Tip identification

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Tip identification

This topic has 20 replies, 11 voices, and was last updated 5 March 2015 at 20:35 by Danny M2Z.

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3 March 2015 at 13:51 #181978
John Stevenson 1
Participant
@johnstevenson1
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.
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3 March 2015 at 13:51 #17635
John Stevenson 1
Participant
@johnstevenson1
3 March 2015 at 14:14 #181983
David Jupp
Participant
@davidjupp51506
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).
3 March 2015 at 14:25 #181984
JasonB
Moderator
@jasonb
Ninja throwing tips?
3 March 2015 at 15:50 #181993
Ketan Swali
Participant
@ketanswali79440
Posted by JasonB on 03/03/2015 14:25:31:

Ninja throwing tips?
3 March 2015 at 15:58 #181994
Ed Duffner
Participant
@edduffner79357
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.
3 March 2015 at 16:09 #181995
JasonB
Moderator
@jasonb
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
3 March 2015 at 17:20 #182003
Brian Rice 1
Participant
@brianrice1
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 over
3 March 2015 at 18:15 #182014
Rik Shaw
Participant
@rikshaw
When all the school boy a gone to bed they expect a descent replay – please don't let them down!

Rik (drivelling)
3 March 2015 at 18:27 #182016
JasonB
Moderator
@jasonb
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
3 March 2015 at 20:06 #182027
Richard Robinson 4
Participant
@richardrobinson4
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
3 March 2015 at 20:11 #182028
nigel jones 5
Participant
@nigeljones5
Im erring on the side of Ninja Stars for very little people, They are definitely for thread type cutting as opposed to general machining but exactly what thread would be impossible to say without measuring one.
3 March 2015 at 20:15 #182029
Brian Rice 1
Participant
@brianrice1
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.
3 March 2015 at 20:23 #182031
Neil Wyatt
Moderator
@neilwyatt
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
5 March 2015 at 17:34 #182244
Brian Rice 1
Participant
@brianrice1
Here's the part number for these Sandvik tips

R156.3-22 370, 135 P35 22374
5 March 2015 at 17:36 #182245
Brian Rice 1
Participant
@brianrice1
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
5 March 2015 at 17:38 #182247
JasonB
Moderator
@jasonb
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?
5 March 2015 at 17:40 #182248
John Stevenson 1
Participant
@johnstevenson1
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.
5 March 2015 at 18:14 #182253
David Jupp
Participant
@davidjupp51506
**LINK**

Looks like a standard tip has been ground for a special job. John did mention ground rather than simply pressed.
5 March 2015 at 19:20 #182264
Brian Rice 1
Participant
@brianrice1
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
5 March 2015 at 20:35 #182271
Danny M2Z
Participant
@dannym2z
A stylised logo for stamping castings produced here:?

* Danny M *
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