Cov hlau lead ntawm lub pob ntsia hlau tseem hu ua lub suab, uas yog, qhov kev ncua deb ntawm txoj kab txav ntawm lub suab ntsia hlau ib lub kiv puag ncig. Cov khoom siv lead ua feem ntau yog 1, 2, 4, 6, 8, 10, 16, 20, 25, 32, 40. Cov khoom siv lead ua me thiab nruab nrab feem ntau tsuas muaj 5 thiab 10, thiab cov khoom siv lead ua loj yog 1616, 2020, 2525, 3232, 4040 (thawj ob tug lej yog txoj kab uas hla, thiab ob lub xeem yog cov hlau lead). Saib cov monomer ntau lawm rau xiav dej khov specifications. Kev coj ua muaj feem cuam tshuam nrog kev nrawm nrawm. Thaum cov input ceev tsis tu ncua, qhov loj dua cov hlau lead, qhov ceev ceev. Lanbing tswv yim: Sim xaiv 5 thiab 10 coj.
The selected lead is related to the required movement speed and system, usually from 4, 5, 6, 8, 10, 12, 20. The size is larger, the lead can also be larger (mainly consider the bearing tooth thickness). When meeting the speed requirements, generally choose a smaller lead (conducive to improving the control accuracy); for high-speed occasions, the lead can be greater than 20; for the ground screw, the lead can be approximately equal to the nominal diameter (under grinding The limit of the helix angle), such as 32 (3232), 40 (4040), of course, it can be larger (non-grinding, but rarely considered). Under the same conditions, the larger the lead, the larger the rotating part, the larger the period error, and the faster the speed. Therefore, flexibility is required at high speeds, and abandoning part of the accuracy requirements will make the gap requirements less significant (increased lead accuracy deviation). Therefore, the large screw is generally a single nut.
Pitch yog qhov kev ncua deb ntawm ob lub xov uas nyob ib sab. Pitch thiab txhuas muaj feem cuam tshuam, tab sis tsis sib npaug cov ntsiab lus. Muaj coob tus neeg confuse lub suab thiab lead. Lub tswv yim ntawm txhuas yog hais txog qhov kev ncua deb uas cov txiv ntseej txav ntawm cov ntsia hlau tom qab ib qho kev sib hloov ntawm cov ntsia hlau los yog txiv ntseej. Yog tias nws yog ib qho - taub hau pob ntsia hlau, lub suab thiab cov hlau lead yog tib yam. Nyob rau hauv cov ntaub ntawv ntawm ib tug multi- lub taub hau pob ntsia hlau, cov hlau lead=suab sib npaug los ntawm tus naj npawb ntawm cov ntsia hlau taub hau. Yog tias cov ntsia hlau txav plaub (lossis tsib) ntsia hlau rau ib lub kiv puag ncig, nws txhais tau hais tias cov ntsia hlau yog plaub- xov (los yog tsib-xov) ntsia hlau, feem ntau hu ua plaub- taub hau (los yog tsib- taub hau) ntsia hlau.
Vim li cas ho tsis muab peb txoj kev sib tw linear?
Sib cuagt Tam sim no
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