
B–63294EN/02
2. MACHINING MENU DESCRIPTIONS
– 370 –
(2) Explanation of input items
X:U–DIRC. DIA.
When hole preparation is not required (when a preparatory hole has already been drilled), enter
the diameter of the hole. If this item is not specified, hole preparation is assumed to be necessary.
R : CUT PT. U/R
– CUT PT. U (U–axis machining)
Specify the U coordinate (in the workpiece coordinate system) of the cutting start point by enter-
ing a radius value. When this item is not specified, an automatically calculated point is used for
machining.
<Automatic calculation>
– CUT PT. U = [Hole diameter/2] – [cutting condition No. 793]
As the hole diameter, the diameter specified for a prepared hole or the maximum nominal
diameter of the tools used for hole preparation is to be used.
– R (Hole preparation)
This item specifies the Z coordinate of a cutting feed start point for hole preparation. This item
is automatically determined when the [F.S. AUTO] soft key is pressed.
Z : CUT PT. Z/Z
– CUT PT. Z (U–axis machining)
Enter the Z coordinate (in the workpiece coordinate system) of the cutting start point. When this
item is not specified, an automatically calculated point is used for machining.
<Automatic calculation>
– CUT PT. Z = [Workpiece surface Z coordinate] – [start point Z coordinate]
– Z (Hole preparation)
This item specifies the Z coordinate of the deepest point to be reached by the tool during cutting
feed for hole preparation. This item is automatically determined when the [F.S. AUTO] soft key
is pressed.
E : DWELL
Specify a dwell time (in seconds) to be observed at the bottom of a prepared hole. The dwell time
is automatically determined when the [F.S. AUTO] soft key is pressed.
For an explanation of other input items, refer to ”(2) Explanation of input items” of ”Outer groove.”
Inner thread figure data
For an explanation of inner thread figure data, refer to ”Outer thread figure data.”