{"id":1418,"date":"2021-03-24T14:16:22","date_gmt":"2021-03-24T06:16:22","guid":{"rendered":"https:\/\/www.symachining.com\/?p=1418"},"modified":"2021-03-24T14:16:22","modified_gmt":"2021-03-24T06:16:22","slug":"selecting-correct-tolerance-for-your-machined-components","status":"publish","type":"post","link":"https:\/\/www.symachining.com\/it\/selecting-correct-tolerance-for-your-machined-components\/","title":{"rendered":"Selezione della tolleranza corretta per i componenti lavorati"},"content":{"rendered":"

Prestare attenzione alla tolleranza dei componenti personalizzati del macchinario<\/h3>\n

Per quanto riguarda la tolleranza di componenti lavorati<\/a>In genere si determina prima la tolleranza dimensionale e poi quella di forma e posizione. Quando progettiamo i componenti lavorati, per ottenere una tolleranza ragionevole. Dobbiamo considerare innanzitutto le esigenze funzionali. La seconda \u00e8 la tecnologia di lavorazione, l'ultima \u00e8 la tecnologia di assemblaggio e manutenzione.<\/p>\n\n\n\n

Ad esempio, il foro di montaggio e l'albero non sono solo rotondi, possono essere anche quadrati, ma di solito si usano rotondi, perch\u00e9 la lavorazione \u00e8 pi\u00f9 conveniente. I metodi di lavorazione tradizionali, come la tornitura, la fresatura, la foratura e la rettifica, sono per lo pi\u00f9 di tipo circolare. Ora, con la popolarit\u00e0 del taglio laser e del taglio a filo, anche l'applicazione di fori di forma speciale \u00e8 aumentata. A parit\u00e0 di livello di tolleranza, il costo di lavorazione del foro quadrato \u00e8 superiore a quello del foro rotondo.<\/p>\n\n\n\n

\n
\"\"<\/a>\n
Componenti lavorati<\/figcaption>\n<\/figure>\n<\/div>\n\n\n\n

Poich\u00e9 il metodo tradizionale di lavorazione \u00e8 quello circolare, la scelta del foro e dell'albero prevede un sistema di fori e un sistema di alberi di base. In generale, \u00e8 possibile ottenere un foro mediante foratura, alesatura e fresatura. Per una lavorazione conveniente, dovremmo scegliere di avere strumenti prontamente disponibili (trapano, alesatore, fresa), come il diametro di 14 mm dell'utensile da taglio sono molto rari, possiamo scegliere 12 mm, 15 mm o 16 mm di diametro degli utensili da taglio, che \u00e8 una specifica di acquisto convenzionale. In questo modo, il costo di produzione \u00e8 molto basso. Ad esempio, scegliere il diametro di 30 mm e non di 27 mm, anche se l'elaborazione ha bisogno di 27 mm.<\/p>\n\n\n\n

L'accoppiamento del foro e dell'albero comprende l'accoppiamento di gioco, l'accoppiamento di transizione e l'accoppiamento di interferenza.<\/p>\n\n\n\n

1) Se il funzionamento intermittente unidirezionale e lo spostamento della rotazione richiedono una bassa precisione e una bassa velocit\u00e0 con una chiave piatta. \u00c8 possibile scegliere l'accoppiamento a distanza, ma \u00e8 necessario che le due viti siano posizionate a 90 gradi.<\/p>\n\n\n\n

2) Se si tratta di una rotazione intermittente unidirezionale, o di un movimento in avanti e inverso, \u00e8 necessario scegliere l'accoppiamento di transizione, ma anche una vite di fermo.<\/p>\n\n\n\n

3) Se si tratta di trasferire una coppia elevata, si sceglie l'accoppiamento per interferenza, che di solito richiede il montaggio a pressione o a caldo.<\/p>\n\n\n\n

La tolleranza di forma e posizione \u00e8 il complemento della tolleranza dimensionale, pertanto la selezione della zona di tolleranza deve essere inferiore alla tolleranza dimensionale.<\/p>\n\n\n\n

\n
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Componenti lavorati in metallo<\/figcaption>\n<\/figure>\n<\/div>\n\n\n\n

Per i componenti lavorati, la larghezza della tolleranza \u00e8 di 0,2 mm. Se si richiede il parallelismo della superficie di entrambi i lati, \u00e8 necessario meno di 0,2 mm. Nella maggior parte dei casi, l'ampiezza della richiesta di tolleranza non \u00e8 elevata, ma il requisito di parallelismo \u00e8 alto. In alcuni casi \u00e8 di 0,05 mm. Il parallelismo \u00e8 quindi molto importante e di solito influisce sull'assemblaggio.<\/p>","protected":false},"excerpt":{"rendered":"

Per quanto riguarda la tolleranza dei componenti lavorati, in genere si determina prima la tolleranza dimensionale e poi la tolleranza di forma e posizione. Quando progettiamo i componenti lavorati, per ottenere una tolleranza ragionevole. Dobbiamo considerare innanzitutto le esigenze funzionali. La seconda \u00e8 la tecnologia di lavorazione, la [...]<\/p>","protected":false},"author":2,"featured_media":1419,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[14],"tags":[],"class_list":["post-1418","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-machining-industry"],"acf":[],"yoast_head":"\nSelecting correct tolerance for your machined components - SYM Precision Machining Manufacturer China<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.symachining.com\/it\/selecting-correct-tolerance-for-your-machined-components\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Selecting correct tolerance for your machined components - SYM Precision Machining Manufacturer China\" \/>\n<meta property=\"og:description\" content=\"Pay attention on the tolerance of custom machiend components Concerning the tolerance of machined components, generally, the dimensional tolerance is determined first, and then the shape and position tolerance is determined. 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