Press Brake Multi-V Die

The Strategic Advantage of Multi-V Dies in Modern Press Brake Operations

What Are Multi-V Dies?

• A heavy-duty bottom die block with different V-openings on its four sides

• Operators only rotate the block to switch V-sizes, no full die replacement needed

• Perfect for job shops, general fabrication, and high-mix production

Material & Engineering for Long Life

• Made from 42CrMo alloy steel, stronger than regular steel

• Surface hardened to HRC 47±3

• Stays stable and accurate even after thousands of bends in stainless steel and high-tensile materials

Why Multi-V Dies Are Better Than Single-V Dies

Faster Setup, Less Downtime

• Rotate the die to switch between V-sizes (16mm, 22mm, 35mm, 50mm)

• Much faster than changing single-V dies

Save Storage Space

• One Multi-V die replaces four single-V dies

• Frees up tool room space

Lower Cost Per Job

• Covers most bending jobs for materials 2mm to 10mm+

• Versatile and provides long-term value

Lower Total Cost of Ownership (TCO)

• Reduces tool inventory and upfront investment

• Less maintenance and longer tool life

Precision: Smooth Radius for Better Quality

• Precision-machined smooth, hardened radius

• Reduces friction and surface marks

• Creates consistent bend radii

• Ideal for aerospace, electronics, and high-end cabinetry

Maintenance Tips to Extend Tool Life

• Keep V-openings clean from dust and debris

• Use bending lubricants to reduce friction

• Do not use more pressure than the die is rated for

Press Brake Dies: Basics

Core Parts

• Upper Die: Mounted on the moving slider, applies pressure; shape determines the outer bend shape

• Lower Die: Fixed on the table, supports the sheet; V-groove width affects bending force and finish

How They Work

1. Place sheet metal on the lower die

2. Upper die presses down

3. Sheet bends to match the die shape

4. Upper die returns, remove the finished part

Features of Press Brake Dies

• Strong and wear-resistant (HRC 45–50)

• Can be customized for special shapes

• Must fit your bending machine

• Standard sizes fit most brands (Amada, Trumpf, Wila)

Common Types of Press Brake Dies

By Shape

• Standard straight die: for general bending

• Sharp-angle die: for small angles and springback

• Gooseneck die: for deep U-shaped parts

• Arc die: for rounded bends

• Custom irregular dies: for special parts

By Material Use

• Standard dies: for mild steel, galvanized steel

• High-strength dies: for stainless steel, tough materials

• Thin-material dies: prevents scratches and warping

By Machine Interface

• Amada/Promecam type

• Trumpf/Wila type

• New standard type (fits most machines)

How to Choose the Right Dies

1. Match the Material

• Mild steel: low springback

• Stainless steel: high springback, needs angle compensation

2. Follow the “8x Rule”

• V-width = 8 × material thickness

• Thin material: use V = 6 × thickness

• Thick material: use V = 10–12 × thickness

3. Do Not Exceed Pressure Limits

• Calculate required bending force

• Leave 10–15% safety margin

• Use thick or segmented dies for heavy loads

4. Choose the Right Punch Shape

• Standard punch: general bending

• Sharp-angle punch: small angles

• Gooseneck punch: deep channels

• Custom punch: special shapes

Important Notes

• Always consider material springback

• Follow the 8x rule to avoid cracking

• Make sure the die fits your machine

42CrMo International Standard Comparison Table (Essential for Selection)

press brake Multi-V Die drawing

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