CN204202991U - A kind of small punch test magnetic holding device - Google Patents
A kind of small punch test magnetic holding device Download PDFInfo
- Publication number
- CN204202991U CN204202991U CN201420658252.9U CN201420658252U CN204202991U CN 204202991 U CN204202991 U CN 204202991U CN 201420658252 U CN201420658252 U CN 201420658252U CN 204202991 U CN204202991 U CN 204202991U
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- China
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- electromagnet
- platen
- pressing disc
- groove
- holding device
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Abstract
The utility model discloses a kind of small punch test magnetic holding device, it comprises platen and is positioned at the pressing disc below platen, both sides, described upper platen bottom are provided with two symmetrical mounting holes, and be provided with spring in described mounting hole, the bottom of described spring is connected with iron block; Described pressing disc is provided with DC electromagnet, and N, S pole of this DC electromagnet lays respectively at immediately below two iron blocks; Described upper platen bottom is provided with columniform projection, and the pressing disc top matched is provided with the groove of column type, and during use, a described protruding part is embedded in this groove, leaves the gap for placing sample between projection and groove.The utility model is improved by structure, be provided with DC electromagnet and iron block adaptive with it, the relative motion between upper and lower platen is controlled by the break-make controlling DC electromagnet, and then compress micro-test sample, namely the clamping controlling upper and lower platen with switch be separated, saved the time spent on fixing micro-test sample greatly.
Description
Technical field
The utility model relates to a kind of magnetic holding device of small punch test, can be used for quick and convenient, uniform fixing small punch test micro-test sample of exerting oneself.
Background technology
Small size effect is that a kind of jumper bar A that utilizes is with certain speed punching press micro-test sample A, and record micro-test sample 1 from being deformed to load-displacement (or deformation deflection) data lost efficacy whole process, and analyze the test method drawing the various performance parameter of material whereby.Its typical device schematic diagram as shown in Figure 1.Testing micro-test sample used can be circular or square, and its size is little, is generally the thin slice of diameter or length of side 3mm ~ 10mm, thickness 0.1mm ~ 0.5mm.Test can obtain the relation curve between load-displacement, then utilizes various theory and analytical approach, the Given information that Curves contains can be converted into a series of required data such as intensity, plasticity, fracture toughness and croop property.
As shown in Figure 1, we use platen A 3 and pressing disc A 4 to be clipped in indent A 9 by micro-test sample 1, and then use screw A 8 by fastening for upper platen A 3 and pressing disc A 4.In use procedure, our discovery screw 8 fixes fixture following shortcoming:
1, operation inconvenience.Screw A 8 is screwed into platen waste time and energy, also needs in process to use the complementary tools such as spanner.On fixture, processing bolt hole can increase cost undoubtedly.
2, different people is in the process of trip bolt A 8, and dynamics used is uncontrollable, and sample discontinuity.Fixture is different to the load of sample, firmly too large, even likely damages sample.Firmly too little, can relative movement be produced between sample and fixture in process of the test.This can directly cause the inaccurate of test figure.Therefore, be necessary existing fixture retrofit, with convenient and swift and fixing sample and make its uniform stressed.
Utility model content
The technical problems to be solved in the utility model is to provide that a kind of structure is simple, easy to use, measurement result accurately, utilize electromagnetic force to carry out fastening small punch test magnetic holding device to sample.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of small punch test magnetic holding device, its gordian technique is: it comprises platen and is positioned at the pressing disc below platen, both sides, described upper platen bottom are provided with two symmetrical mounting holes, be provided with spring in described mounting hole, the bottom of described spring is connected with iron block;
Described pressing disc is provided with DC electromagnet, and N, S pole of this DC electromagnet lays respectively at immediately below two iron blocks;
Described upper platen bottom is provided with columniform projection, and the pressing disc top matched is provided with the groove of column type, and during use, a described protruding part is embedded in this groove, leaves the gap for placing sample between projection and groove.
Preferably, described DC electromagnet is U-shaped electromagnet.
Preferably, described upper platen and pressing disc are nonmagnetic substance making.
The beneficial effect adopting technique scheme to produce is: the utility model is improved by structure, be provided with DC electromagnet and iron block adaptive with it, the relative motion between upper and lower platen is controlled by the break-make controlling DC electromagnet, and then compress micro-test sample, namely the clamping controlling upper and lower platen with switch be separated, saved the time spent on fixing micro-test sample greatly.Moreover constant, even electromagnetic force ensure that the correctness of micro-test sample data acquisition in process of the test, reduce the error of test greatly.
Accompanying drawing explanation
Fig. 1 is that typical small punch test bolted fixture fixes micro-test sample status architecture schematic diagram at present;
Fig. 2 fixes micro-test sample releasing orientation schematic diagram for this novel small punch test machine electromagnetic switch fixture;
Fig. 3 fixes micro-test sample clamped condition schematic diagram for this novel small punch test machine electromagnetic switch fixture;
Wherein, in Fig. 1,101, micro-test sample A, 102, jumper bar A, 103, upper platen A, 104, pressing disc A, 108, screw A, 109, indent;
In Fig. 2 and Fig. 3,1, micro-test sample, 2, jumper bar, 3, upper platen, 4, pressing disc, 5, DC electromagnet, 6, spring, 7, iron block, 8, screw, 9, groove, 10, protruding.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated.
See accompanying drawing 2 and accompanying drawing 3, the pressing disc 4 that the present embodiment comprises platen 3 and is positioned at below platen 3, both sides, described upper platen 3 bottom are provided with two symmetrical mounting holes, and be provided with spring 6 in described mounting hole, the bottom of described spring 6 is connected with iron block 7; Described pressing disc 4 internal fixtion has DC electromagnet 5, this DC electromagnet 5 is connected with pressing disc 4 by screw, or as shown in the figure, pressing disc 4 is offered the mounting hole with DC electromagnet 5 form fit, then this DC electromagnet 5 is assembled fixing inside, N, S pole of this DC electromagnet 5 lays respectively at immediately below two iron blocks 7; Described upper platen 3 bottom is provided with columniform protruding 10, and pressing disc 4 top matched is provided with the groove 9 of column type, and during use, described protruding 10 parts are embedded in this groove, leaves the gap for placing micro-test sample 1 between protruding 10 and groove 9.
Principle of the present utility model:
Former fixture makes to be screwed by it to be improved as electromagnetic switch controls fixing, after utilizing DC electromagnet 5 to be energized, the two poles of the earth produce ferromagnetic absorption affinity characteristic, magnetic force is produced to the iron block 7 being fixed on upper platen 3, under the effect of magnetic force, spring 6 produces deformation, and iron block 7 is tightly adsorbed on DC electromagnet 5 magnetic pole.This power same purpose, in upper platen 3, makes it produce constant, uniform clamping force and fixes, clamps micro-test sample 1.After power-off, magnetic force disappears, and spring 6 resets, and under the effect of spring contraction power, iron block 7 is separated with magnetic pole, and upper platen 3 and pressing disc 4 can conveniently separate.
During use, described upper platen 3 is nonmagnetic substance, built-in iron block 7, and there is spring 6 iron block upper end, and upper platen 3 is connected with iron block 7 by spring 6 two ends.Iron block 7 position and DC electromagnet 5N, S are extremely mutually corresponding.Pressing disc 4 adopts nonmagnetic substance, is rigidly connected with DC electromagnet 5, and described pressing disc 4 is connected with ground, lower end or other firm banking.
The course of work of the present utility model is: after energising, and high-intensity magnetic field appears in the DC electromagnet 5 being fixed on pressing disc 4, produces magnetic force to the iron block 7 being fixed on upper platen, and iron block 7 pulls spring 6 to produce deformation, and then iron block 7 is tightly adsorbed on DC electromagnet 5 magnetic pole.The pulling force of spring 6 makes platen 3 produce constant, uniform clamping force to fix, clamp micro-test sample 1.After power-off, magnetic force disappears, and spring 6 resets, and under the effect of spring 6 convergent force, iron block is being separated with magnetic pole, and upper platen 3 can conveniently separate.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the invention, can realize in other embodiments.Therefore, the invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (3)
1. a small punch test magnetic holding device, it is characterized in that: it comprises platen (3) and is positioned at the pressing disc (4) of platen (3) below, described upper platen (3) both sides, bottom are provided with two symmetrical mounting holes, be provided with spring (6) in described mounting hole, the bottom of described spring (6) is connected with iron block (7);
Described pressing disc (4) is provided with DC electromagnet (5), and N, S pole of this DC electromagnet (5) lays respectively at immediately below two iron blocks (7);
Described upper platen (3) bottom is provided with columniform projection (10), pressing disc (4) top matched is provided with the groove (9) of column type, during use, described projection (10) part is embedded in this groove (9), leaves the gap for placing micro-test sample (1) between protruding (10) and groove.
2. small punch test magnetic holding device according to claim 1, is characterized in that: the iron core of described DC electromagnet (5) is U-shaped magnet.
3. small punch test magnetic holding device according to claim 1, is characterized in that: described upper platen (3) and pressing disc (4) are nonmagnetic substance and make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420658252.9U CN204202991U (en) | 2014-11-06 | 2014-11-06 | A kind of small punch test magnetic holding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420658252.9U CN204202991U (en) | 2014-11-06 | 2014-11-06 | A kind of small punch test magnetic holding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204202991U true CN204202991U (en) | 2015-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420658252.9U Expired - Fee Related CN204202991U (en) | 2014-11-06 | 2014-11-06 | A kind of small punch test magnetic holding device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204202991U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106491298A (en) * | 2016-10-12 | 2017-03-15 | 王鸿涛 | A kind of lift nuclear medicine che injection discarded object bucket fixing device |
| TWI584784B (en) * | 2015-10-21 | 2017-06-01 | 國立交通大學 | Telescopic sensor device |
| CN106918501A (en) * | 2016-11-25 | 2017-07-04 | 华东理工大学 | Many small jumper bar sample holding devices of size |
| CN108225902A (en) * | 2018-03-15 | 2018-06-29 | 国电锅炉压力容器检验中心 | A kind of station boiler small punch test device |
| CN110057663A (en) * | 2019-02-28 | 2019-07-26 | 西南交通大学 | Electromagnetic type split-Hopkinson torsional bar clamps and release device |
| CN110561266A (en) * | 2019-10-09 | 2019-12-13 | 无锡威孚马山油泵油嘴有限公司 | Valve element lapping clamp |
| CN110658058A (en) * | 2019-10-21 | 2020-01-07 | 华东理工大学 | Long strip-shaped small punch rod sample fixture device |
-
2014
- 2014-11-06 CN CN201420658252.9U patent/CN204202991U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI584784B (en) * | 2015-10-21 | 2017-06-01 | 國立交通大學 | Telescopic sensor device |
| CN106491298A (en) * | 2016-10-12 | 2017-03-15 | 王鸿涛 | A kind of lift nuclear medicine che injection discarded object bucket fixing device |
| CN106918501A (en) * | 2016-11-25 | 2017-07-04 | 华东理工大学 | Many small jumper bar sample holding devices of size |
| CN108225902A (en) * | 2018-03-15 | 2018-06-29 | 国电锅炉压力容器检验中心 | A kind of station boiler small punch test device |
| CN110057663A (en) * | 2019-02-28 | 2019-07-26 | 西南交通大学 | Electromagnetic type split-Hopkinson torsional bar clamps and release device |
| CN110561266A (en) * | 2019-10-09 | 2019-12-13 | 无锡威孚马山油泵油嘴有限公司 | Valve element lapping clamp |
| CN110561266B (en) * | 2019-10-09 | 2024-07-23 | 无锡威孚马山油泵油嘴有限公司 | Valve core lapping fixture |
| CN110658058A (en) * | 2019-10-21 | 2020-01-07 | 华东理工大学 | Long strip-shaped small punch rod sample fixture device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20161106 |