A part I made at work today

[JRD77VET]

A customer ordered a part today and I got to turn the part on the CNC lathe out a solid bar.

Sometimes the parts I make weigh thousands of pounds and can be a very large diameter or length.

This isn't one of them :lol:

http://img.photobucket.com/albums/v78/JRD77VET/work%20stuff/a8310101-f8de-4fa0-95b3-dec5d5631fe6.jpg~original

http://img.photobucket.com/albums/v78/JRD77VET/work%20stuff/72ebd344-7c7c-48d0-ad13-3adb14446b95.jpg~original

I started out with a piece of 316L round stock 1-1/4" in diameter. It finished at 1-3/16" diameter with a height of 15/32" ( just under 1/2" ) and has a thickness of .035 ( 1/32" )

Three hours set up time and 15 minutes to run the part :rofl:

[DAB]

Bill them for 3.5 hours.

What does it do?

[mrvette]

Been ME, I would have chucked it up in my old HS lathe from 9th grade shop class and turned it out before class let out.....50 minits.....


:seasix::hurray:

[JRD77VET]

Bill them for 3.5 hours.

What does it do?

I did it under budget, they gave me 5.3 hours to make one. ( they got two )

It's a drip funnel. :yesnod: Considering shop rate is $85 , they probably got close to $500 for this piece of machining excellence :D

[Black94lt1]

Excellent work as always

[JRD77VET]

Been ME, I would have chucked it up in my old HS lathe from 9th grade shop class and turned it out before class let out.....50 minits.....


:seasix::hurray:


A few details I left out. Tolerance on all dimensions including all the interior and exterior radii is +/-.005 with a finished thickness of .035

I cut the interior of the bowl, the radius on the back, plus the ID bore and parted it ( cut off ) in one operation.


Good luck grinding form tools to get that finish :yesnod:

[Dave]

Those seem like crazy-tight tolerances on a drip-funnel.

CNC lathe?

[JRD77VET]

Those seem like crazy-tight tolerances on a drip-funnel.

CNC lathe?

:yesnod: I have to hold the tolerance if it's drawn that way. They also pay for the tight tolerances too :yesnod:

[Datawiz]

Jeff,

The next time you do something like this, it would be cool as hell for us lay people if you did a video recording of the entire setup and machining of the part. We could easily time-lapse the video to make it consumable, but I for one would LOVE to see how you go about doing this.

Craig

[OddBall]

Cool drip-funnel, but how on earth did you mill that quarter?

[Black94lt1]

Cool drip-funnel, but how on earth did you mill that quarter?

How do you expect him to remember those details, that was 27 years ago :D

[Iron Chef]

Not to intrude on your thread, but this is a part I designed for the interior of an armrest on a 777. Aluminum, a few holes, a few rivets, a nutplate. Simple, right?

:rofl:

After all the changes and revisions (thanks to the South American airline that requested it), it probably costs thousands of dollars. About the same size as your piece.

http://img.photobucket.com/albums/v613/ironchef10/20170209_090916_zpsc3brbmql.jpg

Whole lotta :spdchk: here.

[09SilverC6]

don't let the feds know your cutting quarters:rofl:

[DAB]

Not to intrude on your thread, but this is a part I designed for the interior of an armrest on a 777. Aluminum, a few holes, a few rivets, a nutplate. Simple, right?

:rofl:

After all the changes and revisions (thanks to the South American airline that requested it), it probably costs thousands of dollars. About the same size as your piece.

http://img.photobucket.com/albums/v613/ironchef10/20170209_090916_zpsc3brbmql.jpg

Whole lotta :spdchk: here.

little hinge?

it's cute!!

[Iron Chef]

little hinge?

it's cute!!

It's a bracket to hold an earphone jack. The customer wanted it moved forward in the armrest one inch. ONE...F-ING...INCH. They have zero clue as to what has to be done to accommodate that (basically re-engineering 3 other parts and re-routing 2 cable sets).

Jeff's part looks so much simpler.

This customer is a pain in the ass anyway.

[DAB]

had a neighbor who was a mason, very talented, and he had a job one time up on Long Island ($$$$) (lived in MD, so a weekly hike to work) renovating a house for some lady. she wanted the fireplace in the bathroom moved 2 feet over. :faint: that involves unbuilding and re-building the entire chimney up to the roof level ma'am. whatever, i want it moved.

okey dokey. weeks later, it got moved.

nice payday, but rather pointless in the grand scheme of things.

[JRD77VET]

Jeff,

The next time you do something like this, it would be cool as hell for us lay people if you did a video recording of the entire setup and machining of the part. We could easily time-lapse the video to make it consumable, but I for one would LOVE to see how you go about doing this.

Craig

No promises but I'll see what I can do. I'll be cutting some teflon tubes next week, that will have cool looking chips :D

[JRD77VET]

Not to intrude on your thread, but this is a part I designed for the interior of an armrest on a 777. Aluminum, a few holes, a few rivets, a nutplate. Simple, right?

:rofl:

After all the changes and revisions (thanks to the South American airline that requested it), it probably costs thousands of dollars. About the same size as your piece.

http://img.photobucket.com/albums/v613/ironchef10/20170209_090916_zpsc3brbmql.jpg

Whole lotta :spdchk: here.

:cool1: looking part. Sometimes the folks with the money don't have a freaking clue what it takes to alter something. :crazy:

[DAB]

:cool1: looking part. Sometimes the folks with the money don't have a freaking clue what it takes to alter something. :crazy:

"It's just a table/cabinet/dresser...."

Fine, make it yourself. :slap:

:DAB:

People have no idea how much work is involved in a seemingly simple item.

[DAB]

Little box:

[Kerrmudgeon]

I thought stuff like that was all 3D computer graphed and cut with a C&C machine these days. :bilmem:

[mrvette]

Sounds like me in the home renovation business, doing kitchens and baths....tons of fun sometimes.....Like making a decision about moving a kitchen wall or not.....I had it all torn out on the kitchen side, it was a utility wall.....gas and electric....so a dilemma about enlarging the kitchen into the little dining area....:issues:

so we back and forth, then Carl comes over, takes one glance after hearing the conversation, and with his fireman's brogand boots, kicks out the plaster on the other side......decision made.......:kick::dance::rofl:

[Iron Chef]

:cool1: looking part. Sometimes the folks with the money don't have a freaking clue what it takes to alter something. :crazy:

Oh tell me about it. And they have no problem spending the money on it because they'll just pass it along to their customers in the form of higher ticket prices.

One cool thing: I don't often get to actually see the parts I make since they are designed on-screen, then I add tolerances, material specs and then it's sent off into the ether. It's nice to actually hold a part in your hand once in awhile and see that the work you've done is on-target. :)

I thought stuff like that was all 3D computer graphed and cut with a C&C machine these days. :bilmem:

It depends on the shop and the part. The days of drawing boards are over, so almost everything is done in CAD. Depending on the size of the company, some still use 2D AutoCAD and some used 3D solid modeling programs. Not all companies can afford a 3-axis or 5-axis mill in-house, and not all parts require that kind of precision. One of my first design jobs years ago was for a NASA program called Flight Telerobotic Servicer. We were specifying tolerances out to FOUR decimal places (e.g. .0003), which, as Jeff will tell you, is prohibitively expensive. FYI: It's CNC (for computer numerical control).

:cert:

[snide]

Little box:

That's a nice box you have there Douglas.

[DAB]

i still have, and use, a green drafting board, as well as a full set of drafting tools.

drew our new bed's headboard and footboard to scale before i built it. wanted to make sure the proportions looked right.

i try to hold to 1/32" :DAB: but my rip fence is adjustable to 1/1000" :faint:

[DAB]

That's a nice box you have there Douglas.

house warming gift for Will, if he ever gets that house bought and moved into. :slap:

[Iron Chef]

i still have, and use, a green drafting board, as well as a full set of drafting tools.

I have most of mine, except a board, although I probably couldn't draw a straight line anymore even with a T-Square. Not long ago, I found my old set of Koh-I-Noor inking pens.

Been a LOOOONG time! :D

[DAB]

i only had pencils, wasn't allowed to use pens (that was for the draftsmen who had better writing than some lowly engineer).