User's Manual TNC 360 (from 259 900-11) - heidenhain

9 Digitizing 3D Surfaces
9.4 Contour Line Digitizing
Limits of the scanning range
TNC 360
• In the touch probe axis:
The defined range must be lower than the highest point of the 3D
model by at least the radius of the probe tip.
• In the plane perpendicular to the touch probe:
The defined range must be larger than the 3D model by at least the
radius of the probe.
The probe starts scanning in the direction that was
entered as the STARTING PROBE AXIS AND
DIRECTION. The scanned positions are digitized at
intervals equal to or less than the MAX. PROBE
POINT interval.
When the probe has orbited the model and returned
to the first probe point, it then moves in Z
direction by the programmed LINE SPACING:
• Positive LINE SPACING:
offset in positive Z direction
• Negative LINE SPACING:
offset in negative Z direction
The probe must return to the coordinates of the
first digitized position to within one-quarter of the
programmed point spacing. The process is repeated
until the entire range is scanned.
When the entire range has been scanned, the
probe returns to the CLEARANCE HEIGHT.
Setting the digitizing parameters
TOUCH
PROBE
TCH PROBE: 0 REF. PLANE
e.g.
GOTO
7 ENT
TCH PROBE: 7 CONTOUR LINES
ENT
TIME LIMIT ?
2 0 0
ENT
STARTING POINT ?
X e.g. 5 0
Y e.g. 0
ENT
.
.
Y
Z
Fig. 9.5: Digitizing with the CONTOUR LINES cycle
Select digitizing cycle 7: CONTOUR LINES.
Confirm your selection.
Enter the time limit, for example 200 seconds.
Enter the coordinates of the starting point (for example, X = 50 mm
and Y = 0), and confirm your entry.
1
X
9-9