Understanding worms and worm wheels
Worm gear pairs are a common gearing technology. They consist of two components, the first being the worm and the second being the worm...
Using profile shift in gearing
We all pretty much know that profile shifting is used to create gears with tooth thicknesses that are different from standard gears. By making...
Q&A with Andy Pettibone
Has Drewco always been a workholding company?
Yes. Drewco was started by Edward Drew in 1947. Ed started the company as a workholding design and...
Why is there pi in my gearing?
When I was growing up, there was a phrase that said, “It’s as American as baseball, hot dogs, apple pie, and Chevrolet.” The “it”...
Application of cryogenics to improve steel properties
In this column, we will discuss the application of cryogenically treating gears and the outcomes expected.
Introduction
There has been much discussion regarding the application of...
Load, speed, and torque
When I was a child, one piece of equipment that was found on every playground was the merry-go-round. It was a simple device consisting...
Measuring retained austenite
In this column, we will discuss the different methods of measuring the amount of retained austenite in a heat-treated steel sample.
Retained Austenite
Previously we...
Vibratory bowl media attrition: Part 2
In my previous article, I introduced you to the inefficiencies caused by the result of media attrition when vibratory processing gears. If you recall,...
Q&A with Michelle Maddox
Please tell me a little about your background.
B&R Machine and Gear Corporation is a small, family-owned manufacturing facility with a focus in replacement gearing....
Eliminating backlash in worm gear pairs
Gardening is a hobby enjoyed by many. The ability to transform a small piece of land into a beautiful landscape can be both cathartic...
Q&A with Tom Baldock
What you do at Guill Tool?
My responsibilities here are for sales in the aerospace area. I’ve been in sales most of my adult life,...
Viscosity and the viscosity index
In this column, we will discuss the viscosity and viscosity index.
Viscosity and the viscosity index are terms that are applied not only to...
A guide to creating a cleaning and washer control plan
In this column, I will discuss the control plan for a generic washer used for cleaning heat-treated parts.
Proper cleaning involves not only removing the...
Time for an oil change
When you have to change the oil in your automobile, the specification for the type of oil is clearly detailed in the service manual...
Vibratory bowl gear polishing inefficiencies
Increasing numbers of gearing projects are specifying isotropic superfinishing processes due to the demonstrated performance and durability increases generated by the reduced roughness and...
A guide to select ratio split in a multi-step geartrain
There are many variables and considerations that must be taken into account when you try to determine the optimum ratio spread, which are defined...
Control plan for oil-based quenchants
In this column, I will propose a simple control plan for oil-based quenchants and corrective actions.
Oil quenchants have been used extensively to harden steel...
Q&A with Christoph Küster
Klingelnberg is in the process of constructing a new assembly hall. Why did you feel the need to pursue this project?
In 2019, we had...
Oil, grease, or dry: What is the best lubricant for my gear train?
Have you ever been driving down the road and the check engine light suddenly comes on? Sometimes the oil service light might come on...
Selecting a cleaner for prewashing prior to heat treatment
In this column, we will discuss the selection of a cleaner for prewashing prior to carburizing. The choice is critical to avoid forming a...
