z axis

[massajamesb]

I am kinda new at the whole cnc thing, and I am about to build my own table. Can anyone on here help me with designing a automatic z axis, and give me a heads up on any shareware that can control xyz axis, torch height, and turn torch on and off? how about free programs that have nesting? or am I just gonna have to fork out some moola to aquire a copywrited program. If so can anyone suggest a lowbuck program? thanx

[Weldtutor]

Originally Posted by massajamesb Can anyone on here help me with designing a automatic z axis, and give me a heads up on any shareware that can control xyz axis, torch height, and turn torch on and off? how about free programs that have nesting? or am I just gonna have to fork out some moola to aquire a copywrited program. If so can anyone suggest a lowbuck program? thanx

Design of your "automatic Z axis" would involve:
-vertical guides that could be pipes & skate bearings, sliders, linear bearings & shafts etc.
-a power transmission method such as an acme threaded rod, rack & pinion gearing, chain drive or other.
-drive motor.
-torch heigth control package to interface between the PC controls & the position of the torch relative to the work surface.
A low cost control program worth consideration, that has many features is Mach3.

[massajamesb]

thanx for the help man. does your table have a computer controlled z axis? or is it just manual? One more question, I am looking at motors and drivers, what does anyone suggest? I have heard good things about gecko, but I was curious about the package deals on hobby cnc. does anyone have input, good or bad? thanx again

[Weldtutor]

Originally Posted by massajamesb does your table have a computer controlled z axis? or is it just manual?

The Z axis is motorized for positioning. It does not have an automatic voltage sensing torch heigth control to vary torch position during the cutting process.