[Metal lathe] Indexing plate and cranck

[Brendon]

Christophe,
Congratulations on winning tool of the week for your indexing plate.
A very useful and nice piece of kit and beautifully made.
Keep up the good work.
Brendon

[Paul Jones]

Congratulations Christophe,

The whole indexing system you created is well designed and made to be universal for many types and makes of lathes. I wish I had something similar on my 12" swing lathe and could have used it for a recent project. Thank you for the creative ideas.

Regards,
Paul

[axgold]

Nice work there but I'm not understanding what the shaft cut at 45 is for?

I was wondering the same thing and guessed it must be to wedge the shaft in the arbor hole maybe?

[high-side]

Nice work Christophe!
Thanks for sharing.

[Karl_H]

The cut at 45 Deg., allows the short piece to slide when the bolt at the end is tightened and locks to the spindle ID holding the whole assembly in place. Simple and effective.

This is the same mechanism used to position the handlebars on a bicycle - at least on the ones I had as a kid.

[hemmjo]

Very nice Christophe. I have had something like that rattling around in my head for quite a while. It is nice to see it out in the open like this.

Bicycles have been using the angled shaft locking method for a long time for the handle bar stem.



I still remember when I was 6 or 7, being amazed working with my dad restoring my very first bike. He loosened a bolt on the handle bars. Smacked it one time with a hammer. Magically, the handle bar stem slide out of the fork tube.

He had found an old beat up bike someplace. Brought it home for me. We took that bike ALL apart, cleaned it, painted it, put it back together. It was to big for me, but I grew into it. Ah... one again I digress...

[basalt]

Nice work there but I'm not understanding what the shaft cut at 45 is for?

When the 2 pieces cut at 45 degrees are drawn together they expand inside the spindle and jam.

[mklotz]

When the 2 pieces cut at 45 degrees are drawn together they expand inside the spindle and jam.

Works equally well for square stock; handy for something that needs to lock into a square-sided slot.

[monkeymade10]

To lock it into the spindle bore like the gooseneck in a bicycle :-)