Chris's Worthington Brewery Pump

[EricB]

Chris,

Great stuff!

I often have even small round stock spin in the scroll chucks while threading with dies. I figured I was just not tightening enough.

Looks like you're holding the die in a lathe chuck. Do you have that in a tailstock adapter?

Eric

[crueby]

Chris,

Great stuff!

I often have even small round stock spin in the scroll chucks while threading with dies. I figured I was just not tightening enough.

Looks like you're holding the die in a lathe chuck. Do you have that in a tailstock adapter?

Eric

Hi Eric,


Yes, I  used a three jaw chuck on a tailstock adapter since this particular die is too big for my normal tailstock die holders. Rather than take the time to make a bigger holder this was a quick solution. At some point I  will make a larger holder for it. Maybe!   


Sherline has two adapters for the tailstock, one with the smaller thread to take a drill chuck, and a larger one with the chuck thread.

[EricB]

Chris,

Great stuff!

I often have even small round stock spin in the scroll chucks while threading with dies. I figured I was just not tightening enough.

Looks like you're holding the die in a lathe chuck. Do you have that in a tailstock adapter?

Eric

Hi Eric,


Yes, I  used a three jaw chuck on a tailstock adapter since this particular die is too big for my normal tailstock die holders. Rather than take the time to make a bigger holder this was a quick solution. At some point I  will make a larger holder for it. Maybe!   


Sherline has two adapters for the tailstock, one with the smaller thread to take a drill chuck, and a larger one with the chuck thread.

I had acquired one of the 3/4-16 tailstock adapters in a tool lot. I was trying to figure where it would be useful. I have used a chuck as a die holder berfore, but holding the chuck by hand. This is the first use I've seen of that tailstock adapter that makes sense to me.

Eric

[crueby]

Chris,

Great stuff!

I often have even small round stock spin in the scroll chucks while threading with dies. I figured I was just not tightening enough.

Looks like you're holding the die in a lathe chuck. Do you have that in a tailstock adapter?

Eric

Hi Eric,


Yes, I  used a three jaw chuck on a tailstock adapter since this particular die is too big for my normal tailstock die holders. Rather than take the time to make a bigger holder this was a quick solution. At some point I  will make a larger holder for it. Maybe!   


Sherline has two adapters for the tailstock, one with the smaller thread to take a drill chuck, and a larger one with the chuck thread.

I had acquired one of the 3/4-16 tailstock adapters in a tool lot. I was trying to figure where it would be useful. I have used a chuck as a die holder berfore, but holding the chuck by hand. This is the first use I've seen of that tailstock adapter that makes sense to me.

Eric

Thats the one! I left the tailstock clamps just loose on the ways so it could slide as the threading progressed. My usual tailstock die holder is two pieces, a morse taper on a rod, then the holder end that is a sliding fit on the rod so it can  rotate and slide along with the threads. I think the only other time I  have used that adapter was to hold drill bits larger than the 3/8" that the drill chuck would take.

[cnr6400]

  Looking good Chris!

Bent - that "check" pun was almost as bad as some of my puns!    Keep up the good work! 

[crueby]

Looking good Chris!

Bent - that "check" pun was almost as bad as some of my puns!  Keep up the good work! 

I must need a nap, I hadn't even noticed it as a pun!      I need to update my Pun Police algorithms...   

[crueby]

Got a good start on the threaded sections for the check valves. Started with the threads on the end of the hex bars, and cut the slots for the fluid to pass through on the rotary table, 110 degrees and .2" deep on either side of each one, leaving the valve stem guide hole in the center:

and parted off on the lathe, ready to get the second one out of each section. Here is the first on threaded into the valve body:

I decided that I had cut away too wide on the first one, not leaving enough for a good valve seat for the rubber pad, so on the rest I moved it inboard slightly and only took one cutter width, on the first I had widened the slot slightly.

So far I have the first dozen done, six more to go. With the change on the first one, that still leaves one good spare.

Probably will get these last six done this afternoon. After that, time to start in on the valve stems...

[cnr6400]

  Those threaded sections are thin walled! You'd almost think someone was wanting to pass lots of fluid through em... They look great Chris, nicely done. 

[crueby]

Those threaded sections are thin walled! You'd almost think someone was wanting to pass lots of fluid through em... They look great Chris, nicely done. 

Yup - that was part of why I wanted the finer pitch thread, less depth to the thread too. The one I showed is the first one where I made the slot a little too wide, on the rest the wall is a bit thicker.

[crueby]

After a fun lunch out with friends, one more session in the shop got the rest of the herd of  threaded sections completed.   

[PaulR]

That's a lot of work, bet you're glad it's out of the way?

[crueby]

That's a lot of work, bet you're glad it's out of the way?

Sort of, it was an easy sequence and each one did not take long. Lots better than making 100 crawler track plates or drive chain!

[crueby]

And the really quick part of making these check valves, the discs/stems. The discs were turned from a slightly larger diameter bar, drilled for the stems, and parted off into thin discs. The rods were marked and parted next. Next steps will be to loctite the discs onto the middle of the rods.

Probably no more updates till early next week, another big event this weekend to get ready for...

[Kim]

You're making short work of that herd of check valves, Chris! 

Have fun at your big event!
Kim

[EricB]

Will you be lapping all those valves?