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Tip identification

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John Stevenson03/03/2015 13:51:56
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5068 forum posts
3 photos

Sorting some tips out yesterday from job lots bought over the years and got these.

Anyone recognise them ?

Doesn't show up very well in the pic but the radius and nose are ground as opposed to just being pressed in a mould.

David Jupp03/03/2015 14:14:40
978 forum posts
26 photos

The code on the box is for a triangular insert - so I guess these have been modified to a 'special' (or are in the wrong box).

JasonB03/03/2015 14:25:31
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25215 forum posts
3105 photos
1 articles

Ninja throwing tips?

Ketan Swali03/03/2015 15:50:18
1481 forum posts
149 photos
Posted by JasonB on 03/03/2015 14:25:31:

Ninja throwing tips?

teeth 2

Ed Duffner03/03/2015 15:58:18
863 forum posts
104 photos

I was thinking Ninja stars when I first opened the thread

Looks like there's a slight taper to the bottom edge on that RH one, Could they be for threading with a special profile .e.g worm gear?

Ed.

JasonB03/03/2015 16:09:35
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25215 forum posts
3105 photos
1 articles

They might do a butress thread. Or would be handy for making your own broaches

Edited By JasonB on 03/03/2015 16:47:00

Brian Rice 103/03/2015 17:20:50
82 forum posts
11 photos

One day one might get a sensible answer on this forum when all the school boy a gone to bed if someone ask a question they expect a descent replay not a load of schoolboy drivel. Rant overangry

Rik Shaw03/03/2015 18:15:01
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1494 forum posts
403 photos

When all the school boy a gone to bed they expect a descent replay - please don't let them down!

Rik (drivelling)

JasonB03/03/2015 18:27:41
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25215 forum posts
3105 photos
1 articles

Well I did give a couple of proper possibilities

Butress form seems to fit quite well with the shape

And if plunged in with the cross slide would cut quite nice teeth for a broach blank, easier to see the similarity in shape when looking at a keyway broach

 

Edited By JasonB on 03/03/2015 19:38:55

Richard Robinson 403/03/2015 20:06:18
1 forum posts

The code is for a triangular turning tool, with chip breaker, in a high grade. (http://www.sandvik.coromant.com/en-gb/products/pages/productdetails.aspx?c=tpmr%20221-53%202025)

They look an awful lot like the shim to go under an internal threading tip to me, and the grey colour also suggest the "lower" grade these shims are normally made from. Example (http://www.shop-apt.co.uk/shims-seats/yi4-shim-for-22nr-22el-threading-inserts.html). Having three points though does make me wonder if they might even be threading tips?

Hope this helps!

Richard

fizzy03/03/2015 20:11:18
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1860 forum posts
121 photos

Im erring on the side of Ninja Stars for very little people, smile p They are definitely for thread type cutting as opposed to general machining but exactly what thread would be impossible to say without measuring one.

Brian Rice 103/03/2015 20:15:30
82 forum posts
11 photos
Posted by Rik Shaw on 03/03/2015 18:15:01:

When all the school boy a gone to bed they expect a descent replay - please don't let them down!

Rik (drivelling)

You picked up on the pigeon English, it was intended.

Neil Wyatt03/03/2015 20:23:32
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19226 forum posts
749 photos
86 articles

Pidgin - but I doubt the schoolboy humour will be lost on JS.

You could use them as pigeon caltraps John, keep the winged rats off the roof

Do look like buttress thread form to me.

Neil

Brian Rice 105/03/2015 17:34:37
82 forum posts
11 photos

Here's the part number for these Sandvik tips

R156.3-22 370, 135 P35 22374

 
Brian Rice 105/03/2015 17:36:38
82 forum posts
11 photos
Posted by Neil Wyatt on 03/03/2015 20:23:32:

Pidgin - but I doubt the schoolboy humour will be lost on JS.

You could use them as pigeon caltraps John, keep the winged rats off the roof

Do look like buttress thread form to me.

Neil

Pigun don't not no what you are meaning

JasonB05/03/2015 17:38:57
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25215 forum posts
3105 photos
1 articles

Brian how did you come up with that code? There is a boxed set on ebay with that code but not teh same shape as Johns?

John Stevenson05/03/2015 17:40:01
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5068 forum posts
3 photos

Close Brian but not quite, those have straight angles sides [ if that makes sense ] probably for ACME.

Mine has curve at the front, curve on the nose and straight on the back.

Probably that special I'll never find out what they are, mind you be happy at £22 a box as i must have 40 boxes or so.

David Jupp05/03/2015 18:14:23
978 forum posts
26 photos

**LINK**

Looks like a standard tip has been ground for a special job. John did mention ground rather than simply pressed.

Brian Rice 105/03/2015 19:20:23
82 forum posts
11 photos
Posted by JasonB on 05/03/2015 17:38:57:

Brian how did you come up with that code? There is a boxed set on ebay with that code but not teh same shape as Johns?

Yes it was flebay

Danny M2Z05/03/2015 20:35:01
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963 forum posts
2 photos

A stylised logo for stamping castings produced here:?

* Danny M *iom.jpg

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