Shox Dr
Chief Engineer to Carlos Fandango
- Messages
- 17,993
- Location
- East Yorkshire
Well I got ******all else to do today so I'll show you lot what I've done so far.
But first a bit of back ground, I've been after a Rotary table for sometime now. The problem is 2nd hand ones are thin on the ground, and tend to be massive and heavy. You can buy New ones from China however one of those is going to cost you 500quid even before The Customs man wants his Duty and VAT
So been the tight Northern Monkey I am I decided to build one.
After some time searching for a suitable electric motor I found a guy selling off a load of Brand new Conveyor motors from a bakery. So I bought 8 of them
They are a lovely little motor only 14w but the important thing is they have a Reduction gear box, reducing the Motor RPM from 1400 down to 2.06 that's 630:1 Because of the large reduction the torque is unreal. And they work in both directions.
So stick a variable speed controller on and off you go. NO not as simples as that, I spoke to 4 different companies who sent me their "sure it will do the job" bits of kit, only to find out the motor at slow speed would lose all its torque. No good, no good at all. Finally I found someone who knew what they were talking about, I sent them a Motor so they could make sure it would work. It did, wooho
It turns out the motors aren't single phase but 3 phase, and because of this a small 1ph to 3ph invertor is the speed controller to use, not only that the guy tells me the motors alone would set you back 300quid each, without the reduction box But as they are such a low wattage the things will last for ever
So I bought 8 of those as well
Problem is I've now spent more than a yellow one would have cost me
I now have 8 motors and 8 controllers, so best start to build one.
The frame is 12" x 12" x 14" made from 20x2mm box. Mitred corners, welds ground flat on the outside so it doesn't catch, the frame will be powder coated black once finished.
I'm waiting on a Pillow block to support the shaft. The earth strap is from the local motor factors. No volt switch, 2 way switch , Pot and Plastic box, off tinter web. The shaft is 3/4" Dia 304 stainless I had, This will fit to a 1 1/8"x12TPI threaded head so you can fit a Myford Faceplate or Chuck. I found the round plate in a corner and been me couldn't wait for the Myford bits to turn up, so quickly knocked up this face plate for the prototype.
So here it is, I don't like the ground clamp point so I've ordered a Female Dinse Socket. I'm also fitting a pair of adjustable armrests that will also double up as a torch holder.
But first a bit of back ground, I've been after a Rotary table for sometime now. The problem is 2nd hand ones are thin on the ground, and tend to be massive and heavy. You can buy New ones from China however one of those is going to cost you 500quid even before The Customs man wants his Duty and VAT
So been the tight Northern Monkey I am I decided to build one.
After some time searching for a suitable electric motor I found a guy selling off a load of Brand new Conveyor motors from a bakery. So I bought 8 of them
They are a lovely little motor only 14w but the important thing is they have a Reduction gear box, reducing the Motor RPM from 1400 down to 2.06 that's 630:1 Because of the large reduction the torque is unreal. And they work in both directions.
So stick a variable speed controller on and off you go. NO not as simples as that, I spoke to 4 different companies who sent me their "sure it will do the job" bits of kit, only to find out the motor at slow speed would lose all its torque. No good, no good at all. Finally I found someone who knew what they were talking about, I sent them a Motor so they could make sure it would work. It did, wooho
It turns out the motors aren't single phase but 3 phase, and because of this a small 1ph to 3ph invertor is the speed controller to use, not only that the guy tells me the motors alone would set you back 300quid each, without the reduction box But as they are such a low wattage the things will last for ever
So I bought 8 of those as well
Problem is I've now spent more than a yellow one would have cost me
I now have 8 motors and 8 controllers, so best start to build one.
The frame is 12" x 12" x 14" made from 20x2mm box. Mitred corners, welds ground flat on the outside so it doesn't catch, the frame will be powder coated black once finished.
I'm waiting on a Pillow block to support the shaft. The earth strap is from the local motor factors. No volt switch, 2 way switch , Pot and Plastic box, off tinter web. The shaft is 3/4" Dia 304 stainless I had, This will fit to a 1 1/8"x12TPI threaded head so you can fit a Myford Faceplate or Chuck. I found the round plate in a corner and been me couldn't wait for the Myford bits to turn up, so quickly knocked up this face plate for the prototype.
So here it is, I don't like the ground clamp point so I've ordered a Female Dinse Socket. I'm also fitting a pair of adjustable armrests that will also double up as a torch holder.
-
PICT0592 (Medium).jpg40.9 KB · Views: 5,471
-
PICT0593 (Medium).jpg111.2 KB · Views: 5,272
-
PICT0587 (Medium).JPG39.3 KB · Views: 5,307
-
PICT0588 (Medium).JPG41.5 KB · Views: 5,258
-
PICT0589 (Medium).jpg69.9 KB · Views: 5,440
-
PICT0590 (Medium).jpg75.6 KB · Views: 5,281
-
PICT0591 (Medium).jpg61.1 KB · Views: 5,217
Last edited: