Please Note While Programming - HEIDENHAIN TNC 320 User's Manual For Cycle Programming

8
Fixed Cycles: Cylindrical Surface
8.4 CYLINDER SURFACE Ridge milling (Cycle 29, DIN/ISO: G129,
software option 1)

Please note while programming:

This cycle performs an inclined 5-axis machining
operation. To run this cycle, the first machine axis
below the machine table must be a rotary axis. In
addition, it must be possible to position the tool
perpendicular to the cylinder surface.
In the first NC block of the contour program, always
program both cylinder surface coordinates.
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. Set the reference point to the center of the
rotary table.
The spindle axis must be perpendicular to the rotary
table axis when the cycle is called. If this is not
the case, the TNC will generate an error message.
Switching of the kinematics may be required.
The set-up clearance must be greater than the tool
radius.
When you use local QL Q parameters in a contour
subprogram you must also assign or calculate these
in the contour subprogram.
In the parameter CfgGeoCycle, displaySpindleErr, on/
off, define whether the TNC should output an error
message (on) or not (off) if spindle rotation is not
active when the cycle is called. The function needs
to be adapted by your machine manufacturer.
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HEIDENHAIN | TNC 320 | User's manual for cycle programming | 9/2016