CN107063538A - The clamping device of Blind Hole Method test sample residual stress - Google Patents
The clamping device of Blind Hole Method test sample residual stress Download PDFInfo
- Publication number
- CN107063538A CN107063538A CN201710167775.1A CN201710167775A CN107063538A CN 107063538 A CN107063538 A CN 107063538A CN 201710167775 A CN201710167775 A CN 201710167775A CN 107063538 A CN107063538 A CN 107063538A
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- CN
- China
- Prior art keywords
- fixture block
- top surface
- residual stress
- clamping device
- dynamic
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0047—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to residual stresses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of clamping device of Blind Hole Method test sample residual stress, including base；Testboard is fixedly installed in above the base, is fixed with the first fixture block and the second fixture block on the testboard, first fixture block is transversely arranged side by side with second fixture block；Dynamic fixture block is slideably positioned between first fixture block and second fixture block, the top surface flush of the top surface of first fixture block and the dynamic fixture block；Screw rod is offseted through second fixture block and with the dynamic fixture block, and the screw rod is threadedly coupled with second fixture block.The clamping device can solve the technical problem that drill process is unstable and punching accuracy is low caused by supporting plane of the plane rig floor without level.
Description
Technical field
The present invention relates to the clamp art of test material internal residual stress, more particularly to a kind of test examination of Blind Hole Method
The clamping device of sample residual stress.
Background technology
The a variety of techniques of component of machine and component during processing is manufactured, for example, cast, cut, weld
Connect, be heat-treated, residual stress can be all produced in the material.The presence of residual stress can reduce workpiece strength, workpiece is existed
The defective workmanship such as be deformed and ftracture during manufacture.During Spontaneous release after fabrication, the presence of residual stress can also make
The size of workpiece changes or makes the reduction of the mechanical properties such as its fatigue strength, so as to have influence on their safety in utilization.
Therefore, the state of residual stress is understood for ensuring that the safety and reliability of workpiece has very important meaning.
The method of Blind Hole Method test cylinder material residual stress is：Bored on the cylinder material sample for have residual stress
One aperture, now the residual stress that has near aperture be released, therefore the residual stress field near porose area changes, now
As long as measuring the strain variation amount of the regional area, you can calculate the residual-stress value before drill hole release on cylinder.It is logical
Cross microscope to control adjustment drilling accuracy of alignment, sample there can not be vibration, it is necessary to flat during sample is punched
Face drill floor level is placed on a plane and fixed, punching could be caused accurate, it is ensured that experimental data is effectively accurate.
At present, most of mechanical clamp can complete to clamp sample, and microscope alignment central point completes the mistake of punching
Journey.Yet with the of different sizes of various sample, shape differs, and is not ensured that during punching measurement is carried out to sample
Sample punching is stable, makes plane rig floor balance on a horizontal plane.Therefore in Blind Hole Method test cylinder material residual stress
During, it is necessary to a kind of cylinder gripper device with preferable clamping effect.
The content of the invention
Technical problem solved by the invention is to provide a kind of clamping device of Blind Hole Method test sample residual stress, the folder
The skill that drill process is unstable and punching accuracy is low caused by supporting plane of the plane rig floor without level can be solved by holding device
Art problem.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of Blind Hole Method test sample remnants should
The clamping device of power, including base；Testboard is fixedly installed in above the base, and the first folder is fixed with the testboard
Block and the second fixture block, first fixture block are transversely arranged side by side with second fixture block；Dynamic fixture block is slideably positioned in described
Between one fixture block and second fixture block, the top surface flush of the top surface of first fixture block and the dynamic fixture block；Screw rod runs through
Second fixture block and offseted with the dynamic fixture block, the screw rod is threadedly coupled with second fixture block.
As an improvement mode, in addition to support frame, support frame as described above be arranged at first fixture block with it is described dynamic
Between fixture block, support frame as described above includes the first triangular platform frame and the second triangular platform frame, the first triangular platform frame and institute
State the first fixture block to be fixedly connected, the top surface flush of the top surface of the first triangular platform frame and first fixture block, described the
Two triangular platform framves are fixedly connected with the dynamic fixture block, the top surface phase of the top surface of the second triangular platform frame and the dynamic fixture block
Concordantly.
As an improvement mode, the testboard is provided with horizontal slide rail, and the dynamic fixture block is slidably mounted on described
Slide rail.
As an improvement mode, the testboard is provided with horizontal chute, and the dynamic fixture block bottom is fixed with
Sliding block, the sliding block is placed in the chute.
As an improvement mode, the two ends of the sliding block are semicircle, and the end of the chute is provided with and the cunning
The semi-circular groove of the matching ends of block.
As an improvement mode, the left side of first fixture block is provided with boss, the top surface of the boss with it is described
The top surface flush of first fixture block.
As an improvement mode, the base be provided with anchor (bolt) hole.
As an improvement mode, the dynamic fixture block is connected with the screw flight.
Due to using above-mentioned technical proposal, the invention has the advantages that：
Between the clamping face that cylindrical specimens are sandwiched in the first fixture block and dynamic fixture block, screw rod is screwed in into right sliding block, screw top
To dynamic fixture block, dynamic fixture block holds out against cylindrical specimens on the first fixture block, makes cylindrical specimens fixation, it is ensured that cylinder is tried
Sample can be remained stationary as during drilling, greatly improve the precision of drilling, reduce the error of measurement.The clamping device can be
Plane rig floor provides a smooth horizontal support face, increase plane rig floor triangular support base and supporting plane contact area, convenient
Microscope finds punching center accurately, also enhances the stability of drill process, the device convenient disassembly, it is easy to operate, and processing is simple,
It is easily carried.
Due to also including support frame, support frame as described above is arranged between first fixture block and the dynamic fixture block, the branch
Support includes the first triangular platform frame and the second triangular platform frame, and the first triangular platform frame is fixed with first fixture block to be connected
Connect, the top surface flush of the top surface of the first triangular platform frame and first fixture block, the second triangular platform frame and institute
State fixture block to be fixedly connected, the top surface flush of the top surface of the second triangular platform frame and the dynamic fixture block can be according to cylinder
The size of body selects the triangle fixed platform frame of different sizes, to adjust the width of support platform.
Because the testboard is provided with horizontal chute, the dynamic fixture block bottom is fixed with sliding block, and the sliding block is put
In in the chute, the structure it is simple in construction, be easily installed and clean.
Because the left side of first fixture block is provided with boss, the top of the top surface of the boss and first fixture block
Face flush, sets boss to make microscopical Working rack it is determined that having sufficient position during operating point.
Because the base is provided with anchor (bolt) hole, by anchor (bolt) hole mounting foot bolt can make whole folder
Tool stablizes motionless during drilling, improves the precision of drilling.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention one；
Fig. 2 is the base of the embodiment of the present invention one and the installation diagram of testboard；
Fig. 3 is the structural representation of the dynamic fixture block of the embodiment of the present invention one；
Fig. 4 is the structural representation of the first triangular platform frame of the embodiment of the present invention one；
In figure, 1- bases, 101- chutes, 102- anchor (bolt) holes, 2- testboards, the fixture blocks of 3- first, the fixture blocks of 4- second, 5-
Dynamic fixture block, 51- sliding blocks, 6- boss, 7- screw rods, 8- triangular support bases, 91- the first triangular platform framves, 92- the second triangular platform framves.
Embodiment
Embodiment one
It is jointly shown with reference to Fig. 1 and Fig. 2, a kind of clamping device of Blind Hole Method test sample residual stress, including base 1,
Base 1 be provided with anchor (bolt) hole 102, by anchor (bolt) hole 102 mounting foot bolt can make whole fixture drilling
During stablize motionless, improve drilling precision.Further, it is also possible to take the surrounding in base 1 to apply certain pressure
Measure makes whole fixture stablize motionless.
The top surface of testboard 2 is machined with the groove of two transverse directions, groove and is respectively equipped with tapped through hole, by logical through screw thread
Testboard 2 is fixedly installed on the top of base 1, testboard 2 and is fixed with the first fixture block 3 and the second folder by the threaded fastener in hole
Block 4, the first fixture block 3 is transversely arranged side by side with the second fixture block 4.The left side of first fixture block 3 is provided with boss 6, the top surface of boss 6
With the top surface flush of the first fixture block 3.Boss 6 is set to make microscopical Working rack it is determined that having sufficient position during operating point
Put.In the present embodiment, testboard 2, the first fixture block 3, the second fixture block 4 and boss 6 are set to one.
Jointly shown with reference to Fig. 1 to Fig. 3, dynamic fixture block 5 is slideably positioned between the first fixture block 3 and the second fixture block 4, moves fixture block
5 and first fixture block 3 be respectively equipped with practise physiognomy to clamping face, the top surface flush of the top surface of the first fixture block 3 and dynamic fixture block 5.Test
Platform 2 is provided with horizontal chute 101, and the dynamic bottom of fixture block 5 is fixed with sliding block 51, and the two ends of sliding block 51 are semicircle, sliding block 51
It is placed in chute 101.The two ends of chute 101 are respectively equipped with the semi-circular groove with the matching ends of sliding block 51.Screw rod 7 runs through
Second fixture block 4 and offseted with dynamic fixture block 5, screw rod 7 is threadedly coupled with the second fixture block 4.In the present embodiment, fixture block 5 and screw rod are moved
7 threaded connections.
It is jointly shown with reference to Fig. 1 and Fig. 4, it is provided with support frame between the first fixture block 3 and dynamic fixture block 5, support frame includes the
The frame of one triangular platform frame 91 and the frame of the second triangular platform frame 92, the frame of the first triangular platform frame 91 and the first fixture block 3 are tight by screw thread
Firmware is fixedly connected, the top surface flush of the top surface of the frame of the first triangular platform frame 91 and the first fixture block 3, the second triangular platform frame 92
Frame is fixedly connected by threaded fastener with dynamic fixture block 5, and the top surface of the frame of the second triangular platform frame 92 is equal with the top surface of dynamic fixture block 5
Together.The frame of the first triangular platform frame 91 and the frame of the second triangular platform frame 92 is allowed to bear bigger pressure using the stability principle of triangle
Power.Triangular platform frame according to the different size of experiment cylinder can select the model of different size length scale, right
For diameter compares the sample of small cylinder, when not needing triangular platform frame, I am with disassembled and assembled freely, to meet experimentation
Demand.
The present invention application method be：
Cylindrical specimens to be tested are sandwiched between the first fixture block 3 and dynamic fixture block 5, screw rod 7 is screwed in into the second folder manually
Block 4, screw rod 7 promotes dynamic fixture block 5 to slide laterally, and cylinder is sandwiched between the first fixture block and dynamic fixture block, cylinder is by water
Square to pressure remain stationary as, microscope A-frame will be maintained on horizontal working face.It will be protected before test every time
The neat and tidy inside the groove of testboard 2 is held, dynamic fixture block 5 can be dismantled freely, convenient cleaned to chute 101 lubricates, and makes it
Influence of the impurity to experimentation is reduced, the accuracy of experimental data is improved.
The grip device can not only effectively clamp sample, and the supporting plane that plane rig floor can be given to provide level,
Increase plane rig floor triangular support base 8 and supporting plane contact area, facilitate microscope to find punching center accurately, also enhance and punched
The stability of journey.
Embodiment two
The present embodiment and the structure of embodiment one are essentially identical, and difference is, slide rail of the testboard 2 provided with transverse direction,
Dynamic fixture block 5 is slidably mounted on slide rail.
Claims (8)
1. a kind of clamping device of Blind Hole Method test sample residual stress, it is characterised in that including：
Base；
Testboard, the testboard is fixedly installed in above the base, and the first fixture block and the are fixed with the testboard
Two fixture blocks, first fixture block is transversely arranged side by side with second fixture block；
Dynamic fixture block, the dynamic fixture block is slideably positioned between first fixture block and second fixture block, first fixture block
The top surface flush of top surface and the dynamic fixture block；
Screw rod, the screw rod offsets through second fixture block and with the dynamic fixture block, the screw rod and second fixture block
Threaded connection.
2. the clamping device of Blind Hole Method test sample residual stress as claimed in claim 1, it is characterised in that also including support
Frame, support frame as described above is arranged between first fixture block and the dynamic fixture block, and support frame as described above includes the first triangular platform frame
With the second triangular platform frame, the first triangular platform frame is fixedly connected with first fixture block, the first triangular platform frame
Top surface and first fixture block top surface flush, the second triangular platform frame is fixedly connected with the dynamic fixture block, described
The top surface flush of the top surface of second triangular platform frame and the dynamic fixture block.
3. the clamping device of Blind Hole Method test sample residual stress as claimed in claim 1, it is characterised in that the testboard
Provided with horizontal slide rail, the dynamic fixture block is slidably mounted on the slide rail.
4. the clamping device of Blind Hole Method test sample residual stress as claimed in claim 1, it is characterised in that the testboard
Provided with horizontal chute, the dynamic fixture block bottom is fixed with sliding block, and the sliding block is placed in the chute.
5. the clamping device of Blind Hole Method test sample residual stress as claimed in claim 4, it is characterised in that the sliding block
Two ends are semicircle, and the end of the chute is provided with the semi-circular groove with the matching ends of the sliding block.
6. the clamping device of Blind Hole Method test sample residual stress as claimed in claim 4, it is characterised in that first folder
The left side of block is provided with boss, the top surface flush of the top surface of the boss and first fixture block.
7. the clamping device of Blind Hole Method test sample residual stress as claimed in claim 3, it is characterised in that the base is set
There is anchor (bolt) hole.
8. the clamping device of Blind Hole Method test sample residual stress as claimed in claim 1, it is characterised in that the dynamic fixture block
It is connected with the screw flight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710167775.1A CN107063538B (en) | 2017-03-21 | 2017-03-21 | Clamping device for testing residual stress of sample by blind hole method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710167775.1A CN107063538B (en) | 2017-03-21 | 2017-03-21 | Clamping device for testing residual stress of sample by blind hole method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107063538A true CN107063538A (en) | 2017-08-18 |
| CN107063538B CN107063538B (en) | 2023-06-23 |
Family
ID=59620602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710167775.1A Active CN107063538B (en) | 2017-03-21 | 2017-03-21 | Clamping device for testing residual stress of sample by blind hole method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107063538B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107813236A (en) * | 2017-10-31 | 2018-03-20 | 浙江工业大学 | A kind of clamping device of car light lampshade stress mornitoring |
| CN112284891A (en) * | 2020-09-04 | 2021-01-29 | 山东国晶新材料有限公司 | Clamping rod extrusion testing device and using method |
| CN114295260A (en) * | 2021-12-29 | 2022-04-08 | 福建省锅炉压力容器检验研究院 | Welding seam residual stress reliability simulation testing device |
| CN114577698A (en) * | 2022-02-24 | 2022-06-03 | 青岛理工大学 | Concrete permeability detection device and method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107813236A (en) * | 2017-10-31 | 2018-03-20 | 浙江工业大学 | A kind of clamping device of car light lampshade stress mornitoring |
| CN107813236B (en) * | 2017-10-31 | 2024-04-26 | 浙江工业大学 | Clamping device for stress detection of lamp shade of car lamp |
| CN112284891A (en) * | 2020-09-04 | 2021-01-29 | 山东国晶新材料有限公司 | Clamping rod extrusion testing device and using method |
| CN114295260A (en) * | 2021-12-29 | 2022-04-08 | 福建省锅炉压力容器检验研究院 | Welding seam residual stress reliability simulation testing device |
| CN114295260B (en) * | 2021-12-29 | 2024-03-26 | 福建省锅炉压力容器检验研究院 | Weld joint residual stress reliability simulation test device |
| CN114577698A (en) * | 2022-02-24 | 2022-06-03 | 青岛理工大学 | Concrete permeability detection device and method |
| CN114577698B (en) * | 2022-02-24 | 2023-12-12 | 青岛理工大学 | Concrete permeability detection device and method |
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| Publication number | Publication date |
|---|---|
| CN107063538B (en) | 2023-06-23 |
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