My Linear tracks

Hey, some of you requested info on my linear track that I made.

http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/Lloyd%27s%20Project/
02-07-00003.png

All I did was sit down, and brainstorm how to make a simple system, and
I came up with this.

I have 12 set screws in each aluminium square tube, and I have four
square tubes. Two tubes for each axis. Shaft collars to hold the shaft
in place.

Took me about 2 hours to make it all (all 4 sliders), because of some
grinding of plastic I had to do... and tapping (I hate manual tapping)

If you plan on making something similar, I suggest to you that you make
two bushings at the same time. And keep track that they are a pair.

What I did to make the bushings was this:
1.) Grind only two sides of large block of plastic to fit snug into the
tube. (So you have a square edge to align with tube)
2.) Cut to desired length (I used 1.5")
3.) With a drill press, drill (I used a bracket to hold each piece in
place, so all I had to do was measure the first one.) [NOTE: you may
want to reverse the block, and chase it down in reverse]
4.) Mark the two flat sides with marker, label on half A and B (C and D,
E and F, and so on)
5.) Cut in half.

Now you have two bushings.

My sliders work well and I can't feel any play in them. But than again,
I haven't assembled my entire CNC mill.

--
Lloyd Leung
Lloyd@...


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