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luckwz (Mechanical)
15 Sep 11 22:25
I use the kisssoft to calculate the cylindrical spur gear strength,but don't know where can find the function to calculate the wear safety,pls help me.    
geesamand (Mechanical)
26 Sep 11 11:18
Our gear guy informs me that the AGMA 925 wearing/scuffing calculation is an optional module.  It sounds like you do not have it.

David
gearcutter (Industrial)
26 Sep 11 17:58
The OP is asking for a safety factor for wear.......................which, as far as I know, does not exist in any of the rating standards.
AGMA 925 does not calculate this. The standard does however calculate a probability of wear.
If the OP has a legal copy of the software; I would suggest contacting KISSsoft directly with any questions.
 

Ron Volmershausen
Brunkerville Engineering
Newcastle Australia
http://www.aussieweb.com.au/email.aspx?id=1194181
 

geesamand (Mechanical)
27 Sep 11 12:37
Following those lines of reason, I suspect the OP's customer is asking for the pitting rating.  (In my experience, pitting is considered a mode of wear).  Pitting is of course supported by the major ratings standards.

David
tbuelna (Aerospace)
28 Sep 11 0:39
If the OP is referring to fatigue life when they mention "wear", then KISSoft has separate modules that calculate fatigue life for both tooth bending and surface compressive stress, using Miner's rule.

http://www.kisssoft.ch/english/products/kisssoft_cylindricalgear_furthercalc_lifetimecalculation.php

If the OP is referring to margin of safety in scoring, then there is also a separate module for that:

http://www.kisssoft.ch/english/products/kisssoft_cylindricalgear_furthercalc_agma925.php

Getting accurate results from KISSoft requires detailed inputs for materials, heat treats, and lubricant properties.

Regards,
Terry
luckwz (Mechanical)
29 Sep 11 21:58
Thank you all for the professional answer.I also contact the KissSoft consultant,and get similar answer.attached is some infor mation from them,(not a complete file).we design a set of gear train,and confused what kind of plastic material will be choosed,so we care the wear saftey,I have a limit kisssoft licence,the 'wear along the tooth flank'can not be generate.in the define material window active the wear factor,but the data base were not define for wear calc.How to evaluate 'Safety against wear',>1 is ok?                      
 

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