INDUSTRY COMPONENT

Backgauge Fingers

Backgauge fingers are precision components in sheet metal bending machines that position and support material against the backgauge for accurate bending operations.

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Component Specifications

Definition
Backgauge fingers are mechanical components mounted on the backgauge system of press brakes and sheet metal bending machines. They serve as adjustable stops that contact the sheet metal workpiece to establish precise positioning relative to the bending tool. These fingers move along the backgauge beam to accommodate different material sizes and bending positions, ensuring repeatable accuracy in metal forming operations. They typically feature hardened contact surfaces and may include measurement scales or digital readouts for positioning verification.
Working Principle
Backgauge fingers operate by moving along the backgauge beam to predetermined positions based on programmed bending parameters. When the sheet metal is loaded, it contacts the fingers' surfaces, establishing a fixed reference point. During bending operations, the fingers maintain consistent positioning through mechanical locking mechanisms or servo-controlled systems, ensuring the material remains properly aligned with the bending tool throughout the forming process.
Materials
Typically manufactured from hardened tool steel (A2, D2, or similar grades) or carbide-tipped for wear resistance. Some applications use aluminum alloy bodies with steel inserts. Surface treatments may include nitriding, chrome plating, or titanium nitride coating for enhanced durability.
Technical Parameters
  • Width 20-80 mm
  • Thickness 10-40 mm
  • Height Range 50-200 mm
  • Load Capacity 50-500 kg
  • Mounting Type T-slot, dovetail, or bolt-on
  • Surface Hardness 58-62 HRC
  • Positioning Accuracy ±0.01-0.05 mm
Standards
ISO 9001, DIN 8586

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Backgauge Fingers.

backgauge fingers press brake components sheet metal positioning bending machine parts metal fabrication tools industrial equipment components Backgauge Fingers in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Backgauge System

A positioning system on a CNC press brake that controls the distance between the bending line and the material edge.

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Engineering Analysis

Risks & Mitigation
  • Wear and tear reducing positioning accuracy
  • Improper installation causing misalignment
  • Material buildup on contact surfaces affecting precision
  • Mechanical failure during high-cycle operations
FMEA Triads
Trigger: Abrasive wear from repeated material contact
Failure: Reduced positioning accuracy leading to bent part rejection
Mitigation: Implement regular inspection schedules, use hardened or coated surfaces, and establish preventive replacement intervals
Trigger: Loose mounting hardware
Failure: Finger movement during operation causing inconsistent bends
Mitigation: Use proper torque specifications during installation, implement regular fastener checks, and consider thread-locking compounds
Trigger: Contamination on contact surfaces
Failure: Inaccurate material positioning and surface damage
Mitigation: Establish cleaning protocols, use protective covers when not in operation, and implement material handling procedures to minimize debris

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Positioning tolerance typically ±0.02 mm, surface flatness within 0.01 mm per 100 mm
Test Method
Coordinate measuring machine (CMM) verification, laser alignment systems, precision gauge block comparison

Buyer Feedback

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Frequently Asked Questions

What is the purpose of backgauge fingers in metal bending?

Backgauge fingers provide precise material positioning against the backgauge system, ensuring accurate and repeatable bends in sheet metal fabrication.

How do I maintain backgauge fingers for optimal performance?

Regularly clean contact surfaces, check for wear or damage, lubricate moving parts according to manufacturer specifications, and verify positioning accuracy with calibration tools.

Can backgauge fingers be customized for specific applications?

Yes, manufacturers often offer custom finger designs with specialized shapes, materials, or mounting configurations to accommodate unique workpiece geometries or production requirements.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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Back Ferrule (if dual ferrule design) Backing Layer