Bob's Super Simple 4th Axis

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GottfriedK
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Re: Bob's Super Simple 4th Axis

Post by GottfriedK »

That worked in Carveco

John

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Bob
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Re: Bob's Super Simple 4th Axis

Post by Bob »

Good news!
Here's the next one:
4th axis rack for pinion gears.dxf
(105.13 KiB) Downloaded 139 times
Bob
"Focus"
Antonie Van Leeuwenhoek (Developer of the microscope.)

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Bob
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Re: Bob's Super Simple 4th Axis

Post by Bob »

The last part:
4th axis pinion gears (2).dxf
(91.56 KiB) Downloaded 149 times
I told you it was simple...
For the rest of the directions and modifications you'll need to refer to the other 18 pages of this thread.
Keep me posted.
Bob
"Focus"
Antonie Van Leeuwenhoek (Developer of the microscope.)

GottfriedK
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Re: Bob's Super Simple 4th Axis

Post by GottfriedK »

Thanks Bob

John

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Bob
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Re: Bob's Super Simple 4th Axis

Post by Bob »

You're welcome. Have some fun with this.
Bob
"Focus"
Antonie Van Leeuwenhoek (Developer of the microscope.)

sajurcaju
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Re: Bob's Super Simple 4th Axis

Post by sajurcaju »

I realize this is an old thread; hopefully someone is still listening!

First, great idea Bob, and the others who have contributed.
The pinion gear(s) have a plain disk attached. What is it's purpose?
Maybe a related question, how do people attach the work?

Thanks,
Steve

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Bob
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Re: Bob's Super Simple 4th Axis

Post by Bob »

Steve,
If you give a careful read through the different contributions to this thread, your questions will all be answered.
Bob
"Focus"
Antonie Van Leeuwenhoek (Developer of the microscope.)

sajurcaju
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Re: Bob's Super Simple 4th Axis

Post by sajurcaju »

Having read through the entire thread (3rd time, I think), I found a partial answer:

Question: what is the purpose of the plain disks attached to the pinions?
On page 8, Ruhnau refers to a wheel on the dead center supporting the work piece. So in this case, the plain disk is riding on the spoil board, there is no pinion gear on that end. This makes sense.
Question: how is the work attached?
On page 15, Bob says "the wood is attached to the gear with screws". I'd seen this, but forgotten.

I still have the same first question.
1. What is the purpose of the plain disks attached to the pinions? The pinions get direct support from the racks, so it doesn't seem to be useful for support.

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Bob
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Re: Bob's Super Simple 4th Axis

Post by Bob »

Steve,
It was an attempt to shield the gears from sawdust. It would also serve as a guide to keep the work centered. Probably not even necessary. Try it without disks. It might work just as well using compressed air. Since this was a prototype, there were several parts designed into the project that were not used. And, other members added some nice components.

Bob
"Focus"
Antonie Van Leeuwenhoek (Developer of the microscope.)

sajurcaju
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Re: Bob's Super Simple 4th Axis

Post by sajurcaju »

Aha! Thanks for that, a shield right where most of the chips show up.
I am concerned about keeping chips out of the rack, haven't figured out anything new. My dust collector does a good job on the flat, it will certainly leak on rotary work. We shall see.

Steve

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