Messages

1

FAQs / Re: M6 End

« on: October 02, 2017, 02:23:52 AM »

Thanks

2

FAQs / Re: M6 End

« on: October 01, 2017, 06:10:58 PM »

Yep that sounds exactly what I want. Didn't know that I could do that as it had other lines in m6end I did not understand. So I wasn't really going to touch it without clarification.

Thanks

3

FAQs / Re: M6 End

« on: October 01, 2017, 01:46:58 PM »

thanks for the answer joe,

I dont wanna go to a certain position after the tool change accept the next gode.

My tool change happens at the highest Z point and away from any material. After applying the tool offset the machine can go straight into the next line

For example:

m6 t? - tool change @ x0 y0 z0 (x600 y600 z200 in machine coordinates)
g43 h? - apply tool offset without the safe z position
g0 x200 y200 - start position for the next cut
g0 z100 - rapid move to save z
g1 ...... - carry on with the next cut

if I dont put the lines g53 z0 and g0 x0 y0 in front of my tool change the controller automatically goes to the position it came from before the tool change. With a new tool in the spindle that would chrash.

I will play around with a copy of m6-end and try the thing you suggested. I cant really see that that is the answer but I will give it a go. I might also try to put the two line above into the m6-start and see what happens.

thanks

4

FAQs / M6 End

« on: September 30, 2017, 10:37:39 PM »

Hello Everybody,

I'm not completely new to mach3 but it is the first time asking a question as I cannot find anything to my problem. I also believe that it will be an easy fix by looking at all that knowledge out there.

Anyway. All what I want to do is to make my cnc to go to the next g-code line after a tool change rather than back to the m6-start starting position. At the moment I achieve that by creating a G0 move to the tool change position before calling a M6 tool change. Pushing START will go straight into the program rather than back to the m6-starting position. The post processor of my CAD/CAM does not add that G0-move automatically so I will have to do that by hand after reading it out.

My machine is homing to X0 Y0 Z0 in the top right corner which I offset with G54 to a plus value referring to the upper limits to my machine (for example G54 X600 Y600 Z200). Doing that will set my 0,0,0 into the front left corner and onto the machine bed. My CAD/CAM is working fine with that setting and I do not have to write minuses when hand coding. There might be a better way of achieving that but so far it worked for me.

My M6-START lookes like that:

code "F7000"
code "G53 Z-0"
code "G53 X-600 Y-600"
tool = GetSelectedTool()
SetCurrentTool( tool )

which will bring my spindle to the front left corner, easy to reach for a tool change.

I have noticed that the M6-END will call the M6-START position to set the tool up for the g-code to follow. I do not want that move and want to go straight into the g-code instead.

Ok, firstly: If there is a sound reason behind that set up move, I would like to know as I cant see one. But there might be something I don't think of, so if so please let me know.
secondly: If there is no sound reason for the doing that move than I would like to change it accordingly as I do believe that it should be easier to change M6-END then changing the post processor to add a G0 move.

Thanks for any answers