CN101619740A - Method for reinforcing thread hole strength of engineering material matrix with low strength and self-locking thread sleeve - Google Patents
Method for reinforcing thread hole strength of engineering material matrix with low strength and self-locking thread sleeve Download PDFInfo
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- CN101619740A CN101619740A CN200910301761A CN200910301761A CN101619740A CN 101619740 A CN101619740 A CN 101619740A CN 200910301761 A CN200910301761 A CN 200910301761A CN 200910301761 A CN200910301761 A CN 200910301761A CN 101619740 A CN101619740 A CN 101619740A
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- swivel nut
- thread
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- engineering material
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Abstract
The invention discloses a method for reinforcing the thread hole strength of an engineering material matrix with low strength and a self-locking thread sleeve. The method comprises the following steps: rotation preventing saw teeth are manufactured on the outer column surface of one end of a thread sleeve with an external thread hole and an internal thread hole; the thread sleeve is screwed into the thread holes of an engineering material matrix with low strength in a thread connecting way; after the thread sleeve is completely screwed into the thread holes of the engineering material matrix with low strength, the thread sleeve hole at one end of the thread sleeve with the rotation preventing saw teeth is expanded in a stamping die pressurization way, and the rotation preventing saw teeth on the thread sleeve are embedded into the matrix, therefore, the thread sleeve and the matrix are connected into a whole to achieve the aim for reinforcing the thread hole of the engineering material matrix with low strength. The thread sleeve and the matrix can be reliably connected into a whole by just processing external threads of the thread sleeve into common threads. The invention not only has the advantages of reliable connection with matrix and difficult looseness, but also has the advantages of easy processing, low manufacture cost, convenient assembly, and the like and can improve the assembling efficiency.
Description
Technical field
The present invention relates to a kind of method and self-locking thread insert that strengthens low-intensity engineering material matrix tapped hole intensity, belong to the technical field that is threaded.
Background technique
At present, in the prior art in order to strengthen the intensity of low-intensity engineering material matrix tapped hole, general all the employing installed a swivel nut mode that has internal and external threads that adopts high-strength material to make additional in the tapped hole of low-intensity engineering material matrix, though adopt this mode can strengthen the tapped hole intensity of low-intensity engineering material matrix effectively, but because when adopting this mode, require swivel nut must be connected to an integral body with the tapped hole of matrix, can not become flexible, therefore requiring the outside thread of swivel nut must be the interference fit screw thread with the internal thread of the matrix that is cooperated, and the required precision of processing interference fit screw thread is high, its difficulty of processing is very big, often adopt the way of apolegamy, this not only causes the processing cost height, but also causes assembling difficulty, and if control the bad softer matrix tapped hole of material that also can damage when assembling.Therefore, the mode of existing this enhancing low-intensity engineering material matrix tapped hole intensity still is not ideal enough.
Summary of the invention
The objective of the invention is to: provide a kind of that do not need to make the interference fit screw thread and be connected reliably, be difficult for the method and the self-locking thread insert of loosening, easy processing, enhancing low-intensity engineering material matrix tapped hole intensity that fabricating cost is low with matrix, to overcome the deficiencies in the prior art.
The present invention is achieved in that the method for enhancing low-intensity engineering material matrix tapped hole intensity of the present invention is, be included in the swivel nut that has outside thread and interior threaded hole that adopts high-strength material to make is installed in the low-intensity engineering material matrix tapped hole, earlier on the external cylindrical surface of swivel nut one end that has outside thread and interior threaded hole, produce the anti-rotation sawtooth, be screwed into this swivel nut in the tapped hole of low-intensity engineering material matrix by the mode that is threaded then, after swivel nut all is screwed in the tapped hole of low-intensity engineering material matrix, having the swivel nut hole that an end of anti-rotation sawtooth adopts the punch die pressing mode to hold at swivel nut again swells, anti-rotation sawtooth on the swivel nut is embedded in the matrix, thereby swivel nut and matrix are connected as a single entity, to reach the purpose that strengthens low-intensity engineering material matrix tapped hole.
The swivel nut material that has outside thread and interior threaded hole that adopts high-strength material to make is martensitic precipitation (0Cr17Ni4CuNb) material, its tensile strength sigma b 〉=1100MPa.
A kind of self-locking thread insert that is used for method of the present invention is: comprise the swivel nut that has common outside thread and interior threaded hole, be provided with the anti-rotation sawtooth on an end external cylindrical surface of swivel nut.
The outside thread of swivel nut is regular screw threads, and the screw thread in the interior threaded hole of swivel nut is the self-locking type screw thread.
In the tapped hole of swivel nut, also be provided with inner spline groove.
Perhaps in the tapped hole of swivel nut, be provided with interior hex slot.
Owing to adopted technique scheme, the present invention swells by the swivel nut hole that the punch die pressing mode will have anti-rotation sawtooth one end, anti-rotation sawtooth on the swivel nut is embedded in the matrix, therefore do not need swivel nut to be threaded with the interference fit that is threaded to of matrix, only need the outside thread of swivel nut is processed as regular screw threads, swivel nut and matrix can be connected as a single entity reliably, can reduce requirement so greatly swivel nut outside thread machining accuracy.So the present invention compared with prior art, the present invention not only has with matrix and is connected reliably, is difficult for loosening advantage, but also has easy processing, fabricating cost is low, easy to assembly and can improves advantage such as efficiency of assembling.
Description of drawings
Fig. 1 is the schematic representation of swivel nut of the present invention when all being screwed into the matrix screw;
Fig. 2 is the structural representation when its anti-rotation sawtooth was embedded in the matrix after swivel nut of the present invention pressurizeed through punch die;
Fig. 3 is the structural representation of swivel nut of the present invention;
Fig. 4 is the structural representation when being provided with inner spline groove in the swivel nut interior threaded hole of the present invention;
Fig. 5 is the structural representation during hex slot in being provided with in the swivel nut interior threaded hole of the present invention.
Embodiment
Embodiments of the invention: when strengthening the operation of low-intensity engineering material matrix tapped hole intensity, adopt method of the present invention and self-locking thread insert to operate, promptly produce self-locking thread insert of the present invention earlier, this self-locking thread insert is the swivel nut 1 that is provided with outside thread and interior threaded hole, on an end external cylindrical surface of swivel nut 1, produce anti-rotation sawtooth 2 (as shown in Figure 3), and the outside thread of swivel nut 1 is made into regular screw threads, with the screw-tjread system in the interior threaded hole of swivel nut 1 make usual manner the self-locking type screw thread (structural principle of the self-locking type screw thread of usual manner: employing be outer power squeezing action, make a bit of screw thread in the internal thread effective length produce plastic deformation, promptly reduce the middle footpath equidimension at local internal thread place by plastic deformation, make internal thread when cooperating, produce certain magnitude of interference, to reach the purpose of locking with bolt.), the Manufacturing material of swivel nut 1 preferably adopts to be had good high-intensity martensitic precipitation material corrosion-resistant, oxidation resistance and makes (promptly adopting the 0Cr17Ni4CuNb material to make), makes its tensile strength sigma b 〉=1100MPa; In the tapped hole that can more easily swivel nut 1 be screwed into the matrix 5 that the low-intensity engineering material makes in use, can in the tapped hole of swivel nut 1, produce inner spline groove 3 (as shown in Figure 4) simultaneously or in the tapped hole of swivel nut 1, produce simultaneously in hex slot 4 (as shown in Figure 5, in making during hex slot 4, interfere in order to produce between hex slot 4 in preventing and the internal thread, and in order effectively to guarantee the rationality and the validity of product performance and processing, the hexagonal size only accounts for 1/5～1/3 part of the effective tooth depth of internal thread in requiring.), so promptly make self-locking thread insert of the present invention; Be screwed into the swivel nut 1 made in the tapped hole of the matrix 5 that the low-intensity engineering material makes by inner hexagon spanner or internal spline spanner, after in the tapped hole that swivel nut 1 all is screwed into matrix 5 (as shown in Figure 1), having the swivel nut hole that an end of anti-rotation sawtooth 2 adopts the punch die pressing mode to hold at swivel nut 1 again swells, make the anti-rotation sawtooth 2 on the swivel nut 1 be embedded into (as shown in Figure 2) in the matrix, thereby swivel nut and matrix are connected as a single entity, can reach the purpose that strengthens low-intensity engineering material matrix tapped hole like this.
Claims (6)
1. method that strengthens low-intensity engineering material matrix tapped hole intensity, be included in the swivel nut that has outside thread and interior threaded hole that adopts high-strength material to make is installed in the low-intensity engineering material matrix tapped hole, it is characterized in that: on the external cylindrical surface of swivel nut one end that has outside thread and interior threaded hole, produce the anti-rotation sawtooth earlier, be screwed into this swivel nut in the tapped hole of low-intensity engineering material matrix by the mode that is threaded then, after swivel nut all is screwed in the tapped hole of low-intensity engineering material matrix, having the swivel nut hole that an end of anti-rotation sawtooth adopts the punch die pressing mode to hold at swivel nut again swells, anti-rotation sawtooth on the swivel nut is embedded in the matrix, thereby swivel nut and matrix are connected as a single entity, to reach the purpose that strengthens low-intensity engineering material matrix tapped hole.
2. the method for enhancing low-intensity engineering material matrix tapped hole intensity according to claim 1, it is characterized in that: the swivel nut material that has outside thread and interior threaded hole that adopts high-strength material to make is martensitic precipitation (OCr17Ni4CuNb) material, its tensile strength sigma b 〉=1100MPa.
3. a self-locking thread insert comprises the swivel nut (1) that is provided with outside thread and interior threaded hole, it is characterized in that: be provided with anti-rotation sawtooth (2) on an end external cylindrical surface of swivel nut (1).
4. self-locking thread insert according to claim 3 is characterized in that: the outside thread of swivel nut (1) is regular screw threads, and the screw thread in the interior threaded hole of swivel nut (1) is the self-locking type screw thread.
5. self-locking thread insert according to claim 3 is characterized in that: also be provided with inner spline groove (3) in the tapped hole of swivel nut (1).
6. self-locking thread insert according to claim 3 is characterized in that: also be provided with interior hex slot (4) in the tapped hole of swivel nut (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910301761A CN101619740A (en) | 2009-04-23 | 2009-04-23 | Method for reinforcing thread hole strength of engineering material matrix with low strength and self-locking thread sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910301761A CN101619740A (en) | 2009-04-23 | 2009-04-23 | Method for reinforcing thread hole strength of engineering material matrix with low strength and self-locking thread sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101619740A true CN101619740A (en) | 2010-01-06 |
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ID=41513112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910301761A Pending CN101619740A (en) | 2009-04-23 | 2009-04-23 | Method for reinforcing thread hole strength of engineering material matrix with low strength and self-locking thread sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101619740A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105411697A (en) * | 2015-10-23 | 2016-03-23 | 成都普川生物医用材料股份有限公司 | Dental implant |
| CN105650094A (en) * | 2016-03-14 | 2016-06-08 | 北京首航科学技术开发有限公司 | Self-locking swivel nut and connecting assembly with self-locking swivel nut |
| CN106523504A (en) * | 2017-01-15 | 2017-03-22 | 湖北博士隆科技股份有限公司 | Inner support anti-rotation anti-disengagement thread sleeve special for aluminum profile and installation method of inner support anti-rotation anti-disengagement thread sleeve |
-
2009
- 2009-04-23 CN CN200910301761A patent/CN101619740A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105411697A (en) * | 2015-10-23 | 2016-03-23 | 成都普川生物医用材料股份有限公司 | Dental implant |
| CN105650094A (en) * | 2016-03-14 | 2016-06-08 | 北京首航科学技术开发有限公司 | Self-locking swivel nut and connecting assembly with self-locking swivel nut |
| CN106523504A (en) * | 2017-01-15 | 2017-03-22 | 湖北博士隆科技股份有限公司 | Inner support anti-rotation anti-disengagement thread sleeve special for aluminum profile and installation method of inner support anti-rotation anti-disengagement thread sleeve |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100106 |