Siemens SINUMERIK 808D ADVANCED Programming And Operating Manual page 132

● Traversing to the first drilling depth with G1, the feedrate for which is derived from the feedrate defined with the program
call which is subject to parameter FRF (feedrate factor)
● Dwell time at final drilling depth (parameter DTB)
● Retraction to the reference plane brought forward by the safety clearance for swarf removal by using G0
● Dwell time at the starting point (parameter DTS)
● Approach of the drilling depth last reached, reduced by anticipation distance by using G0
● Traversing to the next drilling depth with G1 (sequence of motions is continued until the final drilling depth is reached)
● Retraction to the retraction plane with G0
See the following illustration for parameters for CYCLE83:
Deep-hole drilling with chip breakage (VARI=0)
● Approach of the reference plane brought forward by the safety clearance by using G0
● Traversing to the first drilling depth with G1, the feedrate for which is derived from the feedrate defined with the program
call which is subject to parameter FRF (feedrate factor)
● Dwell time at final drilling depth (parameter DTB)
● Retraction by 1 mm from the current drilling depth with G1 and the feedrate programmed in the calling program (for chip
breaking)
● Traversing to the next drilling depth with G1 and the programmed feedrate (sequence of motions is continued until the
final drilling depth is reached)
● Retraction to the retraction plane with G0
Explanation of the parameters
For the parameters RTP, RFP, SDIS, DP, DPR, refer to Section "Drilling, centering - CYCLE81 (Page 126)".
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Programming and Operating Manual (Milling)
6FC5398-4DP10-0BA1, 01/2014