Micrometers

 

Measurements are one of the most complex and not simple processes on earth. Measurement and accuracy are integral parts of progress, how were the Egyptian pyramids or the Eiffel Tower built? and many other structures, in the process of its development, mankind was faced with the need to have accurate measuring instruments. It is difficult to imagine a world without a ruler, tape measure, caliper, micrometer and a huge number of other measuring tools and devices. The first measuring instruments were primitive and simple, made of stone and wood, later modernized with the technological process and became more and more accurate.

The history of the emergence of measuring instruments and the micrometer, including several turns. The measuring tool has evolved along with technological progress. Industrialization would not have been possible without measuring devices. For development, mankind began to produce tools for cultivating the land, the first tools were primitive from stone, then iron, and at a certain stage of development, there was a need for an accurate measuring tool. For the production of precise parts in accordance with the design and development, an accurate measuring tool that met the requirements of the time was needed. With the development of mechanical engineering and other industries, they were accompanied by modern measuring instruments that meet the challenges of the time. The micrometer became such an instrument.

. Henry Ford placed great importance on precision measuring instruments in his famous assembly line manufacturing process. In his book, Henry Ford described it this way: “If the parts do not fit exactly, the car will not be able to move. This forced us to strive for absolute precision in production, in some cases reaching up to one ten-thousandth of an inch. Under ordinary conditions, such accuracy cannot be achieved; we achieve it only in exceptional cases, but in most of our operations the accuracy reaches one thousandth of an inch.

A micrometer is one of the most popular and indispensable measuring instruments in production. The popularity of the micrometer is comparable to that of the caliper. To date, there are a lot of types of micrometers, digital mechanical, for measuring sheets, gaps, etc.

The use of a screw pair with a reading device was used in cannon sighting mechanisms, later a similar screw pair was used in various types of geodetic instruments.

The first patent for a micrometer as an independent measuring tool was issued to Jean-Louis Palmer in 1848 (France). Palmer made a patent for his invention for precision measurements, which later became known as a micrometer, Palmer's invention did not change much in more than a hundred years. Changed design, colors, etc. but the principle itself remained unchanged. Only at the end of the 20th century it was replaced by a modern digital micrometer, a more accurate, reliable and easy-to-use device, with the ability to connect to a computer.

 

Long practice and scientific research have concluded that optimally the screw in the nut can only move 25mm, thus all types of micrometers are manufactured in 25mm increments. In digital micrometers, the measurement accuracy is 0.001 mm.

 

 

 

 

 

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Catalog 2022

Release №62

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