Abstract
One of the steps in designing a modular jig or fixture assembly is that of selecting the appropriate components. Among these components, those forming the jig’s body must be chosen for closing the dimensional chains between the other locating, clamping, or indexing components. The methodology starts by defining the components’ virtual connectors, specifying the rules for establishing their coordinates systems, and then is defining the rules to be followed for aligning and assembling two adjacent components. Different cases are described and only some of them are detailed, for clarity reasons. The algorithm is looking to determine a series of components from which the first is in a fixed position, related to other locating or clamping jig’s component. A hierarchical tree is generated, using available components, having in each node a component which is assembled with a previous one using the above-mentioned connectors. Interference criteria is checked for selecting possible solutions only. A stop criterion related to the number of components in a branch is used, Solutions from the different branches are compared using the distances to an end component.
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