What are these Hardinge toolholder blocks for?

npinson · Feb 18, 2017

I have several of these types of toolholders from my Hardinge T51 Conquests

They actually came with the one machine that has live tools/C-axis. They fit into the wedge block opening of the turret, if the wedge blocks are taken out. Then bolt to the face of the turret with 4 cap screws

Just not sure what they are for.

Thanks

Npinson

Pinson Manufacturing

Perry Harrington · Feb 18, 2017

I'd wager they are for grooving/cutoff type tools.

ManualEd · Feb 18, 2017

I'd guess they're reducers.
Looks like you can bolt in a wedge on either side for a L/R 3/4" or 1/2" shank stick tool

Ox · Feb 18, 2017

I've had my T51 for nigh 20 years, never seen a holder like that.
Heck, never had need for one like that either .... untill 2 months ago.
I made 2 of my own.

To hold a turning toy 90* from normal for cavity facing app, or .... ???

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Think Snow Eh!
Ox

Vancbiker · Feb 18, 2017

Never messed with a T51, but I've seen similar holders used to get around tailstock body/quill interference issues on other builder's machines.

Tom · Feb 20, 2017

Those are tool holder extensions for clearance on a live tool machine - extends tool out and down to get clearance. Uses the same wedge you remove to install it in tool slot.

Tom

Ox · Feb 20, 2017

Here is pics of the holders that Tom is talking about:

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Think Snow Eh!
Ox

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What are these Hardinge toolholder blocks for?

npinson

Aluminum

Perry Harrington

Titanium

ManualEd

Stainless

Ox

Diamond

Vancbiker

Diamond

Tom

Cast Iron

Ox

Diamond

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