It has been decided! After almost a year with the CNC Taig, it's time I install limit switches! Last night after machine/comp error!
While away from the machine, the machine decided to plunge into my table. I noticed this today! Put a nice hole in my table and in the process, also snapped my endmill in half!
Limit switches are next on my list of things to do with the machine! God, I hate when things like this happen.
Just thought I needed to get this off my chest
Because If I set the limit switch low enough, it will trigger the z-axis to stop before is wants to destroy my table.
Ya! I would like to know as well how a limit switch on the Z axis will stop the end mill from damaging the table. I am going to install some as well.
....I never cut anything really that is that low to the table except for yesterday. The machine went haywire on me and put a hole in my table, if I have a limit switch there that will act like a Safety switch, the z-axis will never go down that far????....
Longer Tools will always cut deeper.
Regardless where you set your Limit switch to?
Maybe you can setup a temporary adjustable Limitswitch, that can be positioned for a peticular toollength on a long/overnight program run.
Go with Torsten's advice. Sliding limits, trigger or switch, are used on many industrial machines.
Anyone who says "It only goes together one way" has no imagination.
ok speed custom I am new at this to so keep this in mind.....as far as I have seen thus far as you write your program of G-code you can establish a series of depth cuts and a piont at which to NOT cut below based on your Z zero in relation with your part depth......if I am off base just ignore. I have have my taig go bonkers and cut to much on a roughing/profileing pass but that was around 8mm deep in 6061 and it just stopped the psindle....make me jump like a rabbit in shooting field to....chuckles
Soft limits. use home switches (opto interrupters) on X and Y, but not Z. If you mill goes off the deep end often (more than once), maybe you should be addressing the root cause and not the symptom.
please document your progress. I've been wanting to add limit switches to my Taig as well.
A nice example of limit switches on a Taig check out the rest of the site too, lots of cool ideas.
Just to make sure there's no confusion, that isn't my site (although I do plan to ste... borrow some of the ideas[/edit]
Last edited by Hirudin; 12-11-2008 at 10:50 PM.