Detailed Description
2.3 Configurable gear adaptation
Basic logic functions: Spindles (S1)
58
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
2.3.5
Gear step change at fixed position
Application and advantages
Machine tools increasingly use standardized spindle drives, firstly to save technological dead
time on a gear step change and secondly to gain the cost benefits of using standardized
components.
The Gear step change at fixed position function supports the "directed gear step change" of
load gearboxes that need to be activated in a different way than the NC. The gear step
change can in this case only be performed at a defined spindle position. An oscillation
motion as required by conventional load gearboxes is thus no longer necessary.
Sequence for gear step change at fixed position
Gear step change at fixed position
Machine data configuration:
MD35010 $MA_GEAR_STEP_CHANGE_ENABLE = 2
runs the following sequence:
•
Positioning of the spindle from standstill or movement across the position configured in
machine data:
MD35012 $MA_GEAR_STEP_CHANGE_POSITION
.
If the gear step change is performed out of a movement, then the current direction of
rotation is maintained. The spindle is in positioning mode during the positioning action.
NC/PLC IS:
DB31, ... DBX84.5 (positioning mode)
is output.
If no reference is available:
DB31, ... DBX60.4/5 = 0
or NC/PLC IS:
DB 31, ... DBX17.4/5 (Resynchronize on positioning MS 1/2)
is set, the positioning action is extended by the time it takes to find the zero mark.
•
After reaching the gear step change position configured in machine data:
MD35012$MA_GEAR_STEP_CHANGE_POSITION
the machine waits for the time in machine data:
MD35310 $MA_SPIND_POSIT_DELAY_TIME
before switching to oscillation mode,
and the known gear step change dialog starts.
•
Output of VDI interface signals:
DB31, ... DBX84.6 (Oscillation mode)
DB31, ... DBX82.3 (Change gear)
DB31, ... DBX82.0-82.2 (Set gear step A to C).
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 ...