发明名称 |
Abnormality determination and estimation method for product of plastic working, and an abnormality determination and estimation device |
摘要 |
The abnormality determination and estimation means (200a) estimates the presence or absence of an abnormality of the product of plastic working with respect to an elastic wave in processing of a non-defective product, based on a first elastic wave A1 that is an elastic wave generated in a processing step immediately before an upper die comes into contact with a lower die after the beginning of plastic working, a second elastic wave A2 that is an elastic wave generated in a processing step when the upper die comes into contact with the lower die, and a third elastic wave A3 that is an elastic wave generated in a processing step after the upper die comes into contact with the lower die. This makes it possible to improve the precision of abnormality detection and discriminate the abnormalities. <IMAGE> |
申请公布号 |
EP1484607(A1) |
申请公布日期 |
2004.12.08 |
申请号 |
EP20040012902 |
申请日期 |
2004.06.01 |
申请人 |
DENSO CORPORATION;YONEKURA MFG. CO., LTD. |
发明人 |
MURAO, MASUAKI;ONISHI, YASUHIRO |
分类号 |
B30B15/00;B21D22/00;G01N29/14 |
主分类号 |
B30B15/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|