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Uploaded on Jul 26, 2017
Job-order production is a type of production wherein the product is engineered after the order is entered, and procurement to production and installation are managed. This type of production is commonly used for products such as equipment and machinery, transport equipment, and electric power equipment. Make-to-order (MTO) production and engineer-to-order (ETO) production are also used for similar purposes. Job-order production may also be applied for mass-produced items, but we will not cover this here. However, our discussion of job-order production may be of reference with regard to the selection of options and customization of parts based on customer requirements. In job-order production, a rough plan is formed at the inquiry stage, an available to promise is made, and the order is received. However, this type of production requires re-engineering after the order is entered, and engineering changes, process changes, and so on frequently occur during production. Planning under such conditions is extremely difficult, and often a veteran planner does the planning single-handedly. This makes it difficult to properly take into account current loads at the inquiry stage. Moreover, the planner often lacks the resources to perform progress management of projects currently in production and to re-plan according to engineering changes. He also most devote time to projects whose due date is getting near, and as a result lateness frequently occurs, causing opportunity losses and drops in customer satisfaction. You can solve these problems by using the production scheduler, which allows you to carry out planning with high speed. The production scheduler allows you to create in a short time a plan for a large number of orders. This makes planning work remarkably smooth for planners. Moreover, because it is possible to create production plans for multiple orders at one go, you will be able to make realistic available to promises when you receive an inquiry. With regard to engineering changes, you will also be able to re-plan in a short time. Further, through systematization of the know-how of veteran planners, in-house sharing without dependence on the skills of particular individuals is possible. I will now talk about models for various production items that will be discussed. In the case of job-order production, the production planning method differs according to the product features, the number of parts, and so on. The first production item is large-size gears, turbine shafts, and the like. The production scheduler can be used for jobs of any size, from small to large. For a case of machining plan, please refer to the metal machining video. The second production item is machining and assembly items for general machinery, precision machinery, and the like. Planning in day units is customary for assembly planning, and this is done using order control, MRP, and so on. However, an increasing number of people use the production scheduler to improve the accuracy of available to promises and manpower planning. Lastly, there are products with a complex structure and lead times ranging between a few months to more than one year, such as large-size equipment and ships, and electric power equipment. In the case of such products, the production scheduler is used as a project management tool for large schedule plans. We will describe the features of job-order production and the method of utilization of the production scheduler for this purpose based on the machining and assembly model. This is the parts configuration for machining and assembly. The process flow is from the left to the right, and the planning operation flow is from the right to the left. The machining department creates a machining plan for each of the parts associated with the assembly plan. The assembly department creates the plan for product assembly, unit assembly, and the parts these require. If the arrival of the raw materials is delayed at the machining department, causing in turn the production of parts to be delayed, that delay is dealt with in the assembly department. The main points regarding the use of the production scheduler to handle issues of job-order production are the following. Shorten the time required for planning Be able to make more realistic available to promises by creating production plans for multiple orders at one go Be able to check delivery delays while planning, allowing you to take measures in advance Be able to easily check loads associated with forecast and confirmed production Be able to review plans thanks to shorter schedule planning time, for shorter cycles and improved accuracy I will introduce these points while giving demonstrations with the production scheduler.