Customer Requirements
What the customer needed
The customer is a global electronics supplier producing:Automotive wiring harness connectorsEV battery connectors5G communication modulesIndustrial control connectorsAnnual production:
Case Study
Mold & Die Case Study 13 / 15Connector Mold Machining Case Study
Automotive ECU / EV Battery Connectors / 5G Devices / Industrial Electronics
connector mold machining case studymold die cnc machiningcnc machine for mold manufacturing
Project Overview
Standard case data fields.
Industry Electronics / Precision Mold & Die
Product Connector Mold
Material S136 / SKD61 / H13 / Beryllium Copper / Tungsten Steel
Process Micro CNC + EDM + Wire Cut + Precision Grinding
Machine Model HYR VMC850 Ultra-Precision
Tolerance +/-0.001-0.003 mm
Surface Finish Project based
Application Automotive ECU / EV Battery Connectors / 5G Devices / Industrial Electronics
Challenges
Machining difficulty
Connector molds combine:Micro Geometry+High-Speed Mass Production+Electrical Performance Sensitivity+Ultra-High Consistency RequirementsBecause it directly affects electrical signal reliability.
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 Electronics / Precision Mold & Die Product Connector Mold Materials S136 / SKD61 / H13 / Beryllium Copper / Tungsten Steel Process Micro CNC + EDM + Wire Cut + Precision Grinding Machine HYR VMC850 Ultra-Precision Tolerance +/-0.001-0.003 mm Application Automotive ECU / EV Battery Connectors / 5G Devices / Industrial Electronics
Introduction
Connector molds are used to produce precision electrical connectors that ensure signal transmission, power delivery, and data communication in modern electronic systems.
They are the invisible backbone of all electronic products.
In today's industry: No Connector = No Electronics System
What Is A Connector Mold?
A connector mold is a high-precision injection or stamping mold used to manufacture electrical connector components such as:
Plastic or Metal Material Injection/StampingMicro Feature FormingHigh-Speed ProductionStable Electrical Performance Output
Terminal housings Pin sockets Signal connectors Power connectors Basic structure: Mold BaseMicro Core InsertsPrecision Cavity SystemMicro Terminal Forming System During production:
Customer Background
The customer is a global electronics supplier producing: Automotive wiring harness connectors EV battery connectors 5G communication modules Industrial control connectors Annual production: 2 Billion+ connector components per year Key requirements: Micro-level precision High-speed mass production Stable electrical performance Zero failure tolerance Multi-cavity consistency
Why Connector Mold Machining Is Extremely Difficult
Micro Geometry+High-Speed Mass Production+Electrical Performance Sensitivity+Ultra-High Consistency Requirements
Connector molds combine:
Challenge 1
Micro-Scale Feature Precision Connector parts include: Micro pins Micro slots Micro locking structures Tolerance: +/-0.001 mm level control
Challenge 2
Multi-Cavity Consistency Modern connector molds include: 8 / 16 / 32 / 64 Cavity Systems Even tiny deviation causes: Signal instability Assembly failure Batch rejection
Challenge 3
High-Speed Wear Resistance Production cycle: High-speed stamping or injection (millions of cycles) Leads to: Rapid tool wear Micro deformation Edge rounding
Challenge 4
Electrical Performance Stability Connector quality affects: Signal transmission Resistance stability Thermal behavior Even micro defects cause: Signal loss System failure
Automotive Connector Mold
Function: EV & ECU Signal Transmission
High-Speed Terminal Mold
Function: Metal Terminal Forming
PCB Connector Mold
Function: Circuit Board Connection
Battery Connector Mold
Function: High-Power EV Connection System
S136 Steel
Advantages: High Corrosion ResistanceHigh Polish CapabilityStable Precision
SKD61
Advantages: Heat ResistanceStable High-Speed Performance
H13
Advantages: High StrengthImpact Resistance
Beryllium Copper
Advantages: Excellent ConductivityHeat Dissipation Capability
HYR VMC850 Ultra Precision
Best for: Micro connector cores Terminal precision inserts High-detail cavities Features: Thermal stability control Micro vibration suppression High-speed finishing capability
Step 1
Material Preparation High-grade tool steel Copper alloys for inserts
Step 2
Micro Rough Machining Remove: 50-70% Material (Controlled)
Step 3
Stress Relief Treatment Reduce: Internal micro stress Deformation risk
Step 4
Micro CNC Finishing Requirement: +/-0.001-0.003 mm
Step 5
Wire EDM Micro Cutting Used for: Pin holes Micro slots Complex profiles
Step 6
Precision Grinding Ensures: Flatness Parallelism Surface stability
Step 7
Micro Assembly Testing Cavity alignment Pin insertion test
CMM Micro Inspection
Ensures: Micro geometry accuracy Position consistency
Electrical Performance Test
Ensures: Signal stability Resistance control
Wear Simulation Test
Ensures: Long-term durability
Results
Item
After HYR CNC optimization: Before After Accuracy +/-0.01 mm +/-0.002 mm Defect Rate 2.5% 0.15% Cavity Consistency Medium High Tool Life Standard +30% Production Stability Medium High
Industrial Impact
They are the nervous system of modern industry.
Connector molds directly affect: Automotive electronics EV battery systems 5G communication Industrial automation
HYR VMC850 Ultra Precision
Micro connector machining
HYR VMC1060
Medium connector systems
Related Articles
Medical Mold Machining Case Study Optical Mold Machining Case Study Hot Runner Mold Case Study Progressive Die Case Study Die Insert Machining Case Study
What is a connector mold?
A high-precision mold used to manufacture electrical connectors for electronic systems.
Why is it important?
Because it directly affects electrical signal reliability.
What materials are used?
S136, SKD61, H13, beryllium copper.
What is the main challenge?
Achieving micro-level precision and batch consistency.
Conclusion
Connector molds are the foundation of modern electronic systems.
They require ultra-high precision, micro-scale machining capability, and absolute consistency.
With advanced CNC machining technology, HYR CNC delivers reliable connector mold solutions for global electronics and automotive industries.
Results
Before and after machining improvement.
| Item | Before | After |
|---|---|---|
| Result 1 | Before optimization | After HYR CNC optimization: |
| Result 2 | Before optimization | Accuracy |
| Result 3 | Before optimization | +/-0.01 mm |
FAQ
Common buyer questions for this case.
What is this mold case about?
This page covers connector mold 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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