Siemens SINUMERIK 840D Programming Manual page 85

2
03.96
10.00
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 distance with G0
• Tapping to the final drilling depth with G63
• Retraction to the reference plane brought forward
by the safety distance with G63
• Retraction to retraction plane with G0
The spindle override must be set to 100%.
Tapping with compensating chuck without
encoder 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 distance 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 distance with G33
• Retraction to retraction plane with G0
© Siemens AG, 2002. All rights reserved
SINUMERIK 840D/840Di/810D Programming Guide Cycles (PGZ) – 11.02 Edition
Drilling Cycles and Drilling Patterns
2.1 Drilling cycles
SDAC
Z
X
SDAC
Z
X
2
G0
G63
RTP
RFP+SDIS
RFP
DP=RFP-DPR
SDR
G0
G33
G4
RTP
RFP+SDIS
RFP
DP=RFP-DPR
SDR
2-85