Keyed connection. Ramin sadarwa - Gost. Tolerances keyways mahadi

Keyed dangane - wani irin biyu view Tashar sarrafa gasketed sassa. Yana da muhimmanci. A wannan yanayin, abubuwa da alaka da karin kashi - key.

fanni na aikace-aikace

duk kyawawan sauki a wannan batun. M keyed connection for jointing shaft da cibiya. Wato, su hana su daga co-karba a lokacin da karfin juyi watsa. Har ila yau, wadannan mahadi aka yi amfani, ko da yake ba yadu, su hana motsi na jirgin sama sassa. A abin da ya bi mu la'akari kawai da farko harka.

jinsunan

Key dangane kasu kashi da dama kungiyoyin:

1. Dangane da mataki na motsi. Wannan shi ne wani muhimmin halayyar. A wannan batun, an rarrabe su:

• The m connection. A wannan yanayin, a zamiya jagora ko spigot.
• Har yanzu fili.

2. A karo na biyu kungiyar an dauki wani karfi wanda abubuwa a tare. Akwai iri biyu:

• Siga. A wannan dangane da karfi aka generated a lokacin taron. Yana da akwai dabam daga workload.
• Unstressed. A wannan dangane da karfi ne generated kawai idan workload.

3. mahadi rabu da irin amfani da dowels. wato:

• Prismatic.
• Kashi.
• Cylindrical.
• Sandan.
• Tangential.

Bugu da ari faye hali kowane irin key dabam. Na farko, duk da haka, dole ne a ce cewa wadannan sassa aka yafi sanya daga high quality, m Karfe Medium: 45, 50, 55. Wannan shi ne gaskiya gaskiya. Domin ya kara da ƙarfi daga cikin dowels, sanduna domin su yi suna kullum hõre thermal jiyya. Yana inganta su quality.

layi daya key

Wannan bangare ne na uku irinsa. Wannan ne zuwa kashi shiryar, jinginar gidaje da kuma dabba ba a kanta. Saboda gaskiya cewa layi daya keyways wuya maye gurbin juna saboda mutum karbuwa, su ba su yi amfani da manyan-sikelin samar. Wannan shi ne su main drawback. Wani hasara a cikin wannan hali ne da ikon zuwa mirgine a kan lokacin da lalacewa.

Woodruff key

Wannan irin ba shi da irin wannan rashin kamar na farko. Saboda haka suna da sauki tambaya a samar. Amma su suna da hasara da suka wãyi yadu amfani - yana da wani babban giciye-sashe na shaft. Shi ba zai yiwu a kafa su a kan lankwasa rabo daga shaft ɗora Kwatancen.

cylindrical key

Wannan shi ne wani muhimmin nau'in. Suna amfani da yafi a iyakar da shaft. Su yi amfani da bukatar cewa a hade kayan su ne daban-daban a yawa, kuma daga bãyan wancan. Wannan ya hana fadi da yin amfani da irin wannan makullin a manyan-sikelin samar.

tangential key

Wannan bangare kunshi sassa biyu. Wannan irin prismatic sandan wanda yana da rectangular giciye-sashe. Kafa tangential key nau'i-nau'i a wani kwana na 120-180 digiri. A amfani da wadannan sassa ke cewa da kayan aiki a matsawa da kuma a nan akwai mafi kyau nau'i na daidai tsagi a kan daidai maida hankali gajiyan. A downside irin wannan key, za ka iya la'akari da shi a hadaddun na'urar. Aiwatar da wadannan sassa a cikin nauyi kayan aiki.

key sandan

Sukan nuna daukar kwayar cutar ta amfani da frictional sojojin.

Pluses na ce sassa:

- keyed connection a cikin wannan hali zai iya tsayayya da wani kananan axial load.

- Akwai aiki mai kyau a ƙarƙashin rinjayar m lodi.

- Ba lallai ba ne a yi amfani da ƙarin sassa cewa zai rike da axial yunkuri na Dandali.

Sabani na keys ne kamar haka:

- The haduwar disassembly lokacin gyara.

- Strong biya diyya daga tsakiyar cibiya dangi da shaft axis. Wannan shi ne wani gagarumin al'amari.

- A gaban short tsawon yana yiwuwa Kit gwaji skew da runout Ba a cire sashi wadda ake gyarawa (kura, kaya).

Tolerances keyways mahadi

Wannan definition ne nemaloznachimym. Don tabbatar da ingancin da wajabta tolerances keyways mahadi. Yana da muhimmanci a san. Ma'anar keyed Gost 2.308-79 "kenan tsarin zane takardun. Lura a cikin zane siffofin da tolerances da saman ". Wannan yayi dace da shirin tushe.

The lamba sigogi kafa wuri tolerances game da wadannan dangantakar: T (K.Mag) = 0.6 T (br). T (sim0) = 4.0 T (w).

Inda wadannan zane-zane da sun hada da:

- T (br) - haƙuri keyed Ramin nisa b.

- C (tururi) - ya ce siga parallelism.

- T (SIM) - fasali haƙuri darajar da diamita darajar.

A lasafta sigogi na data kusa da misali ma'anar. Shiryar da wannan to Gost 24643.

Dasa keyways mahadi

Daidaiton Kafa sassa bayar da zabi wannan wani zaɓi. Yana da muhimmanci a yi la'akari da. Tolerances ayyana iri uku mahadi ko landings. Yana ke kula da nagartacce. Next, dubi kowane irin daki-daki.

free fili

Wannan saukowa amfani a karkashin wuya yanayi da guda majalisai lodi. Amfani for mobile sadarwa bayar haske wajibi aiki.

al'ada dangane

Halin da shi a matsayin kutse Fit, ba ya bukatar m kowa,. Good ginawa yanayi daban-daban.

m mararraba

Su m yiwuwar samun kimanin m qananan interferences a cikin Game dowel jointing da biyu aka gyara (su ramummuka). A taron jama'a da aka yi amfani da karamin yawan Baya lodi.

Tabbatar da dalilin da wadannan mahadi

Kamar yadda riga aka ambata a sama, da harshe da gaske sanya daga high quality, kuma karfin steels na matsakaici (55, 50, 45). Don ƙara ƙarfi daga cikin kashi blank domin su yawanci hõre zafi magani, wanda inganta su quality.

Lokacin da yake bunkasa a keyed connection, wanda pre-jawo sama, da tsawo da nisa daga cikin kashi yin amfani da daidaitattun Gost 2336-7, shan la'akari da diamita daga cikin shaft. A wannan yanayin, babu wani abu da wuya. A tsawon na harshe dauki dangane da cibiya. Kwatanta wannan da dacewa misali dokokin. A selection na wasu key sigogi bari by ake ji lissafi muhimmanci key dangane da ƙarfi. A kirga wannan shi ne wani babban yarjejeniyar. Alal misali, da yanayin ƙarfi a wannan harka shi ne da wadannan dabara:

σsm = F1 / ACM ≤ [σsm].

A nan, F1 - siga circumferential karfi zuwa kura (H). AFM ne karfi area (mm²). Wannan darajar da aka ƙaddara da wadannan dabara: (0,94h-T1) LP.

A wannan yanayin, LP = l-a key ne aiki tsawon da taso iyakar. Wannan siga da aka auna a millimeters. l - An keyed cikakken tsawon.

Dabi'u a, h, T1 ne misali girma dabam daidai da Gost 23360 - 78.

[Σsm] - saitin da halatta ƙarfin lantarki auka a kan (N / mm²). Lokacin amfani da baƙin ƙarfe Kit [σsm] an samu a cikin wani zangon 55 ... 95 N / mm².

Aiki key tsawon aka lasafta kamar haka:

LP = 32 - 6 = 26 mm.

Tabbatar da dalilin da crushing yankin:

ACM = (0.94 · 6 - 3.5) · 26 = 55,64 mm².

The darajar F1 yarda da samu ma'aunai. A wannan yanayin, F1 = 1200 H.

A sakamakon haka, da lissafi na rated ƙarfin lantarki zai zama:

σsm = 1200 / 55,64 = 21,56 N / mm².

Wannan ya nuna cewa da yanayin karfin:

σsm = 21,56> [σsm] (55 ... 95 N / mm²).

Abũbuwan amfãni key connection

Ga aka gani da wadannan:

• Design abin dogara da kuma m.
• Su ne sauki tara da kwakkwance.
• Low cost.
• Su ne sauki tsirar.

shortcomings

A wannan girmamawa, gane da wadannan:

• Keyway raunana sashe na shaft da cibiya.
• A da yawa mahadi akwai misalignment. Wannan ne, da dangi hijirar na cibiya shaft axis da rabin diametrical yarda.
• Sasanninta keyway high ƙarfin lantarki matakin.