TECHNICAL
Motion and Power Technology Expo
Thank you to everyone who stopped by to visit us at the Motion and Power Technology Expo in Detroit this October. We look forward to providing solutions to your gear and splining needs in 2020.
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Please visit our Technical resource page for information on a variety of power transmission topics or better yet, call or email us to discuss your project. We look forward to hearing from you!

Motion + Power Technology Expo
Doppler Gear Company’s Isle Manufacturing Plant celebrates 30 years
AGMA Annual Meeting 1943

On a historical note, 74 years ago Ben Bregi attended the AGMA Annual Meeting in Rye, New York. His program is attached here: AGMA Annual Meeting 1943
At this year’s 2017 AGMA Annual Meeting, his grandson Jim was elected Chairman of the Board of Directors and discussed this document and the legacy of AGMA’s previous contributors.
https://www.agma.org/membership/leadership-committees/
GEAR SHAPING AND SPLINE SHAPING VIDEO
Quick overview about the production methods of gear cutting. This video illustrates the basic generating method of a gear shaping machine. Several examples of external and internal gears and splines are produced.
WHAT MAKES A GEAR?
In this month’s TechBit we examine a few of the most common ways to produce gear teeth.
GEAR AND SPLINE 101
So you have a gear (or a spline) and you don’t know what it is. Three basic things you should ask, what are the Pitch, Pressure Angle, and Circular Tooth Thickness. In all involute system gearing, these features define how the gear is made and are useful to understand when discussing gear and spline projects.
GEAR AND SPLINE 201
Have you ever wondered what the difference is between a “gear” and a “spline”? Or what a “Stub Tooth” is? If so, you might find the attached TechBit useful and informative. Please consider Doppler Gear for your next gear cutting, broaching or splining requirement.
HELIX AND LEAD 301
In previous TechBits we discussed the basic features of “spur” (straight toothed) gears and splines. What if your gear teeth are “helical” (angled) or you have a “worm”? How is that defined? How is it measured? The following TechBit explores the concepts of Lead and Helix and should be useful to anyone working with gears, worms, and even basic threads.
HOBBING VIDEO
If you’ve ever wondered how gear teeth are cut, this one-minute video on hobbing is for you.