Workpiece inspection method
US4991304A · kind A · utility
36Cited by
13References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 26, 1989 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Jan 26, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A succession of nominally identical workpieces is measured using a probe on a coordinate measuring machine. To enable most of the workpieces to be probed at a fast speed (step 40), and compensate for the errors thereby introduced, one workpiece is also probed at a slow speed (step 32). For that workpiece, a series of error values is calculated (step 36) from the differences between the fast and slow measurements. The subsequent fast measurements on succeeding workpieces are corrected by making use of these error values (step 42).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.