Portable coordinate measurement machine with improved surface features

• US 6,925,722 B2
• Filed: 02/13/2003
• Issued: 08/09/2005
• Est. Priority Date: 02/14/2002
• Status: Expired due to Term

• Current Assignee: Faro Technologies Incorporated
• Original Assignee: Faro Technologies Incorporated
• Inventors: Hasloecher, Kenneth J., Raab, Simon, Barber, Marc, Sajedi, Seyed Ali
• Primary Examiner(s): Fulton, Christopher W.
• Assistant Examiner(s): Gonzalez, Madeline
• Application Number:
  US10/366,635
• Publication Number:
  US 20030172537A1
• Time in Patent Office: 908 Days
• Field of Search: 335/03, 335/56, 335/58, 335/59, 335/61, 901/15, 901/48, 901/28, 744/900.1, 744/900.5
• US Class Current: 33/503
• CPC Class Codes: B23Q 35/04 using a feeler or the like travelling along the outline of the pattern, model or drawing; Feelers, patterns, or models therefor
• CPC Class Codes: B25J 17/025 mounted in series
• CPC Class Codes: B25J 19/0016 using springs
• CPC Class Codes: B25J 19/0091 Shock absorbers in general F16F
• CPC Class Codes: B25J 9/0012 making use of synthetic construction materials, e.g. plastics, composites
• CPC Class Codes: B25J 9/023 Cartesian coordinate type
• CPC Class Codes: B25J 9/06 characterised by multi-articulated arms
• CPC Class Codes: B25J 9/1602 characterised by the control system, structure, architecture
• CPC Class Codes: G01B 11/005 coordinate measuring machines
• CPC Class Codes: G01B 11/03 by measuring coordinates of points
• CPC Class Codes: G01B 11/25 by projecting a pattern, e.g. one or more lines, moiré fringes on the object G01B11/255 takes precedence ; image analysis for depth or shape recovery G06T7/50
• CPC Class Codes: G01B 21/045 Correction of measurements G01B9/02055 takes precedence
• CPC Class Codes: G01B 5/004 for measuring coordinates of points
• CPC Class Codes: G01B 5/008 using coordinate measuring machines
• CPC Class Codes: G06T 7/521 from laser ranging, e.g. using interferometry; from the projection of structured light
• CPC Class Codes: Y10S 33/01 Magnetic

Abstract

A portable coordinate measurement machine comprises an articulated arm having a plurality of jointed arm segments. The arm segments include replaceable protective coverings and/or bumpers to limit high impact shock and abrasion as well as to provide an ergonomically and/or aesthetically pleasing gripping location.

Claims

1. A portable coordinate measurement machine (CMM) for measuring the position of an object in a selected volume, comprising:

a manually positionable articulated arm having opposed first and second ends, said arm including a plurality of jointed arm segments, each arm segment including at least one position transducer for producing a position signal, said jointed arm segments further including pairs of long jointed arm segments and short jointed arm segments, each of said long jointed arm segments being substantially perpendicular to said short jointed arm segments;

a measurement probe attached to a first end of said articulated arm;

an electronic circuit which receives the position signals from the transducers and provides a digital coordinate corresponding to the position of the probe in a selected volume;

a protective covering over at least a portion of said CMM, said protective covering comprising a molded, polymeric material for protection of said CMM from impact shocks; and

wherein at least one of said arm segments includes said protective covering in the form of an outer sleeve, said outer sleeve surrounding at least one of said long jointed arm segments.

2. The CMM of claim 1 wherein said polymeric material comprises an elastomeric material.

3. The CMM of claim 1 wherein said outer sleeve is replaceable.

4. The CMM of claim 3 wherein said outer sleeve comprises a two-part clam shell.

5. The CMM of claim 4 wherein said clam shell is attached by at least one of threaded fasteners and spring clips.

6. The CMM of claim 1 wherein said outer sleeve has an outer tapered configuration.

7. The CMM of claim 1 wherein said outer sleeve comprises a rigid polymeric material.

8. The CMM of claim 1 wherein said outer sleeve includes at least one support post for resting against an adjacent arm segment and preventing the impact between adjacent arm segments.

9. The CMM of claim 1 wherein at least one of the joints of the jointed arm segment further includes said protective covering in the form of at least one bumper.

10. The CMM of claim 9 wherein said bumper comprises an elastomeric material.

11. The CMM of claim 9 wherein said bumper has a circular perimeter.

12. The CMM of claim 9 wherein:

said bumper is positioned on at least one of said short jointed arm segments.

13. The CMM of claim 12:

said outer sleeve surrounds at least two of said long jointed arm segments.

14. The CMM of claim 12 wherein said at least one short jointed arm segment includes a pair of opposed ends and including:

a bumper on each of said opposed ends.

15. The CMM of claim 12 wherein:

said outer sleeve surrounds at least three of said long jointed aim segments.

16. The CMM of claim 1 wherein said protective covering includes surface features for providing gripping locations.

17. The CMM of claim 1 including a base attached to said second end of said arm and wherein:

said protective covering further surrounds said base.

18. The CMM of claim 17 wherein said base covering comprises a two-part clam shell.

19. The CMM of claim 18 wherein said base covering comprises a rigid polymeric material.

20. The CMM of claim 1 wherein said probe further includes said protective covering in the form of an outer sleeve.

21. The CMM of claim 20 wherein said outer sleeve is replaceable.

22. The CMM of claim 21 wherein said outer sleeve comprises a two-part clam shell.

23. The CMM of claim 20 wherein said outer sleeve comprises a rigid polymeric material.

24. The CMM of claim 1 wherein at least one of said long jointed arm segments comprises at least two long jointed arm segments.

25. The CMM of claim 1 wherein at least one of said long jointed arm segments comprises at least three long jointed arm segments.

26. The CMM of claim 1 wherein at least one of said long jointed arm segments comprises all of said long jointed arm segments.

27. A portable coordinate measurement machine (CMM) for measuring the position of an object in a selected volume, comprising:

a manually positionable articulated arm having opposed first and second ends, said arm including a plurality of jointed arm segments, each arm segment including at least one position transducer for producing a position signal;

a probe at said first end of said arm;

a base at said second end of said arm, said base comprising an integral and permanent portion of said CMM, said base including at least one mounting location for mounting a computer; and

an electronic circuit which receives the position signals from the transducers and provides a digital coordinate corresponding to the position of the probe in a selected volume.

28. The CMM of claim 27 wherein:

said mounting location comprises a boss.

29. The CMM of claim 27 including:

said mounting location includes a ball mount.

30. The CMM of claim 29 including:

an extension having a pair of opposed ends, said extension pivotably mounted at one end on said ball mount; and

a computer support mounted on the other end of said extension.

31. The CMM of claim 27 including a pair of opposed mounting locations on said base.

32. The CMM of claim 31 wherein each of said mounting locations comprise a boss.

33. The CMM of claim 31 including:

a ball mount on at least one of said mounting locations.

34. A portable coordinate measurement machine (CMM) for measuring the position of an object in a selected volume, comprising:

a manually positionable articulated arm having opposed first and second ends, said arm including a plurality of jointed arm segments, each arm segment including at least one position transducer for producing a position signal;

a measurement probe attached to a first end of said articulated arm;

an electronic circuit which receives the position signals from the transducers and provides a digital coordinate corresponding to the position of the probe in a selected volume;

a protective covering over at least a portion of said CMM, said protective covering comprising a molded, polymeric material for protection of said CMM from impact shocks; and

wherein at least one of said arm segments includes said protective covering in the form of an outer sleeve and wherein said outer sleeve has an outer tapered configuration.

35. The CMM of claim 34 wherein said outer sleeve is replaceable.

36. The CMM of claim 35 wherein said outer sleeve comprises a two-part clam shell.

37. The CMM of claim 36 wherein said clam shell is attached by at least one of threaded fasteners and spring clips.

38. The CMM of claim 34 wherein said outer sleeve comprises a rigid polymeric material.

39. The CMM of claim 34 wherein said outer sleeve includes at least one support post for resting against an adjacent arm segment and preventing the impact between adjacent arm segments.

40. The CMM of claim 34 wherein at least one of said long jointed arm segments comprises at least two long jointed arm segments.

41. The CMM of claim 34 wherein at least one of said long jointed arm segments comprises at least three long jointed arm segments.

42. The CMM of claim 34 wherein at least one of said long jointed arm segments comprises all of said long jointed arm segments.

43. A portable coordinate measurement machine (CMM) for measuring the position of an object in a selected volume, comprising:

a manually positionable articulated arm having opposed first and second ends, said arm including a plurality of jointed arm segments, each arm segment including at least one position transducer for producing a position signal;

a measurement probe attached to a first end of said articulated arm;

an electronic circuit which receives the position signals from the transducers and provides a digital coordinate corresponding to the position of the probe in a selected volume;

a protective covering over at least a portion of said CMM, said protective covering comprising a molded, polymeric material for protection of said CMM from impact shocks; and

wherein at least one of said arm segments includes said protective covering in the form of an outer sleeve and wherein said outer sleeve includes at least one support post for resting against an adjacent arm segment and preventing the impact between adjacent arm segments.

44. The CMM of claim 43 wherein said polymeric material comprises an elastomeric material.

45. The CMM of claim 43 wherein said polymeric material comprises a rigid plastic material.

46. The CMM of claim 43 wherein said outer sleeve comprises a two-part claim shell.

47. A portable coordinate measurement machine (CMM) for measuring the position of an object in a selected volume, comprising:

a manually positionable articulated arm having opposed first and second ends, said arm including a plurality of jointed arm segments, each arm segment including at least one position transducer for producing a position signal;

a measurement probe attached to a first end of said articulated arm;

a base attached to said second end of said arm, said base supporting said arm;

an electronic circuit which receives the position signals from the transducers and provides a digital coordinate corresponding to the position of the probe in a selected volume;

a protective covering over at least a portion of said CMM, said protective covering comprising a molded, polymeric material for protection of said CMM from impact shocks; and

wherein said protective covering is in the form of a housing surrounding said base.

48. The CMM of claim 47 wherein said housing comprises a two-part clam shell housing.

49. The CMM of claim 47 wherein said housing comprises a rigid polymeric material.

50. The CMM of claim 47 wherein said housing includes:

at least one storage area.