Detailed description
2.1 Path feedrate F
Basic logic functions: Feeds (V1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
29
Smoothed actual values
If lowresolution encoders are being used, smoothed actual values can be applied for
constant coupled path and axis motions.
Machine data:
MD34990 ENC_ACTVAL_SMOOTH_TIME
can be used to change the time constant for more effectively smoothed actual values for:
•
Thread cutting with feedrate for
G33
,
G34
,
G35
•
Revolutional feedrate for
G95
,
G96
,
G97
,
FRAPON
•
Display of actual positions and actual speed/velocity
The larger the time constant, the better the smoothing of the actual values and the longer the
overtravel.
2.1.5
Feedrate for G331/G332, rigid tapping
Application
G331
(tapping) and
G332
(tapping retraction) can be used to tap a thread without a
compensating chuck (rigid tapping) if the spindle is technically capable of operating in
position control mode.
Speed S, feedrate F, thread lead
A revolutional feedrate [mm/revolution] is used for
G331an
d
G332
. The revolutional feedrate
is defined by programming the thread lead increase [mm/revolution].
The speed of the axes for the thread length is calculated from the programmed spindle
speed
S
and the thread lead.
Feedrate
F
[mm/min] = speed
S
[rev/min] * thread lead [mm/rev]
Note
For further information about programming
G63
/
G331
/
G332
, please see:
References:
/PG/ Programming Guide, Fundamentals
/PAZ/ Programming Guide, Cycles
Inhibiting stop events for G331/G332
During tapping, a stop can be prevented if the block contains a path movement or a
G4
.
For this purpose, bit 0 must be set to 0 in machine data:
MD11550 $MN_STOP_MODE_MASK.
The stop, which was activated previously, is possible again after
G331/G332
has been
executed.
Summary of Contents for SINUMERIK 840D sl
Page 282: ...Index Basic logic functions Acceleration B2 64 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 388: ...Basic logic functions Travel to fixed stop F1 Function Manual 11 2006 6FC5397 0BP10 2BA0 52 ...
Page 962: ...Index Basic logic functions Emergency Stop N2 20 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1704: ...Constraints Basic logic functions Spindles S1 94 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1716: ...Index Basic logic functions Spindles S1 106 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1996: ...Index Basic logic functions Tool Offset W1 208 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2150: ...Table of contents Basic logic functions Appendix 4 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2184: ...Glossary Basic logic functions Appendix 38 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...