Production planning system

A production planning system for making a production plan of products by calculating a material necessary amount for at least one product on the basis of production request information containing a necessary number of the products and a date, parts list information of the products and information about inventory and inventory schedule of each parts, comprising at least an input unit;

• an output unit;
• a storage unit;
• and a calculation processing unit;
• wherein the input unit accepts production request information of at least one product, parts list information and information of inventory and inventory schedule of each parts;
• and
• when a production plan of the product is made by calculating a material necessary amount on the basis of the information inputted from the input unit, the calculation processing unit calculates a short number of the products from a producible number obtained from the necessary number in the production request information and a producible number obtained as the result of calculation of the material necessary amount for those products which have a smaller producible number than the necessary number in the production request information as a result of the material necessary amount calculation, calculates necessary parts number necessary for producing the short number of products by looking up the parts list information, calculates a short parts number on the basis of information representing a link result of the material necessary amount calculation and outputs the information about the short parts of the products to the output unit.

A production planning system comprising:

• a production plan generation unit for calculating a material necessary amount on the basis of production request information containing a necessary number of product and a date, parts list information of the product and information about inventory and inventory schedule of each parts;
• an addable number generation unit for calculating date-wise a virtual producible maximum number of sets for each product when surplus inventory not linked with a production request as a result of the calculation of the material necessary amount and products and parts expected to form surplus inventory are appropriated;
• and
• a screen display unit for displaying for each product a production necessary number, an accumulation value of the production necessary number, a production execution number, an accumulation value of the production execution number and an addable number.