ADZER BIT WITH CUTTING SEGMENTS
First Claim
Patent Images
1. An adzer bit, comprising:
- a support member comprising a base portion and a cap portion, the cap portion formed of a first material; and
a plurality of cutting segments axially disposed between the base portion and the cap portion and formed of a second material, the second material being harder than the first material, wherein each cutting segment comprises a leading surface, an outer arcuate surface, and a cutting edge disposed at a junction of the leading surface and the outer arcuate surface; and
wherein each cutting segment is defined by the outer arcuate surface, an inner arcuate surface, and a plurality of opposed end surfaces, an end surface of a first cutting segment being disposed adjacent an end surface of a second cutting segment;
wherein the base portion and the cap portion define a through hole configured to receive a fastener to couple the adzer bit to an adzer head.
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Abstract
An adzer bit includes a support member that defines a through hole that is configured to receive a fastener. The support member includes a cap portion and a base portion. The support member also defines an annular slot that is axially disposed between the cutting segment cap portion and the base portion. A plurality of cutting segments are received and secured in the annular slot. The material of the plurality of cutting segments is harder than the material of the support member.
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Citations
20 Claims
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1. An adzer bit, comprising:
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a support member comprising a base portion and a cap portion, the cap portion formed of a first material; and a plurality of cutting segments axially disposed between the base portion and the cap portion and formed of a second material, the second material being harder than the first material, wherein each cutting segment comprises a leading surface, an outer arcuate surface, and a cutting edge disposed at a junction of the leading surface and the outer arcuate surface; and wherein each cutting segment is defined by the outer arcuate surface, an inner arcuate surface, and a plurality of opposed end surfaces, an end surface of a first cutting segment being disposed adjacent an end surface of a second cutting segment; wherein the base portion and the cap portion define a through hole configured to receive a fastener to couple the adzer bit to an adzer head. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for forming an adzer bit, comprising:
securing a plurality of cutting segments to a support member comprising a cutting segment cap portion and a base portion, the plurality of cutting segments being secured axially between the cutting segment cap portion and the base portion, each of the plurality of cutting segments defining a leading surface, an outer arcuate surface, and a cutting edge disposed at a junction of the leading surface and the outer arcuate surface, the cutting edge extending radially beyond a periphery of the cutting segment cap portion, an end of a first cutting segment disposed adjacent an end of a second cutting segment, and the support member comprising a first material and the plurality of cutting segments comprising a second material, the second material being harder than the first material, wherein the base portion and the cutting segment cap portion define a through hole configured to receive a fastener to couple the adzer bit to an adzer head. - View Dependent Claims (14, 15, 16, 17)
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18. An adzer bit, comprising:
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a support member comprising a base portion and a cap portion, the cap portion formed of a first material; and a plurality of cutting segments axially disposed between the base portion and the cap portion and forming an annulus, the plurality of cutting segments formed of a second material, the second material being harder than the first material, wherein each cutting segment comprises a leading surface, an outer arcuate surface, and a cutting edge disposed at a junction of the leading surface and the outer arcuate surface; a brazing material securing the plurality of cutting segments between the base portion and the cap portion; and wherein each cutting segment is defined by the outer arcuate surface, an inner arcuate surface, and a plurality of opposed end surfaces, an end surface of a first cutting segment being disposed adjacent an end surface of a second cutting segment; wherein the base portion and the cap portion define a through hole configured to receive a fastener to couple the adzer bit to an adzer head. - View Dependent Claims (19, 20)
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Specification