K-chart comparison

[[WM...]]

Everyone, please help me.
I am comparing the results of exporting the same ACT file using GearPro versions 5.6 and 6.2.
After combining the two results, I noticed that the K‑chart lines differ in the areas where crowning is present.
Could you explain why such differences occur?

Also, if there is a way to output the K‑chart line as text data—similar to the XSLT output for tooth profile and lead—please let me know.

ver6.2.pdf ver5.6.pdf

[[Ro...]]

Where is the difference?

[[Ch...]]

I also took a peek at these and did not see much if any noticeable difference in the results.

[[WM...]]

Thank you everyone for reviewing this.

The lack of explanation was on my part. I apologize.
I am attaching additional materials.
The attached images were created by printing with the GearProPDF printer, taking snapshots of the output at the same scale, making one of them semi-transparent, and overlaying them using the raster lines or the measured lines as the reference.
As I pointed out at the beginning, the upper and lower pass/fail limits of the blue K‑chart differ slightly depending on the software version.
I would like to know the cause of this.

[[Ro...]]

Hi, the two software versions are very very very old 5.6 version (year 2016) and very very old 6.2 version (2019).
I guess we can´t find an answer for that question as they are both far out of any support or bugfixing.
Also possible that you´ll have slightly changes in the latest version 7.4 (2025) as well.
PDF-Printer in general can be an issue and also the PDF-Printer versions from the past.
If you want to compare you have to take snapshots from the evaluation report window with the same magnification but not snaps from the PDF.
But again, even if you´ll find that slightly difference also in the evaluation report window we can´t answer this question.

[[WM...]]

I see. Alright, I understand. It’s unfortunate, but I guess there’s nothing we can do.

Thanks.

[[Ro...]]

For final summarization, and also discussed with the local support contacts from ZEISS in your country. The answer is now more clearer. The difference in the curvature occurs because the scaling unit in version 5.6 was choiceable in either "DIAMETER" or "ROLL DISCTANCE". In your example 5.6 you used "DIAMETER". Beginning with GEAR PRO 6.2 we deleted the possibility of "DIAMETER" scalling for involute profiles as this is not useful. The only useful scaling unit for involute profiles is "ROLL DISTANCE". I hope this makes it more clearer?

[[WM...]]

I truly appreciate receiving that information. Thank you very much.