Portable coordinate measurement machine with improved handle assembly

• US 7,017,275 B2
• Filed: 01/07/2005
• Issued: 03/28/2006
• 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.
• Application Number:
  US11/031,398
• Publication Number:
  US 20050115092A1
• Time in Patent Office: 445 Days
• Field of Search: 335/03, D11/222, D11/223, 200/400, 200/401, 200/405, 200/406, 200/449, 200/450, 200/520, 200/521, 200/523, 200/275, 200/329, 200/335, 200/339
• 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 jointed arm segments. The arm includes a probe at one end thereof. The probe also includes improved switches and a measurement indicator light.

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 including at least one position transducer for producing a position signal;

a measurement probe attached to said first end of said articulated arm, said measurement probe having a housing, said housing having a longitudinal axis;

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

at least two switches on said housing of said measurement probe, said switches each having an arcuate shape, said arcuate shape including an arc oriented about said longitudinal axis of said housing.

2. The CMM of claim 1 wherein:

said switches have an oblong, arcuate shape.

3. The CMM of claim 1 wherein:

said switches extend around a major portion of said housing of said measurement probe.

4. The CMM of claim 1 including:

two pairs of arcuate shaped switches.

5. The CMM of claim 4 wherein each pair of switches is positioned on opposed sides of said housing.

6. The CMM of claim 4 wherein a first pair of said switches comprise “

take”

switches and a second pair of said switches comprise “

confirm”

switches.

7. The CMM of claim 4 wherein:

at least one of said switches has a float to facilitate actuation of said switch.

8. The CMM of claim 4 wherein:

each of said switches has a float to facilitate actuation of switches.

9. The CMM of claim 1 wherein said at least two switches include a “

take” and

“

confirm”

switch.

10. The CMM of claim 1 wherein said at least two switches are oriented in a direction which is traverse to said longitudinal axis of said housing.

11. The CMM of claim 1 wherein:

at least one of said switches has a float to facilitate actuation of said switch.

12. The CMM of claim 1 wherein:

each of said switches has a float to facilitate actuation of switches.

13. The CMM of claim 1 wherein:

said at least two switches on said housing of said measurement probe are differentiated so as to minimize confusion during actuation thereof.

14. The CMM of claim 13 wherein said differentiation is selected from the group of differing heights, differing surface textures and differing colors.

15. The CMM of claim 13 wherein said at least two switches include a “

take” and

“

confirm”

switch.

16. The CMM of claim 13 including at least one indicating light on said housing of said measurement probe for indicating proper measurement.

17. The CMM of claim 16 wherein said indicating light includes a plurality of colors.

18. The CMM of claim 17 wherein said indicating light comprises an LED.

19. The CMM of claim 16 wherein said indicating light comprises an LED.

20. 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 including at least one position transducer for producing a position signal;

a measurement probe attached to said first end of said articulated arm, said measurement probe having a housing, said housing having a circumference;

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

at least two switches on said housing of said measurement probe, said switches each having an arcuate shape, said arcuate shape including an arc oriented along said circumference of said housing.

21. The CMM of claim 20 wherein:

said switches have an oblong, arcuate shape.

22. The CMM of claim 20 wherein:

said switches extend around a major portion of said housing of said measurement probe.

23. The CMM of claim 20 including:

two pairs of arcuate shaped switches.

24. The CMM of claim 23 wherein each pair of switches is positioned on opposed sides of said housing.

25. The CMM of claim 23 wherein a first pair of said switches comprise “

take”

switches and a second pair of said switches comprise “

confirm”

switches.

26. The CMM of claim 23 wherein:

at least one of said switches has a float to facilitate actuation of said switch.

27. The CMM of claim 23 wherein:

each of said switches has a float to facilitate actuation of said switches.

28. The CMM of claim 20 wherein said at least two switches include a “

take” and

“

confirm”

switch.

29. The CMM of claim 20 wherein:

at least one of said switches has a float to facilitate actuation of said switch.

30. The CMM of claim 20 wherein:

each of said switches has a float to facilitate actuation of said switches.

31. 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 including at least one position transducer for producing a position signal;

a measurement probe attached to said first end of said articulated arm, said measurement probe having a housing, said housing having a longitudinal axis;

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

at least one switch on said housing of said measurement probe, said switch having an arcuate shape, said arcuate shape including an arc oriented about said longitudinal axis of said housing.

32. The CMM of claim 31 including:

at least one indicating light on said housing of said measurement probe for indicating proper measurement.

33. The CMM of claim 32 wherein said indicating light includes a plurality of colors.

34. The CMM of claim 33 wherein said indicating light comprises an LED.

35. The CMM of claim 32 wherein said indicating light comprises an LED.

36. The CMM of claim 31 wherein:

said switch has an oblong, arcuate shape.

37. The CMM of claim 31 wherein:

said switch extends around a major portion of said housing of said measurement probe.

38. The CMM of claim 31 wherein:

said switch has a float to facilitate actuation of said switch.

39. 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 including at least one position transducer for producing a position signal;

a measurement probe attached to said first end of said articulated arm, said measurement probe having a housing, said housing having a circumference;

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

at least one switch on said housing of said measurement probe, said switch having an arcuate shape, said arcuate shape including an arc oriented along said circumference of said housing.

40. The CMM of claim 39 wherein:

said switch has an oblong, arcuate shape.

41. The CMM of claim 39 wherein:

said switch extends around a major portion of said housing of said measurement probe.

42. The CMM of claim 39 wherein:

said switch has a float to facilitate actuation of said switch.