CN109737131A - A kind of self-locking screw component and preparation method thereof - Google Patents
A kind of self-locking screw component and preparation method thereof Download PDFInfo
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- CN109737131A CN109737131A CN201910158880.8A CN201910158880A CN109737131A CN 109737131 A CN109737131 A CN 109737131A CN 201910158880 A CN201910158880 A CN 201910158880A CN 109737131 A CN109737131 A CN 109737131A
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Abstract
The invention discloses a kind of self-locking screw components and preparation method thereof, the self-locking screw component includes self-locking screw, elastic washer and plain washer, self-locking screw includes head, threaded shank and thread segment, head is integrally formed structure with thread segment by threaded shank, the major diameter of thread of thread segment is greater than the diameter of threaded shank, and elastic washer and plain washer are sequentially arranged in the threaded shank between head and thread segment.The self-locking screw component made of the method for the invention, its structure is simple, design is reasonable, also have production method simple, the advantages that low manufacture cost, its versatility it is good, it can be achieved that double self locking purpose, and be able to achieve between self-locking screw, elastic washer and plain washer formed integration, its locking high safety and reliability, stable mechanical performance, it is easy to maintain, especially suitable for the demanding assembly connection of anti-loosing effect, its versatility is good, it is convenient to mount and dismount, can promote the use and be used in various complex environment systems, be suitble to promote and apply.
Description
Technical field
The present invention relates to technical field of fastening, specifically a kind of self-locking screw component and preparation method thereof.
Background technique
Fastener is a kind of mechanical organ can be mechanically fixed by two or more elements or be bonded together.
Its feature is that description is various, and performance purposes is different, and standardization, seriation, unitized strong.Fastener
It is most widely used mechanical basic part, is in great demand.Various machinery, equipment, vehicle, ship, railway, bridge is widely applied
The fields such as beam, building, structure, tool, instrument, chemical industry, instrument and articles, it is in routine work it can also be seen that miscellaneous tight
Firmware.
In aircraft, submersible Element Design, there is multifunctionality, highly reliable high-end of small in size, light-weight, intensity
Fastener, technical requirements are high, structure is complicated, technology difficulty is big, expensive.With the development of modern science and technology, especially smelting
The rapid development of technology for gold.The performance of raw material is greatly improving, especially the fining of raw material alloy constituent content, polynary
Change, effective control of harmful substance, raw material intensity, plasticity and property etc. are effectively controlled, and can obtain ideal
Property material.
With the development of science and technology mechanization, the degree of automation rapidly improve, the safety of mechanical equipment is proposed higher
Requirement.For the purpose of safety, it is desirable that the connection between mechanical equipment, components is safe and reliable.Engineering goods are set at present
Meter all tends to intelligentized design, functionalized design and anti-dropout reliability design, and it is very crucial that anti-dropout, which has self-locking property,
A technical indicator, realize anti-dropout have self-locking property design scheme have very much, respectively have disadvantage benefit.Therefore, it is necessary to set
Count out a kind of connection it is reliable, using safe fixedly connected part, there is simple process and low cost, it is highly reliable.
Summary of the invention
The problem of for background technique, the object of the present invention is to provide a kind of high-strength spring gasket pilot holes
Processing method, by increasing the bore hole on lathe, processes cooperation required precision, specifically on the basis of the processing of conventional pads
It is a kind of self-locking screw component and preparation method thereof that ground, which is said,.
In order to solve the above technical problems, the technical scheme adopted by the invention is as follows: a kind of self-locking screw component, feature exist
In: it include self-locking screw, elastic washer and plain washer, the self-locking screw includes head, threaded shank and thread segment, described
Head is integrally formed structure with thread segment by threaded shank, and the major diameter of thread of the thread segment is greater than the diameter of the threaded shank,
The form of thread of the thread segment is triangle thread, is additionally provided with ending screw thread in the thread segment and threaded shank connection,
The ending screw thread is incomplete thread, and the screw pitch of the ending screw thread is less than or equal to 1/2 spiral shell of standard pitch on thread segment
Away from, it is generated when self-locking screw can be made to cooperate with nut by the ending screw thread and interferes realization self-locking, the elastic washer peace
Washer is set in turn in the threaded shank between head and thread segment.
Further, self-locking screw component of the present invention, wherein the apex angle of the triangle thread is with base angle
The form of thread that thread form angle is 60 degree, wherein the screw pitch of apex angle is 1/8 screw pitch of thread segment Plays screw pitch, and the screw pitch at base angle is
1/4 screw pitch of thread segment Plays screw pitch；Two sides are equipped with the interference fit portion being made of changeover portion, the mistake at the base angle
Cross the arc transition structure that section is R0.3.
Further, self-locking screw component of the present invention, wherein the shape on the head is countersunk head type, cup head
Type, cylinder head dummy, hexagonal head type or coiled hair type structure.
Further, self-locking screw component of the present invention, wherein the hole size of the elastic washer and plain washer
Match with the outer diameter of the threaded shank, is successively mutually passed through between the elastic washer and plain washer and be connected to the head and screw thread
In threaded shank between section.
The present invention also provides the production method of above-mentioned self-locking screw component, the production method the following steps are included:
Step A: prefabricated elastic washer and plain washer with inner hole in advance;
Step B: prefabricated self-locking screw after being configured to blank using silk material upsetting system, forms, at subsequent thermal through no machining
After reason and surface treatment, self-locking screw (1) product with head, threaded shank and thread segment is obtained；
Step C: prefabricated elastic washer is successively mutually passed through with plain washer by one rod end of thread segment and is connected to the head and spiral shell
In threaded shank between line section, bolt assembly is formed；
Step D: bolt assembly is fixed in lathe, according to isometric deformation principle, using the rolled thread mode of no cutting in spiral shell
Screw thread is processed in line section, after shape type is processed in rolled thread, the Major Diam size of the thread segment is greater than the diameter of the threaded shank,
The Major Diam size of thread segment is set to be greater than the hole size of the elastic washer and plain washer that are located in threaded shank simultaneously, it is processed
After shape type, the self-locking screw, elastic washer and plain washer is made to form integral structure to get the self-locking screw component.
Further, the production method of the self-locking screw component, wherein being made in the step B process
When threaded shank, by 1.5~2.5 times that the length of the threaded shank is screw thread segment length.
Further, the production method of the self-locking screw component, wherein in the step D process, the rolling
Silk mode is to be rolled out the screw thread of required standard pitch on thread segment by screw thread cylindrical die roll using screw thread cylindrical die roll, rolled
When pressing screw thread, thread segment and threaded shank connection is set to be additionally provided with ending screw thread, the ending screw thread is incomplete thread, described
The screw pitch of ending screw thread is less than or equal to 1/2 screw pitch of standard pitch on thread segment.
Further, the production method of the self-locking screw component, wherein being rolled on thread segment using screw thread cylindrical die roll
The form of thread of required standard pitch is triangle thread out.
Using a kind of self-locking screw component of the present invention and preparation method thereof, compared with prior art, effectively imitate
Fruit is: due to being additionally provided with ending screw thread in the thread segment and threaded shank connection, can be made certainly by the ending screw thread
It is self-locking that interference realization is generated when locking bolts and nuts cooperation；In addition, elastic washer and plain washer are set in turn in head and spiral shell
In threaded shank between line section, the rolled thread processing screw thread of no cutting is then carried out, the Major Diam size to be formed is processed through rolled thread
Greater than the hole size of the elastic washer and plain washer that are located in threaded shank, after processed shape type, make the self-locking screw, elasticity
Washer and plain washer form integral structure, can achieve the purpose of self-locking anti-loosing.
The self-locking screw component made of the method for the invention, structure is simple, and design rationally, also has production side
The advantages that method is simple, low manufacture cost, versatility it is good, it can be achieved that double self locking purpose, and be able to achieve self-locking screw, elasticity
Integration is formed between washer and plain washer, locking high safety and reliability, stable mechanical performance is easy to maintain, particularly suitable
In the demanding assembly connection of anti-loosing effect, versatility is good, is convenient to mount and dismount, and can promote the use in various complex environment systems
It uses, is suitble to promote and apply.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is structural schematic diagram of the invention；Design of part schematic diagram to be processed；
Fig. 2 is the structural schematic diagram of self-locking screw in the present invention；
Fig. 3 is the structural schematic diagram of heretofore described elastic washer；
Fig. 4 is the structural schematic diagram of heretofore described plain washer；
Fig. 5 is the form of thread structural schematic diagram of heretofore described thread segment；
Fig. 6 is the axis of thread schematic diagram of Fig. 5 thread segment；
Fig. 7 is the structural schematic diagram of the present invention in application process.
It is as shown in the figure: 1- self-locking screw, the head 11-, 12- threaded shank, 13- thread segment, 14- ending screw thread, 2- elastic cushion
Circle, 3- plain washer, 4- nut.
Specific embodiment
To further illustrate inventive concept of the invention, below with reference to attached drawing to a specific embodiment of the invention make into
One step explanation:
As shown in Figures 1 to 7, a kind of self-locking screw component of the present invention includes self-locking screw 1,2 peace of elastic washer
Washer 3, the self-locking screw 1 include head 11, threaded shank 12 and thread segment 13, and the head 11 passes through threaded shank 12 and spiral shell
Line section 13 is integrally formed structure, and the major diameter of thread of the thread segment 13 is greater than the diameter of the threaded shank 12, the thread segment 13
Form of thread be triangle thread, be additionally provided with ending screw thread 14 in the thread segment 13 and 12 connection of threaded shank, it is described
Ending screw thread 14 is incomplete thread, and the screw pitch of the ending screw thread 14 is less than or equal to 1/2 of standard pitch on thread segment 13
Screw pitch generates interference and realizes self-locking, the elastic washer when self-locking screw 1 can be made to cooperate with nut by the ending screw thread 14
2 and plain washer 3 be set in turn in the threaded shank 12 between head 11 and thread segment 13.
Further, self-locking screw component of the present invention, wherein the apex angle of the triangle thread is with base angle
The form of thread that thread form angle is 60 degree, wherein the screw pitch of apex angle is 1/8 screw pitch of 13 Plays screw pitch of thread segment, the screw pitch at base angle
For 1/4 screw pitch of 13 Plays screw pitch of thread segment；Two sides are equipped with the interference fit portion 15 being made of changeover portion at the base angle,
The changeover portion is the arc transition structure of R0.3.
Further, self-locking screw component of the present invention, wherein the shape on the head 11 can be according to the need used
It wants, is made as countersunk head type, semicircle head dummy, cylinder head dummy, hexagonal head type or coiled hair type structure.
Further, self-locking screw component of the present invention, wherein the inner hole ruler of the elastic washer 2 and plain washer 3
The very little outer diameter with the threaded shank 12 matches, and successively mutually passes through between the elastic washer 2 and plain washer 3 and is connected to the head
In threaded shank 12 between 11 and thread segment 13.
The present invention also provides the production methods of above-mentioned self-locking screw component, used using the good material of intensity and plasticity
Material be cold drawing disk circle silk material, can alloy steel by heat treatment reinforcement, stainless steel.To the material of selection through nothing
Not broken shape crystal grain passes through in stream the linear alignment, the i.e. uniform full height orientation of grain flow line, material after cutting cold upsetting processing
Pressure processing greatly enhances its tensile strength and fatigue strength after generating flow harden, obtains ideal form blank.
The specific production method the following steps are included:
Step A: prefabricated elastic washer 2 and plain washer 3 with inner hole in advance;
Step B: prefabricated self-locking screw 1 after being configured to blank using silk material upsetting system, forms, through subsequent thermal through no machining
After processing and surface treatment, 1 product of self-locking screw with head 11, threaded shank 12 and thread segment 13 is obtained；The wherein spiral shell
The length of the threaded shank 12 can be made as screw thread according to the needs of use, when making threaded shank 12 by the length of bar portion 12
1.5~2.5 times of 13 length of section；
Step C: prefabricated elastic washer 2 is successively mutually passed through with plain washer 3 by 13 1 rod end of thread segment and is connected to the head
In threaded shank 12 between 11 and thread segment 13, bolt assembly is formed；
Step D: bolt assembly is fixed in lathe, according to isometric deformation principle, using the rolled thread mode of no cutting in spiral shell
Screw thread is processed in line section 13, after shape type is processed in rolled thread, the Major Diam size of the thread segment 13 is greater than the threaded shank 12
Diameter, while make thread segment 13 Major Diam size be greater than be located at threaded shank 12 in elastic washer 2 and plain washer 3 it is interior
Pore size after processed shape type, makes the self-locking screw 1, elastic washer 2 and plain washer 3 form integral structure to get described
Self-locking screw component.Wherein the rolled thread mode is to be rolled on thread segment 13 using screw thread cylindrical die roll by screw thread cylindrical die roll
The screw thread of required standard pitch out, the form of thread are triangle thread；In rolled thread, make thread segment 13 and threaded shank
12 connections are additionally provided with ending screw thread 14, and the ending screw thread 14 is incomplete thread, and the screw pitch of the ending screw thread 14 is small
In or equal on thread segment 13 standard pitch 1/2 screw pitch.
In actual application, using self-locking screw component of the present invention, when needs are attached with nut 4
When, by being spirally connected between nut 4 and thread segment 13, due to the thread segment 13 with 12 connection of threaded shank also
It is generated when thread segment 13 and nut 4 in self-locking screw 1 can be made to cooperate by the ending screw thread 14 equipped with ending screw thread 14
Certain interference, to realize that its is self-locking；In addition, by elastic washer 2 and plain washer 3 be set in turn in head 11 and thread segment 13 it
Between threaded shank 12 in, then carry out no cutting rolled thread processing screw thread, the Major Diam size to be formed is processed through rolled thread and is greater than
The hole size of elastic washer 2 and plain washer 3 in threaded shank 12 after processed shape type, makes the self-locking screw 1, bullet
Property washer 2 and plain washer 3 formed integral structure, can also further achieve the purpose that self-locking anti-loosing.It is dual to realize
Self-locking and then reach anti-loosing effect, high safety and reliability, stable mechanical performance is easy to maintain.
In conclusion the self-locking screw component made of the method for the invention, structure is simple, and design rationally, is gone back
Have many advantages, such as that production method is simple, low manufacture cost, versatility it is good, it can be achieved that double self locking purpose, and be able to achieve from
It locks and forms integration between bolt 1, elastic washer 2 and plain washer 3, locking high safety and reliability, stable mechanical performance, maintenance
Convenient, especially suitable for the demanding assembly connection of anti-loosing effect, versatility is good, is convenient to mount and dismount, and can promote the use in various
It is used in complex environment system, operation and easy to use, suitable popularization and application.
Protection scope of the present invention is not limited only to technical solution disclosed in specific embodiment, and the foregoing is merely this hairs
Bright better embodiment, is not intended to limit the present invention, and any trickle amendment made by all technical solutions according to the present invention is equal
Replacement and improvement, all should be included in the scope of protection of the technical solution of the present invention.
Claims (8)
1. a kind of self-locking screw component, it is characterised in that: include self-locking screw (1), elastic washer (2) and plain washer (3), institute
Stating self-locking screw (1) includes head (11), threaded shank (12) and thread segment (13), and the head (11) passes through threaded shank (12)
Structure is integrally formed with thread segment (13), the major diameter of thread of the thread segment (13) is greater than the diameter of the threaded shank (12), institute
The form of thread for stating thread segment (13) is triangle thread, is additionally provided in the thread segment (13) and threaded shank (12) connection
It finishes up screw thread (14), the ending screw thread (14) is incomplete thread, and the screw pitch of ending screw thread (14) is less than or equal to spiral shell
1/2 screw pitch of standard pitch in line section (13) can be such that self-locking screw (1) produces when cooperating with nut by the ending screw thread (14)
Raw interference realization is self-locking, and the elastic washer (2) and plain washer (3) are set in turn between head (11) and thread segment (13)
In threaded shank (12).
2. self-locking screw component according to claim 1, it is characterised in that: the apex angle of the triangle thread and base angle are equal
The form of thread for being 60 degree for thread form angle, wherein the screw pitch of apex angle is 1/8 screw pitch of thread segment (13) Plays screw pitch, base angle
Screw pitch is 1/4 screw pitch of thread segment (13) Plays screw pitch；Two sides are equipped with the interference being made of changeover portion and match at the base angle
Conjunction portion (15), the changeover portion are the arc transition structure of R0.3.
3. self-locking screw component according to claim 1, it is characterised in that: the shape of the head (11) be countersunk head type,
Semicircle head dummy, cylinder head dummy, hexagonal head type or coiled hair type structure.
4. self-locking screw component according to claim 1, it is characterised in that: the elastic washer (2) and plain washer (3)
Hole size and the outer diameter of the threaded shank (12) match, successively Xiang Guanlian between the elastic washer (2) and plain washer (3)
It is connected in the threaded shank (12) between the head (11) and thread segment (13).
5. a kind of production method of self-locking screw component of production as described in any one of Claims 1-4, feature exist
In, the production method the following steps are included:
Step A: prefabricated elastic washer (2) and plain washer (3) with inner hole in advance;
Step B: prefabricated self-locking screw (1) after being configured to blank using silk material upsetting system, forms, through subsequent through no machining
After heat treatment and surface treatment, self-locking screw (1) product with head (11), threaded shank (12) and thread segment (13) is obtained；
Step C: prefabricated elastic washer (2) is successively mutually passed through with plain washer (3) by (13) one rod end of thread segment and is connected to institute
It states in the threaded shank (12) between head (11) and thread segment (13), forms bolt assembly；
Step D: bolt assembly is fixed in lathe, according to isometric deformation principle, using the rolled thread mode of no cutting in spiral shell
Screw thread is processed in line section (13), after shape type is processed in rolled thread, the Major Diam size of the thread segment (13) is greater than the screw rod
The diameter in portion (12), while the Major Diam size of thread segment (13) being made to be greater than the elastic washer (2) being located in threaded shank (12)
With the hole size of plain washer (3), after processed shape type, make the self-locking screw (1), elastic washer (2) and plain washer (3) shape
Integralization structure is to get the self-locking screw component.
6. the production method of self-locking screw component according to claim 5, it is characterised in that: processed in the step B
Cheng Zhong, when making threaded shank (12), by 1.5~2.5 times that the length of the threaded shank (12) is thread segment (13) length.
7. the production method of self-locking screw component according to claim 5, it is characterised in that: processed in the step D
Cheng Zhong, the rolled thread mode are to roll out required standard on thread segment (13) by screw thread cylindrical die roll using screw thread cylindrical die roll
The screw thread of screw pitch makes thread segment (13) and threaded shank (12) connection be additionally provided with ending screw thread (14), institute in rolled thread
Stating ending screw thread (14) is incomplete thread, and the screw pitch of ending screw thread (14) is less than or equal to standard spiral shell on thread segment (13)
Away from 1/2 screw pitch.
8. the production method of self-locking screw component according to claim 7, it is characterised in that: using screw thread cylindrical die roll in spiral shell
The form of thread that required standard pitch is rolled out in line section (13) is triangle thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910158880.8A CN109737131A (en) | 2019-03-04 | 2019-03-04 | A kind of self-locking screw component and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910158880.8A CN109737131A (en) | 2019-03-04 | 2019-03-04 | A kind of self-locking screw component and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109737131A true CN109737131A (en) | 2019-05-10 |
Family
ID=66369221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910158880.8A Pending CN109737131A (en) | 2019-03-04 | 2019-03-04 | A kind of self-locking screw component and preparation method thereof |
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| Country | Link |
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| CN (1) | CN109737131A (en) |
Cited By (1)
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| CN112496249A (en) * | 2020-11-11 | 2021-03-16 | 嘉兴联控汽车部件有限公司 | Processing technology of high-temperature-resistant anti-loosening bolt |
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Application publication date: 20190510 |