HEIDENHAIN TNC 360 User Manual - Manual (Page 200)

9-9 TNC 360
9 Digitizing 3D Surfaces
Fig. 9.5: Digitizing with the CONTOUR LINES cycle
e.g.
e.g.
e.g.
TOUCH
PROBE
X 5 0
Y 0
.
.
9.4 Contour Line Digitizing
GOTO 7
ENT
ENT
ENT
ENT
2 0 0
Y
X
Z
1
Limits of the scanning range
• 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 re-
turned 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 repeat-
ed until the entire range is scanned.
When the entire range has been scanned, the
probe returns to the CLEARANCE HEIGHT.
Setting the digitizing parameters
TCH PROBE: 0 REF. PLANE
Select digitizing cycle 7: CONTOUR LINES.
TCH PROBE: 7 CONTOUR LINES
Confirm your selection.
TIME LIMIT ?
Enter the time limit, for example 200 seconds.
STARTING POINT ?
Enter the coordinates of the starting point (for example, X = 50 mm
and Y = 0), and confirm your entry.