trapezoidal thread yɛ thread type a wɔtaa de di dwuma wɔ drive systems a wɔyɛ mu. Ne geometry ma wotumi kyekyɛ nnesoa wɔ beae kɛse, na ɛma asaawa no kyɛ na ɛtra hɔ kyɛ.
Wɔ ɔfa yi nyinaa mu no, yɛaka ISO nhama ahorow te sɛ metric ISO nhama , ISO metric fine thread , ne afoforo. Ɛho hia sɛ wobɛkyerɛ asaawa no yiye ama dwumadie a wopɛ sɛ woyɛ no, ɛfiri sɛ asaawa no kɛseɛ ho hia . Nnwinnade te sɛ pitch gauge ne caliper som bo kɛse ma thread identification process , hwɛ hu sɛ ɛne ne ho hyia na ɛyɛ adwuma wɔ threaded afã horow.
Sɛ yɛka Amerika nhama ahorow ho asɛm a , Unified National Coarse Thread anaa UNC yɛ no mu biako nhama ahorow a ɛho hia . Ɛyɛ gyinapɛn a ɛkyerɛkyerɛ helical nhyehyɛe a wɔde yɛ asaawa a wɔde kyekyere nneɛma ho . nne . Wonim UNC sɛ ne a ɛtrɛw sen ahorow afoforo, na ɛma ɛfata sɛ wɔde di dwuma wɔ nneɛma ahorow mu wɔ ɔkwan a ɛkɔ akyiri so Thread size ho hia wɔ ha, na UNC no nhyehyɛe no mma ɛnyɛ den sɛ ɛbɛtwa thread na ɛnyɛ den sɛ wobedi ho dwuma.
Ɔkwan foforo so no, Unified National Fine Thread anaa UNF no wɔ ɛnne nnyigyei a ɛyɛ ketewaa bi . Eyi kyerɛ sɛ nhama no bɛn wɔn ho wɔn ho kɛse. Wɔtaa de no UNF di dwuma bere a ɛho hia sɛ wɔde ahoɔden ne pɛpɛɛpɛyɛ a ɛkorɔn di dwuma no. Ɛtaa ba wɔ nsu-ahoɔden adwumayɛ mu efisɛ nhama a ɛyɛ fɛ no ma ɛyɛ nea ahobammɔ wom na ɛyɛ den. Ɛho hia sɛ wobɛkyerɛ thread no yie berɛ a wo ne UNF reyɛ adwuma de ahwɛ sɛ ɛne ne ho hyia na ɛyɛ adwuma.
Unified National Special Thread anaa UNS yɛ foforo Amerika asaawa a ɛda nsow esiane sɛnea wɔayɛ no sɛnea wɔpɛ nti. UNS nyɛ gyinapɛn te sɛ UNC anaa UNF , na ɛma kwan ma nsakrae ba asaawa no nne ne ne kɛse mu. Saa nsakraeɛ yi ma UNS yɛ kɔ-kɔ ma dwumadie titire a ɛwɔ baabi a standard thread sizes nnɔɔso. Thread identification ma UNS hwehwɛ sɛ wosusuw pɛpɛɛpɛ, mpɛn pii no wɔde pitch gauge anaa caliper di dwuma.
| Dash Size (Nominal Size) | Thread Pitch | Ɔbarima Thread OD mm | Ɔbarima Thread OD inches | Ɔbea Thread ID mm | Ɔbea Thread ID inches |
|---|---|---|---|---|---|
| -02 (1/8) na ɛyɛ. | 27 | 10.3 | 0.41 | 9.4 | 0.37 |
| -04 (1/4) na ɛyɛ. | 18 | 13.7 | 0.54 | 12.4 | 0.49 |
| -06 (3/8) na ɛyɛ. | 18 | 17.3 | 0.68 | 15.7 | 0.62 |
| -08 (1/2) na ɛwɔ hɔ. | 14 | 21.3 | 0.84 | 19.3 | 0.76 |
| -10 (5/8) na ɛyɛ. | 14 | 22.9 | 0.90 | 21.1 | 0.83 |
| -12 (3/4) na ɛwɔ hɔ. | 14 | 26.9 | 1.06 | 24.9 | 0.98 |
| -16 (1) . | 111⁄2 na ɛyɛ | 33.3 | 1.31 | 31.5 | 1.24 |
| -20 (1 1⁄4) . | 111⁄2 na ɛyɛ | 42.2 | 1.66 | 40.1 | 1.58 |
| -24 (1 1⁄2) . | 111⁄2 na ɛyɛ | 48.3 | 1.90 | 46.2 | 1.82 |
| -32 (2) . | 111⁄2 na ɛyɛ | 60.4 | 2.38 | 57.9 | 2.29 |
**OD = Abɔnten Ntrɛwmu ID = Mfinimfini Ntrɛwmu
Sɛ yɛkɔ Amerika Pipe Threads , Ɔman Taper Pipe Threads no ho hia yiye. Ahorow atitiriw abien na ɛwɔ hɔ: NPT ne NPTF . Wɔn baanu nyinaa yɛ tapered thread types a ɛkyerɛ sɛ wɔyɛ nsɔano bere a wɔkyekyere wɔn denneennen no. NPT , anaa National Taper Pipe , abu so na ɛhwehwɛ sɛ wɔde nneɛma foforo kata so. NPTF , anaa National Taper Pipe Dryseal , sɛnea ɛbɛyɛ a ɛbɛyɛ nsɔano a ɛyɛ den a wɔmfa nneɛma foforo a wɔde bɛkata so. Wɔayɛ NPT ne NPTF ho hia wɔ nsu-tumi adwumayɛ mu ma hose fittings , tube fittings , ne pipe nkitahodi. Thread pitch gauge yɛ adwinnade a ɛho hia ma thread identification nhyehyɛe wɔ NPT ne NPTF nhyehyɛe nyinaa mu.
yi ntease Amerikafo nhama ahorow yɛ ade titiriw ma adwumayɛfo a wɔwɔ nnwuma pii mu. SAE Unified Threads a ka ho UNC , UNF ne UNS ne NPT ne NPTF di dwuma titiriw wɔ nhama a wɔde kyekyere nneɛma ne nkitahodi a wɔde hyɛ mu a wɔyɛ mu . a ɛfata Thread identification hwɛ hu sɛ components no hyɛ yiye na ɛyɛ adwuma sɛnea wɔahyɛ da ayɛ no.
Britania Standard Whitworth Coarse (BSW) , a wɔtaa frɛ no WW ma Whitworth no yɛ asaawa ho nsɛm a ɛwɔ abakɔsɛm a ɛyɛ anigye. Ɛyɛ wiase no mu asaawa a wɔde skru ayɛ a edi kan a wɔahyɛ da ayɛ , a na ɔyɛɛ no Joseph Whitworth wɔ 1841. Nsusuwii no yɛɛ nsakrae kɛse, na ɛde gyinapɛn bi sii hɔ maa nhama a wɔde kyekyere nneɛma wɔ Britania Ahemman no nyinaa mu ne akyirikyiri. no bɛyɛɛ Whitworth asaawa sen biara no mu biako asaawa ahorow a ɛho hia , a nea ɛda nsow ne ne asaawa no anim a ɛyɛ digrii 55 ne ne ntini ne ntini a ɛyɛ kurukuruwa. Saa abakɔsɛm mu nhama nhyehyɛe yi na ɛtoo fapem maa nhama ahorow pii a abu so a yehu nnɛ.
Sɛ yɛkɔ British Standard Fine (BSF) , saa asaawa su yi titiriw yɛ BSW no fã a ɛyɛ fɛ. Esiane sɛ na ketewaa bi ɛnne nnyigyei a ɛyɛ kwan a ɛda nhama a ɛbɛn ho ntam nti , wɔyɛɛ BSF sɛnea ɛbɛyɛ a ɛbɛma wɔanya pɛpɛɛpɛyɛ ne ahoɔden a ɛkorɔn wɔ dwumadie a asaawa kɛseɛ ho hia mu . no Diameter titiriw da so ara te sɛ BSW, nanso ɛnne a ɛyɛ fɛ no ma kwan ma wɔde nhama pii ba nsateakwaa biara mu, na ɛno kyerɛ sɛ ɛyɛ den na ɛyɛ den. BSF di dwuma wɔ kar adwumayɛ mu, baabi a pɛpɛɛpɛyɛ yɛ ade titiriw. Wɔtaa de
| Dash Size (Nominal Size) | Thread Pitch | Ɔbarima Asaawa OD mm | Ɔbarima Asaawa OD nsateakwaa | Ɔbea Asaawa ID mm | Ɔbea Asaawa ID nsateakwaa |
|---|---|---|---|---|---|
| -02 (1/8) na ɛyɛ. | 28 | 9.7 | 0.38 | 8.9 | 0.35 |
| -04 (1/4) na ɛyɛ. | 19 | 13.2 | 0.52 | 11.9 | 0.47 |
| -06 (3/8) na ɛyɛ. | 19 | 16.5 | 0.65 | 15.2 | 0.60 |
| -08 (1/2) na ɛwɔ hɔ. | 14 | 20.8 | 0.82 | 19.1 | 0.75 |
| -10 (5/8) na ɛyɛ. | 14 | 22.4 | 0.88 | 20.3 | 0.80 |
| -12 (3/4) na ɛwɔ hɔ. | 14 | 26.4 | 1.04 | 24.6 | 0.97 |
| -16 (1) . | 11 | 33.0 | 1.30 | 31.0 | 1.22 |
| -20 (1 1⁄4) . | 11 | 41.9 | 1.65 | 39.6 | 1.56 |
| -24 (1 1⁄2) . | 11 | 47.8 | 1.88 | 45.5 | 1.79 |
| -32 (2) . | 11 | 59.7 | 2.35 | 57.4 | 2.26 |
British Standard Pipe (BSP) , a wɔsan frɛ no G , yɛ bi a ɛne ne ho di nsɛ asaawa a wɔtaa de di dwuma wɔ nsu-ahoɔden adwumayɛ mu . Nea ɛnte sɛ taper nhama no, BSP nhama no kura ne kɛse koro fi awiei kosi awiei, na ɛma ɛyɛ nhama a ɛne ne ho di nsɛ . Saa nhyehyɛe yi ho hia kɛse ma hose fittings ne tube fittings , baabi a ɛho hia sɛ wɔde nsɔano a ɛkɔ so daa . Wɔtaa de BSP toto American Pipe Threads ho , nanso wontumi nsesa esiane nsonsonoe a ɛwɔ nhama no su ne ɛnne nnyigyei mu nti.
| BSP Asaawa Kɛse | Abɔnten Ntrɛwmu | TPI |
|---|---|---|
| 1/16 Inch BSP na ɛwɔ hɔ | 7.7 mm / 0.304′′ na ɛwɔ hɔ. | 28 |
| 1/8 Inch BSP na ɛyɛ | 9.7 mm / 0.383′′. | 28 |
| 1/4 Inch BSP na ɛyɛ | 13.16 mm / 0.518′′ | 19 |
| 3/8 Inch BSP na ɛwɔ hɔ | 16.66 mm / 0.656′′ | 19 |
| 1/2 Inch BSP na ɛyɛ | 20.99 mm / 0.825′′ | 14 |
| 5/8 Inch BSP na ɛwɔ hɔ | 22.99 mm / 0.902′′ | 14 |
| 3/4 Inch BSP na ɛyɛ | 26.44 mm / 1.041′′ . | 14 |
| 7/8 Inch BSP na ɛyɛ | 30.20 mm / 1.189′′ | 14 |
| 1 Inch BSP na ɛwɔ hɔ | 33.25 mm / 1.309′′ | 11 |
| 1-1/4 Inch BSP a ɛyɛ nsateakwaa | 41.91 mm / 1.650′′ | 11 |
| 1-1/2 Inch BSP a ɛyɛ nsateakwaa | 47.80 mm / 1.882′′ | 11 |
| 2 Inch BSP a ɛyɛ nsateakwaa | 59.61 mm / 2.347′′ | 11 |
| 2-1/4 Inch BSP a ɛyɛ nsateakwaa | 65.71 mm / 2.587′′ | 11 |
| 2-1/2 Inch BSP a ɛyɛ nsateakwaa | 75.18 mm / 2.96′′ | 11 |
| 3 Inch BSP a ɛyɛ nsateakwaa | 87.88 mm / 3.46′′ | 11 |
| 4 Inch BSP a ɛyɛ nsateakwaa | 113.03 mm / 4.45′′ na ɛwɔ hɔ. | 11 |
| 5 Inch BSP a ɛyɛ nsateakwaa | 138.43 mm / 5.45′′ ne ne kɛse. | 11 |
| 6 Inch BSP a ɛyɛ nsateakwaa | 163.83 mm / 6.45′′ | 11 |
Nea etwa to no, British Standard Pipe Taper (BSPT) , a wogye tom sɛ R , yɛ asaawa a ɛyɛ teateaa a wɔde di dwuma wɔ pii mu paipu nkitahodi . Taper no ma nsɔano ba denam asaawa nhama a ɛhyɛ a ɛyɛ ɔbarima no ma ɛkɔ ɔbea asaawa no mu so , na ɛma ɛyɛ nea nsu ntumi nkɔ mu. BSPT abu so titiriw wɔ nsu-ahoɔden adwumayɛbea , baabi a sɛ wosiw nsu a ɛtwetwe ano no ano. ɛho hia The tapered angle hwɛ hu sɛ asaawa biara tighens kɔ nea edi hɔ no, ma ahotoso nkitahodi ma pipe , tube , ne fitting nkitahodi.
Wɔ yi mu biara mu no, Britania Whitworth nhama , nhama a wobehu no ho hia. nnwinnade te sɛ pitch gauge anaa caliper di dwuma de Wɔtaa de kyerɛ asaawa no su ne ne kɛse. Nteaseɛ a ɛfa geometric parameters a ɛwɔ saa nhama yi mu, fi major diameter kɔsi pitch diameter , ho hia na ama wɔahwɛ ahu sɛ ɛne nhama no hyia na ɛyɛ adwuma wɔ threaded assemblies mu. Sɛ́ ɛyɛ abakɔsɛm mu mfiri anaa nnɛyi dwumadie mu no, Britania Standard Threads da so ara yɛ ade titire wɔ nnwuma ahodoɔ mu, egyina nhama ahodoɔ foforɔ a ɛho hia te sɛ ISO thread ahodoɔ , Metric ISO thread , ne Amerika thread ahodoɔ nkyɛn.
Nhama a wɔde fa nsu mu no yɛ ade titiriw a ɛma wɔhwɛ hu sɛ wɔde nkitahodi a ɛmma nsu nkɔ mu wɔ nsu ho nhama ne gas a wɔde si hɔ no mu. Wɔyɛ ade titiriw a ɛma wɔde paipu, valve, ne nneɛma a wɔde hyɛ mu bom yiye. Thread kɛseɛ ho hia wɔ saa dwumadie yi mu, ɛfiri sɛ ɛsɛ sɛ ɛdi nsuo a ɛsen ne nhyɛsoɔ a wɔhwehwɛ wɔ nhyehyɛeɛ no mu no ho dwuma.
Sɛ yɛka paipu nhama ho asɛm a , yɛtaa ka ahorow abien ho asɛm: nhama a ɛyɛ teateaa ne nhama a ɛyɛ kɔntɔnkrɔn . Asaawa a ɛyɛ teateaa , a wɔsan frɛ no National Taper Pipe (NPT) , no kɛse so tew nkakrankakra fi n’awiei biako, na ɛma nsɔano a emu yɛ den bere a nhama no hyɛ mu no. Nhama a ɛte sɛ kɔndua no te sɛ nea ɛte sɛ kɔne kakra, na ɛde ahoɔden foforo ka nkitahodi no ho.
paipu nhama a ɛyɛ teateaa di dwuma wɔ Wɔtaa de nsu a wɔde yɛ adwuma mu . Wɔnam nhama a ɛde ne ho hyɛ mu no so na ɛyɛ nsɔano. Pipe dope anaa Teflon tape taa yɛ adwuma sɛ nneɛma a wɔde siw ano de hwɛ hu sɛ nkitahodi a enni nsu mu.
Nea ɛne eyi bɔ abira no, nhama a wɔde paipu ayɛ a ɛte sɛ conical no ntaa mma nanso ɛda so ara ho hia. Wɔtaa hu wɔ mmeae pɔtee bi a nhyɛso ne mfiri ahoɔden a wɔhwehwɛ no yɛ kɛse.
Thread identification ho hia kɛse wɔ paipu nhyehyɛe ahorow a wɔhwɛ so na wɔboaboa ano no mu. Wobetumi de pitch gauge anaa caliper adi dwuma de akyerɛ asaawa no su ne ne kɛse. Sɛ nhwɛso no, American Pipe Threads ne SAE Unified Threads yɛ nhama ahorow a wɔtaa de di dwuma a ɛwɔ su soronko.
Wɔde Amerikafo nhama ahorow te sɛ NPT di dwuma kɛse wɔ Amerika Atifi fam nyinaa. Wɔdi Unified thread standard , a ɛka ho ne Unified National Coarse Thread (UNC) ne Unified National Fine Thread (UNF) akyi..
British Standard Pipe Taper (BSPT) ne British Standard Whitworth (BSW) nhama, a British Standard Whitworth Coarse (BSWC) ka ho , yɛ Britania nhama ahodoɔ a ɛwɔ dwumadie pɔtee bi, titire wɔ United Kingdom ne Commonwealth aman mu.
Sɛnea nne kɛse te bi ne paipu asaawa no yɛ ade a ɛho hia a wɔde susuw. Ɛyɛ ntwemu no adwene mu cylinder a asaawa no mu duru ne yɛ pɛ asaawa no ahunmu . Sɛ wopɛ sɛ wosusuw nneɛma pɛpɛɛpɛ a, wɔde afiri a wɔde kyerɛ ɛnne nnyigyei anaa caliper na edi dwuma.
Mmarima nhama ne ɔbea nhama yɛ nsɛmfua a wɔde kyerɛkyerɛ abɔnten nhama ntwemu ne emu nhama , sɛnea ɛte biara. Wohu mmarima nhama wɔ paipu anaa nneɛma a wɔde hyɛ mu no akyi, bere a mmea nhama wɔ mu.
Nhama a wɔde nsa nifa yɛ ne gyinapɛn a ɛwɔ nnwuma no mu, baabi a asaawa no mu yɛ den wɔ dɔn no kwan so. nhama ntaa ntaa na ɛyɛ den sɛnea ɛne dɔn no bɔ abira. Benkum so
l Fa pitch gauge di dwuma bere nyinaa de si asaawa no nne ne ne ntwemu so dua.
l Hwɛ sɛ wɔde aduru a wɔde siw ano nhama a ɛyɛ asɔ teateaa no ano yiye.
l Sɛ wopɛ sɛ wode di dwuma wɔ nhyɛso kɛse mu a, susuw nhama a ɛte sɛ conical ho ma wɔn ahoɔden a ɛkɔ soro.
l Hu nnwuma gyinapɛn ahorow a ɛfa instɔlehyɛn pɔtee a woreyɛ ho adwuma no ho.
l Fa a ɛfata di dwuma thread identification process de siw nkitahodi a ɛnhyia ano.
Nsonsonoe a ɛda paipu nhama a ɛyɛ tapered ne conical ntam no ntease ho hia ma obiara a ɔwɔ nsu ho nhama anaa gas a wɔde si hɔ no. yie Thread a wɔbɛhunu ne paw no bɛtumi asiw nsuo a ɛbɛtu ano, ahwɛ sɛ nhyehyɛeɛ no yɛ pɛpɛɛpɛ, na ɛkura ahobanbɔ gyinapɛn mu wɔ saa dwumadie a ɛho hia yi mu.
Sɛ ɛba nhama ahorow so a, yɛn mu dodow no ara nim ahorow a ɛtaa ba a yehyia wɔ nneɛma a wɔde di dwuma da biara da te sɛ bolt ne nnuadewa mu no. Nanso, wiase bi wɔ hɔ a nhama ahorow a ɛyɛ den kɛse a edi dwuma titiriw wɔ nnwuma ahorow mu. Momma yɛnkɔhyɛ saa nhama ahorow a ɛkɔ anim yi bi mu ne wɔn dwumadie soronko.
Wonim acme nhama sɛ ɛyɛ trapezoidal, na ɛma ɛyɛ den na ɛfata yiye ma nnesoa a emu yɛ duru sen nhama a wɔde skru ayɛ a wɔtaa de di dwuma no . Wɔtaa hu wɔ mfiri te sɛ vices ne jacks a ahoɔden ne ahoɔden a ɛtra hɔ kyɛ na ɛho hia sen biara mu.
Nhama a wɔde yɛ nsateaa yɛ soronko wɔ wɔn atifi ne ntini a ɛyɛ kurukuruwa no ho. Wɔtaa de di dwuma wɔ mmeae a ebia wobetumi de nhama adi dwuma wɔ ɔkwan a ɛyɛ den so anaasɛ ɛsɛ sɛ ɛyɛ mmerɛw sɛ wɔbɛhohoro ho, te sɛ aduan ne anonne adwumayɛbea ahorow.
Buttress nhama wɔ nhyehyɛe bi a ɛma wotumi de ahoɔden kɛse kɔ ɔkwan biako so. Wɔn ne kɔ-kɔ thread ma applications te sɛ presss baabi a wuhia threads no di tumi pii ho dwuma wɔ linear kwan so.
Worm nhama ho hia wɔ nhyehyɛe ahorow a ɛsɛ sɛ kankyee a ɛkyinkyini dan kɔ nea ɛyɛ linear mu. Wɔyɛ ade titiriw wɔ gear nhyehyɛe mu, te sɛ nea wohu wɔ tuning nnwinnade anaa elevators mu.
Asaawa biara a ɛkɔ akyiri di atirimpɔw pɔtee bi ho dwuma, na mpɛn pii no wɔyɛ no ma ɛne nnwuma pɔtee bi ahiade hyia.
l Acme nhama nnyɛ den kɛkɛ; wɔde pɛpɛɛpɛyɛ nso ma, na ɛma ɛyɛ nea eye ma nsu-ahoɔden adwuma no.
l Knuckle threads, a ɛtumi gyina ɔsɛeɛ ano no ho hia wɔ kuayɛ mu baabi a mfiri hyia tebea a emu yɛ den.
l Buttress threads ho hia wɔ metalworking mfiri mu esiane sɛ etumi gyina axial thrust a ɛkorɔn ano nti.
l Worm threads are the backbone of motion control systems , ɛdi dwuma titire wɔ nnwuma te sɛ kar ne ahunmu.
Advanced thread types nyɛ dwumadie nko ara; ɛfa pɛpɛɛpɛyɛ ne ahotoso a ɛwɔ mmeae a wɔde sika kɛse gu mu ho.
l Wimhyɛn adwumayɛkuo de wɔn ho to saa nhama titire yi so ma wimhyɛn no afã ahodoɔ no ahobanbɔ ne dwumadie.
l Wɔ po so adwumayɛ mu no , sɛnea saa nhama yi kyɛ no ho hia na ama wɔatumi agyina nkyene nsu a asɛe a atwa yɛn ho ahyia ano.
l no Aduruyɛ adwuma de nhama a ɛkɔ akyiri di dwuma wɔ nnwinnade a egye nkwa mu, baabi a huammɔdi nyɛ ɔkwan a wobetumi afa so.
l gyina Ahoɔden adwuma no saa nhama yi so de siesie mfiri a emu yɛ duru na wɔde di dwuma.
Bere a wonim nhama ahorow a wɔtaa de di dwuma te sɛ ISO metric thread anaa American Pipe Threads yiye no, ɛyɛ saa nhama a ɛkɔ anim yi na ɛtaa di anim wɔ dwumadie soronko mu. Thread size matters , na saa ara na asaawa ko a wɔde di dwuma no nso ho hia. Sɛ́ ɛyɛ Acme asaawa a ɛwɔ lathe mu anaasɛ Worm asaawa a ɛwɔ gearbox mu no, ntease ahorow a ɛho hia yi ho hia ma mfiridwumayɛfo ne mfiridwumayɛfo a wɔwɔ nnwuma ahorow mu. Sɛ wopaw asaawa a ɛfata—sɛ́ ɛyɛ asaawa a ɛne ne ho di nsɛ anaasɛ asaawa a ɛyɛ teateaa —betumi ama nsonsonoe nyinaa aba sɛnea afã horow a wɔde nhama ayɛ no yɛ adwuma ne ne nkwa tenten mu.
ntease Nhama a wɔde nhama ayɛ no geometric parameters ho hia kɛse ma obiara a ɔde nhama afã horow yɛ adwuma . Sɛ́ ebia wowɔ fluid-power industry mu anaasɛ woredi thread fasteners ho dwuma , nim a wunim saa parameters yi hwɛ hu sɛ ɛne ne ho hyia na ɛyɛ adwuma.
no Diameter titiriw kyerɛ nneɛma a ɛyɛ kɛse sen biara a ɛwɔ skru asaawa mu . Ɛyɛ akyi ntwemu anaasɛ a ɛyɛ ɔbarima asaawa a ɛyɛ ɔbea ntwemu kɛse sen biara asaawa . Nea ɛne eyi bɔ abira no, ne ntwemu ketewaa no ne asaawa no ntwemu ketewaa bi. Ɛyɛ adwene mu cylinder a ɛka asaawa a atifi kɛkɛ ɛwɔ akyi no anaasɛ asaawa a ɛwɔ no asaawa a ɛwɔ mu so . kɛse Asaawa kɛse ho hia ; enti, saa ntwemu yi a wobenya no yiye no ho hia.
Pitch diameter yɛ parameter a ɛho hia a ɛda diameter akɛse ne nketewa ntam. Ɛyɛ co-axial cylinder a wɔde wɔn adwene bu no ntwemu a kwan a efi pitch diameter intercept a ɛwɔ ɔfã biako kosi thread pitch a ɛwɔ ɔfã a ɛne no bɔ abira no yɛ pɛ. no Pitch diameter ho hia efisɛ ɛboa ma wɔkyerɛ asaawa no na ɛhwɛ hu sɛ ɛne ne ho hyia yiye.
Thread pitch yɛ linear kwan a ɛda abien a ɛbɛn ho nneɛma wɔ thread no so wɔ axial plane mu . Ɛyɛ ade a wɔde susuw nhama dodow a ɛwɔ ne tenten biara mu tẽẽ na ɛho hia kɛse ma nhama a wɔde hu . Wɔ metric nhyehyɛe mu no , wɔkyerɛkyerɛ ɛnne nnyigyei mu wɔ milimita mu, bere a wɔ imperial unit-based systems te sɛ SAE Unified Threads anaa American Pipe Threads , wɔda no adi sɛ nhama dodow a ɛwɔ inch biara mu. pitch gauges di dwuma de susuw saa parameter yi pɛpɛɛpɛ. Wɔtaa de
Kɔbere yɛ kwan a skru asaawa bi fa ne kwan so a ɛkyinkyini pɛnkoro koraa. Wɔ skru a ɛwɔ asaawa biako fam no, kɔbere no ne ɛnne no yɛ pɛ. Nanso, wɔ skru a ɛwɔ nhama abien fam no , nea edi kan no yɛ nea ɛboro nnyigyei no mmɔho abien. Saa adwene yi ho hia ma dwumadie a ɛhwehwɛ sɛ wɔde mfiridwuma mu mfasoɔ di dwuma.
Nsõ no anim a wɔsan frɛ no asaawa no anim no yɛ anim a ɛda asaawa no afã horow ntam . te Nhama ahorow sɛ Metric ISO nhama , British Whitworth nhama , anaa Unified nhama gyinapɛn wɔ gyinapɛn afã horow a ɛsono emu biara. Sɛ nhwɛso no, metric nhama taa nya digrii 60 , bere a British Standard Whitworth Coarse nhama no wɔ digrii 55 . Sɛnea ɛse no te ne sɛnea ɛte no nya asaawa no geometry ne n’ahoɔden so nkɛntɛnso.
Geometric parameters te sɛ major diameter , minor diameter , pitch diameter , thread pitch , ne tooth angle di dwuma titiriw wɔ asaawa nhyehyɛe mu . Wɔde saa nsusuiɛ yi di dwuma wɔ nhama ahodoɔ mu , a parallel thread , tapered thread , ISO thread types , ne American thread types ka ho . Nteaseɛ a ɛfata ne susuw a wɔde nnwinnade te sɛ calipers ne pitch gauges bedi dwuma wɔ saa nsusuwii ahorow yi ho no ho hia na ama wɔahwɛ ahu sɛ wɔde asaawa a wɔde hu ade yiye na ɛne nneɛma a wɔde hyɛ mu te sɛ hose fittings , pipe ne tube fittings no hyia Kae sɛ, wɔ , wiase no mu no nhama , pɛpɛɛpɛyɛ ne ade titiriw.
When dealing with threads , ɛho hia sɛ wuhu sɛ woreyɛ adwuma ne parallel anaa tapered thread ahorow. Nhama a ɛne ne ho di nsɛ no kura ne kɛse koro no ara mu fi awiei kosi awiei, bere a nhama a ɛyɛ teateaa no brɛ ase, na ɛyɛ nketewa bere a ɛrekɔ awiei no. Sɛ wopɛ sɛ wuhu nsonsonoe a, hwɛ yiye. Nhama a ɛne ne ho di nsɛ no bɛyɛ te sɛ nea ɛyɛ pɛ, bere a ɛbɛyɛ te sɛ nea nhama a ɛyɛ teateaa no ahyiam.
Sɛ wopɛ mfiridwuma ho ɔkwan a, fa caliper di dwuma . Sua ne kɛse wɔ mmeae ahorow a asaawa no wɔ. Sɛ susuw no yɛ pɛ a, ɛyɛ asaawa a ɛne ne ho di nsɛ . Sɛ ɛso tew a, woanya asaawa a ɛyɛ teateaa . In the fluid-power industry , nsonsonoe yi a wobehu no ho hia na ama wɔahwɛ ahu sɛ wɔanya nkitahodi a ɛfata.
Asaawa a ano yɛ den ne kwan a ɛda n’atifi ntam. Sɛ wopɛ sɛ wususuw eyi a, wode afiri a wɔde kyerɛ ɛnne nnyigyei bedi dwuma . Saa adwinnade yi wɔ agyan ahorow, na ɛsono emu biara sẽ dodow wɔ nsateakwaa biara mu. Fa gauge no ne asaawa no atifi hyia kɛkɛ. Sɛ ɛfata yiye a, woahu wo nne . Saa anammɔn yi yɛ ade titiriw ma nyinaa metric nhama ne Amerika nhama ahorow .
Sɛ wopɛ sɛ wuhu asaawa no kɛse a , susuw ne kɛse titiriw —ade a ɛsõ sen biara a ɛwɔ asaawa a ɛyɛ ɔbarima anaa akyi ntwemu . Fa asaawa a ɛyɛ ɔbea di dwuma caliper ma ɛyɛ pɛpɛɛpɛ. Afei, hwehwɛ thread profile no mu . Eyi ka sẽ no nsusuwii ne asaawa geometry ho . Metric ISO asaawa ne SAE Unified Threads yɛ nhama ahorow a wɔtaa de di dwuma , a emu biara wɔ nsɛm a ɛyɛ soronko.
Awiei koraa no, kyerɛ asaawa no sɛnea nnwuma gyinapɛn ahorow kyerɛ no. Ɛho behia sɛ wuhu nominal size profile , pitch , ne sɛ ebia ɛyɛ nifa anaa benkum asaawa . Gyinapɛn a wɔtaa de di dwuma no bi ne ISO metric thread , British Standard Whitworth Coarse , ne Unified National Coarse Thread . Hwɛ nnwuma gyinapɛn ahorow no so bere nyinaa na ama pɛpɛɛpɛ woakyerɛ asaawa no .
T hread kɛseɛ ho hia wɔ hwɛ a wɔbɛhwɛ sɛ wɔde asaawa a ɛfata ahyɛ mu ma dwumadie te sɛ hose fittings ne air compressor condensate filters . no yiye Nhama a wohu yɛ tweatibo a wɔde hyɛ nkɔm siesie ne mfiridwuma ho ntetee mu wɔ nnwuma a wɔde wɔn ho to afã horow a wɔde nhama ayɛ so.
Sɛ worepaw nhama ama wo dwumadi no a, nneɛma ahorow bi na ɛba. Ɛho hia sɛ wususuw application , material compatibility , ne nnwuma gyinapɛn ahorow ho . Nea ɛsɛ sɛ wode sie w’adwenem no mu nsɛm a wɔakyekyɛ ni:
1. Thread Identification : Ɛho hia sɛ wobɛhunu thread type no yie. Fa afiri a wɔde kyerɛ asaawa no nne kɛse ne caliper a wɔde susuw ne kɛse titiriw.
2. Ahorow Ahorow : Hu nhama ahorow a wɔtaa de di dwuma . Sɛ́ ɛyɛ ISO nhama ahorow , Amerika nhama ahorow , anaa Britania Whitworth nhama , emu biara wɔ ne dwumadie pɔtee.
3. Fluid-Power Industry : Sɛ wowɔ saa sector yi mu a, ebia SAE Unified Threads bɛyɛ wo kɔ-kɔ. Wɔayɛ wɔn ama tebea horow a nhyɛso kɛse wom.
4. Thread Size Matters : Hwɛ hu bere nyinaa sɛ asaawa no kɛse ne fitting connection no hyia . Ne kɛse a ɛnteɛ betumi ama nsu a ɛretu anaasɛ nneɛma a ɛwom no asɛe.
5. Parallel thread vs. Tapered thread : Te nsonsonoe no ase. Nhama a ɛne ne ho di nsɛ no kura ne kɛse koro, bere a nhama a ɛyɛ teateaa no teateaa. Eyi ka nsɔano no ne sɛnea wɔkyerɛ asaawa no.
6. Pitch Diameter : Pitch diameter yɛ geometric parameter titiriw. Ɛyɛ adwene mu cylinder a baabi a kwan no ntam nhama yɛ pɛ.
l Nhama a Ɛnhyia : Kwati sɛ wode asaawa a ɛyɛ ɔbarima a ɛwɔ a ɛnteɛ bedi dwuma asaawa a ɛyɛ ɔbea . Eyi betumi ayi nhama no afi hɔ anaasɛ ama ɛnyɛ nea ɛfata.
l Nsa Akwankyerɛ a Wobu Ani Gu So : Nsa nifa nhama abu so, nanso wɔde benkum nhama di dwuma wɔ dwumadie bi mu. Mfa wɔn nnfrafra.
l Gyinapɛn a Wɔhwɛ So : Nnwuma gyinapɛn , te sɛ Unified thread standard anaa ISO metric thread , hwɛ hu sɛ ɛne ne ho hyia. Mma w’ani ngu wɔn so.
l Neglecting Material : Ɛsɛ sɛ nneɛma a wɔde kyekyere asaawa no ne afã horow a wɔde abɔ mu no hyia. Nneɛma a ɛne ne ho nhyia betumi asɛe anaasɛ adi nkogu.
l Nnwinnade a Wɔde Hu Asaawa a Wo werɛ Wobefi : Nnwinnade te sɛ asaawa no nne kɛse kyerɛwtohɔ ho hia. Wɔboa ma wɔkwati mfomso wɔ thread identification mu.
Kae sɛ, ɛnsɛ sɛ wobu ɔkwan a wɔfa so hu asaawa no adewa. Ɛyɛ fapem ma nkitahodi a ɛfata na ɛyɛ adwuma. Sɛ nhwɛso no, wɔ nsu a wɔde yɛ adwuma mu no, sɛ wɔde asaawa a ɛnteɛ di dwuma wɔ hose fittings anaa tube fittings so a, ebetumi ama nsu a ɛretu a ɛyɛ hu aba.
Sɛ wopaw asaawa no su a ɛfata a, ɛkyerɛ nso sɛ wubesusuw sɛnea wɔayɛ asaawa no ho. Wɔ paipu nkitahodi ho no, National Taper Pipe (NPT) ne British Standard Pipe Taper (BSPT) yɛ nhama ahorow a ɛho hia. Wɔde paipu nhama a ɛyɛ teateaa ne nea ɛte sɛ conical na ɛyɛ nsɔano a ɛyɛ den.
Nea ɛne eyi bɔ abira no, aplikeshɔn a ɛhwehwɛ sɛ wɔde nhama a ɛne ne ho di nsɛ di dwuma no betumi de ISO metric nhama anaa Unified National Coarse Thread (UNC) adi dwuma. Eyinom hwɛ hu sɛ akyi ntwemu a ɛkɔ so daa wɔ afã horow a wɔde nhama ayɛ no ho.
Nea etwa to no, mma wo werɛ mmfi nkɔmhyɛ nsiesie ne mfiridwuma ho ntetee. Sɛ wokɔ w’anim wɔ mfiridwuma IoT mu a, ebetumi aboa wo ma woapaw asaawa a ɛfata na woahwɛ so yiye. Na bere a ebia ɛbɛyɛ te sɛ nea mframa a wɔde hyɛ mframa mu a wɔde yi nsu a ɛyɛ hyew no nni abusuabɔ no, wɔn nso de wɔn ho to asaawa a wɔpaw no yiye so na ama ayɛ adwuma yiye.
Yɛatu kwan afa nhama a ɛyɛ nwonwa wiase no mu, ahwehwɛ nneɛma nketenkete a ɛma ɔkwan biara so yɛ soronko no mu. Efi Amerika Pipe Threads so kosi Metric ISO Threads so no, thread ahorow no ntease nyɛ adesua ara kwa —ɛyɛ ahiade a mfaso wɔ so. Wɔ nnwuma te sɛ fluid-power anaa manufacturing mu no, sɛ wunim wo SAE Unified Threads fi wo British Whitworth Threads mu a, ebetumi akyerɛ nsonsonoe a ɛda nea ɛfata pɛpɛɛpɛ ne mfomso a ɛho ka yɛ den ntam.
Fa eyi sɛ ɔfrɛ a ɛbɛma woayɛ ade: fa wo thread identification skills di dwuma de ma w’adwuma no nkɔ anim. Sɛ́ ebia woreyɛ hose fittings ho nhyehyɛe anaasɛ worepaw paipu a ɛfata ama tube fittings no, kae sɛ asaawa kɛse ho hia. Bere a wowɔ pitch gauge ne caliper wɔ wo nsam no, woasiesie wo ho sɛ wode ahotoso bɛkyerɛ asaawa no.
Wɔn a wɔwɔ afuw no mu no, thread identification nhyehyɛe no nyɛ sɛ wobenya nkitahodi a ɛfata a ɛfata kɛkɛ; ɛfa ahobammɔ ne adwumayɛ a etu mpɔn a wɔbɛhwɛ ahu ho. Nnwuma gyinapɛn ahorow wɔ hɔ a ɛbɛkyerɛ yɛn kwan, na nnwinnade te sɛ thread pitch gauge boa ma yɛkura saa gyinapɛn ahorow no mu. Kae sɛ, nhama ahorow no sen edin ahorow a wɔahyehyɛ ara kwa —ɛyɛ wɔn ankasa kasa, kasa a ɛkasa kyerɛ nhama biara a ɛfata no mudi mu kura.
Sɛ yɛde rewie a, nhama ahorow a ɛho hia—Parallel thread, Tapered thread, ISO thread types, American thread types, ne British Standard Threads—ne nneɛma a wɔde si dwumadie a enni ano. Bere a mfiridwuma renya nkɔso wɔ Industrial IoT ne predictive maintenance mu no, saa ara na ɛsɛ sɛ yɛn nimdeɛ a yɛwɔ wɔ thread design ho nso.
