Can a 2 flute straight bit be used at a speed of 24000?
1. Applicability of 24,000 RPM High-speed scenario requirements: 24,000 RPM is a high speed, usually used for precision machining (such as PCB drilling, micro-parts cutting) or special materials (such as composite materials, aluminum alloys). If your application requires high speed for efficient cutting or fine surface treatment, this speed may be reasonable. Tool type matching: Double-edged straight knives are usually used for milling, grooving or cutting. It is necessary to confirm whether the tool design supports high-speed rotation (such as dynamic balance, whether the blade geometry angle is optimized). 2. Key considerations (1) Tool material and strength Material requirements: High-speed tools need to be made of carbide (such as tungsten steel), ceramic or diamond coating. Ordinary high-speed steel (HSS) may not be able to withstand the centrifugal force and heat at high speeds. Strength verification: It is necessary to ensure that the tool's maximum speed (nominal maximum RPM) is higher than 24,000 RPM, which is usually marked by the manufacturer. (2) Dynamic balance and vibration Dynamic balance level: At high speeds, the tool must be precisely balanced (such as ISO G2.5 or higher), otherwise it will cause vibration, reduced processing quality, or even equipment damage. Tool holder system: It is recommended to use a hydraulic tool holder or a heat shrink tool holder to avoid the runout error of traditional spring chucks. (3) Cooling and lubrication Heat dissipation problem: High-speed rotation easily generates high temperatures, and air cooling, oil cooling, or cutting fluid must be used to prevent tool annealing or workpiece deformation. Chip removal design: Double-edged straight knives must have good chip removal grooves to avoid chip accumulation and overheating. (4) Safety protection Protective cover requirements: High-speed tools must be equipped with closed protective covers to prevent breakage or chip splashing. The larger the tool diameter, the more dangerous the centrifugal force at high speed. Smaller diameter tools (e.g., under 3mm) are generally more suitable for 24,000 RPM.
3. Potential Risks
Tool Breakage: Material defects or fatigue can cause tool edge chipping, resulting in dangerous high-speed fragments.
Degraded Processing Quality: Vibration or overheating can result in substandard workpiece surface finish.
Equipment Wear: Spindle bearing life may be shortened if subjected to prolonged high speeds.
4. Recommended Procedures
Consult the tool manual: Confirm the manufacturer's maximum allowable speed (e.g., whether 24,000 RPM is within the safe range).
Adapt Machining Parameters: Adjust feed rate based on workpiece material (e.g., aluminum alloy: high speed + high feed; steel: reduced speed).
Test Cutting: Start with a low-load test run to monitor vibration and temperature rise.
Professional Consultation: If unsure, contact the tool supplier or equipment manufacturer for technical support.
Conclusion
Double-edged straight cutting tools can be used at 24,000 RPM, but only if the following conditions are met:
The tool material and design support high speeds;
It is dynamically balanced and has an appropriate diameter;
It is equipped with a cooling system and safety guards;
The machining parameters are compatible with the workpiece material.
