Production system and production method

A production system operating a plurality of manufacturing machines, based on a plan of an amount of workpieces to be produced during a predetermined period, the production system comprising:

• a first manufacturing machine being one of the plurality of manufacturing machines and carrying out a first process on the workpieces, a productivity of the first manufacturing machine being a number of workpieces per unit time that the first manufacturing machine performs the first process on;
• a second manufacturing machine being one of the plurality of manufacturing machines and carrying out a second process on the workpieces, a productivity of the second manufacturing machine being a number of workpieces per unit time that the second manufacturing machine performs the second process on, the second manufacturing machine being configured to carry out, as a substitute, at least a part of the first process on the workpieces;
• a planner, implemented by one or more processors, planning an original first productivity of the first manufacturing machine and an original second productivity of the second manufacturing machine, based on the plan of the workpieces to produce during the predetermined period;
• a detector acquiring an operation state from the first manufacturing machine, and detecting a sign of a breakdown in the first manufacturing machine based on the operation state;
• a predictor, implemented by one or more processors, predicting a stop time when operation of the first manufacturing machine is predicted to stop due to the breakdown, in response to that the detector detects the sign of the breakdown;
• a decider, implemented by one or more processors, deciding a maintenance time when the first manufacturing machine stopping operating due to the breakdown can be returned into an operating state;
• and
• a production controller controlling a productivity of each of the first manufacturing machine and the second manufacturing machine in such a way as to produce the amount of the workpieces during the predetermined period, wherein
• before the sign of the breakdown in the first manufacturing machine is detected, the production controller
• controls the first manufacturing machine to have the original first productivity, and
• controls the second manufacturing machine to have the original second productivity, and
• after the sign of the breakdown in the first manufacturing machine is detected and before the first manufacturing machine breaks down, the production controller
• controls the first manufacturing machine to have an updated first productivity that is greater than the original first productivity by changing an amount of work per unit workpiece involved in the first process performed by the first manufacturing machine, and
• controls the second manufacturing machine to have an updated second productivity that is greater than the original second productivity.