I have manufactured two parts that are going to be assembled. The top part with four holes is going to be assembled to the bottom part consisting of four pins and an elevated L-shape (See Figure), such that when the top part is placed on top of the bottom part they form a smooth plane. To qualify for a correct assembly the holes need to fit with the pins and the left and bottom edge can not intersect the black L-shaped area.
I want to use a pattern of four holes as datum and verify that the points along the edges are not violating this criteria. (Points = red circles in drawing)
I've measured the size and location of the circles and the points along the edges. How do I define the four holes as a datum and find the location of the edges from there?
A similar part can be found at this website: http://www.etinews.com/blog/2009/10/01/question-about-specifying-a-position-tolerance-on-a-hole-pattern/ (See Figure)
