Process planning device

The purpose of the present invention is to provide a device whereby it is possible to flexibly allocate work processes in accordance with working conditions, and in accordance with the progress of work, in a robot-cell-based production system in which workers and robots work in cooperation with each other. In order to accomplish this purpose, the process planning device according to the present invention comprises: a work process monitoring unit which acquires progress status of each of a plurality of work processes; a device state monitoring unit which detects a state change (if any) associated with the progress of each work process on the basis of the acquired progress status of the work process; a device connection configuration planning unit which selects a resource that has become available as a result of a state change, and determines a connection configuration; a work process planning unit which calculates one or more work processes that are to be newly allocated to resources; a robot job generation unit which generates robot jobs for operating one or more robots in each robot cell in accordance with each work process; a manual work instruction generation unit which generates manual work instructions for specifying the work to be performed by each worker in accordance with each work process; and a work process switching unit which checks the progress of each process and switches between robot jobs and manual work instructions, generated as a result of replanning each process.