Please Note While Programming - HEIDENHAIN TNC 620 User Manual

Fixed Cycles: Drilling | BORE MILLING (Cycle 208, software option 19)

Please note while programming:

Program a positioning block for the starting point (hole
center) in the working plane with radius compensation
R0.
The algebraic sign for the cycle parameter DEPTH
determines the working direction. If you program
DEPTH=0, the cycle will not be executed.
If you have entered the bore hole diameter to be the
same as the tool diameter, the TNC will bore directly to
the entered depth without any helical interpolation.
An active mirror function
milling defined in the cycle.
Note that if the infeed distance is too large, the tool or
the workpiece may be damaged.
To prevent the infeeds from being too large, enter the
maximum plunge angle of the tool in the ANGLE column
of the tool table. The TNC then automatically calculates
the max. infeed permitted and changes your entered
value accordingly.
Danger of collision!
If you enter a positive depth with a cycle, the TNC reverses
calculation of the pre-positioning. This means that the tool
moves at rapid traverse in the tool axis to set-up clearance
the workpiece surface!
below
Enter depth as negative
Enter in machine parameter displayDepthErr (No. 201003)
whether the TNC should output an error message (on) or not
(off) if a positive depth is entered
HEIDENHAIN | TNC 620 | User's manual for cycle programming | 10/2017
does not influence the type of
NOTICE
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