Gorton 265 d bit grinder overhaul

[steamer]

I checked the workhead spindle after work today and it's barrel shaped by .00035" while the housing bore is worn oval by over .0035"....so its a bit of a mess..   I'll lap the spindle to clean up and straighten the OD and I'm cutting a sleeve for the bore as I type.  1.3125 od and 1.1875 ID    I'll bore the housing out and loctite a sleeve in then finish bore to size in the same set up.    Bore target is 1.2488"  or as near as I can

Pictures coming

Dave

[steamer]

Step 1    make a bushing

Here I have a piece of 1.5" Cast iron bar stock where the OD was turned down to 1.311 and the ID was brought to 1.190

Next I mounted the work held in the lathe such that I had a work head collet gripping a 1/2 inch shank tool heald in a 3 jaw chuck

 I then bored the housing out to 1.311 in small bites.... and I nailed it ....line to line

I added some loctite, but I don't think it was needed.

Tomorrow I'll bore the bearing to final size.

Dave

[Kim]

Here I have a piece of 1.5" Cast iron bar stock where the OD was turned down to 1.311 and the ID was brought to 1.90

Making the OD bigger than the ID is quite a trick!  You'll have to teach me how to do that one, Dave! 

Looks like you're making good headway on it Dave 

Kim

[steamer]

Ahh     1.190....

It's in    the setup moved during install  so I'll need to tram it back in   
Dave

[steamer]

The tricky part is making sure the index pin and index plate are parallel and exactly in the correct position for proper operation before I bring the bore to final size   but I'll need to clean up the OD of the spindle just a touch and see if I can get rid of some of that "barrel" wear of  .00035"...I'm doing my best to bring it back as good as new as it will be far more useful if it's accurate.

[steamer]

<a href="https://www.youtube.com/watch?v=zWhL3umuANA" target="_blank">http://www.youtube.com/watch?v=zWhL3umuANA</a>

Aligning the housing to the spindle axis

[steamer]

<a href="https://www.youtube.com/watch?v=87Fyi2FtVks" target="_blank">http://www.youtube.com/watch?v=87Fyi2FtVks</a>

[steamer]

I ended up facing the index plate as it spent most of it's life being expertly adjusted via Estwing!.....

spindle is tight, but zero slop....so it should be good for my lifetime.

Dave

[Kim]

Making some nice progress, Dave! 

Kim

[steamer]

Making some nice progress, Dave! 

Kim

That was the biggest problem       The rest is in pretty good shape

Dave

[steamer]

Setting up to give the old girl a test grind....just got my AlOx cup wheel....a diamond wheel is coming along as well

[steamer]

OK progress!

Got the wheel mounted and a make shift power cord/switch on the motor, and oiled it all up.

Mounted the freshly rebuilt workhead, and some 1/8" HSS  and ground the end square.ish....  (The light in the area is severely lacking....I'll get to that)

I then turned the head around 90 plus 3 degrees for some side rake and ground a small flat.....

Indexed the head 180 and ground another and they measure the same!   woo hoo!

Observations,

The motor and spindle sound a bit "dry"  though they seem to run smooth.   I'll keep the oil to them for a while as this grinder hasn't turned in 16 years.

Having only indexing for 120 or 90 degress is very limiting.    I'd like to lock the spindle at 3-5 degees either side of that to grind side relief into cutters.....I'll need to come up with something there.

Where this sits in my shop  I CAN"T SEE A DAMN THING!......it will need a small hi intensity gooseneck type light that I can move around and light up the various scales ....

It needs a dresser of some form ....while a single point or even a small fleecing diamond in the workhead would work fine, a swing down dresser is an attractive idea...but we'll see on that..

It is going to need some serious dust collection/control.  I don't need to be breathing this stuff or dumping it all over the shop....Samantha Bell will get upset!


Onward.....not much to see other than the pictures I've taken already, but once I tool the the little thing a bit I'll post some.

Dave

[Kim]

Wonderful!  Seeing the first grind on your 'new' grinder is great progress, Dave! 
You'll get the details worked out

Kim

[Dave Otto]

Sounds like good progress!
I used some 1/2" Loc-Line and a 3d printed adapter to hold the vacuum nozzle on my Clone grinder. I will try to post a photo of it later.

Dave

Photo attached.

[steamer]

Thanks Dave and Kim,    I ordered a LED light and a diamond.    next is the dust collection solution    I like that Dave Otto!

Might be the way I go as well, as I don't use that crevice tool on my shop vac currently.

Gonna "poke around with it today" and see, but it's grinding nicely, so the fit of the work head spindle is at least sufficient!

It's the tightest fit I've ever made....and if feels just like my Levin Tailstock.....almost a ever so slight press fit....

Dave