CN202169423U - Cutter for processing and shaping a special thread of an oil sleeve joint - Google Patents
Cutter for processing and shaping a special thread of an oil sleeve joint Download PDFInfo
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- CN202169423U CN202169423U CN 201120268983 CN201120268983U CN202169423U CN 202169423 U CN202169423 U CN 202169423U CN 201120268983 CN201120268983 CN 201120268983 CN 201120268983 U CN201120268983 U CN 201120268983U CN 202169423 U CN202169423 U CN 202169423U
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- basal plane
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Abstract
The utility model relates to a cutter for processing and shaping a special thread of an oil sleeve joint, comprising an external thread cutter blade and an internal thread cutter blade, wherein a center hole, three mounting base surfaces and three fixation grooves are arranged on the external thread cutter blade and the internal thread cutter blade, one cutting cutter head is respectively arranged on the outer edges of the fixation grooves, the direction of the cutting cutter head on the external thread cutter blade is opposite to the direction of the cutting cutter head on the internal thread cutter blade, the cutting cutter head is composed of a barb surface, a cutter head top surface, a base surface and a guide surface, the conicity of the cutter head top surface and the base surface of the cutting cutter head is zero, the length of the cutter head top surface is 2.565-3.20mm, the barb surface is -2 degree, the guide surface is 20degree, the arc radius of the connection position of the barb surface and the cutter head top surface is 0.17-0.20mm, the arc radius of the connection position of the barb surface and the base surface is 0.80-0.83mm, the height different between the base surfaces on the barb surface and the guide surface is 0.182-0.265mm. The cutter has relative strong pertinency and practicability.
Description
Technical field
The utility model belongs to screw thread machine-shaping field; It specifically is a kind of cutter that is used for the machine-shaping of oil sleeve joint special thread; It is particularly suitable for the special thread of oil sleeve joint is processed; Also be suitable for other oil sleeve joint special thread is processed, for example screen casing, packer, extension hanger and all kinds of pipe nipples etc.
Background technology
Along with the development of oil and gas exploration to complex hydrocarbon well fields such as deep-well, ultradeep wells; The oil pipe of common API screw thread, sleeve pipe can not satisfy harsh more oil gas well working condition to be used, and adopts oil pipe, the sleeve pipe of special thread joint to use more and more widely.Because special thread has carried out optimal design aspect helicitic texture and sealing property; The tubing and casing of special thread joint has higher bonding strength, gas tightness, torque resistant property, bending resistance, anticorrosion stress-resistant property and high temperature creep-resisting property, and its serviceability obviously is superior to the tubing and casing of common API screw thread.
At present, the used special thread joint kind of tubing and casing has kind more than 100 in the world, and practical application has kind more than 10 more widely, such as serial special threads such as V&M, Hydril, Hunting and Tenaris.In recent years; Domestic special thread joint technology has also obtained greatly developing; Baosteel, day steel, Wuxi Lyceum Lay this, climb into domestic enterprises such as steel, magnificent water chestnut weighing apparatus steel and all developed special thread series with independent intellectual property right, and each elephant is applied at home.But, because China special thread processing enterprise design basis is weak, lack corresponding machine-shaping cutter, make the special thread joint performance of producing than also there being certain gap abroad.Special thread is a product that technology content is very high; Machine-shaping cutter requirement to special use is very high, and difficulty of processing is big, and the design of special thread joint and process technology still belong to business secret; External major company is externally highly confidential always; To China's long-term implementation blockade on new techniques, make each domestic elephant have to rely on them, the price of expensive is to its imported product.
Summary of the invention
The purpose of the utility model is: to the deficiency of above-mentioned prior art; A kind of cutter that is used for the machine-shaping of oil sleeve joint special thread is provided; Through development test repeatedly; Parameter to this each face of Tool in Cutting cutter head has been carried out optimal design; The special thread that processes is adhered to specification at thread parameters such as tooth form, tooth depth, tapering, pitch, loading end angle and spigot surface angles, thereby make the oil sleeve joint that processes have bonding strength, gas tightness, torque resistant property, anti-outer property, anti-interior pressure property, bending resistance, anticorrosion stress-resistant property and the high temperature creep-resisting property of squeezing of excellence.
The technical scheme that the utility model adopts is: a kind of cutter that is used for the machine-shaping of oil sleeve joint special thread; Comprise external screw thread blade and internal thread blade, external screw thread blade and internal thread blade are provided with centre bore, are mutually three installation base surfaces and three holddown grooves of 60o, and the extended line angle of three holddown grooves is 60 °; Outer edge at holddown groove has a cutter tip respectively; Cutter tip on cutter tip on the external screw thread blade and the internal thread blade is in the opposite direction, and said cutter tip is made up of barb face, head top surface, basal plane and spigot surface, and the head top surface of said cutter tip and the tapering of basal plane are zero; The length of head top surface is 2.565～3.20mm; The barb face is negative 2 °, and spigot surface is 20 °, and the junction arc radius of barb face and head top surface is 0.17～0.20mm; The junction arc radius of barb face and basal plane is 0.23～0.26mm; The junction arc radius of spigot surface and head top surface is 0.73～0.76mm, and the junction arc radius of spigot surface and basal plane is 0.80～0.83mm, and the difference in height between barb face place's basal plane and the spigot surface place basal plane is 0.182～0.265mm.
The head top surface height of said external screw thread blade is 1.5～1.8mm; The head top surface height of said internal thread blade is 1.65～1.9mm.
Have difference in height between said barb face place's basal plane and the spigot surface place basal plane, the thread taper that processes is 1:14～1:12.
Said centre bore is a pyramidal structure.
The beneficial effect of the utility model is: the special thread that this special thread machine-shaping cutter processes is per inch 4 teeth or 5 teeth; Be parallel to the body axis at the bottom of crest and the tooth; Radial stress is evenly distributed, and is stepped between at the bottom of each tooth, forms thread taper; Screw thread have excellent bonding strength, gas tightness, torque resistant property, anti-outer squeeze property, anti-in pressure property, bending resistance, anticorrosion stress-resistant property and high temperature creep-resisting property, and go up shackle convenient, be difficult for thread gluing.
Description of drawings
Fig. 1 is the external screw thread blade structure sketch map of the utility model.
Fig. 2 is the internal thread blade structure sketch map of the utility model.
Code name implication among the figure: 1-centre bore; 2-installation base surface; 3-holddown groove; 4-cutter tip; 5-barb face; 6-head top surface; 7,8-basal plane; 9-spigot surface; A-external screw thread blade; B-internal thread blade.
The specific embodiment
Referring to Fig. 1 and Fig. 2: the utility model is further described below in conjunction with accompanying drawing.
Embodiment one
The utility model is 5.08mm with processing pitch, and promptly the cutter of per inch 5 tooth special threads is an example.
The utility model comprises external screw thread blade A and internal thread blade B; Be respectively equipped with the centre bore 1 of an installing and locating on external screw thread blade A and the internal thread blade B; Centre bore 1 is a pyramidal structure; Be used for external screw thread blade A or internal thread blade B installing and locating on the lathe tool rest, this installing and locating mode is easy and simple to handle, accurate positioning, installation are firm.Have respectively on external screw thread blade A and the internal thread blade B between 2, three installation base surfaces 2 of three installation base surfaces and be mutually 60 ° each other.Be respectively equipped with three holddown grooves 3 on external screw thread blade A and the internal thread blade B; The extended line angle of three holddown grooves 3 is 60 °; Outer edge at holddown groove 3 has a cutter tip 4 respectively; Cutter tip on cutter tip on the external screw thread blade A and the internal thread blade B is in the opposite direction, and the cutter tip direction of Cutting blade for machining screw thread is an ordinary skill well known to those skilled in the art, repeats no more at this.
Cutter tip on cutter tip on the external screw thread blade A and the internal thread blade B is in the opposite direction, and the head top surface height on the external screw thread blade A is 1.50mm, and the head top surface height on the internal thread blade B is 1.65mm.In addition, external screw thread blade A is identical with other structure of internal thread blade B.Be that cutter tip 4 is made up of barb face 5, head top surface 6, basal plane (7,8) and spigot surface 9; The head top surface 6 of cutter tip 4 and basal plane (7,8) are parallel to each other, and the tapering between them is zero, and the length of head top surface 6 is 2.565mm; The tapering that forms between the basal plane 8 of the basal plane 7 of barb face 5 these sides and spigot surface 9 those sides is 1:14; Barb face 5 is negative 2 °, and spigot surface 9 is 20 °, and barb face 5 is 0.17mm with the junction arc radius of head top surface 6; Barb face 5 is 0.26mm with the junction arc radius of basal plane 7; Spigot surface 9 is 0.76mm with the junction arc radius of head top surface 6, and spigot surface 9 is 0.83mm with the junction arc radius of basal plane 8, and the difference in height between the basal plane 8 of the basal plane 7 of barb face 5 these sides and spigot surface 9 those sides is 0.182mm.
Embodiment two
The utility model is 6.35mm with processing pitch, and promptly to should be the cutter of 4 tooth special threads be example to per inch.
The utility model comprises external screw thread blade A and internal thread blade B; Be respectively equipped with the centre bore 1 of an installing and locating on external screw thread blade A and the internal thread blade B; Centre bore 1 is a pyramidal structure; Be used for external screw thread blade A or internal thread blade B installing and locating on the lathe tool rest, this installing and locating mode is easy and simple to handle, accurate positioning, installation are firm.Have respectively on external screw thread blade A and the internal thread blade B between 2, three installation base surfaces 2 of three installation base surfaces and be mutually 60 ° each other.Be respectively equipped with three holddown grooves 3 on external screw thread blade A and the internal thread blade B; The extended line angle of three holddown grooves 3 is 60 °; Outer edge at holddown groove 3 has a cutter tip 4 respectively; Cutter tip on cutter tip on the external screw thread blade A and the internal thread blade B is in the opposite direction, and the cutter tip direction of Cutting blade for machining screw thread is an ordinary skill well known to those skilled in the art, repeats no more at this.
Cutter tip on cutter tip on the external screw thread blade A and the internal thread blade B is in the opposite direction, and the head top surface height on the external screw thread blade A is 1.80mm, and the head top surface height on the internal thread blade B is 1.90mm.In addition, external screw thread blade A is identical with other structure of internal thread blade B.Be that cutter tip 4 is made up of barb face 5, head top surface 6, basal plane (7,8) and spigot surface 9; The head top surface 6 of cutter tip 4 and basal plane (7,8) are parallel to each other, and the tapering between them is zero, and the length of head top surface 6 is 3.20mm; The tapering that forms between the basal plane 8 of the basal plane 7 of barb face 5 these sides and spigot surface 9 those sides is 1:12; Barb face 5 is negative 2 °, and spigot surface 9 is 20 °, and barb face 5 is 0.20mm with the junction arc radius of head top surface 6; Barb face 5 is 0.23mm with the junction arc radius of basal plane 7; Spigot surface 9 is 0.76mm with the junction arc radius of head top surface 6, and spigot surface 9 is 0.80mm with the junction arc radius of basal plane 8, and the difference in height between the basal plane 8 of the basal plane 7 of barb face 5 these sides and spigot surface 9 those sides is 0.265mm.
The utility model after first cutter tip machining screw wearing and tearing of external screw thread blade A or internal thread blade B, rotates 120 ° with external screw thread blade or internal thread blade in use, carries out screw thread processing with second cutter tip; After second cutter tip machining screw also worn and torn, again external screw thread blade A or internal thread blade B are rotated 120 °, carry out screw thread processing with the 3rd cutter tip.The utility model is making its three times following service life with conventional blade in the situation of equal volume, and is more economical, practical.
Claims (4)
1. cutter that is used for the machine-shaping of oil sleeve joint special thread; Comprise external screw thread blade (A) and internal thread blade (B); External screw thread blade (A) and internal thread blade (B) are provided with centre bore (1), are mutually three installation base surfaces (2) and three holddown grooves (3) of 60o; The extended line angle of three holddown grooves (3) is 60 °; Outer edge at holddown groove (3) has a cutter tip (4) respectively; Cutter tip on cutter tip on the external screw thread blade (A) and the internal thread blade (B) is in the opposite direction, and said cutter tip (4) is made up of barb face (5), head top surface (6), basal plane (7,8) and spigot surface (9), it is characterized in that: the tapering of the head top surface (6) of said cutter tip (4) and basal plane (7,8) is zero; The length of head top surface (6) is 2.565～3.20mm; Barb face (5) is negative 2 °, and spigot surface (9) is 20 °, and barb face (5) is 0.17～0.20mm with the junction arc radius of head top surface (6); Barb face (5) is 0.23～0.26mm with the junction arc radius of basal plane (7); The junction arc radius of spigot surface (9) and head top surface (6) is 0.73～0.76mm, and spigot surface (9) is 0.80～0.83mm with the junction arc radius of basal plane (8), and it is 0.182～0.265mm that barb face (5) is located the difference in height that basal plane (7) and spigot surface (9) locate between the basal plane (8).
2. according to the said cutter that is used for the machine-shaping of oil sleeve joint special thread of claim 1, it is characterized in that: the head top surface (6) of said external screw thread blade (A) highly is 1.5～1.8mm; The head top surface (6) of said internal thread blade (B) highly is 1.65～1.9mm.
3. according to the said cutter that is used for the machine-shaping of oil sleeve joint special thread of claim 1; It is characterized in that: said barb face (5) locates basal plane (7) and spigot surface (9) is located to have difference in height between the basal plane (8), and the thread taper that processes is 1:14～1:12.
4. according to the said cutter that is used for the machine-shaping of oil sleeve joint special thread of claim 1, it is characterized in that: said centre bore (1) is pyramidal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120268983 CN202169423U (en) | 2011-07-27 | 2011-07-27 | Cutter for processing and shaping a special thread of an oil sleeve joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120268983 CN202169423U (en) | 2011-07-27 | 2011-07-27 | Cutter for processing and shaping a special thread of an oil sleeve joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202169423U true CN202169423U (en) | 2012-03-21 |
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ID=45827628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120268983 Expired - Fee Related CN202169423U (en) | 2011-07-27 | 2011-07-27 | Cutter for processing and shaping a special thread of an oil sleeve joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202169423U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028858A (en) * | 2014-05-22 | 2014-09-10 | 中国石油集团石油管工程技术研究院 | Alloy blade for machining internal threads of sealing screwed joint |
| CN110802285A (en) * | 2019-10-30 | 2020-02-18 | 澳普洛钻探工具(无锡)有限公司 | Cutter is used in production of leakproofness drilling rod external screw thread |
| CN111136350A (en) * | 2019-10-30 | 2020-05-12 | 澳普洛钻探工具(无锡)有限公司 | Cutter is used in production of leakproofness drilling rod internal thread |
| CN111266675A (en) * | 2020-03-05 | 2020-06-12 | 中国石油天然气集团有限公司 | Machining method of wedge-shaped threaded oil casing joint |
-
2011
- 2011-07-27 CN CN 201120268983 patent/CN202169423U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028858A (en) * | 2014-05-22 | 2014-09-10 | 中国石油集团石油管工程技术研究院 | Alloy blade for machining internal threads of sealing screwed joint |
| CN110802285A (en) * | 2019-10-30 | 2020-02-18 | 澳普洛钻探工具(无锡)有限公司 | Cutter is used in production of leakproofness drilling rod external screw thread |
| CN111136350A (en) * | 2019-10-30 | 2020-05-12 | 澳普洛钻探工具(无锡)有限公司 | Cutter is used in production of leakproofness drilling rod internal thread |
| CN111266675A (en) * | 2020-03-05 | 2020-06-12 | 中国石油天然气集团有限公司 | Machining method of wedge-shaped threaded oil casing joint |
| CN111266675B (en) * | 2020-03-05 | 2021-06-25 | 中国石油天然气集团有限公司 | Machining method of wedge-shaped threaded oil casing joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yuan Zhonghua Inventor after: Zeng Huayong Inventor after: Liao Ling Inventor after: Ye Dingpeng Inventor after: Zhang Xiangguo Inventor after: Wu Yuxin Inventor after: Liu Zunping Inventor after: Chen Xianfu Inventor after: Zhang Xiaoping Inventor after: Chen Mei Inventor before: Yuan Zhonghua Inventor before: Liao Ling Inventor before: Ye Dingpeng |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: YUAN ZHONGHUA LIAO LING YE DINGPENG TO: YUAN ZHONGHUA LIAO LING YE DINGPENG ZHANG XIANGGUO WU YUXIN LIU ZUNPING CHEN XIANFU ZHANG XIAOPING CHEN MEI CENG HUAYONG |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120321 Termination date: 20130727 |