The Craftmans Shop > New from Old
Rebirth of a 6 Foot Flail Mower
awemawson:
Ade, I wouldn't want to deprive you of that pleasure, is it in the new building yet?
awemawson:
Not much done this morning as I'm due at the dentist shortly :bugeye:
However I did manage to draw up in Autocad the bearing baffle plates, and cut them from 3 mm zintec steel on the CNC plasma table. For some reason the cut starts are starting on the wrong side of the line giving those little lead ins - doesn't matter really in this situation but I must find some time to investigate the cause - certainly looking at Sheetcam they look good on the screen :scratch:
These baffle are to stop (or probably just reduce!) junk wrapping round the shafts and getting into the bearing seals.
AdeV:
--- Quote from: awemawson on October 28, 2016, 03:01:01 AM ---Ade, I wouldn't want to deprive you of that pleasure, is it in the new building yet?
--- End quote ---
Not yet.... the van's being fixed which is preventing me from moving all the smaller stuff that's right in the way... But I've moved it around loads on the computer screen :) I know exactly where it's got to end up...
DMIOM:
--- Quote from: AdeV on October 28, 2016, 12:19:19 PM ---..... I know exactly where it's got to end up...
--- End quote ---
Somewhere near Battle, East Sussex?
Dave
awemawson:
On with the roller today.
First job, weld up those stub axles and disks and turn them down to be a slide fit in the roller tubing. Sorry no pictures - I forgot :palm:
Then re-fit the skids and the bearings that take the roller so that I can make an accurate final measurement for the length of tube to cut by fitting the stub axles with the disks welded on, and measure between them - 1870 mm which should leave 5 mm end float.
Then cut the tube to 1870 mm - I really do need to make a suitable trestle for the band saw - this sort of Heath Robinson affair made from paint tins and wooden wedges needs replacing :clap:
Then chamfer the inside edge to increase the weld penetration, and tack weld the stub axle / disk 'bobbins' into the tube for a trial fit.
I was happy that the length would be right, but not sure how accurately the axles would be co-axial, which could only be tested putting it in it's bearings - happy to report it spins nicely with hardly a trace of wobble :thumbup:
The tacks had to be light enough to be ground out if the fit was wrong, but strong enough to take the considerable weight and inertia of the assembly when fitting. It survived the fitting, but will also have to survive removal for full welding then a coat or two of paint.
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