Gallery, Projects and General > The Design Shop
Gear Depthing Tool Plans- ideas, suggestions, plans, machining order
BillTodd:
actually it does not matter if the frames are slightly off. as long as alll the holes are drilled one row (x axis) at a time the thing should be accurate :)
chipenter:
Iff the points are sharp you can test by scribing a curve form each end , and there is one line it must be parrallel .
raynerd:
BillTodd, have you by any chance dimensional drawings for that? It looks very much in proportion and would give me a scale to work from.
The next question is brass, steel or aluminium? - brass looks the part but is pricy.
I wonder now if it would be nicer if the depth adjusting screw was now placed more centrally, in the position of the old spring hole perhaps.
Also, I'm just wondering if it would be better to slightly oversize the holes in the runner threaded rods. My thoughts were getting onto reaming these accurate but actually, there job is only to pull the runners against the bearings so having the hole larger would I expect be better, allowing the runner to find its true seat.
Also,could the balls be soldered in position or is this likely to push them out of position slightly with the solder running below them. I would have thought that there wouldn't be a right lot for the glue to stick to.
BillTodd:
--- Quote from: raynerd on May 29, 2014, 03:12:32 PM ---BillTodd, have you by any chance dimensional drawings for that? It looks very much in proportion and would give me a scale to work from.
--- End quote ---
I can make it any size you want :) ATM it's plates are 100mm wide, throat 80mm x 40 ish The spring clip is 50mm long
--- Quote ---The next question is brass, steel or aluminium? - brass looks the part but is pricy.
--- End quote ---
Aluminium might be a bit soft (you don't want the balls digging in too much)
Stainless (say 3-4mm think) would be good
Brass 3/16" - 1/4" would be fancy (and should always be quoted in imperial units! LOL)
--- Quote ---I wonder now if it would be nicer if the depth adjusting screw was now placed more centrally, in the position of the old spring hole perhaps.
--- End quote ---
Yes. it needs a a rotating/hinging mechanism (left & right thread with thumb wheel in the middle?)
--- Quote ---Also, I'm just wondering if it would be better to slightly oversize the holes in the runner threaded rods. My thoughts were getting onto reaming these accurate but actually, there job is only to pull the runners against the bearings so having the hole larger would I expect be better, allowing the runner to find its true seat.
--- End quote ---
Absolutely right :) I need to check that the guide ball spacing is OK and that it wont just ping the balls out when tightened
--- Quote ---Also,could the balls be soldered in position...
--- End quote ---
Why not. Clamp and solder from the hole side should keep any lifting to a minimum.
raynerd:
I've attached some plans that were freely available at some point on nawcc forum. The shape and dimensions on here look good.
Chris
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