INDUSTRY COMPONENT

Lower Die Block

Lower die block is the stationary base component in a V-die set that supports and aligns the die during sheet metal bending operations.

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Component Specifications

Definition
The lower die block is a precision-machined component in a V-die set that serves as the foundation for bending operations. It provides a stable, rigid platform that supports the die insert and maintains alignment with the upper punch during the bending cycle. Typically mounted to the press bed, it features precisely machined surfaces, mounting holes, and alignment features to ensure accurate part formation and repeatability in industrial metal fabrication processes.
Working Principle
The lower die block operates on the principle of providing a fixed, rigid reaction surface against which sheet metal is formed. When the upper punch descends, it forces the workpiece into the V-opening of the die insert mounted on the lower block, creating plastic deformation along a predetermined bend line. The block's mass and rigidity absorb bending forces while maintaining dimensional stability and alignment throughout the production cycle.
Materials
Typically manufactured from high-strength alloy steel (AISI 4140, 4340) or tool steel (D2, A2) with hardness ranging from 40-55 HRC. May include surface treatments like nitriding or chrome plating for wear resistance.
Technical Parameters
  • Height 80-200 mm
  • Standard Width 100-300 mm
  • Surface Finish Ra 0.8-1.6 μm
  • Standard Length 500-3000 mm
  • V-opening Sizes 6-50 mm
  • Flatness Tolerance ±0.05 mm/m
  • Mounting Hole Pattern Standard T-slots or threaded holes
Standards
ISO 9001, DIN 55201, ISO 12165

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Lower Die Block.

lower die block V-die set sheet metal bending press brake tooling metal forming die component industrial tooling Lower Die Block in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

V-Die Set

A specialized tooling assembly used in press brakes to create precise V-shaped bends in metal sheets.

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Engineering Analysis

Risks & Mitigation
  • Wear and deformation from repeated loading
  • Misalignment causing part defects
  • Fatigue cracking in high-cycle applications
  • Surface damage from abrasive materials
FMEA Triads
Trigger: Excessive loading beyond design capacity
Failure: Plastic deformation or cracking of the block
Mitigation: Implement load monitoring systems and adhere to manufacturer's tonnage limits
Trigger: Improper alignment during installation
Failure: Uneven wear and poor part quality
Mitigation: Use precision alignment tools and follow installation procedures

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.1 mm for critical dimensions, ±0.05 mm for alignment features
Test Method
Coordinate measuring machine (CMM) verification, surface plate inspection, hardness testing per ASTM E18

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the difference between a lower die block and a die insert?

The lower die block is the main structural component that mounts to the press bed, while the die insert is the removable component that fits into the block and provides the specific V-opening geometry for bending.

How often should lower die blocks be inspected for wear?

Regular visual inspections should occur daily, with detailed dimensional checks every 500 operating hours or as specified by the manufacturer based on material thickness and production volume.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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