Customer Requirements
What the customer needed
The customer is a Tier-1 automotive stamping supplier producing:EV chassis bracketsBody structural partsReinforcement platesMetal connector componentsAnnual production:
Case Study
Mold & Die Case Study 07 / 15Progressive Stamping Die Machining Case Study
Progressive stamping dies are widely used in high-volume metal part production.
progressive stamping die machining case studymold die cnc machiningcnc machine for mold manufacturing
Project Overview
Standard case data fields.
Industry Stamping / Tool & Die
Product Progressive Die
Material D2 / SKD11 / DC53 / Cr12MoV
Process CNC Milling + Wire EDM + Grinding + Heat Treatment
Machine Model HYR VMC1060 / VMC1165
Tolerance +/-0.003-0.01 mm
Surface Finish Project based
Application Automotive Body Parts / EV Brackets / Metal Components
Challenges
Machining difficulty
Progressive dies combine:High Hardness Steel+Multi-Stage Precision+High Impact Load+Mass Production RequirementBecause all stations must align perfectly for continuous production.
HYR CNC Solution
Machine configuration
Machine: HYR VMC or gantry CNC system selected according to mold size, steel hardness and accuracy target
Process: Rough machining, stress relief, semi-finishing, EDM support, polishing preparation and inspection
Accuracy Control: Thermal stability, fixture rigidity, finishing allowance control and CMM inspection
Cost Method: Published with existing website assets first to keep implementation cost low
Machining Process
Timeline from raw material to inspection.
01 Material preparation
02 Rough machining
03 Stress relief
04 Finish machining
05 Inspection
Full Case Article
Machining background, difficulty and solution logic.
Quick Facts
Item
Details
Industry Stamping / Tool & Die Product Progressive Die Materials D2 / SKD11 / DC53 / Cr12MoV Process CNC Milling + Wire EDM + Grinding + Heat Treatment Machine HYR VMC1060 / VMC1165 Tolerance +/-0.003-0.01 mm Application Automotive Body Parts / EV Brackets / Metal Components
Introduction
Progressive stamping dies are widely used in high-volume metal part production.
They are essential for manufacturing: Automotive body panels EV structural brackets Electrical connectors Appliance metal parts Industrial metal components In modern manufacturing: Progressive Die=High-Speed Mass Production System
What Is A Progressive Die?
A progressive die is a multi-station stamping tool where a metal strip moves through multiple forming stages in a single die set.
Basic workflow: Metal CoilFeeding SystemMultiple Stamping StationsFinal Part Output Each station performs a specific operation: Punching Bending Cutting Forming Trimming
Customer Background
The customer is a Tier-1 automotive stamping supplier producing: EV chassis brackets Body structural parts Reinforcement plates Metal connector components Annual production: 1,000,000+ stamped parts per month Key requirements: Extremely high durability Multi-station precision alignment Long tool life High-speed production stability
Why Progressive Die Machining Is Difficult
Progressive dies combine: High Hardness Steel+Multi-Stage Precision+High Impact Load+Mass Production Requirement
Challenge 1
Each station must align perfectly.
Multi-Station Alignment Accuracy Even a small deviation causes: Hole misalignment Part deformation Scrap increase
Challenge 2
This makes machining very difficult.
High Wear Resistance Requirement Die materials like D2 / SKD11 are extremely hard: 58-62 HRC
Challenge 3
High Impact Load During stamping: Tons of Force Per Stroke Leading to: Tool wear Edge collapse Fatigue cracking
Challenge 4
Each requires different precision levels.
Complex Multi-Operation Geometry Progressive dies include: Punching zones Bending zones Forming zones Cutting zones
Punch
Function: Material Cutting / Hole Formation
Die Block
Function: Forming Structure Base
Stripper Plate
Function: Material Removal Assistance
Guide System
Function: Alignment Control Between Stations
Pilot Pins
Function: Precise Positioning of Strip Material
SKD11
Advantages: High Wear ResistanceHigh Hardness Applications: Standard stamping dies
D2 Steel
Advantages: Excellent DurabilityLong Tool Life Applications: High-volume stamping
DC53
Advantages: Improved Toughness Over SKD11 Applications: High-impact stamping dies
Cr12MoV
Advantages: Cost EffectiveGood Hardness Applications: Medium-load dies
HYR VMC1060
Best for: Die blocks Medium stamping dies
HYR VMC1165
Best for: Large progressive dies Automotive structural dies
Step 1
Material Preparation Forged tool steel blocks Pre-hardened plates
Step 2
Rough Machining Remove: 70-85% Material
Step 3
Stress Relief Reduce: Internal stress Deformation risk
Step 4
Semi-Finishing Station layout machining Alignment structure preparation
Step 5
Heat Treatment Increase: Hardness Wear resistance
Step 6
Finish Machining Requirement: +/-0.003-0.01 mm
Step 7
Wire EDM Machining Used for: Punch edges Complex profiles High-precision contours
Step 8
Assembly & Alignment Multi-station calibration Pilot pin alignment
CMM Inspection
Ensures: Station alignment Hole accuracy Geometry consistency
Hardness Test
Ensures: Heat treatment quality
Trial Stamping
Validates: Part quality Wear resistance Production stability
Results
Item
After HYR CNC optimization: Before After Tool Life 100% +35% Accuracy +/-0.02 mm +/-0.005 mm Scrap Rate 2.5% 0.3% Production Stability Medium High Maintenance Cost High Reduced 25%
Impact On Automotive Industry
Progressive dies directly support: EV chassis production Automotive body structure High-volume metal manufacturing
HYR VMC1060
Standard stamping die machining
HYR VMC1165
Large progressive die systems
Related Articles
Die Casting Mold Machining Case Study Automotive Mold Machining Case Study Mold Core Machining Case Study Mold Cavity Machining Case Study EV Structural Component Machining
What is a progressive die?
A multi-stage stamping tool used for mass production of metal parts.
What materials are used?
SKD11, D2, DC53, Cr12MoV.
Why is precision important?
Because all stations must align perfectly for continuous production.
What industries use it?
Automotive, EV, electronics, appliance manufacturing.
Conclusion
Progressive stamping dies are the backbone of high-volume metal manufacturing.
They require extreme precision, wear resistance, and stable multi-station alignment.
With advanced CNC machining and die engineering expertise, HYR CNC provides reliable solutions for global stamping die manufacturers.
Results
Before and after machining improvement.
| Item | Before | After |
|---|---|---|
| Result 1 | Before optimization | After HYR CNC optimization: |
| Result 2 | Before optimization | Tool Life |
| Result 3 | Before optimization | 100% |
FAQ
Common buyer questions for this case.
What is this mold case about?
This page covers progressive die requirements, machining difficulty, process planning and machine selection.
Which machines are recommended?
HYR VMC850, VMC1060, VMC1165 and gantry CNC systems are selected according to mold size and machining difficulty.
Can HYR-CNC support similar mold projects?
Yes. Send drawings, mold steel, tolerance, surface finish and mold size for a suitable machining proposal.
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