Porca do cano

O processo de encabeçamento a frio é um dos novos processos para a maquinagem sob pressão com menos ou nenhum corte
metal. É um método de processamento que utiliza a deformação plástica do metal sob a ação de
forças externas e, com a ajuda de moldes, redistribui e transfere o volume de metal para formar
as peças ou os espaços em branco necessários. O processo de encabeçamento a frio é o mais adequado para a produção de
elementos de fixação, tais como cavilhas, parafusos, porcas, rebites, cavilhas, etc.

A barril noz (também conhecido como cross dowel, spine nut, or correio de ligação) is a fastening component designed to provide strong and secure joints in various applications, including furniture, aerospace, automotive, and mechanical assemblies. It consists of a short, cylindrical metal body with an internally threaded hole, allowing it to receive a bolt or screw.

1. Design and Features

• Shape: Cylindrical or slightly elongated, sometimes with flanges or slots for improved grip.
• Internal Threading: The hole inside the barrel nut is threaded to accommodate a bolt or machine screw.
• Material: Typically made from steel, stainless steel, brass, aluminum, or titanium, depending on the strength and corrosion resistance required.
• Size Variations: Comes in different diameters, thread sizes, and lengths to fit specific applications.
• Orientation: The internal threading is usually perpendicular to the length of the barrel, but some designs allow parallel alignment.

2. Types of Barrel Nuts

(A) Based on Shape and Structure:

1. Standard Barrel Nut: A simple cylindrical body with internal threading, used in furniture and general fastenings.
2. Cross Dowel (Perpendicular Barrel Nut): The bolt passes perpendicular to the nut, commonly found in furniture joints.
3. Flanged Barrel Nut: Has an extended flange at one end for better load distribution and stability.
4. Slotted Barrel Nut: Includes a slot or screwdriver groove for easy tightening and alignment.
5. Binding Post (Chicago Screws): Consists of a male and female part, often used in bookbinding and leather products.