Siemens SINUMERIK 808D Programming And Operating Manual

Cycles
2.5 Turning cycles
Turning Part 2: Programming (Siemens instructions)
Programming and Operating Manual, 05/2012, 6FC5398-5DP10-0BA0
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2.5.6 Thread undercut - CYCLE96
Programming
CYCLE96 (DIATH, SPL, FORM, VARI)
Parameters
Parameter Data type Description
DIATH REAL Nominal diameter of the thread
SPL REAL Starting point of the correction in the longitudinal axis
FORM CHAR Definition of the form
Values: A (for form A), B (for form B), C (for form C), D (for form D)
VARI INT Specification of undercut position
Values:
0: According to tool point direction
1...4: Define position
Function
You can use this cycle to perform thread undercuts to DIN76 for parts with a metrical ISO
thread.
Sequence
Position reached prior to cycle start:
The starting position can be any position from which each thread undercut can be
approached without collision.

Siemens SINUMERIK 808D Specifications

General

Brand	Siemens
Model	SINUMERIK 808D
Category	Control Unit
Language	English