System for requistioning and distributing material in a manufacturing environment

• US 5,193,065 A
• Filed: 12/03/1990
• Issued: 03/09/1993
• Est. Priority Date: 12/03/1990
• Status: Expired due to Term

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: Guerindon, Pierre C., Barrow, Jon E.
• Primary Examiner(s): Smith, Jerry
• Assistant Examiner(s): Garland, Steven R.
• Application Number:
  US07/621,662
• Time in Patent Office: 827 Days
• Field of Search: 364/401, 364/403, 364/468, 364/478, 364/479
• US Class Current: 700/106
• CPC Class Codes: G06Q 10/08 Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

A system for requisitioning and distributing material in a manufacturing environment is provided. A manufacturing station stores and utilizes the material and produces a first missing resource signal in response to depleting a predetermined amount of the material in the manufacturing station. An intelligent storage unit stores the material. A computer system receives the first missing resource signal, responsively searches the storage unit, produces a material transfer command signal in response to the presence of the material, and produces a pull trigger signal in response to the absence of the material. A microcomputer produces a material schedule. A logic device receives the pull trigger signal and produces a depletion signal in response to the pull trigger signal and the material schedule.

Claims

1. A system for requisitioning and distributing material in a manufacturing environment, comprising:

local cell means for storing and utilizing material and producing a first missing resource signal in response to the amount of material in said local cell means being equal to a predetermined minimum value;

storage means for storing said material;

control means for receiving said first missing resource signal, responsively searching said storage means, producing a material transfer command signal in response to the presence of said material, and producing a pull trigger signal in response to the absence of said material;

logistics means for receiving said material transfer command signal and responsively moving said material from said storage means to said local cell means;

planning means for producing a material schedule; and

logic means for receiving said pull trigger signal and said material schedule, and producing a depletion signal in response to said pull trigger signal and said material schedule.

2. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 1, including supplying means for receiving said depletion signal and responsively delivering said material to said local cell means.

3. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 2, wherein said logic means is responsive to a predetermined lead time required to deliver the material from said supplying means to said local cell means.

4. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 2, wherein said supplying means includes means for delivering said material to said local cell means in response only to said material schedule.

5. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 1, wherein said logical means includes means for producing an exception signal in response to said pull trigger signal and said material schedule.

6. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 5, wherein said planning means includes means for receiving said exception signal and responsively modifying said material schedule.

7. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 1, including operational means for maintaining an inventory list of said material contained in said local cell means and said storage means.

8. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 7, wherein said control means searches said storage means by accessing said material inventory list.

9. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 7, wherein said control means updates said material inventory list in response to producing said material transfer command signal.

10. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 1, wherein said planning means classifies said material into various types, in response to said material schedule.

11. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 10, wherein said logic means distinguishes between said material types and producing said depletion signal in response to said material types.

12. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 1, wherein said local cell means includes a manufacturing station adapted to manufacture a product.

13. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 1, wherein said storage means includes:

local storage means for storing said material used by said local cell means; and

global storage means for temporarily storing said material.

14. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 13, wherein said control means includes:

local control means for receiving said first missing resource signal, responsively searching said local storage means, producing a material transfer command signal in response to the presence of said material, and producing a second missing resource signal in response to the absence of said material; and

global control means for receiving said second missing resource signal, responsively searching said global storage means, producing a material transfer command signal in response to the presence of said material, and producing a pull trigger signal in response to the absence of said material.

15. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 14, wherein said logistics means moves said material from local storage means to said local cell means, in response to receiving said material transfer command signal from said local control means.

16. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 14, wherein said logistics means moves said material from global storage means to said local cell means, in response to receiving said material transfer command signal from said global control means.

17. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 1, wherein the predetermined minimum value is based on a predetermined lead time required to deliver material from said supplying means to said local cell means.

18. A system for requisitioning and distributing material in a manufacturing environment, comprising:

local cell means for storing and utilizing material and producing a first missing resource signal in response to the amount of material in said local cell means being equal to a predetermined minimum value;

local storage means for storing said material;

local control means for receiving said first missing resource signal, responsively searching said local storage means, producing a material transfer command signal in response to the presence of said material, and producing a second missing resource signal in response to the absence of said material;

logistics means for receiving said material transfer command signal and responsively moving said material from said local storage means to said local cell means;

global storage means for storing said material;

global control means for receiving said second missing resource signal, responsively searching said global storage means, producing a material transfer command signal in response to the presence of said material, and producing a pull trigger signal in response to the absence of said material;

planning means for producing a material schedule; and

logical means for receiving said pull trigger signal and said material schedule, and producing a depletion signal in response to said pull trigger signal and said material schedule.

19. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 18, including supplying means for receiving said depletion signal and responsively delivering said material to said local cell means.

20. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 18, wherein said logic means includes means for producing an exception signal in response to said pull trigger signal and said material schedule.

21. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 20, wherein said planning means includes means for receiving said exception signal and responsively modifying said material schedule.

22. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 18, wherein said logistics means moves said material from said global storage means to said local cell means in response to receiving said material transfer command signal signal from said global control means.

23. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 18, including:

remote cell means for storing and utilizing material;

remote storage means for storing said material; and

remote control means for controlling the movement of said material in said remote cell and remote storage means.

24. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 23, wherein said global control means includes means for searching said remote storage means, in response to receiving said second missing resource signal, and producing a material transfer command signal in response to the presence of said material.

25. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 24, wherein said logistics means moves said material from said remote storage means to said local cell means, in response to receiving said material transfer command signal from said global control means.

26. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 23, including operational means for maintaining inventory lists of the material contained in said local and remote cell means, and said local, global, and remote storage means.

27. A system for requisitioning and distributing material in a manufacturing environment, as set forth in claim 26, wherein said local, global and remote control means search said local, global, and remote storage means by interacting with said material inventory list.

28. A method for requisitioning and distributing material in a manufacturing environment, wherein the manufacturing environment includes a local manufacturing station adapted to utilize the material, a local storage unit adapted to store the material, and a logistics unit adapted to move the material, comprising the steps of:

utilizing said stored material and producing a first missing resource signal in response to the amount of material in said local storage unit being equal to a predetermined minimum value;

receiving said first missing resource signal, responsively searching said local storage unit, producing a material transfer command signal in response to the presence of said material, and producing a pull trigger signal in response to the absence of said material;

producing a material schedule; and

receiving said pull trigger signal and said material schedule, and producing a depletion signal in response to said pull trigger signal and said material schedule.

29. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 28, including the step of receiving said depletion signal and responsively delivering said material to said local manufacturing station.

30. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 29, wherein said step of producing said depletion signal is responsive to a predetermined lead time required to deliver the material to said local manufacturing station.

31. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 29, wherein said step of delivering said material is responsive only to said material schedule.

32. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 28, including the step of producing an exception signal in response to said pull trigger signal and said material schedule.

33. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 32, including the step of receiving said exception signal and responsively modifying said material schedule.

34. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 28, including the step of receiving said material transfer command signal and responsively moving said material from said local storage unit to said local manufacturing station.

35. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 28, including the step of maintaining an inventory list of said material.

36. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 35, including the step of searching said local storage unit by accessing said material inventory list.

37. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 35, including the step of updating said material inventory list in response to producing said material transfer command signal.

38. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 28, including the step of classifying said material into various types in response to said material schedule.

39. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 38, wherein said step of producing said depletion signal includes the step of distinguishing between said material types and producing said depletion signal in response to said material types.

40. A method for requisitioning and distributing material in a manufacturing environment, wherein the manufacturing environment includes a local and remote manufacturing station adapted to utilize the material and a local, global, remote storage unit adapted to store the material, and a logistics unit adapted to move the material, comprising the steps of:

utilizing said stored material and producing a first missing resource signal in response to the amount of material in said local manufacturing station being equal to a predetermined minimum value;

receiving said first missing resource signal, responsively searching said local storage unit, producing a material transfer command signal in response to the presence of said material, and producing a second missing signal in response to the absence of said material;

receiving said second missing resource signal, responsively searching said global storage unit, producing a material transfer command signal in response to the presence of said material, and producing a pull trigger signal in response to the absence of said material;

producing a material schedule; and

receiving said pull trigger signal and said material schedule, and producing a depletion signal in response to said pull trigger signal and said material schedule.

41. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 40, including the step of receiving said depletion signal and responsively delivering said material to said local manufacturing station.

42. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 40, including the step of producing an exception signal in response to said pull trigger signal and said material schedule.

43. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 42, including the step of receiving said exception signal and responsively modifying said material schedule.

44. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 40, including the step of receiving said material transfer command signal signal and responsively moving said material from said local storage unit to said local manufacturing station.

45. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 40, including the step of moving said material from said global storage unit to said local manufacturing station in response to receiving said material transfer command signal.

46. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 40, including the step of searching said remote storage unit, in response to receiving said second missing resource signal, and producing a material transfer command signal in response to the presence of said material.

47. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 46, including the step of moving said material from said remote storage unit to said local manufacturing station, in response to receiving said material transfer command signal.

48. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 40, including the step of maintaining inventory lists of the material contained in said local manufacturing station, and said local, global, and remote storage unit.

49. A method for requisitioning and distributing material in a manufacturing environment, as set forth in claim 48, including the step of searching said local, global, and remote storage units by interacting with said material inventory lists.