Nhwɛsoɔ: 1156 Ɔkyerɛwfoɔ: Site Editor Bere a wɔde tintimii: 2023-12-27 Mfiase: Beaeɛ
Wɔ wiase a wɔyɛ nneɛma ne mfiridwuma mu no, nneɛma a wɔbɛma ahyiam no yɛ ade titiriw. Ɛhɔ na thread gyinapɛn ahorow ba asɛm no mu. Wɔte sɛ mmara a ɛkyerɛ sɛnea nkuruwankuruwa a ɛwɔ bolt so no ne nkuruwankuruwa a ɛwɔ nut mu no hyia. Saa mmara yi ho hia super efisɛ ɛhwɛ hu sɛ afã horow no kura mu yiye, na wobetumi adi adwuma a wɔahyɛ da ayɛ no ho dwuma a wɔrensɛe.
Momma yɛnhyɛ aseɛ denam nea thread gyinapɛn yɛ a yɛbɛte aseɛ so. Sɛ yɛbɛka no tiawa a, ɛyɛ akwankyerɛ a ɛkyerɛ sɛnea nhama a wɔde di dwuma wɔ nkɔnsɔnkɔnsɔn, nkɔnsɔnkɔnsɔn, ne nnuadewa mu no nsɛso, ne kɛse, ne sɛnea wotumi gyina ano. Fa no sɛ ɛte sɛ aduannoa ho nhoma a wɔde yɛ nhama a ɛne ne ho hyia pɛpɛɛpɛ. Saa gyinapɛn ahorow yi hwɛ hu sɛ bolt a efi adwumakuw bi mu no bɛhyɛ nut a efi adwumakuw foforo mu mu, na ama ayɛ pɛpɛɛpɛ na ayɛ pɛpɛɛpɛ wɔ nnwuma ahorow mu.
Asaawa gyinapɛn ahorow di dwuma titiriw wɔ wiase a wɔyɛ nneɛma ne mfiridwuma mu . Wɔyɛ abran a wɔantoo wɔn dwom wɔ biribiara a wɔboaboa ano fi ɛlɛtrɔnik nneɛma a ɛwɔ ɔmansin board so kosi nipadua akɛse so. wimhyɛn Wɔ nnwuma te sɛ a wɔyɛ wimhyɛn mfiri , kar , ne ahunmu hyɛn mpo mu no , gyinapɛn ahorow yi hwɛ hu sɛ fastener , bolt ne screw biara , ne mfiridwuma fã biara hyia pɛpɛɛpɛ kɛse na ahoɔden . Ɛnyɛ sɛ eyi ho hia kɛse na ama wɔanya nkitahodi a emu yɛ den nko, na mmom sɛnea ɛbɛyɛ a nso . pintinn na ahobammɔ wom nneɛma no bɛkɔ so agyina
Afei, momma yɛntu kwan ntɛmntɛm nkɔ abakɔsɛm kwan so. no Unified Thread Standard (UTS) baa adwumayɛ mu sɛ ɔkwan a wɔbɛfa so ama skru nhama ayɛ mmerɛw na wɔayɛ no pɛpɛɛpɛ wɔ United States ne Canada. Ansa na UTS reba no, na asaawa gyinapɛn ahorow pii wɔ hɔ, na na ɛyɛ basaa koraa. UTS de obiara baa kratafa koro so a na ɛwɔ ahorow atitiriw abien: Unified National Coarse (UNC) ne Unified National Fine (UNF) ..
l UNC Threads : Wonim no sɛ ɛyɛ coarse pitch, saa threads yi yɛ kɛse ma general applications. Ɛnyɛ den sɛ wɔbɛyɛ na wɔadi ho dwuma, na ɛma ɛyɛ nea nkurɔfo ani gye ho wɔ nnwuma a wohia ano aduru a wɔde kyekyere nneɛma a ebetumi agyina ahodwiriw nhyɛso ne ahoɔhare a wɔde di akɔneaba ano.
l UNF Threads : Eyinom wɔ ɛnne nnyigyei a ɛyɛ fɛ , ɛma ahoɔden a ɛkorɔn ne pɛpɛɛpɛyɛ . Wɔtaa de di dwuma wɔ nneɛma te sɛ ahunmu ne nnwinnade a wɔde di dwuma pɛpɛɛpɛ mu , baabi a milimita biara ho hia.
UNC ne UNF nhama nyinaa hyɛ Unified Screw Thread Series ase , a ɛte sɛ abusua kɛse bi a wɔde nhama nhama ayɛ a wɔayɛ sɛ ɛnyɛ adwuma wɔ biakoyɛ mu.
Sɛ wopɛ sɛ woyɛ ho mfonini wɔ w’adwenem a, fa no sɛ Screw Thread Chart . Saa nhyehyeɛ yi kyerɛ nhama akɛseɛ ne ahodoɔ nyinaa wɔ UTS ase, a Unified coarse pitch threads ne Unified fine pitch threads ka ho . Ɛyɛ kɔ-kɔ adwinnade ma engineers ne manufacturers sɛ wɔbɛyɛ thread paw a ɛfata ama wɔn application pɔtee.
Sɛ yɛbɛka no yiye a, ɛkame ayɛ sɛ asaawa gyinapɛn ahorow wɔ akyi wɔ mfiri biara mu. Sɛ nhwɛso no, wɔ ɛlɛtrɔnik mfiri mu no , sɛnea UNF nhama no yɛ pɛpɛɛpɛ no hwɛ hu sɛ nneɛma a ɛwom no hyia pɛpɛɛpɛ . Wɔ nnwuma akɛse mu, te sɛ kar anaa wimhyɛn mu , UNC nhama boa ma wɔyɛ chassis afã horow a ɛyɛ den ne engine afã horow.
Thread gyinapɛn ahorow a yɛbɛte ase, titiriw nsonsonoe a ɛda UNF ne UNC ntam no ho hia yiye. Ɛnyɛ sɛ wɔbɛma asinasin abien ahyiam kɛkɛ; ɛfa ahobammɔ a wobɛhwɛ ahu sɛ , wotumi de ho to so , na ɛyɛ adwuma yiye ho . Sɛ́ ɛyɛ adwuma a ɛyɛ pɛpɛɛpɛ kɛse wɔ ahunmu anaasɛ nhyiam kɛse wɔ mfiridwuma mu , asaawa a ɛfata - sɛ́ ɛyɛ UNF anaa UNC - betumi ama nsonsonoe nyinaa aba wɔ adwumayɛ ne nkwa tenten a ade bi yɛ mu. Sɛ yɛbɛbɔ no mua a, thread gyinapɛn te sɛ UNF ne UNC a ɛwɔ Unified Thread Standard ase no yɛ ade titiriw wɔ nneɛma a wotumi de ho to so na ahobammɔ wom a wɔyɛ mu. Wɔhwɛ hu sɛ biribiara fi skru ketewaa a ɛwɔ circuit board mu kosi kɛse bolt a ɛwɔ wimhyɛn mu so no yɛ nea ɛfata adwuma no, na ɛma ahoɔden a ɛho hia , pɛpɛɛpɛ , ne ahoɔden a ɛko tia a ehia wɔ nneɛma ahorow mu.
Unified Thread Standard (UTS) no te sɛ mmara nwoma a ɛfa nhama a wɔde di dwuma wɔ Amerika Atifi fam ho. Ɛyɛ nea ɛhwɛ hu sɛ skru a efi beae biako hyɛ nut a efi baabi foforo mu. Saa gyinapɛn yi ho hia super wɔ nnwuma te sɛ ahunmu , kar adwumayɛ mu , ne mpo wɔ ɛlɛtrɔnik mfiri mu.
UTS wɔ afã atitiriw abiɛsa:
1. Thread Form : Eyi ne sɛnea asaawa no te. Fa no sɛ nsusuwso a ɛwɔ bolt anaa skru so no. Ɛho hia efisɛ ɛno na ɛkyerɛ sɛnea afã abien bɛbom yiye.
2. Series : Eyi fa nhama ahorow ahorow no ho. Wɔ UTS mu no, ntoatoasoɔ titire mmienu na ɛwɔ hɔ - Unified National Coarse (UNC) ne Unified National Fine (UNF). Coarse series (UNC) no wɔ nhama kakraa bi wɔ inch biara mu, bere a fine series (UNF) no wɔ pii. Saa nsonsonoe yi ka sɛnea nkitahodi no mu bɛyɛ den ne sɛnea ɛbɛyɛ den no.
3. Classes of Fit : Eyi te sɛ sɛnea nhama no ntam yɛ fɛ no. Ɛfa sɛnea wɔyɛ den anaasɛ wɔyɛ loose ho. Adesua ahorow pii wɔ hɔ, na emu biara fata ma dwumadie ahodoɔ.
Wɔ Amerika Atifi fam no, UTS wɔ baabiara. Sɛnea wɔde di dwuma ni:
l Manufacturing Technique : Nnwumakuw de UTS di dwuma de yɛ nneɛma ahorow nyinaa. Efi amansin board nketewa so kosi wimhyɛn engine afã akɛse so.
l Precision Instruments : Wɔ gadgets ne mfiri a ehia super high precision , te sɛ wɔ aerospace anaa wimhyɛn mfiri , UTS boa wɔ yɛ afã horow a ɛfata pɛpɛɛpɛ.
l Kar ne Mfiridwuma : Kar, lɔre, ne mfiri a ɛwɔ adwumayɛbea ahorow mpo hia afã horow a ɛfata pɛpɛɛpɛ. UTS ma eyi ba, sɛ́ ɛyɛ engine afã horow , chassis components , anaasɛ mpo nipadua nhyehyɛe.
l Electronic Components : Wɔ gadgets nketewa mu no, UTS nso di dwuma kɛse. Ɛhwɛ hu sɛ nhama nketenkete ne nkɔnsɔnkɔnsɔn a ɛwɔ ɛlɛtrɔnik nneɛma mu no nyinaa hyia yiye.
Fa no sɛ woreyɛ robɔt. Wuhia nkɔnsɔnkɔnsɔn ne nkɔnsɔnkɔnsɔn a ɛbɛkyekyere no denneennen. Wobɛpaw UNC anaa UNF asaawa a ɛfata a egyina nea robɔt no bɛyɛ so. So ebehia sɛ egyina ahodwiriw adwennwen pii ano ? Anaasɛ ɛsɛ sɛ ɛyɛ pɛpɛɛpɛ ankasa? UTS kyerɛ wo kwan wɔ saa nneɛma a wobɛpaw yi mu.
UTS te sɛ kasa a wɔn a wɔyɛ nneɛma wɔ Amerika Atifi fam nyinaa ka. Ɛfa sɛ wobɛhwɛ sɛ biribiara bɛhyia pɛpɛɛpɛ, sɛ́ ɛyɛ nkɔnsɔnkɔnsɔn ketewaa bi a ɛwɔ smartphone mu anaasɛ bolt kɛse bi a ɛwɔ wimhyɛn mu no. Saa gyinapɛn yi ma nneɛma kɔ so yɛ nea ahobammɔ wom, ɛyɛ den, na ɛyɛ adwuma yiye.
Momma yɛnkɔ UNF Threads , a wonim wɔn sɛ wɔn Unified Fine Pitch no mu . Saa nhama yi yɛ nhama wiase no mu adwumfo a wɔyɛ nsɛm a ɛkɔ akyiri. Wɔwɔ nhama pii wɔ nsateakwaa biara mu sen UNC nhama , a ɛkyerɛ sɛ ɛyɛ fɛ na ɛbɛn wɔn ho wɔn ho. Saa adwini fɛfɛ yi nyɛ nea wɔde kyerɛ ara kwa; ne nyinaa fa pɛpɛɛpɛyɛ ho.
UNF nhama ne nea wɔpaw wɔ tebea horow a pɛpɛɛpɛyɛ ne ahoɔden a ɛkorɔn yɛ ade titiriw mu. Baabi a wɔhyerɛn ni:
l Ahunmu : Wɔ wimhyɛn ne ahunmu ahyɛn mu no, ɔfã ketewaa biara ho hia. Wɔde UNF nhama di dwuma wɔ ha sɛnea ɛbɛyɛ a ɛyɛ pɛpɛɛpɛ.
l Precision Instruments : Susuw mfiri a ɛwɔ labs anaa aduruyɛ nnwinnade mu ho. UNF nhama boa saa mfiri yi ma ɛyɛ pɛpɛɛpɛ na wotumi de ho to so.
l Kar Yɛ : Wɔ kar mu, titiriw wɔ engine afã horow ne ɛlɛtrɔnik nneɛma mu , UNF nhama ma ɛfata pɛpɛɛpɛ a ehia.
l Electronic Equipment : Wɔ nketewa mpo mu no circuit board , UNF nhama ho hia ma biribiara a ɛbɛkɔ so abɔ mu denneennen.
Sɛ yɛka UNF nhama no nsusuwii ho asɛm a, yɛrehwɛ Screw Thread Chart . Saa nhyehyeɛ yi kyerɛ akɛseɛ nyinaa - ntwemu, ɛnne nnyigyei, ne ne tenten. UNF nhama no ntwemu betumi afi nketewa paa so akosi akɛse koraa, nanso ade titiriw no ne ɛnne a ɛyɛ fɛ no - nhama pii wɔ skru no nsateakwaa biara mu.
Wɔ wiase a wɔyɛ nneɛma a ɛkorɔn mu no, UNF nhama te sɛ VIP ahorow no. Wɔde ma:
l Ahoɔden a Ɛkorɔn : Esiane sɛ wɔn nne yɛ fɛ nti, wotumi di adesoa ne adwennwen pii ho dwuma.
l Tight Connection : Nhama pii kyerɛ sɛ wobɛkura mu denneennen. Eyi ho hia kɛse wɔ afã horow a ɛnsɛ sɛ ɛsansan mu, titiriw wɔ wosow ase.
l Precision : Sɛ nhama pii wɔ hɔ a, hokwan a ɛwɔ hɔ sɛ ɛbɛkɔ anaasɛ ɛnyɛ pɛpɛɛpɛ no sua. Eyi ho hia wɔ nnwinnade a wɔde yɛ nneɛma pɛpɛɛpɛ ne ahunmu mfiri mu.
Fa no sɛ woreboaboa afiri a wɔde di dwuma a wɔfrɛ no drone a wɔde mfiridwuma mu nimdeɛ a ɛkorɔn ayɛ ano. Ɛsɛ sɛ ɔfã biara hyia pɛpɛɛpɛ. UNF nhama boa wo ma wobɔ ɔfã biara pɛpɛɛpɛ, na ɛma wohwɛ hu sɛ drone no gyina na wotumi de ho to so.
UNF nhama ANSI B1.1
| Nhama Kɛseɛ (in) | Nhama a ɛwɔ nsateakwaa biara mu (tpi) | Nhama kɛseɛ (in) | Ntrɛmu kɛseɛ (mm) | Tap Drill Size (mm) | Pitch (mm) |
|---|---|---|---|---|---|
| #0 - 80 na ɛwɔ hɔ | 80 | 0.060 | 1.524 | 1.25 | 0.317 |
| #1 - 72 na ɛwɔ hɔ | 72 | 0.073 | 1.854 | 1.55 | 0.353 |
| #2 - 64 na ɛwɔ hɔ | 64 | 0.086 | 2.184 | 1.90 | 0.397 |
| #3 - 56 na ɛwɔ hɔ | 56 | 0.099 | 2.515 | 2.15 | 0.453 |
| #4 - 48 na ɛwɔ hɔ | 48 | 0.112 | 2.845 | 2.40 | 0.529 |
| #5 - 44 na ɛwɔ hɔ | 44 | 0.125 | 3.175 | 2.70 | 0.577 |
| #6 - 40 na ɛwɔ hɔ | 40 | 0.138 | 3.505 | 2.95 | 0.635 |
| #8 - 36 na ɛwɔ hɔ | 36 | 0.164 | 4.166 | 3.50 | 0.705 |
| #10 - 32 na ɛwɔ hɔ | 32 | 0.190 | 4.826 | 4.10 | 0.794 |
| #12 - 28 na ɛwɔ hɔ | 28 | 0.216 | 5.486 | 4.70 | 0.907 |
| 1/4' - 28 na ɛwɔ hɔ | 28 | 0.250 | 6.350 | 5.50 | 0.907 |
| 5/16' - 24. Ɔde ne nsa kyerɛɛ ne so | 24 | 0.313 | 7.938 | 6.90 | 1.058 |
| 3/8' - 24 na ɛwɔ hɔ | 24 | 0.375 | 9.525 | 8.50 | 1.058 |
| 7/16' - 20. Ɔde ne nsa kyerɛɛ ne so | 20 | 0.438 | 11.112 | 9.90 | 1.270 |
| 1/2' - 20 na ɛwɔ hɔ | 20 | 0.500 | 12.700 | 11.50 | 1.270 |
| 9/16' - 18. Ɔde ne nsa kyerɛɛ ne so | 18 | 0.563 | 14.288 | 12.90 | 1.411 |
| 5/8' - 18. Ɔde ne nsa kyerɛɛ ne so | 18 | 0.625 | 15.875 | 14.50 | 1.411 |
| 3/4' - 16. Ɔde ne nsa kyerɛɛ ne so | 16 | 0.750 | 19.050 | 17.50 | 1.587 |
| 7/8' - 14 na ɛwɔ hɔ | 14 | 0.875 | 22.225 | 20.40 | 1.814 |
| 1' - 12 na ɛyɛ | 12 | 1.000 | 25.400 | 23.25 | 2.117 |
| 1 1/8' - 12. Ɔde ne nsa kyerɛɛ ne so | 12 | 1.125 | 28.575 | 26.50 | 2.117 |
| 1 1/4' - 12. Ɔde ne nsa kyerɛɛ ne so | 12 | 1.250 | 31.750 | 29.50 | 2.117 |
| 1 3/8' - 12. Ɔde ne nsa kyerɛɛ ne so | 12 | 1.375 | 34.925 | 32.75 | 2.117 |
| 1 1/2' - 12. Ɔde ne nsa kyerɛɛ ne so | 12 | 1.500 | 38.100 | 36.00 | 2.117 |
Sɛ yɛbɛbɔ no mua a, UNF nhama no nyinaa fa nsɛm a ɛkɔ akyiri ne pɛpɛɛpɛyɛ ho. Wɔyɛ abran a wɔmmɔ wɔn dwom wɔ mfiridwuma mu nimdeɛ a ɛkorɔn ne nhyɛso kɛse pii mu, efi ahunmu bun a ɛwɔ ahunmu hyɛn mu so kosi nneɛma a ɛho hia a ɛwɔ kar engine a ɛyɛ adwuma yiye mu so. Wɔn nne a ɛyɛ fɛ ne ahoɔden a ɛkorɔn no ma ɛho nhia wɔ wiase a wɔboaboa ano pɛpɛɛpɛ ne nneɛma a wɔyɛ no yiye mu.
UNC nhama gyina hɔ ma Unified National Coarse nhama. Fa wɔn sɛ wɔn a wɔyɛ den na wotumi de ho to wɔn so wɔ asaawa abusua no mu. Wɔn nhama kakraa bi na ɛwɔ nsateakwaa biara mu sɛ wɔde toto UNF nhama ho a , a ɛkyerɛ sɛ wɔyɛ nhama a ɛyɛ mmerɛw. Saa asɛm a ɛyɛ mmerɛw yi nyɛ sintɔ; nokwarem no ɛyɛ plus kɛse wɔ tebea horow pii mu.
Ɛhe na UNC nhama no hyɛ mu? Hwɛ ntɛm ara ni:
l Adansi : Wɔ adan ne abɔntenban mu no, UNC nhama yɛ pɛpɛɛpɛ ma nneɛma a emu yɛ duru a wɔde kura mu.
l General Machinery : Wɔ mfiri a enhia super fine precision mu, te sɛ kar anaa mfiri akɛse afã horow bi no, UNC nhama yɛ adwuma no yiye.
l Nneɛma a Wɔde Di Dwuma : Nneɛma a yɛde di dwuma da biara da, te sɛ dan mu nneɛma anaa ofie mfiri, taa nya UNC nhama a ɛma ɛbom yɛ adwuma.
Wonim UNC nhama wɔ nneɛma abien ho: ahoɔden ne abodwokyɛre.
l Ahoɔden : Ɛyɛ den sɛ ɛbɛtumi akura adan akɛseɛ mu, ɛno nti na wobɛhunu wɔ adansiɛ ne mfiri a emu yɛ duru mu.
l Abodwokyɛre : Wɔde bɔne kyɛ sen nhama pa. Eyi kyerɛ sɛ wotumi di efĩ ho dwuma, nneɛma a asɛe, na ɛnyɛ den sɛ wɔbɛbɔ nkɔnsɔnkɔnsɔn na wɔabue, na ɛno yɛ kɛse wɔ mmeae a ɛhɔ yɛ den.
Sɛ ɛba sɛ wɔde UNC nhama bɛyɛ nneɛma a, nsɛm kakraa bi wɔ hɔ a ɛsɛ sɛ yɛhyɛ no nsow:
l Ɛnyɛ den sɛ wɔbɛyɛ : Ɛnyɛ den na wɔyɛ ntɛmntɛm sen nhama a ɛyɛ fɛ. Eyi yɛ asɛm kɛse bere a woreyɛ nkɔnsɔnkɔnsɔn anaa nkɔnsɔnkɔnsɔn mpempem pii no.
l Ɛka a wɔbɔ : Esiane sɛ ɛnyɛ den sɛ wɔbɛyɛ nti, mpɛn pii no, ɛho ka sua. Eyi ho hia wɔ nneɛma a wuhia fasteners pii nanso enhia super fine precision.
l Versatility : Wɔyɛ nneɛma pii. Wubetumi de UNC nhama adi dwuma wɔ nneɛma ahorow pii mu, efi mfiri a emu yɛ duru so kosi nneɛma a wɔde di dwuma da biara da so.
UNC nhama sɛnea ANSI B1.1
| Ntrɛwmu kɛse (in) | Nhama a ɛwɔ nsateakwaa biara mu (tpi) | Nhama a ɛyɛ kɛse (in) | Ntrɛwmu kɛse (mm) | Tap Drill Size (mm) | Pitch (mm) |
|---|---|---|---|---|---|
| #1 - 64 na ɛwɔ hɔ | 64 | 0.073 | 1.854 | 1.50 | 0.397 |
| #2 - 56 na ɛwɔ hɔ | 56 | 0.086 | 2.184 | 1.80 | 0.453 |
| #3 - 48 na ɛwɔ hɔ | 48 | 0.099 | 2.515 | 2.10 | 0.529 |
| #4 - 40 na ɛwɔ hɔ | 40 | 0.112 | 2.845 | 2.35 | 0.635 |
| #5 - 40 na ɛwɔ hɔ | 40 | 0.125 | 3.175 | 2.65 | 0.635 |
| #6 - 32 na ɛwɔ hɔ | 32 | 0.138 | 3.505 | 2.85 | 0.794 |
| #8 - 32 na ɛwɔ hɔ | 32 | 0.164 | 4.166 | 3.50 | 0.794 |
| #10 - 24 na ɛwɔ hɔ | 24 | 0.190 | 4.826 | 4.00 | 1.058 |
| #12 - 24 na ɛwɔ hɔ | 24 | 0.216 | 5.486 | 4.65 | 1.058 |
| 1/4' - 20 na ɛwɔ hɔ | 20 | 0.250 | 6.350 | 5.35 | 1.270 |
| 5/16' - 18. Ɔde ne nsa kyerɛɛ ne so | 18 | 0.313 | 7.938 | 6.80 | 1.411 |
| 3/8' - 16 na ɛwɔ hɔ | 16 | 0.375 | 9.525 | 8.25 | 1.587 |
| 7/16' - 14. Ɔde ne nsa kyerɛɛ ne so | 14 | 0.438 | 11.112 | 9.65 | 1.814 |
| 1/2' - 13 na ɛyɛ | 13 | 0.500 | 12.700 | 11.15 | 1.954 |
| 9/16' - 12. Ɔde ne nsa kyerɛɛ ne so | 12 | 0.563 | 14.288 | 12.60 | 2.117 |
| 5/8' - 11. Ɔde ne nsa kyerɛɛ ne so | 11 | 0.625 | 15.875 | 14.05 | 2.309 |
| 3/4' - 10 na ɛwɔ hɔ | 10 | 0.750 | 19.050 | 17.00 | 2.540 |
| 7/8' - 9 na ɛyɛ | 9 | 0.875 | 22.225 | 20.00 | 2.822 |
| 1' - 8 na ɛyɛ | 8 | 1.000 | 25.400 | 22.85 | 3.175 |
| 1 1/8' - 7 na ɛyɛ | 7 | 1.125 | 28.575 | 25.65 | 3.628 |
| 1 1/4' - 7 na ɛyɛ | 7 | 1.250 | 31.750 | 28.85 | 3.628 |
| 1 3/8' - 6. Ɛyɛ a na me ne me yere | 6 | 1.375 | 34.925 | 31.55 | 4.233 |
UNC nhama te sɛ adwuma apɔnkɔ a wotumi de ho to wɔn so wɔ nhama wiase no mu. Ebia wonni UNF nhama a ɛyɛ fɛ no, nanso wɔde wɔn ahoɔden, abodwokyɛre, ne sɛnea wotumi yɛ nneɛma pii no si ananmu. Efi abansoro adan a wobɛma agyina hɔ so kosi hwɛ a wobɛhwɛ sɛ wo adidipon so yɛ den no, UNC nhama yɛ ade titiriw a ɛho hia wɔ nneɛma a wɔyɛ da biara da ne adan akɛse nyinaa mu.
Sɛ yɛhwɛ UNF (Unified National Fine) ne UNC (Unified National Coarse) nhama a, nneɛma titiriw a ɛda nsow ne ɛnne nnyigyei ne ahoɔden.
l Pitch : UNF nhama no wɔ pitch a ɛyɛ fɛ, a ɛkyerɛ sɛ nhama pii wɔ inch biara mu. UNC nhama no yɛ mmerɛw a nhama kakraa bi na ɛwɔ inch biara mu.
l Ahoɔden : UNF nhama no nnyigyei a ɛyɛ fɛ no ma ahoɔden pii wɔ nhyɛso mu. Wotumi di ahoɔden pii ho dwuma a wonbubu sɛ wɔde toto UNC nhama ho a.
UNF ne UNC nhama a wobɛpaw no gyina baabi a wɔde bedi dwuma so.
l UNF Threads : Ɛyɛ papa ma dwumadie a ɛhia pɛpɛɛpɛyɛ ne ahoɔden a ɛkorɔn, te sɛ wɔ ahunmu anaa nnwinnadeɛ a ɛyɛ pɛpɛɛpɛ mu.
l UNC Threads : Ɛfata yie ma adansiɛ a ɛwɔ hɔ nyinaa ne nneɛma a ɛwɔ baabi a pɛpɛɛpɛyɛ ho nhia pii, nanso ɛkyɛ na ɛnyɛ den sɛ wɔde bedi dwuma ho hia.
Wɔn ankasa a wɔbɛto mu yɛ ade kɛse wɔ mmeae a ebia wosow bɛma nhama no ayɛ mmerɛw.
l UNF Threads : Wɔn nne a ɛyɛ fɛ no ma wotumi to wɔn ho so yiye, na ɛma wɔfata ma mmeae a wosow kɛse te sɛ wimhyɛn anaa mfiri.
l UNC Threads : Bere a wobetumi ayɛ wɔn ho a wɔde to wɔn ho mu no, wɔn nne a ɛyɛ mmerɛw no ma ɛnyɛ nea etu mpɔn kakra wɔ eyi mu sɛ wɔde toto UNF nhama ho a.
Nsɔano ne ahoɔden a ɛtwetwe no ho hia kɛse wɔ asaawa ko a ɛfata a wobehu mu.
l UNF Threads : Ma ahoɔden a ɛtwetwe ade a eye esiane wɔn nnyigyei a ɛyɛ fɛ nti, na ɛma nkitahodi a ɛyɛ den na ɛyɛ den.
l UNC Threads : Wɔn nne a ɛyɛ mmerɛw no ma ɛnyɛ nea ɛfata mma ahoɔden a ɛkorɔn a wɔhwehwɛ, nanso wɔda so ara yɛ adwuma yiye ma dwumadie pii.
Nhama a ɛyɛ den wɔ nsateakwaa biara mu no yɛ ade titiriw a ɛma ɛyɛ adwuma.
l UNF Threads : Thread density a ɛkorɔn kyerɛ sɛ thread a ɛyɛ fɛ, na ɛma ɛyɛ den na ɛyɛ pɛpɛɛpɛ.
l UNC Threads : Fa asaawa a ɛyɛ mmerɛw, a ɛnyɛ den sɛ wobedi ho dwuma na woayɛ, titiriw wɔ dodow a ɛdɔɔso mu no, brɛ asaawa no density ase.
Fa no sɛ wowɔ Screw Thread Chart . Saa nhyehyeɛ yi bɛkyerɛ sɛdeɛ UNF nhama no ayɛ ma a ɛbɛn a nhama dodoɔ a ɛkɔ soro wɔ nsateakwaa biara mu, berɛ a UNC nhama no wɔ ntam kwan a ɛtrɛ wɔ nhama ntam.
paw a wɔpaw wɔ UNF ne UNC nhama ntam no boils down to the specific needs of the application. UNF nhama, a ne nne yɛ fɛ no ma ahoɔden ne pɛpɛɛpɛyɛ a ɛkorɔn, a eye ma mmeae a mfiridwuma mu nimdeɛ a ɛkorɔn ne adwennwen kɛse wom. Nanso UNC nhama deɛ, ɛma ɛyɛ mmerɛw sɛ wɔde bedi dwuma na wɔayɛ, na ɛma ɛfata ma adansi ne nneɛma a wɔyɛ wɔ baabi a pɛpɛɛpɛyɛ a ɛkorɔn ho nhia saa. Nneɛma abien no nyinaa wɔ mfaso soronko, na ɛma ɛho nhia wɔ wɔn dwumadie mu.
Nea edi kan, sɛ wobɛsusuw nhama pɛpɛɛpɛ a, wuhia nnwinnade a ɛfata. Nea ɛtaa ba ne:
l Calipers : Saa nnwinnade yi susuw asaawa bi akyi ntwemu. Wɔte sɛ sodifo a wɔyɛ fɛ a wobetumi akyerɛ wo sɛnea asaawa kɛse te ankasa.
l Thread Gauges : Eyinom te sɛ templates ma threads. Wode asaawa no toto gauge no ho na ama woahu ne kɛse ne ne nne.
Sɛ wobɛhunu sɛ thread bi yɛ UNF anaa UNC a, ɛyɛ tẽẽ wɔ anammɔn yi mu:
1. Sua ne Ntwemu : Fa calipers susuw asaawa no akyi ntwemu. Eyi ma wohu sɛnea ɛtrɛw.
2. Count the Threads : Kan nhama dodow a ne tenten yɛ nsateakwaa biako. Eyi ne baabi a wuhu nsonsonoe no – UNF nhama no benya nhama pii wɔ inch biara mu sen UNC.
3. Fa Thread Gauge Di Dwuma : Fa asaawa no ne thread gauge hyia. Gauge no bɛsi ɛnne no so dua na sɛ ɛyɛ UNF (fine) anaa UNC (coarse).
4. Hwɛ Chart no : Wubetumi ahwɛ Screw Thread Chart bi ama ntotoho ntɛmntɛm. Saa nhyehyeɛ yi kyerɛ UNF ne UNC nhama nyinaa ne wɔn nnyigyei ne wɔn ntwemu.
Nsusuwii ahorow no a wobenya no yiye no ho hia yiye. Afotu bi ni:
l Siesie Nhama no : Ansa na wobɛsusu no, hwɛ sɛ nhama no ho tew. Efĩ betumi asɛe wo susuw.
l Sua Mpɛn Pii : Sɛnea ɛbɛyɛ a wobɛkwati mfomso no, susuw mpɛn abien na fa nkyɛmu.
l Fa Nnwinnade a Ɛyɛ Pa Di Dwuma : Fa sika hyɛ calipers ne gauges a ɛyɛ papa mu na ama woasusuw nneɛma a ɛyɛ pɛpɛɛpɛ.
l Tena Gyinabea : Sɛ woresusuw a, kura wo nnwinnade mu pintinn na amma woanhwe ase na woanya akenkan a ɛnteɛ.
Sɛ woreyɛ adwuma bi a, sɛ wunim sɛ wode UNF anaa UNC nhama bedi dwuma a, ebetumi ama w’adwuma no ayɛ anaasɛ asɛe. Sɛ wosusuw nhama yi na wuhu yiye a, ɛma wohwɛ hu sɛ wo fasteners no bɛfata pɛpɛɛpɛ, sɛ́ ebia woreyɛ dan mu nneɛma bi, woresiesie kar, anaasɛ woreboaboa ahunmu nneɛma mpo ano no. Nsusuwii pa ma wonya nkitahodi a emu yɛ den, ɛyɛ den, na ahobammɔ wom wɔ biribiara a wobɛbɔ anaa wobɛsiesie mu.
UNF (Unified National Fine) nhama te sɛ precision ho abenfo a wɔwɔ nhama wiase no mu. Baabi a wɔda nsow ankasa ni:
l Ahunmu ne Wimhyɛn : Wɔ wimhyɛn ne ahunmu ahyɛn mu no, ɛsɛ sɛ ɔfã ketewaa biara yɛ pɛpɛɛpɛ. Wɔde UNF nhama di dwuma wɔ engine afã horow ne nipadua no nhyehyɛe mu esiane sɛ ɛyɛ pɛpɛɛpɛ kɛse nti.
l Kar Yɛ : Wɔ kar mu, titiriw wɔ afã horow a ɛyɛ mmerɛw kɛse te sɛ ɛlɛtrɔnik nneɛma mu , UNF nhama ma nea ɛfata pɛpɛɛpɛ a ehia.
l Ɛlektrɔnik Nnwinnade : Wɔ gadgets ne mfiri ahorow ho, baabi a milimita biara bu akontaa no, UNF nhama ho hia ma wɔn pɛpɛɛpɛyɛ ne nkitahodi a emu yɛ den.
Sɛ ɛba sɛ wɔbɛyɛ fasteners pii ntɛmntɛm na wɔayɛ no yiye a, UNC (Unified National Coarse) nhama ne nea wɔkɔ:
l Adansi : Wɔ adan ne nnwuma mu no, wɔde UNC nhama di dwuma wɔ bolts ne screws mu ma ɛyɛ den na ɛnyɛ den sɛ wɔde bedi dwuma.
l General Machinery : Wɔ mfiri a ehia fasteners a ɛyɛ den na wotumi de ho to so no, UNC nhama ma ahoɔden a ɛkari pɛ na ɛyɛ mmerɛw sɛ wɔde bedi dwuma.
Asaawa biara wɔ n’ankasa tumi akɛse ma nnwuma ahorow:
l UNF Threads : Wɔ precision instruments ne aerospace , baabi a biribiara ho hia no, UNF threads ho hia ma wɔn ahoɔden ne pɛpɛɛpɛyɛ a ɛkorɔn.
l UNC Threads : Wɔ nnwuma te sɛ adansi ne mfiri a emu yɛ duru mu, baabi a ɛsɛ sɛ fasteners yɛ den na wotumi de ho to so no, UNC threads na wɔpɛ.
Ɛnyɛ bere nyinaa na nhama a wode bɛyɛ adwuma no nyɛ mmerɛw. Nsɛnnennen bi ni:
l Pɛpɛɛpɛ wɔ Mfiridwuma mu : UNF nhama a wɔyɛ no hwehwɛ sɛ wɔyɛ pɛpɛɛpɛ kɛse wɔ CNC mfiri mu . Mfomso ketewaa bi betumi ama nsakrae kɛse aba.
l Nneɛma a wɔde di dwuma ne nea wɔde bom : UNC nhama, esiane sɛ ɛyɛ mmerɛw nti, ɛnyɛ den sɛ wobedi ho dwuma nanso ɛsɛ sɛ wɔde ahwɛyiye yɛ mfiri na ama wɔahwɛ ahu sɛ ɛbɛfata yiye wɔ nneɛma a ɛyɛ den mu.
l Nneɛma a Wɔpaw : Nneɛma a wɔpaw ma UNF ne UNC nhama nyinaa ho hia yiye. Ɛka asaawa no ahoɔden , a egyina pintinn , ne sɛnea ɛko tia adwennwen.
Sɛ́ ɛyɛ UNF nhama a wɔde di dwuma pɛpɛɛpɛ wɔ ahunmu ne ɛlɛtrɔnik nneɛma mu anaasɛ UNC nhama a ɛyɛ den wɔ adansi ne mfiri mu no, abien no nyinaa di dwuma titiriw wɔ wɔn nnwuma mu. Sɛ yɛte wɔn dwumadie pɔtee ne nsɛnnennen ase a, ɛboa ma a ɛfata wɔpaw asaawa ma dwumadie soronko biara, na ɛhwɛ ma adeɛ a ɛtwa toɔ no yɛ adwuma yie na ɛyɛ ahobammɔ.
Thread type a ɛfata a wobɛpaw – UNC anaa UNF – ho hia yiye. Nea ɛsɛ sɛ wususuw ho ni:
1. Application Needs : So woreyɛ biribi a ehia sɛ wɔyɛ no pɛpɛɛpɛ kɛse, te sɛ wimhyɛn fã bi ho adwuma ? Kɔ UNF so. Sɛ wopɛ adansi a ɛkɔ akyiri a, UNC ne wo bet a eye sen biara.
2. Ahoɔden a Wɔhwehwɛ : UNF nhama ma ahoɔden pii esiane ne nne a ɛyɛ fɛ nti, na ɛma ɛyɛ nea eye ma nnwuma a nhyɛso kɛse wom.
3. Assembly Environment : Sɛ nneɛma a atwa yɛn ho ahyia no taa yɛ fĩ anaasɛ ɛsɛe a, UNC nhama a ɛyɛ mmerɛw no de bɔne kyɛ kɛse.
4. Manufacturing Capabilities : So wowɔ nnwinnade a wode bɛyɛ UNF threading pɛpɛɛpɛ? Sɛ ɛnte saa a, ebia UNC bɛyɛ nea mfaso wɔ so kɛse.
Nnwuma biara wɔ nea ɔpɛ:
l Ahunmu : Wɔtaa de UNF di dwuma esiane ne pɛpɛɛpɛyɛ ne ahoɔden a ɛkorɔn nti.
l Adansi : Wɔpɛ UNC esiane sɛ ɛyɛ den na ɛnyɛ den sɛ wɔde bedi dwuma nti.
l Kar : Nneɛma abien no nyinaa a wɔde afrafra, a egyina ɔfã a wɔreyɛ no so.
Sɛ́ wubenya pairing no yiye no yɛ ade titiriw:
l Hwɛ sɛ ɛne ne ho hyia : Bere nyinaa hwɛ hu sɛ bolt no thread type ne nut no de hyia. UNF bolt hia UNF nut.
l Hwɛ Screw Thread Chart : Saa chart yi boa ma threads a ɛne ne ho hyia pɛpɛɛpɛ, kyerɛ pitch ne thread density.
l Susuw Nneɛma a Wɔde Yɛ Ho : Ɛsɛ sɛ nneɛma a wɔde yɛ bolt ne nut no hyia ma nkitahodi a emu yɛ den.
Momma yɛnka sɛ woreboaboa ɛlɛtrɔnik mfiri bi ano. Ɛda adi sɛ wobɛpaw UNF nhama esiane ne nne a ɛyɛ fɛ ne sɛnea ɛyɛ pɛpɛɛpɛ nti . Ɔkwan foforo so no, sɛ woreyɛ nhomakorabea a, anka UNC nhama bɛfata kɛse ama wɔn ahoɔden ne sɛnea ɛyɛ mmerɛw sɛ wobedi ho dwuma.
UNC ne UNF nhama a wobɛpaw no ba fam sɛ wobɛte wo dwumadie no ahwehwɛdeɛ pɔtee ase, nnwuma gyinapɛn, ne hwɛ sɛ nneɛma a ɛka ho nyinaa hyia. Sɛ́ ɛyɛ nnwinnade a ɛyɛ pɛpɛɛpɛ a ɛyɛ mmerɛw anaasɛ adansi nneɛma a ɛyɛ den no, asaawa a ɛfata no hwɛ hu sɛ a egyina pintinn , ahoɔden , na wo nhyiam no nyinaa di yiye.
Berɛ a yɛrewie no, momma yɛnkae dwumadie titire a UNF ne UNC nhama di wɔ nnwuma ahodoɔ mu. Saa nhama yi, ɛmfa ho sɛnea ɛbɛyɛ te sɛ nea ɛyɛ nketewa no, yɛ ade titiriw a ɛbɛma wɔahwɛ ahu sɛ nneɛma a wɔde di dwuma a wontumi nkan no yɛ nea ahobammɔ wom, ɛyɛ pɛpɛɛpɛ, na ɛyɛ adwuma.
l UNF Threads : Wɔn nne a ɛyɛ fɛ no ma wɔyɛ nea eye ma nneɛma a ɛyɛ pɛpɛɛpɛ a ɛkorɔn ne ahoɔden a ɛhwehwɛ te sɛ nea ɛwɔ ahunmu , mfiri a ɛyɛ pɛpɛɛpɛ mu , ne kar a wɔyɛ.
l UNC Threads : Wonim no sɛ ɛyɛ coarse threads, saa threads yi ho hia wɔ adansi, mfiri a emu yɛ duru, ne da biara da nneɛma mu esiane sɛ ɛnyɛ den sɛ wɔde bedi dwuma na ɛyɛ den nti.
Thread a ɛfata – UNF anaa UNC – a wobɛpaw no ba fam kɔ:
l Dwumadie no nteaseɛ : Wo dwumadie no ahiadeɛ pɔtee, sɛ ɛyɛ pɛpɛɛpɛ a ɛkorɔn anaasɛ ɛyɛ den no, bɛkyerɛ wo paw no kwan.
l Nnwumayɛbea Gyinapɛn : Sɛ wuhu nnwumayɛbea nhyiam ahorow a, ɛboa ma wopaw nea ɛfata.
l Nhyiamu : Sɛ wobɛhwɛ sɛ nhama, nhama, ne nnua a wopaw no hyia a, ɛho hia paa na ama woatumi ayɛ nhyiamu.
Ebia nhama no sua, nanso nkɛntɛnso a enya no yɛ kɛse. Efi wimhyɛn a ɛrehuruw wɔ yɛn atifi so kosi ɛlɛtrɔnik mfiri a yɛde di dwuma da biara da so no, UNF ne UNC nhama kura yɛn wiase no mu. Enti bere foforo a wobɛyɛ adwuma bi no, susuw saa abran nketewa yi ho. Wo paw wɔ UNF ne UNC ntam no betumi ama nsonsonoe nyinaa aba w’abɔde ahoɔden, pɛpɛɛpɛyɛ, ne nkwa tenten mu.
Q: Nsonsonoe bɛn na ɛwɔ UNF ne UNC nhama ntam?
A: UNF nhama no yɛ fɛ sen saa; UNC nhama no yɛ nea ɛyɛ mmerɛw. UNF wɔ nhama pii wɔ inch biara mu. UNC abu so kɛse wɔ sɛnea wɔde di dwuma wɔ ɔkwan a ɛkɔ akyiri so.
Q: Bere bɛn na ɛsɛ sɛ mede UNF nhama di dwuma wɔ UNC nhama so?
A: Fa UNF di dwuma ma nhyɛso a eye ne nsakrae a ɛyɛ fɛ. Wɔpɛ UNF wɔ dwumadie a ɛhwehwɛ sɛ wɔyɛ no pɛpɛɛpɛ a ɛkorɔn mu.
Asɛmmisa: Ɔkwan bɛn so na mesusuw nhama nne ma UNF ne UNC nhama?
A: Fa afiri a wɔde susuw nhama di dwuma de kan nhama a ɛwɔ nsateakwaa biara mu. Sua kwan a ɛda nhama ntam fi ne soro kosi ne soro. Fa toto gyinapɛn ahorow a wonim ho.
Asɛmmisa: So UNF ne UNC nhama no yɛ nea wotumi sesa?
A: Dabi, ɛsono sɛnea wɔde asaawa no bɔ. Sɛ wɔsesa wɔn ho wɔn ho a, ebetumi ama nneɛma asɛe. Bere nyinaa fa asaawa su a ɛfata no hyia.
Q: Nnwinnade bɛn na mihia na mede ayɛ adwuma wɔ UNF ne UNC nhama ho?
A: Wubehia tap ne dies, thread gauge, ne wrench. Hwɛ sɛ nnwinnade no ne thread type no hyia. Ebia ɛho behia nso sɛ wɔde srade gu mu.
