Help!!! DIN 3960, Fhbm, quality control on gears, general info 1

[stijnl]

Dear all,

I'm an automotive engineer, 1 year work experience in vehicle testing and I recently changed job. In this job I'm asked to improve gear noise, as the gears I am talking about are helical gears I'm looking into a so called fhbm value (din 3960). I've seen values that indicate that this value is out of spec...

But I feel my (school) knowledge about gears is not enough, or I forgot to much.. can someone refer me to a good book on gearwheels, send me din 3960 or any other document that could help me to rapidely increase my knowledge? I'm a little left on my own on the job...

It's amazing how less good detailed info you can find about gears

Thank you in advance!!!

 

[stijnl]

correction :
The value I am refering to is fh?m, it's the average helix slope deviation
(I think)

 

[gearcutter]

If you take the time to look; it's amazing how much information you find about gear design on the internet

Ron Volmershausen
Brunkerville Engineering
Newcastle Australia

http://www.aussieweb.com.au/email.aspx?id=1194181

 

[stijnl]

I found a lot of stuff on the internet but only general about fabrication, basic design, evolvente etc.... not so much on the quality control of gears... how do they look different from the ideal profile and what checks are done....

 

[gearcutter]

I have dozens of papers related to the numerous sources of gear noise; all were found on the internet and all were free
Second hand textbooks from EBay and Amazon are also a good source of gear design information.
In answer to your question; it all depends on the accuracy grade required for the application.

Ron Volmershausen
Brunkerville Engineering
Newcastle Australia

http://www.aussieweb.com.au/email.aspx?id=1194181

 

[TVP]

stijnl,

You can obtain DIN 3960 from the official distributor Beuth:

http://www.beuth.de/langanzeige/DIN-3960-Beiblatt-1/en/850140.html

The following are some links to references on gears. Books by Dudley, Drago, and Litvin are especially comprehensive.

General search

http://www.google.com/search?q=heli....4l8l0&oq=helical+gear+quality&aq=f&aqi=&aql=

Computerized Design and Generation of Low-Noise Gears With Localized Bearing Contact

http://gltrs.grc.nasa.gov/Citations.aspx?id=3920

Development of Gear Technology and Theory of Gearing

http://gltrs.grc.nasa.gov/Citations.aspx?id=3349

 

[dinjin]

Ohio State has done a lot of testing of reducing gear noise.
You might want to try them. They are not free however. They offer gear courses on gear noise and how to reduce same.

 

[geesamand]

You might check out this book:

http://books.google.com/books?id=0Y3TAjzoPI8C&printsec=frontcover#v=onepage&q&f=false

David