Mazak Matrix Tool Eye Calibration (2025)

Has anyone had to calibrate the tool eye on your Matrix lathe? Have a two spindle machine that needs adjustment and looking for any help before I dive into this.

Thanks

Hi Terry, We have a QTN250MSY with the Matrix control. I actually had to replace the tooleye sensor, then calibrate the new one. First off, are you needing to calibrate because of a crash? If so, do all four buttons of the tooleye work properly (other than being out of calibration) with good repeatability? If not, then you'll need to replace it first, otherwise there are a few steps you'll need to take. Starting with X axis: Teach a turning tool in X (inside sensor button). Then turn a piece of barstock to a nice even number (1.000, 1.250, etc.). Measure the diameter to determine how far off it is. Then look up parameter BA97 (X axis sensor position) and write it down. You'll need to adjust this number +/- to bring it in. Keep in mind that the X axis value is diametrical and Z is not. It is not nescesary to power down for this parameter change to be active so once you change it then re-teach your tool and cut it again and remeasure. Repat the process until you have it right. I usually have it in 3-4 tries. Once you are able to teach a tool and have it accurate within a couple tenths, the you'll need to teach a boring bar in X (outer sensor button). Predrill your barstock for your boring bar, the bore it to a nice round number and measure it. Look up parameter BA95 (X axis sensor width) and write it down. Note that this value is not diametrical, it is the actual with between the sensor buttons. Adjust as needed until your bar is accurate. Z axis works pretty much the same except Z is not diametrical.
The parameters are as follows:
BA95 is X Axis Width (Linear)
BA96 is Z Axis Width (Linear)
BA97 is X Axis Position (Diametrical)
BA99 is Z Axis Position (Linear)

I hope this helps.

Brian

Brian,

Thanks for the help. Exactly what I needed.One was a crash another the tool eye arm motor failed. So removal and replacement she is off a bit.

Thanks to both of you, I was just going to post a new thread on this, but for a Nexus control, are the parameter numbers the same?

Thanks, Robert

Nexus is actually the newer generation of Mazaks. The control will either be Fusion or Matrix. The parameters I listed are for Matrix. The parameters for the Fusion control (and T32 control) are:

B61 is X Axis Width (Linear)
B62 is Z Axis Width (Linear)
B63 is X Axis Position (Diametrical)
B64 is Z Axis Position (Linear)

The entire process is otherwise the same.

Brian

What are you guys using for a Z axis ref plane? Dialing in a new tol eye and it seems kind of like a personal or machine specific preference.

2" off the chuck face?

So the standard for a new machine is 4" or 100mm off the chuck face as the reference point. You can set it anywhere you like really, although if you have multiple machines it makes sense to keep them consistent. On machines with collet chucks I'll often set it to the face of the collet so that my Z offset is equal to my stock stickout to make things easy.

The Z reference point is set by parameter S23-Z for Matrix and Smooth control machines, I don't remember if it's the same on older controls.

4" is perfect, I'll run with that.

Thank you.