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I've had my X3 in my apartment for.... 4 years now?

At some point along the way I removed the gears and use a pulley system now which is much quieter. I think my neighbors approved.

I run flood...

Please see drawing. IGES available. You supply material. I am looking for a quote on 3 parts.

Thanks!

Still a WIP:
http://img826.imageshack.us/img826/4663/imagepk.th.jpg
http://img88.imageshack.us/img88/9376/imageoda.th.jpg

My z gibb was out of whack from the factory- I think most of them are. One side was ground nice and flat but the other... Like a banana. I took the z saddle off and measured the taper with some gauge...

Hoss, how do you feel about that 6" LMS vise. I am considering the 4". Also considering cleaning the vise I have up with a surface grinder.

The vise is a 2". After pulling it off the table and taking a good look at the geometry, there isn't room for the pin to be moved up to create an angle of anything less than 45*... so more force will...

gabedrummin,
Interesting- I didn't know they were intended for grinding.

MrWild, allenj20, WaveDude
I completely understand what you guys are saying- just graduated with an ME degree :)
...

Andre' B;
The blocks were cut from an extruded square. When they were mounted in the vise, the raw, un-machined sides were put into the vise.
The fit and finish on the toolmakers vise seem to be...

Hey All,

I'm having a bit of a problem with a toolmakers vise that I recently purchased . I am new to this type of vise and have chucked it up to inexperience- hope I am right. I've attached a...

I have the machine assembled and have measured the deflection. I don't have a load cell to measure the force applied, so this whole thing is fairly subjective but I can say that the rigidity has...

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Angle is not 60*. I believe it's more like 57* if memory serves correctly but that's just a guess.

I'd regrind one side (longwise) if you can get access to a surface grinder. I matched the gib to...

slektning, I have solid models that can be provided but not prints.

Cadmonkey, how did you know how much torque to apply to the nut locking the AC bearings in?

I have a dial toque wrench but...

Keith,

Can we get some details on what you plan on developing?

Will the lathe be based off an existing manual lathe converted to CNC with steppers and electronics or do you plan to start from...

Hi,

I'm interested in purchasing a CNC lathe.

My budget is under $6,000. I'm looking for something that can hold a +/- .0005 tolerance, that is rigid enough to cut steel and that can make use...

One thing to consider is that the Z gib on the x3 is tapered longways. The y gib on the x2 is parallel longways.

I was in the same situation about a month ago. Like you, I planned on machining a brass gib and running with it.

After getting the machine apart, I noticed just how off the stock Z gib taper was...

Agreed. Good to hear that you didn't see any deflection, Hawk

AC bearing should be arriving today and the boring head tomorrow. I should get to machining the bearing pockets on Wednesday or...

As you say, Hawk, the disagreement boils down to assuming that that joint is rigid or not.

You say that your joint is rigid. I always thought that that joint was rigid on my machine as well but...

Pictured is the bracket and joint that are in question. It is pinned with ~.160" dowels a half inch apart and the bolted together at the two outside holes. The fit is poor. I can wiggle the bracket...

I had the column shimmed prior to doing these changes in order to tram head. Regrinding the Z gib may have changed things but I expect it to still be out of square.

Interesting method you suggest...

Got it working.

.011 thou max deflection without backplate

.007 thou max deflection with backplate

It is interesting to note that the deflection with backplate is almost completely at the...

Teyber, that prototrak is indeed a very nice machine!

I've ran a couple more simulations as hawk suggested but SW seems to crash on the closed column simulation. I've ran it three times now trying...

I lengthened the lever arm on the head to get a more accurate representation of deflection.

The results look much more promising. Torsion plays a much bigger role in deflection when the lever are...

The ball nut will mount to the head via a machined part, through the slot in the column. As Hawk points out, the head won't be feeling anything differently.

However, while I had the machine apart,...

And here is a simulation with the backplate.

I am limited to using simulation express with solidworks and so can only simulate using one material. Therefore, the backplate is simulated as cast...

I've done some FEA on the assembly and the results are interesting.

The bottom surface of the column is 'fixed' and a 500lb load is applied to the flat of the cylinder, representing the head. The...

My primary goal was to increase the rigidity of the column in the x direction.

The joint is pinned and bolted- I probably used too many fasteners though I rather have too many than too few.
...

Hi speedy,

I'm in a similar boat- looking for some AC bearings.

I'm looking at these guys here to replace the thrust bearings on my Z axis X3 (will have to bore out the existing bearing block)....

Hey All,

Thoughts or concerns before I take the plunge? I'm mostly worried about sealing between the doors. This design beats the hell out of what I currently have because I can open the doors...