SYSTEM AND METHOD FOR MECHANICAL RUNOUT MEASUREMENT

摘要

A method of measuring mechanical runout including: mounting a work piece on a rotatable mount, wherein the mount is configured to rotate the work piece; placing a displacement sensor at a known position adjacent a surface of the work piece, the displacement sensor being configured to measure a radial dimension of the work piece; attaching a removable angle indicator to the surface of the work piece; rotating the work piece while mounted on the mount and collecting rotational data of the rotational position of the work piece during the rotation; collecting displacement data from the displacement sensor as the work piece rotates, wherein the displacement data indicates a radial distance from a rotational axis of the work piece to the surface of the work piece at points on the surface as the surface rotates with respect to the displacement sensor; analyzing the displacement data to detect data representing the angle indicator on the surface of the work piece; correlating the displacement data with the rotational data, and determining displacements of points on the surface of the work piece based on the correlated displacement data.

主权项

1. A mechanical runout measurement system comprising:
a rotatable mount for a work piece, wherein the mount is configured to rotate the work piece; a displacement sensor proximate to a surface of the work piece, at a known position relative to the mount, and configured to measure a radial dimension of the work piece; a removable angle indicator attached to the work piece and aligned such that the angle indicator is sensed by the displacement sensor during rotation of the work piece, and a computer system including a non-transitory memory which stores instructions that, when performed, cause the computer to:
collect radial displacement data from the displacement sensor adjacent to the mount, wherein the radial displacement data indicates a radial dimension of a surface of the work piece;continue the collection of the radial displacement data as the work piece rotates about the mount;detect a portion of the radial displacement data representing the angle indicator in the collected radial displacement data;set an angular starting point at the portion;correlate each point of the radial displacement data with an angular location relative to and based on the angular starting point to determine a rotational position for the collected radial displacement data of the work piece relative to the angle indicator.