With this tool, you'll be able to calculate the speed and feeds or reamers, drill bits, millers, or any other machine tool.

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This calculator has two modes, and both use the formulas presented in the previous section to calculate the rotational speed and feed rate, but there are some differences:

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One of the parts, the tool or the workpiece, will rotate in machining. For example, in drilling, the rotating part is the drill bit, while in turning, the rotating part is the workpiece.

? The surface speed and chip load values this calculator uses come from Machinery's Handbook, 26th Edition, Chapter: Machining Operations.

If the chip load is in in/tooth, the resulting feed rate is in in/min, and if the chip load is in mm/tooth, the resulting feed rate is in mm/min.

The surface speed, also known as cutting speed, depends on the machine tool operation, the tool material, and the workpiece material. The surface speed is not a fixed number but a range of recommended values, going from a minimum to a maximum recommended speed. The possibilities are enormous as there are usually two tool materials, eight operations, and a considerable amount of workpiece materials. Fortunately, our calculator will determine the value of the recommended surface speed for you when you specify the operation and materials.

Calculating the feed rate will give an idea of the time it will take to perform our machining work. On the other hand, the rotational speed calculation of drills or other machine tools will help us determine the spindle speed and predict the amount of electrical power needed. For that reason, we created this speeds and feeds calculator.

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One of the machine operations this calculator supports is turning, in which, intending to diminish its diameter, a circular piece (the workpiece) rotates while in contact with a stationary cutting tool.

If you have gotten this far, thanks for reading. Hopefully, now you have a better idea of how to calculate drill speeds, the speeds and feeds of reamers, and many more.

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