Key Insight：Titanium’s poor thermal conductivity demands conservative spindle speeds to prevent heat buildup and tool failure.
Surface Speed Foundation: The optimal spindle speed for CNC titanium machining is derived from the recommended surface cutting speed of 60-100 FPM (18-30 m/min) for titanium alloys. This conservative range accounts for titanium’s tendency to work-harden and its chemical reactivity with cutting tools.
Speed Calculation Formula
Calculation
RPM = (Surface Speed × 4) / Tool Diameter
Where:
- Surface Speed: 60-100 FPM for titanium
- Tool Diameter: in inches
Practical Speed Ranges by Tool Size
| Tool Diameter (mm) | Roughing RPM | Finishing RPM | Surface Speed (m/min) |
|---|---|---|---|
| 3 | 1,910-3,183 | 3,183-6,366 | 18-30 |
| 6 | 955-1,592 | 1,592-3,183 | 18-30 |
| 12 | 477-796 | 796-1,592 | 18-30 |
| 25 | 229-382 | 382-764 | 18-30 |
Data Visualization
Critical Parameters
Machine Requirements
High-Torque Spindle: Titanium machining requires 300-1,500 Nm torque at low speeds (200-400 RPM) for heavy cuts. High-speed operations (3,000-8,000 RPM) need 80-250 Nm torque with specialized cooling systems.
Disclaimer
All experimental data presented in this paper are derived from controlled production environments and standardized test procedures. However, due to differences in equipment models, material batches, and on-site operating conditions, readers are advised to verify and adjust technical parameters according to their specific application scenarios before practical implementation.
The research results and technical insights shared herein are based on the author’s professional experience and experimental observations. The author and the affiliated institution shall not be liable for any direct, indirect, or consequential damages (including but not limited to equipment damage, product quality issues, or production losses) arising from the improper use of the information provided in this paper.
All experimental data presented in this paper are derived from controlled production environments and standardized test procedures. However, due to differences in equipment models, material batches, and on-site operating conditions, readers are advised to verify and adjust technical parameters according to their specific application scenarios before practical implementation.
The research results and technical insights shared herein are based on the author’s professional experience and experimental observations. The author and the affiliated institution shall not be liable for any direct, indirect, or consequential damages (including but not limited to equipment damage, product quality issues, or production losses) arising from the improper use of the information provided in this paper.
