HEIDENHAIN TNC 410 - Manual (Page 200)

187 HEIDENHAIN TNC 410
AXIS-SPECIFIC SCALING (Cycle 26)
Before programming, note the following:
You cannot use different factors to expand or compress
coordinaten axes with positions for circular arcs.
Otherwise you can program each coordinate axis with its
own axis-specific scaling factor.
In addition, you can enter the coordinates of a center for
all scaling factors.
The size of the contour is enlarged or reduced with
reference to the center, and not necessarily (as in Cycle 11
SCALING FACTOR) with reference to the active datum.
Effect
The SCALING FACTOR becomes effective as soon as it is defined in
the program. It also works in the Positioning with MDI mode. The TNC
shows the active scaling factor in the additional status display.
The SCALING FACTOR is also effective in the Positioning with Manual
Data Input mode. The active scaling factor is shown in the additional
status display.
ú Axis and scaling factor: Enter the coordinate axis/axes
as well as the factor(s) involved in enlarging or
reducing. Enter a positive value up to 99.999 999.
ú Center coordinates: Enter the center of the axis-
specific enlargement or reduction.
The coordinate axes are selected with soft keys.
Cancelation
Program the AXIS-SPECIFIC SCALING cycle once again with a
scaling factor of 1 for the same axis.
Example
Axis-specific scaling factors in the working plane
Preset: Quadrangle (see figure at lower right)
Corner 1: X = 20.0 mm Y = 2.5 mm
Corner 2: X = 32.5 mm Y = 15.0 mm
Corner 3: X = 20.0 mm Y = 27.5 mm
Corner 4: X = 7.5 mm Y = 15.0 mm
■ Enlarge X axis by factor 1.4
■ Reduce Y axis by factor 0.6
■ Center at CCX = 15 mm CCY = 20 mm
Resulting NC blocks
CYCL DEF 26.0 axis-spec. scaling
CYCL DEF 26.1 X1.4 Y0.6 CCX+15 CCY+20
8.8 Coor
dinat
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ransf
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mation Cy
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X
Y
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X
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CC
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4 2