5 mirror image (cycle 8, din/iso: g28), Effect, Please note while programming – HEIDENHAIN TNC 620 (340 56x-02) Cycle programming User Manual
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Cycles: Coordinate Transformations
1
1
.5 MIRR
OR IMA
G
E (Cy
c
le 8, DIN/ISO: G28)
11.5 MIRROR IMAGE (Cycle 8,
DIN/ISO: G28)
Effect
The TNC can machine the mirror image of a contour in the working 
plane. 
The mirror image cycle becomes effective as soon as it is defined in 
the program. It is also effective in the Positioning with MDI mode of 
operation. The active mirrored axes are shown in the additional status 
display.
If you mirror only one axis, the machining direction of the tool is 
reversed (except in fixed cycles).
If you mirror two axes, the machining direction remains the same.
The result of the mirror image depends on the location of the datum:
If the datum lies on the contour to be mirrored, the element simply 
flips over. 
If the datum lies outside the contour to be mirrored, the element 
also “jumps” to another location. 
Reset
Program the MIRROR IMAGE cycle once again with NO ENT.
Please note while programming:
Y
X
Z
Y
X
Z
If you mirror only one axis, the machining direction is 
reversed for the milling cycles (Cycles 2xx). Exception: 
Cycle 208, in which the direction defined in the cycle 
applies.
