Strain gauge grinding and resistance adjusting system and method

Abstract

The strain gauge grinding and resistance adjusting system provided by the invention is high in automation degree, ensures the detection precision and high yield, and can effectively reduce the cost. The system comprises a resistance tester and a machine table (2) containing an XYZ-axis moving table, and further comprises at least one strain gauge placement table (3) and a grinding and testing integrated assembly (5), and the grinding and testing integrated assembly comprises an assembly substrate (6), a grinding module and a testing module; under the action of the XYZ-axis moving table, the grinding and testing integrated assembly moves to the strain gauge placement table to grind a resistance-adjusting strain gauge (4) to be tested and measure the resistance value in real time, the measured resistance value is fed back to the resistance tester and the control table located in the machine table in real time, whether the resistance-adjusting strain gauge to be tested needs grinding and resistance adjusting or not is judged according to the tested resistance value, and then the resistance-adjusting strain gauge to be tested needs grinding and resistance adjusting. And if not, the product is a qualified product or an NG product. The method can be applied to the field of intelligent equipment.

Description

technical field [0001] The invention relates to the field of intelligent equipment, in particular to a strain gauge grinding resistance adjustment system and method. Background technique [0002] The strain gauge is an element composed of a sensitive grid and the like for measuring strain. When in use, it is firmly pasted on the measuring point of the component. After the component is stressed, due to the strain of the measuring point, the sensitive grid is also deformed and its resistance occurs. Change, and then the resistance change is measured by a special instrument, and converted into the strain value of the measuring point. There are many kinds and forms of metal resistance strain gauges, and the common wire resistance strain gauges and foil resistance strain gauges are common. Foil resistance strain gauge is a kind of sensitive element based on the strain-resistance effect, using metal foil as the sensitive grid, which can convert the strain of the tested object int...

AI Technical Summary

Problems solved by technology

However, due to manual grinding, the resistance value of the strain gauge cannot be measured in real time. In many cases, it is necessary to pay attention to the grinding situation at all times. Only after many times of grinding and testing can the requirements be met, and even excessive grinding may cause the strain gauge to be scrapped.

The manual grinding process also requires extremely high technical proficiency of the staff, which greatly increases the labor intensity of the staff, and for the enterprise, it also greatly increases the production cost.

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