Production control system of autonomous and decentralized type

A work driven production control system, comprising:

• a plurality of pallets for carrying works;
• a plurality of production equipment;
• transport means for delivering a pallet to a given equipment;
• an automatic warehouse for housing a given work to be delivered to a determined one of said pallets;
• part supply means for delivering the given work from said automatic warehouse to the determined one of said pallets;
• and
• job progress control means including job request right effectuation means for deciding to grant the job request right to a pallet carrying a work of top priority;
• wherein each of said pallets includes equipment selection means, design information storage means for storing the design information of the work placed on the pallet, work information storage means for storing the job history and the present condition of said work, work priority determination means for calculating the order of priority of said work, and communication means for communicating with said production equipment, and
• wherein said work priority determination means recalculates a priority by using at least a predicted maximum job time and a delivery time stored in said design information storage means after every job is correctly executed,
• said equipment selection means includes means for receiving said job request right, determining whether or not a job is executable on the basis of said design information and said work information, and selecting equipment to perform the next job of said work on said pallet if the job is determined to be executable,
• all of said production equipment includes:
• communication means for exchanging information with said plurality of pallets and said job progress control means,
• equipment information storage means,
• job workability determining means for checking a job type from the pallet with the accuracy thereof stored in said equipment information storage means to determine the workability of a job,
• equipment control data generation means for preparing NC data from the design information if the job workability determining means determines that the job is workable, and
• job execution means for executing a job by applying the NC data obtained by said equipment control data generation means to actual equipment for executing the job and acting on said work.