Machining rectangular gears?
In the book Five Hundred and Seven Mechanical Movements, Henry Brown shows a
diagram of two rectangular gears (drawing #30) that when meshed together provide varying speed for the driven gear. Anyone have any thoughts or references to a process for producing these gears? I could imagine a single tooth cutter and a dividing head. I suspect that one would have to offset the gear when cutting the corners. From the drawing a least, it appears that each tooth is of consistent depth, so treating it as circular wouldn't really get it. Just curious. -jeff |
Machining rectangular gears?
On Sat, 20 Sep 2003 12:29:05 GMT, "Jeff"
wrote: In the book Five Hundred and Seven Mechanical Movements, Henry Brown shows a diagram of two rectangular gears (drawing #30) that when meshed together provide varying speed for the driven gear. Anyone have any thoughts or references to a process for producing these gears? I could imagine a single tooth cutter and a dividing head. I suspect that one would have to offset the gear when cutting the corners. From the drawing a least, it appears that each tooth is of consistent depth, so treating it as circular wouldn't really get it. Just curious. -jeff Sounds like a job for a shaper. -Carl |
Machining rectangular gears?
Of course as soon as I ask the question I stumble across this
http://www.stirlingsouth.com/richard...evelopment.htm which covers the design and fabrication of elliptical gears. Similar issues I suspect. -jeff "Jeff" wrote in message m... In the book Five Hundred and Seven Mechanical Movements, Henry Brown shows a diagram of two rectangular gears (drawing #30) that when meshed together provide varying speed for the driven gear. Anyone have any thoughts or references to a process for producing these gears? I could imagine a single tooth cutter and a dividing head. I suspect that one would have to offset the gear when cutting the corners. From the drawing a least, it appears that each tooth is of consistent depth, so treating it as circular wouldn't really get it. Just curious. -jeff |
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