Hi.

I have a project making repro stocks for old norwegian rifles. Obvious, using a cnc-mill for the cutting of barrel channels and receiver slot would be a big advantaged.
Well, the Taigs z-height above working table and the x-axis lenght and travel is far less then requiered milling a 1200mm rifle stock. So, i made an add on x-axis, travel 1270mm (50"). Made an extention plate so I could bolt the spindel/motor some 50-75 (2-3\") heigher. The x-axis is \"bolt-on\" the taig table. I took the stepper motor from the x-axis and mountet on this \"add-on\" axis.
With this add-on axis, I was out after the features, not any high end tollerance machine. The slim line construction give flex all ways, and I have problem with \"newton\" and gravity, as when the axis in either end, the momentum made from the overhand to the y-axis is so high that it bind the y-axis travel. I fixed that with a rubber band mounted to the roof (Seen in the picture), that holds the tabel up as it stretch more and more when the x-axis moves to the end. Took me some late evenings/nights making this, but after 4 stock cutted now, I have probebly earned the time back. Not to forget the quality from the milling. Done this the manuell way would give me less quality and a lot more houers, probebly no stocks at all

http://www.servimg.com/image_preview.php?i=1&u=14276261

http://i87.servimg.com/u/f87/14/27/62/61/dsc00515.jpg

mussonor

Could you please try loading the pic again, it is not showing-

Thanks,
Dave

mussonor...Nice setup...

Thats pretty much what I did also but I only went 5 inches over on X so that I can use the Entrire Table.......So how long is your X Leadscrew now...?

you can do the Same thing with Y axis....I moved my Y axis bed out 1 set of holes and added a 2 inch spacer and added 3 inches on the Headstock to Bring it out...I have Easy 8 inches of Travel in my Y axis now .....The best part is no Flex that I can tell.....My Engravings in Aluminum Look just as good now as they did in Stock Config.

Hi.

Leadscrew is now 1500mm, I bought two 1000mm in M12-threaded bars, and welded them togehter, and made new threads just over the are were I welded, then cut to 1500mm.
http://www.motek.no/pix/2879/GJENGESTANG_1.jpg

Used a connection nut for these bars as the lead screw nut:

http://www.biltema.no/products/productimage.asp?iItemId=91468

Bought 4 linear 16mm bearings on ebay for the 16mm leading bars.

Very nice job, thanks for sharing.

If you ever get closer pics of the bearing system, I'd love to see those as well to try and better understand what you've done-

Thanks,
Dave

Hi Fretsman and others
Took some closer pictures of the add on x-axis while milling this evening. Not sure if they make more sense of the very simple construction.

http://www.servimg.com/image_preview.php?i=7&u=14276261
http://www.servimg.com/image_preview.php?i=9&u=14276261
http://www.servimg.com/image_preview.php?i=13&u=14276261
http://www.servimg.com/image_preview.php?i=12&u=14276261

Actually, that's great I understand what you did now, and yes, I'm a little "slow" and thanks for the great pictures-

Dave