Case Study

Aluminum Heat Sink Machining

Aluminum heat sink high-speed machining for thin fins and anodizing-ready surfaces.

aluminum heat sink machiningcnc heat sink machining

Case Overview

Core project data for this machining case.

Industry Electronics

Application Heat sink

Material Aluminum 6063

Machine Model HYR VMC850

Controller Fanuc / Siemens / Mitsubishi

Spindle Speed 12000 rpm

ATC Capacity 24-60 tools

Travel X/Y/Z Project based

Tolerance +/-0.02 mm

Surface Finish Ra 1.6

Cycle Time 8 min

Production Volume 5000 pcs/month

Country Japan

Customer Background

Production context behind the case.

This project comes from a Electronics manufacturing requirement for Heat sink. The buyer needed stable machining quality, repeatable inspection results and a machine configuration suitable for real production rather than a one-time sample.

Machine Selection

Why this machine configuration was selected.

HYR-CNC selected the machine plan around part size, material, tolerance, surface finish, tool capacity and expected production volume. The recommended setup focuses on rigidity, spindle stability, fixture access, tool change efficiency and inspection control.

Problem

Machining problem to solve

Fin bendingBurr removalSurface scratches

Solution

HYR-CNC machining plan

Protect thin finsReduce burrsImprove cycle time

Machine Used

Recommended machine configuration

Machine: HYR VMC850

Spindle: High-speed spindle for stable finishing

ATC: Automatic tool changer for multi-process machining

Controller: Fanuc / Siemens / Mitsubishi options

Coolant: High pressure coolant and chip evacuation

Process

Timeline from raw material to inspection.

01 Blank Preparation

02 Rough Pocket Milling

03 Fin Machining

04 Drilling & Tapping

05 Deburring

06 Surface Inspection

Result

Before and after machining improvement.

Item	Before	After
Fin Deformation	0.10 mm	0.03 mm
Cycle Time	12 min	8 min
Burr Level	High	Low

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