RU1768746C - Rolling-cutter drilling - Google Patents
Rolling-cutter drillingInfo
- Publication number
- RU1768746C RU1768746C SU884647027D SU4647027D RU1768746C RU 1768746 C RU1768746 C RU 1768746C SU 884647027 D SU884647027 D SU 884647027D SU 4647027 D SU4647027 D SU 4647027D RU 1768746 C RU1768746 C RU 1768746C
- Authority
- RU
- Russia
- Prior art keywords
- teeth
- tooth
- blunting
- end surface
- pad
- Prior art date
Links
Landscapes
- Earth Drilling (AREA)
Abstract
Изобретение относитс к породоразру- шающему инструменту. Цель - повышение надежности долота за счет увеличени прочности зубьев. Буровое шарошечное долото содержит лапы с цапфами, на которых посредством подшипников смонтированы шарошки , оснащенные фрезерованными зубь ми . Зубь имеют площадку притуплени А, наклоненную к ней под острым углом торцевую поверхность Б. Плоскость В, перпендикул рна к основанию зуба, определ ет границу консольной части 7 с уширением, нависающей над корнем зуба. Поверхность притуплени А и наклонна торцева поверхность Б соединены плавным переходом Д. По бокам зубь ограничены поверхност ми Е. Режущие кромки площадки притуплени выполнены в виде плавной кривой или ломаной линии. Наличие консоли с уширением и плавный переход площадки притуплени в торцевую поверхность зуба позвол ет значительно повысить прочность зубьев и при этом исключить воротники на забое. 1 з. п. ф-лы, 2 ил.The invention relates to a rock cutting tool. The goal is to increase the reliability of the bit by increasing the strength of the teeth. The cone drill bit contains paws with trunnions, on which cones equipped with milled teeth are mounted by means of bearings. The teeth have a blunting pad A, an end surface B inclined toward it at an acute angle. Plane B, perpendicular to the base of the tooth, defines the boundary of the cantilever portion 7 with a broadening overhanging the tooth root. The blunting surface A and the inclined end surface B are connected by a smooth transition D. The sides of the tooth are bounded by the surfaces E. The cutting edges of the blunting pad are made in the form of a smooth curve or a broken line. The presence of a cantilever with broadening and a smooth transition of the blunting pad to the tooth end surface can significantly increase the strength of the teeth and at the same time eliminate collars on the face. 1 s P. f-ly, 2 ill.
Description
77
№/No. /
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU884647027A RU1768745C (en) | 1988-09-16 | 1988-09-16 | Drill bit rolling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RU1768746C true RU1768746C (en) | 1992-10-15 |
Family
ID=21427178
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU884647027D RU1768746C (en) | 1988-09-16 | 1988-09-16 | Rolling-cutter drilling |
| SU884647027A RU1768745C (en) | 1988-09-16 | 1988-09-16 | Drill bit rolling cutter |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU884647027A RU1768745C (en) | 1988-09-16 | 1988-09-16 | Drill bit rolling cutter |
Country Status (1)
| Country | Link |
|---|---|
| RU (2) | RU1768746C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112006002134T5 (en) | 2005-08-08 | 2008-06-26 | Halliburton Energy Services, Inc., Houston | Methods and systems for constructing and / or selecting drilling equipment using forecasts of the gear of the rotary drill bit |
| US7860696B2 (en) | 2005-08-08 | 2010-12-28 | Halliburton Energy Services, Inc. | Methods and systems to predict rotary drill bit walk and to design rotary drill bits and other downhole tools |
-
1988
- 1988-09-16 RU SU884647027D patent/RU1768746C/en active
- 1988-09-16 RU SU884647027A patent/RU1768745C/en active
Non-Patent Citations (1)
| Title |
|---|
| Авторское свидетельство СССР № 1148955, кл. Е 21 В 10/16,1983. * |
Also Published As
| Publication number | Publication date |
|---|---|
| RU1768745C (en) | 1992-10-15 |
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