Cutting by use of rotating axially moving tool – Processes – Bit detachable
Patent
1993-04-30
1994-09-13
Bishop, Steven C.
Cutting by use of rotating axially moving tool
Processes
Bit detachable
74 89, 269250, 279157, 408108, 408112, 408237, 408234, 470103, 476 67, B23B 3500, B23B 3914, B23B 4726
Patent
active
053463374
ABSTRACT:
An apparatus for cutting threads in holes of fabricated parts including a vertical support shaft supporting at least one arm extended out over the part with a tap coupled to a motor on the end of each of the at least one arm. The arm is supported on the vertical shaft by a joint support which can be rotated around the vertical shaft and slide vertically on the shaft. A spring on the shaft is biased to return the joint support to a rest position. The vertical shaft can also be positioned vertically by virtue of a manually operated friction drive located in the base. These several degrees of freedom enable a user to position a tap in any one of a multiplicity of holes located over a large area of the part. A means and method for securing the tap in the tap chuck is provided.
REFERENCES:
patent: 2587520 (1952-02-01), Peplow
patent: 3348421 (1967-10-01), Boice
patent: 4248101 (1981-02-01), Santoro
patent: 4780030 (1988-10-01), Zudall
patent: 4820087 (1989-04-01), Ikemoto et al.
patent: 5076740 (1991-12-01), Petrie
patent: 5174424 (1992-12-01), Eriksson
Bishop Steven C.
Samuel Smith Robert
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