Re: [CAD_CAM_EDM_DRO] Spindle power VS Motor power

fortino wrote:

>Hi groups,
>
>Supposed, I design 3 axis CNC Milling for about 100 watts for each axis.
>What is the suitable Spindle motor power to match the axis motor power? I
>can't have under power or over power spindle, can I.
>
>

It is not so simple. Watts is power - which translates to force x
speed. So, a 100 Watt
motor can deliver 1 million Lbs (Newtons, if you prefer) force at a tiny
velocity, or
just one Lb force at a million times faster rate. You need to analyze
the materials and
the type of cutters you will be working with, and make an estimate of
the linear force
applied to the workpiece by the cutter. Then, decide what feedrate will
be needed, and
then you can calculate the axis and spindle power required. Note that
for drilling, there
is minimal axis load, but the spindle load can be very high. For best
surface finish,
proper feedrates and speeds are needed, so the larger drills require a
fair bit of
horsepower for this work.

See my page on this at http://www.timgoldstein.com/cad_cam/motor.htm

Jon