Project of the Month built by mayhugh1

Help Support Home Model Engine Machinist by donating using the link above or becoming a Supporting Member.
Home Model Engine Machinist > The Tools and Tips > Tools > Bazmak-Making the acute tool sharpening system

Reply
 
Thread Tools
Old 02-21-2017, 10:55 AM   #111
BaronJ
Grumpy Old Git.
 
BaronJ's Avatar
 
Join Date: Dec 2013
Location: Yorkshire, UK
Posts: 593
Liked 215 Times on 181 Posts
Likes Given: 73

Default

Hi Barry,

Looking good. Nice edges on that slot drill. Its the flutes that are hard to do


__________________
Regards:
Baron.
BaronJ is offline  
 
Reply With Quote
Old 02-21-2017, 11:53 AM   #112
bazmak
BAZMAK
HMEM_SUPPORTER.png
 
bazmak's Avatar
 
Join Date: Dec 2012
Location: adelaide south australia
Posts: 1,652
Liked 846 Times on 497 Posts
Likes Given: 688

Default

thanks Baron,no intension of doing flutes just trying to get more life from my cutters.I have a cheap set of 2 and 4 flute endmills next step is to try to grind all of them.Getting there


bazmak is offline  
 
Reply With Quote
Old 02-21-2017, 05:27 PM   #113
goldstar31
 
Join Date: Feb 2010
Posts: 1,400
Liked 303 Times on 257 Posts
Likes Given: 485

Default

Ah! Flutes-- and spiral ones at that!

Years ago, someone gave me a taper turning attachment apparently specific for grinding flutes and such things as Morse taper shanks and sic blether. It was rusty then - and more rusty now.

I've looked at it several times and thought that the 1" round steel would come in handy.

Don't get me wrong, I possibly have most of the necessary gadgets on my Clarkson but getting a gift of an air spindle is too much to expect-- and rather difficult to make- on home workshop equipment.

Probably a wallet spanner would be a more worthwhile acquisition

Norm
goldstar31 is offline  
 
Reply With Quote
Old 02-21-2017, 07:21 PM   #114
Blogwitch
Ex Bogstandard
HMEM_SUPPORTER.png
 
Blogwitch's Avatar
 
Join Date: Dec 2008
Location: Crewe, UK
Posts: 3,463
Liked 627 Times on 467 Posts
Likes Given: 62

Default

The main problem with grinding the flutes on any cutting tool is that you usually end up with a non standard cutter.

OK if you want a special sized reamer (D-bits can do that job) or milling cutter, but other than that, they are as much use as a lead balloon, they require a lot of extra calculations and measuring (and getting them re-marked up) if you are going to use them.

Better to do as Baz is doing, just extending the life of normal cutters.

I had to look at that way of doing things before I purchased my small 12" cube dedicated milling cutter sharpener instead of a large T&G grinder with all it's complicated setup tools, I decided it just wasn't worth the extra effort to grind flutes of milling cutters.

As Norm said, a wallet spanner sorted mine out.


John
__________________
If you don't try it, you will never know if you can do it!!
Blogwitch is online now  
goldstar31 Likes This 
Reply With Quote
Old 02-22-2017, 01:55 AM   #115
bazmak
BAZMAK
HMEM_SUPPORTER.png
 
bazmak's Avatar
 
Join Date: Dec 2012
Location: adelaide south australia
Posts: 1,652
Liked 846 Times on 497 Posts
Likes Given: 688

Default

I made a 25mm sq collar for the 16dia cutters
A 25 sq toolholder for 12mm cutters
The er16 collet holder does 1mm to 10mm
and the er32 collet holder does 20mm max down
Ready to start a sharpening production line but it might have to wait awhile
as I am expecting my DRO delivery and that will take priority.see my thread
bazmak is offline  
4
People Like This 
Reply With Quote
Old 02-22-2017, 08:18 AM   #116
goldstar31
 
Join Date: Feb 2010
Posts: 1,400
Liked 303 Times on 257 Posts
Likes Given: 485

Default

As a younger and uncouth generation would say 'Very Tasty'

My progress has been marred- yet again. I fixed the 4 way ML10 turret onto the lathe only to find that it wouldn't accept anything more than about 6mm. It was a full 1/8th 'out' and if I was to get it to fit, I had to machine it down-- but there was a spring peg for the ratchet in the way. Fished out my never used OEM turret on the Super 7 and guess what- it was the same .

Given time( ?) I might get the Acute thing built

Merde
goldstar31 is offline  
 
Reply With Quote
Old 02-23-2017, 12:19 AM   #117
bazmak
BAZMAK
HMEM_SUPPORTER.png
 
bazmak's Avatar
 
Join Date: Dec 2012
Location: adelaide south australia
Posts: 1,652
Liked 846 Times on 497 Posts
Likes Given: 688

Default Final chapter on this thread

When I first bought the mill I bought a cheap boxed set of HSS end mill
containing 5 each of 2 and 4 flute end mills.With little use on mild steel
they quickly lost there edge or chipped.They worked well in alum,brass and CI
so I kept them in reserve and when cutting mild steel I used carbide to rough out with a light final cut to square out the corners.This exercise is to try and refurb as many as I can
I bought a cheap set of small diamond Dremel style wheels and set up in the lathe to grind the centre relief by hand and eye.Works well on the small end mills but too thin for the larger ones
Using the eccentric and my systems I proceeded to grind all sizes.Partial success.The 6mm 4 flute were unsuccessful due to my poor eyesight and the fact that they were well worn.The 2 flute was partial successful
It became easier as the endmill size increased.Where possible I will now buy
larger 2 flute carbide slotcutters/endmills and accept the 6mm and smaller as throwaway.I will limit the use of larger HSS for special occations etc and use mainly 2 flute.The eccentric system is now finished and works OK with a couple of extra tool holders to be made as required
bazmak is offline  
sergulbka Likes This 
Reply With Quote
Old 02-24-2017, 07:07 PM   #118
Stieglitz
 
Join Date: Aug 2012
Posts: 45
Liked 8 Times on 8 Posts
Likes Given: 9

Default

Hi Bazmak, Great job thanks for sharing.
Allen.
Stieglitz is offline  
 
Reply With Quote
Old 02-25-2017, 10:18 AM   #119
stragenmitsuko
 
stragenmitsuko's Avatar
 
Join Date: Jan 2016
Posts: 100
Liked 44 Times on 25 Posts
Likes Given: 6

Default

Nice work and it was great to see the system evolve .
Thx for sharing indeed .
Pat
stragenmitsuko is offline  
 
Reply With Quote
Old 03-15-2017, 10:16 AM   #120
goldstar31
 
Join Date: Feb 2010
Posts: 1,400
Liked 303 Times on 257 Posts
Likes Given: 485

Default

Hi Baz( et al)

I've been looking for resin- resin. Old fashioned stuff to stick on abrasive discs. Eventually found a local branch- where earlier bought a CBN wheel. There is a lecture on tool grinding but I'm destined for the dentists chair.

So in a roundabout way, the tool firm is selling stuff from a firm called Veritas. Oddly, they have a tool rest and grinding jig 600321 which is the basis( or so it seems) of the Acute grinding system. Veritas is international with outlets in Oz amongst other places.

Nope, the firm here is out of stock but thought you( and others) might be interested!

Regards

Norm


goldstar31 is offline  
 
Reply With Quote
Reply


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Bazmak-Making simple cheap milling cutters bazmak Tools 6 04-17-2016 04:09 PM
making extra QCTP holders for a2z cnc system. MCRIPPPer A Work In Progress 8 09-18-2013 12:12 AM
Tool sharpening in the UK Blogwitch The Break Room 0 03-15-2012 09:19 AM
Belt sharpening system Omnimill Tools 2 03-02-2012 03:31 PM
Thinking about making an oxy-hydrogen system for use in the shop. Kaleb Tools 24 05-31-2010 02:46 AM



Newest Threads






- Top - Member List