Burgmaster 0B-Wobbly downfeed problem
 

Greetings:

Anybody out there done any work on a Burgmaster 0B? I just picked one
up at a sale for cheap enough that I was willing to take a risk.
The reason it's a risk? The downfeed wobbles.

The whole turret head assembly feeds up and down on a single round
shaft that slides through an upper assembly that has the downfeed quill
and gear. The turret assembly is wobbling side-to-side because the
main up-and-down feed shaft has become loose in the upper assembly, and
the shaft is rotating slightly in the grip of the upper assembly.

Normally, there'd be a keyway or spline on the shaft, and it'd be a
simple fix. This being a Burgmaster, *nothing* is simple. There isn't
a keyway. Neither is there a bearing flat on the side of the shaft.
Or any other obvious method of preventing the round shaft from
rotating. I've looked for setscrews, or the like, but there aren't
even any holes anywhere near that shaft. The only thing I can think of
is that somehow the face of the rack gear teeth bear against the width
of the rack and stabilize it that way, but that's just nuts.

I found the manual online, and read that, but no help. The thing I
noticed was all the specialized tools and jigs required to really rip
the thing apart. This made me think it was better to ask here before I
started trying to wing it.

So...anybody worked on a Burgmaster 0B? How on earth does it keep that
main feed shaft from rotating?

Thanks,
Brian.

Burgmaster 0B-Wobbly downfeed problem
 

On Thu, 08 Nov 2007 21:09:35 -0800, Alberic wrote:


I found the manual online, and read that, but no help. The thing I
noticed was all the specialized tools and jigs required to really rip
the thing apart. This made me think it was better to ask here before I
started trying to wing it.

Where did you find the manual? I also need one.

Gunner, pondering on your problem


Political Correctness is a doctrine fostered by a delusional,
illogical liberal minority, and rabidly promoted by an
unscrupulous mainstream media, which holds forth the
proposition that it is entirely possible to pick up a turd by the clean end.

Burgmaster 0B-Wobbly downfeed problem
 

Gunner:

The manual can be found here
http://www.burgmaster.com/Mach-Tool/...B/index-0B.htm
There are parts drawings, and the last link on the right has a PDF of
the whole manual. All 15 pages of it. The quality of the drawings
isn't great, but there it is.

So, does your 0B wobble? Any clue why not?

Regards,
Brian.


In article , Gunner Asch
wrote:

On Thu, 08 Nov 2007 21:09:35 -0800, Alberic wrote:


I found the manual online, and read that, but no help. The thing I
noticed was all the specialized tools and jigs required to really rip
the thing apart. This made me think it was better to ask here before I
started trying to wing it.

Where did you find the manual? I also need one.

Gunner, pondering on your problem


Political Correctness is a doctrine fostered by a delusional,
illogical liberal minority, and rabidly promoted by an
unscrupulous mainstream media, which holds forth the
proposition that it is entirely possible to pick up a turd by the clean end.

Burgmaster 0B-Wobbly downfeed problem
 

Alberic wrote:

So...anybody worked on a Burgmaster 0B? How on earth does it keep that
main feed shaft from rotating?

I've worked on a Burgmaster but never deep enough to help you. I do thank
you for the manual link though.

Wes

Burgmaster 0B-Wobbly downfeed problem
 

On 9 Nov, 05:09, Alberic wrote:
Greetings:

Anybody out there done any work on aBurgmaster0B? I just picked one
up at a sale for cheap enough that I was willing to take a risk.
The reason it's a risk? The downfeed wobbles.

The whole turret head assembly feeds up and down on a single round
shaft that slides through an upper assembly that has the downfeed quill
and gear. The turret assembly is wobbling side-to-side because the
main up-and-down feed shaft has become loose in the upper assembly, and
the shaft is rotating slightly in the grip of the upper assembly.

Normally, there'd be a keyway or spline on the shaft, and it'd be a
simple fix. This being aBurgmaster, *nothing* is simple. There isn't
a keyway. Neither is there a bearing flat on the side of the shaft.
Or any other obvious method of preventing the round shaft from
rotating. I've looked for setscrews, or the like, but there aren't
even any holes anywhere near that shaft. The only thing I can think of
is that somehow the face of the rack gear teeth bear against the width
of the rack and stabilize it that way, but that's just nuts.

I found the manual online, and read that, but no help. The thing I
noticed was all the specialized tools and jigs required to really rip
the thing apart. This made me think it was better to ask here before I
started trying to wing it.

So...anybody worked on aBurgmaster0B? How on earth does it keep that
main feed shaft from rotating?

Thanks,
Brian.

I too have a small Burgmaster, great machine.

If you look on the back of the fixed part of the turret you should
find a projection. On this should be a fork, and on each prong a ball
race. The parts are sized so that the two ball races run along the
inside surfaces of the columns, and this prevents the turret from
rotating around it's column. If the bits are missing they should be
easy enough to make. Look on the column side view parts drawing and it
is shown mounted in line with the the long bolt passing through the
centre of the head.

Hope this helps,

Dave.