Method for piercing doubling plate for H-beam and tool for proce

Details Method for piercing doubling plate for H-beam and tool for proce Method for piercing doubling plate for H-beam and tool for proce

1977-10-11

1979-04-03

Spruill, Robert Louis

Cutting by use of rotating axially moving tool

Processes

Bit detachable

269 41, 269293, 269296, 269303, 408 39, 408103, B23B 3500, B23Q 306

Patent

active

041474600

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.

REFERENCES:
patent: 919823 (1909-04-01), Childs
patent: 2302878 (1942-11-01), Muhl et al.

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