Numerical-control automatic specific gravity measurement device

Abstract

The invention relates to the technical field of automatic specific gravity measurement, and provides a numerical-control automatic specific gravity measurement device capable of accurately measuring volume and specific gravity of irregular polyhedrons. The numerical-control automatic specific gravity measurement device is characterized in that a weight sensor 7 is mounted on a container 1 and connected with a computer, the container 1 is filled with a right amount of liquid, and a piston 3 is inserted into the container 1; a step used for limiting maximum stroke of the piston is processed on the inner side of the top of the piston 3 or the bottom of the container 1; an axial through hole is formed in the piston 3, a measuring rod 4 is mounted in the through hole, and an electrode is mounted at one end of the measuring rod and connected with the computer; the other end of the measuring rod is processed with an internal thread and is in threaded connection with a screw 6 on a shaft of a stepping motor 5, the stepping motor 5 is mounted on the piston 3 through a support 8, and the stepping motor is connected with a motor controller which is connected with the computer. The numerical-control automatic specific gravity measurement device has the advantages that the device can compute specific gravity of a measured object through measured size and weight; and the specific gravity can be acquired at one step.

Description

technical field [0001] The present invention is in the field of automatic measurement of specific gravity. Background technique [0002] In daily work, it is often necessary to measure the volume and specific gravity of some complex, irregular and very small polyhedrons. For example, to know the purity of gold and silver jewelry, people often use the method of calculating its specific gravity. Because different substances have different specific gravity, the purity of the substance can be known to a certain extent by measuring its volume and calculating its specific gravity. This method is simple and easy, and it does not cause any damage to the measured object, so it is widely used. However, the premise of this method is that the volume of the jewelry should be known first, and the measurement of the volume of the jewelry should be accurate. Otherwise, it is impossible to accurately calculate the proportion of jewelry, even if it is calculated, its reference value is not...

AI Technical Summary

Problems solved by technology

However, in the prior art, a device that can accurately obtain the volume and weight of the measured object at the same time is still lacking.

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