Gallery, Projects and General > The Design Shop
Bevel Gear Mill
mattinker:
I take it you've seen this:-
http://www.eurospares.com/graphics/Tools/shapers/shaper%20gear%20cut.pdf
vtsteam:
Nope Matt, I haven't. Very interesting, and that must be the Model Engineer/metal tape reference made earlier. I wonder if the same idea could be applied to a fly cutter on a horizontal mill (or on a lathe with boring table)?
mattinker:
The shaper is easier than a mill because of the cut direction in relation to the table travel! Have a look at this video!
vtsteam:
Yes, but we'd have to make the shaper, and do that with a vertical slide.
A horizontal mill without vertical feed is easier to make.
And a boring bar between centers on a lathe (with a boring table) is simpler even than that.
djc:
--- Quote from: vtsteam on August 23, 2020, 02:01:34 PM ---...I wonder if the same idea could be applied to a fly cutter on a horizontal mill (or on a lathe with boring table)?
--- End quote ---
Yes it can. It is just a means of getting co-ordinated linear and rotational motion. It is no different in concept to using gears from the mill leadscrew to drive a dividing head for helical milling. Does the same thing without the gears.
As to the machine, have a good sniff around the internet archive for gear-cutting books. There are many old ones now online and being in US, you have better access to Google books than we do.
The classic bevel gear people are Gleason and Bilgram. You can find all their patents online and you can probably find operation manuals for some actual machines at vintagemachinery.org .
You can get some good leads if you put 'bevel gear planer' and 'bevel gear shaper' into Google and look at images. E.g.
https://www.homemodelenginemachinist.com/threads/bilgram-bevel-gear-generator.9042/
https://www.practicalmachinist.com/vb/antique-machinery-and-history/bilgram-bevel-gear-attachment-342628/
See also:
http://vintagemachinery.org/mfgindex/detail.aspx?id=2969&tab=7 (mentions Woodbury's book - well worth reading)
http://blacksmithandmachineshop.com/a-My-Foot-Hand-treadle-powered-Machines-in-My-Shop-Collection.html (Brown & Sharpe #13H extract from American Machinist)
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