Method of planning a production schedule and an apparatus for planning a production schedule

• US 5,946,663 A
• Filed: 11/27/1996
• Issued: 08/31/1999
• Est. Priority Date: 11/30/1995
• Status: Expired due to Fees

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Kominami, Hirokazu, Uenishi, Masahiro, Miura, Yukinori, Tanaka, Masayuki, Yamamura, Satoru, Shintani, Kazuhiro, Yamada, Itsuhiro
• Primary Examiner(s): Kemper, Melanie A.
• Application Number:
  US08/757,566
• Time in Patent Office: 1,007 Days
• Field of Search: 705/8, 705/9, 705/28, 364/468.01, 364/468.03, 364/468.05, 364/468.06, 364/468.07, 364/468.12, 364/468.09, 364/468.28
• US Class Current: 705/7.25
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
• CPC Class Codes: G06Q 10/06315 Needs-based resource requirements planning or analysis
• CPC Class Codes: G06Q 10/06316 Sequencing of tasks or work

Abstract

The method of planning a production schedule of the present invention has a production order preparing unit which, in response to an order, the completed product stock is allocated to the previous production schedule planned before an order change, and which prepares a production order. The production schedule which is previously planned is allocated to the production order which has been subjected to allocation of the completed product stock to the order, in accordance with information such as the product identification, the quantity, and the delivery time. The allocated portion of the previous production schedule is used as it is in the current production schedule.

Claims

1. A method of planning a production schedule comprising:

an operating data storing step of, in order to plan a production schedule in a processing factory, storing management data such as order information, stock information, and a production schedule, and basic data of said processing factory;

a completed product stock allocating step of allocating order information to completed product stock information, and determining an order to be produced;

a production schedule allocating step of integrating an order among orders to be produced, said order being included in a previous production schedule planned before an order change, into a new production schedule as a production-scheduled order;

a production schedule deleting step of deleting a production schedule of said previous production schedule planned before an order change, this production schedule not including the orders to be produced;

an operation request information preparing step of determining a production order from the orders to be produced, the production order being to be again subjected to planning of said new production schedule, said operation request information preparing step comprising;

an operation developing step of preparing operation request information for determining a sequence of operations to be executed, from operation pattern information for producing a product for each production order, and obtaining said operation request information consisting of at least one operation pattern;

an operation unit production quantity calculating step of allocating operation request information for each production order to an intermediate stock, and obtaining a quantity which is to be actually produced, for each operation;

an operation unit charge quantity calculating step of obtaining a quantity to be charged, on the basis of non-defective product rate information of each operation; and

a simulation processing step which comprises;

a lot-size optimizing step of dividing an operation request or joining operation requests so that an optimum lot size is obtained in accordance with a kind of an operation; and

a simulation step of conducting scheduling at the optimized lot size, and said simulation step having a scheduling rule set in order to dispatch a prepared operation request to a resource such as production equipment in a simulation system said, scheduling rule set having

a releasing rule which determines charge enabled dates and hours for the production orders;

a filtering rule which preliminarily selects an operation;

a routing rule which selects a resource such as equipment;

a dispatching rule which dispatches a prepared operation request to a selected resource; and

a postprocessing rule which, immediately after dispatching conducts a control on subsequent dispatching on the basis of information of the dispatching.

2. A method of planning a production schedule in accordance with claim 1, wherein said operation request information preparing step further comprises:

a part developing step of, in a case where the product is configured by plural parts or where a specific intermediate part is changed to different parts or products as a result of a subsequent processing, developing parts of the product, thereby preparing part configuration information.

3. An apparatus for planning a production schedule comprising:

operating data storing means for, in order to plan a production schedule in a processing factory, storing management data such as order information, stock information, and a production schedule, and basic data of said processing factory;

completed product stock allocating means for allocating order information to completed product stock information, and determining an order to be produced;

production schedule allocating means for integrating an order among orders to be produced, the order being included in a previous production schedule planned before an order change, into a new production schedule as a production-scheduled order;

production schedule deleting means for deleting a production schedule of said previous production schedule planned before an order change, this production schedule not including the orders to be produced;

operation request information preparing means for determining a production order from the orders to be produced, the production order being to be again subjected to planning of a production schedule, said operation request information preparing means comprising;

operation developing means for preparing operation request information for determining a sequence of operations to be executed, from operation pattern information for producing a product for each production order, and obtaining said operation request information consisting of at least one operation pattern;

operation unit production quantity calculating means for allocating operation request information for each production order to an intermediate stock, and obtaining a quantity which is to be actually produced, for each operation;

operation unit charge quantity calculating means for obtaining a quantity to be charged, on the basis of non-defective product rate information of each operation; and

a simulation processing means which comprises;

lot-size optimizing means for dividing an operation request or joining operation requests so that an optimum lot size is obtained in accordance with a kind of an operation; and

simulation means which conducts scheduling at the optimized lot size and in order to dispatch a prepared operation request to a resource such as production equipment in a simulation system, said simulation means comprises a scheduling rule set having;

a releasing rule which determines charge enabled dates and hours for the production orders;

a filtering rule which preliminarily selects an operation;

a routing rule which selects a resource such as equipment;

a dispatching rule which dispatches a prepared operation request to a selected resource; and

a postprocessing rule which, immediately after dispatching, conducts a control on subsequent dispatching on the basis of information of the dispatching.

4. An apparatus for planning a production schedule in accordance with claim 3, wherein said operation request information preparing means further comprises:

part developing means for, in a case where the product is configured by plural parts or where a specific intermediate part is changed to different parts or products as a result of a subsequent processing, developing parts of the product, thereby preparing part configuration information.