Probe Set-up and Calibration

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Probe setup and calibration is a very important factor in achieving accurate and reliable results.

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In this tutorial, we will create a probe head and stylus for a CNC CMM, as well as a machine tool when using on-machine verification.

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We'll also show you how to change the probe when using a manual device and ensure it is calibrated accurately to get the very best results.

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On screen we already have a model imported, and I can see that our required different probe diameter in order to inspect all the geometric features on this part.

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Based on previous inspections, I know that this geometric feature is smaller in diameter and thus needs a smaller probe.

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a smaller probe but also make sure it is calibrated accurately.

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Probe creation for CNC CMMs and machine tools in PowerInspect is done by navigating to the Machine tab, and selecting the correct probe head from the extensive list available.

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Now, I need to add the relevant probe sub-assemblies to match the physical probe hardware I currently have on my machine.

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To do this, on the Probe menu, click "New" and specify the module, any extensions, and stylus, so that my current simulator hardware matches that hardware used on the machine.

01:35

Probe calibration on CMMs and manual devices as well as machine tools can be done in a multitude of different ways.

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This can be done from within PowerInspect or can be done directly in the protocol, if doing calibration independently.

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This is usually the case when using the I++ protocol on that of CMM's.

01:56

Calibration for CMMs in PowerInspect is done using the simple probe calibration wizard.

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This process ensures all necessary probe angles are calibrated before the inspection is carried out.

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Probe calibration for machine tools can either be done on the controller or from within PowerInspect.

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It should be noted that most controller calibration cycles are performed using 2-dimensional calibration.

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However, PowerInspect's PI Calibrate add-in utilizes 3-dimensional calibration, to ensure the results are more accurate for 3-dimensional multi-axis measurements.

02:35

When it comes to manual measuring, firstly, make sure that the correct protocol is selected, then navigate to the Tools tab and select the correct probe or laser scanner required. I can then go ahead and change this physically on the device as well.

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Please refer to either the Help menu located inside PowerInspect, the Autodesk Knowledge Network, or other tutorials for further guidance.