Messages

11

General Mach Discussion / Re: Limiting 5th axis rotation, new setup

« on: September 15, 2018, 11:02:52 AM »

Hello,

This makes me think I should only rotate 100. (for now that would be an acceptable solution for my current project)
With either one or two switches, the Home would be UP (Zero).

Otherwise Home would be at 90cw or 90ccw.
(Is that a bad thing. It seems like something I dont want to do)
Novice cnc'er here.

12

General Mach Discussion / Re: Limiting 5th axis rotation, new setup

« on: September 15, 2018, 09:49:38 AM »

Thank you for the above average reply Joeaverage.

I would much prefer two switches here for safety.
But I have not seen a DIY 5 axis with switches on the 5th.
Can you point me to one? A video, blog or tutorial.

I can probably have some metal brackets made to mount two switches for my 5th.
That being said,
1) being that close to cutting, wont the switches need constant cleaning to work correctly? (I'm cutting brass and hardwood together, small bits, lots of dust)
2) Is there room left on a DB9slim for wiring two more switches? Should/could I try a single switch, like my Y, that uses two metal plates at each end of travel, to reduce wiring?
(its a real pain to get more than two wires in these screw terminals)

My DB9 wiring is as follows;
Both X's Signals (white) go to 1
Both X's Grounds (black) go to 9
Both X's 12v (Red) go to 6
Y signal (white) to 2
Y Ground (black) to 8
Y 12v (red) to 7
Z Black with white strip to 3
Z black to 8

13

General Mach Discussion / Limiting 5th axis rotation, new setup

« on: September 14, 2018, 10:51:04 PM »

Hello,
New to Mach3.

I have a new gantry style 5 axis that I am setting up.
It has a 2.2 Water Cooled Spindle.
As a practical matter, I don't need my 5th axis to rotate anymore than 100cw to -100ccw (if Zero is Up).
What I dont want to happen is for it to rotate 360 by accident with these water hoses attached.

I have Limit Switches on X, X+, and The Y Switch has to metal plates at Y and Y+. The Z has a Touch Plate w/alligator clip.
The Limits double as Home Switches (at least that is the plan)

I am confused by the Home Negative checkbox in Home/Soft Limits.
Does this mean I can only tell my 5th axis to either rotate 0 to 100cw or 0 to 100ccw? With the appropriate Home Neg setting?
(Otherwise the Homing could cause a full rotation if it started on the wrong side of Zero)?

Is there any other way than Soft Limits, to tell my 5th axis not go past x degrees, when Homing, Jogging or any other time that suits its fancy?

Thank you

14

Show"N"Tell ( What you have made with your CNC machine.) / "Black Scholes", Coin #1

« on: September 02, 2018, 12:53:34 AM »

Hello,

New member here.
I've been using LinuxCNC for a few years on the PocketNC, a desktop 5 axis with a small work area of approx 4x4x3.
I recently upgraded to a 12x20x5 gantry style 5 axis with a 2.2kw water cooled spindle.

While working with the PocketNC, I started a series of approximately eight sculptures.
Made with Mexican 1/2 & 1/4 in thick Royal Ebony (Katalox) laminated with 0.04in plate Cartridge Brass.
The finished cut wood is them stained with liquid Graphite.

Only one coin was finished before I traded up, so I am looking forward to finishing the rest.

Blog post here:
https://rs3art.blogspot.com/2017/11/z-2-cnc-dark-money-black-scholes.html

Sales website here:
https://www.saatchiart.com/art/Sculpture-Black-Scholes/660828/3955987/view