Drill bar with a cutter insert

Details Drill bar with a cutter insert Drill bar with a cutter insert

1984-08-23

1989-11-14

Bishop, Steven C.

Cutting by use of rotating axially moving tool

Tool-support with means to move tool relative to tool-support

To move radially

408181, 408713, B23B 2902

Patent

active

048803391

ABSTRACT:
In a drill bar having a transverse slot, in which a cutter assembly having two diametrically oppositely positioned cutters is inserted, the cutter assembly has a housing from which the outer cutting edges of the cutters are outwardly extended. Each cutter is formed of a one-piece made of high-strength material and has an inner cutting edge and an inner and outer inclined wall adjusted to an inclined wall of the tapered tip of the adjustment bolt which is inserted into the recess formed in the housing to adjust the distance between the outer cutting edges of the two cutters in dependence on a hole to be drilled.

REFERENCES:
patent: 1062225 (1913-05-01), Crowley
patent: 1218992 (1917-03-01), Ford
patent: 1659370 (1928-02-01), Magin
patent: 2680390 (1954-06-01), Chapman
patent: 2811055 (1957-10-01), Zempel
patent: 3124980 (1964-03-01), Gill et al.
patent: 3688367 (1972-09-01), Bennett

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