CN204649412U - A kind of screw fastener head toughness test device and test tool - Google Patents
A kind of screw fastener head toughness test device and test tool Download PDFInfo
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- CN204649412U CN204649412U CN201520330651.7U CN201520330651U CN204649412U CN 204649412 U CN204649412 U CN 204649412U CN 201520330651 U CN201520330651 U CN 201520330651U CN 204649412 U CN204649412 U CN 204649412U
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Abstract
The utility model relates to a kind of screw fastener head toughness test device and test tool.Wherein screw fastener head toughness test device comprises fastener base for supporting tested threaded fastener and for the charger to tested screw fastener head imposed load, fastener base is provided with bar portion jack, the inlet end of bar portion jack is provided with for supporting the head support structure of tested screw fastener head towards the end face of screw rod side, screw fastener head toughness test device also comprises the loading axle between holding of exerting pressure for being supported on tested screw fastener head and charger, the diameter loading axle is 0.8 ~ 1 times of the bar portion diameter of tested threaded fastener.During test, threaded fastener only head needs bearing test load, thus realizes the simulation to actual behaviour in service, and meanwhile, do not need double thread securing member to simulate actual rundown process during test, easy to operate, quick, test efficiency is high, and operation intensity is low.
Description
Technical field
The utility model relates to a kind of screw fastener head toughness test device and test tool.
Background technology
At present, along with the develop rapidly of aerospace field, had increasing people to select aircraft as the vehicles, and the airliner of Ge great airline of China is mainly from the Boeing of import, the aircraft of Air Passenger company production.According to national development needs, the demand that designed, designed produces domestic large-sized civil passenger plane is extremely urgent, and the development relationship of civil aircraft the national economy of China, and in order to ensure passenger safety, the securing member on passenger plane needs to meet strict standard.Such as, on aircraft conventional dormant bolt, its head toughness is to its performance important, and head inefficacy can cause major safety problems, therefore needs to carry out strict test to the head toughness of dormant bolt.
The Chinese patent that application number is 201029068075.8, Authorization Notice No. is CN 201653829 U discloses a kind of screw head toughness testing device, comprise base and be fixed on the test board on base, wherein test board is configured for the fastener base supporting threaded fastener.Base is also fixed with back shaft, and back shaft top is provided with the web joint of overhanging, and web joint is provided with the through hole vertically extended, and in through hole, vertically guiding is equipped with lifting shaft, and lifting shaft lower end is fixed with pie iron block as weight, forms charger.During test, screw is placed on test board, the weight lifting certain altitude of back shaft and its lower end is discharged, weight and lifting shaft is declined fast and clashes into the head of screw, complete and once test.Existing above-mentioned measurement mechanism needs to select suitable weight according to the specification of screw, the impulsive force not easily accurate quantification of the shock generation of weight, and screw cannot realize location, be difficult to simulate screw in actual use stressed, therefore test result can not provide reference significance accurately for the actual use of screw, the reliability in screw use procedure cannot be ensured, be unfavorable for the control to properties of product.
Utility model content
The purpose of this utility model is to provide a kind of screw fastener head toughness test device, and the toughness can simulating the actual behaviour in service double thread fastener head of threaded fastener is tested; Meanwhile, the utility model additionally provides the screw fastener head toughness test frock that a kind of above-mentioned screw fastener head toughness test device uses.
The technical scheme that in the utility model, a kind of screw fastener head toughness test device adopts is: a kind of screw fastener head toughness test device, comprise fastener base for supporting tested threaded fastener and for the charger to tested screw fastener head imposed load, described fastener base is provided with the bar portion jack that the bar portion for tested threaded fastener inserts, the inlet end of described bar portion jack is provided with for supporting the head support structure of tested screw fastener head towards the end face of screw rod side, described screw fastener head toughness test device also comprises the loading axle between holding of exerting pressure for being supported on tested screw fastener head and described charger, the diameter of described loading axle is 0.8 ~ 1 times of the bar portion diameter of tested threaded fastener.
Described head support structure is formed by the bellmouth section of the inlet end being arranged on described bar portion jack, the circular cone that the tested screw fastener head that described bellmouth section has shape and a corresponding countersunk head form fits like a glove towards the shape of the end face of screw rod side.
Described fastener base is rotary structure, and its one end being provided with head support structure is provided with flange, and described flange has the lower support face for being supported on corresponding supporting seat.
The diameter of described bar portion jack is greater than the bar portion diameter 0.002 ~ 0.006inch of corresponding tested threaded fastener.
The technical scheme that in the utility model, screw fastener head toughness test frock adopts is: screw fastener head toughness test frock, comprise the fastener base for supporting tested threaded fastener, described fastener base is provided with the bar portion jack that the bar portion for tested threaded fastener inserts, the inlet end of described bar portion jack is provided with for supporting the head support structure of tested screw fastener head towards the end face of screw rod side, described screw fastener head toughness test frock also comprises the loading axle between holding of exerting pressure for being supported on tested screw fastener head and corresponding charger, the diameter of described loading axle is 0.8 ~ 1 times of the bar portion diameter of tested threaded fastener.
Described head support structure is formed by the bellmouth section of the inlet end being arranged on described bar portion jack, the circular cone that the tested screw fastener head that described bellmouth section has shape and a corresponding countersunk head form fits like a glove towards the shape of the end face of screw rod side.
Described fastener base is rotary structure, and its one end being provided with head support structure is provided with flange, and described flange has the lower support face for being supported on corresponding supporting seat.
The diameter of described bar portion jack is greater than the bar portion diameter 0.002 ~ 0.006inch of corresponding tested threaded fastener.
The utility model adopts technique scheme, the bar portion jack that fastener base is arranged can insert for the bar portion of tested threaded fastener, and the head support structure that the inlet end of described bar portion jack is arranged can support the end face of tested screw fastener head towards screw rod side, described screw fastener head toughness test device also comprises the loading axle between holding of exerting pressure for being supported on tested screw fastener head and described charger, the diameter of described loading axle is 0.8 ~ 1 times of the bar portion diameter of tested threaded fastener, therefore, during test threaded fastener only head need bearing test load, thus the simulation realized actual behaviour in service, simultaneously, double thread securing member is not needed to simulate actual rundown process during test, easy to operate, fast, test efficiency is high, operation intensity is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of fastener base in an embodiment of screw fastener head toughness test frock in the utility model;
Fig. 2 is the structural representation loading axle in an embodiment of screw fastener head toughness test frock in the utility model;
Fig. 3 is the trystate schematic diagram of screw fastener head toughness test device in the utility model;
Fig. 4 is the view after threaded fastener is destroyed.
The name that in figure, each Reference numeral is corresponding is called: 10-fastener base, 11-bar portion jack, 12-bellmouth section, 13-flange, 14-lower support face, and 20-loads axle, 30-dormant bolt, 31-bar portion, 32-head.
Embodiment
In the utility model, an embodiment of screw fastener head toughness test frock is as shown in Fig. 1 ~ Fig. 4, a kind of frock for carrying out toughness test to the dormant bolt 30 that aircraft uses, the loading axle 20 comprising the fastener base 10 for supporting tested dormant bolt 30 and arrange corresponding to the dormant bolt 30 of this specification.
Fastener base 10 is rotary structure, and top is provided with flange 13, and flange 13 has the lower support face 14 for being supported on corresponding supporting seat, forms flange arrangement.During use, fastener base 10 can plug in the corresponding positioning jack on respective support seat, and relies on lower support face 14 and outer peripheral face location, structure is simple, be convenient to processing, easy to loading and unloading, the dormant bolt 30 of different size can be adapted to by the fastener base 10 changing different size.The center of fastener base 10 is provided with the bar portion jack 11 of bar portion 31 insertion of the tested dormant bolt 30 of axially extended confession, the inlet end of bar portion jack 11 has bellmouth section 12, the circular cone that the head 32 that this bellmouth section 12 has a tested dormant bolt 30 of shape and this specification fits like a glove towards the shape of the end face of screw rod side, forms head support structure.During test, the lower surface of the head 32 of tested dormant bolt 30 can with this circular cone close fit, supporting & stablizing, uniform force.The diameter of bar portion jack 11 is greater than the diameter 0.002 ~ 0.006inch in the bar portion 31 of corresponding tested dormant bolt 30, after dormant bolt 30 insertion rod portion jack 11, the gap of 0.001 ~ 0.003inch can be formed between the two, guarantee that the bar portion 31 of dormant bolt 30 does not contact with fastener base 10, avoid affecting test findings.
Loading axle 20 is cylindrical structure, bar portion 31 similar diameters of diameter and corresponding tested dormant bolt 30, for 0.8 ~ 1 times of bar portion 31 diameter of corresponding tested dormant bolt 30, for being supported between the exerting pressure and hold of the end face outside of the head 32 of tested dormant bolt 30 and corresponding charger.During test, this loading axle 20 can directly be supported on dormant bolt 30, aims at dormant bolt 30 after also can using corresponding clamping mechanism clamping, coaxially arranged with dormant bolt 30; In loading procedure, load the effect that axle 20 plays the center transmitting forces of the head 32 to dormant bolt 30, can by the real use state to imposed load simulation dormant bolt 30 outside the head 32 of tested dormant bolt 30.
When using head 32 toughness of above-mentioned screw fastener head toughness test device to tested dormant bolt 30 to test, select suitable fastener base 10 according to tested dormant bolt 30 specification, and this fastener base 10 is plugged realization location in the corresponding positioning jack on respective support seat, then, the bar portion 31 of tested dormant bolt 30 is inserted in the bar portion jack 11 on fastener base 10, and make the head 32 of tested dormant bolt 30 be supported on the circular cone of the inlet end of bar portion jack 11 towards the end face of screw rod side, then, the one end loading axle 20 be supported on the head 32 of tested dormant bolt 30 and make loading axle 20 and tested dormant bolt 30 coaxially arranged, then, use charger to loading axle 20 imposed load, the part making the head 32 of tested dormant bolt 30 correspond to the bar portion 31 of tested dormant bolt 30 is vertically separated with other parts of the head 32 of tested dormant bolt 30 together with the bar portion 31 of tested dormant bolt 30, head 32 forms through hole, dormant bolt 30 is destroyed, head 32 toughness of bolt can be judged according to magnitude of load now, do not need to simulate to dormant bolt 30 the actual behaviour in service that actual rundown process can simulate dormant bolt 30, easy to operate, fast, test efficiency is high, operation intensity is low.
In the utility model, an a kind of embodiment of screw fastener head toughness test device comprises the fastener base 10 for supporting tested threaded fastener, for to the charger of tested screw fastener head 32 imposed load and the loading axle 20 between holding of exerting pressure for being supported on tested screw fastener head 32 and described charger, fastener base 10 is with the fastener base 10 loaded in the axle 20 i.e. embodiment of above-mentioned screw fastener head toughness test frock and load axle 20, charger adopts the pressing machine generally used in prior art, easy and simple to handle, equipment cost is low.Certainly, in other embodiments, charger can replace with other forms, the charger of the weight form such as, adopted in background technology.
In the above-described embodiments, tested threaded fastener is dormant bolt 30, and head support structure is formed by the circular cone of bellmouth section 12, and the inner side end of the tested screw fastener head 32 of the shape of this circular cone and corresponding countersunk head form fits like a glove.In other embodiments of the present utility model, tested threaded fastener can be sunk screw, and head support structure also can replace with other forms, such as, with the circular cone of the inner side end stapled section of tested screw fastener head 32.In addition, fastener base 10 also can replace with other forms, such as axial dimension is greater than the fastener base of threaded fastener axial length, and this fastener base can insert completely for the bar portion 31 of tested threaded fastener and the head 32 of tested threaded fastener is supported in head support structure.
Claims (8)
1. a screw fastener head toughness test device, comprise fastener base for supporting tested threaded fastener and for the charger to tested screw fastener head imposed load, it is characterized in that: described fastener base is provided with the bar portion jack that the bar portion for tested threaded fastener inserts, the inlet end of described bar portion jack is provided with for supporting the head support structure of tested screw fastener head towards the end face of screw rod side, described screw fastener head toughness test device also comprises the loading axle between holding of exerting pressure for being supported on tested screw fastener head and described charger, the diameter of described loading axle is 0.8 ~ 1 times of the bar portion diameter of tested threaded fastener.
2. a kind of screw fastener head toughness test device according to claim 1, it is characterized in that: described head support structure is formed by the bellmouth section of the inlet end being arranged on described bar portion jack, the circular cone that the tested screw fastener head that described bellmouth section has shape and a corresponding countersunk head form fits like a glove towards the shape of the end face of screw rod side.
3. a kind of screw fastener head toughness test device according to claim 1 and 2, it is characterized in that: described fastener base is rotary structure, its one end being provided with head support structure is provided with flange, and described flange has the lower support face for being supported on corresponding supporting seat.
4. a kind of screw fastener head toughness test device according to claim 1 and 2, is characterized in that: the diameter of described bar portion jack is greater than the bar portion diameter 0.002 ~ 0.006inch of corresponding tested threaded fastener.
5. screw fastener head toughness test frock, comprise the fastener base for supporting tested threaded fastener, it is characterized in that: described fastener base is provided with the bar portion jack that the bar portion for tested threaded fastener inserts, the inlet end of described bar portion jack is provided with for supporting the head support structure of tested screw fastener head towards the end face of screw rod side, described screw fastener head toughness test frock also comprises the loading axle between holding of exerting pressure for being supported on tested screw fastener head and corresponding charger, the diameter of described loading axle is 0.8 ~ 1 times of the bar portion diameter of tested threaded fastener.
6. screw fastener head toughness test frock according to claim 5, it is characterized in that: described head support structure is formed by the bellmouth section of the inlet end being arranged on described bar portion jack, the circular cone that the tested screw fastener head that described bellmouth section has shape and a corresponding countersunk head form fits like a glove towards the shape of the end face of screw rod side.
7. the screw fastener head toughness test frock according to claim 5 or 6, it is characterized in that: described fastener base is rotary structure, its one end being provided with head support structure is provided with flange, and described flange has the lower support face for being supported on corresponding supporting seat.
8. the screw fastener head toughness test frock according to claim 5 or 6, is characterized in that: the diameter of described bar portion jack is greater than the bar portion diameter 0.002 ~ 0.006inch of corresponding tested threaded fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520330651.7U CN204649412U (en) | 2015-05-20 | 2015-05-20 | A kind of screw fastener head toughness test device and test tool |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520330651.7U CN204649412U (en) | 2015-05-20 | 2015-05-20 | A kind of screw fastener head toughness test device and test tool |
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| CN204649412U true CN204649412U (en) | 2015-09-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865059A (en) * | 2015-05-20 | 2015-08-26 | 河南航天精工制造有限公司 | Apparatus, method and tool for testing head toughness of threaded fasteners |
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2015
- 2015-05-20 CN CN201520330651.7U patent/CN204649412U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865059A (en) * | 2015-05-20 | 2015-08-26 | 河南航天精工制造有限公司 | Apparatus, method and tool for testing head toughness of threaded fasteners |
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