Parts production management system and parts production management method

A method of managing parts production in a parts production management system that sets a linking relationship between a parent lot number at an input port of a part producing production line and a child lot number at an output port of the production line, the method comprising:

• storing a line cycle number of a line cycle processing a parent lot and the parent lot number while being linked with each other by using a lot linking unit in a first table in which a line cycle number representing the line cycle for processing a group of parts and the parent lot number input for being processed in the line cycle represented by the line cycle number are stored while being linked with each other, when a parent lot is input;
• storing the line cycle number of the line cycle that has processed a child lot and the child lot number while being linked with each other by using the lot linking unit in a fifth table in which the line cycle number and the child lot number of the part processed in the line cycle represented by the line cycle number, when the child lot is output from the production line after completion of the process;
• and
• acquiring the line cycle numbers corresponding to line cycles processing the groups of parts and storing the line cycle numbers, line codes specifying the production lines in which the line cycles corresponding to the line cycle numbers are operated, and start dates of the operations of the line cycles at which the operations of the line cycles are started in a line cycle table while being linked together when the groups of the parts are input to the production lines.

A parts production management system that sets a linking relationship between a parent lot number at an input port of a part producing production line and a child lot number at an output port of the production line, the parts production management system comprising:

• a first table in which a line cycle number representing a line cycle for processing a group of parts and a parent lot number of a part input for being processed in the line cycle represented by the line cycle number are stored while being linked together;
• a second table in which the line cycle number and a child lot number of the part processed in the line cycle represented by the line cycle number are stored while being linked together;
• and
• a lot linking unit that stores the line cycle number of the line cycle for processing a parent lot and the parent lot number in the first table while being linked together when the parent lot is input to the production line and stores the line cycle number of the line cycle that has processed the child lot and the child lot number while being linked together when a process in the production line is completed and the child lot is output from the production line;
• a part location change history table in which location codes indicating input and output ports of processing lines, a loaded part number indicating a number of loaded parts, an unloaded part number indicating a number of unloaded parts, and a part number of the parts are stored while being linked with a change history number assigned as a sequential number in order or generation of a process causing change in an inventory number;
• an inventory management unit that reads out information corresponding to a latest change history number corresponding to a designated location code from the part location change history table, and displays the information along with the inventory number on a display screen;
• and
• a line cycle management unit that calculates a correction amount with respect to the inventory number of subtracting a number of unloaded parts counted by counters provided in the output port from a number of loaded parts counted by counters provided in the input port, and write the correction amount into the part location change history table.