Improved burr for preparing a homogeneous pulpstone surface

Details Improved burr for preparing a homogeneous pulpstone surface Improved burr for preparing a homogeneous pulpstone surface

B - Operations, Transporting

24

B

B24B 9/06 (2006.01) B24B 3/58 (2006.01) B24B 53/07 (2006.01) B24D 5/02 (2006.01)

Patent

CA 2378872

An improved burr for sharpening the grinding surface of a pulpstone includes a novel tooth configuration for better wear of the burr and enhanced grinding properties of the pulpstone. The profile configuration of the burr teeth has a truncated tip portion in the form of a rounded tip portion, a flat tip portion, or an obtusely angled tip portion to avoid a sharply pointed tip. The tip portion connects opposite sides of the tooth, with the sides forming either a symmetrical or an asymmetrical tooth profile using linear, convex involute, and concave involute side configurations. The present invention comprises a further improvement to a pulpstone sharpening burr, wherein the lead angle of the bun teeth changes periodically over the axial length of the burr to provide the pulpstone with a wave-like groove pattern.

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