
3.SELECTING A MOTOR SPECIFICATIONS FOR THE αiS/αi SERIES B-65262EN/03
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3.3.2.2 Specifications of moving object
Be sure to enter data in this row. Data entered here is needed for
determining the approximate motor load conditions (inertia, load
torque).
- Mass(weight) of driven parts
Enter the mass(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.
- Axis movement direction
Enter horizontal, vertical, slant, or rotation as the movement
directions of driven parts such as the table and tool post.
Be sure to enter data because the axis movement direction is required
for calculating the constant load torque and regenerative energy.
- Angle of the slant
Enter the angle which the movement direction forms with a horizontal
surface only when the movement direction slants upward.
Be sure to enter data because the axis movement direction is required
for calculating the constant load torque and regenerative energy.
- Counter balance
Enter the weight of the counter balance in the vertical axis, if
provided.
Enter whether the counter balance is made by a weight or force as this
influences inertia.
- Table support
Enter the type of table slide (e.g. rolling, sliding or static pressure).
Enter a special slide way material like Turcite, if used. Also enter the
friction coefficient value. This item is significant in estimating the
friction coefficient for calculating mainly the load torque.
- Ball screw
For a ball screw, enter the diameter, pitch, and length in order.
If a rack and pinion or other mechanism is used, also enter the
traveling distance of the machine tool per revolution of the pinion.
- Rack and pinion
For a rack and pinion, enter the diameter and thickness of the pinion.
- Friction coefficient
Enter the friction coefficient of the table.