Boring 5 - Cycle89 - Siemens SINUMERIK 840D Programming Manual

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2
2.1.11 Boring 5 – CYCLE89
Programming
CYCLE89 (RTP, RFP, SDIS, DP, DPR, DTB)
Parameters
RTP
real
RFP
real
SDIS
real
DP
real
DPR
real
DTB
real
Function
The tool drills at the programmed spindle speed and
feedrate to the programmed final drilling depth. Once
the final drilling depth has been reached a dwell time
can be programmed.
Sequence of operations
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
• Traverse to final drilling depth with G1 and the
feedrate programmed before the program call
• Dwell time at final drilling depth
• Retraction to the reference plane brought forward
by the safety clearance with G1 and the same
feedrate value
• Retraction to retraction plane with G0
 Siemens AG 2000 All rights reserved.
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide, Cycles (PGZ) - 04.00 Edition
Retraction plane (absolute)
Reference plane (absolute)
Safety clearance (enter without sign)
Final drilling depth (absolute)
Final drilling depth relative to reference plane (enter without sign)
Dwell time at final drilling depth (chip breaking)
Drilling Cycles and Drilling Patterns
2.1 Drilling cycles
Z
2
X
2-87