
B-63874EN-1/02 2.MEASUREMENT CYCLE
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Measurement motion
Measurement motion is described below.
<1> A rapid movement is made from the current position to the point
specified by ("CENTER POINT X" + ("INSIDE DIAMETER"/2
- α -r)) in the X-axis direction and by "CENTER POINT Y" in
the Y-axis direction.
<2> In the Z-axis direction, a rapid movement is made to the
approach point ("HEIGHT OF MEAS. PT." + "APROCH
DISTANCE").
<3> Next, a movement is made in the -Z-axis direction to the point
specified by "HEIGHT OF MEAS. PT." at feedrate fb.
<4> If "ON" is selected for "SPINDLE ORIENTATION", spindle
orientation is performed here.
<5> In the range of (α + γ) from that point, a measurement is made at
feedrate f. (First measurement)
<6> Next, a rapid return movement is made by β, and a measurement
is made at the feedrate specified by "MOVING MEAS. SPEED"
in the range from that position to (β + γ). (Second measurement)
<7> After a rapid return movement is made by ε, a rapid movement is
made to the X coordinate specified by "CENTER POINT X",
then a movement is made in the -X-axis direction by the distance
("INSIDE DIAMETER"/2 - α - r) at feedrate fa.
<8> A similar measurement is made in the -X-axis direction and ±Y-
axis directions.
<9> A return movement is made by "APROCH DISTANCE" in the
Z-axis direction.
The symbols used above have the following meanings:
fa: Value of "FEED-RATE FOR APPROACHING START POINT"
in the measurement condition of the group number specified in
"MEASUREMENT COND."
Rapid traverse rate when bit 2 (RPDF) of parameter No. 12380
is set to 1.
fb: Value of "FEED-RATE FOR APPROACHING START POINT"
in the axis direction in the measurement condition of the group
number specified in "MEASUREMENT COND."
f: Value of “FEED-RATE FOR 1ST MEASUREMENT" in the
measurement condition of the group number specified in
"MEASUREMENT COND."
α: Value of “APPROACH DISTANCE FOR 1ST
MEASUREMENT" in the measurement condition of the group
number specified in "MEASUREMENT COND."