Introduction(how a plasma cutter works Owen)

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Rivets are a crucial fastening technology used in many CNC (computer numerical control) manufacturing applications. Though seemingly simple, rivets provide immense utility and versatility in product assembly and fabrication. Understanding the core principles of rivets and their numerous uses enables CNC machinists, technicians, engineers and designers to fully leverage rivets in manufacturing. This article will explore the fundamentals of rivet function, types of rivets available and overview key uses of rivets in CNC processes.
What are Rivets?
A rivet is a mechanical fastener used to join multiple materials by inserting a metal shaft through aligned holes in the materials and forming a head on one or both ends. The rivet holds the materials together through clamping force exerted by the deformed shaft and heads. Rivets come in a wide range of sizes, shapes and material types to accommodate many fastening scenarios. Compared to other joining methods like welding or adhesives, riveting provides solid fastening while allowing some flexibility and Shock absorption in the joint. Rivets are installed and heads are formed using riveting tools tailored to the rivet type.
Benefits of Rivets
Rivets offer unique benefits that make them indispensable for many CNC applications:
- Reliable fastening strength - Rivet joints exhibit high shear and tensile strength for solid, durable fastening. Proper rivet specification prevents fastener failure.
- Adjustment/alignment capability - The fastening holes for rivets have a clearance allowance so parts can be adjusted and aligned before riveting.
- Vibration/shock resistance - Rivet heads can flex slightly to dampen vibration and shock forces.
- Quick installation - Automated riveting tools allow rapid mass rivet installation. Hand tools also facilitate fast manual riveting.
-removability - Most rivets can be drilled out to remove or disassemble riveted parts when needed.
- Material versatility - Rivets come in aluminum, steel, stainless steel, copper, titanium and other alloys to mate with base materials.
Types of Rivets
Common rivet types include:
- Blind rivets - Tubular rivets installed where access is only available to one side of a part. Mandrel stems are pulled to flare the rivet.
- Solid rivets - Cylindrical or tubular rivets where heads are formed on both sides of a joint. Very strong rivet type.
- Self-piercing rivets - Tubular rivets that pierce through sheet materials and flare out to form the fastening head. Ideal for aluminum, steel and other sheet applications.
- Structural rivets - Large heavy rivets used in high load structural connections. Require pneumatic tools for installation.
- Drive rivets - Small, tough tubular rivets installed using direct hammer impact rather than squeezing.
- Semi-tubular rivets - Partial tubular shape combines solid rivet strength with some tubular rivet flexibility.
- Specialty rivets - Unique shapes like large flange heads for blind areas or micro rivets for electronics. Materials like Monel resist corrosion.
Key Uses of Rivets in CNC
Rivets serve critical roles in numerous CNC processes:
- Sheet metal fabrication - Joining aluminum, steel and composite sheets to form enclosures, ducts, panels and structures. Blind and self-piercing rivets are ideal.
- Machinery assembly - Riveting moving parts, gears, linkages and components to form kinematic systems and machinery. Drive rivets work well.
- Outdoor equipment - Riveting the aluminum frames and structural parts of bicycles, trailers, railings and ladders. Self-piercing and blind rivets suit outdoor conditions.
- Automotive bodies - Mass riveting of exterior auto body panels and interior support structures. Robotic auto riveting maximizes speed.
- Avionics and aerospace - Riveting lightweight aircraft and spacecraft skins and sub-structures. Aerospace standards demandultra reliable rivets.
- Maritime vessels - Joining aluminum and steel panels into hull, deck and bulkhead structures able to withstand ocean forces.
- Rail and transit - Riveting railway car bodies, crane structures, utility frames. Vibration resistance is key.
- Furniture and displays - Riveted legs, braces, frames and joints for strength, knockdownassembly and visual appeal.
- Industrial equipment - Riveting ladders, platforms, safety rails, chutes and structures. Stainless steelresists corrosion.
Conclusion
From the smallest electronics to enormous aircraft, CNC-produced products profoundly rely on the strength, flexibility and quick installation of rivets for optimal fabrication and function. Mastering available rivet types and applications allows CNC programmers, operators and designers to take full advantage of this foundational fastening technology across every manufacturing sector. With sound riveting knowledge, shops gain a robust, versatile and reliable fastening technique that will improve product quality, durability and longevity across innumerable applications. CNC Milling CNC Machining