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The Hobby-machinist Die Filer

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On the Table print (#12) you will see a number of mounting holes. They were deemed necessary at the time. In the picture you see only four and they hold the Table rock solid. This is all we will use. The unit just tipped the scales at 40 lbs. The steel parts have not been added yet. I see this Die-Filer coming in at around 100 lbs..

"Billy G"

102_0945 (800 x 531).jpg
 
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The picture before had one corner done at a 1.5" radius. It didn't look in perspective with the table size. I opened it up to 1.750" radius and it is now pleasing to the eye.

"Billy G"

102_0946 (800 x 531).jpg
 
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Today we tackle the center hole in the Table. It's 2.5" diameter thru with a 3.00 diameter counter-bore .125 deep for the Table inserts.

"Billy G"
 
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AN ACCIDENT LOOKING FOR A PLACE TO HAPPEN. That ball is one continuous chip. It's as sharp as any razor blade you can fine and the size of a baseball. It would not hesitate to tear you up. Stop once in a while to clear the drill bit. You won't be sorry.

"Billy G" 102_0947 (900 x 598).jpg
 

wrmiller

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My friend taught me to 'peck drill' or something like that. Small plunges with frequent releases prevents large chips like that. Unless you're using a power down feed of course. :)
 
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Yup, just small plunges. If you are in a hurry, drill it another time.

OK -- the center hole and counter-bore are done (2.5 thru 3.0 counter-bore .125 deep). I need to drill two more mounting holes and I reached my goal for today.

"Billy G" 102_0948 (800 x 531).jpg
 
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These Transfer Screw Sets come in real handy when transferring more than one hole at a time. You can do six at once. The body that holds the punches doubles as the wrench to put them in place. The last pic is the dimples. They are in the red circles. I have many different thread sizes of these.102_0949 (800 x 531).jpg 102_0950 (800 x 531).jpg 102_0951 (800 x 531).jpg 102_0953 (800 x 531).jpg

"Billy G"
 
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I just had a random thought -- what if we added a removable overarm and plunger style blade holder?? Maybe I should stop thinking. :rolleyes:

"Billy G"
 
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Now you've done it. I'm going to make it happen.

"Billy G"
 
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OK -- Done deal. I will just add it to the end of the build.

"Billy G"
 
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Hey Bill,
I was thinking of making the die filer my next project, but found a die filer with a 12 " table, all cast iron, yoke in a closed crank case with oil, table tilts 30 degrees each way, 1/2 hp motor. It has an over arm also. Is $100 a good deal for it?
 
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You stole it.

"Billy G"
 
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Look Ma, no red.

"Billy G" 102_0956 (900 x 598).jpg
 
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He did if it's true, I don't see no steenking pictures :D
The pictures are in my grinder build thread :grin:
( I'm not sure how to take that comment, I hope in jest)
 
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Bill,

Your die filer is really fantastic. I was hoping to build it as my next project , but one just fell in my lap.

I am really impressed with yours though.
 
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Still no bearing material. I went to a piece of Naval Brass I had on hand. It won't heat up enough to cause any problems. The shafts are going to be ground .500 303. One done, two to go.

"Billy G"102_0957 (900 x 598).jpg
 
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ogberi

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Did you use carbide or HSS on that naval brass? I have a chunk that I think a hammerhead is hiding in...
 
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I used HSS. The only time I use carbide is in boring operations. Never on the OD.

"Billy G"
 
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Hot off the machine, this is the final upgrade of the prints. These are correct.

"Billy G"
 

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rwm

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Beautiful. Thank you for sharing the prints.
I see how you intend your yoke mechanism to work now. I was toying with the idea of having a ball bearing on the eccentric shaft running in a larger yoke. Any merit to that idea? I was thinking it might be smoother and quieter.
Mine uses this type of setup:
13%2B-%2B5.jpg
Even though the clearances are tight it can make a racket.
R
 
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That is no different in operation than mine. It just has one more moving part. The more moving parts you have the more noise you have.

"Billy G"
 

Ken_Shea

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Wouldn't it be necessary to shield the motion parts from filings? even a little rubber umbrella of some sort on top should do it.

Thanks for uploading the prints Bill.

Ken
 
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Never gave that a thought Ken. Only time will tell.

This is a Scotch Yoke Mechanism in operation. Notice only Two moving parts, not Three.


"Billy G"
 

rwm

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Wouldn't it be necessary to shield the motion parts from filings? even a little rubber umbrella of some sort on top should do it.

Thanks for uploading the prints Bill.

Ken
Since the files cut on the downstroke the chips head right for the top bearing. It is easy to create a shield for this. Mine uses a felt wiper around the shaft for this purpose. There is also a fitting for dust collection.
Bill- you are probably right that the ball bearing would just add another part and not really contribute. Then again, it may prevent wear on the yoke surfaces and keep the tolerances closer (quieter.) Mine did not get noisy until it wore in a little. It's really not too loud though, just a clickety clack.
R
 
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Don't you have to keep this scotch yoke well oiled? And if so, if it is open, I would think everything would want to stick to it. I know there are open die filers, but never paid any attention to the underside. :concerned:
 
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