[vhfpmr (OP)]

The 64,000 dollar question is why is this 'swarf' coming off the tool perfectly straight and flat when any other swarf comes away in a curl?

https://twitter.com/engineers_feed/status/1662762998404902913

[Zer0]

The proportion of the Tool was huge, in comparison to the job/product.

It had a yellowish oily fluid in place of a milky white cutting fluid.

Anyways, i think the Thickness of the plates being cut is not allowing it to Curl.
(guessing)


ps - Why is it a $64,000 question?

[vhfpmr (OP)]

The proportion of the Tool was huge, in comparison to the job/product.

It had a yellowish oily fluid in place of a milky white cutting fluid.

Anyways, i think the Thickness of the plates being cut is not allowing it to Curl.
(guessing)

See here:


Skiving.png (8.13 kB . 1717x656 - viewed 1183 times)

In order for the shaving to separate, it must bend at A in order to make room for the tool, but before A it had to bend at B, and before B, C, etc. Hence the shaving curls, because once it has bent at the tip, there's nothing applying a force to straighten it again.

If you look at the video however, you'll see that the finished fin is less that half the length of material shaved off, so it must be being compressed, and I think it might be the deformation beyond it's elastic limit as it's compressed that's straightening it, but I'm not conviced I can see where the force to do that would come from either. The shaving is sliding over a smooth lubricated surface, after all.

And if it that's it, why doesn't all swarf come off the tool straight?

ps - Why is it a $64,000 question?

It's just a turn of phrase. It derives from an old 1960s TV contest in the USA where people answered questions with a prize that doubled each time. The final question was the $64,000 question.