Inonzwisisika induction uye ruzivo rwakatorwa rwe thread standards

Zvakawanda sei zvaunoziva nezve tambo dzemuchina?

Munzvimbo yekugadzira, "tambo" dzinowanzo nongedzera kune helical mipata uye mipata iri pamusoro pechikamu checylindrical, iyo inogonesa kuti ibatane nechimwe chikamu kana kushandiswa kufambisa kufamba kana simba. Tsananguro uye mwero weshinda dzakagadzirwa kazhinji dzakananga kuindasitiri uye mashandisirwo ari mubvunzo.MuUnited States, shinda dzemuchina dzinowanzo kutsanangurwa nezviyero zvinotarwa nemasangano akadai seAmerican National Standards Institute (ANSI) neAmerican Society of Mechanical Engineers. (ASME). Aya mazinga anotsanangura tambo profiles, pitch, makirasi ekushivirira, uye mamwe ma parameter emhando dzakasiyana dzeshinda.

Imwe yezviyero zvinonyanya kuzivikanwa zveshinda dzakagadzirwa ndeye Unified Thread Standard (UTS), iyo inoshandiswa kune inch-based threads. Iyo UTS inotsanangudza tambo dzakatevedzana, dzakaita seUnified Coarse (UNC) uye Yakabatana Fine (UNF), uye inopa yakadzama zvirevo zvehukuru hweshinda, kushivirira, uye mazita.Kune metric threads, ISO metric screw thread standard (ISO 68-1) inoshandiswa zvakanyanya. Iyi chiyero inovhara metric tambo profiles, shinda inonamira, makirasi ekushivirira, uye zvimwe zvinoenderana.Zvakakosha kutarisa kune chaiwo mwero uye zvakatemwa zvinoenderana neindasitiri uye mashandisiro auri kushanda nawo kuvimbisa dhizaini chaiyo uye kugadzirwa kweshinda dzakagadzirwa.

Mazuva ese, matekinoroji anoshanda nemichina anosangana nezvinhu zvakarukwa. Zvisineyi nezvavanoda — ingave metric kana yehumambo, yakatwasuka kana yakadhindwa, yakavharwa kana isina kuvharwa, yemukati kana yekunze, ine 55-degree kana 60-degree profile — izvi zvikamu zvinowanzokuvadzwa uye zvinoitwa zvisingagoneke nekufamba kwenguva. Zvakakosha kunyatsoongorora kubva pakutanga kusvika pakupedzisira. Nhasi, timu yeAnebon ichanyora pfupiso ine tariro yekuti ichabatsira munhu wese.

1. Zviratidzo zvakajairika

NPTishizha rinoshandiswa neAmerican standard tapered pombi shinda ine 60° profile angle.

PTshinda ishinda yehumambo ine shinda ine 55 ° angle yeshinda, inowanzoshandiswa kuisa chisimbiso. Shinda dzepombi dzeBritain dzine shinda dzakanaka. Nekuda kwekudzika kweshinda huru yeshinda dzakakasharara, inoderedza zvakanyanya kusimba kwepombi yekunze kwedhayamita iri kuchekwa.

PFshinda ishinda inofambirana yemapombi.

Gishinda ine 55-degree isina-shinda yepombi yekuisa chisimbiso, ndeyemhuri yekwaWhitworth. Mucherechedzo G unomiririra shinda ine cylindrical, G ichiva izwi rinowanzoreva shinda yepombi (Guan), uye mutsauko uri pakati pe55 degrees ne60 madhigirii unoshanda.

ZGinowanzozivikanwa sepombi cone, zvinoreva kuti shinda inogadziriswa kubva kune conical surface. General majoini epombi yemvura anogadzirwa nenzira iyi. Chiyero chenyika chekare chakanzi Rc.Pitch chinoshandiswa kutaridza shinda dzemetric, ukuwo nhamba yeshinda painch ichishandiswa kuAmerica neBritish threads. Uyu ndiwo musiyano wavo wekutanga. Tambo dzemetric dzine 60-degree equilateral profile, shinda dzeBritish dzine 55-degree isosceles profile, uye shinda dzekuAmerica dzine 60-degree profile.

Metric threadsshandisa metric mauniti, nepo tambo dzeAmerica neBritish dzinoshandisa mauto eumambo.

Pipe threadsanonyanya kushandiswa pakubatanidza mapaipi. Iyo yemukati nekunze tambo yakanyatsoenderana, uye kune marudzi maviri: yakatwasuka mapaipi uye tapered pombi. Iyo dhayamita yezita inoreva dhayamita yepombi yakabatana. Zviri pachena kuti dhayamita huru yeshinda yakakura kudarika dhayamita yezita.

Chiyero chekushandisa chinovharacnc machined zvikamu, cnc kushandura zvikamu uyecnc milling zvikamu.

1/4, 1/2, uye 1/8 inomiririra madhayamita ezita emainch thread mumainch.

2. Mitemo yenyika yakasiyana

1. Yakabatana inch system thread

Mhando yeshinda iyi inowanzo shandiswa munyika dzinoshandisa inch system uye yakakamurwa kuita matatu akateedzana: coarse thread series UNC, fine thread series UNF, yakawedzera tambo dzakatsetseka UNFF, uye fixed pitch series UN.
Kumaka nzira:Thread dhayamita-nhamba yeshinda pa inch series code- giredhi rechokwadi.

Semuyenzaniso:3/8—16UNC—2A; Fine thread series 3/8—24UNF—2A; Yakawedzera tambo yakatsetseka yakatevedzana 3/8—32UNFF—2A;

Fixed pitch series 3/8—20UN—2A. Dijiti rekutanga 3/8 rinoratidza dhayamita rekunze reshinda mumainch. Kushandura kune metric unit mm, wedzera ne 25.4, iyo yakaenzana ne9.525mm; nhamba yechipiri neyechitatu 16, 24, 32, uye 20 inomiririra nhamba yemazino pa inch (nhamba yemazino pakureba kwe25.4mm); macode ezvinyorwa mushure medhijiti yechitatu, UNC, UNF, UNFF, UN, ndiwo makodhi akatevedzana, uye manhamba maviri ekupedzisira, 2A, anoratidza danho rechokwadi.

Shanduko ye 2.55° cylindrical pombi thread
Iyo 55 ° cylindrical pombi shinda yakatanga kubva painch series asi inoshandiswa zvakanyanya munyika dzese metric uye inch. Inoshandiswa kubatanidza majoini epombi, kutakura zvinwiwa nemagasi, nekuisa waya. Nekudaro, nyika dzakasiyana dzine makodhi akasiyana, saka zvakafanira kushandura makodhi ekunze kuita makodhi eChinese uchishandisa tafura (tafura yekuenzanisa) yakapihwa. Iyo 55 ° cylindrical pombi tambo macode emarudzi akasiyana anoratidzwa mutafura iri pazasi.

Shanduko ye3.55° tapered pombi thread
55° tapered pombi shinda inoreva kuti shinda profile angle i55° uye shinda ine taper ye1:16. Iyi nhevedzano yeshinda inoshandiswa zvakanyanya munyika, uye mazita ekodhi ayo anosiyana nyika nenyika.

4.Kushandura kwe60 ° tapered pipe thread

60° tapered pombi shinda inoreva shinda yepombi ine profile angle ye60° netambo taper ye1:16. Iyi nhevedzano yeshinda inoshandiswa muindasitiri yezvishandiso zvemuchina wenyika yangu uye United States neyaimbova Soviet Union. Iro zita rekodhi, China yaiwanzoitsanangura seK, yakazoitsanangura seZ, uye ikozvino yashandurwa kuita NPT. Ona tafura yekuenzanisa kodhi pazasi.

5.55° Trapezoidal Thread Conversion
Tambo yeTrapezoidal inoreva shinda ye metric trapezoidal ine profile angle ye30°. Iyi nhevedzano yeshinda dzakafanana kumba nekune dzimwe nyika, uye macode avo zvakare anowirirana. Makodhi eshinda anoratidzwa mutafura iri pazasi.

3. Thread classification

Maererano nekushandiswa kwakasiyana kwetambo, dzinogona kukamurwa kuita:

1. International Metric Thread System

Iyo tambo yakatorwa nenyika yangu yenyika chiyero CNS. Kumusoro kwezino kwakati sandarara uye kuri nyore kutendeuka, nepo pasi pezino pakaita arc-shaped kuti iwedzere kusimba kweshinda. Iyo tambo angle ndeye 60 madhigirii, uye tsanangudzo inoratidzwa muM. Metric threads inogona kugoverwa mumhando mbiri: coarse thread uye fine thread. Iyo inomiririra seM8x1.25. (M: kodhi, 8: dhayamita yezita, 1.25: pitch).

2. American Standard Thread

Pamusoro nemudzi weshinda zvese zvakati sandara uye zvine simba riri nani. Iyo kona yeshinda zvakare 60 madhigirii, uye zvirevo zvinoratidzwa mushinda pa inch. Rudzi urwu rweshinda runogona kukamurwa kuita nhanho nhatu: coarse thread (NC); shinda yakanaka (NF); yakawedzera tambo yakanaka (NEF). Iyo inomiririra yakaita se 1/2-10NC. (1/2: dhayamita rekunze; 10: nhamba yemeno pa inch; NC code).

3. Yakabatana standard thread (UnifiedThread)

Yakabatanidzwa neUnited States, United Kingdom, neCanada, ndiyo inowanzoshandiswa shinda yeBritish.
Iyo kona yeshinda zvakare 60 madhigirii, uye zvirevo zvinoratidzwa mushinda pa inch. Rudzi urwu rweshinda runogona kukamurwa kuita shinda yakaoma (UNC); shinda yakanaka (UNF); yakawedzera tambo yakanaka (UNEF). Iyo inomiririra yakaita se 1/2-10UNC. (1/2: dhayamita rekunze; 10: nhamba yemeno pa inch; UNC code).

4.V-yakaita shinda (Sharp VThread)

Pamusoro nemidzi zvese zvakanongedza, zvisina simba musimba, uye hazviwanzo kushandiswa. The thread angle i60 degrees.

5. Whitworth Thread

Mhando yeshinda iyi inotsanangurwa neBritish National Standard. Iyo ine tambo angle ye55 degrees uye inofananidzirwa ne "W". Yakanyanya kugadzirirwa kutenderedza maitiro ekugadzira, inowanzomirirwa seW1/2-10 (1/2: dhayamita rekunze; 10: nhamba yemeno pa inch; W code).

6. Round Thread (KnuckleThread)
Iyi mhando yeshinda yakajairwa, yakagadzwa neGerman DIN, yakanyatsokodzera kubatanidza magirobhu emwenje nemachubhu erabha. Iyo inoratidzwa nechiratidzo "Rd".

7. Pipe Thread (PipeThread)
Yakagadzirirwa kudzivirira kubuda, tambo idzi dzinowanzo shandiswa kubatanidza gasi kana pombi dzemvura. Iine tambo angle ye55 degrees, inogona kukamurwazve kuita tambo dzepombi dzakatwasuka, dzinozivikanwa se "PS, NPS", uye tapered tambo dzepombi, dzinozivikanwa se "NPT". Iyo taper ndeye 1:16, yakaenzana ne3/4 inch netsoka.

8. Square Thread
Inoratidzira hunyanzvi hwekutapurirana, yechipiri chete kune tambo yebhora, mhando yeshinda iyi inowanzo shandiswa kune vise screws uye crane shinda. Zvisinei, muganhu waro uri mukusakwanisa kugadziriswa ne nut mushure mekupfeka.

9. Trapezoidal Thread
Iyo inonziwo Acme thread, rudzi urwu runopa zvishoma kuderera kwekutapurirana kubudirira pane tambo yechikwere. Nekudaro, ine mukana wekugadziriswa ne nut mushure mekupfeka. Mune metric system, kona yeshinda i30 madhigirii, nepo muhumambo system, i29 madhigirii. Inowanzo shandiswa kune inotungamira screws ye lathes, inomiririrwa nechiratidzo "Tr".

10.Zigzag thread (ButtressThread)

Iyo inonziwo rhombic thread, inokodzera nzira imwe chete yekufambisa. Senge screw jacks, pressurizers, etc. Chiratidzo ndeche "Bu".

11. Bhora shinda

Ndiyo tambo ine yakanakisa kutapurirana zvakanaka. Zvakaoma kugadzira uye zvinodhura zvakanyanya. Inoshandiswa mumichina chaiyo. Zvakadai seye lead screw ye CNC muchina maturusi uyeprototype machined zvikamu.

Kumiririrwa kwema inch bolts
LH 2N 5/8 × 3 – 13UNC-2A
(1) LH ishinda yakasara (RH ishinda yekurudyi uye inogona kusiiwa).
(2) 2N shinda mbiri.
(3) 5/8 inch thread, kunze dhayamita 5/8”.
(4) 3 bhaudhi kureba 3”.
(5) shinda gumi nenhatu dzine shinda gumi nenhatu painch.
(6) UNC yakabatana yakajairika shinda yakaoma.
(7) Level 2 fit, shinda yekunze (3: tight fit; 2: medium fit; 1: loose fit) A: shinda yekunze (inogona kusiiwa), B: shinda yemukati.

Imperial thread
Hukuru hweshinda dzehumambo hunowanzo ratidzwa nehuwandu hweshinda painji imwe yehurefu pashinda, inodaidzwa se "nhamba yeshinda pa inch", iyo yakanyatso kuenzana nekudzokorora kweshinda. Semuenzaniso, shinda ine shinda 8 pa inch ine pitch ye 1/8 inch.

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