Introduction(application of cnc machine Merry)
- source:CLAREY CNC Machining
Sheet Metal Fabrication
One of the most common uses of rivets in CNC is for fastening thin sheet metal components. Rivets create strong permanent joints without the need for welding or threaded fasteners. CNC riveting systems can install rivets quickly and accurately in consistent locations for mass production of sheet metal products. The automated nature of the process ensures repeatability and efficiency compared to manual riveting.
Rivets are commonly used to join metal enclosures, racks, panels, guards, and other sheet metal fabrications. The combination of rivets and CNC allows manufacturers to rapidly assemble sheet metal subassemblies that would be time consuming and challenging to weld. Riveting also avoids the need to drill and tap threaded holes, simplifying design and assembly. The clinching action of rivets forms a tight mechanical bond even on thin and flexible metals.
Rivet options like blind rivets can be installed from one side of a workpiece without access to the backside. CNC automated riveting makes quick work of assembly tasks like joining inner and outer sheet metal layers for enclosures and housings. For products requiring disassembly for maintenance and repair, CNC riveting enables selective permanent and removable rivet connections.
Jigs and Fixtures
CNC riveting also plays an important role in constructing jigs, fixtures, and other manufacturing tools. Rivets provide a quick and reconfigurable method for building up these custom tools from structural framing, plates, brackets, and other components. The ability to easily add and reposition riveted attachments enables flexible and modular fixturing.
Rivets are ideal for joining fixture components because they allow adjustable positioning rather than fixed bolt holes. Fixture plates can be drilled and riveted in place on structural framing to create custom workholding configurations. Rivets also allow simplified dismantling and reconfiguration as needed for new job setups. The CNC automation makes reworking and modifying jig and fixture designs very efficient compared to manual methods.
Riveting provides strength and rigidity for high load conditions when building fixtures and jigs. Structural framing and plates can be securely joined with dense patterns of rivets that would be impractical and time consuming with bolted connections. The permanent nature of rivets prevents loosening over time from vibration and impacts. Rivets also avoid threaded holes which can allow play and reduce precision. The stability and security of CNC riveted jigs and fixtures is critical for consistently producing quality parts.
In precision equipment and mechanisms, rivets allow CNC production of components that move and operate with tight tolerances. Examples include instruments, valves, actuators, joints, and other mechanical assemblies with closely fitting parts. Riveting provides stronger and more rigid connections than fastener alternatives like screws.
Rivets permit very precise locating compared to drilled and tapped holes. This allows parts to be positioned accurately and fixed permanently in place with little risk of shifting. The precision of CNC also enables selective permanent and temporary rivets for designing mechanisms that require assembly and disassembly. In products with high precision components, small variances from screw connections could lead to binding, misalignment, and wear. Rivets avoid these issues for improved performance and longevity.
The clinching and compressive forces of riveting also allow thinner and lighter materials to be used while still providing adequate strength. Rivets distribute stresses evenly over joints for smooth operation compared to concentrated stresses from screws and bolts. The tight fit and flush exterior of countersunk rivets avoids exposed fastener heads that could contribute to unwanted friction and drag. Overall, CNC riveting enables very precise mechanical constructions not easily achievable with other fastening methods.
In electronics production, CNC riveting provides assembly solutions for delicate components and densely packed designs. The clinching process applies uniform compression without twisting or shearing forces. This allows riveting of fragile electronic parts onto circuit boards and internal supports without damage. Riveting is also ideal for electronics due to its speed and automation capabilities for high volume manufacturing.
For small consumer electronics, smartphones, and other devices, rivets offer reliable fastening while minimizing space. The lack of screw heads, nuts, and washers allows compact interior construction to maximize component density. Flush mounted rivets also avoid protrusions that could snag or catch within a crowded enclosure. The automated precision of CNC systems ensures accuracy when working in tight spaces with little margin for error.
Rivets further enable disassembly and repair of electronics which may not be feasible with welded or adhesive methods. Selective permanent and removable rivets allow access to internal modules and components for maintenance and upgrades. Riveting also improves reliability compared to threaded fasteners which can vibrate loose over time in electronics applications. The combination of small size and reliable performance makes rivets well suited for electronics manufacturing.
Riveting is an essential process that CNC automation has made faster, more precise, and repeatable. Rivets continue to be a preferred fastening method for applications ranging from sheet metal fabrication to high precision mechanisms. CNC riveting improves quality and capabilities beyond manual methods for both permanent and temporary connections. With the right rivet tooling and programing, manufacturers can solve old and new fastening challenges using this simple but profoundly useful mechanical fastener. The versatility and flexibility of CNC riveting ensures it will remain a go-to joining solution across many industries. CNC Milling