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High Speed Steel Grinding Jig.

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ieezitin:
Hello guys.
I posted a little while ago asking for tips and ideas on HSS lathe tooling grinding jigs and stuff, the feed back was great and there is a lot of pre-made jigs and machines that will do the job great, so as I did not get my Obama stimulus package in the mail I cant afford pre-made machinery or fancy set ups ill whip up something in the shop.

Lathe tool grinding angles is not an exact science so a simple efficient jig should suffice for the task at hand.

These are my requirements for this build, X Y Z movement of jig,  simple to use, use up what trash I have laying around, its got to be safe,  grind down little bits of tool steel to extract everything out of what I have, also I made myself a boring bar that uses old taps so I want  use up all those little pieces of old taps etc.

If during the build you see something that could improve on what I am doing feel free to share your idea, I will incorporate it into the design.

So!. I will start it off here,

This is the grinder i will be Modifying




I found some 2-½ x 2-1/2x ¼ angle coupled with some ¼ x 2 stainless steel flat bar and an old Craftsman Cross Fence with angle graduations on it. This shot is just laying everything out to get me a visual.



I liked what I saw so to the welding booth I go to slap some metal on it.



This shot is the jig in the vice, I laid all the flat  bar out on the angle iron installed the cross fence and slipped .005 shims in-between the fence so when the steel curls and shrinks I still get the distance right so the fence slides freely.



Well that did not work!. The gap was tighter that a ducks A(&*^s in water, so a little elbow grease with a course file and emery cloth plus a beer I whipped her into shape.



This is it finished lapped, filed and sanded.



More to come in the future.   Anthony

Rob.Wilson:
Hi Anthony

Looking good , very nice clean  welding   :thumbup:  i like the use of the cross fence .

Regards Rob

Bernd:
Anthony,

Rob beat me to it. Very nice bead of weld you laid there. Is it TIG or MIG? I've got a Miller 210 MIG, so was wondering.

Going to follow this one closely since I need to build/modify a grinder also.

Bernd

ieezitin:
Rob, Bernd thanks for the nice comments.

Its TIG, I only tig in the shop as I do not like to grind and chip off slag in the shop with all the machinery around.

I am a pipe welder for my living so it’s a big part of my life, irony is I was a machinist trained back in England but never found it pays well here in the States, since welding was a part of my apprenticeship I made more money welding.

I own a farm here in Maryland so when I was choosing my choice of welder I went for the mobile unit it’s a Miller Bobcat 225Dplus 2 cylinder Duetch diesel. Great machine AC/DC puts out about 280Amps welding, generator is around 8KW. This unit backs up as a power generator when the power fails here which is often.

The nitwits I buy my gas from sent me this time Helium and when you tig with it it runs a little strange and you cant  get down to low amperage without some silly little things happen to you, when I run this bottle of gas out and I get Argon replaced I am going to do a thread on the basics of Tig & Stick welding, it really is easy as I will show.

More pictures tomorrow as I will be first thing in the morning getting back on my project..   All the best.      Anthony

ieezitin:

Hello. I am back on it.

So!. In the picture below I took off the original tool rest angle bracket leaving just the flat bar. This bar is fixed at the bottom via a 3/8-16 piece of all thread and secured by a wing nut and a locking washer, it pivots on the fixture, so I shall utilize this as this will allow me to raise or lower ( Z axis ) the new jig at the same time as either drawing it closer or moving it away.



Now, I want my jig to rotate or swivel in the X axis and Y. So I rummaged around and came up with this little grab bag of stash!



Now by putting these two pieces of square washers on the support bar and having a bolt through them its going to give me a pivot point in the X axis,



So now in this picture you can see my full objective. My two square washers are the base for the Kendorf ( unistruct ) or slide rail ( that’s yellow colored piece of C-Channel ) the odd leg L-bracket sits on the slide rail which is affixed by a bolt through to a grab nut held in the slide rail this allows me travel in the X axis, the L-bracket has a hole on the vertical rise to which the angle iron jig will be bolted too giving me my Y axis movement.



So I slapped it all together, held it with a clamp and I played around awhile making sure it moves as I want it to. Don’t see any problems here so I will break out old sparkey and weld it together.



Here is the result of today’s work the bracket is welded. Tomorrow I am going to drill the hole through the angle jig.

Bye for now.    Anthony.

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