COORDINATE MEASUREMENT MACHINES WITH REMOVABLE ACCESSORIES

• US 20110173827A1
• Filed: 01/14/2011
• Published: 07/21/2011
• Est. Priority Date: 01/20/2010
• Status: Active Grant

• Current Assignee: Faro Technologies Incorporated
• Original Assignee: Faro Technologies Incorporated
• Inventors: Briggs, Clark H., Bailey, Brent, Atwell, Paul C., Barber, Marc M.
• Granted Patent: US 8,533,967 B2
• Time in Patent Office: Days
• US Class Current: 33/503
• CPC Class Codes: G01B 21/047 Accessories, e.g. for positioning, for tool-setting, for measuring probes
• CPC Class Codes: G01B 2210/58 Wireless transmission of information between a sensor or probe and a control or evaluation unit
• CPC Class Codes: G01B 5/008 using coordinate measuring machines
• CPC Class Codes: G01B 5/012 Contact-making feeler heads therefor
• CPC Class Codes: G05B 19/401 characterised by control arrangements for measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes G05B19/19 takes precedence
• CPC Class Codes: G05B 2219/31048 Project on workpiece, image of finished workpiece, info or a spot
• CPC Class Codes: G05B 2219/33162 Two bus, high speed and low speed bus, linked or not
• CPC Class Codes: G05B 2219/37193 Multicoordinate measuring system, machine, cmm
• CPC Class Codes: G05B 2219/40233 Portable robot
• CPC Class Codes: G05B 2219/45061 Measuring robot
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

A portable articulated arm coordinate measuring machine is provided. The coordinate measuring machine includes a base with an arm portion. A probe end is coupled to an end of the arm portion distal from the base. The probe end has a fastener and a first connector. A device is removably coupled to the probe end by the fastener, the accessory having a second connector arranged to engage the first connector when the fastener couples the device to the probe end.

Claims

1. A portable articulated arm coordinate measuring machine (AACMM) for measuring the coordinates of an object in space, comprising:

a base;

a manually positionable arm portion having an opposed first end and second end, the arm portion being rotationally coupled to the base, the arm portion including a plurality of connected arm segments, each arm segment including at least one position transducer for producing a position signal;

a measurement device coupled to the first end;

an electronic circuit which receives the position signal from the at least one position transducer and provides data corresponding to a position of the measurement device;

a probe end disposed between the measurement device and the first end, the probe end having a fastener and a first connector; and

a device removably coupled to the probe end by the fastener, the device having a second connector arranged to engage the first connector when the fastener couples the device to the probe end.

2. The AACMM of claim 1 wherein:

the probe end includes a first actuator and a second actuator coupled to a first controller; and

the device includes a third actuator and a fourth actuator electrically coupled to a second controller.

3. The AACMM of claim 2 wherein the device includes a handle portion.

4. The AACMM of claim 3 wherein the device includes a planar portion disposed at an end of the handle portion and adjacent the fastener, the planar portion being positioned offset from the fastener to define a gap.

5. The AACMM of claim 4 wherein the fastener is a collar coaxially disposed on the probe end.

6. The AACMM of claim 5 wherein the device includes a camera.

7. The AACMM of claim 6 wherein the device includes an optical device disposed adjacent to the camera.

8. The AACMM of claim 1 wherein the device includes a feature selected from a group consisting of:

bar code scanner, thermal scanner, video camera, light source, image projector, a microphone, an audio recording system and a paint spray nozzle.

9. The AACMM of claim 1 wherein:

the probe end is rotationally coupled about an axis to the first end; and

the device is disposed to rotate about the axis.

10. The AACMM of claim 1 wherein:

first connector includes an electrical connector portion; and

the second connector includes an electrical connector portion.

11. A portable articulated arm coordinate measuring machine (AACMM) for measuring the coordinates of an object in space, comprising:

a manually positionable arm portion having an opposed first end and second end, the arm portion including a plurality of connected arm segments, each arm segment including at least one position transducer for producing a position signal;

a measurement device coupled to the first end;

an electronic circuit which receives the position signal from the at least one position transducer and provides data corresponding to a position of the measurement device;

a housing disposed between the first end and the measurement device;

a first controller disposed within the housing;

a first coupler arranged on one side of the housing; and

a device removably coupled to the housing and having a handle portion, the device having a second coupler on one end arranged to engage the first coupler, thereby securing the device to the housing.

12. The AACMM of claim 11 further comprising:

a first connector adjacent the first coupler and electrically coupled to the first controller;

a second connector coupled to the device and electrically coupled to the first connector; and

a second controller disposed within the device and electrically coupled to the first controller via the first connector and the second connector, wherein the second controller is at least partially disposed within the handle portion.

13. The AACMM of claim 12 wherein the device further comprises a first actuator operably coupled to the second controller, the first actuator disposed on the handle portion.

14. The AACMM of claim 13 wherein the device further comprises a second actuator operably coupled to the second controller, the second actuator disposed on the handle portion adjacent the first actuator.

15. The AACMM of claim 11 wherein:

the second coupler includes a first projection extending from the device adjacent the second connector, the first projection having an angled first surface on one side; and

the first coupler is a fastener movably coupled to the housing adjacent the first connector opposite the first projection, wherein the fastener is movable between a first position and a second position to engage the first surface.

16. The AACMM of claim 15 wherein the second coupler further includes a second projection extending adjacent the second connector, the second projection having a lip portion sized to be received in a slot.

17. The AACMM of claim 16 wherein the device includes:

a second surface disposed between the first projection and the second projection; and

a third surface adjacent to and offset a predetermined distance from the second surface and arranged to define a gap between the third surface and the fastener.

18. The AACMM of claim 17 wherein the housing includes a first thread portion and the fastener includes a second thread portion, wherein the fastener is moved from the first position to the second position when the second thread portion is rotated relative to the first thread portion.

19. The AACMM of claim 11 wherein the device includes a camera disposed on a side adjacent the measurement device, the camera being electrically coupled to the second controller.

20. The AACMM of claim 19 wherein the camera is a video camera.

21. The AACMM of claim 19 wherein the device further includes a laser disposed adjacent the camera, the laser being electrically coupled to the second controller.

22. The AACMM of claim 11 wherein the device includes at least one paint spray nozzle.

23. The AACMM of claim 11 wherein the device includes a bar code scanner.

24. The AACMM of claim 11 wherein the device includes a thermal scanner.

25. The AACMM of claim 11 wherein the device includes an image projector.

26. The AACMM of claim 11 wherein the device includes a light source.

27. A method of operating a portable articulated arm coordinate measuring machine for measuring the coordinates of an object in space, comprising:

providing a manually positionable arm portion having an opposed first end and second end, the arm portion including a plurality of connected arm segments, each arm segment including at least one position transducer for producing a position signal;

providing a probe end for measuring the object, the probe end having a first controller, the probe end having a first electrical connector electrically coupled to the first controller and a fastener, the probe end being coupled to the first end;

providing a measurement device operably coupled to probe end;

receiving at an electronic circuit the position signals from the transducers;

determining data corresponding to a position of the measurement device with the electronic circuit;

providing a device having a second controller, the device having a second electrical connector electrically coupled to the second controller and a coupler;

mechanically coupling the device to the probe end with the coupler and the fastener;

electrically coupling the first electrical connector to the second electrical connector; and

transmitting a first signal from the second controller to the first controller.

28. The method of claim 27 further comprising:

performing a first function with the first controller when the device is coupled to the probe end; and

performing a second function with the first controller in response to the first signal.

29. The method of claim 28 further comprising transmitting a second signal from the first controller to the second controller.

30. The method of claim 29 further comprising:

providing a base coupled to the second end; and

providing a third controller disposed in the base, the third controller being in bidirectional communication with the first controller and the second controller.

31. The method of claim 30 further comprising transmitting a third signal from the second controller to the third controller.

32. The method of claim 31 wherein the third signal is selected from a group consisting of:

an image signal;

a video image signal, a laser line probe signal, a temperature signal, and a bar code signal.

33. The method of claim 30 further comprising transmitting a fourth signal from the third controller to the second controller.

34. The method of claim 33 wherein the fourth signal is selected from a group consisting of:

light source signal, a projected image signal, and a paint color.

35. The method of claim 30 wherein the third controller communicates with the second controller includes a wireless communications connection.

36. The method of claim 34 wherein the fourth signal is transmitted via a wireless communications connection.

37. A portable articulated arm coordinate measuring machine (AACMM) for measuring the coordinates of an object in space, comprising:

a base;

a manually positionable arm portion having an opposed first end and second end, the arm portion being rotationally coupled to the base, the arm portion including a plurality of connected arm segments, each arm segment including at least one position transducer for producing a position signal;

a probe end coupled to the first end;

an electronic circuit which receives the position signal from the at least one position transducer and provides data corresponding to a position of the probe end; and

a first projector is removably coupled to the probe end, the first projector being operable to project a first information onto a first projection surface, the projected first information being indicative of a presence and location of one or more features associated with the first projection surface.

38. The AACMM of claim 37 wherein the one or more features includes an object located out of a line of sight behind the projection surface, the projected information being determined at least in part by the determined position of the probe end.

39. The AACMM of claim 37 wherein the projection of the first information includes an indicator highlighting a feature on the first projection surface.

40. The AACMM of claim 39 wherein the projection of the first information includes textual instructions.

41. The AACMM of claim 39 wherein the projection of the first information includes a textual indicator of a measurement.

42. The AACMM of claim 39 wherein the projection of the first information includes an indicator of a tolerance.

43. The AACMM of claim 39 wherein the projection of the first information includes a measurement indicator.

44. The AACMM of claim 38 further comprising a second projector mounted to the AACMM adjacent the probe end, the second projector being operable to project a second information onto the first projection surface.

45. The AACMM of claim 38 further comprising a third projector operably coupled to the AACMM, the third projector being operable to project a third information onto a second projection surface.

46. The AACMM of claim 44 wherein the third information is the same as the first information.

48. The removable accessory for an AACMM of claim 46 further comprising a second electrical connector removably connected to the first electrical connector.

50. The removable accessory for an AACMM of claim 48 further comprising a sensor electrically coupled to the controller.

52. The removable accessory for an AACMM of claim 50 further comprising an optical device disposed adjacent to the camera.

54. The removable accessory for an AACMM of claim 48 further comprising a paint spray nozzle operably coupled to the controller.

47. A removable accessory for portable articulated arm coordinate measuring machine (AACMM) for measuring the coordinates of an object in space, the AACMM having a probe end coupled to an end of the AACMM, the probe end having a first mechanical coupler and a first electrical connector, the removable accessory comprising:

a second mechanical coupler removably coupled to the first mechanical coupler;

a handle portion coupled to the second mechanical coupler.

49. The removable accessory for an AACMM of claim 47 further comprising a controller electrically coupled to the second electrical connector.

51. The removable accessory for an AACMM of claim 49 wherein the sensor is a camera.

53. The removable accessory for an AACMM of claim 49 wherein the sensor is selected from a group consisting of:

bar code scanner, thermal scanner, video camera, light source, image projector, a microphone, and an audio recording system.