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Patent Searching and Data


Title:
SCREW TIGHTENING DEFECT DETERMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/235041
Kind Code:
A1
Abstract:
Even when a tapping screw is used in a soft material, it is determined whether or not a screw tightening defect has occurred. A PLC (10) comprises a determination unit (13) which for a rotational torque data sequence having a predetermined number of data points, generates a normalized torque data sequence that is the amount of change with respect to rotational torque at a first data point of the data sequence, and determines whether screw tightening is defective, on the basis of the normalized torque data sequence.

Inventors:
SASAKI, Tatsuya (801 Minamifudodo-cho, Horikawahigashiiru, Shiokoji-dori, Shimogyo-ku, Kyoto-sh, Kyoto 30, JP)
SHIBUTANI, Takanori (801 Minamifudodo-cho, Horikawahigashiiru, Shiokoji-dori, Shimogyo-ku, Kyoto-sh, Kyoto 30, JP)
Application Number:
PCT/JP2021/007993
Publication Date:
November 25, 2021
Filing Date:
March 02, 2021
Export Citation:
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Assignee:
OMRON CORPORATION (Horikawahigashiiru Shiokoji-dori, Shimogyo-ku, Kyoto-sh, Kyoto 30, JP)
International Classes:
B25B23/14
Attorney, Agent or Firm:
MURAKAMI, Takashi (2-6 Tenjinbashi 2-chome Kita, Kita-ku, Osaka-sh, Osaka 41, JP)
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