CN105174202B - Utilize pitch difference to realize micromicron level continually varying Mechanical controllable and split knot device - Google Patents
Utilize pitch difference to realize micromicron level continually varying Mechanical controllable and split knot device Download PDFInfo
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- CN105174202B CN105174202B CN201510422338.0A CN201510422338A CN105174202B CN 105174202 B CN105174202 B CN 105174202B CN 201510422338 A CN201510422338 A CN 201510422338A CN 105174202 B CN105174202 B CN 105174202B
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- screw rod
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- push rod
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Abstract
The invention discloses and a kind of utilize pitch difference to realize interelectrode distance continually varying Mechanical controllable in the precision of micromicron level to split knot device and method.The invention belongs to a kind of novel Mechanical controllable and split knot (MCBJ) device, can operate with molecular electronic field and sensor field, small pitch difference between the different pitch of coaxial screw rod is utilized to act on nanometer splitting device chip, may be implemented in the interelectrode distance of micromicron class precision upper-pilot two, thus realize constructing of unimolecule knot, and then realizing the research to unimolecule junction characteristic, the development for single molecules apparatus provides valuable reference.
Description
Technical field
The present invention relates to a kind of construct the machinery that unimolecule is tied by nano dot electrode, be specifically related to molectronics, micro-nano
The fields such as electronics.
Background technology
Mechanical controllable splits knot device and is widely used in molecular switch, molecule town with its superior stability and accurate controlling
Stream device, the research of molecule field effect transistor equimolecular electronic device and manufacture.Prior art is to utilize the piezoelectric effect can be in nanometer
Control base plate deformation amount on yardstick, but precision is the most not enough, and there is the low temperature piezoelectric hypodynamic problem of driving.
Additionally, there are and a kind of utilize gear drive and realize Mechanical controllable and split the device of knot, but utilize device that this principle manufactures by
In there is inevitable backlash so that point electrode is to not reaching preferable requirement in terms of consecutive variations.
In order to solve the problem of the aspect such as low temperature, continuous, high accuracy, the present invention proposes and utilizes step motor drive, knot
Close screw pitch difference to invent and manufactured one and the most high-precision can realize continually varying Mechanical controllable and split knot device.
Summary of the invention
The problem that present invention aim to address the aspect such as low temperature of the prior art, continuous, high accuracy, it is provided that a kind of novel
Mechanical controllable splits knot device, utilizes the pitch difference between coaxial screw rod difference pitch, manufactures a kind of high accuracy, continually varying machine
Tool is controlled splits knot device.
The technical solution used in the present invention is:
One utilizes pitch difference to realize micromicron level continually varying Mechanical controllable to split knot device, it is characterised in that include overhead guard,
Column, line slideway, push rod, top nut, screw rod, floating version, lateral shelf plate, lower nut, lower kickboard, shaft coupling, electricity
Support, motor, base and pole；Described overhead guard, the column of both sides and base are fixedly connected into hollow frame structure, make
For the skeleton of whole machinery, act primarily as the effect supporting whole machinery；Described line slideway has two, solid respectively
Being scheduled on the inner side of column, described lateral shelf plate is movably arranged on line slideway respectively, for ensureing the lateral shelf plate promotion at screw rod
Under can move up and down along line slideway；Described lower kickboard is fixed on the lower end of two lateral shelf plates, and lower kickboard centre is fixed
Nut forms lead screw pair with the lower end threaded engagement of screw rod；The two ends of described upper kickboard are fixed on the slide block on the line slideway of both sides
On, the top nut fixing by centre is arranged at the threaded upper ends of screw rod and forms another lead screw pair；Under described screw rod
End is connected with the motor being arranged in motor cabinet by shaft coupling, and motor cabinet is arranged on base, and the upper end of screw rod is provided with one
Individual push rod；The upper end of two lateral shelf plates is separately installed with a pole, is used between lower end and the upper end of push rod of two poles
Place nanometer splitting device chip.
When motor works, shaft coupling rotates with motor together with screw rod, and screw rod threaded upper ends promotes upper kickboard
Moving with push rod, screw rod lower end screw thread promotes lower kickboard and lateral shelf plate to move.
Described upper kickboard is fixed together with push rod, moves together under the promotion of screw rod threaded upper ends；Described lower kickboard and
Lateral shelf plate is fixed together, and moves together under the promotion of screw rod lower end screw thread；Between described upper kickboard and lower kickboard the most admittedly
Fixed, move at different rates under the promotion of screw rod threaded upper ends and lower end screw thread respectively.
When described screw rod rotates forward, threaded upper ends rotates 1 week with screw rod, and in promotion, kickboard and push rod move up 0.95mm,
Lower end screw thread rotates 1 week with screw rod, promotes lower kickboard and lateral shelf plate to move up 1mm；During screw rod reversion, threaded upper ends
Rotating 1 week with screw rod, in promotion, kickboard and push rod move down 0.95mm, and lower end screw thread rotates 1 week with screw rod, promote
Lower kickboard and lateral shelf plate move down 1mm.
Described nanometer splitting device chip comprises a unsettled nanometer Golden Bridge, and the narrowest middle part cross-sectional area of Golden Bridge is 40
Nm × 40nm, the bending of chip eventually makes Golden Bridge rupture, and forms two separate acicular nanometer electrodes；By curved
Bent or unfold chip and can increase or reduce two interelectrode distances；Described chip, decay factor r=Δ Z/ Δ X,
Δ Z is the variable quantity of chip center's displacement in z-direction, and Δ X is the variable quantity of two interelectrode distances, decay factor r energy
Enough reach 1 × 10-6, and the displacement accuracy that chip center is in vertical Z-direction can reach nanoscale.The present invention carries simultaneously
Split knot device for a kind of described Mechanical controllable and construct the method that unimolecule is tied by nano-electrode, the method concrete steps
As follows:
Nanometer splitting device chip is attached to the lower end of two ends pole, and push rod just supports the centre position of chip, and chip is by two
End pole and push rod 3 are clamped, and start motor work, and motor drives shaft coupling to rotate together with screw rod, at spiral shell
Under the promotion of bar threaded upper ends, upper kickboard moves together with push rod, under the promotion of screw rod lower end screw thread, and lower kickboard and side frame
Plate moves together；When the bottom surface of ejector pin contact nanometer splitting device chip, nanometer splitting device chip start by push rod and
Extruding force between the pole of two ends, nanometer splitting device chip produces small Bending Deformation under the effect of extruding force, and then
Make nanometer splitting device chip fracture；By controlling rotating and reverse of motor, when screw rod rotates forward, threaded upper ends is with spiral shell
Bar rotates 1 week, and in promotion, kickboard and push rod move up 0.95mm, and lower end screw thread rotates 1 week with screw rod, and promotion is floated downward
Plate and lateral shelf plate move up 1mm；During screw rod reversion, threaded upper ends rotates 1 week with screw rod, kickboard and push rod in promotion
Moving down 0.95mm, lower end screw thread rotates 1 week with screw rod, promotes lower kickboard and lateral shelf plate to move down 1mm, utilizes
The pitch difference of two ends screw thread can realize micromicron level and accurately control the spacing of nanometer splitting device chip fracture, forms unimolecule
Knot.
Advantage of the present invention and beneficial effect:
(1) present invention is to utilize step motor drive, and driving force is influenced by temperature little, overcomes low temperature piezoelectric and drives
Dynamic not enough problem.
(2) Mechanical controllable that the present invention utilizes pitch difference to realize micromicron level splits knot, owing to screw thread is continuous print, overcomes profit
Can not continually varying problem by gear nesting.
Accompanying drawing explanation
Fig. 1 splits knot (MCBJ) installation drawing for realizing micromicron level continually varying Mechanical controllable.
Reference: 1, overhead guard, 2, column, 3, line slideway, 4, push rod, 5, top nut, 6, screw rod, 7,
Upper kickboard, 8, lateral shelf plate, 9, lower nut, 10, lower kickboard, 11, shaft coupling, 12, motor cabinet, 13, motor, 14,
Base, 15, pole.
In order to be able to be more clearly understood from the technical characteristic of the present invention, purpose and effect, the now tool of the comparison accompanying drawing explanation present invention
Body embodiment.
Detailed description of the invention
Embodiment 1
As it is shown in figure 1, utilize pitch difference to realize micromicron level continually varying Mechanical controllable split knot device, this device includes overhead guard
1, column 2, line slideway 3, push rod 4, top nut 5, screw rod 6, floating version 7, lateral shelf plate 8, lower nut 9, under
Kickboard 10, shaft coupling 11, motor cabinet 12, motor 13, base 14 and pole 15；Described overhead guard, the column of both sides and
Base is fixedly connected into hollow frame structure, as the skeleton of whole machinery, acts primarily as and supports whole machinery
Effect；Described line slideway has two, is separately fixed at the inner side of column, and described lateral shelf plate is movably arranged on straight line respectively and leads
On rail, for ensureing that lateral shelf plate can move up and down along line slideway under the promotion of screw rod；Described lower kickboard is fixed on two
The lower end of individual lateral shelf plate, lower nut fixing in the middle of lower kickboard forms lead screw pair with the lower end threaded engagement of screw rod；Described floating
The two ends of plate are fixed on the slide block on the line slideway of both sides, are arranged on the threaded upper ends of screw rod by the top nut that centre is fixing
Place also forms another lead screw pair；The lower end of described screw rod is connected with the motor being arranged in motor cabinet by shaft coupling, motor
Seat is arranged on base, and the upper end of screw rod is provided with a push rod；The upper end of two lateral shelf plates is separately installed with a pole,
It is used between lower end and the upper end of push rod of two poles placing nanometer splitting device chip.
Described upper kickboard is fixed together with push rod, moves together under the promotion of screw rod threaded upper ends；Described lower kickboard and
Lateral shelf plate is fixed together, and moves together under the promotion of screw rod lower end screw thread；Between described upper kickboard and lower kickboard the most admittedly
Fixed, move at different rates under the promotion of screw rod threaded upper ends and lower end screw thread respectively.
Shaft coupling (11) (MCKL10-2-4), line slideway (3) (SSE2BS8-130), stepping electricity is purchased according to Fig. 1
Machine (13) (Faulhaber direct current generator), assembling device, and direct current generator (13) is connected with computer.
Device is transferred to original state, i.e. goes up kickboard (7) and lower kickboard (10) is in extreme lower position, by receiving of making
Rice splitting device chip gripper between push rod (4) and pole (15), with computer control direct current generator (13) make motor with
Constant speed rotates, it can be observed that phase between the overall and upper kickboard (7) that lower kickboard (10) and lateral shelf plate (8) are constituted
Changing position, nanometer splitting device chip bends deformation, and deformation quantity gradually becomes along with the rising of upper and lower kickboard
Greatly, until the nano-electrode on chip breaks to form nano-electrode pair, now by control motor (13) rotating forward and
Reversion, it is possible to accurately, consecutive variations ground regulation and control nano-electrode pair spacing.
The explanation that the present invention is correlated with:
1. all features disclosed in the present invention, method or during step, in addition to mutually exclusive feature or step,
Combine by any way.
2. any feature disclosed in the present invention, unless specifically stated otherwise, all can be by other equivalences or the replacement spy with similar purpose
Levy and replaced.It is to say, unless stated otherwise, each feature is one in a series of equivalence or similar characteristics
Example.
3., in the present invention, in order to ensure to realize the high accuracy regulation and control of micromicron level, the material of machinery uses the stainless of high rigidity
Steel material, it would however also be possible to employ other high hardness materials.
Claims (4)
1. one kind utilizes pitch difference to realize micromicron level continually varying Mechanical controllable to split knot device, it is characterised in that include top
Cover, column, line slideway, push rod, top nut, screw rod, floating version, lateral shelf plate, lower nut, lower kickboard, shaft coupling,
Motor cabinet, motor, base and pole；Described overhead guard, the column of both sides and base are fixedly connected into hollow frame structure,
As the skeleton of whole machinery, act primarily as the effect supporting whole machinery；Described line slideway has two, respectively
Being fixed on the inner side of column, described lateral shelf plate is movably arranged on line slideway respectively, for ensureing lateral shelf plate pushing away at screw rod
Can move up and down along line slideway under Dong；Described lower kickboard is fixed in the middle of the lower end of two lateral shelf plates, lower kickboard fixing
The lower end threaded engagement of lower nut and screw rod form lead screw pair；The two ends of described upper kickboard are fixed on the line slideway of both sides
On slide block, the top nut fixing by centre is arranged at the threaded upper ends of screw rod and forms another lead screw pair；Described screw rod
Lower end is connected with the motor being arranged in motor cabinet by shaft coupling, motor cabinet is arranged on base, the upper end installation of screw rod
There is a push rod；The upper end of two lateral shelf plates is separately installed with a pole, between lower end and the upper end of push rod of two poles
For placing nanometer splitting device chip；When motor works, shaft coupling rotates with motor together with screw rod, spiral shell
Bar threaded upper ends promotes upper kickboard and push rod to move, and screw rod lower end screw thread promotes lower kickboard and lateral shelf plate to move.
The most according to claim 1 utilize pitch difference to realize micromicron level continually varying Mechanical controllable to split knot device, its
Being characterised by, described upper kickboard is fixed together with push rod, moves together under the promotion of screw rod threaded upper ends；Described float downward
Plate and lateral shelf plate are fixed together, and move together under the promotion of screw rod lower end screw thread；Do not have between described upper kickboard and lower kickboard
Have fixing, move at different rates under the promotion of screw rod threaded upper ends and lower end screw thread respectively.
The most according to claim 1 utilizing pitch difference to realize micromicron level continually varying Mechanical controllable to split knot device, it is special
Levying and be, when described screw rod rotates forward, threaded upper ends rotates 1 week with screw rod, and in promotion, kickboard and push rod move up 0.95mm,
Lower end screw thread rotates 1 week with screw rod, promotes lower kickboard and lateral shelf plate to move up 1mm；During screw rod reversion, threaded upper ends
Rotating 1 week with screw rod, in promotion, kickboard and push rod move down 0.95mm, and lower end screw thread rotates 1 week with screw rod, promote
Lower kickboard and lateral shelf plate move down 1mm；
Described nanometer splitting device chip comprises a unsettled nanometer Golden Bridge, and the narrowest middle part cross-sectional area of Golden Bridge is 40
Nm × 40nm, the bending of chip eventually makes Golden Bridge rupture, and forms two separate acicular nanometer electrodes；By bending
Or unfold chip and can increase or reduce two interelectrode distances；Described chip, decay factor r=Δ Z/ Δ X, Δ Z
Being the variable quantity of chip center's displacement in z-direction, Δ X is the variable quantity of two interelectrode distances, and decay factor r can
Reach 1 × 10-6, and the displacement accuracy that chip center is in vertical Z-direction can reach nanoscale.
4. use the Mechanical controllable described in claim 1 to split knot device and construct the method that unimolecule is tied by nano-electrode,
It is characterized in that the method specifically comprises the following steps that
Nanometer splitting device chip is attached to the lower end of two ends pole, and push rod just supports the centre position of chip, and chip is by two
End pole and push rod 3 are clamped, and start motor work, and motor drives shaft coupling to rotate together with screw rod, at spiral shell
Under the promotion of bar threaded upper ends, upper kickboard moves together with push rod, under the promotion of screw rod lower end screw thread, and lower kickboard and side frame
Plate moves together；When the bottom surface of ejector pin contact nanometer splitting device chip, nanometer splitting device chip start by push rod and
Extruding force between the pole of two ends, nanometer splitting device chip produces small Bending Deformation under the effect of extruding force, and then
Make nanometer splitting device chip fracture；By controlling rotating and reverse of motor, when screw rod rotates forward, threaded upper ends is with spiral shell
Bar rotates 1 week, and in promotion, kickboard and push rod move up 0.95mm, and lower end screw thread rotates 1 week with screw rod, and promotion is floated downward
Plate and lateral shelf plate move up 1mm；During screw rod reversion, threaded upper ends rotates 1 week with screw rod, kickboard and push rod in promotion
Moving down 0.95mm, lower end screw thread rotates 1 week with screw rod, promotes lower kickboard and lateral shelf plate to move down 1mm, utilizes
The pitch difference of two ends screw thread can realize micromicron level and accurately control the spacing of nanometer splitting device chip fracture, forms unimolecule
Knot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510422338.0A CN105174202B (en) | 2015-07-17 | 2015-07-17 | Utilize pitch difference to realize micromicron level continually varying Mechanical controllable and split knot device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510422338.0A CN105174202B (en) | 2015-07-17 | 2015-07-17 | Utilize pitch difference to realize micromicron level continually varying Mechanical controllable and split knot device |
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| CN105174202A CN105174202A (en) | 2015-12-23 |
| CN105174202B true CN105174202B (en) | 2016-09-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105458525A (en) * | 2016-01-08 | 2016-04-06 | 温州市牟迪贸易有限公司 | Processing device being provided with movable processing head and being able to prevent overtravel |
| CN105537762A (en) * | 2016-01-08 | 2016-05-04 | 李保平 | Novel machining device with movable machining head |
| CN105458576A (en) * | 2016-01-08 | 2016-04-06 | 俞升洋 | Processing device provided with movable processing head and rollers |
| CN105397311A (en) * | 2016-01-08 | 2016-03-16 | 杭州弗娜眼镜有限公司 | Machining device control system with movable machining head |
| CN105479018A (en) * | 2016-01-08 | 2016-04-13 | 义乌市披克亚进出口有限公司 | Processing device with movable processing head and rolling shaft |
| CN105479017A (en) * | 2016-01-08 | 2016-04-13 | 义乌市披克亚进出口有限公司 | Processing device with movable processing head and power supplied by solar energy |
| CN105414755A (en) * | 2016-01-08 | 2016-03-23 | 厦门市博罗格贸易有限公司 | Machining device which is provided with movable machining head and can lower noise |
| CN106908481A (en) * | 2017-03-03 | 2017-06-30 | 厦门大学 | A kind of stepper motor splits knot device with Mechanical controllable associated with piezoelectric ceramics |
| CN107179343B (en) * | 2017-06-19 | 2019-07-23 | 厦门大学 | A kind of Graphene electrodes chip splitting knot technology for Mechanical controllable |
| CN107300575A (en) * | 2017-06-29 | 2017-10-27 | 厦门大学 | The precision control method of nano-electrode centering electrode spacing |
| CN107315032A (en) * | 2017-07-06 | 2017-11-03 | 厦门大学 | A kind of Mechanical controllable with highly attenuating coefficient splits knot device |
| CN115980131B (en) * | 2022-10-25 | 2023-08-01 | 南开大学 | Flexible material-based planar mechanical controllable cracking method |
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| CN2519270Y (en) * | 2002-01-31 | 2002-10-30 | 重庆大学 | Lens of high precision scanning tunnel microscope |
| JP4223903B2 (en) * | 2003-09-09 | 2009-02-12 | 株式会社リコー | Screwdriver tool |
| JP4129872B2 (en) * | 2003-12-01 | 2008-08-06 | 関東自動車工業株式会社 | Spot welder |
| JP4933084B2 (en) * | 2005-11-15 | 2012-05-16 | 株式会社放電精密加工研究所 | Press machine |
| CN203076730U (en) * | 2013-01-28 | 2013-07-24 | 台州市路桥精阳数控机械有限公司 | Automatic variable screw pitch tapping device |
| CN103264492B (en) * | 2013-06-04 | 2015-08-19 | 浙江大学 | The injection device of the miniature injection machine of differential gearing and method |
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Granted publication date: 20160914 Termination date: 20170717 |