Spiroid,Globoid Gears
Spiroid,Globoid Gears
(OP)
Could someone help me about the spiroid and globoid gears.
can we used them instead of hypoid gears. what are the advantages and disadvantages, including design and manufacturing...
The papers i've been looking so far (most of them are Russian) claming that they would be much more efficient and cheap?! basically it looked like a worm gears, and there should be too much sliding so heat generation. I;ll apprciate if someone can help me on the issue (for automotive applications)
can we used them instead of hypoid gears. what are the advantages and disadvantages, including design and manufacturing...
The papers i've been looking so far (most of them are Russian) claming that they would be much more efficient and cheap?! basically it looked like a worm gears, and there should be too much sliding so heat generation. I;ll apprciate if someone can help me on the issue (for automotive applications)





RE: Spiroid,Globoid Gears
Lester Milton
Telford, Shropshire, UK
RE: Spiroid,Globoid Gears
To a casual observer, a Spiroid and a Hypoid look similar, since the shaft axes are non intersecting and both have similarly tapered pinions. However, Spiroid gears have a primarily screw action, whereas Hypoids have a primarily rolling action. The pinion of a Spiroid set resembles a worm, but Spiroids are more efficient. So they tend to fit somewhere between worms and bevels. They are best used for things like positioning drives - the minimum possible ratio is about 10:1, so they are not an appropriate choice for a typical automotive rear axle. Just as Gleason introduced the Hypoid, I think it was ITW that invented the Spiroid. See http://www.itwspiroid.com.
Globoid gears, on the other hand, are supposed to be very efficient, and are touted as being ideal for automotive applications that currently use hypoids. See http://www.zakgear.com/Condrive.html for example. But I don't know much more about them than that. I hope that "hype" - oids is not also a good description for Globoids.
RE: Spiroid,Globoid Gears
RE: Spiroid,Globoid Gears
http://www.stepanlunin.com/
For globoid gears do to
http://www.zakgear.com