CN105784502A - Tooling equipment for three-point bending test - Google Patents
Tooling equipment for three-point bending test Download PDFInfo
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- CN105784502A CN105784502A CN201410843811.8A CN201410843811A CN105784502A CN 105784502 A CN105784502 A CN 105784502A CN 201410843811 A CN201410843811 A CN 201410843811A CN 105784502 A CN105784502 A CN 105784502A
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- seat
- point bending
- bending test
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Abstract
The invention discloses tooling equipment for a three-point bending test. The tooling equipment comprises an upper flexural center, a lower supporting roll and a supporting seat, wherein one side, in contact with a sample, of the upper flexural center is an arc-shaped cylindrical surface, and an upper clamp seat fixing seat is arranged at each of two ends of the arc-shaped cylindrical surface. The tooling equipment also comprises an upper clamp seat and a lower clamp seat, wherein the upper clamp seat is in detachable fixed connection with the upper clamp seat fixing seat, and the lower end face of the upper clamp seat is provided with an upper mounting clamp knife edge; the lower clamp seat is supported on two supporting pin rollers, and a lower mounting clamp knife edge is arranged on the upper end surface of the lower clamp seat; a COD crack gauge capable of being arranged in a matching manner is arranged on each of the upper mounting clamp knife edge and the lower mounting clamp knife edge in a matching manner. By using the tooling equipment for the three-point bending test, the displacement value of a force application point can be accurately obtained during the three-point bending test, so that the fracture toughness JIC of a metal material can be measured at the same time, and the samples with different specifications can surely be in matching application with the mounting and measuring of the COD crack gauge.
Description
Technical field
The present invention relates to a kind of tooling device, particularly relate to a kind of tooling device being applied to mechanical test.
Background technology
Existing Metal Material Fatigue testing machine for carrying out the tooling device of three point bending test, including upper flexual center, prop up roller and bearing down；As shown in Figure 1, upper flexual center is a force roller, under prop up roller and include two supporting rollers, sample to be tested is cross section is the strip of rectangle, sample two to be tested is supported in down on two supporting rollers of a roller, it is downwardly applied to pressure, thus the bend test completing sample measures the mechanical property of metal material by the force roller of upper flexual center.But traditional three point bending test frock does not have the function of test sample point of application shift value, test Fracture of Metal Material toughness J therefore cannot be metICNeeds.
Summary of the invention
The technical problem to be solved is to provide for the tooling device of a kind of more optimal three point bending test, make sample to be tested can accurately obtain the shift value of the point of application while doing three point bending test such that it is able to measure Fracture of Metal Material toughness J simultaneouslyIC。
In order to solve above-mentioned technical problem, the technical solution used in the present invention is as follows:
A kind of three point bending test tooling device, including upper flexual center, props up roller and bearing down, and lower described roller is two supporting rollers being supported in sample two ends to be tested；The side of described upper flexual center and described sample contacts is circular arc cylinder, is provided with the fixing seat of upper blocking seat at the two ends of described circular arc cylinder；Described three point bending test tooling device also includes:
One upper blocking seat, the fixing seat of described upper blocking seat and described upper blocking seat is removably secured and is connected, the lower surface of described upper blocking seat be provided with the arm cutting edge of extending of coupling COD crackle rule on be installed the edge of a knife；
Deck once, described lower deck is arranged at the side of sample, mate setting up and down with described upper blocking seat, described lower card seat supports is arranged on described two piece supporting roller, and the upper surface of described lower deck is provided with mates the edge of a knife that is installed under the arm cutting edge of extending that COD crackle is advised；Be installed on described the edge of a knife and under the edge of a knife coupling that is installed arrange, can upper flexual center is downward in determination test shift value after Matching installation COD crackle rule between the described upper and lower clothing card edge of a knife.
The two ends of the described circular arc cylinder of flexual center can be each provided with the fixing seat of a upper blocking seat on described.
Described lower deck is the strip that cross section is square.
The three point bending test tooling device of the present invention improves upper flexual center structure in former three-point bending frock, is provided with a pair upper and lower deck for fixing COD crackle rule extensometer dexterously simultaneously.First it is connected fixing with the upper flexual center part of redesign for upper blocking seat during test, lower deck level together with sample is held on down on a roller, two arms of extending that COD crackle is advised are perpendicularly fixed at, two of lower deck are installed in the edge of a knife (as shown in Figure 5), after on-test loading, upper blocking seat is along with the pressure down of upper flexual center and displacement, lower deck is then supported in down on a roller geo-stationary, on, between two edges of a knife of lower deck, the change of relative distance is the point of application shift value of sample, acquisition is can accurately measure by COD crackle rule, the function of test sample point of application displacement can be realized hence with tooling device of the present invention.It is thus possible to by calculating the fracture toughness J measuring sample simultaneouslyIC, it is achieved the purpose of the J integration determination test of metal material.Thus it is greatly saved manpower and materials, as long as by a set of three-point bending frock, just a series of comprehensive bending property value can be obtained by single test, had both saved experimentation cost and test period, and also agreed with the industrial development theory of energy-saving and emission-reduction.
The present invention three point bending test tooling device structure ingenious and reliable, easy for installation, wherein why upper blocking seat adopts dismountable structure to be also the ingenious part of tooling device of the present invention, because sample to be tested along with test sample different size its highly have different difference, but the spacing of the edge of a knife that is installed up and down of the arm cutting edge installation of extending of coupling COD crackle rule must mate the installation adapting to COD crackle rule, so being installed up and down, the spacing dimension of the edge of a knife should be fixing, demountable structure is adopted to solve this problem just between the upper blocking seat of upper blocking seat of the present invention and upper flexual center, by change the upper blocking seat of different size thickness both can ensure that the sample of different size load onto rear upper blocking seat on be installed under the edge of a knife and lower deck to be installed between the edge of a knife spacing keeping fixing coupling COD crackle rule to install.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic diagram of three point bending test frock in prior art；
Fig. 2 a, Fig. 2 b, Fig. 2 c are the structural representations of upper flexual center in three point bending test tooling device of the present invention；
Fig. 3 a, Fig. 3 b are the structural representations of upper blocking seat of the present invention；
Fig. 4 a, Fig. 4 b are the structural representations of deck under the present invention；
Fig. 5 is the structural representation of three point bending test tooling device of the present invention.
In figure:
1. go up 2. times roller 3. samples of flexual center
101. circular arc cylinder 102. upper blocking seat fixes seat 4. upper blocking seat
401. on be installed the edge of a knife 501. times edges of a knife that are installed of 5. times decks
6.COD crackle is advised
Detailed description of the invention
Fig. 5 illustrates a kind of three point bending test tooling device, including upper flexual center 1, props up roller 2 and bearing down, and lower described roller 2 is two supporting rollers being supported in sample 3 two ends to be tested；As shown in Fig. 2 a, Fig. 2 b, Fig. 2 c, the side that described upper flexual center 1 contacts with described sample 3 is circular arc cylinder 101, the fixing seat 102 of a upper blocking seat it is each provided with at the two ends of described circular arc cylinder 101, the fixing seat 102 of each upper blocking seat be each provided with two installation screws (the two ends of described circular arc cylinder 101 be each provided with the fixing seat 102 of a upper blocking seat be in order to the balance of tooling device design and on the convenience installed and used of flexual center, be certainly in cost of manufacture etc. and consider only to be provided with the fixing seat 102 of a upper blocking seat in one end of described circular arc cylinder 101)；Described three point bending test tooling device also includes:
One upper blocking seat 4, as shown in Figure 3 a, 3 b, described upper blocking seat 4 installs bolts hole with on the fixing seat 102 of upper blocking seat two of setting and is provided with two installation bolts hole matchingly, then pass through bolt and upper blocking seat 4 is fixedly mounted on the lower section of the fixing seat 102 of upper blocking seat, the fixed structure form of other routine can certainly be passed through, be connected as long as fixing to described upper blocking seat 4 and upper blocking seat seat 102 can be removably secured, the lower surface of described upper blocking seat 4 be provided with coupling COD crackle advise 6 arm cutting edge of extending on be installed the edge of a knife 401；
Deck 5 once, as shown in Fig. 4 a, Fig. 4 b, the strip that described lower deck 5 is square for cross section, described lower deck 5 is arranged at the side of sample 3, setting is mated with described upper blocking seat about 4, described lower deck 5 supports and is arranged on described lower roller 2 (two supporting rollers), and the upper surface of described lower deck 5 is provided with under the arm cutting edge of extending of coupling COD crackle rule 6 to be installed the edge of a knife 501；Be installed on described the edge of a knife 401 and under the edge of a knife 501 coupling that is installed arrange, can upper flexual center 1 is downward in determination test shift value after Matching installation COD crackle rule 6 between the described upper and lower clothing card edge of a knife 401,501.As long as described lower deck 5 can also be other conventional shape its can be stably placed on lower described roller 2, upper surface arranges and is above installed under the edge of a knife 401 matches to be installed the edge of a knife 501.
Be installed on the arranging thickness at the edge of a knife 401 place of described upper blocking seat 4 ensures that the distance between the upper and lower clothing card edge of a knife 401,501 is just mated COD crackle rule 6 and extended the installation of arm, when sample adopts different specifications, during the height difference of sample, it is necessary for selecting the upper blocking seat 4 of different-thickness so that distance between the described upper and lower clothing card edge of a knife 401,501 remains unchanged and can mate the installation of COD crackle rule 6.
As shown in Figure 5, first corresponding upper blocking seat 4 is connected with upper flexual center 1 during test, lower deck 5 level together with sample 3 is held on down on a roller 2, COD crackle is advised between 6 two edges of a knife 401,501 being perpendicularly fixed at upper and lower deck 4,5, after on-test loading, between 4,5 two edges of a knife of upper and lower deck, the change of relative distance is the point of application shift value of sample, and advising 6 by COD crackle can accurately measure, and thus can measure Fracture of Metal Material toughness JIC。
The above; being only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; change can be readily occurred in or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with scope of the claims.
Claims (3)
1. a three point bending test tooling device, including upper flexual center, props up roller and bearing down, and lower described roller is two supporting rollers being supported in sample two ends to be tested；It is characterized in that: the side of described upper flexual center and described sample contacts is circular arc cylinder, be provided with the fixing seat of upper blocking seat at the two ends of described circular arc cylinder；Described three point bending test tooling device also includes:
One upper blocking seat, the fixing seat of described upper blocking seat and described upper blocking seat is removably secured and is connected, the lower surface of described upper blocking seat be provided with the arm cutting edge of extending of coupling COD crackle rule on be installed the edge of a knife；
Deck once, described lower deck is arranged at the side of sample, mate setting up and down with described upper blocking seat, described lower card seat supports is arranged on described two piece supporting roller, and the upper surface of described lower deck is provided with mates the edge of a knife that is installed under the arm cutting edge of extending that COD crackle is advised；Be installed on described the edge of a knife and under the edge of a knife coupling that is installed arrange, can upper flexual center is downward in determination test shift value after Matching installation COD crackle rule between the described upper and lower clothing card edge of a knife.
2. three point bending test tooling device according to claim 1, it is characterised in that: the two ends of the described circular arc cylinder of flexual center are each provided with the fixing seat of a upper blocking seat on described.
3. three point bending test tooling device according to claim 1 and 2, it is characterised in that: described lower deck is the strip that cross section is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410843811.8A CN105784502A (en) | 2014-12-25 | 2014-12-25 | Tooling equipment for three-point bending test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410843811.8A CN105784502A (en) | 2014-12-25 | 2014-12-25 | Tooling equipment for three-point bending test |
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| CN105784502A true CN105784502A (en) | 2016-07-20 |
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| CN201410843811.8A Pending CN105784502A (en) | 2014-12-25 | 2014-12-25 | Tooling equipment for three-point bending test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519286A (en) * | 2018-04-27 | 2018-09-11 | 中国信息通信研究院 | A kind of load test equipment and test method for chute |
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| JPH05322723A (en) * | 1992-05-21 | 1993-12-07 | Saginomiya Seisakusho Inc | Measuring method for value of elastoplastic fracture toughness |
| CN201535735U (en) * | 2009-09-28 | 2010-07-28 | 中国石油天然气集团公司 | Instrument for adjusting coaxiality of three-point bending testing equipment |
| CN101975701A (en) * | 2010-09-10 | 2011-02-16 | 胡少伟 | Concrete fracture test system and test method thereof |
| CN202362206U (en) * | 2011-11-25 | 2012-08-01 | 苏州热工研究院有限公司 | Three-point bending jig for precrack and fracture toughness test |
| CN103196759A (en) * | 2013-03-06 | 2013-07-10 | 中国科学院地质与地球物理研究所 | Detection apparatus and detection method of displacement of force application point used for testing rock fracture toughness |
| KR101289905B1 (en) * | 2011-12-15 | 2013-08-07 | 주식회사 포스코 | Fracture toughness test device |
| CN103728186A (en) * | 2013-12-26 | 2014-04-16 | 清华大学 | On-line observable high-temperature three-point bend test system |
| CN204330501U (en) * | 2014-12-25 | 2015-05-13 | 上海市机械制造工艺研究所有限公司 | A kind of three point bending test tooling device |
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2014
- 2014-12-25 CN CN201410843811.8A patent/CN105784502A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05322723A (en) * | 1992-05-21 | 1993-12-07 | Saginomiya Seisakusho Inc | Measuring method for value of elastoplastic fracture toughness |
| CN201535735U (en) * | 2009-09-28 | 2010-07-28 | 中国石油天然气集团公司 | Instrument for adjusting coaxiality of three-point bending testing equipment |
| CN101975701A (en) * | 2010-09-10 | 2011-02-16 | 胡少伟 | Concrete fracture test system and test method thereof |
| CN202362206U (en) * | 2011-11-25 | 2012-08-01 | 苏州热工研究院有限公司 | Three-point bending jig for precrack and fracture toughness test |
| KR101289905B1 (en) * | 2011-12-15 | 2013-08-07 | 주식회사 포스코 | Fracture toughness test device |
| CN103196759A (en) * | 2013-03-06 | 2013-07-10 | 中国科学院地质与地球物理研究所 | Detection apparatus and detection method of displacement of force application point used for testing rock fracture toughness |
| CN103728186A (en) * | 2013-12-26 | 2014-04-16 | 清华大学 | On-line observable high-temperature three-point bend test system |
| CN204330501U (en) * | 2014-12-25 | 2015-05-13 | 上海市机械制造工艺研究所有限公司 | A kind of three point bending test tooling device |
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| 国家技术监督局 批准: "《中华人民共和国国家标准 GB/T 2038-91 金属材料延性断裂韧度Jic试验方法》", 1 March 1992 * |
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| CN108519286A (en) * | 2018-04-27 | 2018-09-11 | 中国信息通信研究院 | A kind of load test equipment and test method for chute |
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Application publication date: 20160720 |