Is it possible to turn conical surfaces on a regular lathe? How to realize?

In the ordinary lathe can be turned cone (face), depending on the length of the cone, the following chart shows several commonly used turning methods:

The small tool holder angle of rotation = tan (large head - small head) ÷ 2 ÷ cone length. Such as the workpiece large diameter head 80 small head diameter 50 length 80 then (80-50 )÷2=15 15 ÷ 80=0.1875

tan0.1875=10°36＇12"?

Then the knife holder is rotated 10°37'.

This requires calculating the speed of the transverse feed and the longitudinal feed, as shown in the figure whose speed ratio is realized by the hanging wheel.