Rotary table expansion

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Mr Ron
Posts: 2126
Joined: Tue Dec 22, 2009 12:36 pm
Location: Vancleave, Mississippi

Rotary table expansion

Post by Mr Ron »

Previously I posted a question on setting up a RT and now here is how I fixed the problem: The RT I have is 6", so I took a piece of aluminum plate, 12" diameter and bolted it to the RT on spacers so it sits 3/4" above the RT top. I then milled 4 slots, 90° apart to accomodate tee nuts. I bolted it down using hex head bolts. I then took a skim coat over the bolt heads for a flat plane. The aluminum I used was a 7000 series aircraft alloy. I won't be doing much work on steel; mostly aluminum. 3/8" would have been sufficient for spacers, but I had 3/4" stock on hand. If I come across some 3/8" stock, I may switch them out.
Mr.Ron from South Mississippi
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ken572
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Joined: Sun Mar 14, 2010 8:11 pm
Location: Mesa, Arizona. 85201-1517

Re: Rotary table expansion

Post by ken572 »

Good Morning :!: Mr. Ron. :D

Thanks for your update on yourRTmodification.

How about some pictures.. :idea:

Ken. :)
One must remember.
The best learning experiences come
from working with the older Masters.
Ken.
Mr Ron
Posts: 2126
Joined: Tue Dec 22, 2009 12:36 pm
Location: Vancleave, Mississippi

Re: Rotary table expansion

Post by Mr Ron »

100_0198.JPG
100_0200.JPG
Here are two views of my RT modified from 6" to 12".
Mr.Ron from South Mississippi
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ken572
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Joined: Sun Mar 14, 2010 8:11 pm
Location: Mesa, Arizona. 85201-1517

Re: Rotary table expansion

Post by ken572 »

Mr Ron :!:

VERY NICE JOB INDEED :D

EDIT: :idea: I think I will have to make one

like yours, but with one spacer ring all the way

around which should give alittle more support. :)

Ken. :)
One must remember.
The best learning experiences come
from working with the older Masters.
Ken.
Jerry_in_IL
Posts: 13
Joined: Sat Jan 04, 2003 10:05 am
Location: IL

Re: Rotary table expansion

Post by Jerry_in_IL »

This kind of extension are found on the net in several places. One variant I used was a solid table with machined buttons that fit the original table T slots so removing the extension can be repeatable within limits.
I didn't use T slots in my extension but just drilled 1/4 inch holes at one inch spacing in concentric circles on the extension plate. I just use hold downs for set ups. I didn't want to use valuable vertical room on my little Clausing mill.
My extension is made from 1" 7075 Al plate.
Mr Ron
Posts: 2126
Joined: Tue Dec 22, 2009 12:36 pm
Location: Vancleave, Mississippi

Re: Rotary table expansion

Post by Mr Ron »

ken572 wrote:Mr Ron :!:

VERY NICE JOB INDEED :D

EDIT: :idea: I think I will have to make one

like yours, but with one spacer ring all the way

around which should give alittle more support. :)

Ken. :)
A one piece spacer ring would restrict tee nut slots outboard of the ring.
Mr.Ron from South Mississippi
User avatar
ken572
Posts: 2600
Joined: Sun Mar 14, 2010 8:11 pm
Location: Mesa, Arizona. 85201-1517

Re: Rotary table expansion

Post by ken572 »

Mr Ron wrote:
ken572 wrote:Mr Ron :!:

VERY NICE JOB INDEED :D

EDIT: :idea: I think I will have to make one

like yours, but with one spacer ring all the way

around which should give a little more support. :)

Ken. :)
A one piece spacer ring would restrict tee nut slots outboard of the ring.
Mr Ron :roll:

You thought I was ignoring restriction comment didn't you..hah. :lol: :lol:

Nope, you brought up a good point. :wink: I think I will go to a 1" or 1.25"

thick spacer ring and cut an abundance of Tee Slots above the original

table, which will fix the outboard problem you mentioned, and also raise

me up a little more, which will be helpful for most of the jobs I will do on

my HF-44142 3in1 Mufti-Machine. It will be an Uninstall/Install Accessory

Plate anyway.:D

Ken. :)
One must remember.
The best learning experiences come
from working with the older Masters.
Ken.
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