Cutting device with tapered cutting element
AssigneeJoy Global Underground Mining LLC
InventorsJoaquim Antonio Soares de Sousa, Michael Laing
Life of this patent
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Abstract
A cutting device for cutting rock includes a disc and a plurality of cutting elements secured to the disc. The disc is supported for rotation about an axis of rotation, and the disc includes a peripheral edge extending around the axis of rotation. The plurality of cutting elements are spaced apart along the peripheral edge of the disc and positioned in a cutting plane. Each of the cutting elements includes a base portion and a cutting portion including a cutting edge, and the cutting portion has a width that is larger than a width of the base portion.
Claims21
1-18. (canceled)
A cutting device for engaging a rock face, the cutting device comprising:
- a disc supported for rotation about an axis of rotation, the disc including a peripheral edge extending around the axis of rotation, the peripheral edge including a plurality of bores space apart along the peripheral edge of the disc, each of the plurality of bores including a countersink opening;
- and
- a plurality of cutting elements each of the cutting elements including a base portion, a cutting portion including a cutting edge, and a transition portion including a tapered surface positioned between the base portion and the cutting portion, the plurality of cutting elements received within the plurality of bores, the tapered surfaces of the plurality of cutting elements engaging the countersink openings of the plurality of bores to distribute loads exerted on the cutting portions across a periphery of the countersink openings.
A cutting head for a mining machine, the cutting head comprising:
- a boom configured to be supported on a frame;
- a drive mechanism;
- and
- a cutting device supported on the boom and driven by the drive mechanism, the cutting device including
- a disc supported for rotation about an axis of rotation, the disc including a peripheral edge extending around the axis of rotation, the peripheral edge including a plurality of bores space apart along the peripheral edge of the disc, each of the plurality of bores including a countersink opening, and
- a plurality of cutting elements each of the cutting elements including a base portion, a cutting portion including a cutting edge, and a transition portion including a tapered surface positioned between the base portion and the cutting portion, the plurality of cutting elements received within the plurality of bores, the tapered surfaces of the plurality of cutting elements engaging the countersink openings of the plurality of bores to distribute loads exerted on the cutting portions across a periphery of the countersink openings.
Dependencies are inferred from the claim text.