
11.SPINDLE SPEED FUNCTION B-63943EN-1/02
- 1360 -
CAUTION
2 When M-type gear selection is used for the
machining center system, 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 Section “SPINDLE SPEED CONTROL” as necessary.
- Specification of machining center system/lathe system
The differences in the specifications for rigid tapping for the
machining center system and lathe system 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).
A reverse tapping cycle, like that supported by machining center
system, is not available.
For a multi path lathe, rigid tapping can be performed using a
combination of the spindle and drilling axis selected in each path.
Rigid tapping using a mixture of paths is not allowed. For example,
rigid tapping in combination of a drilling axis of tool post 1 and the
spindle of tool post 2, by issuing a tapping command to tool post 1, is
not supported.