
B–63523EN–1/03
9. SPINDLE SPEED FUNCTION
1113
When the spindle motor is used for positioning, as in the case of spindle
positioning or Cs contour control, the first spindle will allows function
as the positioning spindle. Switching to the positioning mode and
positioning command are possible irrespective of the state of the selection
signal of the first spindle (SWS1). This means that the first spindle cannot
be controlled as a spindle in positioning mode, but the second to fourth
spindles can be controlled as usual.
Polygon turning rotates a tool axis in phase with the spindle. To perform
polygon turning when multi-spindle control issued, select the spindle and
the position coder associated with the spindle.
(First to fourth position coders can be selected.)
During spindle synchronization, polygon turning between spindles or
simplified synchronization control, the second spindle operates in phase
with the first spindle. Multi-spindle control for the first, third, and fourth
spindles can be used during synchronization control, but multi-spindle
control for the second spindle is disabled.
Rigid tapping can be performed by selecting one spindle from the first to
third spindles by means of the spindle selection signals (SWS1 to SWS3).
If the third spindle is configured as an analog spindle, rigid tapping cannot
be performed with the third spindle. Rigid tapping cannot be performed
with the fourth spindle. There are certain restrictions:
D Set the SWS 1 to 3 signals before directing rigid tapping;
D Do not switch the SWS 1 to 3 signals during rigid tapping; and
D Use the appropriate ENB signal (either ENB, ENB2, or ENB3) for the
selected spindle as the ENB signal for the rigid tapping PMC
sequence.
The spindles not used for rigid tapping can be rotated at a speed specified
before rigid tapping starts, or can be stopped.
Refer to 9.4 “Spindle Control for Two-path Lathe”.
[Classification] Input signal
[Function] Controls whether S command specified to the NC is output to the spindle
or not in multi-spindle.
SWS1 1 : Outputs a speed command to the first spindle.
0 : Outputs no speed command to the first spindle.
SWS2 1 : Outputs a speed command to the second spindle.
0 : Outputs no speed command to the second spindle.
D Spindle positioning or
Cs contour control
D Polygon turning
(T series)
D Spindle synchronization,
polygon turning between
spindles, simplified
synchronization control
D Rigid tapping
D Two-path control option
Signal
Spindle Selection Signal
SWS1, SWS2, SWS3,
SWS4 <G027#0, #1, #2>,
<G026#3>