The Press Tool, and the Drill Bit Extension !

[Ulma Doctor]

i have a job in the shop that requires a long cylinder to aid in the pressing of bearings onto a shaft, far inboard.
i have gotten away with bludgeoning an a poor, oversized, sacrificial black iron pipe for too many years
the pipe has become less useful, from shortening too many times.
Sure i could, buy another piece of pipe for $10, but it doesn't really have the best ID for my use as a press tool.
this tool is intended for use in the reconditioning of proprietary 10hp 3 phase motors, which i do several times a year.
to justify, the investment of time is worth the lifespan of the tool-
so a decision was made, to make a little time to make baby steps to a full time solution.

in between calls today, i was able to start construction from an idea in my head.
the idea is to drill and bore a 1.390"ID x 8.5" deep hole in a piece of hi grade scrap 60mm low carbon steel about 9.5" long
i intend to leave the tool closed ended and plan to bore to leave about 1" thick on the end.

i mounted the shaft in the Victor 2040.
i parted off the unnecessary features of the old purpose steel and found a nice 34' length hidden inside!!!
(parting on a large lathe is a dream- no machine moaning or power deficiencies here!)

i drilled to 1/4' as far as i could go, then chucked up the biggest bit i had on hand was a 5/8" reduced shank drill.
i drilled to 5/8" as far as i could and then bored to 1.260", leaving material for finishing cuts.
the depth of the holes i have made are insufficient....

i toyed with the idea of constructing a drill extension, that would fit in a 1/2" drill chuck and hold 1/2" tools.
next thing i know, i grabbed some 1" OD 1144 and started to set up for whittlin' on it on the Shenwai 1236
i reduced the stock to .950" and cut the small end to .500"
i chucked the small end and center drilled
i added the tailstock center to the equation and took a skim off the OD of the large end to true it up
i drilled the large end to 15/32"
i bored the socket to .500" ,for a push fit onto a carbide endmill (as a test standard)
i broke all the edges and preped for secondary ops
i mounted the newly turned extension in the vise of the BP and took a .025" cut, to flatten the extension on one side.
i drilled and tapped 2 1/4"-20tpi holes for set screws
i tested the extension fit on a 5/8 S&D drill bit, and it fits snugly
it was time to go home , so i decided to call it a day.

i took a couple pictures before i left of the drill extension.





lastly, the extension mounted in the Victor 2040!



i made a tool to hold a tool, to do something else

i'll take a few shots of the tool progression tomorrow!
same bat channel !!!

 

[mikey]

i made a tool to hold a tool, to do something else

You made a tool to hold a tool to make a tool ... that's what hobby guys do. Nice job there, Doc!

 

[Aukai]

I'm in love with your smallish foot print machine. Nicely done. A 16 x 30

 

[Reddinr]

Nice! I did a hackey version of that for drilling out tall vase centers for my wood lathe. It turned out to be very useful. It was not as well done as yours though.

 

[Winegrower]

Yes, this drill extension trick is a good one, and surprisingly easy. I made a 24” extension for a woodworking project and an 8” extension for my Silver & Deming drills. Doing this solves some problems that are more or less impossible otherwise.

Would love to hear more about the Victor 2040. That is currently my dream machine.

 

[Ulma Doctor]

I was able to finish the tool this morning.
i drilled the final depth and finished bored the socket

i snapped a couple pictures of the finished tool, for your viewing pleasure!





this tool should last for many years to come!
as always,
thanks for looking!