Positioning Direction - HEIDENHAIN TNC 640 User Manual

19
Touch Probe Cycles: Automatic Kinematics Measurement | MEASURE KINEMATICS (Cycle 451, DIN/ISO:

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°
688
HEIDENHAIN | User's manual for cycle programming | 10/2017
G451, option)