Calibration of 4mm disk probe

Hi,

I have a 4mm disk probe and am having trouble with calibration—I just can't get it properly calibrated. First, I calibrated the sphere probe and then started calibrating the disk probe.

I selected DCC mode and selected NO where it asks if the calibration tool moved.

Connects are SP25M,TM25 , TP20_MODULE, EXTEN40mm,

TIP angle is A0B0

In the calibration mode I used Start angles from -10 to -1 and End angles from 10 to 1, with a frequency of 0.5°. It's set to 15 hits and 3 levels. None of the angels were OK. The calibration result fluctuates around Ø3.925±0.003 with a StdDev from 0.006 to 0.009.

The disk is asembled properly I am using same disk as in this video: www.youtube.com/watch

Is there anything else what I can do. I have 8mm disk and calibration on it is succsessful with angles -5 and 5, 15 hits, 3 levels.

Parents

0 Beck's 4 months ago

You can use this calculation to figure out ur start-end angle.

example:

18mm disc dia x 2mm thick
Calibrate using only 70% of the disk thickness (out of square comp.)

2mm x 0.70 = 1.4mm

half of 70% thickness
1.4mm / 2 = 0.7mm
Half probe dia.
18mm/2=9mm
Calculate the angle from horizontal center line to half disk thickness

SineA= 0.7/9
A=4.4º

Start angle -4.4º
End angle 4.4º
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0 Beck's 4 months ago

You can use this calculation to figure out ur start-end angle.

example:

18mm disc dia x 2mm thick
Calibrate using only 70% of the disk thickness (out of square comp.)

2mm x 0.70 = 1.4mm

half of 70% thickness
1.4mm / 2 = 0.7mm
Half probe dia.
18mm/2=9mm
Calculate the angle from horizontal center line to half disk thickness

SineA= 0.7/9
A=4.4º

Start angle -4.4º
End angle 4.4º
Cancel
Vote Up 0 Vote Down

Sign in to reply

Verify Answer

Cancel

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