Undercut (Forms E And F To Din) - Cycle94 - Siemens SINUMERIK 808D ADVANCED Programming And Operating Manual

4.
9.5.4

Undercut (forms E and F to DIN) - CYCLE94

Programming
CYCLE94 (SPD, SPL, FORM, VARI)
Parameters
Parameter Data type
SPD REAL
SPL REAL
FORM CHAR
VARI INT
Function
This cycle can be used to perform undercuts to DIN509 of forms E and F with standard requirements at a finished diameter
of >3 mm.
See the following illustration for undercut Form F and Form E:
Sequence
Position reached prior to cycle start:
The starting position can be any position from which the undercut can be approached without collision.
The cycle creates the following sequence of motions:
● Approach of the starting point determined in the cycle by using G0
● Selection of the cutter radius compensation according to the active tool point direction and traveling along the undercut
contour at the feedrate programmed prior to the cycle call
● Retraction to the starting point with G0 and deselection of the cutter radius compensation with G40
156
Confirm your settings with this softkey. The cycle is then automatically transferred to the
program editor as a separate block.
Description
Starting point along facing axis (enter without sign)
Starting point of the tool compensation in the longitudinal axis (enter without sign)
Definition of the form
Values: E (for form E), F (for form F)
Specification of undercut position
Values:
0: according to tool cutting edge position
1...4: define position
Programming and Operating Manual (Turning)
6FC5398-5DP10-0BA2, 06/2015