Apparatus for grinding a helical surface on a flat blade

Details Apparatus for grinding a helical surface on a flat blade Apparatus for grinding a helical surface on a flat blade

B - Operations, Transporting

24

B

51/44

B24B 3/40 (2006.01)

Patent

CA 1143946

Abstract Apparatus for grinding a helical cutting surface on a flat cutting blade. Prior art grinders are complex difficult to operate and expensive to use. The present grinding machine comprises a stationary support 74, a blade arbor 30, an adjustable cam plate 78, a grinder carriage assembly 80, a grinder assembly 82, cam follower 112, mounted on the grinder carriage assembly 80, and a grinding stone 128 mounted on the grinder carriage assembly 80. When the carriage and the grinding stone are reciprocated along the axis of rotation of the grinding arbor the cam follower 112 contacts the lower surface of the cam plate 78 whereby the grinding arbor is oscillated about its axis of rotation and a helical cutting surface is ground into the blade 34.

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