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ICP programming | Contour elements – turning contour
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HEIDENHAIN | MANUALplus 620 | User's Manual | 12/2017
Undercut DIN 76
Programming a thread undercut DIN 76:
Select the form elements
Select
Undercut DIN 76
Enter the undercut parameters
Parameters:
FP : Thread pitch (default: standard table)
I : Undercut depth (default: standard table)
K
:
Undercut length
(default: standard table)
R : Undercut radius (default: standard table)
W
:
Undercut angle
(default: standard table)
U , F , D , DF :
Further information: "Machining attributes", Page 418
ICP generates a G25 in smart.Turn mode of operation.
Parameters that are not defined are automatically calculated by the
control from the standard table:
The Thread pitch FP is calculated from the diameter
The parameters I , K , W and R are calculated from the Thread
pitch FP
Further information:
"DIN 76 – undercut parameters", Page 685
If you are programming an internal thread, it is
advisable to preset the
Thread pitch FP , since the
diameter of the longitudinal element is not the thread
diameter. If you have the control calculate the thread
pitch automatically, slight deviations may occur.
Undercuts can be programmed only between two
linear elements. One of the two linear elements
must be parallel to the X axis.