HEIDENHAIN TNC 640 (34059x-01) ISO programming - Manual (Page 50)

50 First Steps with the TNC 640
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piece Set
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p Aligning the workpiece with a 3-D touch probe
system
U Insert the 3-D touch probe: In the Manual Data Input (MDI) operating
mode, run a TOOL CALL block containing the tool axis, and then return
to the Manual Operation mode (in MDI mode you can run an
individual NC block independently of the others)
U Select the probing functions: The TNC displays the
available functions in the soft-key row
U Measure the basic rotation: The TNC displays the
basic rotation menu. To identify the basic rotation,
probe two points on a straight surface of the
workpiece
U Use the axis-direction keys to pre-position the touch
probe to a position near the first contact point
U Select the probing direction via soft key
U Press NC start: The touch probe moves in the defined
direction until it contacts the workpiece and then
automatically returns to its starting point
U Use the axis-direction keys to pre-position the touch
probe to a position near the second contact point
U Press NC start: The touch probe moves in the defined
direction until it contacts the workpiece and then
automatically returns to its starting point
U Then the TNC shows the measured basic rotation
U Press SET BASIC ROTATION soft key to select the
displayed value as the active rotation. Press the END
soft key to exit the menu
Further information on this topic
„ MDI operating mode: See "Programming and Executing Simple
Machining Operations" on page 404
„ Workpiece alignment: See "Compensating Workpiece Misalignment
with a 3-D Touch Probe" on page 387