The technical R&D teacher at my school asked this for an extra credit question on the Final.
How fast is the edge of a router bit moving?
Given a blade of diameter D inches, revolving at a rate of R rpm, a point on the perimeter of the blade will travel the length of the circumference C each revolution.
Speed = distance / time
C = pi x D
pi ~= 3.1416
Speed:
Distance/revolution x revolutions/time = C x R inches/minute
What is the speed of a 1" router blade, moving at 20,000 rpm at the perimeter. Answer must be in miles per hour.
How fast is the edge of a router bit moving?
Given a blade of diameter D inches, revolving at a rate of R rpm, a point on the perimeter of the blade will travel the length of the circumference C each revolution.
Speed = distance / time
C = pi x D
pi ~= 3.1416
Speed:
Distance/revolution x revolutions/time = C x R inches/minute
What is the speed of a 1" router blade, moving at 20,000 rpm at the perimeter. Answer must be in miles per hour.