Siemens SINUMERIK 840D Programming Manual page 70

Drilling Cycles and Drilling Patterns
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2.1 Drilling cycles
Sequence of operations
Tapping with compensating chuck without
encoder (ENC=1)
Position reached prior to cycle start:
The drilling position is the position in the two axes of
the selected plane.
The cycle implements the following motion
sequence:
• Approach of the reference plane brought forward
by the safety clearance with G0
• Tapping to the final drilling depth with G63
• Dwell time at thread depth (parameter DTB)
• Retraction to the reference plane brought forward
by the safety clearance with G63
• Retraction to retraction plane with G0
Tapping with compensating chuck with encoder
(ENC=0)
Position reached prior to cycle start:
The drilling position is the position in the two axes of
the selected plane.
The cycle implements the following motion
sequence:
• Approach of the reference plane brought forward
by the safety clearance with G0
• Tapping to the final drilling depth with G33
• Dwell time at thread depth (parameter DTB)
• Retraction to the reference plane brought forward
by the safety clearance with G33
• Retraction to retraction plane with G0
2-70
Z
Z
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide, Cycles (PGZ) - 04.00 Edition
03.96
SDAC
G0
G63
G4
RTP
RFP+SDIS
RFP
X
DP=RFP-DPR
SDR
SDAC
G0
G33
G4
RTP
RFP+SDIS
RFP
X
DP=RFP-DPR
SDR
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