CNC machined projects, nothing for sale.

[d0091sa]

So I wanted to start a thread to share stuff I'm working on. Feel free to post pics of your stuff if you want!



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[tozan]

Nice looking but... This could not be machined on a CNC machine... In particular the counter sunk holes and the cross brace would be impossible to machine and some of the rest would be very difficult too unless it was bolted together or welded.



It is a big challenge to design things that can be made completely with a CNC mill. I do CAD design and CNC programing and when working with concept designers you sometime have to tell them their design is impossible to make and then offer a solution to the design so it can be made.



If you bolt the front and rear section to the tube section hen you could machine most of it. The small brace between the tubes could be welded into place. Or you could machine a flat piece in there too.

[d0091sa]

Easy though. It's a 6 piece design not a single piece.

We do injection molding here at my shop also, the rear pad will be a soft rubber that is over molded.

The rest will be 2024-t3 aluminum tubing and 7075-t6 for the other bits.

Working on the hinge now.

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[tozan]

Here is a good example of something I made to work around something that could not otherwise be machined. The designer wanted the bolt to be inside the swing arm so we had to make the threaded part slide into the arm and get bolted in on the back side. I also suggested welding it and re machining the face but he opted for this instead. In addition to motorcycles I have also designed firearms too.

[d0091sa]

Here is a good example of something I made to work around something that could not otherwise be machined. The designer wanted the bolt to be inside the swing arm so we had to make the threaded part slide into the arm and get bolted in on the back side. I also suggested welding it and re machining the face but he opted for this instead. In addition to motorcycles I have also designed firearms too.

Looks good. I'm so glad we only do aerospace, did and now FFL work. Those automotive type customers are so picky.

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[nn21]

Nice looking but... This could not be machined on a CNC machine... In particular the counter sunk holes and the cross brace would be impossible to machine and some of the rest would be very difficult too unless it was bolted together or welded.

The only thing keeping it from being machined in one go is the lack of fillets on the cross brace and the termination of the cylindrical sections. They make reverse counterbore tools for counterbores on internal walls just like this. Would be a really stupid part to do, drive anyone programming it up the wall, and cost a ton but the only thing keeping it in the realm of impossible are some small fillets.

[d0091sa]

The only thing keeping it from being machined in one go is the lack of fillets on the cross brace and the termination of the cylindrical sections. They make reverse counterbore tools for counterbores on internal walls just like this. Would be a really stupid part to do, drive anyone programming it up the wall, and cost a ton but the only thing keeping it in the realm of impossible are some small fillets.

Not to mention too damn heavy!



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[saxman]

Easy though. It's a 6 piece design not a single piece.

We do injection molding here at my shop also, the rear pad will be a soft rubber that is over molded.

The rest will be 2024-t3 aluminum tubing and 7075-t6 for the other bits.

Working on the hinge now.

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You're not trying to weld that cross brace tubing in place, are you?

[d0091sa]

You're not trying to weld that cross brace tubing in place, are you?

Nope, can't weld 2024 aluminum.

Just want to be clear...I own an aerospace/DOD machine shop with some 30 CNC mills and lathes, waterjet, pressbrakea and injection mold machines along with several romer arms. We are an ad9100d and iso9001:2015 registered company.

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[nn21]

Nope, can't weld 2024 aluminum.

Haha I was just writing this out but saxman beat me to it. A rare move from his scuba forum reading.

I'm curious how you're fastening the tubing on both ends...and the crossbrace, for that matter, since welding is off the table?

[d0091sa]

Haha I was just writing this out but saxman beat me to it. A rare move from his scuba forum reading.



I'm curious how you're fastening the tubing on both ends...and the crossbrace, for that matter, since welding is off the table?

Probably just going to use good old fashioned roll pins to keep the weight down.

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[saxman]

No worries. Figured without any obvious fasteners in the model, you were either trying to weld or braze the tubes together.

[d0091sa]

No worries. Figured without any obvious fasteners in the model, you were either trying to weld or braze the tubes together.

Fair enough.

We do induction brazing here also but I don't think it's a good fit for this.

I'll probably just do 3 roll pins to hold them together.

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[Scratch705]

this belongs more on instagram than a forum to be honest.

[d0091sa]

this belongs more on instagram than a forum to be honest.

I can't stand Instagram or Facebook. I'll pass

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