Feed Per Tooth Calculator
The feed per tooth calculator is a valuable tool in machining, helping operators determine the optimal feed rate for each cutting tool tooth. It ensures efficient material removal and prolongs tool life while maintaining surface finish quality.
Formula
The formula for feed per tooth is:
fz = (vf × n) / (z × ap)
Where:
- fz is the Feed Per Tooth (mm).
- vf is the Cutting Speed (mm/min).
- n is the Spindle Speed (RPM).
- z is the Number of Teeth on the cutting tool.
- ap is the Depth of Cut (mm).
How to Use
- Input the cutting speed (vf) in mm/min.
- Enter the spindle speed (n) in RPM.
- Specify the number of teeth (z) on the tool.
- Provide the depth of cut (ap) in mm.
- Click “Calculate” to find the feed per tooth.
Example
If the cutting speed (vf) is 200 mm/min, spindle speed (n) is 3000 RPM, the number of teeth (z) is 4, and depth of cut (ap) is 2 mm, the feed per tooth can be calculated as:
fz = (200 × 3000) / (4 × 2) = 750 mm
FAQs
- What is feed per tooth in machining?
It represents the distance a cutting tool travels per tooth during one revolution. - Why is feed per tooth important?
It optimizes material removal rates, improves surface finish, and prevents tool wear. - What units are used for feed per tooth?
Typically, feed per tooth is measured in millimeters (mm). - What happens if feed per tooth is too high?
Excessive feed can cause tool breakage, poor surface finish, and machine vibration. - What happens if feed per tooth is too low?
Insufficient feed may lead to inefficient cutting and tool rubbing, reducing tool life. - How can I determine the optimal feed per tooth?
Use manufacturer recommendations or a feed per tooth calculator for precise values. - Does tool material affect feed per tooth?
Yes, tool materials like carbide or HSS influence optimal feed rates. - Can feed per tooth vary by material type?
Absolutely, harder materials require lower feed rates compared to softer materials. - What role does spindle speed play in feed per tooth?
Higher spindle speeds increase the calculated feed per tooth for the same cutting speed. - Can this calculator be used for all machining processes?
Yes, it applies to milling, drilling, and other processes using cutting tools. - What are the typical ranges for feed per tooth?
The range varies based on tool type, material, and machining conditions but is usually between 0.01 and 0.5 mm. - How often should feed per tooth be calculated?
Recalculate whenever tool, material, or cutting parameters change. - Does tool wear affect feed per tooth?
Worn tools may require adjustments in feed rates to maintain efficiency. - Is feed per tooth related to chip load?
Yes, feed per tooth is synonymous with chip load, indicating material removed per tooth per revolution. - What other factors influence feed per tooth?
Factors include machine stability, coolant use, and tool geometry.
Conclusion
The feed per tooth calculator simplifies precision machining, ensuring optimal tool performance and material efficiency. Proper calculation of feed rates enhances productivity, reduces costs, and maintains the quality of machined components.