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Heason Moves Forward with TwinSpin
Date: 10 July 2006
Heason Technologies takes on the TwinSpinŽ range of precision "bearing reducer" gearboxes from SPINEA
- Innovative, high precision gearbox includes
axial/radial output bearings for a compact high torque,
backlash-free positioning solution
- TwinSpin bearing reducer boasts more than twice the torque and stiffness capability of similar sized competitive precision gearboxes
Heason Technologies Group has added the innovative TwinSpinŽ
gearbox from SPINEA to its wide range of specialist motion control
products.
This unique zero-backlash gearbox integrates a high-precision and
high torque, trochoidal gear system into a compact sealed housing
that includes heavy duty radial/axial output bearings. The
space-saving single unit concept is referred to as a "bearing
reducer" as it replaces the need and expense of additional load
support mechanics and its compact design and high torque-to-size
ratio offers exceptional application and cost reduction advantages
in printing, packaging and converting machinery, electronics
production and test equipment, robotics systems and other
high-precision/high torque motion control applications.
The TwinSpin uses a patented trochoidal gear reduction principle
that includes two offset "transformation members" fitted with
eccentric planetary gears that mesh via precision needle rollers in
a large gear ring - as the input shaft rotates the eccentric action
of the planetary gearing causes the outer ring to rotate in the
same direction. The input to output reduction is determined by the
ratio between the planetary and ring gear teeth. With almost 50%
simultaneous gear meshing, the teeth are able to efficiently
transmit very high torque with backlash-free performance. The
robust TwinSpin bearing reducer is also able to withstand as much
as five times overload torque under emergency stop conditions and
the torsional and axial stiffness characteristics of the complete
unit make it suitable for the most demanding applications.
Furthermore, the design boasts a low input inertia rating allowing
fast response in a servo system and noise and vibration levels are
suited to sensitive application areas such as precision measurement
and vision inspection machinery, automated laboratory and medical
equipment.
The net result is an innovative gearbox design that will outperform
conventional planetary gearboxes and offers a much improved torque
output to size ratio than the harmonic style gearbox with the added
benefit of the integral axial/radial output bearing for a very
compact gearbox solution.
Comparative tests for the TwinSpin and competitive products reveal
that as much as 100% more torque rating (continuously rated,
acceleration and emergency) is available for similar sized units
with other advantages ranging from an increased maximum input
speed, lower input inertia, more than twice the rating for
axial/radial force and tilting moment; and with a similar measured
values for tilting rigidity and torsional stiffness.
The TwinSpin design allows bi-directional operation with suitable
clamping allowing either the output shaft or the main housing to
rotate the load. It is also possible to reverse drive the gearbox
for speed increase applications or use a differential configuration
where all three parts may rotate freely. This flexibility allows
the use of just four frame configurations in a full range that
include face and flange mounted housings with either solid or
though-hole input shafts.
The TwinSpin T Series is the most compact design and essentially
represents the standard version of the bearing reducer range. The
flangeless, face mounted unit covers nine frame sizes with nominal
outside diameters from 63 mm to 300 mm and with standard reduction
ratios from 33:1 to 191:1. The rated output torque is from 37 Nm to
2940 Nm with generous acceleration and braking torque ratings of 74
Nm and 7350 Nm respectively. A range of input shaft configurations
are available including smooth, key-way, splined and semi-hollow
shafts with special requirements to order.
SPINEA include extremely detailed performance specification
information for the TwinSpin's speed/torque ratings, accuracy and
precision, and torsional/axial stiffness characteristics. Based
upon extensive statistical analysis gained over many years of
manufacture, this information is available in an 88 page catalogue
available from Heason Technologies. The catalogue, available in
hard copy or as a PDF, provides the power transmission system
designer with an invaluable resource including detailed
specifications and drawings for each model as well as performance
characteristics, selection and installation information. The range
is also supported with comprehensive selection software and
meticulous comparative analysis of competitive ranges of gearbox
products.
Heason Technologies have built a wide-ranging knowledge of
zero-backlash gearbox systems gained through more than 25 years as
a main distributor for a similar gear system. This extensive
experience attracted SPINEA to Heason, and together the two
companies are able to offer the UK market both a technically and
commercially competitive alternative for high torque, zero-backlash
gear reduction applications.
SPINEA s.r.o, the Slovakian gearbox and power transmission systems
developer is ISO 9001:2000 registered and has been manufacturing
the TwinSpin bearing reducer gearbox for more than 10 years with
large volume exports to the German and Italian machine building and
robotics markets with steadily increasing sales to users throughout
Europe, Asia and North America.
As a major player in many diverse markets including Aerospace &
Defence, Printing, Semiconductor & Fibre-Optic Manufacturing
Equipment, Simulation and Robotics, Heason Technologies are able to
supply the new TwinSpin bearing reducer range as part of a complete
motion control component solution or within a customised automation
system. It is also envisaged that the TwinSpin will be applied to
specialist custom applications where Heason Technologies integrate
its range of frameless servo motors into the bearing reducer
allowing a complete high-torque rotary positioning actuator with a
large through-hole for cable management, laser beam delivery or
slip ring assemblies etc.
For more information, please contact Jon Howard:
Heason Technologies Group Ltd
Unit 6 Lawson Hunt Industrial Park
Guildford Road
Broadbridge Heath
Horsham
West Sussex
RH12 3JR
Tel: +44 (0)1403 755800
Fax: +44 (0)1403 755810
Email: jhoward@heason.com