Multi-mode portable coordinate measuring machine

• US 10,036,627 B2
• Filed: 09/17/2015
• Issued: 07/31/2018
• Est. Priority Date: 09/19/2014
• Status: Active Grant

• Current Assignee: Hexagon Metrology Incorporated (Hexagon AB)
• Original Assignee: Hexagon Metrology Incorporated (Hexagon AB)
• Inventors: Ferrari, Paul, Jung, Hyun Kwon
• Primary Examiner(s): Bennett, G. Bradley
• Application Number:
  US14/857,503
• Publication Number:
  US 20160084633A1
• Time in Patent Office: 1,048 Days
• Field of Search: 33503
• CPC Class Codes: G01B 11/005 coordinate measuring machines
• CPC Class Codes: G01B 11/007 feeler heads therefor
• CPC Class Codes: G01B 21/04 by measuring coordinates of points
• CPC Class Codes: G01B 21/047 Accessories, e.g. for positioning, for tool-setting, for measuring probes
• CPC Class Codes: G01B 5/008 using coordinate measuring machines

Abstract

A multi-mode coordinate measuring machine system can be configured to measure coordinates in a variety of ways with a certain set of components. For example, an articulated arm coordinate measuring machine can measure coordinates on an object using a contact probe or a non-contact measuring device mounted on the articulated arm. Then, a user can remove the non-contact measuring device from the articulated arm coordinate measuring machine, and take additional measurements of the object that can be aligned with measurements taken by the articulated arm and devices attached thereto.

Claims

1. A coordinate measuring machine system comprising:

an articulated arm comprising a plurality of transfer members and a plurality of articulation members connecting at least two transfer members to each other, a base at a proximal end, and a mounting portion at a distal end;

a contact probe configured to be mounted to the mounting portion such that the articulated arm can measure a position contacted by the contact probe; and

one or more non-contact measuring devices configured to be mounted to the mounting portion such that the articulated arm can measure a plurality of positions simultaneously with the one or more non-contact measuring devices, wherein the one or more non-contact measuring devices are configured to be removed from the mounting portion and measure a plurality of positions simultaneously while not mounted to an articulated arm coordinate measuring machine,

wherein at least one of the one or more non-contact measuring devices is configured to provide immediate feedback to a user based on measurements of lower precision than the precision available from non-contact measuring device.

2. The coordinate measuring system of claim 1, wherein the articulated arm comprises a handle.

3. The coordinate measuring system of claim 1, further comprising a portable handle separate from the handle on the arm, the portable handle being configured to receive the one or more non-contact measuring devices while not mounted to the articulated arm coordinate measuring machine to form a single portable measuring unit.

4. The coordinate measuring system of claim 3, wherein the portable handle comprises electronics configured to provide a plurality of features to the one or more non-contact measuring devices.

5. The coordinate measuring machine system of claim 1, wherein the one or more non-contact measuring devices are configured to be removed from the mounting portion as a single portable measuring unit.

6. The coordinate measuring machine system of claim 5, wherein the portable measuring unit comprises a handle portion.

7. The coordinate measuring machine system of claim 1, further comprising a wearable pack configured to provide one or more of power, data transmission functionality, data storage, and electronic control to the one or more non-contact measuring devices while removed from the mounting portion.

8. The coordinate measuring machine system of claim 1, wherein one of the one or more non-contact measuring devices is a laser scanner.

9. The coordinate measuring machine system of claim 1, wherein one of the one or more non-contact measuring devices is an area scanner.

10. The coordinate measuring machine system of claim 9, wherein the area scanner comprises two or more cameras.

11. The coordinate measuring machine system of claim 9, wherein the area scanner comprises a projector configured to output a structured light pattern.

12. The coordinate measuring machine system of claim 1, wherein the one or more non-contact measuring devices comprises a laser scanner and an area scanner removable together as a single portable measuring unit.

13. The coordinate measuring machine system of claim 12, wherein the area scanner is configured to measure a position of the portable measuring unit and the laser scanner is configured to measure coordinates of an object.

14. The coordinate measuring machine system of claim 1, wherein the contact probe is removable from the mounting portion with the one or more non-contact measuring devices.

15. The coordinate measuring system of claim 1, wherein the non-contact measuring device skips pixels when processing images captured by the non-contact measuring device to determine measured coordinates.

16. The coordinate measuring system of claim 1, wherein the non-contact measuring device, at least when not mounted to an articulated arm coordinate measuring machine, forms single portable measuring unit comprising a display.

17. The coordinate measuring system of claim 16, wherein the display is configured to provide immediate feedback to a user of the single portable measuring unit, the feedback based at least on coordinates measured by the single portable measuring unit.

18. The coordinate measuring system of claim 16, wherein the display provides immediate feedback to the user indicating where measurements of an object have been made.

19. The coordinate measuring system of claim 1, further comprising a light source separated from the one or more non-contact measuring devices and attached to the non-contact measuring devices by a fiber optic cable such that a projector on the non-contact measuring device can output light from the separated light source.

20. The coordinate measuring system of claim 19, wherein the separated light source is provided on a feature pack.

33. The coordinate measuring system of claim 1, wherein the non-contact measuring device captures an image and the measurements of lower precision include a level of precision for borders of the image that is higher than a level of precision for a center of the image.

21. A method of measuring an object comprising:

measuring the object with a measuring device mounted on an articulated arm coordinate measuring machine;

removing the measuring device from the articulated arm coordinate measuring machine;

measuring the object with the measuring device while not mounted on the articulated arm coordinate measuring machine; and

providing immediate feedback, based on measured coordinates with less precision than the full precision available from the measuring device, to a user while measuring the object with the measuring device while not mounted on the articulated arm coordinate measuring machine.

22. The method of claim 21, wherein the step of measuring the object with the measuring device while not mounted on the articulated arm coordinate measuring machine is done after measuring the object with the measuring device mounted on the articulated arm coordinate measuring machine.

23. The method of claim 21, wherein the steps of measuring the object with the measuring device while mounted and not mounted on the articulated arm coordinate measuring machine are done without powering-off the measuring device.

24. The method of claim 21, further comprising the steps of:

remounting the measuring device to the articulated arm coordinate measuring machine; and

measuring the object with the measuring device while mounted on the articulated arm coordinate measuring machine, after measuring the object with the measuring device while not mounted on the articulated arm coordinate measuring machine.

25. The method of claim 21, wherein the measuring device is part of a portable measuring unit that can be mounted to and removed from the articulated arm coordinate measuring machine, the portable measuring unit comprising two or more measuring devices.

26. The method of claim 25, wherein the measuring device comprises a laser scanner and an area scanner.

27. The method of claim 26, further comprising the steps of:

measuring a position of the portable measuring unit while not mounted to the articulated arm coordinate measuring machine using measurements made by the area scanner; and

wherein the step of measuring the object while not mounted to the articulated arm coordinate measuring machine is done by the laser scanner.

28. The method of claim 26, further comprising synchronizing measurements taken by the laser scanner and the area scanner.

29. The method of claim 21, wherein the measuring device comprises an area scanner.

30. The method of claim 21, wherein the immediate feedback is based on measurements determined while skipping pixels in images captured by the measuring device.

31. The method of claim 21, further comprising attaching a portable handle separate from the articulated arm coordinate measuring machine to the measuring device after removing the measuring device from the articulated arm coordinate measuring machine, such that the handle is attached while measuring the object with the measuring device while not mounted on the articulated arm coordinate measuring machine.

32. The method of claim 31, further comprising functionality to the measuring device from the portable handle distinct from functionality available through the articulated arm coordinate measuring machine.

34. The method of claim 21, wherein the measuring device captures an image and the measured coordinates with less precision include a level of precision for borders of the image that is higher than a level of precision for a center of the image.