
B-65232EN/03 DESCRIPTIONS FOR FANUC AC SERVO MOTOR β series 4.SELECTING A MOTOR
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4.1.2 Data Items to be Entered
The machine tool builder is to provide the following data: direction of
movement, feed mechanism, mechanical specifications, and external
position detector. If a particular specification value is desired, specify
the value. FANUC will enter an appropriate value, considering the
overall specification. Each item is described in detail below.
(1) Specifications of moving object
Data in this blank are used for determining the values of motor
load conditions (inertia, torque). Fill in blanks of all items.
(a) Direction of movement
Enter the movement directions of driven parts such as table,
tool post, etc.
Write the angle from the horizontal level, if their movement
directions are slant (Example : Slant 60°)
Whether their movement directions are horizontal or
vertical (or slant) is necessary for calculating the
regenerative energy. Fill in this blank without fail.
(b) Weight of the moving object
Enter the weight of driven parts, such as table , tool post,
etc. by the maximum value including the weight of
workpiece, jig, and so on. Do not include the weight of the
counter balance in the next item in this item.
(c) Counter balance
Enter the weight of the counter balance in the vertical axis,
if provided.
Write the force in case of hydraulic balance.
(d) Table support
Enter the type of table slide as to rolling, sliding, or static
pressure type. If a special slide way material like Turcite is
used, note it.
(2) Feed mechanism
Enter values for whichever items are pertinent.
(a) Ball screw
Enter the diameter, pitch, and length of the ball screw in
order.
(b) Rack and pinion
Enter the pinion diameter and amount of travel for the
machine tool, per revolution of the pinion.
(c) Others
When using a feed mechanism other than the above,
provide details of the mechanical section, and enter a travel
amount for the machine tool.