
A-79348E
Title
Draw
No.
26/88
page
FANUC Series 30i-MODEL A
Tool center point control
for 5-axis machining
Ed. Date Design Description
Date Jan.16.’04 Design. Apprv.
CAUTION
The option for AI contour control function I or AI
contour control function II is needed in tool center
point control.
And be sure to specify the following parameters:
(1) Parameter LRP (No.1401#1=1)=1:
Linear rapid traverse
(2) Parameter FRP (No.19501#5=1)=1:
Acceleration/deceleration before interpolation
is used for rapid traverse.
(3) Parameter No.1671:
Acceleration before interpolation for rapid
traverse.
(4) Parameter No.1672:
Change time for bell-shaped acceleration
before interpolation for rapid traverse.
(5) Parameter No.1660:
Maximum allowable acceleration rate in
acceleration/deceleration before interpolation
If the above settings are not specified, alarm PS5420
occurs.
- Rotary axis command
If a command is specified during tool center point control that prohibits the
tool center point from moving with respect to the workpiece, the maximum
cutting speed (parameter No.1430) is assumed as the feedrate of the rotary
axis when parameter RFC (No.19696#6) is 0, and the speed specified by F is
assumed when parameter RFC (No.19696#6) is 1.
The rotary axis command cannot be specified during tool center point
control of type 2. Specifying the command with type 2 causes alarm
PS5421.
- The moving distance of the rotary axis is long compared to that of the linear axis
If the moving distance of the rotary axis is long compared to that of the
linear axis, the rotary axis moves faster so that the tool center point moves at
the specified speed, possibly resulting in the tool center point traveling on an
inadequate path.
In such a case, it is possible to exert control to slow down the speed and
ensure that the tool center point travels on the specified path, by setting
parameter SUP (No.19696#7) to 1. When using this control, specify in
parameter No.19745 the extent of deviation of the path at which the speed is
to be slowed down (maximum allowable deviation of the path). When 0 is
specified, the least input increment is regarded as the maximum allowable
deviation of the path.