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Author Topic: Cone Centres  (Read 29154 times)

Rob.Wilson

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Cone Centres
« on: December 21, 2009, 05:57:58 PM »
Hi All

After finishing my TTA i thought i would make a start and put it to work ,,i have a long list of tooling to make ,i bet i am no alone ,, so i thought i would make a start with a couple of cone centres , after looking through my box of odd bearings i found four that would be sutible for the job, so tonight i managed to get some design work done ,,far to cold in the shop .



one will be 100mm dia and the other 65mm

Regards Rob

See below for Plans for the smaller cone centre , larger one to follow
« Last Edit: December 22, 2009, 11:00:54 AM by Rob.Wilson »
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Offline ieezitin

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Re: Cone Centres
« Reply #1 on: December 21, 2009, 06:29:28 PM »
Rob.

Good luck with your build. Nice cad work could you inform me of the program?. Thank you       Anthony.
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GrahamC

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Re: Cone Centres
« Reply #2 on: December 21, 2009, 11:11:00 PM »
Very nice, I will be watching this one.

Yes, what program did you use for the 3d work?

cheers, Graham in Ottawa Canada
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Offline Bernd

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Re: Cone Centres
« Reply #3 on: December 22, 2009, 10:00:09 AM »
Yes, very nice drawings Rob.

One question. Wouldn't you want to use an angular bearing for this purpose since you will be applying pressure on the cone axially and not radialy?

Bernd
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Rob.Wilson

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Re: Cone Centres
« Reply #4 on: December 22, 2009, 10:48:09 AM »
Thanks Anthony and Graham ,,, i use Solidworks to do my CAD drawing ,,,great program ,,its a shame it cant correct my bad spelling ,just notice a few miss spelt word in the drawings  :doh: i have corrected them

Hi and Thanks Bernd ,,, Yes your correct Angular contact bearings would be the best choice of bearing for a job like this ,it is just that   i did not have any in my bits and bobs box so i use what i have , you can still get away with using radial bearings as angular contact for light home use

Angular contact bearing

Standard radial bearing


Regards Rob
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Offline Bernd

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Re: Cone Centres
« Reply #5 on: December 22, 2009, 11:18:08 AM »
Rob,

Just learned something new. I didn't know bearings like you show in the first picture exsisted. By angular I was thinking the kind use on automobile axels.

Thanks,
Bernd
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Offline Darren

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Re: Cone Centres
« Reply #6 on: December 22, 2009, 11:37:42 AM »
I believe you're thinking of taper bearings Bernd ...
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Rob.Wilson

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Re: Cone Centres
« Reply #7 on: December 22, 2009, 11:38:34 AM »
Hi Bernd

You could use a tapper roller bearing ,,its just that they take up allot of room (ok for large cone centre )and you would have to provide away of ajusting them up,The angular contact bearing is the correct bearing but as you see in the photo the plain radial bearing dose offer some angular contact ,,there allot cheaper too a couple of £ $ each

Tapper roller bearing


Regards Rob
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Rob.Wilson

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Re: Cone Centres
« Reply #8 on: December 22, 2009, 11:39:58 AM »
Sorry Darren i did not see you post  :doh:

Regards Rob
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Offline Darren

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Re: Cone Centres
« Reply #9 on: December 22, 2009, 11:53:09 AM »
Tis OK, yours has nice pictures  :clap:
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Rob.Wilson

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Re: Cone Centres
« Reply #10 on: December 22, 2009, 05:11:01 PM »
Hi

Well i managed a hour in the shop tonight ,made a start on the spindles , the TTA made short work of the 2MT's





Regards Rob
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Offline Darren

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Re: Cone Centres
« Reply #11 on: December 22, 2009, 05:39:04 PM »
That's a nice finish you're getting, what's the steel?

Glad to see the TTA is working well  :clap:
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Rob.Wilson

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Re: Cone Centres
« Reply #12 on: December 22, 2009, 05:58:20 PM »
CHEERS Darren

I think its ether EN16 or EN24 ,,i cant remember wich since i cut the wrong end off the bar a wile back ,,the end  with the ID mark on it  :doh:

Regards Rob
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Offline Gerhard Olivier

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Re: Cone Centres
« Reply #13 on: December 23, 2009, 03:14:06 AM »
Rob arent you glad you put all the work into the TTA now.  Nice to see nice tools put to good use.

Gerhard
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Rob.Wilson

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Re: Cone Centres
« Reply #14 on: December 23, 2009, 05:16:35 AM »
Hi Gerhard

Yes i am very pleased with it,, well worth the effort  :D i do like making tooling ,i am trying to make the tooling in some sort of order TOOLS to make TOOLS , I do like you idea of using a revolving chuck in the tail stock  :thumbup:,,, looks like i will have to make one too

Regards Rob
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Offline Bernd

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Re: Cone Centres
« Reply #15 on: December 23, 2009, 10:11:56 AM »
Thanks Darren and Rob, I now have my bearings on bearings.  :lol:

Very nice work your doing there Rob.

Bernd
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Offline CrewCab

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Re: Cone Centres
« Reply #16 on: December 23, 2009, 03:44:23 PM »
Nice work Rob and a nice write up .............as usual ............ thanks  :thumbup:

CC
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Rob.Wilson

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Re: Cone Centres
« Reply #17 on: December 24, 2009, 02:44:14 PM »
Cheers CC

Well i managed to finish the the spindles today ,, thats it for now  ,,, Merry Christmass every one




Regards Rob
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Offline Darren

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Re: Cone Centres
« Reply #18 on: December 24, 2009, 06:20:53 PM »
Looking good  :thumbup:
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Offline Powder Keg

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Re: Cone Centres
« Reply #19 on: December 27, 2009, 12:25:11 AM »
Looks pretty nice there!!! I have a pipe center. But I always need a bigger one. i never thought of just building one? Great another project :doh:
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A Gismo ??? If it has a flywheel or spins and is made with small parts. I'll take one! If it makes noise, moves, or requires frequent oiling and dusting it's a better deal yet. It's especially right if its shiny and bright; but if it's dirty and dull it wont mater at all...

Rob.Wilson

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Re: Cone Centres
« Reply #20 on: December 28, 2009, 03:07:17 PM »
Thanks Darren and Wes

I manged to finish the smaller cone centre today
first up i turned up the inner part of the cone for   the bearings making them a light press fit .


Then it was flipped   around and the tapped section was rough turned ,,,no need to worry about it being concentric with the bearings,just ruff it to size and the centre hole tapped M6


Then every thing was pressed together and the circlip fitted ,sorry photo wrong way round


Then the centre was fitted to the tailstock and a short M6 cap screw fitted to the cone,making sure the cone could still rotate


Then using a 5mm allen key fitted to the lathe chuck and plugged into the M6 screw ,to drive the cone


the cone was turned TRUE, the allen screw will come in handy if you say catch the cone with a tool or it wears its not hard to clean up the tapper ,also of you need to strip the cone remove rear circlip and use a longer M6 crew to split the centre ,jacking the cone off the spindle


smaller one finished


tomorrow i hope to get time to machine up the 100mm cone

Regards Rob



« Last Edit: December 29, 2009, 12:29:22 PM by Rob.Wilson »
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GrahamC

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Re: Cone Centres
« Reply #21 on: December 28, 2009, 03:29:04 PM »
Excellent Rob, very nice indeed.

I really liked your way of truing up the cone while mounted in the tail stock.

cheers, Graham in Ottawa Canada
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Offline Darren

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Re: Cone Centres
« Reply #22 on: December 28, 2009, 05:39:17 PM »
Yes that truing up was a neat trick, very nice job  :clap:
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Offline Gerhard Olivier

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Re: Cone Centres
« Reply #23 on: December 28, 2009, 05:41:08 PM »
Clever Clever Clever

Nicely done Rob

Gerhard
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Offline Bernd

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Re: Cone Centres
« Reply #24 on: December 29, 2009, 10:04:35 AM »
Yup, what the others have said.  :thumbup:

Bernd
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