julianf
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- 7,995
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- devon, uk
This is following on from yesterday's question...
Basically a friend wants me to make them a device that is kind of like an old fashioned mangle, for forming clay for pottery (or somthing... I didnt get that far)
Anyway, I'm having trouble thinking up a way to adjust the distance between the top and bottom rollers over the travel required.
Old fashioned mangles, it seems, just used to use deep teeth in their sprockets, so the (minimal) offset variations could be accounted for. But I think they need greater variation.
I thought of having a chain between the sprockets, and then an idler to adjust the tension, but that would just be irritating for adjustment. It would work, but there must be a better way.
This isn't like a cam belt or anything. No positional sync needs to be maintained, only rotational speed sync.
Any ideas?
Basically a friend wants me to make them a device that is kind of like an old fashioned mangle, for forming clay for pottery (or somthing... I didnt get that far)
Anyway, I'm having trouble thinking up a way to adjust the distance between the top and bottom rollers over the travel required.
Old fashioned mangles, it seems, just used to use deep teeth in their sprockets, so the (minimal) offset variations could be accounted for. But I think they need greater variation.
I thought of having a chain between the sprockets, and then an idler to adjust the tension, but that would just be irritating for adjustment. It would work, but there must be a better way.
This isn't like a cam belt or anything. No positional sync needs to be maintained, only rotational speed sync.
Any ideas?