ISO/ASME Standard for Filtering

[[Ri...]]

Hello all,

Unfortunately there are many ISO standards and even ISO 16610 has many parts/subsections to it. I know ASME uses B46.1 for surface texture.

Per Calypso it uses ISO 16610-21/28 for Gaussian filters, and ISO 16610-22 for Spline filters.

I'm not looking for the calculations, but more so an ISO/ASME specification on the appropriate filter wavelength or UPR to use.

The Zeiss Measurement Strategy Cookbook appears to use size of the plane to select the appropriate filter wavelength for functional checks, but for form checks it will specify to follow the surface finish requirement to select the appropriate filter wavelength. OK - this makes sense to me as one of the main points of filtering on a scanning CMM is to remove surface finish.

For cylindrical features though, you are using UPRs and not wavelength, but the cookbook appears to base the UPR purely off size, and surface finish appears to not have any role (per the cookbook) on which filter is correct. This doesn't seem correct to me. Should the same filtering be applied to a 11" Class XXX ring gage inside diameter as a 11" inside diameter with a 300µin Ra surface roughness allowance?

I'm just looking for more defined information here, and hopefully someone can point me to the exact standard(s). I'd rather not buy 100 ISO standards to find out I only needed 2. Lol.

Thanks.

[[Je...]]

There are no filter-defaults for form or dimension in ISO GPS, like ISO 1101 (at appendix C.3) explicitly tells.

Greets
Jens

[[Da...]]

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pdf that Derek posted has something -> viewtopic.php?p=12953#p12953