B - Operations – Transporting – 26 – D
Patent
B - Operations, Transporting
26
D
29/39
B26D 1/00 (2006.01) B23B 27/00 (2006.01) B23B 27/04 (2006.01) B23B 27/06 (2006.01)
Patent
CA 1074089
WS-6994 CUTTING TOOL Abstract of the Disclosure: An improved cutting tool includes a tool holder having a recess in which an insert is held by a retaining screw. The retaining screw has a head end portion which extends into an open recess formed in a side of the insert to press the insert against bottom and side surfaces of the tool holder recess. To maximize the length of a threaded opening engaged by the retaining screw, the screw has a central axis which extends at an acute angle to a central axis of the tool holder. The bottom and side surfaces of the tool holder recess extend at acute angles to the central axis of the tool holder to firmly support the insert during a cutting operation. An outer end portion of a shank of the tool holder has a generally oval cross-sectional configuration which provides clearance for chips cut form a workpiece and also provides a relatively strong support for the insert. In addition, the oval cross-sectional configuration of the tool holder shank enables the insert to be utilized to form relatively deep grooves on the inside of a work- piece. The insert has a generally rectangular body which is re- ceived in the tool holder recess and a cantilevered cutting por- tion which extends outwardly from the insert body. The cutting portion has at least one cutting edge which is disposed in a plane containing the longitudinal central axis of the tool holder. A face surface on the cutting portion of the insert extends away from the cutting edge in a direction transverse to top and bottom surfaces of the body of the insert and to the bottom surface of the tool holder recess in which the insert is received.
294022
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