Gear cutting – milling – or planing – Milling – Process
Patent
1980-04-30
1981-09-01
Vertiz, O. R.
Gear cutting, milling, or planing
Milling
Process
51309, 82 1C, 106 732, 106 734, 407119, 408 1R;, 29557, B23C 100, C04B 3510, C04B 3558
Patent
active
042869056
ABSTRACT:
A method is disclosed for removing stock from a metal part comprised of steel, malleable cast iron or nodular cast iron. A moving relationship is established between the part and a cutting tool formed of a substantially full dense hot pressed ceramic material consisting essentially of a generally uniform mixture of 50-70% by weight Al.sub.2 O.sub.3 and the remainder substantially Si.sub.3 N.sub.4. The tool is advanced into the surface of the part at a predetermined depth of cut and feed rate which results in the removal of stock from the part during periods of relative movement. A portion of the Al.sub.2 O.sub.3 may be replaced by up to 15% stabilized ZrO.sub.2 or HfO.sub.2 to further improve strength at higher temperatures.
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patent: 4066468 (1978-01-01), Kamigaito et al.
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patent: 4127416 (1978-11-01), Lumby et al.
patent: 4147759 (1979-04-01), Demit
patent: 4227842 (1980-10-01), Samanta et al.
Bell Mark
Ford Motor Company
Johnson Olin B.
Malleck Joseph W.
Vertiz O. R.
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