I am reading this thread with great interest. Unfortunately, my service provider is over subscribed and my system is pitiful, five minutes to load a TU page. Also, I cannot view the video.
I think that I am getting the idea though. The non-return ratchet sounds good, but if the feed finished in between ratchet stops, would this introduce slop in the feed direction.
The play in the bearings sounds huge, OK for playing with food though. The 1/16 'slop' will not double because of the presence of two bearings. The resulting play would depend on the geometry. By locating one bearing close as possible to the business end and the second as far away as possible, the play will be minimised.
I could be way off track not having seen the machine in question. If this is the case, I apologise and you can all have a laugh. Maybe you could e-mail the vid or pic to me.
Thank you for sharring this the one I was making was a lot more complex. Yours is so basic compaired to where I was headed and operates with more precision.
I dont think the play is that bad.
Thank you for sharring this the one I was making was a lot more complex. Yours is so basic compaired to where I was headed and operates with more precision.
I dont think the play is that bad.
Honestly, there isn't any play in this one, as-is.
The play we were speaking of was in theory of using lazy susan bearings for uses other than what they were intended to do.
The existing machine uses piano hinges, good call, I browsed alot of hinges & was surprised how much play/slop was in them, there is some in the piano hinges also, but like what Vodkaman said, the farther you spread it out, the less noticeable it is. (the ones on this machine are @ 8" long)
Vodkaman, I totally get what you're saying & I'm blown away by how you understand without actually seeing the video
PS Sorry kelly, thanks for the info on the bearings, those would work for bass sized plugs, but I'm stubborn & dead set on carving a 4x4 with this
That means the ID needs to be around 5.5 - 6+ inches.
Red - As you say, keep it simple, that feed problem can be solved with a sliding collar (with another bearing !!!),on the square stock, and a bar hooked up to the carriage for the cutting head. As the head returns to start another run, it drags the timber through the chuck and onto the dead center. As the head starts cutting the collar slides back up the timber, ready to lock on and drag another length in.
This collar would be set up on a cantilever system similar to a 'Hi Lift' jack (without all the switches and pins etc). A more simple use of this cantilever principle (what you need), is the one way locking mechanism in a 'Mastic gun' or sliding 'G' clamps.
Saying all this, I never got this far, but that was what I was going to try and use - centering after it comes through the chuck may be a problem (use guides maybe), especially if the stock timber is not strait .pete
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Down HERE, we have to think outside the box.
right right......
this video somewhat demonstrates what I think we're both talking about.
This cnc lathe uses a support bearing to keep everything true, but that where the similarity ends. After watching the machine make it's pass, imagine the bearing locking onto the remaining blank & pulling it into place as the machine resets for the next pass.
try this company for the bearings McMaster-Carr theyve got about everything a guy could want and then some....ive also got info on a high torque variable speed grinder somewhere on this puter..might solve that bogging down problem.
try this company for the bearings McMaster-Carr theyve got about everything a guy could want and then some....ive also got info on a high torque variable speed grinder somewhere on this puter..might solve that bogging down problem.
Thanks,
I love McMaster for those hard to find items, I did see a 6" ID bearing..........
$415.00 ea.
They did have the lazy susan bearings for around $10, but Lowes has em for 3.95
There may be another alternative but you gotta support an 8+ foot blank of wood turning @ 60rpms, otherwise it would look like a jumprope
Red- It's all so simple from this end, always is, when you are not doing it!! Hang in there, you are so close.
I went to the movies for the first time in ages, this afternoon, watched all of them - it's amazing what you can find on the web. Great stuff, you had better bring it with you to Clinton, so we can ogle over it. pete
24 DAYS to GO
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Down HERE, we have to think outside the box.
Red - Are you planning on a simple spring loaded set of teeth like would be used as an anti-kickback device on a tablesaw around the bearing to push the wood through to reset the machine? As the machine resets, the teeth would push the wood into the cutter and stabilize the wood.
Fingers to hold the teeth could be welded to the bearing.
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Bruce
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