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Industry News from October/November 1984 Gear Technology.
Our experts comment on reverse engineering herringbone gears and contact pattern optimization.
Dear Editor: In Mr. Yefim Kotlyar's article "Reverse Engineering" in the July/August issue, I found an error in the formula used to calculate the ACL = Actual lead from the ASL = Assumed lead.
Rules and Formula for Gear Sizes
Industry battles it out for World's Largest Gear title.
Whether gear engineers have to replace an old gear which is worn out, find out what a gear's geometry is after heat treatment distortion, or just find out parameters of gears made by a competitor, sometimes they are challenged with a need to determine the geometry of unknown gears. Depending on the degree of accuracy required, a variety of techniques are available for determining the accuracy of an unknown gear. If a high degree of precision is important, a gear inspection device has to be used to verify the results. Frequently, several trial-and-error attempts are made before the results reach the degree of precision required.
Like many of you in the gear industry, we’ve been working extremely hard over the past few months getting ready for Gear Expo 2013, which takes place September 17-19 in Indianapolis.
News about recent products
Let’s talk about large gears. Not the size or scope or inspection process, but the forecast and market potential in areas that utilize these massive components. We’ll examine key industry segments like energy and mining and tap IHS Economics for a forecast for 2016 and 2017 (spoiler alert: it’s not great). Additionally, we’ll discuss some of the critical factors influencing global big gear manufacturers Ferry-Capitain and Hofmann Engineering.
We are currently experiencing wear on the bull gear on our converter at the steel plant. We want to be able to draw the original gear profile to compare this with the worn tooth before we decide on the next steps. I have attempted this, but there is a correction factor given and I am unsure how to apply this. Could someone give advice on this? Please find attached the PDF’s for the bull gear and the pinion gear. They are old drawings! The wear is on the wheel.
It's not easy being big. Maybe that's not exactly how the phrase goes, but it's applicable, particularly when discussing the quality requirements of large gears. The size alone promises unique engineering challenges. BONUS Online Exclusive: Big or Small - Inspection is Key to Success.
The complete Industry News section from the October 2013 issue of Gear Technology.
Below are listed a variety of commonly used constants arranged numerically to permit ease of reference. Wherever an asterisk (*) is shown, the constant is exact as given, it being generally a mathematical constant or one fixed by definition. In cases where the first constant listed is followed by another in parenthesis, the first is the round number generally used, while the second is the more exact value.
Charles Schultz of Brad Foote Gear Works discusses some of the finer points of engineering tolerances--and muscle cars.
The complete Product News section from the October 2013 issue of Gear Technology.
The complete Industry News section from the November/December 2012 issue of Gear Technology.
When parts you manufacture pass through numerous processes such as deep hole drilling, machining, hobbing and grinding, a CMM is essential when your customers require 100 percent in-process and final inspection.
Recent breakthroughs in profile grinding software are helping Anderson Precision Gears and others meet wind power’s insatiable appetite for faster production of large, high-quality gears.
Look beyond the obvious, and you may well find a better way to machine a part, and serve your customer better. That’s the lesson illustrated in a gear machining application at Allied Specialty Precision Inc. (ASPI), located in Mishawaka, Indiana.
The complete Industry News section from the November/December 2013 issue of Gear Technology.
Aerospace/Defense contracts offer unique challenges for gear manufacturers.
The complete Product News section from the March/April 2015 issue of Gear Technology.
The complete Industry News section from the January/February 2014 issue of Gear Technology.
The complete Product News section from the January/February 2014 issue of Gear Technology.
Big gears and wind turbines go together like bees and honey, peas and carrots, bread and butter and—well, you get the idea. Wind isn’t just big right now, it’s huge. The wind industry means tremendous things for the energy dependent world we live in and especially big things for gear manufacturers and other beleaguered American industries.