Method and apparatus for judging fracture of metal stamped product, program and computer-readable recording medium
US8464591B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2009 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Feb 3, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0062
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In the process of target stamping for fracture judgment, an acquisition unit acquires, as target data for fracture judgment, strain of a target die to be measured over the duration from the start time of stamping measured by strain measuring units to the finishing time of stamping, and also acquires production conditions typically by measurement. An extraction unit extracts the reference data, which gives the minimum total of differences between the production conditions of the reference data and the production conditions of the target data for fracture judgment, as the comparative data. A judging unit compares strain in the comparative data extracted by the extraction unit and strain in the target data for fracture judgment, and judges occurrence of a crack in a stamped product, if the maximum value of the difference is not smaller than a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.