At the present time, technology seems to be moving faster than our ability to educate people in its utilization. this is particularly true of the manufacturing engineering profession.
Since we are a high volume shop, we were particularly interested in Mr. Kotlyar's article describing the effects of hob length on production efficiency which appeared in the Sept/Oct issue of Gear Technology. Unfortunately, some readers many be unnecessarily deterred from applying the analysis to their own situations by the formidabilty of the mathematical calculations. I am making the following small suggestion concerning the evaluation of the constant terms.
I received a letter from Mr. G. W. Richmond, Sullivan Machinery Company, N.H., in which in addition to correcting
mistyping, he made several suggestions
concerning my article "General Equations
for Gear Cutting Tool Calculations."
As I travel around the country visiting with many of our customers, I am finding that not only are we, as an advertiser in the journal, meeting our advertising needs, but you are also meeting those very high ideals that you put before us during that meeting.
One of the current research
activities here at California State University at Fullerton is systematization of existing knowledge of design of planetary gear trains.
Your May/June issue contains a
letter from Edward Ubert of Rockwell
International with some serious questions
about specifying and measuring tooth thickness.
In response to Ed Uberts letter, we have come a long way in gearing since WWII. The Europeans do use long
addendum pinions in many cases. This modification does improve load capacity, sliding conditions and the working life of a gearset. When modifying a pinion tooth it is
necessary to modify the gear tooth or adjust the center distance accordingly but we will leave that to the designers.
This letter is in response to your article
asking the readers where their interests
lie. The division of Rockwell International where I work has engineering departments in Cicero.
The cost of teaching salesmen the ins
and outs of gearing has proven to be expensive. Your journal is Just what we
have been looking for. We found your
article on lubrication analysis on gearing
very interesting. More on the basics and
more on lubrication would be appreciated.
Gear research seems to be thriving. Between September 10th and October 17th, 120 papers about gears
were presented at three conferences in Milwaukee, Boston, and Washington, to a total audience of about 400. The authors were from nine countries. Slightly more than half of the papers were prepared by authors who
live outside the US and Canada.