Structure And Mode Of Operation; Installation; General Notes On Mounting - HBM TN Montageanleitung

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Structure and mode of operation

The torque transfer standard comprises a measuring body applied with strain
gages (SGs) and cylindrical shaft ends without keys for torque application. The
strain gages are arranged in such a way that an optimum flow of torque
between the shaft end and the strain gage installation point is ensured.
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Installation

6.1

General notes on mounting

During installation, mechanical components (frame, couplings, shaft‐hub con­
nections) affect the deformation behavior of the transfer standard and thus
possibly the measurement characteristic (e.g. zero point, sensitivity, repro­
ducibility). The reasons for this could be:
S The occurrence of additional parasitic loads such as bending moments,
radial and axial forces
S Unsymmetrical torque application to the transducer
We recommend the following countermeasures to minimize these effects:
S Align the shaft train as accurately as possible.
S Use flexible couplings, e.g. multi-disc couplings.
S Apply the torque as evenly as possible to the cylindrical shaft ends through
appropriate clamping elements (clamping hubs). Hydraulically activated
clamping elements have proved effective for the most stringent require­
ments.
S Ensure that all shaft train components imposing additional load on the
torque transfer standard have low weight.
TN
A01639_02_X00_00 HBM: public
Structure and mode of operation
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