Stueeee
Old git
- Messages
- 981
- Location
- N W Kent
I needed a bit of a change from my usual workshop jiggery pokery during the lockdown. And I've been wanting to do this project for a fair while as I think that I'm likely to wear out my welcome quite soon with my partner Sue acting as chief handle turner. The other issue is that even though this roller is made of heavy plate, it does tend to flex a bit when working on steel panels.
I originally mounted my roller on a chunk of RSJ so that I could fit it in a vice to use it, but that's really only OK when working on small bits of metal. So decided to beef up the roller with some welded on RHS, and make a proper stand for it.
One of the slightly irritating things I found using the machine was having to lever up the loose roller to release the panel from the machine; this was because the stock arrangement (in the first photo) just pushed down on the bearing block with an M10 threaded bolt. Also, the top bearing block's M12 retaining bolt had to be left very slightly loose as there wasn't any proper location in the bearing block's slot. So I machined up this chunk of bronze which has a M10 capscrew head captive within it so the forcing bolt now lifts as well as pushes on the bearing block.
To allow the bearing block to slide consistently without excessive play, I bushed down the M12 threaded hole and made a Bronze top hat section retained by an M8 capscrew.
Getting on with the "motorisation", I had picked up a Stannah Stairlift motor a couple of years ago. Stannah wanted £150+ VAT to remove and 'dispose of' the stairlift from a distant relative's house after they died; I offered to remove and 'dispose of it' for free, so, got this powerful 24V permanent magnet motor, with its integral reduction gearbox along with a load of 'come in useful one day' bits and pieces too.
The widget on top of the motor is a magnetic brake, I removed that. The the output shaft rotates at about 18 RPM, too fast IMO for a bead roller, so I decided to gear it down using some old BMC "A" series timing gears, I have built lots of these motors for competition use, so always fit the Cooper 'S' style lightened duplex gears. The sprockets have the same standard pitch as industrial roller chain, so longer chains than BMC used won't be a problem.
You can see in the photo above that I've sleeved down one of the sprockets to fit the 25mm output shaft of the Motor's gearbox. On one of the camshaft gears, I've already machined off the portion of the sprocket that held the rather daft rubber 'silencer/tensioner' that the early A series motors came with. I'll do the other one later; the plan is to use both sets of gears with a jackshaft.
I'll put up some more photos and text as I get on with this.
I originally mounted my roller on a chunk of RSJ so that I could fit it in a vice to use it, but that's really only OK when working on small bits of metal. So decided to beef up the roller with some welded on RHS, and make a proper stand for it.
One of the slightly irritating things I found using the machine was having to lever up the loose roller to release the panel from the machine; this was because the stock arrangement (in the first photo) just pushed down on the bearing block with an M10 threaded bolt. Also, the top bearing block's M12 retaining bolt had to be left very slightly loose as there wasn't any proper location in the bearing block's slot. So I machined up this chunk of bronze which has a M10 capscrew head captive within it so the forcing bolt now lifts as well as pushes on the bearing block.
To allow the bearing block to slide consistently without excessive play, I bushed down the M12 threaded hole and made a Bronze top hat section retained by an M8 capscrew.
Getting on with the "motorisation", I had picked up a Stannah Stairlift motor a couple of years ago. Stannah wanted £150+ VAT to remove and 'dispose of' the stairlift from a distant relative's house after they died; I offered to remove and 'dispose of it' for free, so, got this powerful 24V permanent magnet motor, with its integral reduction gearbox along with a load of 'come in useful one day' bits and pieces too.
The widget on top of the motor is a magnetic brake, I removed that. The the output shaft rotates at about 18 RPM, too fast IMO for a bead roller, so I decided to gear it down using some old BMC "A" series timing gears, I have built lots of these motors for competition use, so always fit the Cooper 'S' style lightened duplex gears. The sprockets have the same standard pitch as industrial roller chain, so longer chains than BMC used won't be a problem.
I'll put up some more photos and text as I get on with this.