measuring 2d profile and straightness

Hello all

i have these profile bars (about 2.2meters long), and this is how the profile looks.
It also has a straightness callout along the entire length

I need to measure em and i know how to measure profile, i basicailly just do a bunch of vectorpoints, construct a scan set and evaluate profile.
For the straightness i guess i just measure a line across the entire lenght and evaluate straightness

But i dont really know how to align the part. Ive taken a primary plane on the end face of the bar and then measure a line and offset angle 35.
But the ends of the bar are cut raw, and they re not really good feature to use for alignment.

How would i go about to align this part to evalute the staightness n profile?

TY ALL <3

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0 markus lundkvist 4 months ago

Neil Challinor

So I used vectorpoints to measure a line of the leftside plane on the picture (where length 4.5 goes from)

I measured two lines each at both angle 35 planes in different heights.

used BF3D vector min max on all points.

Started CNC repeated, but it wouldn't find my part any good.

Did the same process but now I took some points at the end faces.

Now it finds part, but when measuring the line on left side plane it goes off center and hits one of the angled planes after around 500mm
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0 markus lundkvist 4 months ago

Neil Challinor

So I used vectorpoints to measure a line of the leftside plane on the picture (where length 4.5 goes from)

I measured two lines each at both angle 35 planes in different heights.

used BF3D vector min max on all points.

Started CNC repeated, but it wouldn't find my part any good.

Did the same process but now I took some points at the end faces.

Now it finds part, but when measuring the line on left side plane it goes off center and hits one of the angled planes after around 500mm
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