Interposer tool for shaft measurement
AssigneeQuality Vision International, Inc.
InventorsBrian Deane, Edward T. Polidor, Will Smith
Life of this patent
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Abstract
An apparatus for an optical based measurement machine for measuring a surface of a workpiece fixed to a rotational axis for rotation about the rotational axis, the apparatus comprising a probe configured for movement traverse to the rotational axis, the probe further configured to contact the surface of the workpiece in rotation about the rotational axis, an optical system imaging an illuminated profile of the probe, wherein the illuminated profile of the probe varies along the direction of the rotational axis.
Claims26
An apparatus for an optical based measurement machine for measuring a surface of a workpiece fixed to a rotational axis for rotation about the rotational axis, the apparatus comprising:
- a probe configured for movement traverse to the rotational axis, the probe further configured to contact the surface of the workpiece in rotation about the rotational axis;
- and
- an optical system imaging an illuminated profile of the probe, wherein the illuminated profile of the probe varies along the direction of the rotational axis.
An apparatus for an optical based measurement machine for measuring a first surface of a workpiece fixed to a rotational axis, the apparatus comprising:
- an arm;
- a first probe connected to the arm, wherein the first probe includes a detection zone, and, a contact surface point for directly contacting the first surface of a workpiece;
- and
- an optical sensor configured to image at least a portion of the detection zone of the first probe to detect a displacement of the first probe along the direction of the rotational axis as the contact surface point of the first probe maintains contact with the first surface of the workpiece when the workpiece is rotated about a rotational axis.
An optical system for measuring a surface of a workpiece, the system comprising:
- an optical measuring instrument having a rotary system for rotating a workpiece about a rotational axis, a lighting system for illuminating the workpiece, a measurement system for measuring surfaces of the workpiece, a computer, and a device for contacting a first surface of the workpiece, the device having a first probe having a detection zone and a contact surface point for directly contacting the first surface of the workpiece, wherein the measurement system includes an optical sensor configured to image at least a portion of the detection zone to determine a displacement of the first probe as the contact surface point maintains contact with the first surface of the workpiece when the workpiece is rotated about a rotational axis.
A method of measuring a surface of a workpiece fixed to a rotational axis of an optical based measurement machine, the method comprising:
- rotating a workpiece about a rotational axis of an optical based measurement machine;
- contacting a first probe with a first surface of the workpiece that is substantially parallel to an object plane of an optical based measurement machine;
- sensing, by an optical sensor, a change in a dimensional profile of the first probe in an illumination field;
- and
- determining a total surface variance of the workpiece based on the dimensional position change of the first probe.
Dependencies are inferred from the claim text.