バレルナット

冷間圧造加工は、切削の少ない、あるいは切削を必要としない新しい圧造加工のひとつである。
の作用による金属の塑性変形を利用する加工法である。
外力を受け、金型の助けを借りて、金属の体積を再分配し、移動させる。
必要な部品やブランクを製造します。冷間圧造工程は、標準的な
ボルト、ネジ、ナット、リベット、ピンなどの留め具。

A バレル 木の実 (として知られている。 cross dowel, spine nut, or バインドポスト) 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.
• 素材： 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.