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Old 12-02-2016, 04:58 AM   #1
bazmak
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Default Bazmak-Making the acute tool sharpening system

Just started my next project.I like the look of the acute system and with
information gleaned from Utube etc have sufficient info to make my version
However to play fair with Eccentric Engineering I have bought a set of drgs
for $35.Have made a start with the table as drgs have not yet arrived
Table calls for 150mm sq x 4mm m/s so I used 165mm sq x 5 thk S/S
4 brkts were fabbed from 25x3 angle and 3mm plt,Spacers 25dia alum
M6 allthread S/S screws and although I have ordered a few knobs and clamps
from China I also made 2 ms lever arm screws.Table works well.Now waiting for the drgs before deciding how far to go with the pantograph arm etc and what
changes if any to make.As usual flying by the seat of my pants


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Old 12-02-2016, 02:37 PM   #2
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Hi Bazmak,

I wonder if you have seen this

Link <synthetica.eng.uci.edu/mechanicaldesign101/Kempe-Straight-Line.pdf>

I found it very informative !


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Old 12-02-2016, 11:41 PM   #3
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Default Question on grinding wheels

I am a total novice but I need to look at buying a suitable grinding wheel
On ebay I have seen a 150dia x 25mm wide diamond lapidary wheel
Would this be suitable for light dressing of hss and carbide end mills etc
What grit would be suitable ?.I need to to remove a wheel and guard from my bench grinder and check what size I can physically fit.Any advise would be appreciated Regards barry
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Old 12-03-2016, 11:42 PM   #4
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Weekend is here so hopefully the drgs will arrive tomorrow.Meanwhile I have ordered a 150d x 25w lapidary wheel 240g from china and will also order a 150dia cup wheel say 180g and try to setup both sides of the grinder
I want to set up to simply sharpen drills single facet small sizes I have an er 32 collet set which I can try but I think will be too large so I have in mind to buy
an er16/20 collet set and make a square holder.I think this is a useful thread
for both old (very skilled engs) and young newbies.I think I am in the middle somewhere.Most of us are still learning so please input anything of interest
I liked your post and photo showing the cup wheel setup BARON anymore?
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Old 12-04-2016, 07:53 AM   #5
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Very interested in this bazmak. I have a similar ryobi grinder but with the belt sander on the right hand side.

I have been toying with how to do do a better rest for the wheel side, even looking seriously at the setup described by Harold Hall in "Milling - A complete course" from the Workshop Practice Series #35.

What you are creating looks rather interesting and perhaps a little less involved than Harold's design.
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Old 12-04-2016, 09:53 AM   #6
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Hi Baz,

I did a full build thread on another forum, unfortunately some of the pictures have gone AWAL. The cup wheel is a CBN, 100 mm one with a 20 mm bore and a 5 mm wide face 3 mm thick. It cost me about 10 from China. See <www.banggood.com> I'll see if I can find the PN later. Here it is.

*1 x 100mm Diamond Grinding Wheel Cup 180 Grit Cutter Grinder for Carbide Metal (966954) 9.06

Notice that it describes it as "Diamond" But it isn't. A Diamond one would be much more.

I used a motor from an old tumble dryer salvaged from the local scrapyard. From memory the dryer wasn't very old. I found out much later why I think that it had been scrapped. The drive shaft end had been sheared off.
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Old 12-05-2016, 02:59 AM   #7
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Drawings not yet arrived .Dont know exactly where I'm going yet its all
in my head.I plan to make the pantograph arm and guide rail so will look at
a tool holder to fit the rail.Will try and fit my er32 collet block even though I feel it may be too large.The block is 40mm sq and the nut 50mm dia so I machined a piece of angle to a nice sliding fit for the block and raised 5mm to clear the nut.I then made a shaped end plate drilled and tapped ME
5.5mm x 40 tpi.Made and fitted a brass adjusting screw but this was too slack so added a m3 grub screw with a nylon plug to tension the screw Looks and works well.Next step is to make a swivel plate to fit the intended guide rail
and mount the holder.Will have to wait and see its all in my head
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Old 12-05-2016, 05:51 AM   #8
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My copy of the drawings makes no provision for a collet chuck. The shown holder is from a block of 25mm MS Square.

So my thoughts( it's -1C here and freezing fog!), that I use either a Myford collet set or something with a 'Myford' set up.

Looking at 'Baron's' so called diamond disk, I have something similar but finer to hone tools after grinding. It came from Chronos and lives on the fabricated Stent.

I've been Grandchildren-y German Markets and Chinese lantern displays in Leeds but the holders for tools is either 25mm square or 25mm round.

So Barry might I mention this to remind myself as well to think about necessary alterations. I have a LOT of half inch lathe tooling and cutters of 1/2" mainly.

Hope that your drawings and my post to you finally arrive

Norman
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Old 12-05-2016, 08:21 AM   #9
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Hi Norman,have you watched the various videos on the acute system on Utube
It shows an er16 collet holder for small dias,im hoping the er32 works for
some items if not I might buy a smaller collet set.The er16 is only $30
and its simple to make a dedicated square block.Nut is only $4.Next job is to make the guide rail
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Old 12-05-2016, 08:40 AM   #10
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Hi Barry

When and if Santa Claus finally calls at your door, you should have the drawings for the Brooks tool and cutter grinder which John Moran has mentioned. Whilst the rest of the drawings are of interest etc, the tool holder is a direct crib of the Quorn holder .

Believe me, I have one on my Quorn but obviously the Quorn runs on round bar whereas you will see the Brooks has a flat base. The rest is direct Chaddock.--as you will see- fingers crossed!

Sadly, I am still 'tied up' with a house sale and really little time to enjoy the simple pleasures of U tubes and whatever.

Meantime, it's bl**** cold at -1C and the dogs are frozen to the lamp posts. Never eat yellow snow

Norm


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