专利名称：Cylindrical punching blade 发明人：足塚 亮祐，橋本 秀一
普者黑几月份去最好
多少天过年申请号：JP2013024188
申请日：20130212
公开号：JP6083896B2
员工薪酬公开日：
广东省学习网
十二生肖兔20170222
专利内容由知识产权出版社提供
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电影剧本怎么写
摘要：PROBLEM TO BE SOLVED: To provide a cylindrical drilling blade, being high in mechanical strength, applicable to a single acting type and also autorotation type drilling device, also advantageous even to productivity and manufacturing cost, excellent in sharpness, and smaller in drilling resistance, by solving the problem on a conventional sheet metal hollow blade.SOLUTION: The cylindrical drilling blade is formed with a cylindrical part of combining a recesd part formed by butting of two side edges of a metal plate and formed on one side edge of the metal plate and a projection part formed on the other side edge of te metal plate in respon to the recesd part, in a cylindrical surface and an edge part formed on one end in the axial direction of the cylindrical part. Desirably, the recesd part and the projection part become a dovetail joint, and the edge part is formed as two or more of pointed head blades or the edge part is formed as a waveform blade.
申请人：株式会社日立メタルプレシジョン，日立金属株式会社
地址：東京都港区港南一丁目２番７０号，東京都港区港南一丁目２番７０号
国籍：JP,JP
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