
B-63943EN-1/02 11.SPINDLE SPEED FUNCTION
- 1445 -
- Parameters used according to the number of gear stages
(No.5221 to No.5224, No.5231 to No.5234, No.5241 to
No.5244, No.5261 to No.5264, No.5271 to No.5274,
No.5281 to No.5284, No.5286 to No.5289, No.5291 to
No.5294, No.5321 to No.5324, No.5386 to No.5389, etc.)
- M series: Up to three stages
T series: Up to four stages
CAUTION
1 The description given in this section covers up to the
fourth axis.
2 When M-type gear selection is used for the M
series, the maximum spindle speed for rigid tapping
(specified with parameters No. 5241 to 5243) must
also be set for parameter No. 5243 regardless of the
number of gear steps. (For a system having a single
gear step, set the same value as that of parameter
No. 5241 for parameter No. 5243. For a system
having two gear steps, set the same value as that of
parameter No. 5242 for parameter No. 5243.)
The descriptions given in this section (such as spindle gear switching
and M-type/T-type) are based on the explanation given in Section
“SPINDLE SPEED CONTROL.” Refer to “SPINDLE SPEED
CONTROL” as necessary.
Explanation
- Specification of machining center system/lathe system
The differences in the specifications for rigid tapping for the M series
and T series are described below.
M
Rigid tapping of machining center system
The tapping cycle G84 and the reverse tapping cycle G74 can be used
to specify machining center system rigid tapping.
A drilling axis can be arbitrarily selected from the basic axes X, Y, Z,
as well as axes parallel to the basic axes, by setting the corresponding
parameters accordingly (bit 0 (FXY) of parameter No. 5101).
The spindle operations of G84 and G74 are reversed with respect to
each other.
T
Rigid tapping of lathe system
The face tapping cycle G84 and the side tapping cycle G88 can be
used to specify lathe system rigid tapping.
Depending on the rigid tapping command, rigid tapping can be
performed along the Z-axis (when G84 is used) or the X-axis (when
G88 is used).