What is Tip relief radius in Gear data
What is Tip relief radius in Gear data
(OP)
Receive a First acticle inspection for a molding gear, drawing mention in gear data about Tip relief radius , supplier don't what is it , either i.
What is Tip relief radius in Gear data? How to measure this ?
What is Tip relief radius in Gear data? How to measure this ?





RE: What is Tip relief radius in Gear data
On an external gear, it's an external radius, where the tooth is thinned below the theoretical involute profile, outboard of the pitch circle.
I think it's commonly measured with templates, either directly on the gear, or on a profile projector if the gear is small.
More reading here:
https://www.google.com/search?q=tip+relief+in+gear...
Mike Halloran
Pembroke Pines, FL, USA
RE: What is Tip relief radius in Gear data
The shape of a tip relief is not a simple radius profile. It is a curvature that smoothly blends the active involute profile to the tip radius. Most tip reliefs only deviate a few thousandths of an inch from the involute profile over the last 2 or 3 percent of the tooth flank.
The tip relief can be measured with a CMM.
RE: What is Tip relief radius in Gear data
RE: What is Tip relief radius in Gear data
... illustrating another way in which CMMs can waste incredible amounts of time.
Mike Halloran
Pembroke Pines, FL, USA
RE: What is Tip relief radius in Gear data
RE: What is Tip relief radius in Gear data
I would interpret it as a true radius on the tooth tip between the involute face and the outer diameter. Does the specified radius agree with the nominal size of the top lands?
David
RE: What is Tip relief radius in Gear data
RE: What is Tip relief radius in Gear data
What I described previously is a tip break in the form of a radius. (Other tip breaks are chamfers) Not all drawings are as clear on their terminology.
David
RE: What is Tip relief radius in Gear data