Ok everyone. Hope I can get some help with this one. I tried searching. But no luck. I am trying to setup the probe. below is a picture of it. So Couple ? I’m using Openbuild blackbox. My designs and cam work is all done on fusion 360, and I machine everything on workbee. So if someone maybe write up a macro or program that I can just upload it. Would be awesome 1015 One - it won’t let me select WCS on the ball portion of the trueing ball. It will only let me select the base part of it and the center smaller part of support of the trueing ball. Why is that. This is a file that I downloaded from Mc Master and bought the trueing ball from them. Also when I get it somewhat setup and ready to post process it. It won’t let me post process the probe part of it. Below in picture will show what it says. So any help is much appreciated!!
I suggested @Robert White ask here to get some advice from the Openbuilds experts (@David the swarfer?). He wants to use this probe to align his wcs with a jig for holding multiple workpieces. Alex.
I think fusion wants you to select the center of the base of the ball as the WCS. since you can measure with your handy micrometer (actually it shoudl have come with a dimension certificate that gives you therse dims) the diameter of the ball and the distance from the base to the top of the ball, the cente rof the ball is just that 'distance - ball radius'. Having probed the ball you can then offset from the probed center to the WCS in the base. I have not tried using the Fusion probing stuff so if you can give me a walkthrough of how you set it up then I can give it a go later. The post may require changes to support it, I don't know yet.
I’m doing exactly what you are saying. Just when I go post process it. It comes up with what saying I can’t do it or whatever. Picture is shown that I posted.
not unexpected, the post has no code in it for probing, you are the first to try it (-: I will have to write code to handle probing routines since fusion only supplies probing for Haas/Heidenhein/Kern/siemens controllers. And those actually use macros so the example posts are not even doing the work, just calling a controller macro for 2 popular brands of probe.
I did try the probe wizard on open control to make sure the probe works. It does. The problem is. It only does on side of the part you are probing. I need to probe both side of the trueing ball to find the center. -x, +x/
Use the Center Finding Macro: Getting started with Javascript Macros in CONTROL / Library of Macros created by the community (Use Ball diameter as Endmill Diameter)
Center finding is the same concept. Start with X, Find one edge, note position, find next edge note position. Move to halfway between the two and set zero. Repeat for Y. We do that as part of our Auto probe to center in the hole inside the plate, and even calculate endmill offsets. Not the exact use case, but sufficient source code you can extract for your own macro. Macros are infinitely modifiable so you can tweak to any specifics you need
please confirm which Blackbox you have, the old 4X or the new X32? thing is, the 4X will make probing from fusion360 impossible, but the X32 has internal variables and support for macros which should make probing without GUI support possible. Now, if only I had a probe.....
David, I got one from CraftyCNC off of EBay. I have not been able to get it working with Control other than as a simple probe. I have a BB 4X. I could loan the probe to you. Stan
that is a 4x for that probing will have to be built into the CONTROL software, only a limited amount of probing can be done via Gcode. can do: finding a corner, or Z height cannot do: finding center of hole or boss, because that involves finding oen side then the other side then doing math to find the center, something the 4X cannot do in Gcode.
That's the old 4X Look at the difference: While it can't integrate with Fusion, you can prep it manually from CONTROL with Macros:
But is this something you can write up a macro program. And I can upload it into Openbuild app software to run. (Openbuild control)
I have made some progress adding probing to the post processor for the 4X Blackbox. It will only be able to probe X and Y faces since we have no way in Gcode to do Gcode math on that controller. Yes, probing Z is possible but that only tells use where the end of the probe is, not the tool end point UNLESS we also have a tool length probe and a supporting system to use tool offsets with G43.1. This gets complicated rapidly and 99% of home users will not be keen. Much easier to probe X and Y then mount the tool and find Z0 with that using either the paper method or an XYZ Probe With the Blackbox X32 with the expression plugin activated we can do the math (in the Gcode) which is needed for probing a boss or hole. stuff like: probe left side and remember the X coordinate proibe right side and remember X coordinate set X0 to be (xleft + Xright) / 2 (which is the center point of the 2 coordinates) This would need no support from the GUI at all and could even be made into macro files stored on the SD card and called via G65 subroutine calls. The advantage of macro files is they can do error checking logic. The disadvantage is that the correct files must exist else you cannot probe at all. This is a significant step forward in the GRBL world! (but it does have things the user needs to aware of and DO for it work correctly)
No. I understand with Z. I don’t need that. Just the center of that ball with XY. my Z WCS is aff the face of the parts that I’m machining. So I’m good just measuring with the tool to get Z0
Just it’s better and faster I think trying with a probe. Instead of using a indicator and sweeping the ball.
with the BlackBox you have, the 4X model, you will only be able to probe X and Y via Fusion360, not a ball/hole/boss. but if you probe the edge of the ball you can offset to the center of the ball, since you do know the diameter of the ball. do you have an automatic tool changer? Fusion can do all sorts of probing of edges, so if you fasten a block to the correct place, then machine it so probing it finds the correct X Y for the fixture, that may be better than a ball. I will be building a probe this weekend so I can test this stuff for you, aliexpress reckons they can deliver the day before christmas , yeah, can't wait that long, and no devices in-country that I can afford (really good probes are shockingly expensive).
that is not what I said..... it can be used with the Blackbox 4X but only for probe X - from ONE side probe Y - from ONE side probe Z - really only to set up the probe height, each tool will need to be probed for Z as it is loaded, perfectly normal for BB usage. so you can probe the side of (anything, including your setting ball, though I would replace it with a block) what you cannot do is probe both sides of something and have the center point calculated for you To do this you need an X32 or a macro that lets CONTROL do it. I do not write CONTROL macros.
I wrote a macro that was based on Peter's example some time ago, but it needs tidying up before I release it to the wild (in progress).
