CMM with flaw detection system

• US 9,250,214 B2
• Filed: 03/12/2013
• Issued: 02/02/2016
• Est. Priority Date: 03/12/2013
• Status: Active Grant

• Current Assignee: Hexagon Metrology Incorporated (Hexagon AB)
• Original Assignee: Hexagon Metrology Incorporated (Hexagon AB)
• Inventors: Ferrari, Paul, Jung, Hyun Kwon, Tait, Hogar
• Primary Examiner(s): SAINT SURIN, JACQUES M
• Application Number:
  US13/797,537
• Publication Number:
  US 20140260627A1
• Time in Patent Office: 1,057 Days
• Field of Search: 736/18
• US Class Current: 1/1
• CPC Class Codes: G01B 17/00 Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
• CPC Class Codes: G01B 21/04 by measuring coordinates of points
• CPC Class Codes: G01B 21/042 Calibration or calibration artifacts G01B3/30, G01B9/02072 take precedence
• CPC Class Codes: G01N 29/043 in the interior, e.g. by shear waves
• CPC Class Codes: G01N 29/225 Supports, positioning or alignment in moving situation
• CPC Class Codes: G01N 29/265 by moving the sensor relative to a stationary material

Abstract

A flaw detection system includes a CMM having a base and one or more transfer members, one or more articulation members connecting the one or more transfer members to the base, and a flaw detection sensor at a distal end, the CMM being configured to measure a location of the flaw detection sensor, and a processor configured to correlate the location of the flaw detection sensor as measured by the CMM with data detected by the flaw detection sensor.

Claims

1. A flaw detection system comprising:

a coordinate measuring machine having a base and one or more transfer members, one or more articulation members connecting the one or more transfer members to the base, and a flaw detection sensor at a distal end of the coordinate measuring machine, the coordinate measuring machine being configured to measure a location of the flaw detection sensor;

an electronics module at the distal end of the coordinate measuring machine and configured to generate digitized signals based at least on the ultrasound signal from the flaw detection sensor;

internal cables within the coordinate measuring machine extending from the distal end to the base, the internal cables configured to transmit digitized signals from the flaw detection sensor; and

a processor configured to correlate the location of the flaw detection sensor as measured by the coordinate measuring machine with data detected by the flaw detection sensor.

2. The system of claim 1, wherein the processor is integrated with the coordinate measuring machine.

3. The system of claim 1, wherein the processor is integrated with a computer external to the coordinate measuring machine.

4. The system of claim 1, wherein the flaw detection sensor is an ultrasonic flaw detection sensor.

5. The system of claim 1, wherein the flaw detection sensor includes an ultrasonic pulser and receiver.

6. The system of claim 1, wherein flaw detection system is configured to display the results of the CMM and the flaw detection sensor simultaneously.

7. The system of claim 1, wherein flaw detection system is configured to overlay data from the flaw detection sensor with position data from the coordinate measuring machine.

8. The system of claim 1, wherein flaw detection system is configured to display results from the flaw detection sensor as a three dimensional color map.

9. The system of claim 1 further comprising a modular feature pack connected to the coordinate measurement machine and including the electronics module.

10. The system of claim 9, wherein the feature pack forms part of a handle attached at the distal end of the coordinate measuring machine.

11. A method of sensing flaw in an object comprising:

positioning a flaw sensor positioned on a coordinate measuring machine against an object;

sensing a characteristic of the object with the flaw sensor;

generating a digital signal at the flaw sensor based on the sensed characteristic;

measuring the position of the flaw sensor with the coordinate measuring machine; and

correlating the position of the flaw sensor with the sensed characteristic of the object.

12. The method of claim 11, further comprising moving the flaw sensor to a second point, sensing a characteristic of the object with the flaw sensor at the second point, measuring the position of the flaw sensor with the coordinate measuring machine and correlating the position of the flaw sensor at the second point with the sensed characteristic of the object at the second point.

13. A method of sensing flaw in an object comprising:

positioning a flaw sensor positioned on a coordinate measuring machine against the object at a plurality of positions;

sensing a characteristic of the object with the flaw sensor at each of the plurality of positions;

generating a digital signal at the flaw sensor based on the sensed characteristic;

measuring the position of the flaw sensor with the coordinate measuring machine at the plurality of positions where characteristic of the flaw sensor is being sensed; and

correlating the positions of the flaw sensor with the sensed characteristics at the plurality of positions.

14. The method of claim 13, further comprising generating a three dimensional map of the characteristic sensed by the flaw sensor.

15. The method of claim 13, further comprising overlaying the measured positions of the flaw sensors with the characteristic detected by the flaw sensor.

16. A method of measuring data with a coordinate measuring machine comprising:

moving a probe positioned at a distal end of the coordinate measuring machine to a first probe position;

measuring a surface position on an object with a probe;

measuring a flaw point below the surface position with the coordinate measuring machine; and

generating a digital signal indicative of the flaw point at the distal end of the coordinate measuring machine.

17. A method of measuring data with a coordinate measuring machine comprising:

moving a probe positioned at a distal end of the coordinate measuring machine to a plurality of surface positions on an object;

measuring the plurality of surface positions;

measuring a flaw point below each of the plurality of surface positions with the coordinate measuring machine; and

generating a digital signal indicative of the flaw point at the distal end of the coordinate measuring machine.

18. The method of claim 17, further comprising correlating the flaw point with the plurality of surface positions.

19. A method of measuring data with a coordinate measuring machine comprising:

moving a probe positioned at a distal end of the coordinate measuring machine to a plurality of surface positions on an object;

measuring the plurality of surface positions; and

measuring a flaw start point, a flaw end point and a rear surface of the object below each of the surface positions with the probe of the coordinate measuring machine at the first probe position; and

generating a digital signal indicative of the flaw start point, flaw end point, and a rear surface of the object at the distal end of the coordinate measuring machine.

20. The method of claim 19, further comprising correlating the flaw start point, a flaw end point and a rear surface with the surface positions measured by the coordinate measuring machine.

21. A method of measuring data with a coordinate measuring machine comprising:

moving a non contact laser scanner at a distal end of the coordinate measuring machine to a first probe position;

measuring a surface position on an object with a laser scanner;

measuring a flaw point below the surface position with the coordinate measuring machine; and

generating a digital signal indicative of the flaw point at the distal end of the coordinate measuring machine.

22. The method of claim 21 further comprising switching between laser scanning of the surface and flaw detection of the subsurface during measurement.