MetalworkingFun Forum

Here's a video some of you may enjoy of a job we are currently running in our Okuma Cnc lathe.

But first.....here's a couple pics so you can see what they are.



These are artillery brush adapters for the U.S. Army. We have 935pcs on this order. The material we are using is 1.250" dia. 1018 CRS.




Here's the video......enjoy!!

http://youtu.be/tWF9kXa44e8

Best Regards,
Russ

PS: And YES Ken......I should be using an inserted drill for the thru hole.
Honestly......I completely forgot about buying the .515" tips for the .500" drill body I have......DOH!!!......and now we're stuck running two shifts Saturday and Sunday to get these done.........UGH!

I can't believe the nice finish you got on that nasty 1018 material. I guess the correct tools make a big difference.

Ed

(01-12-2013, 10:29 PM)EdK Wrote: [ -> ]I can't believe the nice finish you got on that nasty 1018 material. I guess the correct tools make a big difference.

Ed

Thanks ED! The inserts I use coupled with the proper SFM and the coolant being used all play a crucial role in not only the surface finish, but also in the tool life and tolerance of the part. I use Walter inserts, and Val-Cool VP TECH coolant......all top notch in my book!

Best Regards,
Russ

Thanks for posting that Russ. Just out of curiosity, why are some red?

(01-12-2013, 10:47 PM)Mayhem Wrote: [ -> ]Thanks for posting that Russ. Just out of curiosity, why are some red?

Those parts are marked with red DYKEM to indicate they have been 100% inspected by the operator who must do so at predetermined intervals to insure quality. In this case it is one out of every 12 pcs. Those parts were made on 2nd shift and it is a method I use to keep consistent quality when no one is really there to oversee it. When a random inspection of non marked pcs the next morning is performed, they had better all be to print or else!

If a piece measures out of spec. the operator is to go back and find the last good piece before the previous inspected part, and remove any that do not pass inspection and then find out why there is a deviation from the print and correct it before proceeding.

This particular job is not all that fussy, thus the 1 in 12pcs interval. Some parts we make are 100% inspection regardless of qty.

Best Regards,
Russ

That's an interesting way of keeping the QC function flowing. When I was working in the screw machine shops with much smaller parts we had similar procedures, though we never marked parts. Segregation yes, marking no, because it took too long and wasted acetone to clean the Dykem off. We just put the inspected part in the thin plastic bag with a small paper noting sequence number for the part. That sequence number matched the list on the inspection report. Everyone does it differently, there's no one answer to suit all.

I love the finish! They look like aluminum. Yeah, one shot in with an insert drill would have taken a serious chunk of time out of that job. How did the drilling operation work out? Perhaps the next lathe will be able to do that? ;)

Nice! What happened to the slugs left over?

Hey Russ,

This would be a good place to offer up for sale some of the material you got that was wrong diameter.

Guys, I believe he's got a bunch of 1-1/8" rounds x 24" long bars of 1018. Goad him into selling it for projects.

Come on Russ. How about some of those unneeded drops you have.

Ed

(01-14-2013, 04:01 PM)PixMan Wrote: [ -> ]Hey Russ,

This would be a good place to offer up for sale some of the material you got that was wrong diameter.

Guys, I believe he's got a bunch of 1-1/8" rounds x 24" long bars of 1018. Goad him into selling it for projects.

I hear what you're saying Ken, and thought of that too, but not sure how easy it would be to ship them. Even cut in half (12"lg) they would be to heavy to just throw in a box without wrapping them to protect them from breaking out of the box. I may have to look into it though as I have approx. 80 pcs 24" lg and being a 99% aluminum shop, they could end up sitting around for years to come!

Best Regards,
Russ