METHOD AND SYSTEM FOR MANUFACTURING AN ARTICLE USING PORTABLE HAND-HELD TOOLS

• US 20090192644A1
• Filed: 01/30/2008
• Published: 07/30/2009
• Est. Priority Date: 01/30/2008
• Status: Abandoned Application

• Current Assignee: Deere & Company, Iowa State University Research Foundation Incorporated (Iowa State University)
• Original Assignee: Iowa State University Research Foundation Incorporated (Iowa State University)
• Inventors: Meyer, Thomas J., Martinez, Marisol, Wong, Peter W., Sinapov, Jivko, Hilby, Michael J., Winer, Eliot, Meyers, Michael J., Miller, Matthew A., Stoytchev, Alexander T.
• Application Number:
  US12/022,230
• Publication Number:
  US 20090192644A1
• Time in Patent Office: Days
• US Class Current: 700/109
• CPC Class Codes: G05B 19/41805 characterised by assembly
• CPC Class Codes: G05B 2219/31027 Computer assisted manual assembly CAA, display operation, tool, result
• CPC Class Codes: G05B 2219/37618 Observe, monitor position, posture of tool
• CPC Class Codes: G05B 2219/45127 Portable, hand drill
• CPC Class Codes: G05B 2219/45203 Screwing
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

A method of manufacturing an article includes the steps of: establishing a defined location for a tool activity to occur; determining an actual location of the tool; comparing the actual location of the tool with the defined location; ascertaining an occurrence of the tool activity at the actual location; and verifying whether the tool activity occurred at the defined location.

Claims

1. A method of manufacturing an article, comprising the steps of:

establishing a defined location for a tool activity to occur;

determining an actual location of the tool;

comparing said actual location of the tool with said defined location;

ascertaining an occurrence of said tool activity at said actual location; and

verifying whether said tool activity occurred at said defined location.

2. The method of manufacturing an article of claim 1, including the steps of:

repeating for at least one other defined location each of said establishing, determining, comparing, ascertaining and verifying steps; and

storing data for each said defined location, said corresponding actual location, and said corresponding tool activity.

3. The method of manufacturing an article of claim 2, including the step of tracking said actual locations based upon said stored data.

4. The method of manufacturing an article of claim 2, including the step of tracking said tool activities based upon said stored data.

5. The method of manufacturing an article of claim 2, including the step of identifying the article based upon said stored data.

6. The method of manufacturing an article of claim 5, including the step of correlating each said defined location to a point on the identified article.

7. The method of manufacturing an article of claim 2, wherein said defined locations are established using one of a CAD model, a numerical analysis technique, and an empirical analysis.

8. The method of manufacturing an article of claim 2, including the steps of:

generating a 3-dimensional representation of the article to be assembled;

correlating each said defined location to a point on said 3-dimensional representation;

assigning a defined tool activity to each correlated point on said 3-dimensional representation; and

comparing each said defined tool activity at each correlated point with said tool activity at said actual location.

9. The method of manufacturing an article of claim 2, including the step of providing feedback to an operator dependent upon said steps of verifying whether said tool activities occurred at said corresponding defined locations.

10. The method of manufacturing an article of claim 9, wherein said feedback includes one of:

shutting off the tool;

not allowing the article to advance to a next work station;

triggering a warning light; and

generating a report.

11. The method of manufacturing an article of claim 1, wherein said step of determining an actual location of the tool is carried out using an optical target on the tool and at least one camera, said at least one camera determining a location of the optical target relative to a known coordinate.

12. The method of manufacturing an article of claim 11, wherein said optical target is one of an active target and an inactive target.

13. The method of manufacturing an article of claim 1, wherein said tool is a hand-held portable tool.

14. The method of manufacturing an article of claim 13, wherein said tool is one of a torque gun, a torque wrench, a weld gun, a paint gun, a pulse gun, an air tool, and a banding tool.

15. The method of manufacturing an article of claim 1, including the step of providing feedback to an operator dependent upon said step of verifying whether said tool activity occurred at said defined location.

16. The method of manufacturing an article of claim 15, wherein said feedback includes one of:

shutting off the tool;

not allowing the article to advance to a next work station;

triggering a warning light;

displaying completed work on a model; and

generating a report.

17. A system for manufacturing an article, comprising:

a tool for carrying out a tool activity on the article;

a memory storing a defined location for said tool activity to occur;

a location detector for detecting an actual location of said tool; and

an electrical processor in communication with each of said memory and said location detector, said electrical processor being configured for comparing said actual location of said tool with said defined location, ascertaining an occurrence of said tool activity at said actual location; and

verifying whether said tool activity occurred at said defined location.

18. The system for manufacturing an article of claim 17, wherein said tool is one of a torque gun, a torque wrench, a weld gun, a paint gun, a pulse gun, an air tool, and a banding tool.

19. The system for manufacturing an article of claim 17, wherein:

said memory stores a plurality of defined locations for respective said tool activities to occur;

said location detector detects a plurality of actual locations of said tool; and

said electrical processor compares said actual locations of said tool with respective said defined locations, ascertains an occurrence of said tool activity at each said actual location, and verifies whether each said tool activity occurred at a respective said defined location.

20. The system for manufacturing an article of claim 17, wherein said location detector includes an optical target on said tool and a camera, said camera determining a location of the optical target relative to a known coordinate.

21. The system for manufacturing an article of claim 20, wherein said optical target is one of an active target and an inactive target.

22. The system for manufacturing an article of claim 17, wherein said defined location is established using one of a CAD model, a numerical analysis technique, and an empirical analysis.

23. A system for manufacturing an article, comprising:

a memory storing a defined location for a tool activity to occur;

a location detector for detecting an actual location of said tool; and

an electrical processor in communication with each of said memory and said location detector, said electrical processor being configured for comparing said actual location of the tool with said defined location, ascertaining an occurrence of said tool activity at said actual location; and

verifying whether said tool activity occurred at said defined location.

24. The system for manufacturing an article of claim 23, wherein:

said memory is configured for storing a plurality of defined locations for respective said tool activities to occur;

said location detector detects a plurality of actual locations of said tool; and

said electrical processor is configured for comparing said actual locations of the tool with respective said defined locations, ascertaining an occurrence of said tool activity at each said actual location, and verifying whether each said tool activity occurred at a respective said defined location.

25. The system for manufacturing an article of claim 23, wherein said location detector includes an optical target on said tool and a camera, said camera determining a location of the optical target relative to a known coordinate.