Siemens SINUMERIK 840D Programming Manual page 66

Hide thumbs Also See for SINUMERIK 840D:
Table of Contents

Advertisement

Drilling Cycles and Drilling Patterns
2
2.1 Drilling cycles
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
• Oriented spindle stop with SPOS (value in
parameter POSS) and conversion of spindle to
axis mode
• Tapping to final drilling depth with G331 and
speed SST
• Dwell time at thread depth (parameter DTB)
• Retraction to the reference plane brought forward
by the safety clearance with G332, spindle speed
SST1 and reversal of direction of rotation
• Retraction to the retraction plane with G0, spindle
mode is reintroduced by reprogramming the
spindle speed active before the cycle was called
and the direction of rotation programmed under
SDAC.
Description of parameters
See Section 2.1.2. (Drilling, Centering – CYCLE81)
for a description of parameters RTP, RFP, SDIS,
DP, DPR
DTB (dwell time)
You program the dwell time in seconds. It is
recommended that the dwell time is omitted for the
tapping of blind holes.
SDAC (direction of rotation after end of cycle)
Under SDAC you program the direction of rotation
after completion of the cycle. For tapping, the
direction is changed automatically by the cycle.
2-66
Z
Z
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide, Cycles (PGZ) - 04.00 Edition
03.96
08.97
SDAC
G0
G331
G332
G4
RTP
RFP+SDIS
RFP
X
DP=RFP-DPR
 Siemens AG 2000 All rights reserved.
2
X

Hide quick links:

Advertisement

Table of Contents
loading

This manual is also suitable for:

Sinumerik 840diSinumerik 810dSinumerik fm-nc

Table of Contents