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HLEZ – linear actuators with rack-and-pinion drive
Automation
18
Parker Hannifin GmbH
Electromechanical Division
The HLEZ - a combined technology
The new design
Taking the HLE linear units as its
base, a new rack-and-pinion drive
system has been designed for the
HLE100 and HLE150.
The system which is especially
suitable for long travel distances
and high speeds, opens up a
whole range of new application
options. The patented rack princi-
ple permits "endless" travel whilst
maintaining high accuracy. At the
same time the dynamic character-
istics of the system are outstand-
ing.
When required several carriages
can be positioned on a single unit
independently of each another. In
combination with other HAUSER
mechanical components, this al-
lows the construction of efficient
and cost-effective gantry and
automation systems.
Our experience
You can have confidence in our
experience and skill because over
6000 linear axes are already in
use throughout the world –
whether it be in automatic textile
equipment, handling systems,
packaging machines, automatic
painting and binding equipment,
etc....
The HLEZ is found across a broad
application area - in clean rooms,
in the food industry, in chemical
production plants and in the pro-
duction of precast concrete com-
ponents.
We work together with a wide
range of sectors including the
automobile industry, machine tool
manufacturers, microelectronics
manufacturers - and hopefully
soon with you ...
Examples/applications
Sick
, Waldkirch: sensor testing
equipment
Desarrollo
, Spain: gantry ro-
bots for transporting glass fibre
coils
Springs
, USA: sewing textiles
Weckenmann
, Dormettingen:
wide-area gantry robots for the
precast-concrete industry
AZO
, Osterburken: marshalling
equipment
EEW
, Schönberg: high-speed
milling centre
Telecom
, Switzerland: tele-
phone accessory order picking
system
LT Engineering,
Switzerland:
shelf-picking unit for small
parts stores
Allied Signal
, USA: sewing air-
bags
Weber-Haus
, Linx: boring and
sawing cut-outs for the mount-
ing of distribution boxes and
socket outlets
HLEZ drive principle
The HLEZ drive offers all the ad-
vantages of a rack drive, but with-
out the usual drawbacks. The
short timing belt (which is inde-
pendent of travel lenght) reduces
belt stretching to an absolute mini-
mum.
The lateral deflection roller preten-
sions the system and thereby re-
moves backlash. Hold-down roll-
ers ensure that sufficient teeth al-
ways remain in mesh. The combi-
nation of plastic timing belts and
an aluminium rack-and-pinion is a
safe
and clean drive which requires no
lubrication.
All of this offers the following
advantages:
high constant rigidity regard-
less of the travel or position
Very long travel distances
achievable
high levels of accuracy
high speeds are possible
smooth, low-noise running
no lubrication necessary
any installation position possi-
ble