SOBA rotary table

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SOBA rotary table

This topic has 24 replies, 10 voices, and was last updated 10 December 2012 at 15:17 by Bob Perkins.

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1 December 2012 at 19:32 #105221
Bob Perkins
Participant
@bobperkins67044
Hi all

Does anybody have a copy of a user manual/instructions for a 100mm SOBA rotary table they can share?

thanks

Bob
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1 December 2012 at 19:32 #16945
Bob Perkins
Participant
@bobperkins67044
1 December 2012 at 19:56 #105224
Les Jones 1
Participant
@lesjones1
Hi Bob,
I don't have a manual on the Soba rotary table but I have this document on using a rotary table which you may find useful. I do not remember the website where I found it. It is in a "Dropbox" folder which I will remove after a few days. If anyone wants it after this time PM me with an email adress and I will send it as an attachment.

Les
1 December 2012 at 19:56 #105225
chris j
Participant
@chrisj
**LINK**

Worth a try
1 December 2012 at 20:24 #105226
dcosta
Participant
@dcosta
Hello Bob!

I have the ”SOBA operation and service manual” for my 6” SOBA rotary table.
I think it is dedicated to other sizes of SOBA rotary tables.
If you are interested please let me know and I'll send it to some electronic address.
If you intend to use the address made available by Chris, please take care to know, first, if the executable file necessary to make the download of the document you want doesn't let some kind of spy or something in your computer.

Best regards
Dias Costa

Edited By dcosta on 01/12/2012 20:34:36
1 December 2012 at 20:39 #105227
Bob Perkins
Participant
@bobperkins67044
Thanks Les I have this and there is some useful and interesting info in this.

Thanks Chris I tried this earlier today and couldn't get the download to work. Perhaps it's an iPad thing, I'll try on the pc later.

Thanks Dias. An email to perkinsbob@hotmail.com would be great.

Thanks all

Bob
2 December 2012 at 10:18 #105235
Michael Gilligan
Participant
@michaelgilligan61133
Posted by Les Jones 1 on 01/12/2012 19:56:29:

Hi Bob,
I don't have a manual on the Soba rotary table but I have this document on using a rotary table which you may find useful. I do not remember the website where I found it. It is in a "Dropbox" folder which I will remove after a few days. If anyone wants it after this time PM me with an email adress and I will send it as an attachment.

Les

A very useful document, thank you Les

MichaelG.
2 December 2012 at 16:31 #105272
GaryM
Participant
@garym
Posted by Les Jones 1 on 01/12/2012 19:56:29:

Hi Bob,
I don't have a manual on the Soba rotary table but I have this document on using a rotary table which you may find useful. I do not remember the website where I found it. It is in a "Dropbox" folder which I will remove after a few days. If anyone wants it after this time PM me with an email adress and I will send it as an attachment.

Les

The document Les linked to is on LittleMachineShops web site here:-

**LINK**

HTH

Gary
2 December 2012 at 18:13 #105283
Sub Mandrel
Participant
@submandrel
The document Les found is really excellent, but note that it is for a table with a 72:1 (5 degrees per turn) worm. This is unusual as most are 60:1 (6 degrees) or 40:1 (9 degrees) – be aware you will probably need to allow for this.

I am inspired to make a larger index wheel for my table with rather more divisions (although 180 to get the same 2 second divisions seems a bit of a challenge!)

Neil
2 December 2012 at 20:23 #105298
Michael Gilligan
Participant
@michaelgilligan61133
Note:

It's worth going back up to a higher level on their website

… Lots of useful info. !!

MichaelG.
2 December 2012 at 21:41 #105305
Brian in OZ
Participant
@brianinoz24148
Hello "Bob Perkins",

The file is there but as Dcosta pointed out be very carefull as the site will try and download some other software to your PC. When it leaves you at the "download" screen simply use your browser to back-up (go backwards) one screen and you will find one of those little boxes to fill in a code, do this and "submit" then a couple of lines above you will seee PDF you are after, simply "right click" it and save, is a good file.

Also thanks to Michael, the PDF you made available is really good

Regards

Brian in OZ
2 December 2012 at 21:45 #105306
Bob Perkins
Participant
@bobperkins67044
Hi Brian

I caught on to that when I looked at the site earlier. It tries to download some type of media playerreader.

Thanks

Bob
2 December 2012 at 22:06 #105308
Brian in OZ
Participant
@brianinoz24148
Hi Bob,

Yes it is one of those sneaky sites, in fact I just checked out the file I downloaded and found it to be corrupted so can't open it. Deleted it and hope I did not get any other "junk" with it, might go back later and figure out what happened, in the meantime I'll do a Google and see if the manual is available elsewhere.

Brian
2 December 2012 at 22:47 #105310
dcosta
Participant
@dcosta
Hello Bob Perkins!

Have you received the file I sent to you yesterday?
If so was it of some help?

Best regards
Dias Costa

Edited By dcosta on 02/12/2012 22:47:40
2 December 2012 at 23:05 #105312
Anonymous
Posted by Stub Mandrel on 02/12/2012 18:13:30:

This is unusual as most are 60:1 (6 degrees) or 40:1 (9 degrees) – be aware you will probably need to allow for this.

Oeeeer, I think my rotary table is 90:1, ie, 4° per turn of the handle – Andrew
3 December 2012 at 06:57 #105319
Michael Gilligan
Participant
@michaelgilligan61133
Posted by Andrew Johnston on 02/12/2012 23:05:02:

Posted by Stub Mandrel on 02/12/2012 18:13:30:

This is unusual as most are 60:1 (6 degrees) or 40:1 (9 degrees) – be aware you will probably need to allow for this.

Oeeeer, I think my rotary table is 90:1, ie, 4° per turn of the handle – Andrew

40:1, 60:1, 72:1, 90:1 are all fairly common, and are all "good" ratios for the job, because they have some useful factors. [Although, of course, 40 lacks 3; which must therefore be accommodated elsewhere in the system.]

They are all also factors of 360; which simplifies dividing into "degrees".

MichaelG.

P.S. If adding a Stepper Motor to a 40:1 table, it's worth considering a 48-step motor instead of the now common 200-step … so as to introduce the factor 3.
3 December 2012 at 07:09 #105320
Bob Perkins
Participant
@bobperkins67044
Hi Dias

No email yet. Please try again. I'll send back a thank you message to confirm when it arrives.

Thanks

Bob..
3 December 2012 at 07:13 #105321
Michael Gilligan
Participant
@michaelgilligan61133
Posted by Brian in OZ on 02/12/2012 22:06:13:

Hi Bob,

Yes it is one of those sneaky sites, in fact I just checked out the file I downloaded and found it to be corrupted so can't open it. Deleted it and hope I did not get any other "junk" with it, might go back later and figure out what happened, in the meantime I'll do a Google and see if the manual is available elsewhere.

Brian

Bob / Brian

I didn't like the look of that site either.

Here is a direct link to six more pages on the LittleMachineShop site.

MichaelG.
3 December 2012 at 14:02 #105343
Bob Perkins
Participant
@bobperkins67044
Thanks all

I now have loads of info to look at, including a guide for the SOBA table.

Regards

Bob
7 December 2012 at 18:28 #105685
John Hinkley
Participant
@johnhinkley26699
Now that it looks like you have the answer – can I hi-jack your thread? Some while ago,I bought a 4" rotary table from a UK supplier, but never got around to using it! Now that it's out of guarantee, I've dug it out and tried it. It seems to have been manufactured using a revolutionary elliptical worm gear, in that it has a couple of tight spots when turning a full circle. I'll try to sort it when I have more time. However, my question to you, Bob, is, assuming you've got one, how good is the Soba one? I've arrived in the UK today and was intending to go to Chronos in Dunstable, on Monday, to pick up one with tailstock and dividing plates. Don't want to spend all that money and have a wasted journey if they are of dubious quality!

John
7 December 2012 at 19:25 #105690
Bob Perkins
Participant
@bobperkins67044
Hi John

I'm really pleased with mine. The quality for the price is good value. I haven't used the index plates or the tail stock yet as I've only had it a few weeks. I've only used it a couple of times to mill 4 slots at 90 degrees to each other. The movement is smooth with no tight spots. I think Cronus supply theirs with a user manual, if not I have a PDF thaks to Dias.

Happy shopping

regards

Bob..
7 December 2012 at 20:28 #105707
John Hinkley
Participant
@johnhinkley26699
Hi, Bob,

That's marvellous! Looks like a trip up the A5 is on, then. Better break out the credit card!

John
7 December 2012 at 20:39 #105711
Bob Perkins
Participant
@bobperkins67044
Mine came from Axminster
10 December 2012 at 14:12 #105888
John Hinkley
Participant
@johnhinkley26699
Bob,

I'm back from my trip to Dunstable, somewhat lighter in the wallet, but with a 4" soba rotary table, tailstock and dividing plates. I decided that the 6" one was too large for my mill, so I didn't get the rotary table document that comes with that. I'd be grateful if you could pm me a copy ofthe on Dias sent you, if that's OK with him. Thanks.

John
10 December 2012 at 15:17 #105891
Bob Perkins
Participant
@bobperkins67044
John

No problem. Send me a private message with your email details.

regards

Bob
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