Entering Pattern Def; Using Pattern Def - HEIDENHAIN TNC 640 User Manual

2

Entering PATTERN DEF

Mode of operation: Press the Programming key
Press the SPEC FCT key to select the special
functions
Select the functions for contour and point
machining
Press the PATTERN DEF soft key
Select the desired machining pattern, e.g. press
the "single row" soft key
Enter the required definitions, and confirm each
entry with the ENT key

Using PATTERN DEF

As soon as you have entered a pattern definition, you can call it
with the CYCL CALL PAT function.
Further information:
The TNC then performs the most recently defined machining cycle
on the machining pattern you defined.
A machining pattern remains active until you define a
new one, or select a point table with the SEL PATTERN
function.
The TNC retracts the tool to the clearance height
between the starting points. Depending on which is
greater, the TNC uses either the spindle axis coordinate
from the cycle call or the value from cycle parameter
Q204 as the clearance height.
Before CYCL CALL PAT you can use the function
GLOBAL DEF 125 (located in SPEC FCT/program
defaults) with Q352=1. Then the TNC always retracts
the tool between the holes to the 2nd set-up clearance
that was defined in the cycle.
68
"Calling a cycle", page 60
Using Fixed Cycles | PATTERN DEF pattern definition
HEIDENHAIN | User's manual for cycle programming | 10/2017