Coordinate measurement machine with vibration detection
An articulated arm system can include an articulated measuring arm with a plurality of interconnected support arm segments. The arm segments can be moveable about a plurality of axes. A plurality of rotational angle sensors can mount on the arm and be configured to measure rotational position between the support arm segments. Additionally, a vibration detection device can attach to the arm near an end of the arm. The vibration detection device can be operatively connected to the sensors such that the sensors output a rotational position upon detection of a new vibration exceeding a threshold amplitude.
1. A coordinate measuring machine system comprising:
an coordinate measuring machine comprising a plurality of interconnected support segments moveable relative to each other;
a plurality of sensors mounted on the coordinate measuring machine configured to measure position between the support segments; and
a vibration detection device attached to the coordinate measuring machine near an end of the coordinate measuring machine, the vibration detection device being operatively connected to the sensors such that a position output by the sensors is recorded upon detection of a new vibration.
2. The system of claim 1 , wherein the sensors continuously output a rotational position.
3. The system of claim 1 , wherein the position output is recorded on a separate processor operatively connected to the coordinate measuring machine.
4. The system of claim 1 , further comprising a coordinate acquisition member at an end of the coordinate measuring machine.
5. The system of claim 4 , wherein the vibration detection device is disposed on the coordinate acquisition member.
6. The system of claim 4 , wherein the coordinate acquisition member comprises a hard probe.
7. The system of claim 6 , wherein the coordinate acquisition member further comprises a device for detecting position and/or contact distinct from the vibration detection device.
8. The system of claim 1 , wherein at least one of the sensors is an optical encoder.
9. The system of claim 1 , wherein the vibration detection device is disposed on the coordinate measuring machine.
10. The system of claim 4 , wherein the coordinate acquisition member is removable from the coordinate measuring machine.
11. The system of claim 4 , wherein the vibration detection device is disposed within the coordinate acquisition member.
12. The system of claim 6 , wherein the vibration detection device is disposed within the hard probe.
13. The system of claim 4 , wherein the vibration detection device is rigidly attached to the coordinate acquisition member.
14. The system of claim 1 , wherein the vibration detection device is an accelerometer.
15. The system of claim 6 , wherein the coordinate acquisition member comprises a probe tip and the vibration detection devices is disposed within the probe tip.
16. A method of operating a coordinate measuring machine system comprising:
contacting an item to be measured with a coordinate measuring machine comprising a plurality of interconnected support segments moveable relative to each other;
sensing a new vibration at an end of the coordinate measuring machine upon contact with the item;
generating a triggering signal in response to the new vibration; and
automatically recording a position of the end of the coordinate measuring machine corresponding to the triggering signal.
17. The method of claim 16 , further comprising continuously measuring a position of the end of the coordinate measuring machine.
18. The method of claim 16 , wherein the triggering signal indicates contact with the item.
19. The method of claim 16 , further comprising the step of storing the measured position.
20. The method of claim 16 , wherein the step of recording further comprises storing the measured position.
21. The method of claim 16 , wherein the step of automatically recording is performed with an electronic encoder.
22. The method of claim 16 , further comprising the step of determining whether a sensed new vibration indicates contact with the item.
23. The method of claim 22 , wherein the step of determining further comprises checking for a threshold amplitude.
24. The method of claim 22 , wherein the step of determining further comprises checking for a minimum duration of an acceleration.
25. The method of claim 22 , wherein the step of determining further comprises checking for a maximum duration of an acceleration.
26. The method of claim 22 , wherein the step of determining further comprises ignoring vibrations during periods of substantially continued high vibrations.
27. The method of claim 22 , wherein the step of determining further comprises checking for passage of a cooldown duration.
28. A probe configured for use with a coordinate measurement machine comprising:
a probe tip;
a probe neck connecting the probe tip to a probe body;
a mounting portion configured to mount the probe body to a coordinate measuring machine, the mounting portion comprising a connect device; and
a vibration detection device disposed on at least one of the probe tip, probe neck, and the mounting portion.
29. The probe of claim 28 , wherein the vibration detection device is configured to output a trigger signal upon detection of a new vibration exceeding a threshold amplitude.
30. The probe of claim 28 , further comprising a device for detecting position and/or contact distinct from the vibration detection device.
31. The probe of claim 28 , wherein the probe tip is a hard probe tip.