High Quality Rivets: An Essential Component for CNC Machined Parts(bronze or copper Enoch)
- source:WEINBERG CNC Machining
What Makes a Quality Rivet?
When assessing rivet quality, engineers look at several key factors:
Material Strength: Aircraft-grade aluminum, steel, stainless steel, copper, and titanium are common rivet materials. The material must be strong enough to withstand shearing and pulling forces.
Durability: High quality rivets maintain their holding strength over time, through vibration, temperature changes, and stress cycles.
Precision: Quality rivets have a close tolerance head diameter and shank length. This allows for flush driving during installation.
Grip Range: Different rivet types have specified grip ranges to properly fill hole sizes. Using the right grip range ensures a tight fit.
Manufacturing Consistency: Reputable manufacturers closely control their processes to produce consistent, high quality rivets.
Why Rivet Quality Matters in CNC Machining
In CNC machined products, rivets hold together internal parts, facades, panels, and hardware. Using rivets that fail prematurely can lead to product defects and safety issues down the road. This highlights why engineers need to source their rivets from reliable, specialized manufacturers.
High quality rivets provide optimal strength for the application while minimizing hardware complexity. Choosing the right strength also allows engineers to use smaller, lighter rivets to reduce part weight when feasible. This is particularly important in industries like aerospace where every ounce matters.
The precision of quality rivets enables accurate, flush installation. For parts involving plates or facades, uniform rivet height provides a smoother surface finish. In electronics and internal assemblies, seamless installation prevents protruding edges that could damage wires or components.
Furthermore, quality rivets rated for high cycle life can withstand ongoing stress and vibration within assemblies. They have the durability to outlive consumer use without failing prematurely.
Recommend Rivet Materials for CNC Machined Parts
Stainless steel and aluminum are two of the most common rivet materials used in CNC machined products.
Stainless Steel Rivets
- Best corrosion resistance
- High strength at high temperatures
- Often used in harsh environments
- Provides good shear and tensile strength
- Available in various stainless grades (303, 304, 316, 410)
- Good corrosion resistance
- Easy to drive flush into soft aluminum parts
- Alloy 2117 ideal for high strength
- Alloy 5056 more economical, medium strength
Other Durable Options:
- Monel (nickel-copper alloy) - retards corrosion and galling
- Titanium - lightweight and very strong at high temperatures
- Brass - attractive finish, good corrosion resistance
Rivet styles like large flange rivets and drive rivets also improve installation while providing solid retention. Discuss your CNC machined part design with your rivet supplier to select the optimal rivet type and material.
Automating Rivet Installation for CNC Machined Parts
Modern CNC machining centers can automate rivet placement and driving to improve efficiency. Here are some ways that CNC automation enhances rivet integration:
- Precision automated rivet feeding prevents jams and minimizes downtime.
- Automated inspection checks each rivet for flaws and proper dimensions.
- Software sorts and orientates different rivet types/sizes for reliable pick-and-place.
- Automated drivers use force feedback to consistently set rivets to optimal height and torque.
- In-process inspection verifies rivet placement and setting meets specifications.
- Automated drilling, countersinking, and deburring enables smooth rivet holes.
For low to medium production runs, self-clinching rivet nuts allow for tool-less fastening. The rivet nut threads into a drilled hole and locks into place when squeezed with an installation tool. The threaded nut provides reusable fastening points.
Quality rivets installed via CNC automation create durable end-use parts efficiently. However, engineers still need to assess part design, material performance, and riveting technique. Partnering with an experienced rivet manufacturer ensures you select optimal rivets for automated production.
In summary, utilizing high quality rivets is a best practice for CNC machined parts and assemblies. Paying close attention to material properties, precision, and manufacturing consistency allows you to source durable rivets purpose-built to withstand your product’s service environment. CNC Milling