nkhani

Kodi kulekerera kwa magawo, miyeso yoyambira, ndi miyeso yocheperako ndi chiyani kwenikweni?

 

In chogwiriraKusankha ndi kukhazikitsa, nthawi zambiri timakumana ndi mawu aukadaulo akuti "dimensional tolerances," "basic dimensions," ndi "limit dimensions." Amamveka ngati "injiniya" kwambiri, koma kumvetsetsa mfundo izi ndikofunikira kwambiri pakukonza kulondola kwa msonkhano ndikukulitsachogwiriramoyo.

 

1. Kodi gawo loyambira ndi chiyani?

 

Muyeso woyambira ndi muyeso wa chiphunzitso cha gawo monga momwe zalembedwera pazithunzi za kapangidwe; ungamvekenso ngati muyeso pansi pa "mikhalidwe yabwino." Mwachitsanzo, ngati m'mimba mwake wamkati mwa chogwirira chalembedwa ngati 50mm, 50mm iyi ndiye muyeso wake woyambira.

 

Ndi poyambira pa kapangidwe;

 

Komabe, pamakina enieni, zimakhala zovuta kupeza kulondola 100%;

 

Chifukwa chake, "kulekerera" ndi "miyeso yocheperako" zilipo.

 

2. Kodi kulolerana kwa magawo ndi chiyani?

 

Tonsefe tikudziwa kuti makina opangidwa ndi makina sangakwaniritse "kulondola kotheratu." Ngakhale zida zolondola kwambiri zimakhala ndi cholakwika china chake. Mtundu wovomerezeka wa cholakwika ichi ndi kulekerera kwa magawo.

 

Kulekerera kwa miyeso = Mtengo wopatuka pamwamba - Mtengo wopatuka wotsika. Imafotokoza kuchuluka kovomerezeka kwa kusinthasintha kwa miyeso ya gawolo.

 

Mwachitsanzo: Kukula koyambira kwa dzenje ndi 50mm, ndipo kutalika kwake kovomerezeka ndi +0.02 / -0.01mm, ndiye kuti kulekerera kwake ndi 0.03mm.

 

Kulekerera sikuperekedwa mwachisawawa; kumachokera pa miyezo ya dziko (monga ISO, GB, ndi zina zotero). Magiredi osiyanasiyana a kulekerera akuyimira zofunikira zosiyana za kulondola.

 

3. Kodi malire a malire ndi chiyani?

 

Miyeso ya malire ndi malire apamwamba ndi otsika a kukula komwe kumawerengedwa kutengera "kukula koyambira" ndi "kulekerera kwa magawo."

 

Kupitiliza ndi chitsanzo pamwambapa:

Kukula koyambira: 50mm

Kulekerera: +0.02/-0.01mm

Ndiye miyeso yake yocheperako ndi iyi:

Mulingo wokwanira = 50 + 0.02 = 50.02mm

Mulingo wocheperako = 50 - 0.01 = 49.99mm

Mwa kuyankhula kwina, bola ngati kukula kwenikweni kuli pakati pa 49.99mm ndi 50.02mm, gawolo limaonedwa kuti ndi loyenerera/lovomerezeka.

 

Nchifukwa chiyani miyeso iyi ndi yofunika kwambiri pa ma bearing?

 

Maberiya, monga zigawo zolondola kwambiri, ali ndi zofunikira kwambiri pakukula kwa malo oikira. Kupatuka kwakukulu kwa malo kungayambitse mavuto awa: Kutseguka kwambiri: Kumakhudza kulondola kwa ntchito ndipo kumayambitsa kugwedezeka; Kulimba kwambiri: Kumawonjezera kukangana, zomwe zimapangitsa kuti kutentha kwambiri kapena kugwire; Kuwonongeka mwachangu: Kumachepetsa moyo wa maberiya; Kuyika kovuta: Kumakhudza kugwira ntchito bwino komanso mtengo wake.

 

Kudziwa bwino izi sikungokuthandizani kusankha ma bearing oyenera komanso kupewa mavuto odziwika bwino, zomwe zimatsimikizira kuti makina amagwira ntchito bwino komanso modalirika!