In my last post I insisted that good design wins in the marketplace. As a student of automotive history, I am compelled to admit that some very gre...

Suppliers are working hard to make sure their heat treating equipment is controllable, repeatable and efficient, and manufacturers continue to incorporate technology that gives heat treaters and their customers more information about what's going on inside the magic box.

Not to worry — no politics here. The “backlash” I want to talk about is the “lost motion” in gear systems. It sometimes seems to rile people up alm...

This paper presents a new approach to repair industrial gears by showing a case study where pressure angle modification is also considered, differently from the past repairing procedures that dealt only with the modification of the profile shift coefficient. A computer program has been developed to automatically determine the repair alternatives under two goals: minimize the stock removal or maximize gear tooth strength.

Effective case depth is an important factor and goal in gas carburizing, involving complicated procedures in the furnace and requiring precise control of many thermal parameters. Based upon diffusion theory and years of carburizing experience, this paper calculates the effective case depth governed by carburizing temperature, time, carbon content of steel, and carbon potential of atmosphere. In light of this analysis, carburizing factors at various temperatures and carbon potentials for steels with different carbon content were calculated to determine the necessary carburizing cycle time. This methodology provides simple (without computer simulation) and practical guidance of optimized gas carburizing and has been applied to plant production. It shows that measured, effective case depth of gear parts covering most of the industrial application range (0.020 inch to over 0.250 inch) was in good agreement with the calculation.

Square, rectangular, triangular, oval, even fish-shaped - Clayton Boyer's Weird Gears come in every shape except for circular, and they all work. If you're interested in giving them a gander, check out Boyer's Youtube video (just search "weird gears" and it'll be right there at the top) to see them in motion

My last posting on surface temper inspection prompts me to think about the problem of non conforming components. It is never fun to throw valuable ...

[starbox] In my last posting I wrote about some of the projects I have been involved with to squeeze a bigger part in an existing machine. Most ...

Ford Motor Company Conference and Exposition Center, Dearborn, Michigan. The ALD Holcroft Vacuum Carburizing Symposium will feature two days...

[starbox] No, I am not launching a criminal investigation. The title of this posting summarizes my ongoing study of the history of gear ratings....