Author Topic: Coax Indicator, designed by W.K.Todd  (Read 3054 times)

Offline fumopuc

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Coax Indicator, designed by W.K.Todd
« on: December 12, 2018, 11:05:45 AM »
Hi everybody,
I am trying to make one, here the slightly modified design and were I am today.
Kind Regards
Achim

Offline BillTodd

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Re: Coax Indicator, designed by W.K.Todd
« Reply #1 on: December 12, 2018, 12:19:30 PM »
Looks good,

 It's really a buzz to see someone making something I designed  :pinkelephant:

Were the drawing ok, were you able to follow my description?

Bill

P.s the pdf is on my google drive here:

https://drive.google.com/file/d/0BwXDcXKx2KzlaUVrZ0l6QU4yaTA/view?usp=drivesdk
« Last Edit: December 12, 2018, 12:22:33 PM by BillTodd »
Bill
wy omnibus Latinis taurus stercore?

Offline fumopuc

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Re: Coax Indicator, designed by W.K.Todd
« Reply #2 on: December 12, 2018, 01:44:04 PM »
Hi Bill,
thanks for the link to your drawings.
It seems that I have downloaded the same set some time ago, I think via MadModder.
During the last summer I have redrawn everything in Fusion 360 and I have started the making now.
For me the information of the real shape and dimension of the rocker was a bit weak, so I have imported the picture into Fusion and the software has calculated everything by given the dimension of a known whole, 4 mm.
Progress will be shown here.
Kind Regards
Achim

Offline fumopuc

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Re: Coax Indicator, designed by W.K.Todd
« Reply #3 on: December 12, 2018, 02:36:54 PM »
... and the up date from this afternoon.
The two aluminum parts are fitted togther with some epoxy glue and cured in the oven at 100C.
My fingers should give an idea about the overall dimension.
Currently I am playing a bit with Fusion CAM.
Kind Regards
Achim

Offline Vixen

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Re: Coax Indicator, designed by W.K.Todd
« Reply #4 on: December 12, 2018, 03:52:18 PM »
Hi Bill and Achim,

This coaxial indicator looks very useful and has been added to my 'to do' list   :ThumbsUp: :ThumbsUp:

Do you find it more convenient to have the dial facing forward of facing upward? I am thinking about the view of the dial, when you swing it through 360 degrees.

Mike
It is the journey that matters, not the destination

Online sco

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Re: Coax Indicator, designed by W.K.Todd
« Reply #5 on: December 12, 2018, 04:46:10 PM »
I've always wanted one of these so have added it to my 'To Do List' too!

Thanks Bill and Achim,

Simon.
Ars longa, vita brevis.

Offline fumopuc

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Re: Coax Indicator, designed by W.K.Todd
« Reply #6 on: December 12, 2018, 04:55:34 PM »
Hi Bill and Achim,

This coaxial indicator looks very useful and has been added to my 'to do' list   :ThumbsUp: :ThumbsUp:

Do you find it more convenient to have the dial facing forward of facing upward? I am thinking about the view of the dial, when you swing it through 360 degrees.

Mike


Hi Mike, with the M4 bolt a clamping in every position should be possible.
Kind Regards
Achim

Offline b.lindsey

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Re: Coax Indicator, designed by W.K.Todd
« Reply #7 on: December 12, 2018, 05:08:45 PM »
Well the beauty of a coax indicator is that the dial stays in one place and doesn't swing through 360 degrees.

Bill

Offline Vixen

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Re: Coax Indicator, designed by W.K.Todd
« Reply #8 on: December 12, 2018, 05:13:00 PM »
Well the beauty of a coax indicator is that the dial stays in one place and doesn't swing through 360 degrees.

Bill

Thanks Bill,
I had assumed you rotated the dial gauge, but it seems you can also rotate the spindle and the dial remains stationary.

Mike :facepalm: :facepalm:
It is the journey that matters, not the destination

Online crueby

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Re: Coax Indicator, designed by W.K.Todd
« Reply #9 on: December 12, 2018, 06:19:06 PM »
I had to do a search on coax indicators, there are a couple of youtube vids that show them in action - pretty slick units.

Offline BillTodd

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Re: Coax Indicator, designed by W.K.Todd
« Reply #10 on: December 12, 2018, 06:22:52 PM »
Hi Bill,
thanks for the link to your drawings.
It seems that I have downloaded the same set some time ago, I think via MadModder.
During the last summer I have redrawn everything in Fusion 360 and I have started the making now.
For me the information of the real shape and dimension of the rocker was a bit weak, so I have imported the picture into Fusion and the software has calculated everything by given the dimension of a known whole, 4 mm.
Progress will be shown here.


Ok, perhaps i should have made it clear that the shape is unimportant  , except for the offset stylus mount, which reduces the overal height.

I was going to experiment with the shape of the sliding feet , so as to reduce sine error .
Bill
wy omnibus Latinis taurus stercore?

Offline b.lindsey

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Re: Coax Indicator, designed by W.K.Todd
« Reply #11 on: December 12, 2018, 09:46:36 PM »
Chris that are great for things like aligning the RT to the mill spindle. The only downside is they require a lot of headroom, but perfect for Bridgeport type mills.

Bill

Online crueby

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Re: Coax Indicator, designed by W.K.Todd
« Reply #12 on: December 12, 2018, 10:19:32 PM »
Chris that are great for things like aligning the RT to the mill spindle. The only downside is they require a lot of headroom, but perfect for Bridgeport type mills.

Bill
Having the taller column ony sherline, could work...   Hmmm...

Offline b.lindsey

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Re: Coax Indicator, designed by W.K.Todd
« Reply #13 on: December 12, 2018, 10:30:19 PM »
Bill's design looks like it needs less headroom than my SPI unit. So yeah it could work with the taller column.

Bill

Offline BillTodd

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Re: Coax Indicator, designed by W.K.Todd
« Reply #14 on: December 12, 2018, 11:30:22 PM »
Bill's design looks like it needs less headroom than my SPI unit. So yeah it could work with the taller column.

Bill

I designed it to be as short as possible because the  vertical head on my Haighton mill has very little head room .
Bill
wy omnibus Latinis taurus stercore?