Todays Project - What did you do today?

[EdK]

(11-29-2014, 05:54 PM)stevec Wrote: Ed, no cracks about slipping through the cracks please.      


SteveC

Good one Steve.

Ed

[PixMan]

Wow, I'd never seen a failure of a drill like that before but that's a perfect example of why we should wear safety glasses anytime a tool is in the cut.

Now if I could just get me to listen to me.

[PixMan]

Version 2 of a gun sight part for dallen. He asked me to make the cylindrical sections 1/4" longer on each end. This time I milled the first side round along with the oval shape (with angled flat) and the .03" radius notch in the first operation before going to the lathe for the second side. Turned the second side, bringing in the face of the .250" wide oval, added the Ø 0.315" bore. Back to the mill for the Ø 0.251" reamed hole and the 0.151" wide slot through. The slot seemed to come out at about 0.1535"-0.154", so I'll compensate on the mating part width.

Near enough to perfect for me, hope it's good enough for dallem.

[dallen]

(11-30-2014, 05:21 PM)PixMan Wrote: Version 2 of a gun sight part for dallen. He asked me to make the cylindrical sections 1/4" longer on each end. This time I milled the first side round along with the oval shape (with angled flat) and the .03" radius notch in the first operation before going to the lathe for the second side. Turned the second side, bringing in the face of the .250" wide oval, added the Ø 0.315" bore. Back to the mill for the Ø 0.251" reamed hole and the 0.151" wide slot through. The slot seemed to come out at about 0.1535"-0.154", so I'll compensate on the mating part width.

Near enough to perfect for me, hope it's good enough for dallem.

Ken
That looks to me too be about as perfect as it could be made, and a heck of a lot better then what I could do with what I have.


THANKS
DA

[PixMan]

Glad to be of help. Your call on if I ship this to you or wait until next weekend when I attempt the mating part.

[dallen]

(11-30-2014, 05:58 PM)PixMan Wrote: Glad to be of help. Your call on if I ship this to you or wait until next weekend when I attempt the mating part.

wait until you have the other part done, I have a ton of other work to do on it like sanding, and more sanding. That part looked beautiful.

DAllen

[dallen]

started the afternoon hoping to fix a crashed gear that runs the apron on my 12" enco which for some reason loves to eat cheap Chinese bronze gears.

need about and in of 4 MM keyway and it will be ready to see if it will fit.



DA

[PixMan]

Great work David! Can you share with us how you determined the angle, how you set it on your indexing head and how you found the "center" for cutting the teeth?

Also, is that a 20º pressure angle module pitch gar or what?

[dallen]

I cheated I used the old gear to align the cutter with, I know its probably off some but for what the gear does and the wear on the worm that it mates with it should fit ok.

Math isn't one of my smartest points, so if would of had to of actually figured it out I would probably still be in there trying to get things aligned. It actually would be a lot easier to do with a Horizontal mill, then all you would have to do it set the index head at an angle and fine the center of the teeth.

Now if I can find the 4MM broach to cut the keyway with, I'll be pretty much set.

And the original gear was probably metric but the 20 degree cutter fit the old gear perfect plus I've used it to cut other gears for the lathe with.

I also put in some time on the highwall today. I have just about finished blending all the joint on the bottom of the action so that I can start in with the sand paper.




now to pull it apart so I can file one tiny spot where the thumb pad hits the action making it hard to cock.


DA

[f350ca]

Good job on the gear. It seams to mesmerize the average person when you show them a gear you made.