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More Productive Heavy-Duty
Machining
High-strength materials such as titanium
can now be machined more productively.
The Siemens-owned subsidiary Weiss
Spindeltechnologie has developed motor
spindles with integrated gears which, similar
to conventional gear spindles, are capable
of achieving torques of over 3,000 newton
meters. Consequently, improved machine
tool values can be attained even during
heavy-duty machining: motor spindles enable
higher rotational speeds, machining
rates and workpiece accuracy levels than
conventional gear spindles.
Two model types are available. Both are
based on a work spindle, a planetary gearing
system and an steplessly variable electric
drive. In the first version, the planetary
gearing system is situated between the
spindle and motor. As a result, the motor
spindle is slender yet relatively long at 1.6
meters. In the second version, the gearing
system is located between the bearings. The
shaft of the spindle extends through the
hollow shaft. The bearings of the work spindle
are situated in front of and behind the
drive motor, thereby reducing the overall
length by as much as one-third. The spindles
the only factory to not only win the Best Factory/Industrial
Excellence award of the
French management school INSEAD and the
chair of the production management faculty
of the German Technical College for Comhave
already been successfully tested at the
Waldrich Coburg machine tool factory. The
Hessapp company is currently already utilizing
the new high-performance spindles in
a vertical lathe.
More information:
www.weissgmbh.com
Weiss GmbH
A&D Electronics Plant Erlangen Named Factory of the Year 2006
The Siemens
Automation
& Drives (A&D)
Electronics Manufacturing
Plant in Erlangen, Germany
(Gerätewerk GWE) is the 2006 winner of
the “Factory of the Year/Global Excellence
in Operations” award. The jury members of
the management consulting firm A.T. Kearney
and the trade journal “Produktion” based
their decision on the efficiency GWE achieved
as a result of the outstanding mobilization
of its employees. The plant’s success was
attributed to a good management system
in the form of an integrated production
system and an effective program to continuously
improve productivity and the
plant’s cost position. Among experts, the
Factory of the Year/GEO competition is regarded
as one of the most demanding
benchmark competitions for manufacturing
operations.
The GWE is part of the Siemens A&D Motion
Control Systems (MC) division. With a
staff of over 900 employees, the factory produces
CNC controls and drives for machine
tools, crane systems and production machines
in the power range of between 0.7
kilowatts and 1.5 megawatts. To date, it is
Simpler Handling
and Reduced Overall
Length
Highly dynamic, compact and assembly
friendly – these are the basic characteristics
of the new 1FT7 synchronized servo
motors. As a result, they are clearly designed
to meet the technical and economic
requirements of the demanding
motion control applications in today’s machine
tool and production machine manufacturing
operations. The new servo motors
offer a number of additional advantages,
particularly when operated together
with the Sinamics S120 drive system:
• clearly reduced overall design length –
up to 30 percent at comparable torque
• robust and long-lived – sensors are connected
via special coupling and can be exchanged
without parameterization
pany Management, but also the Factory of
the Year/GEO competition.
More information:
www.siemens.com/motioncontrol
• simple installation due to cross-profile
• higher speed control range during use in
field weakening operation
With the overall design length reduced
by up to 30 percent, the new high-performance
servo motor is markedly more compact.
Already in the self-cooled model, an
overload capability of four times the standstill
torque M 0 is available.
While designing the new top model, special
attention was given to continuity with
the 1FT6 motors, which have been wellestablished
in the market for a number of
years: the assembly, connection and characteristic
compatibility is ensured, enabling
a simple direct exchange for a servo motor
of the new generation.
More information:
www.siemens.com/motioncontrol/motors
motion world 1/2007