Build-up force standard machine capable of automatically centering

Abstract

The invention belongs to an automatic centering technology and particularly discloses a build-up force standard machine capable of automatically centering. The build-up force standard machine comprises an upper bedplate and a lower bedplate; a piston, an oil cylinder and a standard sensor are arranged on the upper bedplate; an upper pulling plate and a moving beam are arranged between the upper bedplate and the lower bedplate; the upper pulling plate is connected to the upper ends of two parallel screw rods by screw threads; the moving beam is connected to the middle parts of the screw rods by screw threads; and the lower ends of the screw rods are provided with compression working tables. By the structure design of the compression working tables, a correction sensor is placed on the compression working tables, so that automatic centering of a measured sensor is completed, a gravity line of the measured sensor is enabled to be coincided with the center of the standard sensor and an error generated when the build-up force standard machine is utilized to measure the measured sensor is reduced. Performance of the build-up force standard machine is further improved.

Description

technical field [0001] The invention belongs to the automatic centering technology, and in particular relates to a superimposed force standard machine. Background technique [0002] With the advancement of high-precision load cell technology and the improvement of hydraulic control technology, a standard sensor (or a group) is used as a standard, connected in series with the detected sensor, and the load is applied hydraulically or mechanically to determine the detected sensor. The superimposed force standard machine with force value parameters has begun to be widely used. [0003] The ordinary superimposed force standard machine mainly uses the oil cylinder and the piston to load the standard sensor and the tested sensor at the same time. The two bear the same load. The size of the load is determined by the output of the standard sensor. When the output reaches a certain standard force value, the stability The force value and record the output of the sensor under test. ...

AI Technical Summary

Problems solved by technology

Since the force sensor is symmetrical in structure, the center of gravity of the sensor can be approximately regarded as the symmetry line of the sensor, but it is difficult for the superimposed force standard machine to ensure that the center of gravity of the loading frame and the sensor to be calibrated is in a vertical line with the center of gravity of the standard sensor. On the line, this may cause the standard sensor and the tested sensor to tilt in the direction of the force when the cylinder plug system acts, making the loads of the standard sensor and the tested sensor inconsistent, affecting the accuracy of the superimposed force standard machine

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