Method for piercing doubling plate for H-beam and tool for processing doubling plate for H-beam
AssigneeMiyakawa Industry Co., Ltd.
InventorEiji Miyakawa
Life of this patent
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Abstract
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.
Claims18
A method for piercing double plates for H-beams by utilizing a multiple spindle H-beam piercing mill in which from at least two faces among both the side faces and the upper face the piercing operation is possible and a tool having a substantially H-shaped section and being capable of being set and supported on said piercing mill, said method comprising fixing double plates for an H-beam to at least one face among both the side faces and the upper face of said tool and piercing said double plates with the same drill arrangement as that to be used for piercing the H-beam to which said double plates are to be attached.
A tool for processing double plates, which comprises a pair of vertical side plates to be set on supporting rollers of a multiple spindle H-beam piercing mill, a horizontal supporting plate connecting said side plates, a setting portion outwardly projected from the lower portion of at least one of said side plates, and fixing means for fixing double plates set on the top face of said setting portion.
Dependencies are inferred from the claim text.