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The load
cell model 8451 was developed for the work forces arising
on smaller manually operated presses. With its small dimensions
in height of only 70 mm it is mounted in place of the
tool’s upper part into the stamps boring. On its
lower side it
features the same boring 10H7 used for adapting the
tool. As a result,
the actual compression force on the axis of the stamp is
measured. The application of this load cell is
therefore suitable
for all standard manual presses with a stamp boring of
10H7.
The
vertically arranged compression body makes the load
cell less
vulnerable for rapidly rising forces as well as
relatively sturdy
against load from lateral forces or torsion.
The mounting of this load cell into the press is very
simple and does not
require additional mechanical parts that are needed when
using other sensors to keep the force on the sensor axis.
Manual
work places can be configured for left and right hand workers
as the connecting cable can be taken out of the press to
the other side of the work zone by simply turning the
load cell.
The
construction of the load cells ≤ 0 ... 5 kN
fulfils the protection
class IP67 with its high-strength cable gland and useof
O-ring seals to cover the measuring element. Therefore
it is suitable also
for working places where lubricating and cooling
liquids are used.
Load cells
with measuring range 0 ... 2 kN have a mechanical overload
protection up to 5-fold of the range.
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| Description |
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The load
cell is a compression element with strain gauge
stripes applied to
both sides of the interior. The measuring element is a
horizontally arranged membrane for measuring ranges 0
... 2 kN. The Wheatstone bridge consisting of wired
strain gauges
supplies a bridge output voltage in direct proportion
to the physical
measurement value. Condition for good measurement
results is a stable reference supply voltage.
The load
cell measures the compression forces between the ring
formed contact area to the press stamp and the press tool.
The opposite areas must be flat, grounded and hardened.
The pin on
the upper side and the drill on the bottom serve
only as mechanical joints
for mounting and aligning the components
correctly.
The pin
has two flat parallel surfaces which help to fasten
the sensor in the
stamp drill with the cable leading out in the right
direction. The tool is
fastened to the drill of the sensor body with
the help of a clamping screw.
The
integrated sensor connecting cable is approx. 1 m long
and designed for
many cycles, being a robot type cable.
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