
A-78640E
Sheet
Title
Draw
No.
04 Feb.08.’03 Part of (4) is added or modified. Addition of 2.16.5
03 Jul.02.’02 A. Fukumoto Part of (3) is added or modified. T.Endo
02 May.13.’02 A. Fukumoto Addition of Tool Radius control for 5-axis machining etc T.Endo
Ed. Date Design Description
Date Jan.25.’02 Desig. A.Fukumoto Apprv. T.Endo
FANUC Series 16i /18i -TB
Specifications of AI High-Precision Contour Control /
I Nano High-Precision Contour control
125/190
• Examples of setting if the acceleration pattern differs depending on whether acceleration or
deceleration is in progress and whether the movement is in the minus or plus direction
From the effect of gravity and friction, torque for acceleration/deceleration is
different on each condition, such as acceleration, deceleration or plus move (up),
minus move (down).
The following example is for the vertical axis and gravity and friction torque are
assumed as follows.
Torque of gravity : 20 (Nm)
Torque of friction : 10 (Nm)
Because these value are different on each machine, it is necessary to observe the
output torque on the actual machine for deciding acceleration pattern
The conditions are the same as the previous example.
Motor speed at rapid traverse : 3000 (min
-1
)
Ball screw pitch : 16 (mm)
Inertia : The machine inertia is to be 2.0 times higher
than that of the rotor.
Rotor inertia : 0.0099 (Kgm
2
)
Maximum torque : 100 (Nm) Speed: 0 to 2000 (min
-1
)
Torque at rapid traverse : 79 (Nm) Speed: 3000 (min
-1
)
Minimum torque : 58 (Nm) Speed: 4000 (min
-1
)