CN201412430Y - Auto-locking turnbuckle for reinforcing the intensity of low-intensity engineering material matrix screw hole - Google Patents

Auto-locking turnbuckle for reinforcing the intensity of low-intensity engineering material matrix screw hole Download PDF

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Publication number
CN201412430Y
CN201412430Y CN2009203024958U CN200920302495U CN201412430Y CN 201412430 Y CN201412430 Y CN 201412430Y CN 2009203024958 U CN2009203024958 U CN 2009203024958U CN 200920302495 U CN200920302495 U CN 200920302495U CN 201412430 Y CN201412430 Y CN 201412430Y
Authority
CN
China
Prior art keywords
turnbuckle
intensity
screw
matrix
swivel nut
Prior art date
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.)
Expired - Fee Related
Application number
CN2009203024958U
Other languages
Chinese (zh)
Inventor
刘诗定
谢丹贤
朱永红
李燚
杨鑫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guizhou Aerospace Precision Products Co Ltd
Original Assignee
Guizhou Aerospace Precision Products Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guizhou Aerospace Precision Products Co Ltd filed Critical Guizhou Aerospace Precision Products Co Ltd
Priority to CN2009203024958U priority Critical patent/CN201412430Y/en
Application granted granted Critical
Publication of CN201412430Y publication Critical patent/CN201412430Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides an auto-locking turnbuckle for reinforcing the intensity of low-intensity engineering material matrix screw hole, comprising a turnbuckle with an external screw and an internal screw hole, an anti-rotation saw tooth arranged on the external cylindrical surface at one end of the turnbuckle, wherein the external screw of the turnbuckle is common screw and the screw in theinternal screw hole of the turnbuckle is auto-locking turnbuckle. The turnbuckle hole at one end with the anti-rotation saw tooth expands by way of die-stamping and compressing, the anti-rotation sawtooth is imbedded into the matrix. The turnbuckle is reliably connected with the matrix only by processing the external screw of the turnbuckle into common screw in no need of changing the screw connection between the turnbuckle and the matrix into interference fit screw connection, therefore the requirement on process accuracy of the external screw of the turnbuckle is greatly reduced. The auto-locking turnbuckle has features of reliable and not-easily loose connection with the matrix, easy processing, low production cost, convenient assembly and high assembly efficiency.

Description

A kind of self-locking thread insert that is used to strengthen low-intensity engineering material matrix tapped hole intensity
Technical field
The utility model relates to a kind of self-locking thread insert that is used to strengthen low-intensity engineering material matrix tapped hole intensity, belongs 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.
The model utility content
The purpose of this utility model is: provide a kind of that do not need to make the interference fit screw thread and be connected reliably, be difficult for the self-locking thread insert that loosening, easy processing, low being used to of fabricating cost strengthen low-intensity engineering material matrix tapped hole intensity with matrix, to overcome the deficiencies in the prior art.
The utility model is achieved in that and comprises the swivel nut that has common outside thread and interior threaded hole, is 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, when using the utility model, only need the swivel nut hole that the utility model has anti-rotation sawtooth one end to be swollen by the punch die pressing mode, 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 utility model compared with prior art, the utility model 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 utility model 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 utility model pressurizeed through punch die;
Fig. 3 is the structural representation of the utility model swivel nut;
Fig. 4 is the structural representation when being provided with inner spline groove in the swivel nut interior threaded hole of the present utility model;
Fig. 5 is the structural representation during hex slot in being provided with in the swivel nut interior threaded hole of the present utility model.
Embodiment
Embodiment of the present utility model: when strengthening the operation of low-intensity engineering material matrix tapped hole intensity, adopt self-locking thread insert of the present utility model to operate, promptly produce self-locking thread insert of the present utility model 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 OCr17Ni4CuNb 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 utility model; 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 (3)

1. a self-locking thread insert that is used to strengthen low-intensity engineering material matrix tapped hole intensity 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); 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.
2. the self-locking thread insert that is used to strengthen low-intensity engineering material matrix tapped hole intensity according to claim 1 is characterized in that: also be provided with inner spline groove (3) in the tapped hole of swivel nut (1).
3. the self-locking thread insert that is used to strengthen low-intensity engineering material matrix tapped hole intensity according to claim 1 is characterized in that: also be provided with interior hex slot (4) in the tapped hole of swivel nut (1).
CN2009203024958U 2009-04-23 2009-04-23 Auto-locking turnbuckle for reinforcing the intensity of low-intensity engineering material matrix screw hole Expired - Fee Related CN201412430Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009203024958U CN201412430Y (en) 2009-04-23 2009-04-23 Auto-locking turnbuckle for reinforcing the intensity of low-intensity engineering material matrix screw hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009203024958U CN201412430Y (en) 2009-04-23 2009-04-23 Auto-locking turnbuckle for reinforcing the intensity of low-intensity engineering material matrix screw hole

Publications (1)

Publication Number Publication Date
CN201412430Y true CN201412430Y (en) 2010-02-24

Family

ID=41714314

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009203024958U Expired - Fee Related CN201412430Y (en) 2009-04-23 2009-04-23 Auto-locking turnbuckle for reinforcing the intensity of low-intensity engineering material matrix screw hole

Country Status (1)

Country Link
CN (1) CN201412430Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103758842A (en) * 2014-01-29 2014-04-30 广西玉柴机器股份有限公司 Thread bushing structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103758842A (en) * 2014-01-29 2014-04-30 广西玉柴机器股份有限公司 Thread bushing structure

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100224

Termination date: 20140423