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View Full Version : Deckel cutter grinder use?



Bob Quale
03-02-2005, 03:17 PM
If grinding a square cutter like for a lathe, and using a cutter grinder, like a Deckel, how do you cut the right side relief angles? Just for clarity, it would seam the cutter would have to be turned upside down?

Then, how do you hold it? Do you have to find a square collet?

Thanks Bob

Norman Atkinson
03-02-2005, 06:11 PM
BOB!

There are more T&C's which cannot be reversed than you would believe.

My Clarkson hasn't got square collets.
Simply find a suitable bit of round bar to fit your holder. Mill a say 1/2 slot in it and tap for 3 2BA grub screws. Rotate your tool for each face.With the next bit of bar, drill various round holes to fit your cutters- and then tapered ones to fit your MT stuff and whatever.
Then you put a jacobs chuck on another bit- and do 4 facet drill sharpening.

Pas de Probleme?

shaque
03-02-2005, 06:24 PM
Now Norman, there is a bit of advise to put in the tips book...
Jim

Rustybolt
03-02-2005, 07:47 PM
<font face="Verdana, Arial" size="2">Originally posted by NORMAN ATKINSON:
BOB!

There are more T&C's which cannot be reversed than you would believe.

My Clarkson hasn't got square collets.
Simply find a suitable bit of round bar to fit your holder. Mill a say 1/2 slot in it and tap for 3 2BA grub screws. Rotate your tool for each face.With the next bit of bar, drill various round holes to fit your cutters- and then tapered ones to fit your MT stuff and whatever.
Then you put a jacobs chuck on another bit- and do 4 facet drill sharpening.

Pas de Probleme? </font>


A very cunning plan.

Norman Atkinson
03-03-2005, 04:06 AM
HI Shaque!

I hadn't seen your comment until I wrote a long rambling(?) reply to Jim Swanson.
Really, there is nothing new in all of this.
It was simply a helpful reply to a member- now 2- who is treading the same path but in this instance- a little way behind.

I realise that many of the T&C handbooks don't do it but I cannot take any credit for copying people who can make rings around me.

Norman

Norman Atkinson
03-04-2005, 03:43 AM
Hi Bob and Jim,
I hope that Bob's screw cutting tool is satisfactory.
I recommended that Bob obtain Martin Cleeve's Screwcutting in the Lathe- Argus MAP and went on to suggest George Thomas's Model Engineers Workshop Manual.

Since then Google gives a picture or two of Deckels. There is a copy currently available- from Chronos. Worth having a look at.

As the Deckel is a swing grinder the nearest available information comes from Professor Dennis Chaddock's book on the Quorn. Rumour has it that Chaddock copied the Deckel.

Bob, you have quite a toy!!!!!!

Bob Quale
03-04-2005, 05:57 PM
Norman,
Not the toy you may think! I have a cheaper Chinese clone, but it has all the assesories, end mill sharpener, one inch square tool holder, drill sharpener and R8 index. It works right out of the box, but needes a little work, as all the Chinese stuff does. All in all, I am pleased with it and can make some cutters that I otherwise would not be able to. If any one is interested I could give some pics and my personal opinion.

This is the one I have, I just got it about two weeks ago.

http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=45707

Norman Atkinson
03-05-2005, 12:27 PM
I assumed that there was not an easy method of accessing information. The last Deckel that I saw was simply an unused addition to a series of extensively tooled workshops which could be turned into a factory immediately should another war break out.
This was some 30 years ago!

The information given was literally off the top of my head and given with the best possible motives.

Now, the tool is a Chinese clone and is currently available in both the USA and now the UK.

I would have thought that in the first instance an approach for information should have been demanded from the supplier!In the second instance,clear details of the tool and the extent of earlier enquiry should have been available.

Norman Atkinson
03-07-2005, 01:40 PM
I've just marked Jim Swanson's "homework".

That is one fiendish tool holder he has made for his T&C grinder.

Watch for exhibition quality work from him in future.

shaque
03-07-2005, 08:55 PM
Norman, you are making me blush http://bbs.homeshopmachinist.net//redface.gif
Anyhow, thanks to you, I can now use my cincinatti #2 t&c grinder to make almost perfect tool bits for my SB9 lathe. The first bit I done was for cutting to a shoulder, and I was able to make 60 thou cuts, unbeleivable. I was never able to do that before. Next on the list of to do is a facing bit, then a threading bit then a.......... Oh well you get the idea
Ok, I will try to post pictures of Normans idea, and what I did with it, so here goes...
http://img.photobucket.com/albums/0603/shaque/DSCF0017.jpg
this is the holder
http://img.photobucket.com/albums/0603/shaque/DSCF0019.jpg
http://img.photobucket.com/albums/0603/shaque/DSCF0019.jpg
http://img.photobucket.com/albums/0603/shaque/DSCF0020.jpg
http://img.photobucket.com/albums/0603/shaque/DSCF0056.jpg
this is one of those why didn't I think of that things.
Jim

By the way, these are all staged shots for clarification, and yes I do use the wheel guards, safety glasses etc...

[This message has been edited by shaque (edited 03-07-2005).]

Bob Quale
03-09-2005, 05:34 PM
The instructions with the machine are weak! As with most of the chinese stuff. If I had a scanner I would scan and post them for you all to laugh. Their instruction only talk about grinding the left side of the cutter, never the right? But of course it can be done.

Now, I just have to find a way to add coolant to speed thing up!

Thanks for the help!

Bob

Blackadder
03-10-2005, 01:16 PM
Bob how are the copy grinders at sharpening end mills , the ends and the helix ?

Bob Quale
03-10-2005, 06:11 PM
Blackadder,

I have to tell the truth, I have not done end mills on it, I use my surface grinder with lots of coolant, and just do the ends.

The attachment for end mills does look good.

Bob

Blackadder
03-11-2005, 02:28 AM
Thanks Bob

our supplier in the Uk ( the grinder is 980 quid here ) has said that the end mill holder is dificult to use , if fact he talked me out of a sale

Norman Atkinson
03-11-2005, 03:52 AM
Sent you an E-Mail.
Assumed you were on the other side of the pond

Slackbladder