CN104454774B - The low frictional behavior cylinder of piezoelectric pile activation rod seal circle radial vibration - Google Patents
The low frictional behavior cylinder of piezoelectric pile activation rod seal circle radial vibration Download PDFInfo
- Publication number
- CN104454774B CN104454774B CN201410611275.9A CN201410611275A CN104454774B CN 104454774 B CN104454774 B CN 104454774B CN 201410611275 A CN201410611275 A CN 201410611275A CN 104454774 B CN104454774 B CN 104454774B
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- China
- Prior art keywords
- cylinder
- cylinder barrel
- piezoelectric pile
- annulus
- piston
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
Abstract
The low frictional behavior cylinder of piezoelectric pile activation rod seal circle radial vibration, the present invention relates to the technical field of pneumatic control. The present invention is that noise is big, the life-span is short, manufacture difficulty is big, volume is big, oil contamination, problem little, that reliability is low of exerting oneself in order to overcome existing friction-reducing structure to exist. The left side central portion of its cylinder barrel is thin-walled caliber, and the left end of thin-walled caliber is that flange plate-like annulus annulus inner headed face place closed set has O RunddichtringO; On the left side inner headed face of high rigid sleeve, even circumferential is provided with n plane, and n is even number; The right-hand member piston slipper seal of piston-rod assembly is arranged in cylinder barrel internal cavities, piston rod on the left of piston-rod assembly reaches outer end on the left of cylinder barrel after sliding through O RunddichtringO, high rigid sleeve gap is enclosed within the thin-walled caliber on the left of cylinder barrel and outside flange plate-like annulus. The present invention can reduce more than 70 percent of frictional force between piston rod and cylinder body under supersonic vibration resonant condition, and friction reducing effect is good.
Description
Technical field
The present invention relates to the technical field of pneumatic control.
Background technology
The piston of cylinder is when tick-over, and the discontinuous fluid phenomenon often stopped and gone, namely cylinder is creeped. Stick-slip Motion in Pneumatic Cylinder has a strong impact on air-driven precision. For eliminating this phenomenon, common method be in control signal superposition tremor (Dither) signal to compensate the frictional force of cylinder. But the introducing of vibrating signal greatly reduces the life-span controlling valve, and brings unnecessary noise and shake, therefore applies limited.
Another kind of method is to utilize air supporting principle to introduce one layer of air film between cylinder friction pair, thus significantly reducing the kinematics and static friction power of cylinder, makes Stick-slip Motion in Pneumatic Cylinder be greatly improved. Such as patent CN102155465A. But this air supporting low rubbing cylinder is in the fabrication process, the machining accuracy of each parts is proposed significantly high requirement, and there is great difficulty in large-sized floating cylinder processing and manufacturing.
Still an alternative is that in the occasion that low speed performance requirements is higher, be often used during gas-liquid combination-controlled servosystem. By increasing the damping of system, the very big improvement of having creeped of cylinder low speed. But this system often volume is relatively big, and is easily introduced oil contamination.
Still an alternative is that and utilize the principle that supersonic vibration reduces friction to paste piezoelectric patches on cylinder, utilize the supersonic vibration of its output to reduce frictional force. Such as patent CN103195770A, CN103195772A. But this SMD cylinder exists piezoelectric patches exerts oneself less, with the cylinder barrel dissatisfactory problem of connected mode reliability.
Summary of the invention
It is an object of the invention to provide the low frictional behavior cylinder of a kind of piezoelectric pile activation rod seal circle radial vibration, the present invention is that noise is big, the life-span is short, manufacture difficulty is big, volume is big, oil contamination, problem little, that reliability is low of exerting oneself in order to overcome existing friction-reducing structure to exist. The low frictional behavior cylinder of a kind of piezoelectric pile activation rod seal circle radial vibration of the present invention, it is made up of cylinder barrel, high rigid sleeve, piston-rod assembly, multiple piezoelectric pile, O RunddichtringO.
Cylinder barrel right-hand member closed set has plug, cylinder barrel right-hand member to have the breather port connected with cylinder barrel internal cavities, and cylinder barrel left side central portion has the breather port connected with cylinder barrel internal cavities; The left side central portion of cylinder barrel is thin-walled caliber, and the left end of thin-walled caliber is flange plate-like annulus, and on the periphery of annulus, even circumferential is provided with n plane, and annulus inner headed face place closed set has O RunddichtringO; On the left side inner headed face of high rigid sleeve, even circumferential is provided with n plane, and n is even number; The right-hand member piston slipper seal of piston-rod assembly is arranged in cylinder barrel internal cavities, piston rod on the left of piston-rod assembly reaches outer end on the left of cylinder barrel after sliding through O RunddichtringO, high rigid sleeve gap is enclosed within the thin-walled caliber on the left of cylinder barrel and outside flange plate-like annulus, and make the right side of high rigid sleeve be connected with step end face on the left of cylinder barrel, n plane on annulus periphery is parallel relative respectively with n plane on inner headed face on the left of high rigid sleeve, and between apical grafting have a piezoelectric pile; The rule that drives of multiple piezoelectric pile is export about every pair of piezoelectric pile homophase that cylinder-bore axis is symmetrical, makes annulus and thin-walled caliber produce cylinder and radially bends vibration.
The present invention can reduce more than 70 percent of frictional force between piston rod and cylinder body under supersonic vibration resonant condition, and friction reducing effect is good. The present invention is by the control acting on piston rod packing circle radial vibration, making cylinder piston rod seal place produce cylinder and radially bend the low rubbing cylinder designed based on ultrasonic antifriction principle of mode of oscillation. Its compact conformation, it may be achieved high frequency cylinder radially bends vibration, has features such as exerting oneself relatively greatly, efficiency is high, the suitability is strong, has a wide range of applications in low speed cylinder field.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention,
Fig. 2 is the structural representation of cylinder barrel 1 and O RunddichtringO 5 in Fig. 1,
Fig. 3 is the left view structural representation of high rigid sleeve 2 in Fig. 1,
Fig. 4 is the left view structure for amplifying schematic diagram of cylinder barrel 1 in Fig. 2.
Detailed description of the invention
Detailed description of the invention one: present embodiment is described in conjunction with Fig. 1, Fig. 2, Fig. 3, present embodiment is made up of cylinder barrel 1, high rigid sleeve 2, piston-rod assembly 3, multiple piezoelectric pile 4, O RunddichtringO 5;
Cylinder barrel 1 right-hand member closed set has plug 1-5, cylinder barrel 1 right-hand member to have and the cylinder barrel 1 internal cavities 1-8 breather port 1-7 connected, and cylinder barrel 1 left side central portion has and the cylinder barrel 1 internal cavities 1-8 breather port 1-6 connected; The left side central portion of cylinder barrel 1 is thin-walled caliber 1-1, and the left end of thin-walled caliber 1-1 is flange plate-like annulus 1-2, and on the periphery of annulus 1-2, even circumferential is provided with n plane 1-3, and annulus 1-2 inner headed face place closed set has O RunddichtringO 5; On the left side inner headed face of high rigid sleeve 2, even circumferential is provided with n plane 2-1, n is even number; The right-hand member piston slipper seal of piston-rod assembly 3 is arranged in cylinder barrel 1 internal cavities 1-8, piston rod on the left of piston-rod assembly 3 reaches outer end on the left of cylinder barrel 1 after sliding through O RunddichtringO 5, high rigid sleeve 2 gap is enclosed within outside the thin-walled caliber 1-1 on the left of cylinder barrel 1 and flange plate-like annulus 1-2, and make the right side of high rigid sleeve 2 be connected with step end face 1-4 on the left of cylinder barrel 1, n plane 1-3 on annulus 1-2 periphery is parallel relative respectively with n plane 2-1 on inner headed face on the left of high rigid sleeve 2, and between apical grafting have a piezoelectric pile 4;The rule that drives of multiple piezoelectric pile 4 is export about every pair of piezoelectric pile 4 homophase that cylinder-bore axis is symmetrical, makes annulus 1-2 and thin-walled caliber 1-1 produce cylinder and radially bends vibration.
Described each piezoelectric pile 4 is THORLABS Products (PA3BCW1.5 �� 1.5 �� 1mm).
The drive waveforms of described each piezoelectric pile 4 is sinusoidal or triangular wave.
The driving frequency of described each piezoelectric pile 4 is supersonic band, specifically the resonant frequency of whole device, for 150kHz ~ 170kHz.
Operation principle: all piezoelectric pile 4 are operationally, O RunddichtringO 5 radially dither is promoted by annulus 1-2, O RunddichtringO 5 is made to be in dither state with corresponding friction pair, utilize the antifriction effect of dither, the difference of the kinematics and static friction coefficient between minimizing friction pair, and then the switching of kinematics and static friction power when weakening its low cruise, the purpose of the characteristic such as frictional force during to reach to improve cylinder low cruise, thus reducing the creeping phenomenon of cylinder.
Detailed description of the invention two: illustrate that present embodiment, the present embodiment difference from detailed description of the invention one are in that the wall thickness of the thin-walled caliber 1-1 of the left side central portion of cylinder barrel 1 is for less than or equal to 0.5mm in conjunction with Fig. 1, Fig. 2, Fig. 3. Other composition is identical with detailed description of the invention one with connected mode.
Detailed description of the invention three: present embodiment is described in conjunction with Fig. 1, Fig. 2, Fig. 3, the quantity of the plane 1-3 that the present embodiment difference from detailed description of the invention one is in that on the periphery of annulus 1-2 is four, and the quantity of the plane 2-1 on the left side inner headed face of high rigid sleeve 2 is four. Other composition is identical with detailed description of the invention one with connected mode.
Detailed description of the invention four: present embodiment is described in conjunction with Fig. 4, present embodiment has groove 1-9 between each two plane 1-3 on the periphery of annulus 1-2 on the basis of detailed description of the invention one, the opening direction of groove 1-9 is the radial direction of annulus 1-2, and inwardly open; The width of groove 1-9 is less than 200 microns. Other composition is identical with detailed description of the invention one with connected mode.
Present embodiment is in that to reduce rigidity during vibration, increases Oscillation Amplitude, thus reducing Pneumatic Cylinder with Friction further, increases the effective power output of cylinder.
Claims (7)
1. the low frictional behavior cylinder of piezoelectric pile activation rod seal circle radial vibration, it is made up of cylinder barrel (1), high rigid sleeve (2), piston-rod assembly (3), multiple piezoelectric pile (4), O RunddichtringO (5);
Cylinder barrel (1) right-hand member closed set has plug (1-5), cylinder barrel (1) right-hand member has the breather port (1-7) connected with cylinder barrel (1) internal cavities (1-8), and the left side of cylinder barrel (1) sidewall has the breather port (1-6) connected with cylinder barrel (1) internal cavities (1-8), it is characterized in that the left side central portion of cylinder barrel (1) is thin-walled caliber (1-1), the left end of thin-walled caliber (1-1) is flange plate-like annulus (1-2), on the periphery of annulus (1-2), even circumferential is provided with n plane (1-3), and annulus (1-2) inner headed face place closed set has O RunddichtringO (5), on the left side inner headed face of high rigid sleeve (2), even circumferential is provided with n plane (2-1), and n is even number, the right-hand member piston slipper seal of piston-rod assembly (3) is arranged in cylinder barrel (1) internal cavities (1-8), the piston rod in piston-rod assembly (3) left side reaches outer end, cylinder barrel (1) left side after sliding through O RunddichtringO (5), high rigid sleeve (2) gap is enclosed within thin-walled caliber (1-1) and flange plate-like annulus (1-2) outside in cylinder barrel (1) left side, and make the right side of high rigid sleeve (2) be connected with cylinder barrel (1) left side step end face (1-4), n plane (1-3) on annulus (1-2) periphery is parallel relative respectively with n the plane (2-1) on the inner headed face of high rigid sleeve (2) left side, and between apical grafting have a piezoelectric pile (4),The rule that drives of multiple piezoelectric pile (4) is export about every pair of piezoelectric pile (4) homophase that cylinder-bore axis is symmetrical, makes annulus (1-2) and thin-walled caliber (1-1) produce cylinder and radially bend vibration.
2. the low frictional behavior cylinder of piezoelectric pile activation rod seal circle radial vibration according to claim 1, it is characterised in that described each piezoelectric pile (4) is THORLABS Products-PA3BCW1.5 �� 1.5 �� 1mm.
3. the low frictional behavior cylinder of piezoelectric pile activation rod seal circle radial vibration according to claim 1, it is characterised in that the drive waveforms of described each piezoelectric pile (4) is sinusoidal or triangular wave.
4. the low frictional behavior cylinder of piezoelectric pile activation rod seal circle radial vibration according to claim 1, it is characterized in that the driving frequency of described each piezoelectric pile (4) is supersonic band, the specifically resonant frequency of whole device, for 150kHz ~ 170kHz.
5. the low frictional behavior cylinder of piezoelectric pile activation rod seal circle radial vibration according to claim 1, it is characterised in that the wall thickness of the thin-walled caliber (1-1) of the left side central portion of cylinder barrel (1) is less than or equal to 0.5mm.
6. the low frictional behavior cylinder of piezoelectric pile activation rod seal circle radial vibration according to claim 1, it is characterized in that the quantity of the plane (1-3) on the periphery of annulus (1-2) is four, the quantity of the plane (2-1) on the left side inner headed face of high rigid sleeve (2) is four.
7. the low frictional behavior cylinder of piezoelectric pile activation rod seal circle radial vibration according to claim 1, it is characterized in that having groove (1-9) between each two plane (1-3) on the periphery of annulus (1-2), the radial direction that opening direction is annulus (1-2) of groove (1-9), and inwardly open; The width of groove (1-9) is less than 200 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410611275.9A CN104454774B (en) | 2014-11-04 | 2014-11-04 | The low frictional behavior cylinder of piezoelectric pile activation rod seal circle radial vibration |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410611275.9A CN104454774B (en) | 2014-11-04 | 2014-11-04 | The low frictional behavior cylinder of piezoelectric pile activation rod seal circle radial vibration |
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| Publication Number | Publication Date |
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| CN104454774A CN104454774A (en) | 2015-03-25 |
| CN104454774B true CN104454774B (en) | 2016-06-08 |
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| CN201410611275.9A Expired - Fee Related CN104454774B (en) | 2014-11-04 | 2014-11-04 | The low frictional behavior cylinder of piezoelectric pile activation rod seal circle radial vibration |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578367B (en) * | 2018-11-27 | 2020-05-01 | 江苏大学 | Low-friction cylinder with pre-tightening piezoelectric stack-induced multi-mode sleeve vibration |
| CN109578368B (en) * | 2018-11-27 | 2020-03-31 | 江苏大学 | Pre-tightening type low-friction cylinder for high-frequency torsional vibration of piston rod sleeve caused by piezoelectric stack |
| CN109356902B (en) * | 2018-11-29 | 2020-05-19 | 南京工程学院 | Piston rod assembly for servo cylinder |
| CN109538570A (en) * | 2018-12-10 | 2019-03-29 | 江苏大学 | A kind of low rubbing cylinder of prefastening piezoelectric pile densification seal vibration |
| CN109578372A (en) * | 2018-12-10 | 2019-04-05 | 江苏大学 | A kind of low rubbing cylinder of piezoelectric pile densification seal high-frequency vibration |
| CN111022425A (en) * | 2019-12-26 | 2020-04-17 | 长春工业大学 | Decoupling type double-acting locking cylinder with ultrasonic nut |
| CN111059097B (en) * | 2019-12-26 | 2021-09-14 | 长春工业大学 | Annular magnetic coupling type linear locking cylinder based on ultrasonic antifriction effect |
| CN111022424A (en) * | 2019-12-26 | 2020-04-17 | 长春工业大学 | Ultrasonic antifriction type single-action positioning cylinder adopting motion decoupling mechanism |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04265671A (en) * | 1991-02-16 | 1992-09-21 | Murakami Kaimeidou:Kk | Ultrasonic linear sliding mechanism |
| US5574326A (en) * | 1993-05-07 | 1996-11-12 | Canon Kabushiki Kaisha | Vibration actuator |
| JPH09317713A (en) * | 1996-05-24 | 1997-12-09 | Mitsubishi Heavy Ind Ltd | Hydraulic cylinder device |
| CN101262186A (en) * | 2008-04-29 | 2008-09-10 | 哈尔滨工业大学 | Vertical bending layer energy converter cylinder stator and ultrasonic electromotor using this stator |
| CN101304223A (en) * | 2008-07-07 | 2008-11-12 | 哈尔滨工业大学 | Longitudinal-shaking sandwich energy converter type cylinder type birotor ultrasonic motor |
| CN103174702A (en) * | 2013-04-17 | 2013-06-26 | 哈尔滨工业大学 | Cylinder with low friction characteristic by piezoelectricity induced piston vibration |
-
2014
- 2014-11-04 CN CN201410611275.9A patent/CN104454774B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04265671A (en) * | 1991-02-16 | 1992-09-21 | Murakami Kaimeidou:Kk | Ultrasonic linear sliding mechanism |
| US5574326A (en) * | 1993-05-07 | 1996-11-12 | Canon Kabushiki Kaisha | Vibration actuator |
| JPH09317713A (en) * | 1996-05-24 | 1997-12-09 | Mitsubishi Heavy Ind Ltd | Hydraulic cylinder device |
| CN101262186A (en) * | 2008-04-29 | 2008-09-10 | 哈尔滨工业大学 | Vertical bending layer energy converter cylinder stator and ultrasonic electromotor using this stator |
| CN101304223A (en) * | 2008-07-07 | 2008-11-12 | 哈尔滨工业大学 | Longitudinal-shaking sandwich energy converter type cylinder type birotor ultrasonic motor |
| CN103174702A (en) * | 2013-04-17 | 2013-06-26 | 哈尔滨工业大学 | Cylinder with low friction characteristic by piezoelectricity induced piston vibration |
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| CN104454774A (en) | 2015-03-25 |
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Granted publication date: 20160608 Termination date: 20211104 |