Tornillos Chicago ranurados

El proceso de estampado en frío es uno de los nuevos procesos de mecanizado a presión de menor o ningún corte
metal. Es un método de transformación que utiliza la deformación plástica del metal bajo la acción de
fuerzas externas y, con ayuda de moldes, redistribuye y transfiere el volumen de metal para formar
las piezas o formatos necesarios. El proceso de estampación en frío es el más adecuado para producir piezas estándar.
elementos de fijación como pernos, tornillos, tuercas, remaches, pasadores, etc.

1. Definición fundamental

Slotted Chicago screws (commonly called pernos sexuales o binding barrels) are specialized two-piece fasteners designed for secure, flush-mounted assemblies. These mechanical fasteners consist of two interlocking components:

• Male screw: Features a slotted drive head and external machine threads

• Female barrel: Contains internal threads and an external flange for load distribution

2. Key Characteristics

• Reversible Assembly: Allows repeated disassembly without material damage

• Flush Mount Capability: Countersunk heads sit nearly flush with surfaces

• Resistencia a las vibraciones: Threaded connection resists self-loosening

• Material-Friendly: Eliminates compression damage common with rivets

4. 4. Propiedades mecánicas

• Resistencia a la tracción: 45,000-70,000 psi (carbon steel)

• Resistencia al cizallamiento: ~60% of tensile strength

• Capacidad de par: 4-25 in-lbs depending on size

• Temperatura: -20°F to +250°F (untreated steel)

5. Ventajas funcionales

• Precision Tension Control: Adjustable tightness

• Clean Aesthetics: Low-profile installation

• Versatilidad de materiales: Compatible with leather, wood, plastics, composites

• Capacidad de servicio: Facilitates maintenance access

6. Industry Applications

• Marroquinería: Holsters, belts, saddles

• Woodworking: Furniture, cabinets, displays

• Industrial: Equipment panels, signage

• Commercial: Retail displays, sample cases

8. Quality Indicators

• Threads: Smooth engagement without cross-threading

• Flange: Flat bearing surface without burrs

• Slot: Centered, properly machined for driver engagement

10. Maintenance Considerations

• Inspection: Annual check in high-vibration use

• Replacement: When threads show >30% wear

• Corrosion Prevention: Use plated/stainless versions in humid environments

12. Historical Context

First patented in the late 19th century for bookbinding applications, Slotted Chicago Screws have evolved into essential fasteners across multiple industries. Their simple yet effective design has remained largely unchanged for over 100 years, demonstrating exceptional functional longevity.