Measurement

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Experts agree that, among other tools, digital twins are emerging as stars of smart factories. These are 3D duplicates of parts, products, and buildings.

Today’s manufactured components are more multifaceted than ever, requiring more parts, additional updates to those parts and ever tighter tolerances. 

Measurement and inspection standards are traditionally updated on a regular schedule. However, the form measurement standard for out of roundness, B89.3.1, has not been updated since its initial release in 1972, and is no longer an active standard available through ANSI.

“Measurement uncertainty is the expression of the statistical dispersion of the values attributed to a measured quantity. All measurements are subject to uncertainty and a measurement result is complete only when it is accompanied by a statement of the associated uncertainty, such as the stand deviation."

Indicators have evolved and many different types have been introduced such that there now exists a whole world of indicators.

Manufacturers looking to improve throughput and efficiency can bring precision to their production with 3D measurement technologies. 

As the manufacturing industry increases its focus on quality control, and parts become more diversified and complex automatic measurement programming is on the rise.

Simply stating that your gage passed or failed a calibration does not tell the whole story.

For most students, measurement and GD&T is a new subject for them. I get the opportunity to review the basic concepts each year. Let's review some of the elements of geometric dimensioning and tolerancing.