High Quality Rivets are Essential for CNC Machining(cnc machined parts Suzanne)

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Rivets are a crucial component in manufacturing and construction that are often overlooked. However, using high quality rivets can make a big difference in the strength, durability, and precision of assembled products. This is especially true for computer numerical control (CNC) machining, where precision and reliability are paramount. In this article, we’ll look at why quality rivets matter for CNC applications and discuss what characteristics to look for when sourcing rivets.
The Role of Rivets in CNC Machining
CNC machining uses programmed computer software to control machine tools. This technology is commonly used for high precision parts manufacturing across industries like aerospace, automotive, and medical devices.
Rivets play an integral role in CNC machining. They are used to join and assemble machined parts and sub-assemblies together. The riveting process happens towards the end of production, after parts have been individually machined using milling, turning, grinding and other techniques.
Proper rivet installation is crucial for maintaining tight tolerances and structural integrity of CNC machined components. Any defects or weaknesses in the rivets can lead to part failure, misalignment, or loose assemblies. That’s why using high quality rivets designed for the demands of CNC machining is so important.
Key Properties of Quality CNC Rivets
So what makes a rivet well-suited for CNC machining? Here are some of the top properties and features to look for:
Consistent Dimensions: Rivets must be precision manufactured to tight dimensional tolerances. Even minor variations in rivet length, diameter, head shape, etc. can prevent proper assembly and cause issues like cracking.
High Shear Strength: CNC parts undergo dynamic loads and stresses. Rivets need sufficient shear strength to handle these forces without failing or pulling apart.
Ductility: Ductile rivets with some malleability allow for installation and pin spreading without cracking or fracturing. Brittle rivets are prone to failure.
Corrosion Resistance: CNC components are often exposed to water, chemicals, or outdoor elements. Stainless steel and aluminum rivets hold up better than steel in these conditions.
Fatigue Resistance: Fluctuating stresses over time can fatigue and weaken rivets. Using rivets rated for high cycle fatigue life enhances durability.
Temperature Resistance: Whether exposed to high heat in manufacturing or low cold during transport, rivets need to perform across temperature extremes.
CNC Compatibility: Rivets should be designed specifically to handle the forces, vibration, and automation of computer controlled machines.
By selecting rivets with these robust physical properties and material strengths, manufacturers can avoid common defects like cracking, loosening, or falling out entirely. This produces better CNC machined end-products.
Proper Rivet Selection for Materials and Joints
In addition to looking at general rivet quality, manufacturers also need to choose the right rivet type and specs based on the application:
Material to be Joined: Steel rivets won’t work for aluminum parts, and vice versa. Match the rivet metal to the parts.
Joint Design: Different joint configurations suit certain rivet styles and diameters. Understand optimal riveting for lap joints, butt joints, tee joints, joints with multiple sheets, etc.
Grip Range: Choose a rivet with the right grip range for the total thickness of the materials it must penetrate and clinch.
Access for Installation Tools: Consider whether riveting will be done by hand or require access for pneumatic/hydraulic tools based on location.
Head Style: Some joints may need flush rivets to maintain smooth exterior surfaces, while bulb or countersunk heads work in other spots.
By taking these factors into account, the right rivets can be specified for each unique machined part assembly situation.
Automated Riveting in CNC Machining
One of the major benefits of using CNC machining is the ability to automate repetitive manufacturing processes, like riveting. Today’s computer controlled machines can integrate riveting tools and software to handle the entire riveting process.
Here are some advantages of automated riveting for CNC assemblies:
Speed and Efficiency: Automated riveting with CNC is faster than manual methods. Riveting operations can happen simultaneously across large assemblies.
Consistency and Precision: CNC programmed riveting applies uniform pressure and positioning for reliable, defect-free connections.
Operator Health: Automation eliminates the repetitive stress injuries associated with manual riveting.
Flexibility: CNC programs can accommodate multiple rivet patterns, locations, and sequences tailored to each part.
Despite these benefits, automated CNC riveting still relies on quality rivets designed for the demands of automated installation. CNC compatible rivets ensure consistent fastening results from the automated process.
Procuring Quality Rivets for CNC Machining
Given the performance needs for rivets used in CNC applications, simply buying the cheapest loose rivets is unwise. Here are some recommendations for purchasing quality CNC rivets:
Work with Established Manufacturers: Reputable rivet companies like Cherry Aerospace and L.A. Fasteners have extensive experience with rivets for CNC machining across Industries. They can recommend and supply the best rivet solutions.
Ask for Material Certs and Testing Data: Rigorously vet rivet quality by reviewing third party material test certification and lab data that verifies shear strength, ductility, corrosion resistance and other properties.
Buy from Authorized Distributors: Buying through authorized CNC rivet distributors like GlobalFastenerSupply.com provides access to verified inventory from leading brands.
Do On-Site Inspection of Rivets: When possible, directly inspect rivet packages and do sample riveting tests yourself to check for any defects before doing a full production run.
By starting with high quality rivets sourced smartly, CNC manufacturers can achieve precision assemblies, optimal performance, and maximum production uptime. Don’t let inferior rivets undermine your machining results. Investing in quality pays dividends across CNC riveted designs. CNC Milling