Evolution through Innovation
Its name has multiple meanings, having to do with such tenets as self sufficiency and entrepreneurial will. Founded by Kohki Imura in Toyama, Japan,...
High Performance Gears for Heavy Duty Transmissons
Planetary gears in heavy truck gearboxes are normally manufactured by forging a blank, turning, hobbing, shaving, and heat-treatment followed by grinding. Due to the...
Engineered Heat Treatment for Stronger Aerospace Gears
It is well established that carburization of low alloy steels promotes compressive residual surface stress upon quenching, and that compressive surface stresses enhance fatigue...
Advances in Single-Pass Bore Finishing
The single-pass bore finishing process was originally developed to improve the bore quality of cast iron components, such as hydraulic valve bodies. For many...
Proven Processes for Improving Parts
It's rare to come across a manufacturing process or method that first promises multiple increases in productivity, and then delivers even more. One such...
Gear Mesh Misalignment
Gear mesh misalignment may result in shifts in the load distribution of a gear pair that results in increasing contact and bending stresses, moving...
Defeating Tooth Flank Deformation
Every gear is subject to torque, resulting in elastic deformation of the toothed parts as well as the entire rotor body. Individual teeth bend,...
Steeling Savings with P/M Materials
Recent advances in powder manufacturing and processing have made chromium an attractive element in P/M manufacturing. In addition to chromiumís positive affects on strength...
Forging Foundations
In past issues we’ve featured forging companies serving the gear-manufacturing industry in our profile and Q&A sections, and talking with them piqued our curiosity....
The Methodology of Metallurgy
The study of metals (metallurgy) address material selection, failure analysis, heat treating, mechanical testing, non-destructive testing, metallography, and material characterization. Small and large manufacturing...
The Pressure’s On for Decreased Distortion
Many manufacturers have reported that low pressure vacuum carburizing (LPC) has resulted in less distortion on gears than atmosphere carburized gears when accurate...
Special Report: A Firsthand Look at Buying Rebuilt
A company was bidding on a project and soon realized it couldn’t win if it had to buy new equipment due to the expense,...
Holding the Line
As chief designer for Speedgrip Chuck, Inc., I have a fascinating job. I've been involved in the design and building of work holding devices...
A Revolution in Hobbing Technologies
In a market that has not seen any truly revolutionary changes in decades, LMT-Fette is pushing the long overdue evolution of hobbing. LMT demonstrates...
Calculating the Inverse of an Involute
The involute tooth form is the only tooth form that provides true conjugate action normal to the tangency of the tooth curves passing through...
Cylindrical Gear Conversions: AGMA to ISO
The rational use of the addendum modification coefficient is one of the topics better known by specialists of gears working in the metric system...
Motion: Impossible – Without the Right Lube
In a recent survey conducted by Shell of U.S. industrial companies, 50 percent of respondents said that industrial gearboxes were one of their most...
A New Trend in Broaching Technology
With regards to broaching, is making new technology investments profitable? We see customers making choices based on capital investment costs verses long-term cost per...
SPECIAL SERIES | Layout Guides Part 3: Hypoid Gear Teeth
This is the third of a three-part series of instructions to assist engineering designers and detailers with the process of correctly laying out bevel...
Hard Choices: Diamond or CBN?
A careful comparison between diamond and cubic boron nitride (CBN) will eventually result in a clear decision when it comes to choosing an appropriate...
