High-precision mechanical balance

Abstract

The invention discloses a high-precision mechanical balance, which comprises a scale pan, a balance mechanism, a base and a supply battery, wherein the balance mechanism comprises a cross beam, a cross beam knife edge, a knife edge supporting surface, a bracket, an upright post and a photoelectric indication system; and the photoelectric indication system comprises two photoelectric potentiometers, a sensitive galvanometer, a light source, a cursor lens and a reflecting mirror. The disclosed high-precision mechanical balance with a novel design and a simple structure adopts the magnetic levitation technology to achieve the non-contact support between the base of the mechanical balance and the cross beam, so that the friction force of the cross beam knife edge can be reduced greatly, and the measuring accuracy of the mechanical balance can be improved effectively.

Description

technical field [0001] The invention relates to a balance, in particular to a high-precision mechanical balance, which belongs to the technical field of measurement. Background technique [0002] In quality metrology, the balance is an important measuring tool. It must be used to measure from the measurement of the measurement standard to the daily measurement of the value. It is not only closely related to people's daily life, but also makes a contribution to the development of science. made an indelible contribution. Until now, people are still constantly researching the balance, and with the help of modern means, various performances of the balance are improved to meet the needs of people's scientific research and daily life. However, with the development of science and the progress of society, people have higher and higher requirements for the accuracy, sensitivity and convenience of mass measurement. At the same time, people have to develop instruments suitable for var...

AI Technical Summary

Problems solved by technology

[0003] At present, the balance fulcrum of most mechanical balances adopts the contact type, which inevitably leads to the problem of knife-edge friction, and the measurement accuracy of the balance is closely related to the friction of the knife-edge. The smaller the friction, the higher the accuracy. Precision, try to make the knife edge as sharp as possible to reduce friction, but this reduces the maximum load. When the load of the measured object is large and requires high precision, it often cannot meet the measurement requirements.

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