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Materials Matter

Coordinate transformation and why it is important to gear measurement

Often, the results from different measurement systems must be combined to provide useful results in terms of our measurements. The coordinate transformation is used...

Additive manufacturing and gears

The American Gear Manufacturers Association’s (AGMA) Emerging Technologies Committee (ETC) recently organized a show floor tour of the Rapid + TCT Exhibition (Rapid). The...

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...

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,...

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...

Worm gearing twists its way into our design suite

Worm gearing has many benefits and usable attributes that are unique to this geometry. Gearing of this type dates to 4000 B.C. The “worm”...

Oil, lubricant, lubrication – what is this all about?

Two months ago, I presented readers with a primer on lubricants and lubrication. That begins a discussion that can go one of two ways....

Oil, lubricant, lubrication – what is this all about?

This month I want to slide into a column discussing lubrication (Sorry). We all intuitively know that we must lubricate any “joint” where there...

Angle of approach and angle of recess: What are all these angles?

Geometrically speaking, these two angles have a fairly straightforward definition. The angle of approach is the angle or arc that the point of contact...

Concepts of motion control and load-holding technologies

As a lead-in to the upcoming Motion + Power Technology Expo, my article this month will focus on load-holding technologies. The theme of this...

The importance of gear inspection and the meaning of the data

A topic near and dear to my heart, I am often tasked with answering the question; “What went wrong?” As we all know, there...

An overview of differential function and gearing

This month’s article is going to take a slightly different point of view and discuss the use of a particular type of gear compared...

Dissimilar material and/or hardness as a function of gear size

Some say that metallurgy is a “black art.” Actually, it is a very skilled art, demanding in its precision and consistency. The people who...

Material pre-treatment as a function of performance

This article is not intended to go deep into the metallurgy of pretreatment, nor will it discuss the nuances of the machining or heat...

Ensure supply chain continuity creates more value for customers

Encountering challenges throughout the production process for any type of gear is to be expected. The steps in the supply chain — from melting...

Materials matter – and so does total cost of ownership

Gear designers have options when exploring cost reductions within a component, from using different material grades and leaner processing to incorporating less-proven offshore suppliers....

Making gears takes more than good design

It’s a given that “materials matter” when it comes to gear design. But “materials” can be more than just the raw components. Our team...

Mechanical paste polishing vs. CAVF finishing of gears

A recent Materials Matter article compared generic deburring versus CAVF (chemically accelerated vibratory finishing.) Both techniques are conducted in a vibratory unit. The main advantage of...

The challenges of generic deburring vs. CAVF deburring

Relative to gear hobbing, shaving, and/or post heat-treat grinding to generate accurate tooth morphology there may come a time wherein vibratory deburring is a...
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