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View Full Version : Adapting a Atlas RIT to a Southbend shaper.



Your Old Dog
02-17-2008, 09:32 AM
I'm still trying to figure out what to do with this Atlas rotary indexing table I recently picked up. I think it would be a simple matter to make an adapter plate for it.

My question is, if the plate I make is made out of 3/8s plate, do you think it will be sufficiant enough to make a solid mount. The shaper only has something like 5" inches of Z to work with and I'd like to preserve as much of that as possible. I don't want mine to be nearly as high as Southbend Rotary tables that are commonly given away :D

http://bbs.homeshopmachinist.net/http://inlinethumb12.webshots.com/16971/2533803650102651310S600x600Q85.jpg (http://good-times.webshots.com/photo/2533803650102651310unEPnu)

http://bbs.homeshopmachinist.net/http://inlinethumb57.webshots.com/41976/2626391250102651310S600x600Q85.jpg (http://good-times.webshots.com/photo/2626391250102651310ssVqkG)

I was thinking of flame cutting it to rough size and then milling to final size. I haven't milled flame cut plate yet, is this going to be possible or should I use my grinder to grind past the flame cut edge? I don't want to mangle my expensive Chinese cutters!

lazlo
02-17-2008, 09:40 AM
YOD, did you buy that Atlas rotary table that sold a couple weeks ago on Ebay for $224?

Geez, for that price, I'd want a rotab with a worm gear! :)

loose nut
02-17-2008, 09:41 AM
Flame cutting can/will harden the work piece, I've toasted a few cutters this way, it would be better to cut over sized an grind away the edges, then mill to size. Don't forget the top and bottom of the plate may not be accurate enough in thickness and flatness for your purposes and may require finishing too.

Your Old Dog
02-17-2008, 10:00 AM
YOD, did you buy that Atlas rotary table that sold a couple weeks ago on Ebay for $224?

Geez, for that price, I'd want a rotab with a worm gear! :)

No Sir! That wasn't me. I have an entire 10 dollar bill tied up in this one and it's brand new. It was part of a purchase I made for pedestal Milwaukee 10" grinder on my road trip last week. I could have probably got it for nothing had I been willing to get down on bended knees but of course I wasn't willing to do that like some people even if it was for a Southbend :D

Loose Nut, thanks for reminding me that some touch up work might be necessary to the flats. I never gave it a thought. Guess maybe I'll start with 1/2" plate and see where it ends up.

JCHannum
02-17-2008, 11:11 AM
While your investment is small, you might want to consider the fact that most of the Atlas RIT's I have seen appear to be in good condition, and show little use. This leads to the question as to what value it would have.

Since you have a milling machine, if you have a RT for that, it would suffice for most of your RT needs. If you don't have a true RT for the mill, the sale of the Atlas RIT would go a long way toward financing a proper RT that you would probably find much more useful.

BobWarfield
02-17-2008, 11:13 AM
Loose Nut, thanks for reminding me that some touch up work might be necessary to the flats. I never gave it a thought.

There you go, an excuse for a really big fly cutter has just presented itself!

I like these kinds of projects. They can be done in a satisfying afternoon or two and then you get to play with a new toy.

Best,

BW

Your Old Dog
02-17-2008, 11:37 AM
Thanks JC, I already have a 10" RT for the mill. I thought this might find some use on the shaper. One just like it went for $224.00 last week on eBay. I suppose if I got that much for it, it would pay for all my grinder except the diesel fuel to go get it !!

Bob I have a 3" Boring setup I should be able to use as it has a horizontal hole for the boring bars. Should be fun project if the bar don't launch :D

lane
02-17-2008, 12:20 PM
From the picture if it were me I would just transfer and drill and tap 4 3/8 -16 holes in to top of box on shaper to mount RT. That the easy way out and want hurt a thing.

Tinkerer
02-17-2008, 12:42 PM
http://bbs.homeshopmachinist.net/http://inlinethumb57.webshots.com/41976/2626391250102651310S600x600Q85.jpg (http://good-times.webshots.com/photo/2626391250102651310ssVqkG)

I was thinking of flame cutting it to rough size and then milling to final size. I haven't milled flame cut plate yet, is this going to be possible or should I use my grinder to grind past the flame cut edge? I don't want to mangle my expensive Chinese cutters!
YOD you can clean and bevel your flame cut plate with the vary machine your going to use it on... with a simple HSS tool. No need to beat the snot out of a end mill. ;)

Oldbrock
02-17-2008, 04:56 PM
I'm with Lane. Drilling and tapping four holes in your shaper table will do NOTHING to harm it and it will be much more solid than having a steel plate between it and the RT. Remember steel plate is like jello, try leveling a 4' square of 1/2" steel plate with a precision level and you will see what I'm on about. Peter

LastOldDog
02-17-2008, 09:13 PM
YOD, if you are not in a hurry to mount this table, I will compose and post thoughts re my experiences with my SB and post on the morrow. As a 'purist' with a pristine machine, I appreciate the condition and authenticity, and, I would encourage you, with your machine, to consider other options for mounting this table before you start 'hackin and hewing'.

My intention was to NOT permanently alter the machine by drilling holes, or permanently 'defacing' any part of the machine. One day this machine will be sought after for its original state.

Your Old Dog
02-18-2008, 05:48 AM
Thanks for the offer LOD but it's a done deal now! I found a way to do it without any modifications to the RIT or the shaper what-so-ever. I simply made an acetal bushing. One end fits the vice table on the shaper and the other is a tight fit into the RIT. Two keys which of course were different sizes and needed to be machined and I'm all done. It works like a champ! I have to weigh over the next few days just how much use it will get as I know it will pay for my new (used) 10" pedestal grinder if I eBay it.


As a 'purist' with a pristine machine, I appreciate the condition and authenticity, and, I would encourage you, with your machine, to consider other options for mounting this table before you start 'hackin and hewing'.

Let me add that my SB, nor any of my stuff is in pristine condition. If it were I could not have afforded it therefore all my machines are working machines and not kept as collectibles. I leave that to the guys like you who have patience! My shaper RIT was a different story only in that it has never been used so I thought it might be worth more if not tampered with. Otherwise, I would have welded a plate to the bottom of it without much hesitation. Shapers better than mine will be a dime a dozen when I kick as all us Boomers start to fade away. Our families would be lucky to get scrap price!

http://bbs.homeshopmachinist.net/http://inlinethumb23.webshots.com/33558/2519320760102651310S600x600Q85.jpg (http://good-times.webshots.com/photo/2519320760102651310UUKGHc)

http://bbs.homeshopmachinist.net/http://inlinethumb49.webshots.com/41008/2777613660102651310S600x600Q85.jpg (http://good-times.webshots.com/photo/2777613660102651310RxzlHm)

http://bbs.homeshopmachinist.net/http://inlinethumb49.webshots.com/41008/2777613660102651310S600x600Q85.jpg (http://good-times.webshots.com/photo/2777613660102651310RxzlHm)

Your Old Dog
02-18-2008, 07:02 PM
I put the Atlas RIT up on ebay. I don't think I'll have enough use for it and I'd sure like to be able to say I have nothing in my pedestal grinder! I included the setup I used to adapt it to my Southbend shaper. That might widen the market. If I'm lucky, this might make up for some of the sour deals I've made over the years.