I'm trying to determine how pc-dmis calculates profile of a cone using form and location. I though I seen somewhere on this board that someone posted how all the calculations for pc-dmis are made but cannot find it.

Here is why I'm confused:

Measured cone has 8 hits at 4 levels for a total of 32 (cone is only about 1/4" long).

I report on the profile (form and location) and get a devistion of .0038", but when I do a xyza report I get:

meas nominal

X = 0.0026 0.0000

Y = 0.0023 0.0000

Z = -.4068 -0.4031

A = 60.1807 60.0000

also, roundness of cone checks .0026 (does'nt it take this into account?)

It just seems like my profile deviation should be higher than it is.

I have a model, but I justed entered required information manually, X, Y, Z, A, diameter 1 and diameter 2.

Thanks,

Dan

ver 3.6

measured in inches

Here is why I'm confused:

Measured cone has 8 hits at 4 levels for a total of 32 (cone is only about 1/4" long).

I report on the profile (form and location) and get a devistion of .0038", but when I do a xyza report I get:

meas nominal

X = 0.0026 0.0000

Y = 0.0023 0.0000

Z = -.4068 -0.4031

A = 60.1807 60.0000

also, roundness of cone checks .0026 (does'nt it take this into account?)

It just seems like my profile deviation should be higher than it is.

I have a model, but I justed entered required information manually, X, Y, Z, A, diameter 1 and diameter 2.

Thanks,

Dan

ver 3.6

measured in inches

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