CN207246197U - A kind of light-duty self-locking nut of anti-cold welding of self-lubricating - Google Patents
A kind of light-duty self-locking nut of anti-cold welding of self-lubricating Download PDFInfo
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- CN207246197U CN207246197U CN201720544597.5U CN201720544597U CN207246197U CN 207246197 U CN207246197 U CN 207246197U CN 201720544597 U CN201720544597 U CN 201720544597U CN 207246197 U CN207246197 U CN 207246197U
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Abstract
The utility model discloses a kind of light-duty self-locking nut of the anti-cold welding of self-lubricating, which includes self-locking nut body (2) and produces the sealing retaining ring (1) of locking torque in the self-locking nut body (2) and by being plastically deformed for loading.The utility model can minimize self-locking nut structure design weight, and the sealing effect of rationality is obtained while can control locking torque, effectively prevent that the cold sweat between assembling back nut and bolt is Nian Jie, and security reliability is high, and stable mechanical performance is easy to maintain.
Description
Technical field
The one kind that the utility model is related to technical field of mechanical processing is fastenedly connected component, more particularly to a kind of self-lubricating
The anti-light-duty self-locking nut of cold welding.
Background technology
It is multi-functional in anchor design is mechanically connected, it is small, light-weight, intensity is high, self-lubricating is prevented, anti-cold welding,
The high-end fasteners of good airproof performance are more and more.This kind of fastener technology requirement is high, complicated, technology difficulty is big, price is held high
It is expensive.
Utility model content
The purpose of this utility model is to provide a kind of light-duty self-locking nut of the anti-cold welding of self-lubricating, tight in the prior art to solve
Firmware techniques require the problem of high, complicated, technology difficulty is big, expensive.
The utility model is realized in this way：
First, the utility model proposes a kind of light-duty self-locking nut of the anti-cold welding of self-lubricating, it include self-locking nut body and
The sealing retaining ring of locking torque is produced in the self-locking nut body and by being plastically deformed for loading.
Wherein, self-locking nut is equipped with hexagonal twisting face in vitro, and self-locking nut body is received from one end by circular cone towards the other end
Mouthful, form nut body closing in end face corresponding with nut body end face in closing in one end；Internal thread is equipped with self-locking nut body, certainly
In split nut body retaining ring is sealed along the circumferential nut body inner cylinder face for being equipped with groove profile of internal thread close to nut body closing in endface
Load in the nut body inner cylinder face of self-locking nut body.
Six side's chamferings are equipped with cylindrical surface and hexagonal twisting face intersection, in the nut body end face and hexagonal twisting face phase
End chamfer is equipped with friendship.
The circumferential middle part along the hexagonal twisting face is equipped with mitigates groove together, which includes the mitigation groove side of both sides
With the mitigation groove arc surface of bottom.
Sealing retaining ring includes sealing retaining ring external cylindrical surface, and sealing retaining ring end face I, seals retaining ring inner cylinder face,
Seal retaining ring end face II；The sealing retaining ring external cylindrical surface, sealing retaining ring end face I, sealing retaining ring end face II and spiral shell
Parent inner cylinder face matches.
The end face of the groove where nut body inner cylinder face between internal thread due to height difference formed together be used for from side
The sealing retaining ring supporting surface that sealing retaining ring extruding is supported.
Internal thread chamfering is equipped between internal thread and nut body end face.
Between angle between two mitigation groove sides takes 35 °~45 °, mitigate between groove arc surface and internal thread Major Diam
Thickness is not less than 2.5mm.
A kind of manufacture method of the light-duty self-locking nut of the anti-cold welding of self-lubricating of the utility model, is to use structural alloy steel
30CrMnSiA materials are the manufacture material of self-locking nut body, use polytetrafluoroethylene material to seal the manufacture material of retaining ring,
Directly it is molded using bar or forging forming shape blank, through machine finishing, punching press is closed up shaping.
The application method of the light-duty self-locking nut of this anti-cold welding of self-lubricating is such, passes through connection bolt connected first
Fitting is threadedly coupled in self-locking nut reaches required pretightning force by the hexagonal twisting face of twisting self-locking nut；Pass through nut body end
Sealing locking ring seal is fixed within self-locking nut body by the bending ram deformation in face, and pressurization retaining ring produces plasticity
Deformation, obtains the sealing effect of rationality while obtaining locking torque.
The technical solution of the utility model has following key point：
Directly it is molded using bar or forging forming, improves stock utilization, meets modern few cutting or the hair without cutting
Exhibition trend.This is one of key of the utility model.
Theoretical foundation is the structural alloy steel 30CrMnSiA for using the intensity height of material, upsetting performance good for nut body
Manufacture material, its crystal grain not broken shape after molding or forging forming are in stream the linear alignment, the i.e. uniform full height of grain flow line
Orientation, material make sealing retaining ring plastic deformation realize that locking is not easy to crack by Pressing Deformation.Change conventional matel coated profit
Sliding, by the plastic deformation of screw thread close up obtains the closing in mode of locking torque, using new closing in mode.This is this reality
With the two of new key.
Material makes sealing retaining ring plastic deformation realize locking while realizes sealing, novel seal form by Pressing Deformation
Utilization, this is the three of the key of the utility model.
To prevent cold welding (being mutually bonded between phase counterdiffusion produces metallic matrix between atom between metallic matrix) from changing
Conventional matel coated lubrication, is sealed and is obtained the new construction of locking torque using the new structure type of sealing retaining ring, close
Envelope retaining ring manufacture material uses polytetrafluoroethylene material, and the coupling mechanism force of rationality is readily available after good seal performance, deformation of closing up
The manufacture material 30CrMnSiA of square and nut body does not produce cold welding, and sealing locks ring structure design sealing and locks synchronous progress,
Metal material prevents that cold welding is be bonded with the combination of nonmetallic materials, this is the four of the key of the utility model.
Mitigating groove includes：Mitigate groove side, mitigate groove arc surface, the angles between two mitigation groove sides take 35 °~45 ° it
Between, mitigate thickness between groove arc surface and internal thread Major Diam and be not less than 2.5mm, two mitigate the angle value between groove side
Take large values as far as possible on the basis of twisting characteristic requirements are met, mitigate effect to reach optimal.This is the pass of the utility model
The five of key.
The utility model can minimize self-locking nut structure design weight due to taking above technical scheme, can
The sealing effect of rationality is obtained while controlling locking torque, effectively prevents the cold sweat between assembling back nut and bolt from gluing
Connect, security reliability is high, and stable mechanical performance is easy to maintain.
Compared with prior art, the utility model can not only solve the problems, such as to mention in background technology, can also be by weight
Original 15% or so is reduced to, then the lifting capacity to aerospace vehicle, submersible will be great contribution.Its pretightning force,
Locking torque, reliability, sealing performance, anti-cold welding performance greatly increase, and prospect is splendid to have promotional value.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is self-locking nut body structure diagram；
Fig. 3 is sealing locking ring structure schematic diagram；
Fig. 4 is the exemplary application map of the utility model；
Fig. 5 is the left view of Fig. 1 and Fig. 2；
Fig. 6 is the left view of Fig. 3.
Description of reference numerals：1- sealing retaining rings, 2- self-locking nut bodies, 3- circular conical surfaces, six side's chamferings of 4-, 5- fall end face
Angle, 6- nut bodies end face, 7- internal threads, 8- internal thread chamferings, 9- mitigate groove, and 10- mitigates groove side, and 11- mitigates groove arc surface,
12- seals retaining ring supporting surface, 13- nut body inner cylinder faces, 14- nut body closing ins end face, 15- hexagonal twistings face, 16- sealings
Retaining ring external cylindrical surface, 17- sealing retaining rings end face I, 18- sealing retaining ring inner cylinder faces, 19- sealing retaining rings end face II,
20- connected pieces, 21- connection bolts, 22- self-locking nuts.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
The design concept of the utility model is to utilize modern high technology material, advanced processing technology, brand-new design reason
Read, solve the mitigation weight of one of the biggest problem of puzzlement Flight Vehicle Design.Product strength, increase pretightning force, lock are improved at the same time
The controllability and sealing performance of clamp force square, effectively prevent the cold welding phenomenon between assembling rear thread.The utility model collection is more
Function is integrated, and meets the requirement trend of modern mechanical connection.
This self-locking nut 22 of the utility model is directly molded using bar or forging forming shape blank, through mechanical essence
Processing, punching press, which is closed up, to be molded.The theoretical foundation is:Using the structural alloy steel that the intensity of material is high, upsetting performance is good
30CrMnSiA is the manufacture material of self-locking nut body 2, its crystal grain not broken shape after molding or forging forming is arranged in streamline shape
The uniform full height orientation of row, i.e. grain flow line, material greatly enhance it after molding or forging forming produce flow harden
Tensile strength and fatigue strength, obtain arbitrary shape blank.To prevent that cold welding (produce between atom between metallic matrix by phase counterdiffusion
It is mutually bonded between raw metallic matrix) change conventional matel coated lubrication, by the plastic deformation of screw thread close up and locked
The closing in mode of clamp force square, is sealed and is obtained the new construction of locking torque using the new structure type of sealing retaining ring 1, close
Envelope 1 manufacture material of retaining ring uses polytetrafluoroethylene material, and the coupling mechanism force of rationality is readily available after good seal performance, deformation of closing up
Metal effectively prevents cold welding phenomenon with nonmetallic combination between square and the manufacture material 30CrMnSiA of nut body.
The structure shown with reference to Fig. 1-Fig. 6, the utility model have the advantages that following main feature and：
Controllable locking torque：Sealing retaining ring 1 is loaded in the nut body inner cylinder face 13 of self-locking nut body 2, passes through spiral shell
The sealing closing of retaining ring 1 is fixed within self-locking nut body 2 by the bending ram deformation of parent end face 6, and stresses on dense block
Tight ring 1 produces plastic deformation, and adjustment deflection size realizes the control of locking torque and the requirement of sealing performance grade.
Controllable weight：Mitigating groove 9 includes：Mitigate groove side 10, mitigate groove arc surface 11, two mitigate between groove sides 10
Between angle takes 35 °~45 °, mitigate thickness between groove arc surface 11 and 7 Major Diam of internal thread and be not less than 2.5mm, two mitigate
Angle value between groove side 10 takes large values as far as possible on the basis of twisting characteristic requirements are met, mitigates effect to reach optimal
Fruit.
The structure of the utility model is described further referring to Fig. 1-Fig. 6：
As shown in Figure 1, the self-locking nut 22 of the utility model includes:Seal retaining ring 1, self-locking nut body 2.
Sealing retaining ring 1 includes sealing retaining ring external cylindrical surface 16, and sealing retaining ring end face I 17, seals retaining ring inner circle
Cylinder 18, sealing retaining ring end face II 19, as shown in Figure 3.Wherein, retaining ring external cylindrical surface 16, sealing retaining ring end face I are sealed
17, sealing retaining ring end face II 19 is matched with nut body inner cylinder face 13.Seal 18 size of retaining ring inner cylinder face according to
Connection 21 specification of bolt and required locking torque size and sealing performance class requirement determine.
As shown in Fig. 2, self-locking nut body 2 includes：Circular conical surface 3, six side's chamferings 4, end chamfer 5, nut body end face 6 are interior
Screw thread 7, internal thread chamfering 8, mitigates groove 9, mitigates groove side 10, mitigates groove arc surface 11, sealing retaining ring supporting surface 12, nut
Internal cylindrical surface 13, nut body closing in end face 14, hexagonal twisting face 15.
Wherein, circular conical surface 3, six side's chamferings 4, end chamfer 5, nut body end face 6,8 good appearance of internal thread chamfering,
Excessive requirement is not done to its size, hexagonal twisting face 15 must is fulfilled for the requirement of twisting characteristic, and smooth appearance is beautiful.
Internal thread 7 includes metric thread, inch screw thread, U.S. standard screw thread, Whitworth thread MJ screw threads etc. arbitrarily with being connected bolt
The matching connection of 21 screw threads.
Embodiment 1：
The light-duty self-locking nut 22 of the anti-cold welding of self-lubricating, including sealing retaining ring 1, self-locking nut body 2.
Connection bolt 21 is threadedly coupled by twisting self-locking nut 22 through connected piece 20 in self-locking nut 22 first
Hexagonal twisting face 15 reach required pretightning force.So far installation process is completed.As shown in Figure 4.The design for mitigating groove 9 effectively subtracts
Light self-locking nut weight.The sealing closing of retaining ring 1 is fixed on by self-locking nut by the bending ram deformation of nut body end face 6
Within body 2, and pressurization retaining ring 1 produces plastic deformation, and the sealing effect of rationality is obtained while obtaining locking torque.Gold
Belong to the combination of material and nonmetallic materials, effectively prevent cold welding to be bonded.
Certainly, it is the concrete application example of the utility model above, the utility model also has other embodiments, all
The technical solution formed using equivalent substitution or equivalent transformation, is all fallen within the protection domain required by the utility model.
Claims (6)
- A kind of 1. light-duty self-locking nut of anti-cold welding of self-lubricating, it is characterised in that：It includes self-locking nut body（2）With for loading this Self-locking nut body（2）Sealing retaining ring interior and that locking torque is produced by being plastically deformed（1）；The self-locking nut body（2）Outside Equipped with hexagonal twisting face（15）, self-locking nut body（2）Pass through circular conical surface from one end（3）Close up to the other end, in closing in one end shape Into with nut body end face（6）Corresponding nut body closing in end face（14）；The self-locking nut body（2）It is interior to be equipped with internal thread（7）, Self-locking nut body（2）Interior close nut body closing in end face（14）Place is along internal thread（7）Circumferential direction is equipped with cylinder in the nut body of groove profile Face（13）, the sealing retaining ring（1）Load self-locking nut body（2）Nut body inner cylinder face（13）It is interior；In the nut body Inner cylinder face（13）With hexagonal twisting face（15）Intersection is equipped with six side's chamferings（4）, in the nut body end face（6）Pulled with hexagonal The face of twisting（15）Intersection is equipped with end chamfer（5）.
- 2. the light-duty self-locking nut of the anti-cold welding of self-lubricating according to claim 1, it is characterised in that：Circumferential direction is pulled along the hexagonal The face of twisting（15）Middle part be equipped with together mitigate groove（9）, the mitigation groove（9）Mitigation groove side including both sides（10）With subtracting for bottom Light groove arc surface（11）.
- 3. the light-duty self-locking nut of the anti-cold welding of self-lubricating according to claim 1, it is characterised in that：The sealing retaining ring （1）Including sealing retaining ring external cylindrical surface（16）, sealing retaining ring end face I（17）, seal retaining ring inner cylinder face（18）, sealing Retaining ring end face II（19）；The sealing retaining ring external cylindrical surface（16）, sealing retaining ring end face I（17）, sealing retaining ring end Face II（19）With nut body inner cylinder face（13）Matching.
- 4. the light-duty self-locking nut of the anti-cold welding of self-lubricating according to claim 1, it is characterised in that：In the nut body inner circle Cylinder（13）The end face of the groove at place and internal thread（7）Between be used to from side to seal retaining ring together since height difference is formed （1）Extrude the sealing retaining ring supporting surface supported（12）.
- 5. the light-duty self-locking nut of the anti-cold welding of self-lubricating according to claim 1, it is characterised in that：In the internal thread（7） With nut body end face（6）Between be equipped with internal thread chamfering（8）.
- 6. the light-duty self-locking nut of the anti-cold welding of self-lubricating according to claim 1, it is characterised in that：Two mitigate groove side（10） Between angle take 35 °~45 ° between, mitigate groove arc surface（11）With internal thread（7）Thickness is not less than between Major Diam 2.5mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720544597.5U CN207246197U (en) | 2017-05-17 | 2017-05-17 | A kind of light-duty self-locking nut of anti-cold welding of self-lubricating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720544597.5U CN207246197U (en) | 2017-05-17 | 2017-05-17 | A kind of light-duty self-locking nut of anti-cold welding of self-lubricating |
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| Publication Number | Publication Date |
|---|---|
| CN207246197U true CN207246197U (en) | 2018-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720544597.5U Active CN207246197U (en) | 2017-05-17 | 2017-05-17 | A kind of light-duty self-locking nut of anti-cold welding of self-lubricating |
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| CN (1) | CN207246197U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035755A (en) * | 2017-05-17 | 2017-08-11 | 贵州航天精工制造有限公司 | Light-duty self-locking nut of a kind of anti-cold welding of self-lubricating and production and preparation method thereof |
-
2017
- 2017-05-17 CN CN201720544597.5U patent/CN207246197U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035755A (en) * | 2017-05-17 | 2017-08-11 | 贵州航天精工制造有限公司 | Light-duty self-locking nut of a kind of anti-cold welding of self-lubricating and production and preparation method thereof |
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