|
|
Post by micro on Apr 14, 2017 10:27:51 GMT -5
Can't you but some kind of power control that the press would plug into to slow it down that way? Electrical stuff is not my strong point.
Why not use a drill bushing say 3/16 inner DIA. Then turn down an end of stock that is precision ground that fits into the bushing with the end ground machined down to the DIA of the bore and again use a normal drill to spin the stock in the drill bushing. That could be made fairly cheap and would be easy enough to make many different size pins to hold the wheel. Then just find a way to clamp a HSS bit as the cutter and make it adjust somehow. This would improve on the DW tool quite a bit.
|
|
|
|
Post by Vitamin K on Apr 14, 2017 10:33:07 GMT -5
Can't you but some kind of power control that the press would plug into to slow it down that way? Electrical stuff is not my strong point. Why not use a drill bushing say 3/16 inner DIA. Then turn down an end of stock that is precision ground that fits into the bushing with the end ground machined down to the DIA of the bore and again use a normal drill to spin the stock in the drill bushing. That could be made fairly cheap and would be easy enough to make many different size pins to hold the wheel. Then just find a way to clamp a HSS bit as the cutter and make it adjust somehow. This would improve on the DW tool quite a bit. Maybe somebody with a lathe and mill setup can build a POC for me?  |
|
|
|
Post by The Zeebzob on Apr 14, 2017 10:38:00 GMT -5
Maybe construct something similar it the wheel shaver...I like the gauge pin and drill bushing idea. You could put a big hand wheel on the other end of the pin gauge giving you the leverage the current design lacks. No electricity needed.
|
|
|
|
Post by Professor Moriarty on Apr 14, 2017 10:46:57 GMT -5
I like the handwheel idea.
|
|
|
|
Post by Professor Moriarty on Apr 14, 2017 10:52:12 GMT -5
Perhaps the hand wheel can also connect to a worm gear to allow a carriage with a cutter to move across the wheel?
|
|
|
|
Post by micro on Apr 14, 2017 11:20:12 GMT -5
|
|
|
|
Post by micro on Apr 14, 2017 11:23:17 GMT -5
You would need multiple stock pieces with different size ends for the various hub DIA. This would be easy to keep everything concentric....and just for you VK CHEAP!
|
|
|
|
Post by micro on Apr 14, 2017 11:25:10 GMT -5
You could even in theory develop specialized shaped cutters to get access to cone the inner and outer hub.
|
|
|
|
Post by Vitamin K on Apr 14, 2017 11:31:53 GMT -5
You would need multiple stock pieces with different size ends for the various hub DIA. This would be easy to keep everything concentric....and just for you VK CHEAP!You know me so well. |
|
|
|
Post by Professor Moriarty on Apr 14, 2017 11:40:43 GMT -5
Makes sense... less moving parts with the wheel moving over a fixed blade.
Whole darn thing should be bolted down to a table... I still like the handwheel idea... maybe the handwheel has threading on it... like the lid of a Masons jar... so it can screw into the jig... moving the wheel across the blade.
Not sure I explained that well.
|
|
|
|
Post by Vitamin K on Apr 14, 2017 11:41:50 GMT -5
You would need multiple stock pieces with different size ends for the various hub DIA. This would be easy to keep everything concentric....and just for you VK CHEAP! What would be needed for the bushing? Does it have to be a hardened steel drill bushing like is used for the drill jigs? Or would just a steel (or maybe a different metal?) bushing with a light coating of oil work? Would the tolerances be tight enough to keep runout down? |
|
|
|
Post by Professor Moriarty on Apr 14, 2017 11:55:37 GMT -5
|
|
|
|
Post by Vitamin K on Apr 14, 2017 12:42:12 GMT -5
I'd be interested in knowing more about those bushing block doohickeys too...IS THERE A MACHINIST IN THE HOUSE? Somebody get Goatboy over here.  Another question that comes to mind about the rod/bushing setup that MB demonstrated: How does the wear work? If the bushing is harder than the shaft, the shaft wears down. If the shaft is harder than the bushing, the bushing wears down. Do we make one one of these parts replaceable? How many good turns do you get before it starts wobbling? |
|
|
|
Post by Professor Moriarty on Apr 14, 2017 13:30:40 GMT -5
That is why I am thinking that bearings need to be involved instead of a bushing...
Betcha the answer lies in these small parts that fellas use to make/ design their own 3D printers and CNC machines...
Some of these machines are quite precise... printing circuits and what not.
|
|
|
|
Post by Professor Moriarty on Apr 14, 2017 13:48:02 GMT -5
I think paired bearing will offer the least amount of runout... unsure though...
It looks like the runout on some of these bearings is extremely small...
We need BSB or Goatboy up in this piece!
|
|
