Well my new PCNC arrived and it's time to put it on the stand!
I took some measurements with some flat tool steel of the pads and
found them to be a bit catywumpus. So I shimmed to make the stock
reasonably flat as a starting point.
Are there any suggestions out there to keep the casting from flexing
when then bolts are tightened down?
Where would you measure to determine if it is?
Would it cause the machine table to bow too?
ie, tram would indicate that it's bending?
Well my new PCNC arrived and it's time to put it on the stand! I took some measurements with some flat tool steel of the pads and found them to be a bit...
... flexing ... I believe the current recommendation is to just 'hand tighten" the bolts. Their purpose is to just keep the base from moving around on the pads...
A good place to start is to put an indicator on a 4 to 6 inch arm in the spindle and check the table surface. (don't turn it on!!!) You will find that...
I think that shimming the bed must be the last resort, not the first, for correcting a tram error. Tramming the table tells you that the spindle is not...
Since shimming the base takes a few seconds and re-drilling and re- pinning the spindle or unbolting the column are major undertakings I think the best place...
Yup. The pads weren't even close to being coplaner. Placing a piece of ground .75 x 4" O1 across the pads revealed a high-point to low-point discrepancey of...
Or suck up the stand. Try levelling the feet. Alternatively shim between the machine base and the stand with the 20 thou you measured. It's unrealistic to...
As Terry mentioned, you don't want to torque down much more than hand tight on the mounting nuts. I've heard that the mill certification checks are performed...
Guys, In the latest version of the manual<http://www.tormach.com/document_library/PCNC1100-3-II-UM-A2-2b.pdf> we have added some comments and guidance on...
I just got the 4th axis for my Tormach a few months ago and just started using it. How can you G-code a simultaneous movement of XY & A where XY is at one...
What happens if you use G00 X0.5 Y0.5 A45.0 It seems to me you will get the max rate for the slowest axis and the other two will move as they have to. Joe in...
Yes, with G0 I will get the max rate but going 65ipm on XY with an 1/8in bit on alu will break bits. Need the XY around 15 to 20ipm and A at around 500 degree...
The best would be to program it with a good CAM software. If you have a decent 3D CAD file, I can try something for you using Mastercam. Yes, when you do...
OK I just tried it with G00 G91 X1.0 A360 It went around nicely 30 seconds and a 1 pitch spiral. I checked the feed readout while it was going around and it...
Yes, remember these are interpolated moves. No need to over think the process. You never specify axis speed in 3 axis contouring, why would you think it...
Humm. maybe I'm over thinking like you said. but when I tested it a few nights ago something like G01 X1.0 A360 F1350 . will get X going to max speed which...
It will split up the movement between the three axis' and you will wind up with the A axis determining the speed of movement. I will go try it but I think...
I started a program today and it went to drill the first three holes correctly, then I heard a thump, and the remainder of the holes were off. When it went...
Additional info. The skip was in the Y-axis. _____ From: tormach1100@yahoogroups.com [mailto:tormach1100@yahoogroups.com] On Behalf Of Sites-TFJ Sent: Tuesday,...
I did. The first three holes were off, the rest were down the center of the previously drilled holes. (The first thing I did was to check the code thinking...
... Jim, I have had the same issue in the Z. Occaisionally it will make a thump or be-bump sound and be off in the + Z direction. It occurs sporadically and...
I had a similar problem on my Mach controlled mill, occasionally "ticks" on the Z axis. In my case it turned out that a faulty CD-ROM was generating spurious ...
Are you guys running your mill on a perfectly clean and minimum build PC? No virus scan, network access, or other programs running. No extra hardware in the...
Sometimes it's just necessary to state the obvious though. No, it is a minimum config, but the CD was an interesting consideration, it's an old HP writer, I'll...
... Jim, some network interfaces that wake up occasionally to "look around" have also causes problems for Mach users, I believe this can be fixed by changing...
Jack the Z up off the work and run the program "air drill" and see if it does it again minus the work. It could have tried to move the y while a drill is down...
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