Customer Requirements
What the customer needed
The customer is a mold manufacturer producing:Automotive injection moldsEV structural moldsDie casting moldsHigh-volume production moldsAnnual output:
Case Study
Mold & Die Case Study 06 / 15Mold Base Machining Case Study
A mold base is a pre-assembled steel structure that holds all functional mold components together.
mold base machining case studymold die cnc machiningcnc machine for mold manufacturing
Project Overview
Standard case data fields.
Industry Mold & Die / Tooling System
Product Mold Base
Material S50C / P20 / 45# Steel / Pre-hardened Steel
Process CNC Milling + Drilling + Tapping + Grinding
Machine Model HYR VMC1060 / VMC1165
Tolerance +/-0.01 mm (system level)
Surface Finish Project based
Application Injection Mold / Die Casting Mold / Automotive Mold
Challenges
Machining difficulty
Although it looks simple, mold base machining determines the entire mold performance.It affects:Assembly PrecisionMold StabilityProduction CycleTool Life
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 Mold & Die / Tooling System Product Mold Base Materials S50C / P20 / 45# Steel / Pre-hardened Steel Process CNC Milling + Drilling + Tapping + Grinding Machine HYR VMC1060 / VMC1165 Tolerance +/-0.01 mm (system level) Application Injection Mold / Die Casting Mold / Automotive Mold
Introduction
The mold base is the structural foundation of all mold systems.
If we compare a mold to a machine: Core + Cavity = Functional SurfaceMold Base = Structural Skeleton Without a stable mold base: Core cannot align Cavity cannot function Ejection system fails Cooling system becomes unstable
What Is A Mold Base?
A mold base is a pre-assembled steel structure that holds all functional mold components together.
Basic structure: Top PlateCore PlateCavity PlateSupport PlateBottom Plate It integrates: Core system Cavity system Ejection system Cooling system Alignment system
Customer Background
The customer is a mold manufacturer producing: Automotive injection molds EV structural molds Die casting molds High-volume production molds Annual output: 500+ mold base systems Main requirements: High rigidity Precise alignment Long-term stability Fast assembly Standardization compatibility
Why Mold Base Machining Is Critical
Although it looks simple, mold base machining determines the entire mold performance.
It affects: Assembly PrecisionMold StabilityProduction CycleTool Life
Challenge 1
Mold bases contain multiple steel plates.
Multi-Plate Alignment Accuracy Even small deviation causes: Core misalignment Cavity mismatch Product defects
Challenge 2
Deep Hole Drilling Precision Mold bases include: Cooling channels Ejection guide holes Alignment pin holes Problem: Deep Hole DeviationCooling Inefficiency
Challenge 3
Large Structure Deformation Large mold bases suffer from: Machining stress Clamping distortion Residual deformation
Challenge 4
Assembly Compatibility Mold bases must match: Standard mold components Core inserts Cavity systems Even small mismatch leads to: Assembly failure Production delay
Fixed Plate
Function: Support Cavity Side
Moving Plate
Function: Support Core Side
Support Plate
Function: Load Distribution
Ejection Plate
Function: Part Release System
Guide System
Function: Alignment Control Includes: Guide pillars Bushings
S50C Steel
Advantages: Good MachinabilityStable Structure Applications: Standard mold bases
P20 Steel
Advantages: Pre-hardenedGood Stability Applications: Medium-load molds
45# Steel
Advantages: Low CostEasy Machining Applications: Standard tooling bases
HYR VMC1060
Best for: Medium mold bases Automotive molds Advantages: Balanced rigidity High precision drilling
HYR VMC1165
Best for: Large mold bases EV structural molds Advantages: Heavy cutting Large travel
Step 1
Material Preparation Steel plates Pre-cut blocks
Step 2
Rough Milling Remove: 60-75% Material
Step 3
Stress Relief Reduce: Internal StressDeformation Risk
Step 4
Precision Drilling Guide holes Cooling channels Ejection holes
Step 5
Plate Surface Machining Flatness control Parallelism adjustment
Step 6
Tapping & Threading Fastener holes Assembly connections
Step 7
Finish Machining Requirement: +/-0.01 mm system tolerance
Step 8
Assembly Fitting Plate alignment Guide system check
Flatness Inspection
Ensures: Plate alignment Structural stability
Hole Position Inspection
Ensures: Guide accuracy Assembly compatibility
CMM Inspection
Ensures: Full system geometry
Assembly Test
Ensures: Smooth motion No interference
Results
Item
After HYR CNC optimization: Before After Alignment Accuracy +/-0.02 mm +/-0.01 mm Assembly Time 100% -25% Defect Rate 2.0% 0.2% Mold Stability Medium High Delivery Efficiency Standard +30%
Impact On Mold System
Mold base determines: Structural StabilityProduction EfficiencyTool Lifetime Without a good mold base: Core and cavity cannot perform properly Even high-precision machining becomes meaningless
HYR VMC1060
Standard mold bases
HYR VMC1165
Large structural mold bases
Related Articles
Injection Mold Machining Case Study Automotive Mold Machining Case Study Die Casting Mold Machining Case Study Mold Core Machining Case Study Mold Cavity Machining Case Study
What is a mold base?
A structural framework that holds all mold components together.
Why is mold base important?
It determines alignment accuracy and mold stability.
What materials are used?
S50C, P20, and 45# steel.
What is the main challenge?
Maintaining system-level precision across multiple plates.
Conclusion
The mold base is the structural foundation of all mold systems.
It ensures alignment, stability, and long-term performance of injection molds, die casting molds, and automotive tooling systems.
With high-precision CNC machining and stable manufacturing processes, HYR CNC delivers reliable mold base solutions for global tooling manufacturers.
Results
Before and after machining improvement.
| Item | Before | After |
|---|---|---|
| Result 1 | Before optimization | After HYR CNC optimization: |
| Result 2 | Before optimization | Alignment Accuracy |
| Result 3 | Before optimization | +/-0.02 mm |
FAQ
Common buyer questions for this case.
What is this mold case about?
This page covers mold base 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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