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General Mach Discussion / Re: Z axis moves down after program ends
« on: December 14, 2013, 01:12:10 PM »
Show us the Goode for the problem arcs.
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My Z axis moves very freely. When I reach the end of the G code program the motors shutoff and the z axis will move down which will lose my z "0".
What is the M2 on N60 for? I had to delete it just to get Mach to load the gcode.
so that the machine will stop after making that peck. I pull out the part and then measure to see that everything is in the right location ( centered) put the part back in adjust my DRO's and hit cycle start for the program to continue. I didn't have to delete that.
M98 (SubName.tap) to call an outside sub.
Gocde Programs with outside subs work just fine in mach 3
Lifespan is qouted at about 100,000 full strokes. Mounting position should be shaft end down so seal gets oil. One of mine is up and one is down, and my arrangement puts some side load on the shaft. So I expect the life of one of them to be quite short. So we'll see, but a replace once a year or so wouldn't be too awful.I did put a squirt of oil in there when it was new, as I had read that somewhere (was it you? :-) ). Yes, I can see a lubricator making a mess all over the work under it as I have the cylinder mounted. I just looked and that cylinder was $39.97 from McMaster (http://www.mcmaster.com/#6498K861) so like you said, replacing it wouldn't be a big deal. 5 million strokes a year; I use mine quite a bit, but will never see that in a lifetime! Thx for the input.
I used to build pneumatic packaging machinery using cylinders like you used. I did away with lubricators because they made more mess than they did good. However I always shot a bit of air lube oil in both ports on the cylinders before attaching the lines. You can get 3 to 5 million stokes on those cylinders. We easily put 5 million strokes on in a year.