Conoid cam 1 rotates about fixed axis A-A. Carriage 2, in which cam 1 rotates, is connected by screw pair C to screw 3. Follower 4 slides in fixed guide D and its pointed tip slides along cam 1. Carriage 2 with cam 1 can be traversed along axis A-A by turning screw 3. The rotation of conoid cam 1 is proportional to one independent variable, for instance, x, and the travel of carriage 2 is proportional to the other independent variable, for instance, y. The displacement of follower 4 is proportional to a function of two independent variables. Thus ρ=f(x,y).
$3120$SmC,MO$