Everything under Control with the Pressure Adjustment System for
Clamping Functions in Machine Tools
Function Enable on Electrical command value speci-
fied from the computer to themonitoring and control
electronics
Adjustment of the pressure-reduction valve by the DC
motoractuator due to the command value
Simultaneous adjustment of theswitching point
Enable off Continously monitoring of the
pressure within the specified accuracy window and
acknow-ledgement to the machine control
Features Analog command value specified
using current or voltage Automatically maintains clam-
ping pressure if electrical powersupply fails (self-locking
actuator)
Integrated pressure switch function with simultaneous
switchpoint adjustments due to clamping pressure adjustment
Adjustable monitoring limits Enable function as safeguard
against unintentional adjustment Actuator with absolute
positio-
ning (no reference adjustmentnecessary)
No energy consumption in adjusted state
Internal monitoring and diagnosisfunctions
Application example:The clamping pressure on aworkpiece in the
lathes canchange even during the ma-chining process. Therefore,
asystem is required that can adjust the clamping pressureand check
it using a sensor.
Suitable for: Clamping pressure adjust-
ment via machine control Clamping processes with multi-
ple pressure adjustment cycles Pressure adjustment during
machining process Pressure adjustment while
moving the clamping compo-nent
Maintaining clamping pres-sure in emergencies
Benefits: Flexible clamping pressure
adjustment Reduced cycle times Shorter changeover time Increased
safety
Pressure command value
Pressure within permitted parameters
Enable
Actual pressure value
Controlelectronics
Monitoringelectronics Position feedback (abs
DC motor actuation
3-way proportional pressure reducing valve with motor adjustment
and pressure sensor
Module amplifier with monitoring and control electronics
Machine control Module amplifier
Ma b
TA B
A BP T
P T
P
P
A B T
P
M
solute)
Pressure reducing valvewith sandwich plate anddirectional
valve
Hydraulic power unit
Sandwich plate with shuttle valve andpressure sensor
Stroke control Rotary transmission Clamping cylinder Clamping
chuck
IndustrialHydraulics
Electric Drives and Controls
LinearMotion andAssemblyTechnologies
Pneumatics
ServiceAutomation
Mobile Hydraulics
The Drive & Control CompanyBosch Rexroth offers an unique
andcomprehensive range of products andservices across technologies
from asingle source in its six fields of tech-nology and service
areas.
Intelligent hydraulics in new dimensionsAt Rexroth you can
select from theworlds largest standard productrange in the field of
hydraulics, appli-cation-specific and customized spe-cial system
solutions of high quality.With advanced micro-electronicsRexroth
has made hydraulics evenmore powerful. Benefit from our
ap-plication specialists expertise from engineering to the
hand-over ofturnkey systems. Thanks to the useof hydraulic drive
and control tech-nology from Rexroth you will be morecompetitive
than ever.
Rely on service acrosstechnologiesRexroth integrates all
services for theentire product spectrum in the fieldof factory and
industrial automationinto a single organization: from imme-diate
support, spare parts service, fieldand repair service,
retrofit/modern-ization through to training.
