Programmable light director system

• US 4,190,890 A
• Filed: 11/16/1977
• Issued: 02/26/1980
• Est. Priority Date: 11/16/1977
• Status: Expired due to Term

• Current Assignee: Grumman Aerospace Corporation (Northrop Grumman Corporation)
• Original Assignee: Grumman Aerospace Corporation (Northrop Grumman Corporation)
• Inventors: Marx, Warren G.
• Primary Examiner(s): Smith, Jerry
• Application Number:
  US05/852,076
• Time in Patent Office: 832 Days
• Field of Search: 364/491, 29/720, 29/721, 29/739, 29/748, 29/755, 33/278-280, 356/2
• US Class Current: 716/53
• CPC Class Codes: H01B 13/01227 using a layout board
• CPC Class Codes: Y10T 29/53087 with signal, scale, illuminator, or optical viewer
• CPC Class Codes: Y10T 29/53213 Assembled to wire-type conductor

Abstract

A dual axis, laser powered light director system for routing wire of electric harnesses includes a laser light source carried on a carriage which is moved longitudinally of a wire harness assembly board. The laser light beam is directed to a rotatable mirror which directs the light beam transversely of the harness board. The movement of the carriage and mirror are computer controlled to move the light beam along a sequence of node points to form a continuous wire path for each wire in the harness. A machine readable code wand scanner serves as a communication interface between an operator and computer controls for purposes of wire identification.

Claims

1. A programmable light director system for randomly routing wires on a harness board comprising:

(i) light source means for generating a light beam;

(ii) two-axis control means operative with said light source means for controlling the projection of said light beam on said harness board;

(iii) central processor means operatively coupled to said two-axis control means to generate command signals thereto from predetermined wire path data base to cause said two-axis control means to move the light beam continuously along a wire path in response thereto, said central processor means including scanning wand input means for automatically identifying each of said wires to be routed, said central processor means further including digitizing means for assigning coordinates to the points comprising said wire path.

2. A programmable light director of claim 1, wherein said two-axis control means includes means for controlling the linear position of said light beam relative to said harness board.

3. A programmable light director of claim 2, wherein said two-axis control means includes means for controlling the angular position of said light beam relative to said harness board.

4. A programmable light director of claim 1, wherein said two-axis control means includes means for controlling the angular position of said light beam relative to said harness board.

5. A programmable light director of claim 1, wherein said light source means includes a light source arranged to generate a light beam along a first path portion;

and rotatable reflector means located at the end of said first path portion; and

said two-axis control means includes means for rotating said reflector means.

6. A programmable light director of claim 5, wherein said light source includes a laser and collimating means.

7. A programmable light director of claim 5, further including carriage means carrying said light source means;

and said two-axis control means includes means for moving said carriage means longitudinally of said harness board.

8. A programmable light director of claim 7, wherein said reflector means is arranged to cause said beam to scan the harness board transversely.

9. A programmable light director system for randomly routing wires for a wire harness comprising:

(i) a harness board;

(ii) carriage means mounted for translation relative to said harness board;

(iii) motor means under the control of central processor means for moving said carriage;

(iv) a light beam assembly mounted on said carriage means, said light beam assembly including a light source arranged to generate a light beam continuously along a first path portion;

rotatable reflector means located at the end of said first path portion; and

means for rotating said reflector means such that said light beam may be reflected from said first path portion onto said harness board.

10. A light director system of claim 9, wherein said light source includes a laser and collimating means.

11. A light director system of claim 9, wherein said carriage means is mounted for translation along an edge of said harness board.

12. A light director system of claim 11, wherein said reflector means is arranged to cause said light beam to scan said board transversely.

13. A light director system of claim 9, wherein said first path portion is an upwardly directed path portion.

14. A light director system of claim 9, wherein said harness board is arranged at an inclined plane to the horizontal.

15. A light director system of claim 9, further including means for mounting said light beam assembly on said carriage means for rotation of the light assembly in the horizontal plane.

16. A light director system of claim 9, wherein said reflector means includes a flat reflector surface.

17. A light director system of claim 16, wherein said reflector means is a mirrored surface.

18. A method of randomly routing wires on a wire harness board comprising the steps of:

identifying automatically each of said wires to be routed;

providing a predetermined harness pattern having a plurality of wire paths;

assigning numbers to a plurality of points along the harness pattern including the end points thereof;

digitizing each of said points to form a (1) point number coordinate data set;

compiling a (2) wire path data set for each of said wire paths from said assigned point numbers such that each of said number sets progresses from the initial to terminal number of its associated path;

providing a (3) discrete wire identification-path data set relating each wire to an associated path data set;

utilizing data sets (1), (2) and (3) to identify a discrete wire for routing in the harness, assign the identified wire to a path data set, and to sequentially transform the path data set numbers into coordinates, and moving a light beam continuously along the coordinates to trace out the path of each wire on said harness board.

19. A method of directing a light beam onto a surface to display a continuous light point path comprising the steps of:

(i) moving a light source along a path relative to said surface;

(ii) directing a beam from said source along a first path portion;

(iii) reflecting said beam at the end of said first path portion with a reflector;

(iv) rotating said reflector to cause said beam to be reflected along any one of a plurality of second path portions determined by the angle between said first path portion and said reflector; and

(v) correlating the linear movement of the light source with the rotation of said reflector, whereby two-axis control of said light beam is achieved.

20. A method of claim 19, wherein said first light path is an upwardly inclined path.

21. A method of claim 19, wherein said light source is moved along a linear path relative to said surface.