V-Die Set for Press Brakes | Industrial Metal Bending Tooling

Product Specifications

Technical details and manufacturing context for V-Die Set

Definition

A V-Die Set is a critical component of an Industrial Metal Bending Press (press brake) consisting of a matched upper punch and lower die, both featuring a V-shaped profile. It is mounted onto the press to apply force and form metal sheets into specific angles, primarily 90-degree bends, through a process of plastic deformation. The set's geometry determines the bend angle, inside radius, and minimum flange length of the finished part. The V-Die Set operates on the principle of three-point bending. The metal sheet is placed over the V-opening of the lower die. The upper punch (mounted on the press ram) descends and applies concentrated force at two points on the sheet, pressing it into the die's V-opening. The bottom of the V acts as the third point, causing the material to yield and bend plastically around the die's radius. The depth of the punch penetration controls the final bend angle. Typical parameters include die width (V-opening) ranging from 6 to 100 mm, die height from 40 to 120 mm, bending angle from 30 to 90 degrees, angle tolerance of ±0.5 degrees, surface hardness of 58-62 HRC, material grade 42CrMo (per GB/T 3077), maximum operating temperature of 200°C, and weight from 5 to 50 kg. Materials commonly used include tool steel (e.g., D2, A2), alloy steel, and carbide for wear inserts. Selection of die width is based on material thickness, typically 6-10 times the sheet thickness. Die height affects press brake tooling compatibility and stroke. Higher precision is achievable with ground surfaces. Induction hardening provides wear resistance. Exceeding the maximum operating temperature may reduce hardness and service life. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The V-Die Set operates on the principle of three-point bending. The metal sheet is placed over the V-opening of the lower die. The upper punch (mounted on the press ram) descends and applies concentrated force at two points on the sheet, pressing it into the die's V-opening. The bottom of the V acts as the third point, causing the material to yield and bend plastically around the die's radius. The depth of the punch penetration controls the final bend angle.

Common Materials

Tool Steel (e.g., D2, A2), Alloy Steel, Carbide (for wear inserts)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Die Width (V-opening)	6–100 mm	Select based on material thickness; typical rule: 6–10 times sheet thickness.
Die Height	40–120 mm	Affects press brake tooling compatibility and stroke.
Bending Angle	30–90 °	Standard 90° for most applications; custom angles available.
Tolerance (Angle)	±0.5 °	Higher precision achievable with ground surfaces.
Surface Hardness	58–62 HRC	Induction hardened for wear resistance.
Material Grade	42CrMo	High-strength alloy steel; alternatives: C45, 40Cr.GB/T 3077
Max Operating Temperature	200 °C	Exceeding may reduce hardness and service life.
Weight	5–50 kg	Depends on size and configuration.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Lower Die Block Part
The stationary base component with a precision-machined V-shaped opening. It supports the material and provides the form around which the bend is made.

Material: Tool Steel
Upper Punch Part
The moving component attached to the press ram. Its V-shaped tip contacts the workpiece and forces it into the lower die to create the bend.

Material: Tool Steel
Clamping Features Part
Grooves, slots, or holes (e.g., American, European style) that allow the die set to be securely mounted and aligned on the press brake.

Material: Steel

Manufacturers of V-Die Set

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Frequently Asked Questions

What is a V-Die Set used for?

A V-Die Set is used in press brakes to bend metal sheets into precise V-shaped angles, typically 90 degrees, through plastic deformation.

How do I select the correct die width?

Die width (V-opening) is typically selected as 6-10 times the sheet thickness. For example, for 2 mm thick steel, a die width of 12-20 mm is common. Always verify with the manufacturer for your specific application.

What materials are V-Die Sets made of?

Common materials include tool steel (e.g., D2, A2), alloy steel, and carbide for wear inserts. The material grade listed is 42CrMo per GB/T 3077, but confirm with the supplier.

What is the maximum operating temperature?

The maximum operating temperature is 200°C. Exceeding this may reduce hardness and service life. Ensure cooling or avoid high-temperature applications.

Data Basis

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Preliminary Technical Classification

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pressure:	Up to 1000 tons (8.9 MN) depending on die material and construction
other spec:	Sheet thickness range: 0.5-25 mm (0.02-1.0 in), V-opening tolerance: ±0.05 mm (±0.002 in)
temperature:	Ambient to 150°C (302°F) for standard tool steel, higher with specialized materials

V-Die Set

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