
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" + ("OUTSIDE
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> In the -Z-axis direction, a movement is made to the position
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), 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> Next, a rapid return movement is made by ε, and a rapid return
movement is made in the Z-axis direction to the approach point
("HEIGHT OF MEAS. PT." + "APROCH DISTANCE").
<8> A rapid movement is made to "CENTER POINT X", then a
movement is made in the -X-axis direction by the distance
("OUTSIDE DIAMETER"/2 + α + r) at feedrate fa.
<9> A similar measurement is made in the -X-axis direction and ±Y-
axis directions.
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."