Cylindricity Question

[Mike Johnston]

I am running 3.7 MR2 and am wondering what would be the best way to find the cylindricity of a feature since it is not available in this version. Is there another tool that you use to calculate cylindricity? Thanks in advance. The feature I need to check is approximately 2 inches long. Would concentricity work? The problem is the reference length with concentricity. Thanks

Mike

[Matthew D. Hoedeman]

Roundness should give you what you are looking for.

[JIM HARRIS]

Cylindricity is not only roundness but also straightness.

[Jan d.]

I was always told that if you asked for roundness, PC-DMIS reports circularity when it is a circle and cylindricity when it is a cylinder. So look at RN for the cylinder, and you ought to be all set.



Jan.

[rangerboat72]

I was always told that if you asked for roundness, PC-DMIS reports circularity when it is a circle and cylindricity when it is a cylinder. So look at RN for the cylinder, and you ought to be all set.



Jan.

I am pretty certain that statement is true. I haven't actually cerfied that statement, but I was told the same thing in class about 3 years ago...

[Farmer]

I am pretty certain that statement is true. I haven't actually cerfied that statement, but I was told the same thing in class about 3 years ago...

Yup, I was told the same thing in class...

[John Kingston]

You guys are correct. Direct from the help file:

The Dimension | Roundness menu option determines the roundness of a circle, cylindricity of a cylinder, sphericity of a sphere and the conicity of a cone. This dimension type is considered one sided, meaning a single positive value tolerance is applied.

[Paul Barriage]

I looked up cylindricity with a now cranially numb engineer, ......

Wanna here it? Here it goes....

Cylindricity includes concentricity, straightness and surface imperfection.

The tool to use that came to mind was an indicator.