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Feed Rate Formula:
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Feed rate is the velocity at which the cutter is fed, that is, advanced against the workpiece in lathe operations. It is expressed in units of distance per revolution (mm/rev) or distance per minute (mm/min).
The calculator uses the feed rate formula:
Where:
Explanation: The feed rate determines how fast the cutting tool moves along the workpiece, affecting surface finish, tool life, and machining time.
Details: Proper feed rate calculation is essential for achieving desired surface finish, maximizing tool life, maintaining dimensional accuracy, and optimizing machining efficiency in lathe operations.
Tips: Enter RPM (rotations per minute) and feed per revolution (mm/rev). Both values must be positive numbers. The calculator will compute the feed rate in mm/min.
Q1: What is a typical feed rate for lathe operations?
A: Feed rates vary based on material, tool type, and operation. Common ranges are 0.05-0.5 mm/rev for roughing and 0.02-0.2 mm/rev for finishing.
Q2: How does feed rate affect surface finish?
A: Higher feed rates generally produce rougher surfaces, while lower feed rates create smoother finishes but increase machining time.
Q3: What factors influence feed rate selection?
A: Material hardness, tool material, depth of cut, desired surface finish, and machine capability all influence optimal feed rate selection.
Q4: Can I use this calculator for milling operations?
A: While the basic formula is similar, milling typically uses feed per tooth calculations. This calculator is specifically designed for lathe operations.
Q5: How does feed rate relate to chip formation?
A: Proper feed rate ensures continuous chip formation, prevents built-up edge, and maintains efficient material removal without overloading the tool.