Heidenhain TNC 620 (34056x-04) Cycle programming Uživatelský manuál Strana 123

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OUTSIDE THREAD MILLING (Cycle 267, DIN/ISO: G267, software
option 19)
4.10
4
TNC 620 | User's Manual Cycle Programming | 5/2013
123
Please note while programming:
Program a positioning block for the starting point
(stud center) in the working plane with radius
compensation R0.
The offset required before countersinking at the front
should be determined ahead of time. You must enter
the value from the center of the stud to the center of
the tool (uncorrected value).
The algebraic sign of the cycle parameters depth
of thread or sinking depth at front determines the
working direction. The working direction is defined in
the following sequence:
1. Thread depth
2. Depth at front
If you program a depth parameter to be 0, the TNC
does not execute that step.
The algebraic sign for the cycle parameter "thread
depth" determines the working direction.
Danger of collision!
Use the machine parameter displayDepthErr to
define whether, if a positive depth is entered, the
TNC should output an error message (on) or not (off).
Keep in mind that the TNC reverses the calculation
for pre-positioning when a positive depth is
entered. This means that the tool moves at rapid
traverse in the tool axis to set-up clearance below
the workpiece surface!
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