Any size, any shape
According to StarragHeckert, today’s aerospace companies are
faced with the demands of machining exotic materials with
hard-to-machine characteristics such as titanium and Inconel.
These manufacturing challenges are further compounded
when precision bores and complex dimensional shapes require
machined tolerances in the single micron range.
StarragHeckert has launched its SPC (Super Precision
Centre) 7120 and 7140 SIP horizontal machining centres,
specifically built to meet these demanding applications. The
company claims its proven high precision machine design and
best in class geometry works in tandem with the machine’s
high productivity features delivering substantial benefits. The
results, it says, are accurate parts that can be produced in
volume.
The SPC 7120 and 7140
SIP horizontal machining
centres feature a compact
design, productive tool
and workpiece handling
and are suitable for
a broad spectrum of
production applications.
www.starragheckert.com
Slot milling halves
Don’t stand for fatigue
cycle time
Aerospace and defence industry Horn claims that the application of its Type 636 slot milling
employees who stand at work cutter has set new standards of accuracy, tool life, process
experience significant physical reliability and costs for milling recesses for planetary gears at
stress and fatigue as a result. Sitec Aerospace, Germany.
Typical symptoms are swollen Milling cycle time has reduced by half, and part to part
or painful feet, stiffness in dimensional consistency has significantly improved as has
the joints, discomfort in the as-machined surface finish and tool life.
shoulders and neck and lower The Type Series 636 is a circular milling cutter with six
back pain. This undermines cutting edges. Slots in the range 1.5 to 3mm width and up to
motivation and productivity 12mm depth can be milled with standard tools. They are used
and can increase absenteeism. with the vibration damping solid carbide shank M 332, and
Fortunately, this is one health located by a single bolt onto the patented, asymmetric insert
and safety issue that can be seat, which is said to guarantee precise and secure location.
addressed easily and cost- “Once set-up, no corrections are required as the cutting
effectively. Properly specified anti-fatigue matting can reduce geometry is correct and our expectations, with regard to chip
standing fatigue by as much as 50%. flow and tolerances, are completely fulfilled,” explains Sitec
Wearwell offers a range of anti-fatigue matting suitable for Aerospace’s Helmut Bachmair. “The running time reduction
use in these industries. Included are products suitable for ISO from the original 11 minutes to almost half is also impressive.
Class 5 clean rooms, static and biologically sensitive areas, As the selected milling cutter is not a special tool but a
through to those designed to withstand oils in machining areas standard tool, there are also benefits for the costs and delivery
or heavy-wheeled traffic in assembly operations. times.”
www.wearwell-europe.co.uk www.phorn.de
AEROSPACEMANUFACTURING | jANUARy 2010 35
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