Turning – Process of turning
Patent
1988-11-30
1991-12-03
Schwartz, Larry I.
Turning
Process of turning
408 1R, 408 54, 408103, 408224, B23B 100
Patent
active
050690930
ABSTRACT:
A method and apparatus for removing metal from a workpiece so as to form an incomplete hole therein is disclosed. The tool includes a shank having a plurality of cutting inserts adjustably attached to one end thereof. The cutting inserts are axially spaced apart from one another along the tool shank by a predetermined distance which is greater than the thickness of the workpiece. The first cutting insert functions as a drill or end mill to form a rough incomplete hole through the workpiece, while the second cutting insert functions as a boring tool to finish the incomplete hole. An opposite end of the tool shank is retained within a bore formed in a tool holder. The tool holder is supported within a conventional rotational means, such as a lathe. Both the opposite end of the tool shank and the bore formed in the tool holder are formed eccentrically to provide maximum flexibility in adjusting the rotational axis of the cutting inserts and, therefore, the diameter of the incomplete hole being formed.
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Dana Corporation
Schultz Robert
Schwartz Larry I.
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