Tugtar an pháirc freisin ar luaidhe an scriú liathróid, is é sin, fad gluaiseacht líneach an scriú pitch in aghaidh an réabhlóide. Is iad na raonta luaidhe coitianta ná 1, 2, 4, 6, 8, 10, 16, 20, 25, 32, 40. Go ginearálta níl ach 5 agus 10 ag táirgí spot luaidhe beaga agus meánmhéide, agus is iad na táirgí luaidhe mór ná 1616, 2020, 2525, 3232, 4040 (is iad an chéad dá dhigit an trastomhas, agus is iad an dá dhigit dheireanacha an luaidhe). Féach ar an táirgeadh monaiméir le haghaidh sonraíochtaí oighear gorm. Baineann ceannaireacht le luas líneach. Nuair a bhíonn an luas ionchuir tairiseach, is mó an luaidhe, is amhlaidh is tapúla an luas. Moladh lannaithe: Déan iarracht 5 agus 10 dtreoir a roghnú.
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.
Is é pitch an fad idir dhá shnáithe in aice láimhe. Tá baint ag páirc agus luaidhe, ach ní coincheapa coibhéiseacha iad. Cuireann go leor daoine mearbhall ar pháirceáil agus ar luaidhe. Tagraíonn coincheap an luaidhe don achar a ghluaiseann an cnó ar an scriú tar éis rothlú amháin den scriú nó an cnó. Más -scriú liathróid ceann amháin é, is ionann an pháirc agus an luaidhe. I gcás scriú liathróid il-ceann,=pháirc luaidhe iolraithe faoi líon na gcinn scriúnna. Má bhogann an scriú ceithre (nó cúig) scriúnna in aghaidh an imrothlaithe, ciallaíonn sé gur scriú ceithre shnáithe (nó cúig shreang) é an scriú, ar a dtugtar de ghnáth ceann ceithre (nó cúig -scriú).
Cén fáth nach dtugann tú dúshlán líneach dúinn?
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