What have i bought??

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What have i bought??

This topic has 16 replies, 11 voices, and was last updated 8 April 2015 at 19:56 by Roy M.

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4 April 2015 at 18:48 #185537
matthew tiley
Participant
@matthewtiley31041
Hi guys.

I was looking at trying my hand at making some gears for my lathe and knew that one thing i would need is an indexing dial.

I saw this lump today and got it right cheap but I think I may have way overspeced…

Does anyone have any info on this piece of gear and or if have got something I will probably never use…..

Regards

Mat
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4 April 2015 at 18:48 #17665
matthew tiley
Participant
@matthewtiley31041
4 April 2015 at 19:12 #185543
Neil Wyatt
Moderator
@neilwyatt
> Does anyone have any info on this piece of gear and or if have got something I will probably never use…..

Just pm me your address and I will send you a jiffy bag for it.

Now upset us all by telling what you paid for it.

Neil
4 April 2015 at 19:32 #185550
Oompa Lumpa
Participant
@oompalumpa34302
Nice, nothing wrong with that. Did you get any more index plates with it and will it fit onto the table of your Mill?

graham.
4 April 2015 at 23:09 #185576
Rik Shaw
Participant
@rikshaw
Hello Mat

Spend an hour on GOOGLE looking up manufacturers name / part number or any thing relevant that the part is marked with.

Include all the relevant information in an ebay listing.

After your successful sale use the loot to buy the gears for your lathe.

KISS

Rik
5 April 2015 at 04:37 #185578
John McNamara
Participant
@johnmcnamara74883
Nice find Mathew

I also tried Google images, No luck But here is the link…. It is amazing how may different dividing head images are out there in the aether.

**LINK**

Regards
John
5 April 2015 at 08:37 #185588
DMB
Participant
@dmb
Strewth!
5 April 2015 at 10:15 #185600
Neil Wyatt
Moderator
@neilwyatt
To be honest, it looks simple enough to use, all you need to do is work out the gear ratio for the worm wheel.

Only two issues – one you will struggle to use it in horizontal mode and two, it will obviously use up a lot of room.

Neil
5 April 2015 at 20:39 #185657
matthew tiley
Participant
@matthewtiley31041
Tracked it down to being a Walter SVT100.

The plate on top is split into 9 with 60 marks in-between each 1-9

each number turns the chuck by 1 degree so 9 degrees a turn makes 40 turns for on revolution of the chuck.

Not sure if this is normal as i have never owned or used an indexing dial before. all seems fairly straight forward, now just need something to mount it on……….

Thanks guys
6 April 2015 at 13:06 #185707
Neil Wyatt
Moderator
@neilwyatt
40 is one of the commoner ratios, along with 60.

Using teh dial you can get 1-minute accuracy (1/60 0f a degree) which is good enough for many purposes without resorting to teh division plate. The division plate will make it harder to make errors…

Neil
6 April 2015 at 14:47 #185712
John McNamara
Participant
@johnmcnamara74883
H Matthew

I rather like your find, the centre height appears to be fairly low, that might help if you end up with a smaller size mill. Having the index plate on top is handy too. it keeps it out of the way of the hand wheels. Made in Germany….. If you open it up you will almost certainly find a nice precision ground and lapped worm and wheel that can be adjusted to zero backlash together with precision bearings that are also adjustable.

I found some more images on the net **LINK** it appears you can rotate it on its base.

If the bolt slots in the base do not line up with a particular mill you can always make up an adaptor plate.

I can not see a tailstock in the picture, it would not be that hard to fabricate one a few ideas here:
**LINK**

Regards
John
6 April 2015 at 19:53 #185728
Robbo
Participant
@robbo
<<the division plate will make it harder to make errors…..>>

Ho Ho Ho!
7 April 2015 at 21:30 #185799
Roy M
Participant
@roym
I have a complete manual for the use of a dividing head,including information about change gears(for really abstract divisions),plus info on set ups for helical milling. If there is any interest, I will try and copy it to share.

Roy M.
8 April 2015 at 09:32 #185824
Nigel McBurney 1
Participant
@nigelmcburney1
The low centre height possibly indicates it was intended for the German/swiss type precision toolmaking mills,used for making punches,milling cutters etc and could be mounted on the table or the front face of the machine,with swivel table removed,google LATHES UK and then go to THIEL under the list of milling machines which shows an example of this type of dividing head with index plate on top. bit of very expensive kit in its day.
8 April 2015 at 10:38 #185830
Mick Yaxley
Participant
@mickyaxley20393
Hi Matthew,

Looks like a nice bit of kit, once you're familiar with it you'll wonder how you ever did without it!

If you can't achieve the number of divisions using the index plate that's shown, have a look on the other side of it, there may well be another selection of blind holes.

Cheers,

Mick
8 April 2015 at 13:01 #185835
Capstan Speaking
Participant
@capstanspeaking95294
Posted by Roy M on 07/04/2015 21:30:13:

I have a complete manual for the use of a dividing head,including information about change gears(for really abstract divisions),plus info on set ups for helical milling. If there is any interest, I will try and copy it to share.

Roy M.

Oooh differential indexing, those were the days. Both on div heads and rotary tables.

The things folk had to do years ago.
8 April 2015 at 19:56 #185851
Roy M
Participant
@roym
I am that old, that I have forgotten how clever I was!
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