Help with Y Axis on Rotary

Onefinity Rotary 4th Axis 'The Revolution"
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Just got my rotary and am very pleased with it so far - only doing my second model now

I ruined the first one by the Y axis not working properly and seems to wonder.

I did the rounding with a 6mm end mill after setting the X,Y and Z positions with the probe and then did a roughing tool path with good results

I then changed to a tapered ball point cutter and reset Z but the Y axis had moved about 70mm away and the tool path started machining behind the work piece.

Stopped and reset all axis with same result

Started another model and found that the Y axis worked at -0.341 mm instead of 0 - did rounding and roughing OK

Started finishing tool path and reset Z and now the Y axis is working at 3.84mm - is cutting OK

Shouldn’t the Y axis be always on 0.00 mm?

Any ideas on why this is happening?

Thanks

Kerry

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Y Should be identical and no need to reset X or y after a tool change.

Buildbotics or Elite machine? I’m thinking have you lost position for some reason, aggressive cutting, dust jam…

I’m not sure how you are measuring y. If via work piece, has it shifted?

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Hi Andy sorry Buildbotics machine and reading the Y position off the control screen

Wood hasn’t shifted.

I did say it was cutting OK on finishing toolpath but did find it not cutting on some sides due to the change in Y

The controller just doesn’t seem to hold Y

Am using latest firmware 1.64

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I have to push the reset x/y button every time I do a rotary carve to make sure it’s back at zero because it will often just not don’t on its own. It’s the best way so far that I’ve found to make sure it’s on the right spot.

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Hi Cameron thanks for your feedback and not sure what you mean by push the reset x/y button.

I finally got that way that it the bit wouldn’t move at all when probing in rotary xyz so reloaded the full operating system this morning.

Upon first run - after rebooting the system for first time - it worked perfectly and rounded a piece of wood and then did the roughing toolpath - 6mm bit - then changed to a 6mm tapered ballnose and reprobed Z - found that the Y axis had changed.

Can I move it back to the right setting ie centre of work without reprobing xyz?

And if using a tapered bit wouldn’t this show a small difference in x and y due to the taper?

Must say not impressed with onefinity as they have had over 12 months to get all of this right and still haven’t.

Thanks Kerry

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So I found that the y-axis isn’t changing, it’s just not going to where your y-axis is set… at least in my case that’s what’s going on. So before I start the carve I will hit the return to XY home button in the controller to make sure it’s at the proper home location for when the carve starts. I typically will set my x and y before I turn the rotary on because I find the machine moves a lot better in the x and y before it’s engaged. I’ve had issues with one side of the y-axis hanging once the rotor is turned on, but that doesn’t happen very often. It’s a bit of a buggy mess right now, but it does work well when it works. So hopefully once I get the software fixed we’ll be in good shape.

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Hi Cameron thanks for your reply and did what I should have done yesterday.

I rebooted andd homed the machine with no problems and moved to a safe position clear of the chuck marked the work piece and pressed the 100mm X button - the bit moved 160mm instead of 100mm.

So something in this new upgrade to 1.6.4 is totally out.

Up to Onefinity to fix it now I think

Kerry

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