21
6
Press the [EXIT] key. Use the dial to select [12 ROTARY CON-
TROL], then press the [ENTER] key. In the same way, go to the
[12-1 ROTATE] menu, then use the dial to make the setting for
[180 deg]. Press the [ENTER] key. The workpiece is flipped over
and the surface cut in step 5 comes to face the front of the ma-
chine.
Use the [EXIT] key to go back to the coordinate-value screen.
7
Move the tool to the side of the workpiece facing the front of the
machine, then lower the tool until it overlaps with the surface you
cut in step 5 by about 1 mm (1/16 in.).
Use the [ ] key and the dial to gradually cut into the workpiece.
Watch the Y-axis coordinate value on the display, and perform cut-
ting-in until you reach a value that is the negative of the value you
noted down in step 4. For example, if in step 4 you performed
cutting-in to a value of Y = 3,860, then here you need to perform
cutting-in to Y = -3,860.
8
Press the [JOG] key to line up the [*] with the X axis. Turn the dial
to cut the same width you cut in step 5.
When you have finished, use the [+Z] key to raise the tool, then
press the [SPINDLE] key to stop the spindle.
9
Examine the difference in height between the two cuttings. Whether
the offset value should be positive or negative is determined by
whether the upper cut surface (the surface cut second) is displace
toward the front or the back of the machine. Also, as a general
guide, the offset value should be one-half the amount of differ-
ence in heights.
When the upper side is displaced toward the front: Positive offset value
When the upper side is displaced toward the back: Negative offset value
Offset value = difference in heights / 2
For example, is the upper side is displaced toward the back and
the difference in heights is 0.2 mm, the estimated offset value is
-100
µ
m.
10
Press the [EXIT] key. Use the dial to select [12 ROTARY CON-
TROL], then press the [ENTER] key. In the same way, go to the
[12-5 CENTER-Y OFFSET] menu, then use the dial to set the
offset value. Press the [ENTER] key.
11
Repeat steps 3 through 10 as required to fine-tune the offset value.
When the upper side is displaced toward the front:
Make the offset value larger (more of a positive value).
When the upper side is displaced toward the back:
Make the offset value smaller (more of a negative value).
12-1 ROTATE
180 deg
Part 5 Offset Adjustment for the Y-axis and Z-axis Origin Points
X 4960 *Y -3860
Z -50 ---------
12-5 CENTER-Y OFFSET
< -100 um>
Enter a positive
offset value.
Enter a negative
offset value.
Difference
Difference
