Method for machine tool and profilometer coordinate registration
US6970766B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2004 |
| Grant date | Nov 29, 2005 |
| Priority date | — |
| Expiry date | Apr 23, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/50074
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method for registering machine tool and profilometer coordinates, wherein the machine tool defines a C-axis having a zero position, C=0, comprises loading a sacrificial workpiece into the machine tool; cutting several first features in a surface of the sacrificial workpiece and producing a linear machine tool motion across the workpiece; determining the centroid of each first cut feature; fitting a line to the centroids of the first cut features; and measuring angle θ0 of the line relative to the C-axis zero position. The angle θ0 is the departure in profilometer coordinates from the C=0 line. The method includes moving the machine tool to a fixed radius; cutting several second features in a surface of the sacrificial workpiece and producing a circular machine tool motion across the workpiece; determining the centroid of each second cut feature; fitting a circle to the centroids of the second cut features; and determining a center of the circle. The center of the circle is the machine tool center in profilometer coordinates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.