Iso 4755 | Tabella Gola Uni
La rappresenta lo standard normativo internazionale fondamentale per il disegno e la fabbricazione delle gole di scarico per filettature metriche ISO esterne . Questa norma, sviluppata dal comitato tecnico ISO/TC 2, specifica la geometria rigorosa necessaria per garantire l'accoppiamento perfetto tra viti, bulloni o tappi filettati e le relative superfici di battuta.
La norma definisce le forme e le dimensioni geometriche raccomandate per le gole di scarico d'angolo nei componenti con filettatura esterna. Viene applicata principalmente quando è richiesta una battuta a fondo piano perfetta, come nel caso di tappi idraulici, grani o viti a testa esagonale che devono serrarsi a filo della superficie.
user wants a long article about "tabella gola uni iso 4755". This refers to a UNI ISO 4755 standard that specifies dimensions for a "gola" (which I believe is a type of groove or recess for a nut). The request suggests the user needs a comprehensive article, likely for an Italian audience, covering the standard's purpose, dimensions, tolerances, material specifications, applications, and comparisons with other standards. To gather this information, I will perform multiple searches targeting different aspects of the standard. search results provide some information about the standard. There are results from Skuola.net, fasteners.it, and Cad3D.it that mention the standard. The search results also include the ISO page and some other sources that might contain the dimensional table. To fully understand the standard, we need to open these relevant pages. search results provide a good amount of information. The PDF from fasteners.it contains the dimensional table. The search results also include the ISO page and other sources that confirm the standard's scope. The forum discussions provide practical context. I will structure the article with an introduction explaining the standard, a section on the dimensional table, practical applications, comparison with related standards, and technical drawing considerations. Thread Under the Magnifying Glass: All About the UNI ISO 4755 Undercut Table tabella gola uni iso 4755
: Assicura che l'elemento filettato arrivi a battuta perfetta contro la superficie di appoggio.
Whether you’re a machinist or a mechanical designer, understanding this "tabella gola" is critical for ensuring that bolts, screws, and plugs sit flush against their mating surfaces without interference. What is UNI ISO 4755? The request suggests the user needs a comprehensive
The solves both by providing a smooth, recessed relief.
), basta sottrarre il valore indicato nella colonna al diametro nominale della vite. Esempio Pratico di Calcolo: Filettatura M12 x 1.75 or "gola di scarico" (unloading groove)
Before diving into the numbers, let's understand the function of this element. An undercut, or "gola di scarico" (unloading groove), is a narrow annular recess created at the base of a thread, just before a reference shoulder or another part of the component. Its main purpose is purely practical: to guarantee a perfect and stable fit for the threaded element. This is achieved by ensuring that the nut or the fitting can be screwed fully without interference from the thread runout—the final, incomplete part of the thread at the end of the machining process.
: It defines the methods and protocols for testing the Tabella Gola Uni to ensure compliance with the standard.
Queste tabelle consentono di risolvere il problema geometrico dell'incontro tra un filetto esterno e uno spallamento, garantendo che la battuta sia piena e che il componente possa essere realizzato correttamente.