CN108115230A - The optimum design method of buttress thread connector incomplete thread part - Google Patents
The optimum design method of buttress thread connector incomplete thread part Download PDFInfo
- Publication number
- CN108115230A CN108115230A CN201711159051.9A CN201711159051A CN108115230A CN 108115230 A CN108115230 A CN 108115230A CN 201711159051 A CN201711159051 A CN 201711159051A CN 108115230 A CN108115230 A CN 108115230A
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- China
- Prior art keywords
- thread
- partially trapezoidal
- incomplete
- special
- screw thread
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G9/00—Working screws, bolt heads, or nuts in conjunction with thread cutting, e.g. slotting screw heads or shanks, removing burrs from screw heads or shanks; Finishing, e.g. polishing, any screw-thread
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Numerical Control (AREA)
Abstract
The invention discloses a kind of optimum design method of buttress thread connector incomplete thread part, step 1：1 is processed respectively according to conventional Screw thread process method:The partially trapezoidal male and female screw thread of 16 tapers；Step 2：Conventional deburring is carried out to partially trapezoidal box thread to handle；Step 3：The partially trapezoidal male thread that step 1 is processed is on another Cutting tool installation manner position, with special special tool under conditions of screw thread phase invariant is kept, by the track of processing cylindrical thread, re-starts a thread processing.Special special tool described in step 3 includes body, the edge of a knife being in contact with partially trapezoidal male thread top being arranged on body, and the edge of a knife is that the distance between symmetric, arc opening, the radian R of opening is half pitch.The beneficial effects of the invention are as follows：The male thread portion of pipe end can be without reconditioning, and the method being machined into processes the fillet of the tooth top of incomplete thread, and without burr.
Description
Technical field
The present invention relates to petroleum drilling technology field, more particularly to a kind of buttress thread connector incomplete thread part
Optimum design method.
Background technology
The petroleum casing pipe of buttress thread connection is the one kind for the screw thread that API (American Petroleum Institute (API)) is announced, and is had very long
History.There is more incomplete threads in the male thread according to the buttress thread of API 5B standards manufacture, this is because
To process phenomenon specific to tapered tread on cylindrical outer surface of tube body, and the partially trapezoidal box thread on box cupling
All it is complete thread, as shown in Figure 1.
Only there are one bases for estimation with incomplete thread for complete thread：Whether tooth top is deposited just like fillet as defined in tooth form figure
In, no fillet or fillet is incomplete is considered as incomplete thread, as shown in Figure 2.It can affirm, the tooth of incomplete thread is up to
Less than standard requirement, but this is allowed.
As shown in Figure 3, Figure 4, incomplete thread part has to pass through reconditioning often there are many burrs after processing screw thread,
Reconditioning work can not grind fillet, the feelings that the male thread of no fillet will certainly so be caused to be engaged with complete box thread
Condition.This is very harmful, and the box thread engaged with incomplete thread flank can be caused stress concentration and the box thread occur
Place's flank is scratched.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of optimization of buttress thread connector incomplete thread part
Design method can make the tooth top both sides of incomplete thread be respectively provided with the small round corner of R0.2-R0.3, while machine away imperfect
The burr of threaded top avoids partially trapezoidal male and female screw thread wedge angle, sharp side contact.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：A kind of buttress thread connector is imperfect
The optimum design method of threaded portion, step are as follows：Step 1：Numerically controlled lathe is opened, according to conventional Screw thread process method point
It does not process 1 as defined in API standard:The partially trapezoidal male and female screw thread of 16 tapers；Step 2：Step 1 is processed partially trapezoidal
Box thread carries out conventional deburring processing, and being disposed, it is spare to remove workpiece；Step 3：Step 1 is processed partially trapezoidal
Male thread is on another Cutting tool installation manner position, with special special tool under conditions of screw thread phase invariant is kept, by processing
The track of cylindrical thread re-starts a thread processing；Step 4：Completion of processing, it is spare to remove partially trapezoidal male thread workpiece,
Close numerically controlled lathe；Step 5：The partially trapezoidal male and female screw thread that step 2 and step 4 are processed carries out qualified examination.
Special special tool described in step 3 includes body, is arranged on connecting with partially trapezoidal male thread top on body
The tactile edge of a knife, the edge of a knife are symmetric, arc opening.
The distance between radian R of the symmetric, arc opening is half pitch；The radian R's of the arc-shaped opening
Scope is 0.2-0.3mm.
The beneficial effects of the invention are as follows：The male thread portion of pipe end can be without reconditioning, and the method being machined into is processed
Go out the fillet of the tooth top of incomplete thread, and without burr.
Description of the drawings
Fig. 1 is the complete thread part of the male thread of buttress thread and incomplete thread partial schematic diagram；
Fig. 2 is the enlarged diagram of incomplete thread；
Fig. 3 is the site of engagement schematic diagram of incomplete thread part；
Fig. 4 is the engagement enlarged diagram of incomplete thread part；
Fig. 5 is the imperfect partial schematic diagram for implementing technical scheme post-processing male thread；
Fig. 6 is the special tool in incomplete thread tooth top processing fillet.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and detailed description：
A kind of optimum design method of buttress thread connector incomplete thread part, step are as follows：Step 1：Open number
Lathe is controlled, is processed respectively 1 as defined in API standard according to conventional Screw thread process method:The partially trapezoidal male and female spiral shell of 16 tapers
Line；Step 2：Conventional deburring is carried out to the partially trapezoidal box thread that step 1 processes to handle, being disposed, it is standby to remove workpiece
With；Step 3：The partially trapezoidal male thread that step 1 is processed is protected on another Cutting tool installation manner position with special special tool
Under the conditions of holding the phase invariant of screw thread, by the track of processing cylindrical thread, a thread processing is re-started；Step 4：Processing
It finishes, it is spare to remove partially trapezoidal male thread workpiece, closes numerically controlled lathe.Step 5：Step 2 and step 4 are processed inclined
Trapezoidal male and female screw thread carries out qualified examination.
As shown in Figure 5, Figure 6, the special special tool described in step 3, body are equipped with and phase at the top of partially trapezoidal male thread
The edge of a knife of contact, the edge of a knife are a symmetric, arc opening.The distance between radian R of one symmetric, arc opening is half of spiral shell
Away from；The scope of the radian R of arc-shaped opening is 0.2-0.3mm.
The part of two contacts should avoid wedge angle, sharp side contact in being designed such as common mechanical as far as possible, with machinery
The method of processing makes the tooth top both sides of incomplete thread be respectively provided with the small round corner of R0.2-R0.3, while machines away imperfect spiral shell
Burr at the top of line.
Claims (3)
1. a kind of optimum design method of buttress thread connector incomplete thread part, step are as follows：
Step 1：Numerically controlled lathe is opened, is processed respectively 1 as defined in API standard according to conventional Screw thread process method:16 tapers
Partially trapezoidal male and female screw thread；
Step 2：Conventional deburring is carried out to the partially trapezoidal box thread that step 1 processes to handle, and is disposed and is removed workpiece
It is spare；
Step 3：The partially trapezoidal male thread that step 1 is processed is on another Cutting tool installation manner position, with special special tool
Under conditions of screw thread phase invariant is kept, by the track of processing cylindrical thread, a thread processing is re-started；
Step 4：Completion of processing, it is spare to remove partially trapezoidal male thread workpiece, closes numerically controlled lathe.
Step 5：The partially trapezoidal male and female screw thread that step 2 and step 4 are processed carries out qualified examination.
2. a kind of optimum design method of buttress thread connector incomplete thread part according to claim 1, special
Sign is：Special special tool described in step 3 includes body, is arranged on being in contact with partially trapezoidal male thread top on body
The edge of a knife, the edge of a knife be symmetric, arc opening.
3. a kind of optimum design method of buttress thread connector incomplete thread part according to claim 2, special
Sign is：The distance between radian R of the symmetric, arc opening is half pitch；The model of the radian R of the arc-shaped opening
It is 0.2-0.3mm to enclose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711159051.9A CN108115230A (en) | 2017-11-20 | 2017-11-20 | The optimum design method of buttress thread connector incomplete thread part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711159051.9A CN108115230A (en) | 2017-11-20 | 2017-11-20 | The optimum design method of buttress thread connector incomplete thread part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108115230A true CN108115230A (en) | 2018-06-05 |
Family
ID=62227860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711159051.9A Pending CN108115230A (en) | 2017-11-20 | 2017-11-20 | The optimum design method of buttress thread connector incomplete thread part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108115230A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108971669A (en) * | 2018-07-26 | 2018-12-11 | 湘潭大学 | Track optimizing method is cut in a kind of helical milling of tapered tread hole |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10040134A1 (en) * | 2000-08-12 | 2002-02-28 | Uwe Schwencke | Wooden nut and bolt for assembling uprights and cross-bars in shelf systems have trapezium-shaped threads, ratio of diameter of core of the bolt to diameter of thread being within specified limits |
| CN201288903Y (en) * | 2008-09-28 | 2009-08-12 | 上海海隆石油管材研究所 | Oil sleeve screwed connection head of negative bearing angle |
| CN101696621A (en) * | 2009-11-04 | 2010-04-21 | 天津钢管集团股份有限公司 | Air-tight seal screw joint |
| CN103619522A (en) * | 2011-08-25 | 2014-03-05 | 理光越岭美有限公司 | Screw thread manufacturing method and screw thread |
| CN104084653A (en) * | 2014-06-30 | 2014-10-08 | 山东墨龙石油机械股份有限公司 | Removing method for thread burrs |
-
2017
- 2017-11-20 CN CN201711159051.9A patent/CN108115230A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10040134A1 (en) * | 2000-08-12 | 2002-02-28 | Uwe Schwencke | Wooden nut and bolt for assembling uprights and cross-bars in shelf systems have trapezium-shaped threads, ratio of diameter of core of the bolt to diameter of thread being within specified limits |
| CN201288903Y (en) * | 2008-09-28 | 2009-08-12 | 上海海隆石油管材研究所 | Oil sleeve screwed connection head of negative bearing angle |
| CN101696621A (en) * | 2009-11-04 | 2010-04-21 | 天津钢管集团股份有限公司 | Air-tight seal screw joint |
| CN103619522A (en) * | 2011-08-25 | 2014-03-05 | 理光越岭美有限公司 | Screw thread manufacturing method and screw thread |
| CN104084653A (en) * | 2014-06-30 | 2014-10-08 | 山东墨龙石油机械股份有限公司 | Removing method for thread burrs |
Non-Patent Citations (1)
| Title |
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| 田青超: "《抗挤毁套管产品开发-理论和实践》", 30 June 2013, 冶金工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108971669A (en) * | 2018-07-26 | 2018-12-11 | 湘潭大学 | Track optimizing method is cut in a kind of helical milling of tapered tread hole |
| CN108971669B (en) * | 2018-07-26 | 2020-05-08 | 湘潭大学 | Optimization method for helical milling cut-in trajectory of conical threaded hole |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190628 Address after: No. 396 Jintang Highway, Dongli District, Tianjin 300301 Applicant after: Tianjin Steel Tube Manufacturing Co., Ltd. Address before: No. 396 Jintang Highway, Dongli District, Tianjin 300301 Applicant before: Tianjin Steel Pipe Group Co., Ltd. |
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| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180605 |
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| RJ01 | Rejection of invention patent application after publication |