Continuing my rant on over-reliance on commercial software The gears are the easy part. My clients and students have grown tired of my ...

I missed an important point in a product specification this week. Fortunately, my client caught it and I was able to submit another design in time ...

You do not always have to say “no” when confronted with non-conforming parts. Here are a few “fixes” I have been comfortable authorizing:

There is a great deal of science involved in measuring things, but considerably less on what the baseline dimensions and clearances should be. This...

At the dawn of the Industrial Revolution, so-called mechanics were tasked with devising the precise methods that would make mass production possible. The result was the first generation of machine tools, which in turn required improved tooling and production methods.

The complete Product News section from the January/February 2013 issue of Gear Technology.

The TRIBOS-RM from Schunk is designed for cutting speeds up to 50,000 rpm while offering run-out accuracy of less than three microns. The...

Welcome to Revolutions, the column that brings you the latest, most up-to-date and easy-to-read information about the people and technology of the gear industry.

The quality of the material used for highly loaded critical gears is of primary importance in the achievement of their full potential. Unfortunately, the role which material defects play is not clearly understood by many gear designers. The mechanism by which failures occur due to material defects is often circuitous and not readily apparent. In general, however, failures associated with material defects show characteristics that point to the source of the underlying problem, the mechanism by which the failure initiated, and the manner in which it progressed to failure of the component.

In the process of developing gear trains, it occasionally occurs that the tip of one gear will drag in the fillet of the mating gear. The first reaction may be to assume that the outside diameter of the gear is too large. This article is intended to show that although the gear dimensions follow AGMA guidelines, if the gear is cut with a shaper, the cutting process may not provide sufficient relief in the fillet area and be the cause of the interference.