Device and method for measuring central thickness of spherical part

Abstract

The invention relates to a device and method for measuring the central thickness of a spherical part. The measuring method comprises the following steps that 1) an upper measuring head and a lower measuring head are in butt joint via relative movement, and reference displacement values detected by an upper displacement sensor and a lower displacement sensor are recorded; 2) the spherical part to be measured is displaced in a measurement gap of a bearer, the upper measuring head is moved downwardly to make contact with and abut against the upper surface of the spherical part to be measured, the spherical part to be measured is translated, and the relative displacement extremum, relative to the measurement reference, measured by the upper displacement sensor is recorded; 3) the lower measuring head abuts upwardly against and makes contact with the lower surface of the spherical part to be measured, and the relative displacement value, relative to the measurement reference, measured by the lower measuring head is obtained; and 4) the relative displacement extremum and the relative displacement value are algebraically added to obtain the central thickness of the spherical part to be measured. According to the invention, measurement is simple and reliable, overturning leveling is not needed at the end surfaces, and the measuring efficiency and precision are higher.

Description

technical field [0001] The invention relates to a measuring device and a measuring method for the center thickness of a spherical part. Background technique [0002] At present, digital display height gauges are mostly used to detect the thickness of parts, such as the thickness detection device disclosed in the Chinese utility model patent specification with the authorized announcement number CN201251434Y. When measuring, the workpiece is placed on the base, and the measuring head is pressed on the workpiece. , and then get the thickness of the workpiece. When using this type of thickness detection device to measure the center thickness of a regular spherical part such as a spherical lens, the thickness of the two sides at the center of the regular spherical lens can be measured correspondingly, and the difference between the two thicknesses is the thickness at the center of the lens. However, this measurement method requires horizontal leveling of the front and back top s...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a device for measuring the center thickness of spherical parts with simple structure and convenient use. At the same time, the invention also provides a method for measuring the center thickness of spherical parts to solve the problem of horizontal adjustment of the front and back top surfaces in the prior art. Technical problems that lead to low thickness measurement efficiency

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