Can I contact factories directly on CNFX?

CNFX is an open directory. Each factory profile provides direct contact information.

Punch Component – Machinery and Equipment Manufacturing

Component Specifications

Definition

A punch is a hardened, precision-machined component in a forming die set that serves as the male counterpart to a die. It applies controlled force to sheet metal or other materials to perform operations such as blanking, piercing, forming, or drawing. The punch typically moves vertically within a press to engage with the stationary die, creating the desired shape or hole through mechanical deformation or shearing action.

Working Principle

The punch operates on the principle of applying concentrated mechanical force to deform or shear material. When mounted in a press, it descends into the die cavity, forcing the workpiece material to flow, fracture, or conform to the die shape. The clearance between punch and die edges determines whether the operation is shearing (cutting) or forming (shaping without cutting).

Materials

Tool steel (D2, A2, M2), carbide (tungsten carbide), high-speed steel (HSS), or powder metallurgy steels. Hardness typically 58-65 HRC for steel punches, 85-92 HRA for carbide.

Technical Parameters

Tolerance ±0.01 mm to ±0.05 mm
Shank Type Straight, shouldered, or ball-lock
Length Range 25-300 mm
Diameter Range 0.5-200 mm
Point Geometry Flat, conical, bullet-nose, or shaped
Surface Finish Ra 0.4-0.8 μm

Standards

ISO 8020, DIN 9861, JIS B 5012

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Punch.

Parent Products

This component is used in the following industrial products

Forming Die Set

A precision tool assembly used in metal forming processes to shape sheet metal into specific geometries through pressing operations.

View Product Details

Precision Tooling (Die & Punch)

Specialized tooling components used for cutting, forming, or shaping materials in precision pressing operations

View Product Details

Engineering Analysis

Risks & Mitigation

Tool breakage causing production downtime
Material springback affecting dimensional accuracy
Punch wear leading to burr formation
Misalignment causing shearing instead of forming
Fatigue failure from cyclic loading

FMEA Triads

Trigger: Excessive clearance between punch and die
Failure: Burr formation, poor edge quality, increased wear
Mitigation: Maintain proper clearance (typically 5-10% of material thickness), regular dimensional inspection

Trigger: Material hardness variation
Failure: Punch chipping or premature wear
Mitigation: Verify material specifications, use appropriate punch material (carbide for harder materials)

Trigger: Improper lubrication
Failure: Gallling, material adhesion, increased friction
Mitigation: Apply appropriate lubricant for material type, ensure consistent application

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

ISO 2768-mK for general dimensions, ISO 8015 for geometrical tolerancing

Test Method

Dimensional verification with CMM, hardness testing per ISO 6508, surface roughness measurement per ISO 4287

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.

Related Components

pH Sensor Assembly

Precision pH sensor assembly for automated monitoring and dosing systems in industrial applications

Load Cell Assembly

Precision load cell assembly for automated powder dispensing systems

Dust Collection Port

A dust collection port is a critical component in automated powder dispensing systems that captures airborne particulates at the source to maintain clean air quality and prevent cross-contamination.

Sensor Element

Core sensing component in industrial smart sensor modules that converts physical parameters into electrical signals for process monitoring and control.

Frequently Asked Questions

What is the difference between a blanking punch and a piercing punch?

A blanking punch cuts the entire perimeter of a part from sheet metal, producing the desired component. A piercing punch creates holes within a part without cutting the outer perimeter. The clearance and edge preparation differ between these applications.

How often should punches be inspected and maintained?

Punches should be visually inspected every shift for wear or damage. Dimensional checks should be performed weekly or every 10,000 cycles. Regular maintenance includes cleaning, lubrication, and edge condition verification to prevent premature failure.

What causes punch breakage in forming operations?

Common causes include excessive clearance between punch and die, misalignment, material hardness variations, inadequate lubrication, fatigue from cyclic loading, and improper punch material selection for the application.

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.

Punch