Title 90D3 / 90E3
Learning Control Operator’s Manual
A - 63639E - 108
01 ’05.04.20 N.Sonoda Newly designed Sheet 045
Edit Date Design Description / 064
7.4 Tandem Learning control function
Tandem Learning control is Learning control combined with Tandem control. By means that two motors are
controlled as one axis and Learning control is added, this function can achieve high precision processing in
the special applications.
Note This function is available with series 90D3 version 02 or later.
1) Position Tandem Learning control
Merit : It can realize high accuracy to learn the position deviation with both sides of long
workpiece which have weak stiffness chucked and driven by two motors.
Applicable machine : Cam grinder, Crankshaft grinder, and etc.
2) Torque tandem Learning control
Merit : Large torque of double motor can achieve leaning of the position deviation due to
large cutting torque.
αis300 or αis500 requires torque tandem in spite of single
motor, because they have double coils inside one motor and use two amplifiers. We
call this “double coil tandem control” as a special case of torque tandem.
Applicable machine : Helical gear shaper without helical slide, Helical broach machine, Accurate press, etc