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Messages - AROCKY

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1
General Mach Discussion / Help with duel boards
« on: December 09, 2015, 10:25:22 PM »
Hello

I have a dilema where I run functions such as auto zero, spindle speed, mist/flood, water cooling, etc. Currently I operate all these manually as there is no free pins on my breakout board! I have a cheap breakout board lying around and am thinking of installing another parallel port in my comp and run this board as additional so I can utilize the pins for these functions.

My question - Is this possible?

I have noted that in the ports and pins config in Mach3 it allows for a second port to be selected, is this intended for this purpose? or is there a completely different path I should be looking at to utilise the second port function when adding pins?


Can anyone pass on some info?


Thanks Guys

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General Mach Discussion / Re: Another Auto Home/Zero button question
« on: December 01, 2015, 08:27:29 AM »
There's a thread on CNC Zone by Big Tex. It's a sticky in the Mach3 section. There's an early version of my code in there somewhere, which is based on the code that Big Tex posted.
You'd need to make a lot of changes, as the code references a lot of user DRO #'s.

Thx Ger found it.

I think I understand most of it, so I need to run two buttons, one for the initial setup using the "initial tool change" file and a second for use after changing tools utilizing the "M6start" file?

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General Mach Discussion / Re: Another Auto Home/Zero button question
« on: December 01, 2015, 07:25:40 AM »
My 2010 Screenset uses a fixed plate for tool changes, and a movable plate for setting zero to the part.

You set your zero with the movable plate, and after tool changes, the new tool length is set automatically using the fixed plate.

https://youtu.be/pJNUcsJ6BC8

Thx ger, this sound exactly like what im after, will check it out

That is exactly what I'm after Ger, is that code available anywhere? I have built my own screenset so just want the code for the button.

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General Mach Discussion / Re: Another Auto Home/Zero button question
« on: December 01, 2015, 07:17:59 AM »
My 2010 Screenset uses a fixed plate for tool changes, and a movable plate for setting zero to the part.

You set your zero with the movable plate, and after tool changes, the new tool length is set automatically using the fixed plate.

https://youtu.be/pJNUcsJ6BC8

Thx ger, this sound exactly like what im after, will check it out

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General Mach Discussion / Another Auto Home/Zero button question
« on: December 01, 2015, 07:08:11 AM »
Hi all

I have a question about the auto zero button.

If I set my home zero to my base plate of my machine, then set my Z zero to the top of my workpiece, this will give an offset from home to zero (lets say 20mm work piece thickness)?

What I want to do is set an auto tool zero that works off my base plate, I want to build my touch plate into my baseplate, then when I hit the auto tool zero button it will return to the home position +40mm safety for tool length, then proceed to zero the tool but instead of setting the Z Zero it will set the Home Z and the offset for my Z Zero should remain so even if the tool length is different the Z Zero should now reflect. This will allow me to hit my zero the machine will move to home then zero, this saves me having to always place my touch plate to zero after every tool change.

If anyone understands what I am trying to do can you advise if this is possible and point me in the right direction to some code?



Thank you for the great knowledge bank

6
General Mach Discussion / Re: Steps Per seem wrong, Halp Plz
« on: October 07, 2015, 02:54:58 AM »
Quote
I am curious as to why if I change the settings on the microstep drivers it makes no difference to the amount of movement?

I think you have a problem there somewhere - changing the driver's microstep settings should make a difference to the distance the machine axis travels but you may be seeing some compatibility issues with that breakout board.

Tweakie.

So I chanced the micro-stepper settings last night and it didn't seem to make a difference, however on reboot today I had to re tune the motors by doubling the steps, I suspect this was because of the Drivers.

Is it possible they have a memory and need to be powered of for awhile before the settings will take effect? Sounds unlikely but im very new t this stuff.

I played with the settings again and it had no effect so I have powered down and will reboot after a bit to see if it changes anything.

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General Mach Discussion / Re: Steps Per seem wrong, Halp Plz
« on: October 06, 2015, 10:51:14 AM »
Thanks Tweakie

Not really a problem, just that the breakout board needs to be set with the steps as well to get the led display to show coords, it can only be set in multiples of ten so I cant get it to match the coords of Mach three. Its not really a problem.

Main think I was interested in is weather I had done something wrong as all i've read people have way higher steps than me running similar setups.

I am curious as to why if I change the settings on the microstep drivers it makes no difference to the amount of movement?

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General Mach Discussion / Steps Per seem wrong, Halp Plz
« on: October 06, 2015, 05:32:53 AM »
Hello, Im new to CNC but built one as a project, it have it up and running and it works great.

My only real problem is the motor tuning, im using 200 pulse 1.8 nema 23 motors, Gt3 belts and 20 tooth pulleys on X and Y and 2m pitch 8mm leadscrew on Z direct drive, I have my micro steppers set to 1600. My problem is that I need to set the steps per in motor tuning to as low as 13.5 to get it to move the correct distance on X and Y and set to 100 on Z, I have tried using the manual calcs, using the xcell doc, these did not work, I then just taped some steel rules to the X and Y axis and slowly tuned them to move right, I got them spot on and was cutting things perfect to scale with the readouts matching movement. These settings however seem extremely low compared to every thing I have read. So I then discovered the inbuilt cal tool in Mach3, so I ran this and it gave me the exact same as what I had 13.5 for X/Z and 100 for Z.

No matter what I do these are the only settings that work.
In addition, it does not matter what microsteps I set on the micro steppers it does not change anything.

Can anybody help me please, im lost as to what the problem could be, maybe the microsteppers are no good?

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