CN2743526Y - Top deviating wedge shaped teeth - Google Patents

Top deviating wedge shaped teeth Download PDF

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Publication number
CN2743526Y
CN2743526Y CN 200420076969 CN200420076969U CN2743526Y CN 2743526 Y CN2743526 Y CN 2743526Y CN 200420076969 CN200420076969 CN 200420076969 CN 200420076969 U CN200420076969 U CN 200420076969U CN 2743526 Y CN2743526 Y CN 2743526Y
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CN
China
Prior art keywords
wedge
surface
teeth
crown
small
Prior art date
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CN 200420076969
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Chinese (zh)
Inventor
樊孝兵
陈东方
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江汉石油钻头股份有限公司
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Priority to CN 200420076969 priority Critical patent/CN2743526Y/en
Application granted granted Critical
Publication of CN2743526Y publication Critical patent/CN2743526Y/en

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Abstract

The utility model relates to top deviating wedge shaped teeth of alloy material, which is used on the roller bits for petroleum, natural gas, and geological well drilling as well as on the drill bits. The utility model comprises a denticle and a corona. The corona consists of a tapered crown base and two correspondingly arranged wedge surfaces which comprise a big wedge surface and a small wedge surface; the included angle between the big wedge surface and the shaft line of the denticle is greater than the included angle between the small wedge surface and the shaft line of the denticle; the big wedge surface and the small wedge surface intersect at the addendum and transit through hollows. The utility model has the advantages that the cutting edges formed by the intersection of the big wedge surface and the crown base are longer, thus enhancing the cutting efficiency of the wedge shaped teeth, reducing the abrasion of the teeth, and extending the service life; the conical surface, the small wedge surface and the tip radius surface are provided with composite layers of diamond, therefore, the abrasive resistance of the surfaces is higher than the abrasive resistance of the big wedge surface; in the process of cutting the well casing, the cutting edges formed by the intersection of the big wedge surface and the conical surface have self-sharpening action, thereby, further enhancing the cutting efficiency of the teeth.

Description

偏顶楔形齿 Partial top wedge teeth

技术领域 FIELD

本实用新型涉及一种用于石油、天然气和地质钻井牙轮钻头以及矿山开采钎头等工具上的用合金材料制成的偏顶楔形齿。 The present invention relates to a method for oil, gas and geological drilling partial top wedge and roller cone bit teeth alloy material on top of the mining tool solder.

背景技术 Background technique

在现有技术中,牙轮钻头中使用较多的切削齿为圆锥齿和楔形齿,楔形齿主要用于牙轮背锥与外排齿交界处,牙轮钻头工作时,楔形齿以其中一个楔面刮削井壁。 In the prior art, the roller bits used more cutting tooth conical teeth and tooth wedge, the wedge teeth mainly for cone outer row of teeth and the back cone junction, while working cone bit, wherein a wedge-shaped teeth wedge surface scraping wall. 现有的楔形齿两个楔面相对称,即两个楔面与齿体轴线的夹角相等,两个楔面的面积相等,切削刃也相同,这样对于主要用一个楔面来切削井壁的楔形齿来讲,存在着切削分担不够合理均匀,因而楔形齿的切削效率较低,使用寿命较短的问题。 Existing wedge teeth of the two symmetrical wedge surface, i.e. the angle between two wedge surfaces of the tooth body axis is equal to, equal to the area of ​​the two wedge surfaces, cutting edges are the same, so that a wedge with respect to the main surface of the wall to cut the wedge-shaped teeth is concerned, there is not reasonable sharing of cutting uniform, and thus a lower wedge-shaped tooth cutting efficiency, shorter life issues.

发明内容 SUMMARY

本实用新型所要解决的技术问题是针对上述现有技术存在的不足而提供一种切削分担合理,使用寿命较长,切削效率较高的偏顶楔形齿。 The present invention is to solve the technical problem for the shortcomings of the prior art and to provide a reasonable sharing cutting, long life, high efficiency partial top cutting wedge teeth.

本实用新型为解决上述提出的问题所采用的技术方案为:包括有齿体1和齿冠4,所述的齿冠由锥形冠基和对应设置的两个楔面构成,其不同之处在于所述的两个楔面包括大楔面2和小楔面5,大楔面与齿体轴线的夹角大于小楔面与齿体轴线的夹角,大、小楔面相交于齿顶并由圆弧面3过渡。 Aspect of the present invention to solve the problems set forth above is employed: the body comprises a toothed crown and 4, the two wedge surfaces is provided by a tapered crown crest base 1 and the corresponding configuration, which differs from the wherein the two wedge surfaces of the wedge surface 2 comprises a large and a small wedge surface 5, the angle between the teeth and the large wedge surface is greater than the angle between the axis of the body of the tooth surface of the small wedge axis of the body, large and small wedge surface intersects the addendum 3 transition by an arcuate surface.

按上述方案,所述的大楔面与齿体轴线的夹角为45~85°,小楔面与齿体轴线的夹角为40~5°,所述的锥形冠基为圆锥形冠基或锥球形冠基;所述的齿体、齿冠由硬质合金制成,在硬质合金齿冠的锥形面、小楔面及齿顶圆弧面上覆有金刚石复合层。 The above-described embodiment, the angle between the wedge surfaces of the large axis of the body of the tooth is 45 ~ 85 °, the wedge angle between the small axis of the body surface of the tooth is 40 ~ 5 °, said tapered conical crown crest base spherical cone or a crown-yl group; teeth in the tooth crown made of cemented carbide, cemented carbide in the tapered surface of the crown, a small wedge surface and the tooth tip arc surface coated with a diamond composite layer.

本实用新型的有益效果在于:1、大楔面的面积较大,与冠基锥面相交形成的切削刃较长,当其作为切削井壁的主要楔面时,不仅切削面较大,而且单位面积上的切削任务相对减少,因而提高了楔形齿的切削效率,齿的磨损减小,使用寿命延长;2、由于锥面、小楔面及齿顶圆弧面上具有金刚石复合层,这些面的耐磨性比大楔面高,这样在切削井壁过程中,大楔面与锥面相交所形成的切削刃具有自锐作用,使楔形齿保持其锐利性,从而进一步增强齿的切削效率。 The present invention is that the beneficial effects: 1, a large wedge surface area is large, the tapered surface intersecting with the base of the cutting crown is formed longer edge, when the main surface as a cutting wedge of the wall, only the larger cutting surface, and cutting application per unit area is relatively reduced, thereby improving the cutting efficiency of the wedge-shaped teeth, the teeth reduce wear, extend the service life; 2, due to the tapered surface, and a small wedge surface has a tooth tip arcuate surface of the diamond compact layer, these high surface abrasion resistance of greater than wedge surface, so that cutting the borehole wall, the large wedge surface intersecting the cutting edge with a tapered surface is formed having a self-sharpening action, the wedge teeth to maintain its sharpness, to further enhance the cutting teeth effectiveness.

附图说明 BRIEF DESCRIPTION

图1为本实用新型一个实施例的正视图。 Figure 1 is a front view of a new practical embodiment.

图2为图1的俯视图。 Figure 2 is a plan view of FIG. 1.

图3为图1的左视图图4为本实用新型一个实施例的立体图。 3 is a left side view of FIG. 1 FIG. 4 is a perspective view of a new practical embodiment of the present embodiment.

具体实施方式 Detailed ways

以下结合附图进一步说明本实用新型的实施例,包括有一圆柱形的齿体1、齿体的上端具有齿冠4,所述的齿冠包括圆锥形的冠基,在冠基上对应的两侧分设有大楔面2和小楔面5,其中大楔面与齿体轴线8的夹角α为50~70°,由冠基底侧向上延伸,其具有较大的楔面面积,与锥形冠基形成的切削刃7较长;小楔面与齿体轴线8的夹角β为40~20°,对应设在冠基的另一侧,楔面面积较小;大、小楔面相交于齿顶,由圆弧面3连接过渡,整个楔形齿由硬质合金材料制成。 Further described below with reference to an embodiment of the present invention, comprising a cylindrical upper end of the body 1 of the tooth, the tooth element 4 having a crown, said crown comprising a conical crown group, corresponding to the two groups on the crown side of the dividing wedge surface 2 is provided with large and small wedge surfaces 5, wherein the wedge surfaces of the tooth body large axial angle α 8 is 50 ~ 70 °, the crown extending from the upper substrate side, which has a larger surface area of ​​the wedge, the taper a crown-shaped cutting edge 7 is formed long group; small wedge faces of the tooth body axis angle β 8 is 40 ~ 20 °, the corresponding crown provided on the other side of the base, the smaller the area of ​​the wedge surface; large and small wedge surfaces intersect at the tooth top arc surface 3 is connected by a transition, the entire wedge-shaped teeth made of cemented carbide material. 为进一步增强楔形齿的切削性能和耐磨性,在齿冠的小楔面5、圆锥面6及齿顶圆弧面3上覆有金刚石复合层。 To further enhance cutting performance and wear resistance of the teeth of the wedge, the wedge surface in a small crown 5, 6 and the conical surface is covered with a diamond composite layer 3 on the tooth top arc surface. 由于金刚石复合层具有更高硬度,因此,可使大楔面与圆锥面所形成的切削刃具有自锐作用。 Since the diamond compact layer having a higher hardness, therefore, allows large wedge surface and the cutting edge formed by a conical surface having a self-sharpening effect.

Claims (5)

1.一种偏顶楔形齿,包括有齿体和齿冠,所述的齿冠由锥形冠基和对应设置的两个楔面构成,其特征在于所述的两个楔面包括大楔面和小楔面,大楔面与齿体轴线的夹角大于小楔面与齿体轴线的夹角,大、小楔面相交于齿顶并由圆弧面过渡。 A partial top wedge teeth, including teeth and the crown body, the two wedge surfaces provided by a conical toothed crown crown group and the corresponding configuration, characterized in that the two wedge surfaces of the wedge-sized small face and wedge face, the large angle between the teeth and the wedge surface is greater than the angle between the axis of the body of the tooth surface of the small wedge axis of the body, large and small wedge surface intersects the tooth top arc surface by the transition.
2.按权利要求1所述的偏顶楔形齿,其特征在于所述的大楔面与齿体轴线的夹角为45~85°,小楔面与齿体轴线的夹角为40~5°。 2. Partial top according to claim 1, said wedge-shaped teeth, wherein the angle between the wedge surfaces of the large axis of the body of the tooth is 45 ~ 85 °, the wedge angle between the small axis of the body of the tooth surface 40 to 5 °.
3.按权利要求1或2所述的偏顶楔形齿,其特征在于所述的锥形冠基为圆锥形冠基或锥球形冠基。 3. Partial top wedge teeth to claim 1 or claim 2, characterized in that said tapered conical crown-yl group or a crown bevel spherical crown group.
4.按权利要求1或2所述的偏顶楔形齿,其特征在于所述的齿体、齿冠由硬质合金制成,在硬质合金齿冠的锥形面、小楔面及齿顶圆弧面上覆有金刚石复合层。 4. Partial top wedge teeth of claim 1 or claim 2, characterized in that said body teeth, crown made of cemented carbide, cemented carbide tapered surface of the crown, and a small tooth wedge surfaces a top arcuate surface coated with a diamond composite layer.
5.按权利要求2所述的偏顶楔形齿,其特征在于大楔面与齿体轴线的夹角为50~70°,小楔面与齿体轴线的夹角为40~20°,对应设在冠基的另一侧。 5. Partial top wedge teeth to claim 2, characterized in that the angle between the large axis of the body wedge surface of the tooth is 50 ~ 70 °, the wedge angle between the small axis of the body surface of the tooth is 40 ~ 20 °, corresponding to provided on the other side of the crown groups.
CN 200420076969 2004-10-15 2004-10-15 Top deviating wedge shaped teeth CN2743526Y (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102933786A (en) * 2010-05-03 2013-02-13 贝克休斯公司 Cutting elements, earth-boring tools, and methods of forming such cutting elements and tools
CN103069099A (en) * 2010-08-06 2013-04-24 贝克休斯公司 Shaped cutting elements for earth-boring tools, earth-boring tools including such cutting elements, and related methods
CN104632082A (en) * 2015-02-10 2015-05-20 北京尚德隆超硬材料技术开发有限责任公司 Composite tooth
US9200483B2 (en) 2010-06-03 2015-12-01 Baker Hughes Incorporated Earth-boring tools and methods of forming such earth-boring tools
US9316058B2 (en) 2012-02-08 2016-04-19 Baker Hughes Incorporated Drill bits and earth-boring tools including shaped cutting elements

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102933786A (en) * 2010-05-03 2013-02-13 贝克休斯公司 Cutting elements, earth-boring tools, and methods of forming such cutting elements and tools
US9732562B2 (en) 2010-05-03 2017-08-15 Baker Hughes Incorporated Earth-boring tools having shaped cutting elements
US9200483B2 (en) 2010-06-03 2015-12-01 Baker Hughes Incorporated Earth-boring tools and methods of forming such earth-boring tools
CN103069099A (en) * 2010-08-06 2013-04-24 贝克休斯公司 Shaped cutting elements for earth-boring tools, earth-boring tools including such cutting elements, and related methods
CN103069099B (en) * 2010-08-06 2016-08-03 贝克休斯公司 Shaped cutting element earth-boring tool, the boring tool having such a cutting element and an associated method
US9458674B2 (en) 2010-08-06 2016-10-04 Baker Hughes Incorporated Earth-boring tools including shaped cutting elements, and related methods
US9022149B2 (en) 2010-08-06 2015-05-05 Baker Hughes Incorporated Shaped cutting elements for earth-boring tools, earth-boring tools including such cutting elements, and related methods
US10017998B2 (en) 2012-02-08 2018-07-10 Baker Hughes Incorporated Drill bits and earth-boring tools including shaped cutting elements and associated methods
US9316058B2 (en) 2012-02-08 2016-04-19 Baker Hughes Incorporated Drill bits and earth-boring tools including shaped cutting elements
CN104632082A (en) * 2015-02-10 2015-05-20 北京尚德隆超硬材料技术开发有限责任公司 Composite tooth

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