发明授权
US4147460A Method for piercing doubling plate for H-beam and tool for processing
doubling plate for H-beam
失效
H型梁双面加固板的加工方法及H型梁加工板的加工工具
- 专利标题： Method for piercing doubling plate for H-beam and tool for processing doubling plate for H-beam
- 专利标题（中）： H型梁双面加固板的加工方法及H型梁加工板的加工工具
-
申请号： US840678申请日： 1977-10-11
-
公开(公告)号： US4147460A公开(公告)日： 1979-04-03
- 发明人: Eiji Miyakawa
- 申请人： Eiji Miyakawa
- 申请人地址： JP Seki
- 专利权人： Miyakawa Industry Company Limited
- 当前专利权人： Miyakawa Industry Company Limited
- 当前专利权人地址： JP Seki
- 优先权： JP51/133947 19761108
- 主分类号： B23B35/00
- IPC分类号： B23B35/00 ; B23B39/22 ; B23B41/00 ; B23Q3/06
摘要：
A method for piercing a double plate for an H-beam by utilizing a multiple spindle H-beam piercing mill capable of piercing both flange portions and a web portion of the H-beam and a tool having a substantially H-shaped section and capable of being mounted on this piercing mill, in which the double plate for the H-beam is fixed to the tool and the double plate is pierced by the same drill arrangement as used for processing of the H-beam to which the double plate is to be attached.
公开/授权文献
- US4697220A Protective device for auto illumination system 公开/授权日：1987-09-29