High Quality Rivets for CNC Machined Parts(resin injection molding Tony)
- source:YESCOM CNC Machining
What are Rivets?
A rivet is a mechanical fastener that consists of two main parts - a cylindrical shaft and a head. The shaft is inserted into a hole through the materials being fastened. The rivet head is then flattened using a riveting hammer or compression tool, creating a permanent joint. Rivets allow materials to be joined without welding or bolts.
Rivets come in a wide variety of styles, sizes, and materials. Some common types include blind rivets, drive rivets, and structural rivets. They are used in many industries from aerospace and automotive to construction and manufacturing. Quality rivets are crucial for strength, durability, and professional looking finished products.
Characteristics of High Quality Rivets
When selecting rivets for CNC machining, there are several key factors that determine quality:
High quality rivets are made from strong, durable materials that can withstand shearing and tension stresses. Aircraft grade aluminum is a popular choice as it offers good corrosion resistance while still being lightweight. Stainless steel and titanium are also used for high strength applications. The material must be compatible with the parts being joined.
Quality rivets have an accurately formed head that sits flush with the surface of the joined materials. The shaft hole should be smooth and consistent in diameter. Any irregularities could compromise the strength of the joint. High quality rivets are precisely CNC machined for optimal dimensional accuracy.
Reputable rivet manufacturers hold tight production tolerances on specifications like head diameter, shaft diameter, length, and grip range. Rivets from the same batch should be consistently identical. Variations in dimensions can prevent a tight fit and reduce strength.
The best rivets maintain their clamping ability over years of vibration, shock, and temperature changes experienced in real-world conditions. Quality rivets retain their original clamping force and do not loosen over time. They are resistant to corrosion and fatigue.
Top quality rivets are designed for effortless installation in CNC machined parts. Features like chamfered corners, precision heads, and smooth finishes allow rapid insertion and clinching during high volume production. Quality rivets should not jam equipment during automated riveting.
Testing and Certification
Reputable rivet suppliers thoroughly test their products to validate strength, durability, and performance. This includes material testing, salt spray testing, vibration and shear testing, and quality control batch testing. Look for rivets that meet industry standards like AN, NAS, and MS.
Choosing the Best Rivets for CNC Applications
With an understanding of the characteristics that make a high quality rivet, buyers can select the optimal product by considering the specific CNC machining application. Here are some tips:
- For aerospace parts, lightweight and extremely strong aircraft grade aluminum or titanium rivets are ideal. Suppliers like Cherry Aerospace offer rivets that meet NAS, AN, and MS standards.
- Heavy machinery and automotive applications require hardened steel rivets that can handle high shear and tensile loads. Drive rivets from suppliers like Arnold offer good strength-to-weight ratio.
- Small electronics parts are best joined with miniature stainless steel or semi-tubular rivets which have small diameters but maintain strength. PEM and PennEngineering offer micro rivets ideal for precision CNC machined components.
- Two-piece blind rivets allow clinching where only one side is accessible. Look for break mandrel options where the shaft snaps off after installation for faster processing.
- For quick identification choose colored or painted rivet heads. Anodized aluminum colors like red, blue, and gold are popular. This allows easy visual inspection of proper rivet clinching.
- Select rivet lengths to accommodate the thickness of the materials being joined, ensuring adequate grip range for a tight fit. Make sure shaft diameter aligns with CNC machine riveting tooling.
Proper rivet selection, certified suppliers, thorough quality control, and testing will ensure your CNC machined parts have dependable, long-lasting riveted joints. Investing in high quality rivets leads to improved strength, durability, aesthetics, and production efficiency. CNC Milling CNC Machining