Riveting in Sheet Metal Using CNC Technology(what is a tack welder Deborah)
- source:MAJA CNC Machining
Benefits of CNC Riveting
CNC riveting provides numerous advantages over manual riveting:
- Speed and efficiency. CNC machines can rapidly install hundreds of rivets per hour with extreme consistency. This is far faster than hand riveting.
- Precision. The computer-controlled nature of CNC allows for precise spacing and alignment of rivets, critical in many applications. Hole locations and rivet sizes are optimized by the programming.
- Strength and reliability. CNC-driven rivet setting ensures each rivet is fully and consistently set. This results in a strong, reliable joint. Weak or malformed rivets are eliminated.
- Automated process. Besides programming, CNC riveting requires little human intervention once set up and running. It can run unattended continuous production.
- Versatility. CNC machines can handle diverse rivet sizes and materials, from small aluminum rivets to large steel structural rivets. Changeover is fast.
- Reduced work injury. CNC riveting minimizes hard hammering by operators, greatly reducing repetitive stress injuries. Work quality and safety improve.
These benefits make CNC the go-to choice for most sheet metal fabrication shops today. The fast, precise, and consistent nature of CNC is ideal for processing the high rivet counts found in many sheet metal products.
CNC Riveting Process
While the CNC machine does the rivet installation work, proper set up is critical for success. Here are the main steps in the CNC riveting process:
1. Design. The rivet locations are specified in the 3D model and 2D drawings. The rivet type, size, pitch, pattern, and orientation are all designed for optimal performance and manufacturability.
2. CNC programming. Riveting instructions are programmed, including locations, depths, and automated tool paths. Advanced software simplifies this complex task.
3. Fixturing. The metal sheets or parts are aligned and clamped together in a rigid fixture. This holds the parts firmly in position for drilling and riveting.
4. Drilling. The stacked parts are CNC drill-pressed to create the rivet holes. This may be done in a separate pre-process operation.
5. Part loading. The pre-drilled part stack is loaded into the CNC riveting work cell and aligned to the fixture locators.
6. Process execution. The operator starts the programmed riveting cycle. The cell robotically inserts rivets into each pre-drilled hole and upsets them (peens the tail) using a rivet setting tool.
7. Quality confirmation. Operators do spot inspections of the first-off pieces to confirm properly set rivets and program adjustments if needed.
8. Production. The CNC system runs automatically, churning out riveted products continuously without human intervention. Operators simply keep it supplied with pre-drilled parts and rivets.
Proper tooling setup is key to achieving good quality and production rates in CNC riveting. But when done right, it is an extremely effective production process for sheet metal fabrication. Custom CNC machines can be designed to rivet anything from aircraft wings to electronics chassis production runs.
The automation, precision, speed, and flexibility of CNC makes it the ultimate process for riveting in high-volume sheet metal manufacturing. While requiring careful programming, fixturing, and setup, CNC riveting ultimately produces superior results to manual processes with reduced labor. Understanding the benefits and implementation of CNC riveting helps manufacturers improve quality and efficiency in sheet metal fabrication. CNC Milling CNC Machining