Siemens SINUMERIK 808D User Manual page 167

Pa rameter D a ta type
SDAC INT
MPIT REAL
PIT REAL
POSS REAL
SST REAL
SST1 REAL
AXN INT
PSYS INT
PSYS INT
VARI INT
DAM REAL
VRT REAL
The definition of the 1st, 2nd, and 3rd axes depends upon the current plane selected.
1)
Fu n ction
The tool drills at the programmed spindle speed and feedrate to the entered final thread depth.
CYCLE84 can be used to make tapped holes without compensating chuck. For tapping with compensating chuck, a
separate cycle CYCLE840 is provided.
N o te
CYCLE84 can be used if the spindle to be used for the boring operation is technically able to be operated in the position-
controlled spindle operation.
Se quence
Po sition reached prior to cycle start:
The drilling position is the position in the two axes of the selected plane.
Th e cycle creates the following sequence of motions:
● Approaching the position of safety distance relative to the reference plane with G0
● Oriented spindle stop (value in the parameter POSS) and switching the spindle to axis mode
● Tapping to final drilling depth and speed SST
● Dwell time at thread depth (parameter DTB)
● Retraction to the reference plane brought forward by the safety clearance, speed SST1 and direction reversal
● Retraction to the retraction plane with G0; spindle mode is reinitiated by reprogramming the spindle speed active before
the cycle was called and the direction of rotation programmed under SDAC
Programming and Operating Manual (Milling)
6FC5398-4DP10-0BA6, 09/2017
D e scription
Direction of rotation after end of cycle
Values: 3, 4 or 5 (for M3, M4 or M5)
Thread lead as a thread size (signed):
Range of values 3 (for M3) to 48 (for M48); the sign determines the direction of rotation in
the thread
Thread lead as a value (signed)
Range of values: 0.001 mm to 2000.000 mm; the sign determines the direction of rotation in
the thread
Spindle position for oriented spindle stop in the cycle (in degrees)
Speed for tapping
Speed for retraction
Tool axis (values : 1 = 1st axis of the current plane; 2 = 2nd axis of the current plane; 3 =
1)
3rd axis of the current plane)
Internal parameter; only the default value 0 is possible
Internal parameter; only the default value 0 is possible
Machining type (values: 0 = Tapping in one pass; 1 = Deep-hole tapping with chip breakage;
2 = Deep-hole tapping with chip removal)
Incremental drilling depth
value range: 0 <= Max. value
Variable return path with chip breakage
value range: 0 <= Max. value
167