Cutters – for shaping – Including holder having seat for inserted tool
Patent
1989-10-05
1990-06-19
Schmidt, Frederick R.
Cutters, for shaping
Including holder having seat for inserted tool
407113, 407115, 407116, B23P 1528
Patent
active
049348795
ABSTRACT:
In a cutting tool having a cutting element, the rake angle in the region following the land is approximately 35.degree. and decreases with increasing distance from the land. Beginning at a distance from the land corresponding approximately to the width of the land, a plurality of chip ridges project from the cutting face in the region between the cutting point regions to form a rake angle of about one-half the rake angle of the cutting face and whose frontal face on the side of the cutting edge projects to about the level of the land. The cutting face regions following the cutting face regions disposed between the chip ridges when seen in the chip discharge direction are configured as ramp elevations and are provided with run-up ramps ascending from the cutting face.
REFERENCES:
patent: 3792514 (1974-02-01), Ushijima
patent: 4214845 (1980-07-01), Mori
patent: 4447175 (1984-05-01), Warren
Toshiba Tungaloy K.K., "Throw-Away-Tip", Patent Abstracts of Japan, vol. 4, No. 76 (M-14) [558], Jun. 3rd, 1980.
"Sumitomo's Revolutionary New Carbide Inserts", Tooling and Production, vol. 45, Nr. 12, Mar. 1980, p. 140.
S. V. Apraksin, "Throwaway Multi-Facet Tips with a New Rake Face Form", Soviet Engineering Research, vol. 4, No. 1, Jan. 1984, pp. 67-68.
Cruz Lawrence
Nederlandse Hardmetaal Fabrieken B.V.
Schmidt Frederick R.
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