CN204366209U - A kind of air-tight seal screw joint external screw thread processing blade - Google Patents
A kind of air-tight seal screw joint external screw thread processing blade Download PDFInfo
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- CN204366209U CN204366209U CN201420863232.5U CN201420863232U CN204366209U CN 204366209 U CN204366209 U CN 204366209U CN 201420863232 U CN201420863232 U CN 201420863232U CN 204366209 U CN204366209 U CN 204366209U
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Abstract
The utility model discloses a kind of air-tight seal screw joint external screw thread processing blade, relate to sealing gland external screw thread machining tool technical field, comprise cutter hub, cutter hub is with cutting side with without cutting teeth side, cutting side is provided with incomplete thread cutting teeth and complete thread cutting teeth, complete thread cutting teeth comprises tooth top and cuts circular arc, gear side-cutting face, circular arc is cut in tooth undercutting, incomplete thread cutting teeth comprises tooth top and cuts circular arc, gear side-cutting face and tooth undercutting bevel, the angle a in tooth undercutting bevel and machining direction is 10 ° to 15 °, the tooth depth of incomplete thread cutting teeth is all lower than the tooth depth of complete thread cutting teeth.The external screw thread tensile property utilizing this blade to process is good, and increase the sealing property of joint and anti-stick button performance, the wear rate of cutting teeth is low, improves mill and cuts quality.
Description
Technical field
The utility model relates to sealing gland external screw thread machining tool technical field.
Background technology
Along with the deep development of petroleum gas, there is the present situation of low pressure, hypotonic, low yield in Central China, western oilfield prospecting developing, and anisotropism is strong, and well yield is low, and reducing Well Development cost is the key that this gas field obtains economic benefit.Only select economy, reliably high-quality sleeve pipe, reduce development cost, just can produce huge economic benefit.Sleeve pipe cost comprises body material and nipple two aspect, the one-tenth instinct of API nipple accounts for nearly 1/3 of sleeve pipe cost, Special threading connector is generally by screw thread, sealing surface and sealing shoulder composition, processing price costly, and the Special threading connector of different manufacturers cannot exchange, being connected with downhole tool needs crossover sub, causes waste and increases execute-in-place difficulty.API round thread adds that the sealability of regular screw threads fat to gas well natural gas is limited, there is the danger of leakage under the effect of combined load, and in the process of machining screw processing blades well damage, service life is lower.
For the problems referred to above, now provide a kind of external screw thread processing blade, the external screw thread utilizing this blade to process can solve the problem, and the service life of blade is longer.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of air-tight seal screw joint external screw thread processing blade, the external screw thread tensile property utilizing this blade to process is good, increase the sealing property of joint and anti-stick button performance, the wear rate of cutting teeth is low, improves mill and cuts quality.
For solving the problem, technical solution adopted in the utility model is a kind of air-tight seal screw joint external screw thread processing blade, comprise cutter hub, described cutter hub cuts side and three without cutting teeth side with one, cutting side is provided with multiple incomplete thread cutting teeth and at least one complete thread cutting teeth from front to back successively along machining direction, described complete thread cutting teeth comprises tooth top and cuts circular arc, gear side-cutting face, circular arc is cut in tooth undercutting, circular sliding slopes is cut by tooth top between adjacent complete thread cutting teeth and incomplete thread cutting teeth, described incomplete thread cutting teeth comprises tooth top and cuts circular arc, gear side-cutting face and tooth undercutting bevel, also circular sliding slopes is cut by tooth top between two adjacent incomplete thread cutting teeths, the angle a in described tooth undercutting bevel and machining direction is 10 ° to 15 °, the tooth undercutting bevel of multiple incomplete thread cutting teeth and the angle even variation from big to small in machining direction from front to back along machining direction, the tooth depth h2 of described incomplete thread cutting teeth is all lower than the tooth depth h1 of complete thread cutting teeth, the tooth depth h2 even variation from small to large of multiple incomplete thread cutting teeth from front to back along machining direction, the angle b that the perpendicular cutter hub axis direction in circular arc top and machining direction is cut in described tooth undercutting bevel and tooth undercutting is 5 ° ~ 9 °.
Preferably, the radius that circular arc is cut in described tooth undercutting is 0.37mm ~ 0.42mm, and it is 0.39mm ~ 0.44mm that tooth top cuts arc radius, and the tooth depth h1 of described complete thread cutting teeth is 1.45mm ~ 2.25mm.
Preferably, on machining direction, incomplete thread cutting teeth is foremost connected with without cutting teeth side by inclined plane, and the angle c in described inclined plane and machining direction is 5 ° to 10 °.
Preferably, cutter hub is also provided with the knife bar installing hole for being fixedly connected with tool holder of lathe.
The beneficial effect adopting technique scheme to produce is: the external screw thread 1, utilizing this blade to process, compared with API round thread, increases the height of screw chasing tooth, increases tooth depth, and then improves the tensile property of joint; 2, optimize the arc radius at the bottom of tooth top tooth, reduce screw thread and twist gap at the bottom of the tooth top tooth after connecing, increase the sealing property of joint and anti-stick button performance; 3, this blade is with multiple incomplete thread cutting teeth and complete thread cutting teeth, be used in conjunction with each other, avoid and with complete screw chasing tooth, the rigid size mill that tube wall carries out standard is cut at the very start, the wear rate of screw chasing tooth can be reduced, improve that quality 4 cut by mill, incomplete thread cutting teeth is foremost connected by inclined plane with without between cutting teeth side, inclined plane and need process between tube wall and have certain gap, can avoid producing with tube wall when processing at the beginning and rub and damage the bright and clean degree on tube wall surface.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 structural representation of the present utility model;
Fig. 2 is the partial structurtes schematic diagram of Fig. 1;
Fig. 3 is the side view of Fig. 1.
Wherein, 1, cutter hub, 2, cut side, 3, without cutting teeth side, 4, incomplete thread cutting teeth, 5, complete thread cutting teeth, 6, tooth top cuts circular arc, 7, gear side-cutting face, 8, circular arc is cut in tooth undercutting, and 9, tooth undercutting bevel, 10, inclined plane, 11, knife bar installing hole.
Detailed description of the invention
As Fig. 1, Fig. 2, shown in Fig. 3: a kind of air-tight seal screw joint external screw thread processing blade, comprise cutter hub 1, described cutter hub 1 cuts side 2 and three without cutting teeth side 3 with one, cutting side 2 is provided with multiple incomplete thread cutting teeths 4 and at least one complete thread cutting teeth 5 from front to back successively along machining direction, described complete thread cutting teeth 5 comprises tooth top and cuts circular arc 6, gear side-cutting face 7, circular arc 8 is cut in tooth undercutting, cut circular arc 6 by tooth top between adjacent complete thread cutting teeth 5 and incomplete thread cutting teeth 4 to connect, described incomplete thread cutting teeth 4 comprises tooth top and cuts circular arc 6, gear side-cutting face 7 and tooth undercutting bevel 9, also cut circular arc 6 by tooth top between two adjacent incomplete thread cutting teeths 4 to connect, described tooth undercutting bevel 9 is 10 ° to 15 ° with the angle a in machining direction, the tooth undercutting bevel 9 of multiple incomplete thread cutting teeth 4 and the angle even variation from big to small in machining direction from front to back along machining direction, the tooth depth h2 of described incomplete thread cutting teeth 4 is all lower than the tooth depth h1 of complete thread cutting teeth 5, the tooth depth h2 even variation from small to large of multiple incomplete thread cutting teeth 4 from front to back along machining direction, the angle b that perpendicular cutter hub 1 axis direction in circular arc 8 top and machining direction is cut in described tooth undercutting bevel 9 and tooth undercutting is 5 ° ~ 9 °, namely tooth undercutting bevel 9 is 10 ° to 15 ° with the angle a in machining direction, and be 5 ° to 9 ° with the angle b of cutter hub 1 axis direction.As shown in Figure 2, tooth depth h1 is the distance that tooth top cuts that circular arc 6 cuts circular arc 8 top to tooth undercutting, and tooth depth h2 is that tooth top cuts the distance of circular arc 6 to tooth undercutting bevel 9 top.
As shown in Figure 1, in figure, the direction of arrow is the moving direction of this blade when processing, i.e. machining direction, the body of processing is needed constantly to rotate in blade side, knife bar installing hole 11 is utilized to be connected with tool holder of lathe, then the screw chasing tooth on blade is carried out mill to the outer wall of body to cut, as seen from the figure along machine direction, be followed successively by multiple incomplete thread cutting teeth 4 and complete thread cutting teeth 5 from front to back, and but the tooth depth h2 of incomplete thread cutting teeth 4 becomes large is gradually less than the height of tooth depth h1 all the time, angle a diminishes gradually, but excursion is between 10 ° to 15 °, the diminish volume at namely incomplete thread cutting teeth 4 top of angle a becomes large gradually.In the process of cutting, what tooth top cut that circular arc 6 processes is externally threaded tooth top, tooth undercutting cuts that circular arc 8 processes is at the bottom of externally threaded tooth, and what gear side-cutting face 7 processed is external screw thread tooth top and the joint face at the bottom of tooth.
The radius that circular arc 8 is cut in tooth undercutting is 0.37mm ~ 0.42mm, and it is 0.39mm ~ 0.44mm that tooth top cuts circular arc 6 radius, and the tooth depth h1 of described complete thread cutting teeth 5 is 1.45mm ~ 2.25mm.On machining direction, incomplete thread cutting teeth 4 is foremost connected with without cutting teeth side 3 by inclined plane 10, described inclined plane 10 is 5 ° to 10 ° with the angle c in machining direction, and cutter hub 1 is also provided with the knife bar installing hole 11 for being fixedly connected with tool holder of lathe.
In order to the service life making screw chasing tooth increase screw chasing tooth in the process of cutting, spy devises multiple incomplete thread cutting teeth 4 in the front end of machine direction, in process, what first participate in processing is that namely tooth depth h2 is minimum foremost, and the incomplete thread cutting teeth 4 that tooth undercutting bevel 9 is maximum with the angle a in machining direction, because tooth depth is little, angle is large, it is less that it cuts degree to the mill of tube wall, that the preliminary mill of tube wall is cut, do not reach the standard thread degree of grinding and cutting tube wall and will reach, second the incomplete thread cutting teeth 4 being close to incomplete thread cutting teeth 4 foremost subsequently carries out mill and cuts, tooth depth h2 due to second incomplete thread cutting teeth 4 is greater than previous tooth depth, and angle a is less, cut so the polishing scratch that can stay on tube wall previous incomplete thread cutting teeth 4 carries out darker mill once, repeat aforesaid operations, until complete thread cutting teeth 5 pairs of tube walls are processed, finally obtain the mill chasing of standard, because tooth depth h2 and angle a is even gradual change, progressively procedure is achieved relative to other this blade of Cutting blade for machining screw thread, avoid and cut with the rigid size mill that complete screw chasing tooth 5 pairs of tube walls carry out standard at the very start, the wear rate of screw chasing tooth can be reduced, improve mill and cut quality, incomplete thread cutting teeth 4 is foremost connected by inclined plane 10 with without between cutting teeth side 3, there is certain gap between inclined plane 10 and tube wall, can avoiding producing with tube wall when processing at the beginning rubbing and damaging the bright and clean degree on tube wall surface.
In sum, 1, the external screw thread that utilizes this blade to process compared with API round thread, increase the height of screw chasing tooth, increase tooth depth, and then improve the tensile property of joint; 2, optimize the arc radius at the bottom of tooth top tooth, reduce screw thread and twist gap at the bottom of the tooth top tooth after connecing, increase the sealing property of joint and anti-stick button performance; 3, this blade is with multiple incomplete thread cutting teeth and complete thread cutting teeth, be used in conjunction with each other, avoid and with complete screw chasing tooth, the rigid size mill that tube wall carries out standard is cut at the very start, the wear rate of cutting teeth can be reduced, improve that quality 4 cut by mill, incomplete thread cutting teeth is foremost connected by inclined plane with without between cutting teeth side, there is certain gap between inclined plane and the tube wall that need process, can avoiding producing with tube wall when processing at the beginning rubbing and damaging the bright and clean degree on tube wall surface.
Claims (4)
1. an air-tight seal screw joint external screw thread processing blade, it is characterized in that: comprise cutter hub (1), described cutter hub (1) with one cut side (2) and three without cutting teeth side (3), cutting side (2) is provided with multiple incomplete thread cutting teeth (4) and at least one complete thread cutting teeth (5) from front to back successively along machining direction, described complete thread cutting teeth (5) comprises tooth top and cuts circular arc (6), gear side-cutting face (7), circular arc (8) is cut in tooth undercutting, cut circular arc (6) by tooth top between adjacent complete thread cutting teeth (5) and incomplete thread cutting teeth (4) to connect, described incomplete thread cutting teeth (4) comprises tooth top and cuts circular arc (6), gear side-cutting face (7) and tooth undercutting bevel (9), also cut circular arc (6) by tooth top between two adjacent incomplete thread cutting teeths (4) to connect, described tooth undercutting bevel (9) is 10 ° to 15 ° with the angle a in machining direction, the tooth undercutting bevel (9) of multiple incomplete thread cutting teeth (4) and the angle even variation from big to small in machining direction from front to back along machining direction, the tooth depth h2 of described incomplete thread cutting teeth (4) is all lower than the tooth depth h1 of complete thread cutting teeth (5), the tooth depth h2 even variation from small to large of multiple incomplete thread cutting teeth (4) from front to back along machining direction, the angle b that perpendicular cutter hub (1) axis direction in circular arc (8) top and machining direction is cut in described tooth undercutting bevel (9) and tooth undercutting is 5 ° ~ 9 °.
2. a kind of air-tight seal screw joint external screw thread processing blade according to claim 1, it is characterized in that: the radius that circular arc (8) is cut in described tooth undercutting is 0.37mm ~ 0.42mm, it is 0.39mm ~ 0.44mm that tooth top cuts circular arc (6) radius, and the tooth depth h1 of described complete thread cutting teeth (5) is 1.45mm ~ 2.25mm.
3. a kind of air-tight seal screw joint external screw thread processing blade according to claim 2, it is characterized in that: on machining direction, incomplete thread cutting teeth (4) is foremost connected with without cutting teeth side (3) by inclined plane (10), described inclined plane (10) is 5 ° to 10 ° with the angle c in machining direction.
4. a kind of air-tight seal screw joint external screw thread processing blade according to claim 3, is characterized in that: on cutter hub (1), be also provided with the knife bar installing hole (11) for being fixedly connected with tool holder of lathe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420863232.5U CN204366209U (en) | 2014-12-31 | 2014-12-31 | A kind of air-tight seal screw joint external screw thread processing blade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420863232.5U CN204366209U (en) | 2014-12-31 | 2014-12-31 | A kind of air-tight seal screw joint external screw thread processing blade |
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| CN204366209U true CN204366209U (en) | 2015-06-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401494A (en) * | 2016-11-28 | 2017-02-15 | 无锡金顶石油管材配件制造有限公司 | Coupling for preventing blockage of petroleum pipelines |
| CN110695272A (en) * | 2019-10-11 | 2020-01-17 | 江苏森林建筑新材料股份有限公司 | Thread rolling wheel suitable for concrete reinforcing steel bar |
-
2014
- 2014-12-31 CN CN201420863232.5U patent/CN204366209U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401494A (en) * | 2016-11-28 | 2017-02-15 | 无锡金顶石油管材配件制造有限公司 | Coupling for preventing blockage of petroleum pipelines |
| CN110695272A (en) * | 2019-10-11 | 2020-01-17 | 江苏森林建筑新材料股份有限公司 | Thread rolling wheel suitable for concrete reinforcing steel bar |
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