CN203858156U - Clamp device for measuring shear strength of lapped joint - Google Patents
Clamp device for measuring shear strength of lapped joint Download PDFInfo
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- CN203858156U CN203858156U CN201420286554.8U CN201420286554U CN203858156U CN 203858156 U CN203858156 U CN 203858156U CN 201420286554 U CN201420286554 U CN 201420286554U CN 203858156 U CN203858156 U CN 203858156U
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- ladder
- plane
- lap joint
- measuring
- vertical plane
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Abstract
The utility model discloses a clamp device for measuring the shear strength of a lapped joint. The clamp device comprises an upper clamp and a lower clamp which are symmetrically arranged up and down, wherein cylindrical sleeves are arranged outside the upper clamp and the lower clamp in a sleeving manner, the upper ends and the lower ends of the cylindrical sleeves are open, the upper clamp comprises a cylindrical upper press head, a step-shaped upper notch is formed in the lower half portion of the upper press head, the lower clamp comprises a cylindrical lower press head, and a step-shaped lower notch matched with the upper notch is formed in the lower half portion of the lower press head; the measured lapped joint is arranged between the upper press head and the lower press head. The clamp device disclosed by the utility model is capable of accurately measuring the shear strength of the lapped joint of brazing and diffusion welding between metal plate materials, and suitable for measurements on the shear strengths of joints made from different materials.
Description
Technical field
The utility model belongs to welding technical field of measurement and test, relates in particular to a kind of for measuring the grip device of lap joint shear resistance.
Background technology
In welding technology field, especially, in soldering or Pervasion Weld Technology field, the lap joint that often need to form welding carries out the measurement of shear resistance.GB/T 11363-2008 < < soldered fitting Strength Testing Methods > > have been issued in national quality supervision and check quarantine general bureau of the People's Republic of China (PRC) and Standardization Administration of China's cooperation.In this test method, be that two samples that processed by standard are overlapped, two ends add and are held on cupping machine along in the other direction to drawing, until sample drawing crack.Yet this test method has individual defect clearly, in the process stretching, what bore on the surface, joint place of lap joint is that cross stretches, rather than forward stretches uniformly, distortion neither isotropy, if sample plastic yield does not occur and ruptures under the effect of power, joint area is to rupture under the action effect of moment, and recording result is not joint actual shearing power; If there is plastic yield and rupture in sample under the effect of power, joint is to rupture under the acting in conjunction of component, shearing force and the joint actual shearing power of measuring gained are not inconsistent, thereby cannot reflect accurately the shear resistance of joint between metal blank, this test method is high to specimen size requirement in addition, processing is difficult for, and also wastes material simultaneously.
The problem existing in order to improve prior art, people have proposed various solutions.For example, at correlative technology field, Chinese patent literature discloses a kind of test fixture for shear intensity of joint [application number: 200420086454.7], it comprises upper fastener, lower fastener and sleeve, sleeve is upper and lower penetrating drum, and this scheme has been improved prior art to a certain extent, has improved the accuracy of measuring, but still there are a lot of shortcomings in this scheme, as: sample thickness is immutable; Be only applicable to relatively hard materials, can not be suitable for and softer material, if reason is sample, mother metal is softer, yield strength is low, the shear resistance of lap joint is greater than the yield strength of sample, and in shear test process, yield deformation can occur sample before cutting off so, increases test findings error; Can not Real Time Observation to sample shear history; To fixture wearing and tearing irreparability itself.
Utility model content
The purpose of this utility model is for weak point of the prior art, provide a kind of for measuring the grip device of lap joint shear resistance, the shear resistance of the lap joint of soldering and diffusion welding between can Measurement accuracy metal blank, and the measurement of the shearing strength of joint of applicable different materials.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: for measuring the grip device of lap joint shear resistance, it comprises upper and lower symmetrically arranged upper fixture and lower clamp, described upper fixture and lower clamp are arranged with columnar sleeve outward, the upper and lower side of described columnar sleeve opens wide, described upper fixture comprises columniform seaming chuck, the Lower Half of described seaming chuck offers step-like upper breach, described lower clamp comprises columniform push-down head, and the Lower Half of described push-down head offers the step-like lower breach matching with upper breach; Tested lap joint is arranged between seaming chuck and push-down head.
Described upper breach comprises the first ladder plane of structure, the second ladder vertical plane, the 3rd ladder plane of structure, the four-step vertical plane that is arranged in order from top to bottom setting; Described lower breach comprises the 5th ladder vertical plane, the 6th ladder plane of structure, the 7th ladder vertical plane, the 8th ladder plane of structure that is arranged in order from top to bottom setting; Described the second ladder vertical plane is corresponding with described the 7th ladder vertical plane left and right and leave gap, and the 3rd described ladder plane of structure and the 6th described ladder plane of structure are corresponding up and down.
The joint area upper surface of described tested lap joint contacts with the 3rd ladder plane of structure, and the joint area lower surface of described tested lap joint contacts with the 6th ladder plane of structure.
On described four-step vertical plane and the 5th ladder vertical plane, offer threaded hole, in described threaded hole, be provided with housing screw.
On described the 3rd ladder plane of structure and described the 6th ladder plane of structure, be all fixedly installed hard blade.
The connecting portion of connecting portion, the 5th ladder vertical plane and the 6th ladder plane of structure of described the 3rd ladder plane of structure and four-step vertical plane all offers groove, and described hard blade is embedded in described groove.
The joint area upper surface of described tested lap joint contacts with the hard blade arranging on the 3rd ladder plane of structure, and the joint area lower surface of described tested lap joint contacts with the hard blade arranging on the 6th ladder plane of structure.
On described sleeve, offer for observing the window of tested lap joint.
The upper end of described seaming chuck is fixedly installed platen, and the lower end of described push-down head is fixedly installed pressing disc.
The beneficial effects of the utility model:
1, in the utility model, the joint area upper surface of tested lap joint contacts with the 3rd ladder plane of structure, the joint area lower surface of tested lap joint contacts with the 6th ladder plane of structure, the distortion that this design can overcome weld seam place shear surface is not the defect of isotropic homogeneous deformation, make weld seam in simple shearing condition, measurement result is more accurate, more meet theoretical value, and this design not only goes for sample mother metal relatively hard materials, also applicable to the softer material of sample mother metal, overcome the defect of prior art scheme to materials limitations in background technology,
2, the utility model is lower to the mechanical property requirements of the material of producing device itself, (because the compressive strength of material is greater than the tensile strength of material, it is intensity that the version < < of Tongji University mechanics of materials > > has the compressive strength of mentioning hard brittle material to be far longer than tension), low cost of manufacture, easy to utilize;
3, the utility model is less to the dimensional requirement of tested lap joint, can make up the defect of GB/T 11363-2008 standard pilot proved recipe method waste materials;
4, in the utility model, on four-step vertical plane and the 5th ladder vertical plane, offer threaded hole, in described threaded hole, be provided with housing screw, this design makes the utility model can be suitable for the sample of the thickness in certain limit, and the fit applications of housing screw and threaded hole can overcome the nonadjustable defect of sample thickness;
5, on sleeve, offer for observing the window of tested lap joint, can Real Time Observation shear history;
6, in the utility model, on the 3rd ladder plane of structure and described the 6th ladder plane of structure, be all fixedly installed hard blade, the joint area upper surface of tested lap joint contacts with the hard blade arranging on the 3rd ladder plane of structure, the joint area lower surface of described tested lap joint contacts with the hard blade arranging on the 6th ladder plane of structure, the hardness of hard blade is high, wear-resistant, hard blade can be changed simultaneously, has avoided sample in test process fixture itself to be caused to the wearing and tearing of irreparability;
7, the upper end of seaming chuck is fixedly installed platen, the lower end of described push-down head is fixedly installed pressing disc, during test, upper platen contacts with cupping machine with pressing disc, the wearing and tearing that in test process, cupping machine causes fixture itself have been avoided, due to the diameter of platen, be greater than the diameter of major part simultaneously, guaranteed the stability in process of the test.
Accompanying drawing explanation
Fig. 1 is structural front view of the present utility model;
Fig. 2 is structure left view of the present utility model;
Fig. 3 is the structural representation of upper fixture in the utility model;
Fig. 4 is the structural representation of lower clamp in the utility model;
Fig. 5 is fundamental diagram of the present utility model.
Embodiment
As shown in Figures 1 to 5, of the present utility model for measuring the grip device of lap joint shear resistance, it comprises upper and lower symmetrically arranged upper fixture and lower clamp, upper fixture and lower clamp are arranged with columnar sleeve 6 outward, the upper and lower side of columnar sleeve 6 opens wide, upper fixture comprises columniform seaming chuck 3, the Lower Half of seaming chuck 3 offers step-like upper breach, described upper breach comprises the first ladder plane of structure 12 that is arranged in order from top to bottom setting, the second ladder vertical plane 13, the 3rd ladder plane of structure 14, four-step vertical plane 15, lower clamp comprises columniform push-down head 10, the Lower Half of push-down head 10 offers the step-like lower breach matching with upper breach, described lower breach comprises the 5th ladder vertical plane 16 that is arranged in order from top to bottom setting, the 6th ladder plane of structure 17, the 7th ladder vertical plane 18, the 8th ladder plane of structure 19, the second ladder vertical plane 13 is corresponding with the 7th ladder vertical plane 18 left and right and leave gap, the 3rd ladder plane of structure 14 and the 6th ladder plane of structure 17 are corresponding up and down, on four-step vertical plane 15 and the 5th ladder vertical plane 16, offer threaded hole 9, in described threaded hole 9, be provided with housing screw 8.Tested lap joint 5 is arranged between seaming chuck 3 and push-down head 10, and the joint area upper surface of tested lap joint 5 contacts 14 with the 3rd ladder plane of structure, and the joint area lower surface of tested lap joint 5 contacts with the 6th ladder plane of structure 17.
As a kind of technical scheme of comparatively optimizing, in the present embodiment, on the 3rd ladder plane of structure 14 and the 6th ladder plane of structure 17, be all fixedly installed hard blade 4, the connecting portion of the 3rd ladder plane of structure 14 and four-step vertical plane 15, the connecting portion of the 5th ladder vertical plane 16 and the 6th ladder plane of structure 17 all offers groove 20, described hard blade 4 is embedded in described groove 20, the joint area upper surface of tested lap joint 5 contacts with the hard blade 4 arranging on the 3rd ladder plane of structure 14, the joint area lower surface of tested lap joint 5 contacts with the hard blade 4 arranging on the 6th ladder plane of structure 17, on sleeve 6, offer for observing the window 11 of tested lap joint, the upper end of seaming chuck 3 is fixedly installed platen 2, the lower end of push-down head 10 is fixedly installed pressing disc 7.
Tested lap joint 5 is comprised of two rectangle style plates, two sample plate consistent size, and two rectangle sample lap brazing or diffusion welding are welded together, and sample aligns at Width, and the lap of splice requires size corresponding with fixture.
During the utility model work, tested lap joint 5 is placed between seaming chuck 3 and push-down head 10, the joint area upper surface of tested lap joint 5 contacts 14 with the 3rd ladder plane of structure, the joint area lower surface of tested lap joint 5 contacts with the 6th ladder plane of structure 17, cover upper bush 6, is fixed together tested lap joint 5 and upper and lower fixture by housing screw 8; Upper and lower fixture is placed on cupping machine 1, upper platen 2 contacts with cupping machine 1 with pressing disc 7 again, cupping machine 1 with constant extrusion speed Slow loading until the welding seam breaking of tested lap joint 5, load during record fracture.
Cupping machine 1 carries out Slow loading with the speed of 0.5mm/min, the sheet thickness of rectangle sample, between 1-3 millimeter, requires that just face is bright and clean smooth, is not corroded, the load range 100KN of cupping machine 1, sturdy and durable, the large load test system of frame.
Claims (9)
1. for measuring the grip device of lap joint shear resistance, it comprises upper and lower symmetrically arranged upper fixture and lower clamp, described upper fixture and lower clamp are arranged with columnar sleeve outward, the upper and lower side of described columnar sleeve opens wide, it is characterized in that: described upper fixture comprises columniform seaming chuck, the Lower Half of described seaming chuck offers step-like upper breach, described lower clamp comprises columniform push-down head, and the Lower Half of described push-down head offers the step-like lower breach matching with upper breach; Tested lap joint is arranged between seaming chuck and push-down head.
2. according to claim 1 for measuring the grip device of lap joint shear resistance, it is characterized in that: described upper breach comprises the first ladder plane of structure, the second ladder vertical plane, the 3rd ladder plane of structure, the four-step vertical plane that is arranged in order from top to bottom setting; Described lower breach comprises the 5th ladder vertical plane, the 6th ladder plane of structure, the 7th ladder vertical plane, the 8th ladder plane of structure that is arranged in order from top to bottom setting; Described the second ladder vertical plane is corresponding with described the 7th ladder vertical plane left and right and leave gap, and the 3rd described ladder plane of structure and the 6th described ladder plane of structure are corresponding up and down.
3. according to claim 2 for measuring the grip device of lap joint shear resistance, it is characterized in that: the joint area upper surface of described tested lap joint contacts with the 3rd ladder plane of structure, the joint area lower surface of described tested lap joint contacts with the 6th ladder plane of structure.
4. according to claim 3 for measuring the grip device of lap joint shear resistance, it is characterized in that: on described four-step vertical plane and the 5th ladder vertical plane, offer threaded hole, in described threaded hole, be provided with housing screw.
According to described in claim 3 or 4 for measuring the grip device of lap joint shear resistance, it is characterized in that: on described the 3rd ladder plane of structure and described the 6th ladder plane of structure, be all fixedly installed hard blade.
6. according to claim 5 for measuring the grip device of lap joint shear resistance, it is characterized in that: the connecting portion of connecting portion, the 5th ladder vertical plane and the 6th ladder plane of structure of described the 3rd ladder plane of structure and four-step vertical plane all offers groove, and described hard blade is embedded in described groove.
7. according to claim 6 for measuring the grip device of lap joint shear resistance, it is characterized in that: the joint area upper surface of described tested lap joint contacts with the hard blade arranging on the 3rd ladder plane of structure, the joint area lower surface of described tested lap joint contacts with the hard blade arranging on the 6th ladder plane of structure.
8. according to claim 1 for measuring the grip device of lap joint shear resistance, it is characterized in that: on described sleeve, offer for observing the window of tested lap joint.
9. according to claim 1 for measuring the grip device of lap joint shear resistance, it is characterized in that: the upper end of described seaming chuck is fixedly installed platen, the lower end of described push-down head is fixedly installed pressing disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420286554.8U CN203858156U (en) | 2014-05-26 | 2014-05-26 | Clamp device for measuring shear strength of lapped joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420286554.8U CN203858156U (en) | 2014-05-26 | 2014-05-26 | Clamp device for measuring shear strength of lapped joint |
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| CN203858156U true CN203858156U (en) | 2014-10-01 |
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| CN201420286554.8U Expired - Fee Related CN203858156U (en) | 2014-05-26 | 2014-05-26 | Clamp device for measuring shear strength of lapped joint |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729913A (en) * | 2015-04-20 | 2015-06-24 | 哈尔滨工业大学（威海） | Shear testing fixture for brazed test pieces |
| CN104990810A (en) * | 2015-07-03 | 2015-10-21 | 河南机电高等专科学校 | Connector shear strength testing device |
| CN105466762A (en) * | 2015-12-17 | 2016-04-06 | 中国电力科学研究院 | Aluminum sheet substrate for coating shearing strength test and test sample thereof |
| CN106378526A (en) * | 2016-08-18 | 2017-02-08 | 中国科学院力学研究所 | Experimental device applicable to high-heating-rate diffusion welding |
| CN107907403A (en) * | 2017-12-01 | 2018-04-13 | 中国航发沈阳黎明航空发动机有限责任公司 | For measuring the fixing device and its measuring method of electric resistance welding joint bending stiffness |
| CN110441134A (en) * | 2019-08-15 | 2019-11-12 | 攀钢集团攀枝花钢铁研究院有限公司 | The clamping tooling and detection method of cross spot welding workpiece tensile property detection |
| CN114235576A (en) * | 2021-12-16 | 2022-03-25 | 中南大学 | Method for qualitatively analyzing weakest interface of multilayer heterogeneous gradient material by using single-shear stretching method |
-
2014
- 2014-05-26 CN CN201420286554.8U patent/CN203858156U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729913A (en) * | 2015-04-20 | 2015-06-24 | 哈尔滨工业大学（威海） | Shear testing fixture for brazed test pieces |
| CN104729913B (en) * | 2015-04-20 | 2018-10-02 | 哈尔滨工业大学（威海） | A kind of soldering test specimen shearing test clamp |
| CN104990810A (en) * | 2015-07-03 | 2015-10-21 | 河南机电高等专科学校 | Connector shear strength testing device |
| CN105466762A (en) * | 2015-12-17 | 2016-04-06 | 中国电力科学研究院 | Aluminum sheet substrate for coating shearing strength test and test sample thereof |
| CN106378526A (en) * | 2016-08-18 | 2017-02-08 | 中国科学院力学研究所 | Experimental device applicable to high-heating-rate diffusion welding |
| CN106378526B (en) * | 2016-08-18 | 2018-12-21 | 中国科学院力学研究所 | A kind of experimental provision can be used for high heating rate Diffusion Welding |
| CN107907403A (en) * | 2017-12-01 | 2018-04-13 | 中国航发沈阳黎明航空发动机有限责任公司 | For measuring the fixing device and its measuring method of electric resistance welding joint bending stiffness |
| CN110441134A (en) * | 2019-08-15 | 2019-11-12 | 攀钢集团攀枝花钢铁研究院有限公司 | The clamping tooling and detection method of cross spot welding workpiece tensile property detection |
| CN114235576A (en) * | 2021-12-16 | 2022-03-25 | 中南大学 | Method for qualitatively analyzing weakest interface of multilayer heterogeneous gradient material by using single-shear stretching method |
| CN114235576B (en) * | 2021-12-16 | 2023-11-10 | 中南大学 | Method for qualitatively analyzing weakest interface of multilayer heterogeneous gradient material by stretching single shear method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 Termination date: 20160526 |