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Determining tooth thickness of various gear types – Part III

In order to determine the tooth size of a gear after taking into account the backlash allowance, you first must determine what the nominal...

Back to basics – Toughness testing of material

In the last series of articles, we discussed hardness testing and tensile testing. In these applications, the loading is a static load over a...

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...

Q&A with Aaron-Michael Eller

What’s a typical day like for you at Seco Tools? It’s a little bit different now since the Coronavirus hit. We all have a little...

Changes ahead in the roughness standards

I have written numerous articles on tooth flank surface roughness measurement. This is such a page-turner of a subject! Actually, I was thinking I...

Back to basics: Mechanical testing – the tensile test

In the previous article, we discussed hardness testing, and the various methods of hardness testing were illustrated. In this article we discuss the tensile...

Determining tooth thickness of various gear types – Part II

In order to determine the tooth size of a gear after taking into account the backlash allowance, you first must determine what the nominal...

Q&A with Marcel Geurts

What’s a typical day like for you at Neugart? I’m product manager here at Neugart. In total, we have four product managers on the team....

Determining tooth thickness of various gear types

In order to determine the tooth size of a gear after taking into account the backlash allowance, you first must determine what the nominal...

Back to basics: Hardness testing, Part 2

In last month’s Hot Seat article, we began a discussion on the various methods of mechanical property testing. Overall, we are going to discuss...

Q&A with Don Carlson

What’s a typical day like for you at KA-Wood Gear & Machine? We have a very experienced team at Ka-Wood Gear that works with...

Roughness measurement: Optical vs. contact stylus profilometry

To date, I have written several articles on contact stylus profilometry. This roughness measurement technique, when applied to gear flanks, is repeatable and reproducible...

Rotorcraft gearbox regulations: LOL (not what you think)

For more than a decade, one of the most intensively researched subjects in aerospace engineering has been LOL. No, we are not talking about...

Q&A with Jack Conway

What’s a typical day like for you at Atlanta Gear Works? There really is not a typical day.  We are an extension of the...

Back to basics: Hardness testing, Part 1

In a series of Hot Seat articles, we are going to discuss the various methods of mechanical property testing. We will be covering hardness...

What is a standard anyway?

There is an old adage that goes: “Everything old is new again.” This is commonly used when a fad — like bell-bottom blue jeans...

Four basic types of fracture mechanisms: Part II

In the previous article, we discussed the fracture surfaces that are apparent for ductile or overload type fractures, and the fractures that occur with...

Q&A with Torsten Schultz

What do you do at NORD? I’m the president and CEO of NORD for the U.S. Overall, I set the strategic direction of the company....

Understanding dimensional stability in gearing

In the retail community, the term shrinkage is defined as the difference between the value of the physical on-hand inventory minus the expected on-hand...

Roughness measurement tips: Calibration, the razor blade test

In my previous column in Materials Matter, I reviewed the use of the “Scratch Pad” for the overall checking of the contact stylus profilometer’s...
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