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Gallery, Projects and General => Member Videos => Topic started by: Jim Dobson on June 24, 2024, 02:42:20 AM

Title: Metal Lathe Centering Roller Tool for chucked item
Post by: Jim Dobson on June 24, 2024, 02:42:20 AM
Metal Lathe Centering Roller Tool for chucked item

A simple idea how I quickly center up small pieces of offcuts. Not saying this is how anyone else should do it, but it works accurately for most of the work that I do. It doesn't replace your Mitutoyo dial indicator for super accurate work, but as I say in the video its quick and easy.
Hope it helps someone out.

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Title: Re: Metal Lathe Centering Roller Tool for chucked item
Post by: efrench on June 25, 2024, 12:31:42 AM
Have you tried using it as a burnisher?
Title: Re: Metal Lathe Centering Roller Tool for chucked item
Post by: Jim Dobson on June 25, 2024, 12:35:47 AM
Have you tried using it as a burnisher?

No I haven't but I can see after thinking about it that you could.

 :beer:
Title: Re: Metal Lathe Centering Roller Tool for chucked item
Post by: philf on June 25, 2024, 12:25:09 PM
I thought of trying mine to burnish items. I'd angle it by a degree or two. I may try it later!

I've seen designs for a burnishing tool using a ball race and a ball bearing but burnishing couldn't get anywhere near a corner.

My version of the Centering Roller has two bearings so that I can nudge things in X & Y without removing it from the toolholder.
Title: Re: Metal Lathe Centering Roller Tool for chucked item
Post by: Jim Dobson on June 25, 2024, 07:02:28 PM
I thought of trying mine to burnish items. I'd angle it by a degree or two. I may try it later!

I've seen designs for a burnishing tool using a ball race and a ball bearing but burnishing couldn't get anywhere near a corner.

My version of the Centering Roller has two bearings so that I can nudge things in X & Y without removing it from the toolholder.

Be interesting Phil to see how it works for you if you try it.
Title: Re: Metal Lathe Centering Roller Tool for chucked item
Post by: philf on June 26, 2024, 08:46:03 AM
Jim,

I did try it but only on a piece of stock Al alloy. (As extruded).

I ended up with a nice round piece with a smooth surface and it only seemed to make about 0.01mm difference to the diameter. (Not that the original was perfectly round.)

I'll repeat and take some photos.

Phil.
Title: Re: Metal Lathe Centering Roller Tool for chucked item
Post by: Jim Dobson on June 26, 2024, 04:31:26 PM
Thanks Phil, appreciated.