When parts you manufacture pass through numerous processes such as deep hole drilling, machining, hobbing and grinding, a CMM is essential when your customers require 100 percent in-process and final inspection.
It may not be widely recognized that most of the inspection data supplied by inspection equipment, following the
practices of AGMA Standard 2015 and similar standards, are not of elemental accuracy deviations but of some form of composite deviations. This paper demonstrates the validity of this “composite” label by first defining the nature of a true
elemental deviation and then, by referring to earlier literature, demonstrating how the common inspection practices for involute, lead (on helical gears), pitch, and, in some cases, total accumulated pitch, constitute composite measurements.
Gear metrology is a revolving door of software packages and system upgrades. It has to be in order to keep up with the productivity and development
processes of the machines on the
manufacturing floor. Temperature
compensation, faster inspection times
and improved software packages are
just a few of the advancements currently in play as companies prepare for new opportunities in areas like alternative energy, automotive and aerospace/defense.
Natural resources—minerals, coal, oil, agricultural products, etc.—are the
blessings that Mother Earth confers upon the nations of the world. But it takes unnaturally large gears to extract them.
While universally known as a Japanese “invention” that was popularized by Toyota, lean in fact traces its roots to the work of
post-World War II American occupation forces in Japan.