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COMPACT SYSTEM OF
MRC
AS AN ALTERNATIVE FOR MONOBLOCKS
Comparison of mechanical constructional
solutions used nowadays by leading manufacturers of
high resolution balances.
Mechanical constructions of high resolution balances are divided into several types:
a)
traditional
b)
monoblock
c)
compact systems
Traditional constructions
have been produced for over 20 years and allowed to develop kinematic
pattern, which even today has remained unchanged. Currently offered constructions of balances
made from, so called monoblocks, function with the same kinematic pattern. The name of the traditional
construction has been adopted for balances with specific construction of bearing elements, whose
functions are now served by springy elements ( made of metal or bronze) so called flexures, mounted by
screws to aluminium levers so called rockers.
The examples of such mechanisms manufactured at
MRC
are presented in the pictures.
Constructions of monoblocks
The main aim of European companies, seeking new solutions and investing significant financial
resources into them, was to reduce the growing costs of workers assembling weighing elements and
replace them with low-cost, faster and more efficient machines.
The first monoblocks offered in the market were characterized by significant errors (high
hysteresis, temperature errors) and only after many years of research and introducing expensive, high
precision machine tools it was possible to reach the resolution of 1-2 mln divisions. Even today, in
professional solutions, some manufacturers are still using traditional system of flexures.
The examples of monoblock constructions sold today are presented in the pictures.
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