Abnormality determination and estimation method for product of plastic working, and an abnormality determination and estimation device
First Claim
1. An abnormality determination and estimation method for a product of plastic working, comprising:
- providing an AE sensor in a processing apparatus, for detecting an elastic wave in the processing apparatus; and
an abnormality determination and estimation method for discriminating at least two or more abnormalities of the product of plastic working and estimating a presence or an absence of the abnormality for each processing step of the processing apparatus based on the elastic wave detected by the AE sensor.
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Abstract
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 Al 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.
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Citations
18 Claims
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1. An abnormality determination and estimation method for a product of plastic working, comprising:
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providing an AE sensor in a processing apparatus, for detecting an elastic wave in the processing apparatus; and
an abnormality determination and estimation method for discriminating at least two or more abnormalities of the product of plastic working and estimating a presence or an absence of the abnormality for each processing step of the processing apparatus based on the elastic wave detected by the AE sensor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An abnormality determination and estimation device for a product of plastic working in the plastic working, comprising:
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an AE sensor, provided in a processing apparatus, for detecting an elastic wave in the processing apparatus; and
abnormality determination and estimation means for discriminating at least two or more abnormalities and estimating a presence or absence of the abnormality of the product of plastic working based on the elastic wave detected by the AE sensor for every processing step of the processing apparatus. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An abnormality determination and estimation method for a product of plastic working, comprising:
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providing an AE sensor in a processing apparatus;
detecting an elastic wave in the processing apparatus with the AE sensor;
discriminating at least two or more abnormalities of the product of plastic working; and
estimating a presence or absence of the abnormality for each processing step of the processing apparatus based on the elastic wave detected by the AE sensor. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification