Siemens SINUMERIK 808D User Manual page 168

Programming and operating manual (milling)
Hide thumbs Also See for SINUMERIK 808D:
Table of Contents

Advertisement

Explanation of the parameters
For more information about the parameters RTP, RFP, SDIS, DP, DPR, see Section "Drilling, centering - CYCLE81
(Page 157)".
D TB (dwell time)
The dwell time must be programmed in seconds. When tapping blind holes, it is recommended that you omit the dwell time.
SD AC (direction of rotation after end of cycle)
Under SDAC, the direction of rotation after end of cycle is programmed.
For tapping, the direction is changed automatically by the cycle.
MPIT and PIT (thread lead as a thread size and as a value)
The value for the thread lead can be defined either as the thread size (for metric threads between M3 and M48 only) or as a
value (distance from one thread turn to the next as a numerical value). Any parameters not required are omitted in the call or
assigned the value zero.
RH or LH threads are defined by the sign of the lead parameters:
● Positive value → right (same as M3)
● Negative value → left (same as M4)
If the two lead parameters have conflicting values, alarm 61001 "Thread lead wrong" is generated by the cycle and cycle
execution is aborted.
POSS (spindle position)
Before tapping, the spindle is stopped with orientation in the cycle by using the command SPOS and switched to position
control.
The spindle position for this spindle stop is programmed under POSS.
SST (speed)
Parameter SST contains the spindle speed for the tapping block with G331.
SST1 (retraction speed)
The speed for retraction from the tapped hole is programmed under SST1.
If this parameter is assigned the value zero, retraction is carried out at the speed programmed under SST.
AXN (tool axis)
The identifiers have the following meanings:
AXN=1
1st axis of the current plane
AXN=2
2nd axis of the current plane
AXN=3
3rd axis of the current plane
168
Programming and Operating Manual (Milling)
6FC5398-4DP10-0BA6, 09/2017

Advertisement

Table of Contents
loading

Table of Contents