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The Hobby-machinist Die Filer

January Project of the Month [3]
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Bill Gruby

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#31
Bill;

They were done for me by someone else. I was going to have Bill50 do them but this other person had already started them. They were done from my hand drawn prints importing them to a CAD program. These make my originals look amateur.

"Billy G"
 

Bill Gruby

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#32
This is the 3d and hopefully the last upgrade of the prints. I deleted the other two to avoid confusion.

"Billy G"
 

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wrmiller

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#33
Thank you Bill for adding that large radius dimension to the Trunnion drawing. After I said that I could read your prints I was having a hard time figuring what that should be, and figured that it wasn't critical as long as both pieces are the same. That or I'm not as competent at reading these as I thought. :)

That dimension also points me to the centerpoint for the .5" wide arcs as well. It has been a long time since HS drafting class...
 

cjtoombs

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#34
Bill, is drawing number 8, the one marked hand crank parts actually the crankshaft? And if so, what is the stroke?
 

Bill Gruby

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#35
Yes, that crankpin passes thru the yoke. The circular motion is changed to linear motion at that point. The stroke is 2 inches.

"Billy G"
 

Bill Gruby

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#36
On with the show. Today we do the L&R Trunnion Rails. They are mirror images so both will be cut erom the same 6" diameter by 1" thick piece of 6061. AHA, there is something missing on this print. There should be a slot that the locking stud goes thru. We will get that fixed today.

"Billy G"

102_0907 (800 x 531).jpg
 
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Bill Gruby

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#37
4.00 inches done need to get to 5.00. It is just shy of the .562 depth. A skim cut will be taken to insure flatness. The cutting diagram is also shown so the new people can see how to cut mirror images. The darkened area is waste. 102_0909 (800 x 531).jpg 102_0908 (800 x 531).jpg

"Billy G"
 

Bill Gruby

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#39
I can finally breathe easy. The two radii are a perfect match. One cut is finished. Now the 45degree cuts and the locking slots and these are done. Whew !!!! It gets tricky now, if I forget to cut right and left, UH-OH.

"Billy G" 102_0911 (800 x 531).jpg
 

rwm

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#40
Beautiful work. I think I need an assembly diagram to understand those prints. Call me slow!
R
 

Bill Gruby

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#41
102_0913 (600 x 903).jpg Nah, it's a straight forward assembly once all the parts are made. Just the locking slots to go and these are ready to mount. I'm done for the day, it's nice to be retired. :tranquility:

"Billy G" 102_0912 (800 x 531).jpg
 
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Kevinb71

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#42
Looks great so far! It is fun watching your projects come together.

I have just gotten back on the forum as I had some trouble with the new format and then got busy. Where are the plans stored now?
 

Bill Gruby

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#45
All things taken into account, the fit up so far is extremely tight 102_0914 (800 x 531).jpg and spot on.
"Billy G"
 

Bill Gruby

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#46
Today I hope to get all the stuff I have completed so far assembled. This will leave me clear to start the drive components.

"Billy G"
 

Bill Gruby

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#48
Got the slots done on the Rails. They are ready to mount now.

"Billy G"

102_0917 (800 x 531).jpg 102_0918 (800 x 531).jpg
 

Bill Gruby

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#50
Tomorrow will be a real work day. I laid out the holes on the Back Plate today. I want it done tomorrow. Sides and all mounted. I want to start working on the drive Saturday.

"Billy G"
 

Bill Gruby

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#51
One serious piece of Aluminum arrived today, ten days early. .5oo x 24 x 24 and weighing in at 36 lbs. The Table will come from this piece.

"Billy G" 102_0920 (800 x 531).jpg
 

Bill Gruby

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#52
The Trunnions and Rails are done and mounted. I got lucky this time, nothing moved during the match drilling. Whew.

"Billy G"


102_0921 (800 x 531).jpg
 

Bill Gruby

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#53
Drilling matched holes with the drill press is NOT Rocket Science. You just have to know the basics of holding the two or more parts together. I know, the mill is easier but not all of you have one. This is the alternative. Not the two pieces of wood, that is to keep the alignment of the two parts. Again, you do not need a shop full of tools to build, you just need you.

"Billy G" 102_0922 (800 x 531).jpg 102_0923 (800 x 531).jpg
 

Bill Gruby

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#54
Go sloooow and keep checking the drill. If you feel the slightest vibration while drilling the drill is fouled with the chip. Stop and clean it. These five #29 holes took 20 minutes to drill, they are 1 1/2 inches deep.

"Billy G"

102_0924 (800 x 531).jpg
 

Bill Gruby

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#55
The left side is finished and mounted.

Picture #2 here shows an old trick to start the tap straight. Drill the clearance hole in the mating part and use that part as a Tap Guide.

#3 shows it standing alone for the first time. Do your homework and everything drops into place.

"Billy G" 102_0925 (800 x 531).jpg 102_0926 (800 x 531).jpg 102_0927 (800 x 531).jpg
 

jumps4

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#56
Looking good Bill
a lot of work went into just the pivots
there have been a lot of times one of these would have come in handy for me
Steve
 

Ken_Shea

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#57
That really looks great Bill,
Question,
Do die filers back off on the up stroke?

These look like they would be very handy, if I didn't have my bucket full now ...........................
 

Bill Gruby

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#58
No Ken, they don't. Good idea though. Food for thought.

"Billy G"
 

Bill Gruby

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#59
Got to the local Metal Shop and the Tech. School yesterday. They rough cut the Table for me. 24 x 24 is a handful in a small shop. It will measure 14 x 14 inches. It is within .030 now.

"Billy G" 102_0928 (800 x 531).jpg 102_0929 (800 x 531).jpg
 

jumps4

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#60
nice chunk of aluminum
getting materials here in my part of Florida is hard and expensive there is no industry here just tourist attractions.
there is a local recycling shop that was cheap but as interest grew so did their prices.
if you can at the end of the project can you figure your estimated cost?
Steve
 
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