my thread of questions

[JFettig]

Hi, I just bought mach2, Im having the worst of times diong just random weird stuff, I had my rapids turned up and I kept crashing
the problem that I am having right now is when I do a M6 T1 or whatever, it stops for the tool change but does not apply the offset and shoots up and runs into the motor mount.

-fixed-Also, I wanted to set up soft limits, I cant seem to get them to go, I set some dimentions and they just kinda sit there and I click the button and they dont even turn on.-fixed-



Jon

[ger21]

I believe M6 calls a macro that you can edit to suit your machine. Can't tell you how it works exactly, though.

[JFettig]

Im taking a look at industrialhobbies.com and they have a guide for something like this that Im taking a look at and working on.

Jon

[JFettig]

I used this little guide thing and got things worked out, Im liking it
http://www.industrialhobbies.com/how...maticpart3.htm

I tried to use feed per rev in turbocnc but it has you specify or recall a certain speed while its not cutting, kinda stupid, I did it in mach2 and its mad cool.

Jon

[Barker806]

the problem that I am having right now is when I do a M6 T1 or whatever, it stops for the tool change but does not apply the offset and shoots up and runs into the motor mount.
Jon

Jon,
Are you doing a G43 H "Tool #" after the tool change?

If you would like to do it in the tool change macro you can add this to your M6 End Macro

Code "G43 H" & Tool

Hope that is what you are looking for...

Brian

[JFettig]

Barker, tahts what I wasnt doing, I read up and saw that and got confused, whether I was to put the tool number in there or the length or something.
I set up scripts like industrialhobbies did so it puts the H# in for me now.
Is it possible to do
G43 H0
G0 Z-.2
Z0 being the very top of the z travel
for the end of the program to raise the head up?

thanks
Jon

[Barker806]

for the end of the program to raise the head up?

The best thing to do at the end if you have a home switch is a G53 Z0.0 and that should take you back to your home switch.

if you do not have a home switch it is very hard to set a retract...

Hope that helps
Brian

[JFettig]

Yes I have home switches. Im use to running turbocnc, a G53 with a tool does nothing to the Z height, Im assuming that it does here? I usually use fixtures G54 and G55. Wouldnt I need to go to T0 (which its zero is at Z0 top of machine)?

Jon

[Barker806]

Yes your tool length Comp has nothing to do with the G53 Move. G53 (non modal) is machine Coordinates and has nothing to do with fixture offsets as well. I have G53Z-.100 in my M6start and M6end so every time I tell the tool to change the spindle will go up as far as it can.
Is this what you are looking to do? I have a few tool change macros in the yahoo group files sections if you would like to look at some others.

Brian

[JFettig]

That is similar to what I want to do, my tool change macro that I got from industrialhobbies is very similar, goes up to safe z or toolchange position. Its just the end of the program that I am worried about right now, Ill try the G53 Z-.2 in my when Im getting ready to run some parts

Thanks,
Jon

[JFettig]

quick question:
Do I need to cancel canned cycles? I have never done it with turbocnc and dont recall doing it on any of the other cncs that I have run, let me know, Im using a G83 btw.

I mite as well pop it in there for the time being, its just one of those things I would rather just not type out every time if its not needed.
Thanks
Jon

[JFettig]

G53 didnt work it stuck my drill right back down to zero on the part when it finished. I dont have my z set for the fixture, I use machine zero to set my tools on because I chanage fixtures often

Jon