8 sl c y cles – HEIDENHAIN iTNC 530 (340 49x-04) User Manual
Page 467

HEIDENHAIN iTNC 530
467
8.8 SL c
y
cles
Before programming, note the following
In the first NC block of the contour program, always
program both cylinder surface coordinates.
The memory capacity for programming an SL cycle is
limited. You can program up to 8192 contour elements in
one SL cycle.
The algebraic sign for the cycle parameter DEPTH
determines the working direction. If you program
DEPTH = 0, the cycle will not be executed.
This cycle requires a center-cut end mill (ISO 1641).
The cylinder must be set up centered on the rotary table.
The tool axis must be perpendicular to the rotary table. If
this is not the case, the TNC will generate an error
message.
This cycle can also be used in a tilted working plane.
The TNC checks whether the compensated and non-
compensated tool paths lie within the display range of the
rotary axis, which is defined in MP810.x. If the error
message “Contour programming error” is output, set
MP810.x = 0.
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