Home | Advertise | Subscribe

Magazine | Newsletter | Product Alerts | Blog

July/August 2001

Archive > 2001 > July/August 2001

Download the July/August 2001 Issue in PDF format

Feature Articles

Gear Expo and Fall Technical Meeting - Together Again!
AGMA is looking to boost attendance at Gear Expo 2001 and the 2001 Fall Technical Meeting by "cross-pollinating" the two events.

Great Expotations
Even with some segments of the gear industry facing economic uncertainty, Gear Expo exhibitors and potential visitors are looking forward to this year's show. Instead of focusing on buying and selling, many of those involved with the 2001 show have chosen to focus on the show's value as a marketplace for knowledge.

Technical Articles

Material Properties and Performance Considerations for High-Speed Steel Gear-Cutting Tools
Users of gear-cutting tools probably do not often consciously consider the raw material from which those hogs, broaches or shavers are made. However, a rudimentary awareness of the various grades and their properties may allow tool users to improve the performance or life of their tools, or to address tool failures. The high-speed steel from which the tool is made certainly is not the only factor affecting tool performance, but as the raw material, the steel may be the first place to start.

Measuring Base Helix Error on a Sine Bar
Base helix error - the resultant of lead and profile errors is the measured deviation from the theoretical line of contact (Fig. 1). It can be measured in the same way that lead error on a spur gear is measured, namely, by setting a height gage to height H based on the radial distance r to a specified line of contact (Fig. 2), rotating the gear so as to bring a tooth into contact with the indicator on the height gage, and then moving the height gage along two or more normals to the plane of action. The theoretical line of contact on helical gear must be parallel to the surface plate, which is attained by mounting the gear on a sine bar (Fig. 3).

Stock Distribution Optimization in Fixed Setting Hypoid Pinions
Face-milled hypoid pinions produced by the three-cut, Fixed Setting system - where roughing is done on one machine and finishing for the concave-OB and convex-IB tooth flanks is done on separate machines with different setups - are still in widespread use today.

Departments

Eyes on Detroit (Publishers Page)
If you think of Gear Expo as only a machine tool show, you're not seeing all of its potential. You may be tempted to skip it this year, especially if you're struggling to fill your current capacity. I've heard too many stories of canceled orders, falling profits and slashed budgets to believe that great numbers of you will be attending Gear Expo with buying new machines as your No. 1 priority.

Product News (Product News)
Complete Product News for July/August 2001.

Revolutions (Revolutions)
Welcome to Revolutions, the column that brings you the latest, most up-to-date and easy-to-read information about the people and technology of the gear industry.

Technical Calendar (Events)
Complete Technical Calendar for July/August 2001.

Industry News (Industry News)
Complete Industry News for July/August 2001.

aMAZEing Gear Design (Addendum)
Addendum