Drive and control solutions for metalforming and ... - Bosch Rexroth

One control strategy throughout your plant
...to in-die transfers...
Rexroth Indramat has the perfect
control and drive solution for in-die
transfers, replacing expensive,
maintenance-prone mechanical cams
and press linkages with servos.
Electronic camming ensures the
highest possible throughput while
insuring safety of the die and press.
A Virtual Master in software
overcomes mechanical constraints on
loss of power or top stop. In these
situations, the Virtual Master, rather
than the press-mounted encoder,
controls the feed, allowing the transfer
stroke to be smoothly completed,
bringing the transfer mechanism into
the correct stopped position without
damaging or losing parts.
Built-in functionality includes:
• Electronic cams are synchronized
to the main press encoder as well
as a virtual master for accuracy
at all speeds
• Customizable cam tables and
programmable limit switch
values are easily downloaded
to the drives
• Synchronized at all press speeds
• Built-in protection features prevent
damage to expensive dies
• Programmable error reaction in the
motion control and drives allows
you to specify the proper drive
action should an error occur
• Virtual master allows synchronizing
cams independently of the
press encoder, allowing easy
setup (manually stroke press)
• Press and motor absolute encoders
remember position even if power
fails, providing a quick restart
• Excellent diagnostics for quick
troubleshooting
Benefits include:
• Improved part handling with
fewer misfeeds
• Higher throughput/productivity
• Select ”softer“ motion for
hard-to-handle parts; aggressive
motion for simpler parts to
minimize wear on system
mechanics
• Avoids die crashing, downtime
and repair costs
• Provides flexibility for production
of a wide range of parts
Optional features include:
• Real master encoder filter —
smooths the operation of the
transfer mechanism, isolating the
master encoder from the shock
and vibration of the press
• Redundant press encoders
provide added safety
• Redundant motor encoders
provide added safety
• Extra capacitance for the drive
provides continuity on loss of
incoming power
• Linear motors can provide direct
drive with high acceleration and
traverse speeds for maximum
performance
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