Powder Metal Gears, Part II
NVH is one of the most difficult areas of gearing approaching black art. Transmission developers have their own standards for testing. Often subjective measurements...
Exploring bevel gears and techniques for producing gears to exact specification
For some hundreds of years angled gearing has been used to transmit power between non-parallel shafts. In those olden days the power sources were...
Nitriding continues to gain market share as a case hardening process
By the time you read this column, the 6th International Quenching and Control of Distortion Conference will have been concluded four weeks prior. Dozens...
Powder Metal Gears, Part I
This will be the first in a series of smaller articles on Powder metal gear technology. Each article will focus around a topic that...
Even environment and location are important to determine application stresses on gears
It was once a simple matter to select a gear reducer from a catalog. In order to allow for the application and the inaccuracy...
Orders increase for pusher furnaces for those planning to employ oil press quenching to...
Several columns ago I said we were receiving indications that there was a renewed interest in pusher furnaces for carburizing … well that sure...
Q&A with Daniel Herring
As the "Heat Treat Doctor" how has your work impacted the industry?
I feel my greatest contribution is having the opportunity to share the technical...
Terry McDonald: Site Safety
We all enjoy the nice warm weather and the pleasures of the outdoors, but summer also brings its own set of safety concerns that...
An increasing demand for minimal backlash has been created by the precision required for...
In the present day a precision reducer's backlash is typically three to six arc minutes, and on an eight-inch pitch diameter that is a...
Before bringing heat-treating in-house, study existing outsource processes so transition is seamless
Your company anticipates increased competition in your market so bringing heat treating in-house is one of your cost control strategies.
First, you identify per part...
Q&A with Michael Menz
Please tell us about your new role with Riley Gear Corporation.
The new roll of Executive Vice President consists of managing the day-to-day operations and...
Terry McDonald: Site Safety
Machine-related injuries or fatalities are at the highest during maintenance, service, repairs or adjustments. One simple way to avoid accidents or deaths is to...
When considering the gear mesh, backlash is high on the list of misunderstandings
Among the many considerations when considering the gear mesh, backlash is high on the list of misunderstandings. Backlash has a cyclically fluctuating value between...
91 percent of survey respondents dunk quench in oil. So, why does LPC continue...
Twelve years ago I commissioned a study to identify trends in the heat treating industry where part of that survey involved three processes: traditional...
Q&A with Stephen P. Radzevich Ph.D.
You have written a book titled, Theory of Gearing: Kinematics, Geometry, and Synthesis. What does the book discuss?
This book systematically presents and develops a...
Q&A with Jack Fiorille
As a manufacturing engineer for Elyria Manufacturing Corp., what are your duties?
As a manufacturing engineer my focus is in machining, quoting prices for customers,...
Terry McDonald: Site Safety
I was talking to a friend the other day who works in manufacturing for a decent sized company. He was complaining that his employer...
Proper lubrication reduces frictional resistance and heat, improves the gear efficiency
Critical to a gear's operation is the lubrication type and method of application. Lubrication is a science and for new applications consulting with the...
Shallow case hardening in mesh belt, cast link belt furnaces acceptable when fixturing is...
Images of pushers are the likely style that comes to mind when people first think of continuous furnaces. When deep case and fixtured quenching...
Terry McDonald: Site Safety
It’s always great news to hear that business is picking up for a company, especially if layoffs were required or shifts eliminated during the...
