Evaluation of K Diagram in GearPro Ver7.2

[[WM...]]

In GearPro Ver. 7.2, even if we narrow the chart’s start/end points and the evaluation’s start/end points to be smaller than the range of the K diagram—as shown in the figure (default)—there is no difference in the resulting error values. For profile error, profile slope error, and similar items, the numerical results change according to the set range. In previous versions, the error values in the K diagram also changed according to the evaluation range. How can we obtain the same behavior as before?
Also, the numerical results are output even when the “Tolerance Evaluation” checkbox is turned off.

[[Ro...]]

Hi.

The change of the main evaluation ranges will not effect the K-chart or the K-value.
The change will effect all standardized characteristics like Fa, ffa, fHa, ...

If you want to create the behaviour you describe, you have to shorten the K-diagram like in the attached screenshot (marked red).

I checked also the behavior to deactivate the "tolerance evaluation" of the K-value but the K-values still appear.
This seems to be a bug.
I assigned this issue directly to our development team. 
For such cases it would be really helpful to get your measurement file .act directly through your local support team in our organization.
If this happens we can document the bug and from which version on it is corrected.
May I kindly ask you to provide your measurement file .act to our support team.
Inform them to link the .act to issue no. 819665.
Thank you.

[[Me...]]

Hallo WM_NC team,

Thank you for providing the test data.

A change in behaviour of GEAR PRO has been implemented.

• GEAR_PRO_2024_7.2.0402_2026.02.12
  • Enabling/disabling the ‘K-chart overun’ feature => Enabling/disabling the entire K-chart view
  • When K-chart / K-chart-overun feature is enabled => enabling/disabling the tolerance evaluation of ‘K-chart-overrung’ has no effect – value is always displayed in red
  •  
• GEAR_PRO_2025_7.4.0022_2026.02.12
  • Activating/deactivating the ‘K-chart overrun’ feature => the defined K-charts are always displayed – exceedances of the tolerance band are shown in red, but have no ‘quality effect’ such as OK/nOK
  • When K-chart / K-chart-overun feature is enabled => enabling/disabling the tolerance evaluation of ‘K-chart-overrung’ has no effect – value is always displayed in red

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Question: Why does the numerical value of ‘K-chart overrun’ always appear in red (tolerance exceedance)?

Answer: The existence of the value itself already indicates that the tolerance band has been exceeded. - ‘K-chart overrun’ is the amount by which the tolerance is exceeded.

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The following is also interesting for your test data.

1. Due to standard rounding rules, rounded values can appeared within tolerance, but are marked as out of tolerance.
2. For example: Value: 0.0071 / Tolerance 0.007 => displayed value 0.007 [0.007]
3. Some would like to resolve this seemingly contradictory situation. You can do it by switching the setting I showed here:

Please note: This only affects the report display – all values remain accurate for other exports.