发明名称 |
INSERT CUTTER FOR CUTTING KERFS |
摘要 |
<p>1410534 Kerf cutters DRESSER INDUSTRIES INC 4 May 1973 [8 May 1972] 21425/73 Heading E1F A cutter for mounting on the rotary head of a boring machine or the body of an earth boring bit includes at least two rows (1-8) of inserts 10 adapted for cutting concentric circular kerfs; the inserts of each row being arranged so that the distance between the nearest points 29 of adjacent inserts (cutting structure interruption) is less than 75% of the distance between the central axis 28 of adjacent inserts (pitch chord). In the embodiment shown a cutter shell 11 is freely rotatable on a gearing shell 12 locked to a saddle 13 and carbide inserts 10 have elongated head portions 27 aligned along the insert rows and parallel leading and trailing flanks to provide a cutting structure interruption which is less than the pitch chord, the inserts in cutting simulating a continuous line contact with the formations.</p> |
申请公布号 |
CA975389(A) |
申请公布日期 |
1975.09.30 |
申请号 |
CA19730168525 |
申请日期 |
1973.04.12 |
申请人 |
DRESSER INDUSTRIES, INC. |
发明人 |
OTT, EUGENE G.;CONN, WILLIAM M. |
分类号 |
E21D9/10;E21B10/10;E21B10/52 |
主分类号 |
E21D9/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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