Respuesta :
The assumption is that the spindle/motor is 90% efficient.
What is RPM?
RPM, or “Revolutions Per Minute”, is a measure of how fast a rotating object is moving. RPM is used to measure the speed of a variety of items, including rotors on helicopters, car engines, and even fans. RPM is calculated by counting the number of rotations a given object makes in a certain amount of time. This calculation is often done electronically, by attaching a sensor to the object and counting the number of pulses it sends out. RPM is widely used in the automotive industry, and is an important factor in determining the performance of an engine or other moving parts. It is also used by mechanics to diagnose and troubleshoot engine problems.
Template
Inputs:
Cutting Speed (S, ft/min):
Feed per Tooth (f, in/tooth):
Tool Diameter (D, in):
Radial Depth of Cut (R, in):
Axial Depth of Cut (A, in):
Calculations:
RPM (R):
R = S / (π*D)
Fe ed Rate (F, in / min):
F = R * f
MRR (M, in³ / min):
M = ( π /4 ) * D ² * F * ( R+A )
HP at Tool (H):
H = (M*62.5)/1714
HP of motor (Hm):
Hm = H/0.9 or 90%
To learn more about RPM
https://brainly.com/question/29064427
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