greensands
Part of the e-furniture
Building a Don Young 5" Black Five
Posts: 409
|
Post by greensands on Dec 5, 2014 14:15:33 GMT
Hi - I have recently acquired a Prolite centre lock insert tool holder with a 1/2" square shank and stamped Pt 9258. A quick search on ebay and the internet has not come up with any results. Can anyone suggest where I might be able obtain some suitable inserts as it looks to be quite a useful accessory for the lathe - Reg
|
|
|
|
Post by ejparrott on Dec 5, 2014 16:28:01 GMT
Depends, what does it look like?
|
|
greensands
Part of the e-furniture
Building a Don Young 5" Black Five
Posts: 409
|
Post by greensands on Dec 5, 2014 16:32:09 GMT
[a href="http://  "]link[/a] |
|
greensands
Part of the e-furniture
Building a Don Young 5" Black Five
Posts: 409
|
Post by greensands on Dec 5, 2014 16:42:46 GMT
[a href="http://  "]link[/a] |
|
|
|
Post by vulcanbomber on Dec 5, 2014 23:12:09 GMT
I dont recognize that tool at all. Try somewhere like GTSS in Coventry, tell them the tool numbers and they should be able to give you a Insert code.
I get the feeling that tool is probably a bit old hat now.
|
|
|
|
Post by ejparrott on Dec 6, 2014 6:59:00 GMT
That's a new one on me, never seen owt like that...Take it to one of the exhibition's when JB Cutting tools will be there, if anyone can find a tip for it it's Jenny!
|
|
|
|
Post by Roger on Dec 6, 2014 7:54:18 GMT
It looks like a chamfering tool to me with no location to prevent it from moving sideways. It's a bit odd that the fixing point isn't central though.
|
|
|
|
Post by ejparrott on Dec 7, 2014 9:34:42 GMT
Possibly, or it might be a left hand turning tool, with a 75 degree approach angle
|
|
|
|
Post by Deleted on Dec 7, 2014 17:47:43 GMT
|
|
|
|
Post by houstonceng on Dec 7, 2014 18:41:23 GMT
I'm sure it's a RH tool, not a left hand. I know some suppliers can't get it correct, but it's so easy to remember.
At the risk of being shot-down in flames by those who already know, a RH Tool cuts on the RH face of the work and a LH - well, you get the picture.
The fact that the tool is angled towards the chuck when the insert is cutting, makes it near impossible to cut as a LH tool.
|
|
|
|
Post by ejparrott on Dec 8, 2014 9:36:13 GMT
No, I don't agree. I have tools that cut to the tailstock when held like that. They cannot cut to a face so I don't quite know what you'd use them for, but they exist. They can be used for facing rings, and we use that style of tool quite a lot on vertical borers - I know them as 'free corner' tools, because they hold and use a corner of an insert not normally used, but they cannot turn to a shoulder.
|
|
greensands
Part of the e-furniture
Building a Don Young 5" Black Five
Posts: 409
|
Post by greensands on Jan 28, 2015 15:01:05 GMT
Updating the current thread I have now been able to find the appropriate tip for the tool but it would seem to have a very limited use in a home workshop. Any ideas as to what use it could be put to? Serves me right I suppose for picking up a "Bargain" tool- Reg [a href="http://  "]link[/a] |
|
|
|
Post by Roger on Jan 28, 2015 15:22:25 GMT
How about facing off, I would have thought it would do that job pretty well? You can also turn it through an angle and use it for creating chamfers. I use a similar one that's set at 45 degrees ie it's set round further than yours for all my facing off.
|
|
|
|
Post by ettingtonliam on Jan 28, 2015 15:23:36 GMT
Well you could certainly use it for facing, and if it was rotated 30 degrees or so clockwise, it would do normal right - left turning. I don't know that it would be my everyday, any job tool, but I could easily find uses for it if it was mine.
I think you'll now have noticed the problem with 'unknown' insert toolholders - the difficulty of finding inserts for them. One of the reasons why I stick to HSS and brazed carbide tooling for the lathe and the planer. Yes I do have a few insert toolholders, but they all seem to take different inserts. The only one I use regularly, and wouldn't be without is the parting tool.
|
|
|
|
Post by Roger on Jan 28, 2015 15:31:23 GMT
Well you could certainly use it for facing, and if it was rotated 30 degrees or so clockwise, it would do normal right - left turning. I don't know that it would be my everyday, any job tool, but I could easily find uses for it if it was mine. I think you'll now have noticed the problem with 'unknown' insert toolholders - the difficulty of finding inserts for them. One of the reasons why I stick to HSS and brazed carbide tooling for the lathe and the planer. Yes I do have a few insert toolholders, but they all seem to take different inserts. The only one I use regularly, and wouldn't be without is the parting tool. Agreed, you have to check for availability and the cost of inserts before buying a holder. I got caught out like that with a superb 65mm facing mill and it took me ages on eBay to finally get a supply of the inserts. It's also worth checking to see if they are reversible, ie can you turn the insert upside down and get more edges per insert. I've got three different holders that take the same inserts at different angles so that's an economical way to use the same ones. I love inserts, they're so convenient, consistent and boy are they tough when you need to cut something difficult. What I like is that you get back to the right geometry every time you need to change them, unlike other solutions that end up with weird and wonderful shapes as they gradually get ground back. I'm a late comer to the insert parting tools and they're good too. I prefer the ones that are designed for light side loads too. They're more useful when making grooves at different widths. |
|
greensands
Part of the e-furniture
Building a Don Young 5" Black Five
Posts: 409
|
Post by greensands on Jan 28, 2015 15:34:11 GMT
Yes, I accept that it can be used for facing operations but cannot of course be combined with the usual task reducing the work piece diameter. One thing in its favour. The insert is double sided and can be used in all 8 positions and so if I can find a use for it, it will earn its keep - Reg
|
|
|
|
Post by andyhigham on Jan 28, 2015 17:30:22 GMT
|
|
uuu
Elder Statesman
your message here...
Posts: 2,808
|
Post by uuu on Jan 28, 2015 17:54:32 GMT
It's quite clear of course, that the use of tipped tools in model engineering is cheating. Any model made with such tools shouldn't be compared with one made with properly obselete equipment.  Wilf |
|
|
|
Post by Roger on Jan 28, 2015 18:13:26 GMT
It's quite clear of course, that the use of tipped tools in model engineering is cheating. Any model made with such tools shouldn't be compared with one made with properly obselete equipment. Wilf Burn the Witches! |
|
|
|
Post by andyhigham on Jan 28, 2015 19:14:59 GMT
You have a good point there. Electric motors are cheating, we should be working on a treadle lathe. It is not in the spirit of model engineering to use a DRO, measurement should be by calipers and steel rule. The only acceptable method of machine lighting is candle or oil lamp.
|
|
