Please Note While Programming - HEIDENHAIN TNC 620 User Manual

Fixed Cycles: Cylindrical Surface | 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 preset 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.
HEIDENHAIN | TNC 620 | User's manual for cycle programming | 10/2017
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