What is it

This topic has 15 replies, 8 voices, and was last updated 3 October 2019 at 18:34 by john brown 17.

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2 October 2019 at 18:24 #26869
john brown 17
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@johnbrown17
Advert

2 October 2019 at 18:24 #431502
john brown 17
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@johnbrown17
Any clues please
2 October 2019 at 18:26 #431504
Phil P
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@philp
I dont know but I want one !

Phil
2 October 2019 at 18:27 #431505
john brown 17
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@johnbrown17
Another one?

Edited By JasonB on 02/10/2019 18:32:35
2 October 2019 at 18:33 #431506
Clive Foster
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@clivefoster55965
Looks to be some sort of adjustable offset indexing device although there is no obvious means of holding a workpiece to it. Unless the central screw is simply a blanking plug to protect a threaded bore into which suitable carriers can be fixed.

I had a similar device made many years ago as part of what could be called a laser protection filter test rig so that multiple tests could be made on one sample and damage objectively evaluated.

Clive
2 October 2019 at 18:34 #431507
JasonB
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@jasonb
Could they be some form of slotting tool for cutting internal splines.

Depth of cut on the first one is done like a boring head and the second one would have a similar arrangement. You then index the cutter round for the number of splines required. Drive it in and out on a slotter or manual rack and pinion, maybe even horizontally on a shaper
2 October 2019 at 18:49 #431509
JasonB
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@jasonb
The first looks very similar to one of the Deckle punch milling attachments.
2 October 2019 at 18:54 #431511
john brown 17
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@johnbrown17
Well l have looked at them for weeks,but do think jason is right about the tool for cutting internal splines,as for the other one have not got a clue ,l did think about altering it to use in the tail stock for taper turning,but will se if anyone knows what it is before l play with it.

john
2 October 2019 at 19:19 #431515
JasonB
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@jasonb
Is that small "boring head" ty etool in the second photo actually being held in a collet, similarities to this Aciera accessory
2 October 2019 at 19:24 #431516
old mart
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@oldmart
Clive Fosters first paragraph beat me to the post, its exactly what I would have written.

And Jason B beat me with his thoughts about the second one.
2 October 2019 at 19:29 #431520
john brown 17
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@johnbrown17
Yes jason its held in with a collet,have also got some very small boring bars with it,that go in the head

john
2 October 2019 at 21:39 #431533
peak4
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@peak4
Re, the first one, the table on my Meddings high speed drill sits on a similar boss
This could replace the table, depending on size, and allow a circle of holes at a fixed pcd, adjustable via the dovetail slide.
Is there a sensible number of slots, say 36 to give 10º spacing, or 24 to give a 15º spacing?

Alternatively for holding cutters or saws on a tool and cutter grinder, either for sharpening, or making in the first place.

Bill
3 October 2019 at 06:35 #431561
john brown 17
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@johnbrown17
Yes bill there are indeed 24 slots on the tool,to me it looks like it was factory made ? with its chrome part on it and the finish ,its just knowing what it was for and if it is still of use to anyone before l play with it.

john
3 October 2019 at 13:07 #431618
Bazyle
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@bazyle
First one can also become the basis for an ornamental turning 'eccentric chuck' which might be what you were thinking of doing with it.
3 October 2019 at 16:20 #431644
Bill Davies 2
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@billdavies2
Well, neglecting the small boring head, the second one looks like it could be a cutter grinder attachment. The hex brass piece and the rod through it may be part of the spring-loaded blade for indexing off the cutter, rather than using fixed division plates. For example, if the flutes were not evenly distributed, as in some anti-chatter reamers. When I sharpened cutters, this was the method used, both on new ones being ground for the first time, and for subsequent re-sharpening.
3 October 2019 at 18:34 #431661
john brown 17
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@johnbrown17
Hi bill ,the brass hex piece an rod ,just lock the spindle as you index it ,l think that tool will have a use ,had another look today and it will fit the tee slots on the myford,so could be handy for small boring work,just a thought.

john
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