Dimensioning Angle

If you load a measurement routine from 3.7 or earlier, PC-DMIS displays a message to inform you that the way Angle dimensions were calculated has changed and that all Angle dimensions in the measurement routine were updated.

The Insert | Dimension | Angle menu option calculates the angle between a selected feature and either a second selected feature or a coordinate axis.

The measured value is an angle (blue). The Angle tolerance band is another angle (black).

For a 2D angle type, PC-DMIS projects the vectors onto the current workplane. It calculates the angle from the first feature to the second feature or axis.

PC-DMIS gives a positive angle if it calculates the angle in a counter clock-wise direction. It gives a negative angle if it calculates the angle in a clock-wise direction.

The To and From options determine the direction of the calculation and the resulting sign (positive or negative):

By default, PC-DMIS uses the angle from feature 1 to feature 2 (or the selected axis). If you want the supplemental angle (180 degrees - angle), mark the Supplemental Angle box.

Example A - From line feature (Line 1) to the Y axis (To option)

Example B - To line feature (Line 1) from the Y axis (From option)

Example C - From line feature (Line 1) to the Y axis (To option with Supplemental Angle)

Example D - To line feature (Line 1) from the Y axis (From option with Supplemental Angle)

If you select one of these features (or feature types), PC-DMIS rotates the surface normal vector 90 degrees clockwise to represent a vector along the surface:

Example E - From plane feature with normal vector (Plane 1) to line feature (Line 1) (To option)

Example F - To plane feature with normal vector (Plane 1) from line feature (Line 1) (From option)

Example G - From plane feature with normal vector (Plane 1) to line feature (Line 1) (To option with Supplemental Angle)

Example H - To plane feature with normal vector (Plane 1) from line feature (Line 1) (From option with Supplemental Angle)