Recess Turning Cycle G869 - HEIDENHAIN CNC PILOT 640 User Manual

DIN/ISO programming | Contour-based turning cycles

Recess turning cycle G869

G869 machines the defined contour area. The reference to the
contour to be machined can be transferred in the cycle parameters,
or the contour can be defined directly after the cycle call.
"Working with contour-based cycles", Page 315
Further information:
The workpiece is machined by alternate recessing and roughing
movements. The machining process requires a minimum of retraction
and infeed movements. The contour to be machined can contain
various valleys. If required, the area to be machined is divided into
several sections.
Parameters:
ID: Auxiliary contour – ID number of the contour to be machined
NS: Starting block no. of contour – beginning of contour section
Beginning of contour section
Reference to a G22/G23-Geo recess
NE: Contour end block no. – end of contour section
NE not programmed: The contour element NS is machined in
the direction of contour definition
NS = NE programmed: The contour element NS is machined
opposite to the direction of contour definition.
P: Maximum infeed
R: Depth compens. for finishing (default: 0)
I: O-size X
K: O-size Z
X: Cutting limit in X (diameter value; default: no cutting limit)
Z: Cutting limit in Z (default: no cutting limit)
A: Start angle (default: opposite to recessing direction)
W: Depart.angle (default: opposite to recessing direction)
Q: Roughing/Finish – procedure (default: 0)
0: Roughing and finishing
1: Only roughing
2: Only finishing
U: Unidir. turning (default: 0)
0: Bidirectional
1: Unidirectional
H: Kind of liber. at end of cycle
0: Back to start point
Axial recess: First Z, then X direction
Radial recess: First X, then Z direction
1: Before finished contour
2: Stops at safety clear.
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
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