CN102410266A - Method for realizing micro-displacement - Google Patents
Method for realizing micro-displacement Download PDFInfo
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- CN102410266A CN102410266A CN2011102913519A CN201110291351A CN102410266A CN 102410266 A CN102410266 A CN 102410266A CN 2011102913519 A CN2011102913519 A CN 2011102913519A CN 201110291351 A CN201110291351 A CN 201110291351A CN 102410266 A CN102410266 A CN 102410266A
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- oil cylinder
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- microdisplacement
- displacement
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- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The invention belongs to machining methods, in particular to a method for realizing micro-displacement. The method is characterized in that: a small-radius control oil cylinder is connected with a large-radius output oil cylinder through an intercommunicating oil pipe; a piston connecting rod of the control oil cylinder is connected with a ball screw mechanism driven by a servo motor; a piston connecting rod of the output oil cylinder is connected with a mechanical part needing the micro-displacement; an oil outlet of the control oil cylinder, the intercommunicating oil pipe and an oil inlet of the output oil cylinder form a sealed cavity; and the oil outlet is connected with high-pressure clean air with adjustable pressure. Hydraulic oil with constant volume is injected into the sealed cavity in advance, the piston of the control oil cylinder is driven to make a small amount of equivalent movement through the servo motor, and the equivalent movement is reduced into the micro-displacement through reducing principles of the control oil cylinder and the output oil cylinder; therefore, the micro-displacement of the controlled mechanical part is realized. The method is simple and reasonable and convenient to use, is high in mechanical rigidity and displacement control accuracy and is suitable for various occasions needing accurate micro-displacement and high mechanical rigidity, and an actuating mechanism has a compact dimension.
Description
Technical field
The invention belongs to the mechanical means class, specifically is a kind of microdisplacement implementation method.
Background technique
In mechanical precise machining equipment, for example the precision grinding lathe often need be used the accurately microdisplacement device of control position; The basic difficult problem that the lathe microdisplacement is realized is to bear the intermediate mechanical transmission link and introduces undesirable factors such as backlass, driving error, thermal distortion; Therefore the microdisplacement device generally adopts direct drive mode, as adopts direct drive type straight-line motor, and its shortcoming is that volume is big; Poor rigidity also needs accurate low-resistance guiding device simultaneously; Physical effect through special materials such as piezoelectricity, magnetic are flexible is also arranged, and the mode through driven, field drives directly produces microdisplacement, total that its shortcoming is an amount of movement is little, also is difficult to reach millimeter level and not stretch-proof even amplify through elastic hinge; The method that adopts elastic material thin walled cavity resiliently deformable under the internal pressure effect to realize microdisplacement is also arranged in addition, and this method also exists the little limitation of total displacement amount equally.When realizing microdisplacement, Centimeter Level total displacement amount, micron order displacement accuracy are provided, have compact structure, superior mechanical rigidity and anti-extrusion tensile property aspect simultaneously, also there is not a kind of more scientific and reasonable, simple method at present.
Summary of the invention
The objective of the invention is the deficiency to existing technology, a kind of simple in structure, actuator's compact dimensions, the total displacement amount is big, mechanical rigid good, the displacement control accuracy is high microdisplacement implementation method are provided.
Technological scheme of the present invention is following:
A kind of microdisplacement implementation method; It is characterized in that: precision control oil cylinder and the big accurate output cylinder of a radius that a radius is little link together through the intercommunication oil pipe; The piston rod of control oil cylinder links to each other with the precise ball screw mechanism of driven by servomotor; The piston rod of output cylinder with need the mechanical part of microdisplacement to link together, the filler opening of control oil cylinder links to each other with the normal pressure clean air, controls the oil outlet of oil cylinder and the filler opening of intercommunication oil pipe and output cylinder and forms an airtight cavity; In airtight cavity, inject the constant hydraulic oil liquid of volume in advance; Do little equivalent through driven by servomotor control oil cylinder piston and move, be reduced into microdisplacement through the reducing principle of controlling oil cylinder and output cylinder, thereby realize by the microdisplacement of control mechanical part.
The oil outlet of output cylinder of the present invention links to each other with the high pressure clean air of adjustable in pressure, to realize constant working pressure.
The present invention is owing to adopted the control oil cylinder and the output cylinder of intercommunication; Control oil cylinder radius is little, elongated; The output cylinder radius is big, working stroke is short, and the oil outlet of control oil cylinder forms an airtight cavity with the filler opening of intercommunication oil pipe and output cylinder, as if in this airtight cavity, injecting the constant hydraulic oil liquid of volume in advance; Then since hydraulic oil liquid under steady temperature, pressure condition; Volume keeps constant characteristic, does little equivalent through driven by servomotor control oil cylinder piston and moves, and this little equivalent moves and can be reduced into microdisplacement through the reducing principle of control oil cylinder and output cylinder.Normal pressure clean air in the setting of control oil cylinder filler opening has the effect that when the control oil cylinder is reciprocating, keeps cleaning in the cylinder; The high pressure clean air that connects at the output cylinder oil outlet keeps exporting the effect that cylinder interior cleans except having; Also has unique preload effect; Through regulating pressure that high-pressure air pressure makes that gas forms at the output cylinder piston much larger than the rated load driving force; Guarantee the fluid working pressure of approximately constant; Eliminate hydraulic oil liquid volume-pressure coefficient, piston and cylinder pressure deformation coefficient to the adverse effect that the microdisplacement precision causes, guarantee to control that the little equivalent of oil cylinder piston moves is again that output cylinder produces high-precision displacement output.Advantages of simple of the present invention, actuator's compact dimensions, easy to use, mechanical rigid good, the displacement control accuracy high, is applicable to the multiple occasion that needs microdisplacement and high mechanical rigid.
Description of drawings
Fig. 1 is a schematic representation of the present invention.
Embodiment
As shown in Figure 1; A kind of microdisplacement implementation method; It is characterized in that: it is made up of a radius little precision control oil cylinder 1 and the big accurate output cylinder 2 of a radius; The oil outlet of control oil cylinder 1 and the filler opening of output cylinder 2 link together through intercommunication oil pipe 3, and the filler opening of control oil cylinder 1 is connected to normal pressure clean gas source 4, and the piston rod of control oil cylinder 1 links to each other with actuating motor 5 ball screw driven mechanisms 6; The piston rod of output cylinder 2 drives workpiece 7 with quilt and links together; The oil outlet of control oil cylinder 1 and the filler opening of intercommunication oil pipe 3 and output cylinder 2 form an airtight cavity, in airtight cavity, inject the constant hydraulic oil liquid of volume in advance, do little equivalent through actuating motor 5 drive controlling oil cylinders 1 piston and move; Reducing principle through control oil cylinder 1 and output cylinder 2 is reduced into microdisplacement, thereby realizes by the microdisplacement of control mechanical part.
The oil outlet of output cylinder 2 of the present invention connects a pre-load means 8, and pre-load means 8 inside are the high pressure clean air of adjustable in pressure.Through the hydraulic oil liquid working pressure of pre-load means 8 realization approximately constants, the amount of deformation of cylinder body, oil pipe and piston is realized the high precision micro displacement of output cylinder.
The present invention is if the diameter of output cylinder 2 is four times of control oil cylinder 1, and then under the ideal situation, actuating cylinder 1 piston whenever moves 0.02mm, and the piston of output cylinder 2 only moves the distance of 0.00125mm, thereby has realized accurate microdisplacement control effectively.Under the occasion that needs the absolute fix precision, also can be on output cylinder configuring external displacement measurement element such as grating chi, length gauge etc., realize the full cut-off ring control of output cylinder microdisplacement.
Claims (3)
1. microdisplacement implementation method; It is characterized in that: precision control oil cylinder and the big accurate output cylinder of a radius that a radius is little link together through the intercommunication oil pipe; The piston rod of control oil cylinder links to each other with the precise ball screw mechanism of driven by servomotor; The piston rod of output cylinder with need the mechanical part of microdisplacement to link together, the filler opening of control oil cylinder links to each other with the normal pressure clean air, controls the oil outlet of oil cylinder and the filler opening of intercommunication oil pipe and output cylinder and forms an airtight cavity; In airtight cavity, inject the constant hydraulic oil liquid of volume in advance; Adopt driven by servomotor control oil cylinder piston to do little equivalent and move, be reduced into microdisplacement through the reducing principle of controlling oil cylinder and output cylinder, thereby realize by the microdisplacement of control mechanical part.
2. microdisplacement implementation method according to claim 1 is characterized in that: the oil outlet of output cylinder links to each other with the high pressure clean air of adjustable in pressure.
3. microdisplacement implementation method according to claim 1 and 2 is characterized in that: configuration bit shift measurement element on output cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102913519A CN102410266A (en) | 2011-09-27 | 2011-09-27 | Method for realizing micro-displacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102913519A CN102410266A (en) | 2011-09-27 | 2011-09-27 | Method for realizing micro-displacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102410266A true CN102410266A (en) | 2012-04-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102913519A Pending CN102410266A (en) | 2011-09-27 | 2011-09-27 | Method for realizing micro-displacement |
Country Status (1)
| Country | Link |
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| CN (1) | CN102410266A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225698A (en) * | 2013-04-02 | 2013-07-31 | 中国石油天然气股份有限公司 | Equal-displacement constant-pressure control method and equal-displacement constant-pressure valve |
| CN106968993A (en) * | 2017-02-27 | 2017-07-21 | 韩佩永 | Assisted hydraulic mechanical driven system |
| CN108787912A (en) * | 2018-06-26 | 2018-11-13 | 天津市鹏宇工贸有限公司 | A kind of quick punching fixing device of ring flange forging |
| CN110131251A (en) * | 2019-01-09 | 2019-08-16 | 哈尔滨工业大学 | Electric-hydraulic combined servo loading method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58193903A (en) * | 1983-04-11 | 1983-11-11 | Mitsubishi Heavy Ind Ltd | Booster device |
| CN2747388Y (en) * | 2004-10-15 | 2005-12-21 | 苏泉窝 | Gas-liquid converting driving device |
| CN2769581Y (en) * | 2005-03-08 | 2006-04-05 | 太仓法路机械技术开发有限公司 | Gas-liquid booster cylinder |
| CN1997498A (en) * | 2004-07-08 | 2007-07-11 | 博世力士乐股份有限公司 | Driving apparatus |
| CN201003516Y (en) * | 2006-12-18 | 2008-01-09 | 宁波海天北化科技有限公司 | Motor boost system |
-
2011
- 2011-09-27 CN CN2011102913519A patent/CN102410266A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58193903A (en) * | 1983-04-11 | 1983-11-11 | Mitsubishi Heavy Ind Ltd | Booster device |
| CN1997498A (en) * | 2004-07-08 | 2007-07-11 | 博世力士乐股份有限公司 | Driving apparatus |
| CN2747388Y (en) * | 2004-10-15 | 2005-12-21 | 苏泉窝 | Gas-liquid converting driving device |
| CN2769581Y (en) * | 2005-03-08 | 2006-04-05 | 太仓法路机械技术开发有限公司 | Gas-liquid booster cylinder |
| CN201003516Y (en) * | 2006-12-18 | 2008-01-09 | 宁波海天北化科技有限公司 | Motor boost system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225698A (en) * | 2013-04-02 | 2013-07-31 | 中国石油天然气股份有限公司 | Equal-displacement constant-pressure control method and equal-displacement constant-pressure valve |
| CN103225698B (en) * | 2013-04-02 | 2015-07-08 | 中国石油天然气股份有限公司 | Equal-displacement constant-pressure control method and equal-displacement constant-pressure valve |
| CN106968993A (en) * | 2017-02-27 | 2017-07-21 | 韩佩永 | Assisted hydraulic mechanical driven system |
| CN108787912A (en) * | 2018-06-26 | 2018-11-13 | 天津市鹏宇工贸有限公司 | A kind of quick punching fixing device of ring flange forging |
| CN110131251A (en) * | 2019-01-09 | 2019-08-16 | 哈尔滨工业大学 | Electric-hydraulic combined servo loading method and device |
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Application publication date: 20120411 |