Work assistance device, work assistance method, and work assistance program

A work assistance method of assisting a setup work in a system having a plurality of lines for producing plural types of products, each of the lines requesting the setup work for producing the product after switching of the type of product, the work assistance method causing a computer to execute a process, the process comprising:

• acquiring, among production plan information including setup time of each product, production time of each product, and a production order of the products in each line, production plan information on a product for which the setup work is yet to be performed, from a memory;
• and
• formulating a problem of optimizing an execution order of the setup work as an integer programming problem based on the acquired production plan information and predetermined restrictions, and determining the execution order of the setup work for each product using an integer programming problem solver, wherein
• in the determination processing, the earliest time when the setup work for each product in each line becomes executable based on the production plan information, and when a difference between the earliest time when the setup work for a first product in a first line becomes executable and the earliest time when the setup work for a second product in a second line other than the first line becomes executable is equal or greater than a predetermined threshold value, it is determined that the setup work for the first product is executed before the setup work for the second product, and then, the execution order of the setup work for each product is determined using the integer programming problem solver.

A non-transitory computer-readable storage medium storing a program for assisting a setup work in a system having a plurality of lines for producing plural types of products, each of the lines requesting the setup work for producing the product after switching of the type of product, the program causing a computer to execute a process, the process comprising:

• acquiring, among production plan information including setup time of each product, production time of each product, and a production order of the products in each line, production plan information on a product for which the setup work is yet to be performed, from a memory;
• and
• formulating a problem of optimizing an execution order of the setup work as an integer programming problem based on the acquired production plan information and predetermined restrictions, and determining the execution order of the setup work for each product using an integer programming problem solver, wherein
• in the determining processing, the earliest time when the setup work for each product in each line becomes executable based on the production plan information, and when a difference between the earliest time when the setup work for a first product in a first line becomes executable and the earliest time when the setup work for a second product in a second line other than the first line becomes executable is equal or greater than a predetermined threshold value, it is determined that the setup work for the first product is executed before the setup work for the second product, and then, the execution order of the setup work for each product is determined using the integer programming problem solver.