izindaba

Kuyini ngempela ukubekezelelana kobukhulu, ubukhulu obuyisisekelo, kanye nobukhulu bomkhawulo?

 

In ibhereUma sikhetha futhi sifaka, sivame ukuhlangana namagama obuchwepheshe athi "dimensional tolerances," "basic size," kanye "limit sizes." Azwakala "njengobunjiniyela" kakhulu, kodwa ukuqonda le mibono kubalulekile ekuthuthukiseni ukunemba kokuhlanganiswa kanye nokwelula.ibhereimpilo.

 

1. Iyini isici esiyisisekelo?

 

Ubukhulu obuyisisekelo buyisilinganiso sethiyori sengxenye njengoba kumakwe emidwebweni yomklamo; bungaqondwa futhi njengobukhulu ngaphansi "kwezimo ezifanele." Isibonelo, uma ububanzi bangaphakathi bebhereyi buphawulwe njengo-50mm, lobu bukhulu obungu-50mm buyisilinganiso salo esiyisisekelo.

 

Kuyindawo yokuqala yokuklama;

 

Kodwa-ke, ekusetshenzisweni kwemishini kwangempela, kunzima ukufeza ukunemba okungu-100%;

 

Ngakho-ke, kukhona "ukubekezelelana" kanye "nobukhulu bomkhawulo".

 

2. Kuyini ukubekezelelana okunezilinganiso ezahlukene?

 

Sonke siyazi ukuthi imishini ayikwazi ukufeza "ukunemba okuphelele." Ngisho nemishini enembe kakhulu izoba nezinga elithile lephutha. Ububanzi obuvumelekile baleli phutha ukubekezelelana kobukhulu.

 

Ukubekezelelana kobukhulu = Inani lokuphambuka okuphezulu - Inani lokuphambuka eliphansi. Lichaza ububanzi obuphezulu obuvumelekile bokuguquguquka kobukhulu bengxenye.

 

Isibonelo: Usayizi oyisisekelo womgodi ungama-50mm, kanti ububanzi bawo obuvunyelwe bungu-+0.02 / -0.01mm, bese ukubekezelelana kwawo ngobukhulu kungu-0.03mm.

 

Ukubekezelelana akunikezwa ngokungahleliwe; kusekelwe ezindinganisweni zikazwelonke (njenge-ISO, i-GB, njll.). Amazinga ahlukene okubekezelelana amelela izidingo ezahlukene zokunemba.

 

3. Ziyini izilinganiso zomkhawulo?

 

Ubukhulu bomkhawulo buyimingcele ephezulu nephansi yosayizi ebalwe ngokusekelwe "kusayizi oyisisekelo" kanye "nokubekezelelana kobukhulu."

 

Ukuqhubeka nesibonelo esingenhla:

Usayizi oyisisekelo: 50mm

Ukubekezelelana: +0.02/-0.01mm

Khona-ke ubukhulu bayo obulinganiselwe buyi:

Ubukhulu bomkhawulo obukhulu = 50 + 0.02 = 50.02mm

Ubukhulu bomkhawulo obuncane = 50 - 0.01 = 49.99mm

Ngamanye amazwi, uma nje usayizi wangempela uphakathi kuka-49.99mm no-50.02mm, ingxenye iyabhekwa (iyafaneleka/iyamukeleka).

 

Kungani lezi zilinganiso zibalulekile kuma-bearings?

 

Ama-bearings, njengezingxenye ezinembile kakhulu, anezidingo eziphezulu kakhulu zobukhulu bokufakwa. Ukuphambuka okukhulu kobukhulu kungaholela ezinkingeni ezilandelayo: Ukususwa ngokweqile: Kuthinta ukunemba kokusebenza futhi kubangele ukudlidliza; Ukulingana okuqinile kakhulu: Kwandisa ukungqubuzana, okuholela ekushiseni ngokweqile noma ngisho nasekubambeni; Ukuguguleka okusheshayo: Kunciphisa impilo yokuthwala; Ukufakwa okunzima: Kuthinta ukusebenza kahle kokuhlanganiswa kanye nezindleko.

 

Ukwazi lolu lwazi ngeke nje kukusize ukhethe ama-bearings afanele kodwa futhi kuzogwema izingibe ezivamile zokuhlanganisa, kuqinisekiswe ukusebenza komshini okubushelelezi nokwethembekile!