Apparatus for drilling or reaming

Cutting by use of rotating axially moving tool – Tool or tool with support – Including detailed shank

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Details

408 57, B23B 3144, B23B 2710

Patent

active

041134052

ABSTRACT:
A hollow drive shaft, to one end of which a cutterhead is threadedly attached for longitudinal and rotational movement as the shaft is moved through a pipe to be reamed. Passages are provided in the cutterhead for transmission of fluid in the hollow shaft to the exterior of the cutterhead for cooling and removal of drilled or reamed material. The outer periphery of the drive shaft may be provided with a rectangular (square) configuration. The end of the shaft adjacent the cutterhead may receive a cap including a sleeve portion and a flange portion which fits over the end of the drive shaft; the flange may thus be interposed between the drive shaft end face and a shoulder on the cutterhead. The cap fits closely against the periphery of the drive shaft in order to transmit deformation forces from the cutter to the shaft across a wide area of the shaft periphery.

REFERENCES:
patent: 2933321 (1960-04-01), Cascone
patent: 3647310 (1972-03-01), Morse

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