While on holiday in England during July, my thoughts for this page were on the proposed changes to our tax law, and how they would adversely affect America's industry. But with the President undergoing cancer surgery, Congress deadlocked on deficit reduction and the budget on the back burner, nothing new was being said or done regarding a new tax law
Much of the information in this article
has been extracted from an AGMA
Technical Paper, "What Single Flank
Testing Can Do For You", presented in
1984 by the author
Hobbing is probably the most popular gear manufacturing process. Its inherent accuracy and productivity makes it
a logical choice for a wide range of sizes.
Calculation of gear tooth flexibility is of interest for at least two reasons: (a) It controls, at least in part, the vibratory properties of a transmission system hence, fatigue resistance and noise: (b) it controls load sharing in multiple tooth contact.
This paper presents two new techniques for
aligning and maintaining large ring gears. One technique uses lubricant temperature analysis, and the other uses stop action photography.
Your May/June issue contains a
letter from Edward Ubert of Rockwell
International with some serious questions
about specifying and measuring tooth thickness.
The approximate tensile strength of any steel is measured by its hardness, Table 1. Since hardness is determined by both
chemical composition and heat treatment, these are the two important metallurgical considerations in selecting gear steels.