Non-contact precision measuring instrument

Abstract

The invention discloses a non-contact precision measuring instrument, which comprises a measuring platform used for placing a to-be-measured piece and a measuring tool, wherein the measuring tool comprises an upright post arranged on the measuring platform, and a coarse measuring tool and a fine measuring tool which are connected in series on the upright post, and the size of the to-be-measured piece is the reading difference of the coarse measuring tool and the fine measuring tool; the coarse measuring tool comprises a lifting block and a dial indicator arranged at the upper part of the lifting block, and when the bottom surface of the lifting block is arranged on the measuring platform, a dial indicator thimble is contacted with the top surface of the lifting block and displays that thereading is zero; and the fine measuring tool comprises a non-contact measuring tool fixed with the lifting block, and the measuring zero point position of the non-contact measuring tool is matched with the bottom surface position of the lifting block. The non-contact precision measuring instrument is simple to operate, wide-range, high-precision and non-contact measurement can be realized, and thesurface quality of a product is not influenced on the premise of ensuring the measurement precision.

Description

technical field [0001] The invention belongs to the field of measuring instruments, and more specifically relates to a non-contact precision measuring instrument. Background technique [0002] The measuring instrument is a commonly used measuring tool, which is a necessary link and appliance to ensure product quality. Commonly used length measuring tools mainly include rulers, vernier calipers, micrometers, etc., all of which are contact time measuring tools with a large measuring range but low accuracy. With the development of science and technology, the precision requirements of the manufacturing industry are getting higher and higher, and the requirements for the surface quality of the products are also getting higher and higher. Many products have special treatment on their surfaces. When measuring with traditional measuring tools, it is very easy to damage the product surface. , affecting the quality. Contents of the invention [0003] The purpose of the present inv...

AI Technical Summary

Problems solved by technology

Commonly used length measuring tools mainly include rulers, vernier calipers, micrometers, etc. These are contact measuring tools with a large range, but their accuracy is low

With the development of science and technology, the precision requirements of the manufacturing industry are getting higher and higher, and the requirements for the surface quality of the products are also getting higher and higher. Many products have special treatment on their surfaces. When measuring with traditional measuring tools, it is very easy to damage the product surface. ri, affect the quality

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