Method for Validating a Workpiece Measurement in a Dimensional Metrology Hand Tool

摘要

A method for validating a workpiece measurement in a hand-held spatial dimension measurement metrology tool comprises vibrating a portion of the metrology hand tool using the vibration excitation element; sensing a vibration signature using the vibration sensor configuration; identifying a valid contact state between the metrology hand tool and the workpiece based on a vibration signature criterion; identifying a valid seating state based on a measurement stability criterion applied to a set of dimensional measurements of the metrology hand tool; and indicating that a dimensional measurement is valid for a dimensional measurement that is obtained when the valid contact state and the valid seating state occur simultaneously.

主权项

1. A method for validating a workpiece measurement in a contact-type dimensional metrology hand tool, the method comprising:
providing a contact-type dimensional metrology hand tool comprising a first workpiece contact surface included on a first member and a second workpiece contact surface included on a second member that moves relative to the first member, a dimensional measurement sensor for measuring a separation between the first and second contact surfaces, a vibration excitation element, a vibration sensor configuration, and a signal processor; vibrating a portion of the metrology hand tool using the vibration excitation element; sensing a vibration signature using the vibration sensor configuration; identifying a valid contact state between the metrology hand tool and the workpiece based on a vibration signature criterion applied to the vibration signature; identifying a valid seating state based on a measurement stability criterion applied to a set of dimensional measurements of the metrology hand tool; and indicating that a dimensional measurement is valid for a dimensional measurement that is obtained when the valid contact state and the valid seating state occur simultaneously.