HEIDENHAIN TNC 407 (280 580) User Manual - Manual (Page 262)

8-55
8 Cycles
TNC 407/TNC 415 B/TNC 425
Y
X
10 20 30 40 50
10
20
CC
1
2
3
4
1´
2'
3'
4'
Y
X
10 20 30 40 50
10
20
CC
3
1
2 4
4'
3'
2'
1'
8.5 Coordinate Transformation Cycles
AXIS-SPECIFIC SCALING (Cycle 26)
Application
Each coordinate axis can be programmed with its
own axis-specific scaling factor. In addition, the
coordinates of a center can be programmed 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.
Activation
The cycle becomes effective immediately upon
definition in part programming.
Input data
• AXIS AND SCALING FACTOR:
Coordinate axis/axes as well as factor(s) involved
in enlarging or reducing the size of a contour by
axis-specific scaling. The factor is entered as a
positive value of up to 99.999 999
• CENTER COORDINATES:
Center of the axis-specific enlarging or reducing
cycle
Coordinate axes are selected using the soft keys.
Cancellation
The scaling factor is cancelled by entering factor 1
for the same axis.
Coordinate axes sharing coordinates for arcs must be enlarged or reduced by the same scaling factor.
Example:
Axis-specific scaling factors in the machining plane
Preset: Quadrangle (see Fig. 8.53)
Corner 1: X = 20 mm Y = 2.5mm
Corner 2: X = 32.5mm Y = 15 mm
Corner 3: X = 20 mm Y = 27.5mm
Corner 4: X = 7.5mm Y = 15 mm
• Enlarge X axis by factor 1.4
• Reduce Y axis by factor 0.6
• Center at CCX = 15 mm CCY = 20 mm
NC blocks:
CYCL DEF 26.0 AXIS-SPEC. SCALING
CYCL DEF 26.1 X1.4 Y0.6 CCX+15 CCY+20
Fig. 8.53 Axis-specific scaling factor, center coordinates in the
symmetry center of the contour
Fig. 8.54 Axis-specific scaling factor, center coordinates determined
arbitrarily