HEIDENHAIN TNC 620 (340 56x-03) Cycle programming - Manual (Page 426)

426 Touch Probe Cycles: Automatic Kinematics Measurement
1
8
.4 MEA
S
URE KINEMA
TICS (Cy
c
le
451, DIN/ISO: G451; Option)
Positioning direction
The positioning direction of the rotary axis to be measured is
determined from the start angle and the end angle that you define in
the cycle. A reference measurement is automatically performed at 0°.
Specify the start and end angles to ensure that the same position is
not measured twice. A duplicated point measurement (e.g. measuring
positions +90° and –270°) is not advisable, but it does not cause an
error message.
„ Example: Start angle = +90°, end angle = –90°
„ Start angle = +90°
„ End angle = –90°
„ No. of measuring points = 4
„ Stepping angle resulting from the calculation = (–90 – +90) / (4 –
1) = –60°
„ Measuring point 1= +90°
„ Measuring point 2= +30°
„ Measuring point 3= –30°
„ Measuring point 4= –90°
„ Example: start angle = +90°, end angle = +270°
„ Start angle = +90°
„ End angle = +270°
„ No. of measuring points = 4
„ Stepping angle resulting from the calculation = (+270 – +90) /
(4 – 1) = +60°
„ Measuring point 1= +90°
„ Measuring point 2= +150°
„ Measuring point 3= +210°
„ Measuring point 4= +270°