A non-interfering selective disassembly sequence for components with geometric constraints

This paper analyzes the problem of global disassembly of a selected component from a geometrically constrained assembly. The geometric constraints are: (i) spatial constraints due to the three-dimensional geometric interactions between the components in an assembly; and (ii) user-defined constraints, such as grouping of components as subassemblies and directional constraints on component geometry. A new algorithm has been proposed to determine a non-interfering disassembly sequence for a selected component, minimizing the number of simultaneous component removals. The algorithm analyzes both the spatial constraints of the assembly geometry and the user-defined constraints in evaluating the accessibility of components, which is followed by determining the topological disassembly ordering of the components to evaluate an optimal sequence. Preliminary implementation results of the algorithm for a geometrically constrained assembly are presented.