Abstract
This paper deals with the static characterisation of a parallel manipulator for routing processes. Since accuracy and surface finishing are critical in all machining processes, the performance of a parallel machine is analysed in this paper in terms of these parameters. Using a previously developed static analysis methodology, the stiffness of the machine structure is obtained and used as an input for a process model. This approach allows the static behaviour of the machine to be evaluated in terms of the surface location error for a given routing operation in the manipulator workspace. The study focusses on certain discrete points in the operational workspace for each direction of the tool feed. Then, the global behaviour of the machine is presented using surface location maps. Furthermore, some static constraints are imposed to obtain the static workspace of the manipulator for the routing process.
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