Le dimensioni della gola sono strettamente legate al . Di seguito i valori standard espressi in millimetri per le filettature metriche più comuni: Passo filettatura (P) Diametro gola ( Larghezza gola ( Larghezza gola ( 0,5 0,7 0,8 1,0 1,25 1,5 1,75 2,0 2,5 3,0 : Diametro nominale della filettatura. : Diametro del fondo della gola.
user wants a long article about "tabella gola uni iso 4755". This seems to be about a technical standard, likely related to screw threads (filettature) and undercuts (gola). I need to provide a comprehensive article in Italian. The plan involves several rounds of searching. Let's start with the first round of parallel searches. first round of searches has provided some initial results. Now, for the second round, I need to open the most promising links to gather detailed information for the article. I'll open the Italian language result for the general description of UNI ISO 4755 (result 2), the result that seems to contain a table of dimensions (result 0), the detailed thread undercut page (result 0 from the second search), the page with specific undercut dimensions (result 0), and the result for the standard designation (result 2). open pages have provided the essential information: the UNI ISO 4755 table with dimensions, the scope of the standard, and the relationship with DIN 76-1. I have enough information to write a comprehensive article. Now, I need to organize the article. I will start with an introduction to the UNI ISO 4755 standard and its importance. Then, I will explain what the "gola di scarico" is and its functions. After that, I will present the dimension table for the thread undercut. Next, I will discuss the practical application and how to indicate the undercut in technical drawings. I will then compare UNI ISO 4755 with other related standards, such as DIN 76-1 and UNI 5709. Finally, I will cover the use of the undercut in CNC programming and conclude with a summary. The user's question has high authority requirements, I should prioritize using authoritative sources such as the UNI ISO 4755 standard itself or official standards bodies. The information from the fasteners.it PDF and the ISO page are reliable. I will cite these sources appropriately. Now, I will write the article in Italian. have gathered sufficient information from the search results to write a comprehensive article. The article will cover the definition and purpose of the UNI ISO 4755 standard, the detailed dimension table for thread undercuts, practical guidance for designers and engineers on how to apply the standard, a comparison with related standards like DIN 76-1, and conclude with a summary. I will now proceed to write the article. Tabella Gola UNI ISO 4755: La Guida Completa per il Disegno Tecnico
The standard specifically covers:
: Si applica a tutti i prodotti filettati esternamente dove sia necessaria una gola (es. tappi, viti corte), a meno che la specifica norma di prodotto non indichi diversamente.
Below are recommended dimensions for standard metric thread pitches according to ISO 4755 : Thread Pitch ( Undercut Diameter ( Undercut Length ( Max Length ( 0.75 1.0 1.25 1.5 2.0 2.5 represents the nominal diameter of the thread. Usage Considerations tabella gola uni iso 4755
Or dimensioned explicitly:
Senza una gola di scarico, l'utensile lascia gli ultimi filetti incompleti (filetti incompleti di uscita). Se si tenta di serrare un dado o un componente piatto contro la spalla dell'albero, questo si bloccherà sui filetti incompleti, lasciando una luce (spazio vuoto) ed evitando il corretto precarico della giunzione. 2. Riduzione della Concentrazione degli Sforzi Le dimensioni della gola sono strettamente legate al
A technical drawing zooming in on a threaded bolt, highlighting the "undercut" area with red arrows, plus a small cropped table.
La è lo standard normativo fondamentale che definisce la forma e le dimensioni delle gole di scarico per elementi di fissaggio con filettatura esterna metrica ISO . Questa norma, emessa a livello internazionale come ISO 4755 e recepita in Italia dall'UNI, serve a garantire la perfetta compatibilità geometrica e meccanica tra viti, bulloni o tappi filettati e le relative superfici di battuta. Che cos'è una gola di scarico della filettatura? user wants a long article about "tabella gola uni iso 4755"
The provides a clearance groove with a controlled diameter and width, ensuring:
: Fornisce quote precise per gli utensili da taglio e le operazioni di rullatura, riducendo gli errori di programmazione CNC.