B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
51/45
B24B 3/04 (2006.01)
Patent
CA 1082463
ONE CHUCK GRINDING APPARATUS FOR END MILLING CUTTERS AND THE LIKE ABSTRACT OF THE DISCLOSURE Apparatus for manually sharpening the bottom, radially divergent, flute ends or cutting edges of an end milling cutter (hereinafter referred to as an "end mill") which apparatus includes: a stationary, beveled disc-type or plain grinding wheel mounted for rotation about a horizontal axis (or y-axis), so as to present the face of the wheel to an operator, and a tool-holding fixture having a base member mounted on the worktable of a conventional tool grinder. The worktable of the grinder is capable of movement along three axes, namely a longitudinal axis (or x- axis), a horizontal axis (or y-axis) toward and away from the circular face of the disc, and a vertical axis (or z-axis), by manual manipulation of individual table- adjucting wheels. The fixture includes a workhead mounted on a carriage which inturn is translatably mounted for linear to and fro motion, on a base member withbearing means The workhead is mounted on the carriage for pivotable movement about a longitudinal axis (x-axis). An end mill holder comprising a bushing or collet is rotatably disposed in the workhead so that the end mill may be rotated about the end mill's longitudinal (vertical) axis. The end mill is held in a vertical plane, and index plate means are preferably provided for indexing each cutting tooth or edge of an end mill along the y-axis before it is sharpened. Once the end mill is locked into the holder, or "chucked", the end mill may be dished and gashed, and primary and secondary clearances of the flute ends may be provided, all without removingthe end mill, hence the "one chuck" designation. - 16 -
315886
Macrae & Co.
Maharidge Steve
LandOfFree
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