Apparatus and method of controlling CMM using environmental information or CMM information

• US 10,598,476 B2
• Filed: 05/12/2016
• Issued: 03/24/2020
• Est. Priority Date: 05/12/2015
• Status: Active Grant

• Current Assignee: Hexagon Metrology Incorporated (Hexagon AB)
• Original Assignee: Hexagon Metrology Incorporated (Hexagon AB)
• Inventors: Witkos, Paul, Pease, Bruce, Cobb, Zachary, Kocic, Milan
• Primary Examiner(s): Guadalupe-McCall, Yaritza
• Application Number:
  US15/153,250
• Publication Number:
  US 20160334201A1
• Time in Patent Office: 1,412 Days
• Field of Search: 33503
• CPC Class Codes: G01B 21/045 Correction of measurements G01B9/02055 takes precedence
• CPC Class Codes: G01B 5/0014 due to temperature on machine tools B23Q11/0003
• CPC Class Codes: G01B 5/008 using coordinate measuring machines
• 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 19/404 characterised by control arrangements for compensation, e.g. for backlash, overshoot, tool offset, tool wear, temperature, machine construction errors, load, inertia G05B19/19, G05B19/41 take precedence
• CPC Class Codes: G05B 2219/37193 Multicoordinate measuring system, machine, cmm

Abstract

A method of measuring an object uses a coordinate measuring machine, which is positioned within an environment (e.g., a clean room). The method receives sensing information relating to the coordinate measuring machine, the environment, or both the coordinate measuring machine and the environment. Next, the method controls the coordinate measuring machine to perform, based on the sensing information, a specified mechanical action.

Claims

1. A method of measuring an object using a coordinate measuring machine, the coordinate measuring machine being in an environment, and wherein the object has a size tolerance and the coordinate measuring machine has a precision, the method comprising:

providing a coordinate measuring machine comprising;

at least one sensor configured to detect sensing information relating to the environment; and

a controller operatively coupled with the at least one sensor, the controller configured to control the coordinate measuring machine to perform, based on the sensing information, the size tolerance of the object and the precision of the coordinate measuring machine, a specified action;

receiving, by the controller from the at least one sensor, sensing information relating to the environment; and

controlling, by the controller, the coordinate measuring machine to perform, based on the sensing information, and as a function of the size tolerance of the object and the precision of the coordinate measuring machine, a specified action.

2. The method as defined by claim 1 wherein controlling the coordinate measuring machine comprises controlling the coordinate measuring machine to measure the object a second time.

3. The method as defined by claim 1 wherein the specified action is a mechanical action.

4. The method as defined by claim 1 further comprising measuring the object using the coordinate measuring machine.

5. The method as defined by claim 1 wherein the coordinate measuring machine includes a light sensor.

6. The method as defined by claim 1 wherein the coordinate measuring machine includes a light sensor, and receiving sensing information relating to the environment comprises measuring, with the light sensor, the quantity of light in the environment.

7. The method as defined by claim 1 wherein the coordinate measuring machine includes a light sensor, and receiving sensing information relating to the environment comprises measuring, with the light sensor, a spectrum of the light in the environment.

8. The method as defined by claim 1 wherein controlling the coordinate measuring machine comprises causing an alert to be generated.

9. The method as defined by claim 1 further comprising:

measuring the object using the coordinate measuring machine to produce a measurement;

determining an error amount based on the received sensing information; and

applying the error amount to the measurement to determine an adjusted measurement.

10. The method as defined by claim 1 wherein the sensing information relates to light in the environment.

11. The method as defined by claim 1 wherein the specified action is a mechanical action, and the received sensing information comprises a temperature of the object at the time of execution of the specified mechanical action.

12. The method as defined by claim 1 wherein the specified action is a mechanical action, and the received sensing information comprises a temperature of air in the vicinity of the object at the time of execution of the specified mechanical action.

13. A coordinate measuring machine for measuring an object in an environment, which object has a size tolerance, the coordinate measuring machine having a precision and comprising:

a base configured to support the object;

a measuring apparatus configured to measure the object;

at least one sensor configured to detect sensing information relating to the environment; and

a controller operatively coupled with the at least one sensor, the controller configured to control the coordinate measuring machine to perform, based on the sensing information, the size tolerance of the object and the precision of the coordinate measuring machine, a specified action.

14. The coordinate measuring machine as defined by claim 13 wherein the controller is configured to control the coordinate measuring machine to measure the object a second time.

15. The coordinate measuring machine as defined by claim 13 wherein the at least one sensor includes a light sensor configured to measure the quantity of light in the environment.

16. The coordinate measuring machine as defined by claim 13 wherein the specified action is a mechanical action.

17. A method of measuring an object using a coordinate measuring machine, the coordinate measuring machine being in an environment, and wherein the object has a size tolerance and the coordinate measuring machine has a precision, the method comprising:

providing a coordinate measuring machine comprising;

at least one sensor configured to detect sensing information relating to the environment; and

a controller operatively coupled with the at least one sensor, the controller configured to control the coordinate measuring machine to perform, based on the sensing information, the size tolerance of the object and the precision of the coordinate measuring machine, a specified action;

measuring the object using the coordinate measuring machine to produce measured data;

receiving, at least one sensor, sensing information relating to the environment;

selectively producing an alarm as a function of the sensing information and the measured data; and

producing, using the controller, and as a function of at least one of the size tolerance and the precision, an action in response to the alarm when the alarm is produced.

18. The method as defined by claim 17 wherein the sensing information relates to light in the environment.

19. The method as defined by claim 18 wherein the information relating to light in the environment comprises information indicating the spectrum of light in the environment.

20. The method as defined by claim 17 wherein the action is a mechanical action.