| Author |
Message |
    
Steve Savoie
Unregistered
| | Posted on Friday, December 09, 2005 - 02:12 pm: | 
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Ralph Hampton
Unregistered
| | Posted on Friday, December 09, 2005 - 02:16 pm: |
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Oiled felt wipers:
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Gerald_D
Registered
Username: Gerald_d
Post Number: 58
Registered: 11-2005
| | Posted on Wednesday, May 17, 2006 - 03:45 pm: |
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Done some doodling.....
How about a pair of identical plastic blocks to form a sandwich around the wheel? Lower edges hang down longer to prevent carriage from jumping rail. Now to incorporate pockets for felt wipers.............
Who wants to run with this idea? Or shoot it down?  |
rh
Unregistered
| | Posted on Thursday, May 18, 2006 - 06:58 pm: |
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I prefer to see what's going on. Also I reckon to top up the oil in the felt once a month. |
Gerald_D
Registered
Username: Gerald_d
Post Number: 78
Registered: 11-2005
| | Posted on Friday, May 19, 2006 - 08:27 am: |
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Okay Ralph, that looked crude! Here is something neater that folk can turn out on their Bots:
The rectangular holes filled with a felt block. Oil is added down the V-grooves.
The nut that SB uses to hold the V-roller passes through the big hole in the covers. What I sketched above is about the same size as the Hepco cover. If you want my crude .dxf (metric), PM me your mail address please.
Pairs of these, with felt and oil, will....
- Cover the wheels
- wipe the rails
- oil the rails
- and stop the carriage from jumping off the rails
Better now, Ralph?
Afterthoughts:
Instead of taking the V-grooves all the way to the top, stop short from the top and put a cross-hole through there. Then you can oil from the side and the dust won't fall in the top?
For the inner "plate", the one that goes behind the wheel, make the big round hole right through, so that the wheel need not be removed for installation. |
rh
Unregistered
| | Posted on Friday, May 19, 2006 - 03:29 pm: |
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Very good. What I find with mine(they are hidden beneath the moving table) is that I can just wipe the dust off the top and squirt a pool of oil onto the flat top surface and it percolates down the hole into the felt. |
rh
Unregistered
| | Posted on Friday, May 19, 2006 - 03:37 pm: |
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Would it work to have the inner "plate" v thin and the hole 3/8" dia, perhaps with a little boss, so it can act as a "washer" and attach with the wheel. Would probably then need to be steel or ally - but maybe plastic would do. Bear in mind that sometimes they need to be used vertically - on mine I just bored a hole for the oil in the relevant end. |
Gerald_D
Registered
Username: Gerald_d
Post Number: 82
Registered: 11-2005
| | Posted on Friday, May 19, 2006 - 04:06 pm: |
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Pinching them behind the wheel (as a washer) could be a bind. That could affect rail spacing and carriage squareness if the washer thicknesses are not spot-on. (In fact, I set my gantry squareness with shim washers in this area).
When I drew the above, I was only thinking x and y axes - the z-axis is a different animal. (We have doubled up on our lower z-axis rollers, and at max z, the slide actually pulls out of the lowest rollers) |
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