Abstract
In today’s fast-moving world, the manufacturing industry must keep up with evolving trends. One such trend that has greatly impacted the manufacturing industry is called Industry 4.0 and is regarded as the fourth industrial revolution. In this revolution one important aspect is that of quality. This paper makes a comparative study between tactile and optical measuring machines in the context of Industry 4.0. As the manufacturing industry must be more flexible and solve problems in a timelier manner, it is important to identify the right technologies appropriate for quality control.
Highlights
The concept of Industry 4.0 has been developed since the beginning of the 21-st century, but the first mention of the concept of Industry 4.0 was made in an article in 2011 published by the German government [1]
It refers to the fourth industrial Revolution, phase through which the manufacture of products and equipment is currently going through
The Industry 4.0 concept touches on three dimensions: horizontal integration across the value creation network, end-to-end engineering across the product life cycle and vertical integration and networked manufacturing systems [3]
Summary
There have been few studies done on tactile and optical measuring equipment comparisons. The results of the study show that the tactile measurements are more accurate than the optical ones. Another study [5] compared a tactile formtester (Mahr Formtester MMQ40) with a white-light interferometer (a Michelson interferometer with a high precision 45° conical mirror) while measuring profiles of a cylindrical part. Their results show that the point cloud obtained through the two methods are in good agreement. A third study [6] compared different measurement devices (both tactile and optical) while measuring aspheres. Another study [7] that found good agreement between measuring machines, compared measurements of microgrears with a micro-CMM, computer tomography, optical CMM and a gear measuring instrument
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