The Importance of Quality Rivets in CNC Machining(4 axis cnc Claude)
- source:MAJA CNC Machining
What Makes a Good Rivet?
When looking at rivets, there are a few key factors that determine quality:
Material - Aircraft grade aluminum is the most common. Stainless steel, copper, and Monel are also used for specialized applications. The material must be strong, corrosion resistant, and suitable for the expected stresses.
Diameter Tolerance - The shank diameter must be uniform and match the hole size precisely. Even minor deviations can cause looseness or make the rivet hard to install.
Head Shape - Countersunk and round head rivets are typical. The head should be well-formed and concentric with the shank.
Grip Length - This indicates the thickness of material the rivet can clamp. Using one with proper grip length for the application ensures tight fastening.
Shank Condition - Dents, scratches and other defects compromise strength. Quality rivets have flawless shanks.
Why Rivets Matter in CNC Machining
Rivets installed using CNC machines hold together everything from aircraft fuselages to PC cases. The reasons they are ubiquitous include:
Efficiency - Riveting offers very fast assembly compared to screws or welding. CNC automated installation makes the process even faster.
Strength - Properly driven rivets create tight, permanent joints. The compression force of the setting process deforms the rivet for a secure hold.
Reliability - Unlike screws, rivets cannot loosen over time from vibration. This makes them ideal for critical structures.
Appearance - Countersunk rivets result in a flat surface with only the head visible. This gives a clean, streamlined look.
Flexibility - Riveting works with virtually any metal and many plastics. Minimal edge distance is required, allowing rivets even close to edges.
Light Weight - Rivets add very little weight versus other fasteners. This is a major advantage in aircraft and other applications where weight matters.
With so many benefits, it’s easy to see why CNC-installed rivets are vital in manufacturing. But those advantages only hold true if the rivets themselves are well-made.
How to Source Quality Rivets
Finding a supplier of top-grade rivets tailored to your application takes some research. Here are the key considerations for CNC shops:
Industry Expertise - Seek out rivet manufacturers that specialize in your field, such as aerospace, electronics or automotive. They’ll understand the exact requirements.
Material Options - Make sure the supplier offers the materials you need for function and corrosion resistance. This includes aluminum, steel, titanium, and specialty alloys.
Size Range - The supplier should carry the full range of shank diameters you require, including small sizes like 0.093” for precision applications.
Head Styles - Availability of all the necessary head shapes is important. This includes countersunk, round, flat, drive, large flange, and brazier heads.
Service - Reliable lead times, responsive customer service, knowledgeable staff, and quality certifications indicate a supplier who will meet your needs.
Testing - Reputable manufacturers test thoroughly for defects and meet specifications. Ask about their quality control process.
Once you’ve evaluated suppliers based on those criteria, request samples to experience the quality firsthand. Testing production samples will confirm fit, finish, and performance before placing a full order.
Installing durable, reliable rivets requires starting with rivets manufactured to equally high standards. With CNC machining, the precision and repeatability enable fast joining times, but only if the rivets meet specifications. Finding and qualifying the ideal rivet supplier may take some upfront effort - but it’s an investment that will pay dividends with smooth production and confidence in the finished product. For mission-critical components, take the time to source quality rivets. CNC Milling CNC Machining