Re: gear noise in speed increaser gear set


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Posted by Jack H. on January 20, 2006 at 05:35:14:

In Reply to: gear noise in speed increaser gear set posted by steve green on January 15, 2006 at 11:16:57:

Steve,

We've had noise problems in a parallel shaft, triple reduction set that originated in the high speed set (approx 2000 rpm). On inspection, we found that the largest contributor to the noise was very small knicks and dings on the tooth tips and ends caused during handling of green gears.

Applying a systematic method for material handling to reduce this problem has decreased the reject rate, however, in addition to this, we have added gear honing after surface hardening. This has also helped reduce noise in the set to an acceptable level.

The honing tool was designed to fit on one of our older shaving machines and it is run almost exactly like a shaved part. We modified one of the centers on the machine to have a light braking on the part, which increases friction between the gear and the tool and allows for control of how much material is removed.


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