CN103604704B - A kind of compact tensile bending apparatus - Google Patents
A kind of compact tensile bending apparatus Download PDFInfo
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- CN103604704B CN103604704B CN201310645589.6A CN201310645589A CN103604704B CN 103604704 B CN103604704 B CN 103604704B CN 201310645589 A CN201310645589 A CN 201310645589A CN 103604704 B CN103604704 B CN 103604704B
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Abstract
The invention discloses a kind of compact tensile bending apparatus, be made up of bending load maintainer, specimen holder mechanism, tensile loads mechanism and bending displacement measurement mechanism, tensile loads mechanism drives first-stage worm gear worm screw by motor, bent by two-way feed screw nut adjutant again and be converted into the two ends that tensile force to be carried in piece fixture by rectilinear motion, and then tensile force is loaded on test piece; In fixture one end, tension-compression sensor is installed, for detecting the pulling force that test piece is born.By being arranged on the tangent displacement sensor below fixture, the displacement of stretching can be monitored at any time; Bending load maintainer drives worm and gear by motor, then is converted into rectilinear motion by unidirectional feed screw nut adjutant is bending, and the pedestal that drive is arranged on feed screw nut and bending pressure head realize to-and-fro movement; Bending displacement is detected by the tangent displacement sensor be arranged on pedestal; Bending pressure head is also provided with miniature tension-compression sensor, and when can detect bending, pressure head be stressed.
Description
Technical field
The present invention relates to that a kind of volume is little, the device that can be used for the single and compound mechanics performance test of material micro-nano rice stretch bending of delicate structure.By the present invention, under the observation of all kinds of Image-forming instrument, original position stretching and crooked test can be carried out to test specimen, home position observation is carried out to the microdeformation of material and damage process.This device will have good application prospect in fields such as material science, super processing, solid mechanics.
Background technology
Original position micro nanometer mechanics measuring technology is the cutting edge technology grown up in recent years, is subject to showing great attention to of national governments and research institution.Micro-nano stretching mechanics of bending measuring technology has can carry out original position stretching, bending and composite test to test specimen and the microdeformation of material and damage process be carried out to the many advantages of home position observation under the observation of all kinds of Image-forming instrument.Compared to traditional mechanics measuring technology, micro-nano stretching mechanics of bending measuring technology at present only grasp by the researchist of minority and use, main cause is that this technology needs while meeting high measuring accuracy, ensures the miniaturization of testing tool and the compatibility with in-situ monitoring equipment.Current micro-nano mechanics of bending test mainly concentrates in transmission electron microscope (TEM) and scanning electron microscope (SEM) to be carried out, both there is very limited working cavity, and need the Electro Magnetic Compatibility and the vacuum compatibility that ensure proving installation and working cavity, these reasons limit the fast development of micro-nano stretching mechanics of bending measuring technology just.All in all, it is still challenging work that the micro-nano stretching of research high precision, large test specification, low cost bends compound mechanics proving installation, is also a urgent job simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of compact tensile bending apparatus, volume of the present invention be little, delicate structure, be that one can be used for the single and compound mechanics performance test of material micro-nano rice stretch bending.Electro Magnetic Compatibility and the vacuum compatibility of proving installation and Electronic Speculum working cavity can be realized by the present invention, promote the development of original position micro-nano stretching mechanics of bending measuring technology.
The present invention is by bending load maintainer, specimen holder mechanism, tensile loads mechanism and bending displacement measurement mechanism composition, described bending load maintainer is by the first motor, first motor flange, first shaft coupling, first worm screw, first worm gear, unidirectional screw pair, first leading screw supporting seat, 4th bearing, first pull pressure sensor, bending pressure head composition, the first motor is driven to be fixedly mounted on pedestal by the first motor flange, motor output shaft is connected by the first shaft coupling with the first worm screw, first worm screw and the first worm gear form primary speed-down and commutation, first worm gear is arranged on unidirectional screw pair, then be arranged on pedestal by the first leading screw supporting seat, the convert rotational motion of unidirectional feed screw nut adjutant first worm gear is unidirectional rectilinear motion, the 4th bearing of mounted thereto is driven to do linear reciprocating motion, below 4th bearing, the second guide rail slide block is installed, and be connected with pedestal by supporting seat, first pull pressure sensor and bending pressure head are installed above the 4th bearing, by linear reciprocating motion, realize the bending loading and unloading to test specimen,
Described tensile loads mechanism is made up of the second motor, the second motor flange, the second shaft coupling, the second worm screw, the second worm gear, two-way screw pair, the second screw mandrel supporting seat, the second motor is driven to be arranged on the second motor flange, second motor flange screw is arranged on pedestal, and motor output shaft is connected by the second shaft coupling with the second worm shaft.Second worm screw is screwed mounting base by the second bearing spider, and forms primary speed-down and commutation with the second worm gear.Second worm gear is arranged on two-way screw pair, two-way screw pair is arranged on pedestal by the second screw mandrel supporting seat, the convert rotational motion of two-way feed screw nut adjutant second worm gear is synchronous bidirectional rectilinear motion, and then drive the three abutments that is arranged on above pair of nut and the 5th bearing to realize synchronous bidirectional rectilinear motion, three abutments and the 5th bearing are arranged on two the first guide rail slide blocks below, first fixture and the second fixture are fixedly mounted on three abutments and the 5th bearing respectively, along with doing synchronous bidirectional rectilinear motion, thus tensile force is applied to test specimen, and can ensure that test specimen center is motionless,
Described specimen holder mechanism is made up of the first fixture and the second fixture, the second pull pressure sensor, first fixture screw is arranged on three abutments, for compressing test specimen, second fixture is connected with the second pull pressure sensor, then be arranged on the 5th bearing, below first fixture and the second fixture, second displacement sensor and second baffle are installed, in the process implementing tensile loads, measure the stressed size of test specimen by the second pull pressure sensor, measured the displacement of test specimen stretching by second displacement sensor;
Bending displacement measurement mechanism is the first displacement transducer, the measurement of bending displacement is by the first displacement sensor on mounting base, the free terminal of first displacement transducer contacts with the first baffle plate be arranged on the 4th bearing, when the first baffle plate along with the 4th bearing reciprocating time, free terminal also moves reciprocatingly accordingly, just can measure the bending displacement loaded; The bending force value loaded is measured by the first pull pressure sensor be arranged on the 4th bearing.
The course of work of the present invention and principle are:
Described tensile loads mechanism is arranged on pedestal, by first-stage worm gear worm speed-down and the commutation of two-way screw pair, by tensile loads on a test piece; Specimen holder mechanism comprises the first fixture and the second fixture, and the first fixture and the second fixture are arranged on above three abutments and the 5th bearing respectively; Bending load maintainer is arranged on impact faces, by first-stage worm gear worm speed-down and the commutation of unidirectional screw pair, convert rotational motion is rectilinear motion by unidirectional screw pair (), drive the 4th bearing to carry out rectilinear motion, then drive the first pull pressure sensor and bending pressure head to carry out bending loading and move.
Beneficial effect of the present invention:
1, little, the compact conformation of volume, tensile loads power, bending loading force and to load stroke large, move more stable, can be placed in scanning electron microscope cavity, carry out stretch bending measurement, have good compatibility with Electronic Speculum under realizing home state to test specimen.
2, under the observation of all kinds of Image-forming instrument, original position stretching can be carried out to test specimen and bend single and compound mechanics test, home position observation is carried out to the microdeformation of material and damage process, and can load/displacement signal be gathered, thus disclose the mechanical characteristic of material under micro-nano-scale and micromechanism of damage, promote the development of the technology such as new material new process, material science, super processing, solid mechanics.
Accompanying drawing explanation
Fig. 1 is front view of the present invention.
Fig. 2 is vertical view of the present invention.
Fig. 3 is right view of the present invention.
Fig. 4 is rear view of the present invention.
In figure: 1. the first motor, 2. pedestal, 3. the first motor flange, 4. the first shaft coupling, 5. bearing first bearing, 6. the first worm screw, 7. the first worm gear, 8. screw pair, 9. the first bearing, 10. the first displacement transducer, 11. first baffle plates, 12. second motors, 13. second motor flanges, 14. second shaft couplings, 15. second bearing spiders, 16. second worm screws, 17. second worm gears, 18. two-way screw pairs, 19. second screw mandrel supporting seats, 20. bearings-2, 21. first guide rail slide blocks, 22. three abutments, 23. second displacement sensors, 24. first fixtures, 25. first leading screw supporting seats, 26. the 4th bearings, 27. first pull pressure sensor, 28. bending pressure heads, 29. second fixtures, 30. second pull pressure sensor, 31. the 5th bearings, 32. second baffles, 33. second guide rail slide blocks, 34. supporting seats.
Embodiment
Refer to Fig. 1, Fig. 2, shown in Fig. 3 and Fig. 4, the present invention is by bending load maintainer, specimen holder mechanism, tensile loads mechanism and bending displacement measurement mechanism composition, described bending load maintainer is by the first motor 1, first motor flange 3, first shaft coupling 4, first worm screw 6, first worm gear 7, unidirectional screw pair 8, first leading screw supporting seat 25, 4th bearing 26, first pull pressure sensor 27, bending pressure head 28 forms, the first motor 1 is driven to fixedly mount on the base 2 by the first motor flange 3, motor output shaft is connected by the first shaft coupling 4 with the first worm screw 6, first worm screw 6 and the first worm gear 7 form primary speed-down and commutation, first worm gear 7 is arranged on unidirectional screw pair 8, then install on the base 2 by the first leading screw supporting seat 25, the convert rotational motion of the first worm gear 7 is unidirectional rectilinear motion by unidirectional screw pair 8, the 4th bearing 26 of mounted thereto is driven to do linear reciprocating motion, 4th bearing 26 is provided with the second guide rail slide block 33 below, and be connected with pedestal 2 by supporting seat 34,4th bearing 26 is provided with the first pull pressure sensor 27 and bending pressure head 28 above, by linear reciprocating motion, realize the bending loading and unloading to test specimen,
Described tensile loads mechanism is made up of the second motor 12, second motor flange 13, second shaft coupling 14, second worm screw 16, second worm gear 17, two-way screw pair 18, second screw mandrel supporting seat 19, the second motor 12 is driven to be arranged on the second motor flange 13, second motor flange 13 screw is installed on the base 2, and motor output shaft is connected by the second shaft coupling 14 with the second worm shaft 16; Second worm screw 16 is screwed mounting base 2 by the second bearing spider 15, and forms primary speed-down and commutation with the second worm gear 17.Second worm gear 17 is arranged on two-way screw pair 18, two-way screw pair 18 is installed on the base 2 by the second screw mandrel supporting seat 19, the convert rotational motion of the second worm gear 17 is synchronous bidirectional rectilinear motion by two-way screw pair 18, and then drive the three abutments 22 that is arranged on above pair of nut and the 5th bearing 31 to realize synchronous bidirectional rectilinear motion, three abutments 22 and the 5th bearing 31 are arranged on two the first guide rail slide blocks 21 below, first fixture 24 and the second fixture 29 are fixedly mounted on three abutments 22 and the 5th bearing 31 respectively, along with doing synchronous bidirectional rectilinear motion, thus tensile force is applied to test specimen, and can ensure that test specimen center is motionless.
Described specimen holder mechanism is by the first fixture 24 and the second fixture 29, second pull pressure sensor 30 forms, first fixture 24 screw is arranged on three abutments 22, for compressing test specimen, second fixture 29 is connected with the second pull pressure sensor 30, then be arranged on the 5th bearing 31, below first fixture 24 and the second fixture 29, second displacement sensor 23 and second baffle 32 are installed, in the process implementing tensile loads, the stressed size of test specimen is measured by the second pull pressure sensor 30, the displacement of test specimen stretching is measured by second displacement sensor 23.
Bending displacement measurement mechanism is the first displacement transducer 10, the measurement of bending displacement is measured by the first displacement transducer 10 on mounting base 2, the free terminal of first displacement transducer 10 contacts with the first baffle plate 11 be arranged on the 4th bearing 26, when the first baffle plate 11 along with the 4th bearing 26 reciprocating time, free terminal also moves reciprocatingly accordingly, just can measure the bending displacement loaded; The bending force value loaded is measured by the first pull pressure sensor 27 be arranged on the 4th bearing 26.
The course of work and the principle of the present embodiment are:
Described tensile loads mechanism is arranged on pedestal 21, is commutated, by tensile loads on a test piece by first-stage worm gear worm speed-down and two-way screw pair 18; Specimen holder mechanism comprises the first fixture 24 and the second fixture 29, first fixture 24 and the second fixture 29 and is arranged on above three abutments 22 and the 5th bearing 31 respectively; Bending load maintainer is arranged on above pedestal 2, commutated by first-stage worm gear worm speed-down and unidirectional screw pair 8, convert rotational motion is rectilinear motion by unidirectional screw pair (8), drive the 4th bearing 26 to carry out rectilinear motion, then drive the first pull pressure sensor 27 and bending pressure head 28 to carry out bending loading and move.
Claims (1)
1. a compact tensile bending apparatus, it is characterized in that: be by bending load maintainer, specimen holder mechanism, tensile loads mechanism and bending displacement measurement mechanism composition, described bending load maintainer is by the first motor (1), first motor flange (3), first shaft coupling (4), first worm screw (6), first worm gear (7), unidirectional screw pair (8), first leading screw supporting seat (25), 4th bearing (26), first pull pressure sensor (27), bending pressure head (28) composition, the first motor (1) is driven to be fixedly mounted on pedestal (2) by the first motor flange (3), motor output shaft is connected by the first shaft coupling (4) with the first worm screw (6), first worm screw (6) and the first worm gear (7) form primary speed-down and commutation, first worm gear (7) is arranged on unidirectional screw pair (8), then be arranged on pedestal (2) by the first leading screw supporting seat (25), the convert rotational motion of the first worm gear (7) is unidirectional rectilinear motion by unidirectional screw pair (8), the 4th bearing (26) of mounted thereto is driven to do linear reciprocating motion, 4th bearing (26) is provided with the second guide rail slide block (33) below, and be connected with pedestal (2) by supporting seat (34), 4th bearing (26) is provided with the first pull pressure sensor (27) and bending pressure head (28) above, pass through linear reciprocating motion, realize the bending loading and unloading to test specimen,
Described tensile loads mechanism is made up of the second motor (12), the second motor flange (13), the second shaft coupling (14), the second worm screw (16), the second worm gear (17), two-way screw pair (18), the second screw mandrel supporting seat (19), the second motor (12) is driven to be arranged on the second motor flange (13), second motor flange (13) screw is arranged on pedestal (2), and motor output shaft is connected by the second shaft coupling (14) with the second worm screw (16), second worm screw (16) is screwed mounting base (2) by the second bearing spider (15), and forms primary speed-down and commutation with the second worm gear (17), second worm gear (17) is arranged on two-way screw pair (18), two-way screw pair (18) is arranged on pedestal (2) by the second screw mandrel supporting seat (19), the convert rotational motion of the second worm gear (17) is synchronous bidirectional rectilinear motion by two-way screw pair (18), and then drive the three abutments (22) that is arranged on above pair of nut and the 5th bearing (31) to realize synchronous bidirectional rectilinear motion, three abutments (22) and the 5th bearing (31) are arranged on two the first guide rail slide blocks (21) below, first fixture (24) and the second fixture (29) are fixedly mounted on three abutments (22) and the 5th bearing (31) respectively, along with doing synchronous bidirectional rectilinear motion, thus tensile force is applied to test specimen, and can ensure that test specimen center is motionless,
Described specimen holder mechanism is by the first fixture (24) and the second fixture (29), second pull pressure sensor (30) forms, first fixture (24) screw is arranged on three abutments (22), for compressing test specimen, second fixture (29) is connected with the second pull pressure sensor (30), then be arranged on the 5th bearing (31), below first fixture (24) and the second fixture (29), second displacement sensor (23) and second baffle (32) are installed, in the process implementing tensile loads, the stressed size of test specimen is measured by the second pull pressure sensor (30), the displacement of test specimen stretching is measured by second displacement sensor (23),
Bending displacement measurement mechanism is the first displacement transducer (10), the measurement of bending displacement is measured by the first displacement transducer (10) on mounting base (2), first displacement transducer (10) free terminal contacts with the first baffle plate (11) be arranged on the 4th bearing (26), when the first baffle plate (11) along with the 4th bearing (26) reciprocating time, free terminal also moves reciprocatingly accordingly, just can measure the bending displacement loaded; The bending force value loaded is measured by the first pull pressure sensor (27) be arranged on the 4th bearing (26).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310645589.6A CN103604704B (en) | 2013-12-05 | 2013-12-05 | A kind of compact tensile bending apparatus |
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| CN201310645589.6A CN103604704B (en) | 2013-12-05 | 2013-12-05 | A kind of compact tensile bending apparatus |
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| CN103604704B true CN103604704B (en) | 2015-11-04 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048876A (en) * | 2014-06-24 | 2014-09-17 | 上海应用技术学院 | Multi-channel stress and strain data acquisition system and multi-channel stress and strain data method for unidirectional micro stretcher |
| CN104237266B (en) * | 2014-09-24 | 2016-06-22 | 东南大学 | A kind of bending-torsion coupling original position charger based on x-ray tomography |
| CN105300797A (en) * | 2015-09-18 | 2016-02-03 | 辽宁科技大学 | Micro-forming stretcher |
| CN108225937B (en) * | 2018-01-30 | 2023-09-22 | 北方工业大学 | Bending test method and device for high-strength steel sheet |
| CN110031290B (en) * | 2019-03-21 | 2021-11-02 | 东南大学 | Three-point bending-based reciprocating loading test piece clamp and test method |
| CN113063672B (en) * | 2021-03-18 | 2022-05-31 | 南京林业大学 | Automatic testing arrangement of rattan tensile properties |
| CN113624600B (en) * | 2021-07-21 | 2024-04-26 | 西安工程大学 | Three-dimensional solid device of functional microfilament |
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| CN102359912A (en) * | 2011-10-11 | 2012-02-22 | 吉林大学 | Mechanical testing platform for in-situ tension/compression materials under scanning electronic microscope based on quasi-static loading |
| CN102384875A (en) * | 2011-11-09 | 2012-03-21 | 吉林大学 | Stretching, compression and bending combined load mode material mechanics performance test device under microscope |
| CN102494955A (en) * | 2011-11-10 | 2012-06-13 | 吉林大学 | Cross-scale in-situ micro-nanometer three-point/four-point bending test device under microscopic assembly |
| CN103308404A (en) * | 2013-06-14 | 2013-09-18 | 吉林大学 | In-situ nano-indentation tester based on adjustable stretching-bending preload |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101036291B1 (en) * | 2008-12-31 | 2011-05-23 | 이용성 | fatigue tester |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102359912A (en) * | 2011-10-11 | 2012-02-22 | 吉林大学 | Mechanical testing platform for in-situ tension/compression materials under scanning electronic microscope based on quasi-static loading |
| CN102384875A (en) * | 2011-11-09 | 2012-03-21 | 吉林大学 | Stretching, compression and bending combined load mode material mechanics performance test device under microscope |
| CN102494955A (en) * | 2011-11-10 | 2012-06-13 | 吉林大学 | Cross-scale in-situ micro-nanometer three-point/four-point bending test device under microscopic assembly |
| CN103308404A (en) * | 2013-06-14 | 2013-09-18 | 吉林大学 | In-situ nano-indentation tester based on adjustable stretching-bending preload |
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Granted publication date: 20151104 Termination date: 20161205 |