Todays Project - What did you do today?

[dallen]

needed to put a radius on all four corners of a piece of flat bar so I made this cutter to do the job with, it could of been a little deeper but it worked for what I needed to do.
   

[PixMan]

(01-23-2014, 06:32 AM)Mayhem Wrote: Thanks Ken - After I clean up the last thread, would the rest of the thread damage the new nut? If so, I may put it together with the current nut (of which the bottom 50% of the thread is OK). I could then make up a new screw (I would need the mill to cut the key slot).

Measure the screw and all it's features, make a drawing of it and I can make a new one. For a 5TPI Acme thread I'd go borrow the bigger lay-down threading insert holder that Russ has and get a full profile 22ER5ACME insert to thread it, then mill the keyway on my milling machine. With the crew made I could then make a bronze nut to fit it close, adding lubrication ports to prevent the wear that one has.

The set would make a really nice project for me!

[PixMan]

(01-23-2014, 02:36 PM)dallen Wrote: needed to put a radius on all four corners of a piece of flat bar so I made this cutter to do the job with, it could of been a little deeper but it worked for what I needed to do.

Nice job!

Me, I would have simply used a corner rounding cutter (I have a set of inch sized HSS ones from 1/16" to 1/2") and milled both sides of the full radius with it.

How did you get clearance angles behind the cutting edge (if there's any there)?

[dallen]

(01-23-2014, 03:23 PM)PixMan Wrote:

(01-23-2014, 02:36 PM)dallen Wrote: needed to put a radius on all four corners of a piece of flat bar so I made this cutter to do the job with, it could of been a little deeper but it worked for what I needed to do.

Nice job!

Me, I would have simply used a corner rounding cutter (I have a set of inch sized HSS ones from 1/16" to 1/2") and milled both sides of the full radius with it.

How did you get clearance angles behind the cutting edge (if there's any there)?

I would of done the same thing except that I don't have a corner rounding bit with a 5/32 radius.

I used a hex 5C collet block and made three cuts into the drill rod 120 degrees apart then I rotated it a small amount and cut the leading edges, then I went back and recut the relief on the backside of the leading edge, heated it up with a mapp torch and quenched in crisco, didn't want to use lard as it would make it fat like the shop monster, Crisco doesn't stink up the house like motor oil does.

It worked and I only had to make one part which I can finish if i ever figure out the height of blocks I need to stick in the sine vise to get the angle I need for the last cut on the part.

now where did I put the protractor at last time I used it

DAA

[Mayhem]

(01-23-2014, 03:21 PM)PixMan Wrote: Measure the screw and all it's features, make a drawing of it and I can make a new one. For a 5TPI Acme thread I'd go borrow the bigger lay-down threading insert holder that Russ has and get a full profile 22ER5ACME insert to thread it, then mill the keyway on my milling machine. With the crew made I could then make a bronze nut to fit it close, adding lubrication ports to prevent the wear that one has.

The set would make a really nice project for me!

Thanks Ken,

I'm off to the workshop now...

[PixMan]

Spent about 3 hours in the shop today. First I'd stopped over at Wrustle's shop and he gifted me a little bit of aluminum and a chunk of Ø4" steel. I needed the aluminum for some more motorcycle parts, the steel because I may have to make a couple more gear blanks in the near future.

Anyhow, once at the shop I proceeded to take the jaws out of the 3-jaw Pratt-Burnerd Super-Precision chuck on the lathe to clean it. It's been in use since I got it new around 2006-2007, and never been cleaned. I ran the jaws open and removed them, never having done it because it's a reversable top jaw style chuck. WOW, that thing was getting hard to use and now I know why. It seems the Cosmoline or other corrosion resistant coating the maker put on it was into everything, all caked up and dry as a bone. Its at times like this that I wish I had a solvent based cleaning tank. I just don't ever want to have to pay to recycle that stuff.

I took a little more than an hour to clean the mashed in, caked up goop out of the scroll and the teeth in the jaws. Not having a solvent tank to soak the jaws in slowed thing downs, but ny then Neil had arrived and he clean one of the jaws for me. I reassembled using a few drops of Vactra 2 way lube, and now the pinions turn with a lot less effort. The lathe will still need a new nut for the compound slide, a headstock repair, and someday I'll need to rip apart the carriage and apron to clean it's way lube pumping system. It's supposed to feed way lube from the apron to the ways and cross slide via rotations of the carriage feed handwheel, but I fear it's not working. I lube the ways good manually anyhow.

The other jobs were to polish another 0.001" off of Neil's 25mm diameter axle to afford a sliding fit in the bearings. Then I finished a 316SS spacer that I'd started, needing the finish the width, and the finish bore size. Made two 6061 aluminum spacers, Ø48mm O.D. x Ø30mm I.D. x 12mm thick. The chuck sure was a pleasure to use without all the gunk in it now.

[f350ca]

The wrong parts arrived for the differential, the pinion shaft that was broken was updated to a new part that wasn't for this machine, he ended up buying the whole front diff. Couldn't believe it, they had plastic plugs in the holes where the axle shafts go and no seals. Had to tear the old one apart to press out and salvage the seals.
All together and ready to get out of my shop.

[PixMan]

Just curious, but how much of that machine is made by JD and how much is Polaris, Honda, Kawasaki, or some other maker?

[mechman48]

Made a set of jaws to hold small items, thanks to an idea from ieezitin on another thread...

   

George

[stevec]

(01-25-2014, 09:16 PM)PixMan Wrote: Just curious, but how much of that machine is made by JD and how much is Polaris, Honda, Kawasaki, or some other maker?

I'd venture they're ALL made in China and the rabble of employees left in JD North America are pen pushers and bean counters.