Automated manufacturing costing system and method

• US 5,249,120 A
• Filed: 01/14/1991
• Issued: 09/28/1993
• Est. Priority Date: 01/14/1991
• Status: Expired due to Fees

• Current Assignee: Charles Stark Draper Laboratory Incorporated
• Original Assignee: Charles Stark Draper Laboratory Incorporated
• Inventors: Foley, Michael
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Hazard, Jennifer L.
• Application Number:
  US07/641,161
• Time in Patent Office: 988 Days
• Field of Search: 364/401, 364/402, 364/403, 364/406, 364/468, 364/478, 364/464.01, 364/148, 364/156
• US Class Current: 705/1.1
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
• CPC Class Codes: G06Q 10/0631 Resource planning, allocation, distributing or scheduling for enterprises or organisations
• CPC Class Codes: G06Q 10/087 Inventory or stock management, e.g. order filling, procurement or balancing against orders
• CPC Class Codes: G06Q 30/0283 Price estimation or determination

Abstract

An automated manufacturing cost estimating method and system with indirect cost allocation which identifies a material in an initial state for manufacturing a product in a final state; defines an operation for converting the material from its initial state into the final state of the product; calculates the direct labor cost for each operation based on direct labor hours and calculates the indirect cost specifically allocated for each operation based on consumption of overhead cost elements by the operation; and sums the cost calculated for each operation to determine the total cost of manufacture of a part. Also disclosed is a cost analyzing method and system which utilizes the cost estimating method and system by identifying a plurality of different materials in an initial state for manufacturing a product in a final state and defining a number of manufacturing operations for converting each of the different materials from its initial state into the final state of the product; generating a plurality of paths through the interconnected operations between the different materials in the initial state and the product in the final state; determining a predetermined cost parameter associated with each operation; and accumulating the determined cost parameters along each path.

Claims

1. An automated manufacturing cost estimating system with indirect cost allocation comprising:

means for identifying a material in an initial state for manufacturing a product in a final state;

means for defining a plurality of operations for converting said material from its initial state into the final state of the product, said plurality of operations being interconnected to define a plurality of paths;

means for calculating a direct labor cost value for each said operation based on direct labor hours and calculating an indirect cost value specifically allocated for each said operation based on consumption of overhead cost elements by the operation; and

means for summing costs calculated for each operation and each path to determine the total cost of manufacture of a part.

2. The system of claim 1 in which said means for calculating includes means for computing the cost of materials used in each said operation to obtain the total cost of converting the material from its said initial state to the final state.

3. The system of claim 1 in which said means for calculating includes means for computing the cost of equipment used in each said operation.

4. The system of claim 1 in which said means for calculating includes means for computing the cost of tooling used in each said operation.

5. The system of claim 1 in which said means for calculating includes means for computing the cost of facilities used in each said operation.

6. The system of claim 1 in which said means for calculating the direct labor cost value includes means for adjusting labor costs to accommodate learning curve effects.

7. The system of claim 3 in which said means for computing the cost of equipment includes means for amortizing the cost of equipment.

8. The system of claim 1 in which said means for calculating the direct labor costs includes means for determining both direct and identifiable indirect labor costs.

9. An automated manufacturing cost estimating method with indirect cost allocation comprising:

identifying a material in an initial state for manufacturing a product in a final state;

defining a plurality of operations for converting said material from its initial state into the final state of the product, said plurality of operations being interconnected to define a plurality of paths;

calculating a direct labor cost value for each said operation based on direct labor hours and calculating an indirect cost value specifically allocated for each said operation based on consumption of overhead elements by the operation; and

summing the costs allocated for each operation and each path to determine the total cost of manufacture of a part.

10. The method of claim 9 in which calculating, includes computing the cost of materials used in each said operation to obtain the total cost of converting the material from its said initial state to the final state.

11. The method of claim 9 in which calculating, includes computing the cost of equipment used in each said operation.

12. The method of claim 9 in which calculating, includes computing the cost of tooling used in each said operation.

13. The method of claim 9 in which calculating includes computing the cost of facilities used in each said operation.

14. The method of claim 9 in which calculating the direct labor costs includes adjusting labor costs to accommodate learning curve effects.

15. The method of claim 11 in which computing the cost of equipment includes amortizing the cost of equipment.

16. The method of claim 9 in which calculating the direct labor costs includes determining both direct and identifiable indirect labor costs.

17. An automated manufacturing cost analysis system comprising:

means for identifying a plurality of different materials in an initial state for manufacturing a product in a final state;

means for defining a number of interconnected manufacturing operations for converting each of said different materials from its said initial state into the final state of the products;

means for generating a plurality of paths through said interconnected manufacturing operations between said different materials in the initial state and said product in the final state;

means for determining a predetermined cost parameter associated with each operation; and

means for accumulating the determined cost parameters along each said path.

18. The automated manufacturing cost analysis system of claim 17 in which said means for defining each operation includes means for associating each operation with an input state and an output state to define a node.

19. The automated manufacturing cost analysis system of claim 18 in which said means for generating includes means for executing a logic tree algorithm through said nodes.

20. The automated manufacturing cost analysis system of claim 17 in which said means for determining a predetermined cost parameter includes means for calculating direct labor costs for each said operation based on direct labor hours and calculating indirect costs specifically allocated for each said operation based on consumption of overhead cost elements by the operation.

21. The automated manufacturing cost analysis system of claim 19 in which said means for executing executes through said nodes from the final state to an initial state.

22. The automated manufacturing cost analysis system of claim 21 in which said means for executing includes means for finding the next previous node, means for ascertaining whether said next previous node is in a unique path that has not been traveled before by the system in a present execution cycle, means for retrieving data associated with that node if that node is in a unique path and calculating costs for that node, and means for summing the costs for all the nodes in a path when an initial node is obtained.

23. The automated manufacturing cost analysis system of claim 22 in which said means for executing further includes means, responsive to a present node not being in a unique path, for finding another next previous node if there are any other possible unique paths.

24. The automated manufacturing cost analysis system of claim 23 in which said means for executing further includes means, responsive to the present node being in a unique path, for determining whether said present node contains the final state.

25. The automated manufacturing cost analysis system of claim 24 in which said means for executing further includes means, responsive to a present node not containing a final state to back up to a nonprior node with the same final state to find another unexplored branch.

26. An automated manufacturing cost analysis method comprising:

identifying a plurality of different materials in an initial state for manufacturing a product in a final state;

defining a number of interconnected manufacturing operations for converting each of said different materials from its said initial state into the final state of the product;

generating a plurality of paths through said interconnected manufacturing operations between said different materials in the initial state and said product in the final state;

determining a predetermined cost parameter associated with each operation; and

accumulating the determined cost parameters along each said path.

27. The automated manufacturing cost analysis method of claim 26 in which defining each operation includes associating each operation with an input state and an output state to define a node.

28. The automated manufacturing cost analysis method of claim 27 in which generating includes executing a logic tree algorithm through said nodes.

29. The automated manufacturing cost analysis method of claim 26 in which determining a predetermined cost parameter includes calculating direct labor costs for each said operation based on direct labor hours and calculating indirect costs specifically allocated for each said operation based on consumption of overhead cost elements by the operation.

30. The automated manufacturing cost analysis method of claim 28 in which executing includes advancing through said nodes from the final state to an initial state.

31. The automated manufacturing cost analysis method of claim 30 in which executing includes finding the next previous node, ascertaining whether said next previous node is in a unique path that has not been traveled before by the system in a present execution cycle, retrieving data associated with that node if that node is in a unique path and calculating costs for that node, and for summing the costs for all the nodes in a path when an initial node is obtained.

32. The automated manufacturing cost analysis method of claim 31 in which executing further includes, when a present node is not in a unique path, finding another next previous node if there are any other possible unique paths.

33. The automated manufacturing cost analysis method of claim 32 in which executing further includes, when said present ode is in a unique path, determining whether said present node contains the final state.

34. The automated manufacturing cost analysis method of claim 33 in which executing further includes, when a present node does not contain a final state, backing up to a nonprior node with the same final state to find another unexplored branch.