a tapered surface is to be turned on an automaticlathe the work piece is 750 mm long with minimum and maximumdiameter of 100 & 200 mm at opposite ends the automaticcontrols on the lathe permit to surface speed to
be maintained at a constant value of 200 m/min by
adj Listing the rotational speed as a function of workpiece
diameter. Feed = 0. 25 mm/rev and depth of cut · 3. 0 m.
The rough geometry of the piece has already been formed,
and this operation will be the final cut. Determine (a) the
time required to turn the taper and (b) the rotational speeds
at the beginning and end of the cut.
