RPS Alignment example
An RPS Alignment is used to apply constraints to features in one or more axes. When applied properly six degrees of freedom are constrained / locked in a similar fashion to a 3-2-1 alignment with the added benefit of applying offsets to each feature / constraint.
- In a first axis, three or more RPS constraints must be locked to define an (offset) plane.
- In a second axis, two RPS constraints must be locked to define an (offset) line.
- In a third axis, one RPS constraint must be locked to define the locating point.
This alignment is typical in sheet-metal applications where the Coord System is not local to the part and the primary datum is not a simple plane. i.e. Datum Targets or Net Locators are used for primary Datum, 4-way locator for Secondary Datum and 2-way locator for the Tertiary Datum.
Below is an example of an RPS Alignment in CMM-Manager. In this case only three features are used. Each of these features was measured using Relative Measure so the feature is located positionally as well as height / depth due to extra sample points being measured.
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