Linear units with toothed belt drive: LEZ 1/LEZ 2/LEZ 3/LEZ 9
Assembly instructions
Page 9
2
Installation instructions and overview of functions
This will give you an initial overview of the mechanical structure, the installation and assembly of linear
units and a description of how they work.
The instructions for commissioning/configuring the axis system and its programming by users depend
on the motors used and the relevant controllers with output stages and can be found in the respective
documentation.
2.1
Operation
Linear units in the LEZ series (toothed belt drive) are built as modules.
The basic carriers of these linear units are linear guide rails (LFS) with the corresponding shaft slots
and trolley, the toothed belt drive and the optional motor drive module.
The linear guide rails (LFS) made by isel consist of rigid aluminum sections with precision steel shafts.
Isel shaft slots rely on the rolling action of steel balls on steel inserts in aluminium sections and on
precision steel shafts . 4 ball recirculations are used in each shaft slot. The recirculating ball steering
systems are glass fibre reinforced.
Shaft slots
1)
Lubrication on both sides for the ball
recirculations.
2)
The basic supports for all linear guides are
extruded aluminium sections to DIN17615,
which are fitted with T-groove slots for
fastening in the base of the section or have
mounting holes.
3)
Precision steel shafts with a hardness of
60±2 HRC are used as guide rails.
4)
Glass fibre reinforced recirculating ball
steering.
5)
There are patented ball recirculation
systems in the linear slot. Load-bearing balls
run between two ground steel pins and the guidance shaft respectively.
6)
The slot is adjusted by means of self-locking screws. For this, the rows of balls and shafts or pins
are in contact with each other and thus pre-stressed.
The slots are set to the relevant pre-stress at the factory. All shaft slots are available as an option in
stainless steel.
7)
To fasten the transport loads, slot plates, etc., the shaft slots are fitted with T-groove slots and
mounting holes.
Trolley
1)
The ground steel fastening plate with a
thickness of 8 mm is used simultaneously for
housing the rollers and the load and is fitted
with M6 fastening threads for this purpose.
2)
Central rollers
3)
All linear units can be fitted both with shaft
slots and with a trolley.
4)
Roller principle similar to a two-row ball
bearing with ogival tracks.
5)
Eccentric rollers for adjusting the trolley. All
trolleys are preset in the factory.