Cutting by use of rotating axially moving tool – Tool or tool with support
Patent
1987-08-04
1988-12-20
Weidenfeld, Gil
Cutting by use of rotating axially moving tool
Tool or tool with support
408238, B23B 4100
Patent
active
047922648
ABSTRACT:
The cutter head of a reamer carries a circular tool bit and two guide members. Each guide member has an outer-most edge at the furthest distance from the center of rotation of the tool and slanted edges inclined at progressively greater angles from the outer edge towards the front of the tool where the initial cut takes place. The first slanted edge, at an angle of less than 10 degrees and preferably between 3 and 5 degrees, intersects the outer-most edge at a point which lags the extreme point on the tool bit by about 0.4 mm in the direction of advance of the tool. The first slanted edge extends at least to the radial plane containing the extreme point of the tool bit. Thereafter, a slanted edge at an angle inclined between 15 and 25 degrees extends in the forward direction, to be followed by a third slanted edge inclined at an angle to the outer-most edge of between 30 and 75 degrees. The exact angles of inclination are determined by the diameter of the circular tool bit, which, in turn, is determined by the material to be cut.
REFERENCES:
patent: 4133399 (1979-01-01), Herrmann
"Machinery and Production Engineering" Sep. 19, 1979, vol. 135, No. 3479, pp. 60-62.
"Machinery and Production Engineering" Sep. 19, 1979, vol. 135, No. 3479, pp. 59-61.
German article (Tiefbohrwerkzeuge f/u/ r die Metallbearbeitung), pp. 42 and 44 by Thomas Friese (May 11, 1979).
H/a/ berle Friedrich
Kress Dieter
Kline Thomas M.
Mapal Fabrik f/u/ r Pr/a/ zisionswerkzeuge Dr Kress KG
Teltscher Erwin S.
Weidenfeld Gil
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