CN103527554B - A kind of nothing friction constant force with volume compensation exports air-floating apparatus - Google Patents
A kind of nothing friction constant force with volume compensation exports air-floating apparatus Download PDFInfo
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- CN103527554B CN103527554B CN201310492777.XA CN201310492777A CN103527554B CN 103527554 B CN103527554 B CN 103527554B CN 201310492777 A CN201310492777 A CN 201310492777A CN 103527554 B CN103527554 B CN 103527554B
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 10
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Abstract
The invention provides a kind of nothing friction constant force with volume compensation and export air-floating apparatus, comprise and export cylinder, compensation cylinder, gas holder; Described output cylinder comprises cylinder barrel, long-term job plug, described compensation cylinder comprises connecting rod piston, compensating cylinder, described cylinder barrel and compensating cylinder are set in gas holder, air storing cavity is formed between described gas holder and cylinder barrel, compensating cylinder, described air storing cavity is divided into separate upper air storing cavity and lower air storing cavity, and the inner chamber of described cylinder barrel, the inner chamber of compensating cylinder are communicated with lower air storing cavity; Described long-term job plug sleeve to be contained in cylinder barrel and and there is minimum gap between cylinder barrel, described connecting rod piston is sleeved in compensating cylinder; Described a kind of nothing friction constant force with volume compensation exports air-floating apparatus and also comprises ball screw, motor, laser displacement sensor, reflector; Invention increases and compensate cylinder and gas holder, by the gentle pressure-controlled of volume compensation, constant force accurate, at a high speed can be realized and export.
Description
Technical field
The present invention relates to constant force output device.
Background technique
The applied environment different according to it and application requirement, constant force exports various structures and implementation method.Dynamic constant force exports and refers to and a constant force value be carried in the target workpiece of dynamic motion.
Being hung by counterweight and target workpiece is the method for the simplest and conventional applying constant force, because counterbalance mass is constant, so the power acted in target workpiece remains unchanged, but when target workpiece does acceleration or deceleration motion, counterweight can produce an additional force acted in target workpiece because of the impact of self inertia power, and the larger impact of counterbalance mass is larger, therefore this method is only applicable to the occasion of target workpiece low speed or uniform motion.Torque motor, hydraulic cylinder etc. are also often applied to constant force and export field.If number of patent application is 201120495617.7, " constant force export hydraulic pressure installation " just discloses a kind of hydraulic pressure installation being exported accurate force value by PLC, electromagnetic proportional valve, pressure transducer, but pressure transducer is arranged on the output terminal of hydraulic pressure installation in this device, pressure transducer is kept in motion, and therefore can affect the validity of measured value.Air supporting is realizing being used widely in ultraprecise constant force output control, minute-pressure action control without friction cylinder; There is not frictional force by gas lubrication between piston and cylinder barrel, the air pressure size therefore acted in the cross-section area of the power on piston and piston and cylinder barrel is relevant; Number of patent application be 201110072339.9 " with air-bearing without friction cylinder " disclose a kind of air supporting without friction cylinder, due to its piston rod connecting admission line, can to export force value have an impact; Moreover the speed of response of gas is slow, the Volume Changes that the motion of cylinder barrel inner carrier produces can cause air pressure transition, causes the fluctuation exporting constant force, therefore, air supporting is generally used for realizing action without friction cylinder and exports, and Isobarically Control is more difficult, is difficult to ensure the constant of output force value.
Summary of the invention
For output force value in existing constant force output device be difficult to keep constant, sensor measurement not precisely, the problem such as constant force output accuracy is not high, the invention provides a kind of with volume compensation, output force value accurately, good stability export air-floating apparatus without friction constant force.
The technical solution adopted for the present invention to solve the technical problems is:
Nothing friction constant force with volume compensation exports an air-floating apparatus, comprises and exports cylinder, compensation cylinder, gas holder.Described output cylinder comprises cylinder barrel, long-term job plug, and described compensation cylinder comprises connecting rod piston, compensating cylinder.
Described cylinder barrel and compensating cylinder are set in gas holder, and form air storing cavity between described gas holder and cylinder barrel, compensating cylinder, described air storing cavity is divided into separate upper air storing cavity and lower air storing cavity, and the inner chamber of described cylinder barrel, the inner chamber of compensating cylinder are communicated with lower air storing cavity; Described long-term job plug sleeve to be contained in cylinder barrel and and there is minimum gap between cylinder barrel, described connecting rod piston is sleeved in compensating cylinder; Described a kind of nothing friction constant force with volume compensation exports air-floating apparatus and also comprises ball screw, motor, laser displacement sensor, reflector; Described ball screw is arranged on outside gas holder, described connecting rod piston is connected with ball screw by connecting base, described motor connects ball screw, and described reflector is arranged on long-term job beyond the Great Wall, and it is outer and relative with reflector position that described laser displacement sensor is fixed on gas holder.
Described gas holder is provided with the first inlet hole and the second inlet hole, and described first inlet hole communicates with the first air storing cavity, and described second inlet hole communicates with the second air storing cavity.Described first inlet hole is connected with Proportional valve respectively by tracheae with the second inlet hole.
Described long piston centre has air inlet through hole and unload vent hole, and described air inlet through hole and unloading between vent hole is isolated by sealing plug, and described air inlet through hole communicates with lower air storing cavity.
Described long-term job is uniformly distributed along the circumference the first radial throttle orifice beyond the Great Wall, and described first radial throttle orifice communicates with air inlet through hole, and described first radial throttle orifice in axial direction has two groups at least; Described cylinder barrel is uniformly distributed along the circumference the second radial throttle orifice, and described second radial throttle orifice communicates with upper air storing cavity.All orifice plug is installed in described first radial throttle orifice, the second radial throttle orifice.
Described long-term job is provided with the first pressure relief groove beyond the Great Wall, and described first pressure relief groove comprises the radial blind holes be uniformly distributed along the circumference in first groove of long-term job beyond the Great Wall on cylndrical surface, the first groove and the first axial bore communicated with radial blind holes; Described first axial bore one end is by unloading the second groove in vent hole and unloading vent hole and communicate, and the other end of described first axial bore is sealed by sprue; Described first groove has two groups at least and is positioned at the both sides of the first radial throttle orifice; Mutually isolated between described first pressure relief groove and the first radial throttle orifice.
Described cylinder barrel is provided with the second pressure relief groove, the second axial bore that described second pressure relief groove comprises the 3rd groove on cylinder barrel inner cylindrical surface, communicates with the 3rd groove, and the described second axial bore the other end communicates with the air outside gas holder; Described 3rd groove is positioned at the below of the second radial throttle orifice, mutually isolated between described second pressure relief groove and the second radial throttle orifice.
Mentality of designing of the present invention is: because piston cross-section area is certain, as long as so ensure that the gas pressure entering into inner cavity of cylinder is constant, then can ensure that the force value exported is constant.But piston moves and causes cavity volume to change, and gas compensation exists certain hysteresis quality, thus causes air pressure transition, causes Output force wave.Therefore, invention increases and compensate cylinder and gas holder, the first air storing cavity and the second air storing cavity is formed between gas holder and cylinder barrel, compensating cylinder, the air-inlet cavity exporting cylinder is communicated with by the second air storing cavity with the air-inlet cavity compensating cylinder, the displacement exporting long-term job plug in cylinder is measured by laser displacement sensor, then corresponding displacement is moved by ball screw control and compensation cylinder inside connecting rod piston, ensure that the second air storing cavity internal volume remains unchanged, avoid the pressure surge caused because of long piston movement.By the gentle pressure-controlled of volume compensation, constant force accurate, at a high speed can be realized and export.
First air storing cavity is the second radial throttle orifice air feed on cylinder barrel, ensures that cylinder barrel and long piston space form stable air film; Long-term job plug is a cylindrical body, and the one end be positioned at outside cylinder barrel is output terminal, and there is the first radial throttle orifice the one end being positioned at cylinder barrel, and the gas in cylinder barrel air-inlet cavity forms air film by the first radial throttle orifice between piston and cylinder barrel; Two place's air films are that piston provides support and lubricates, structure and plenum system is simple, bearing capacity is good.
Gas holder is provided with two inlet holes and carries out independent air feed, and passing ratio valve controls air pressure, and two air storing cavities are not influenced each other, and improves precision and the stability of constant force output.
Be equipped with pressure relief groove near radial throttle orifice, pressure relief groove communicates with extraneous normal pressure, prevents cylinder barrel inner high voltage gas from entering floating gap on the one hand and has an impact to air film, play seal action, forms atmospheric area on the other hand in gap, promotes the formation of air film.
Advantage of the present invention shows: structure is simple, precision is high, good stability.
Accompanying drawing explanation
Fig. 1 is that a kind of nothing friction constant force with volume compensation exports air-floating apparatus schematic diagram
Fig. 2 is long-term job plug schematic diagram
Fig. 3 is cylinder barrel schematic diagram
Embodiment
Composition graphs 1 ~ Fig. 3, a kind of nothing friction constant force with volume compensation exports air-floating apparatus, comprises and exports cylinder, compensation cylinder, gas holder 8.Described output cylinder comprises cylinder barrel 4, long-term job plug 2, compensates cylinder and comprises connecting rod piston 18, compensating cylinder 17.
Cylinder barrel 4 and compensating cylinder 17 are set in gas holder 8, and form air storing cavity between gas holder 8 and cylinder barrel 4, compensating cylinder 17, air storing cavity is divided into separate upper air storing cavity 7 and lower air storing cavity 9, and the inner chamber of cylinder barrel 4, the inner chamber of compensating cylinder 17 are communicated with lower air storing cavity 9; Long-term job plug 2 to be sleeved in cylinder barrel 4 and and there is minimum gap between cylinder barrel, connecting rod piston 18 is sleeved in compensating cylinder 17; A kind of nothing friction constant force with volume compensation exports air-floating apparatus and also comprises ball screw 20, motor 21, laser displacement sensor 15, reflector 16; Ball screw 20 is arranged on outside gas holder 8, connecting rod piston 18 is connected with ball screw 20 by connecting base 19, motor 21 connects ball screw 20, and reflector 16 is arranged on long-term job plug 2, and it is outer and relative with reflector 16 position that laser displacement sensor 15 is fixed on gas holder 8.
Gas holder 8 is provided with the first inlet hole 5 and the second inlet hole 10, first inlet hole 5 communicates with the first air storing cavity 7, and the second inlet hole 10 communicates with the second air storing cavity 9.First inlet hole 5 is connected with Proportional valve 6 respectively by tracheae with the second inlet hole 10.
Long-term job plug 2 center has air inlet through hole 24 and unloads vent hole 3, and air inlet through hole 24 and unloading between vent hole 3 is isolated by sealing plug 12, and air inlet through hole 24 communicates with lower air storing cavity 9.
The radial throttle orifice 11 of the first radial throttle orifice 11, first that long-term job plug 2 is uniformly distributed along the circumference communicates with air inlet through hole 24, and the first radial throttle orifice 11 in axial direction has two groups; The radial throttle orifice 14 of the second radial throttle orifice 14, second that cylinder barrel 4 is uniformly distributed along the circumference communicates with upper air storing cavity 7.All orifice plug is installed in the radial throttle orifice 14 of first radial throttle orifice 11, second.
Long-term job plug 2 is provided with the first pressure relief groove, and the first pressure relief groove comprises the radial blind holes 25 be uniformly distributed along the circumference in the first groove 23, first groove 23 on long-term job plug 2 external cylindrical surface and the first axial bore 26 communicated with radial blind holes 25; First axial bore 26 one end is by unloading the second groove 13 in vent hole 3 and unloading vent hole 3 and communicate, and the other end of the first axial bore 26 is sealed by sprue 22; First groove 23 has two groups at least and is positioned at the both sides of the first radial throttle orifice 11; Mutually isolated between first pressure relief groove and the first radial throttle orifice 11.
Cylinder barrel 4 is provided with the second pressure relief groove, and the second pressure relief groove comprises the 3rd groove 27 on cylinder barrel 4 inner cylindrical surface, second axial bore 28, second axial bore 28 the other end that communicates with the 3rd groove 27 communicates with the air outside gas holder 8; 3rd groove 27 is positioned at the below of the second radial throttle orifice 14, mutually isolated between the second pressure relief groove and the second radial throttle orifice 14.
Claims (1)
1. the nothing friction constant force with volume compensation exports an air-floating apparatus, it is characterized in that: comprise and export cylinder, compensation cylinder, gas holder; Described output cylinder comprises cylinder barrel, long-term job plug; Described compensation cylinder comprises connecting rod piston, compensating cylinder;
Described cylinder barrel and compensating cylinder are set in gas holder, and form air storing cavity between described gas holder and cylinder barrel, compensating cylinder, described air storing cavity is divided into separate upper air storing cavity and lower air storing cavity, and the inner chamber of described cylinder barrel, the inner chamber of compensating cylinder are communicated with lower air storing cavity; Described long-term job plug sleeve to be contained in cylinder barrel and and there is minimum gap between cylinder barrel, described connecting rod piston is sleeved in compensating cylinder; Described a kind of nothing friction constant force with volume compensation exports air-floating apparatus and also comprises ball screw, motor, laser displacement sensor, reflector; Described ball screw is arranged on outside gas holder, described connecting rod piston is connected with ball screw by connecting base, described motor connects ball screw, and described reflector is arranged on long-term job beyond the Great Wall, and it is outer and relative with reflector position that described laser displacement sensor is fixed on gas holder;
Described gas holder is provided with the first inlet hole and the second inlet hole, and described first inlet hole communicates with the first air storing cavity, and described second inlet hole communicates with the second air storing cavity; Described first inlet hole is connected with Proportional valve respectively by tracheae with the second inlet hole;
Described long piston centre has air inlet through hole and unload vent hole, and described air inlet through hole and unloading between vent hole is isolated by sealing plug, and described air inlet through hole communicates with lower air storing cavity;
Described long-term job is uniformly distributed along the circumference the first radial throttle orifice beyond the Great Wall, and described first radial throttle orifice communicates with air inlet through hole, and described first radial throttle orifice in axial direction has two groups at least; Described cylinder barrel is uniformly distributed along the circumference the second radial throttle orifice, and described second radial throttle orifice communicates with upper air storing cavity; All orifice plug is installed in described first radial throttle orifice, the second radial throttle orifice;
Described long-term job is provided with the first pressure relief groove beyond the Great Wall, and described first pressure relief groove comprises the radial blind holes be uniformly distributed along the circumference in first groove of long-term job beyond the Great Wall on cylndrical surface, the first groove and the first axial bore communicated with radial blind holes; Described first axial bore one end is by unloading the second groove in vent hole and unloading vent hole and communicate, and the other end of described first axial bore is sealed by sprue; Described first groove has two groups at least and is positioned at the both sides of the first radial throttle orifice; Mutually isolated between described first pressure relief groove and the first radial throttle orifice;
Described cylinder barrel is provided with the second pressure relief groove, the second axial bore that described second pressure relief groove comprises the 3rd groove on cylinder barrel inner cylindrical surface, communicates with the 3rd groove, and the described second axial bore the other end communicates with the air outside gas holder; Described 3rd groove is positioned at the below of the second radial throttle orifice, mutually isolated between described second pressure relief groove and the second radial throttle orifice.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310492777.XA CN103527554B (en) | 2013-10-18 | 2013-10-18 | A kind of nothing friction constant force with volume compensation exports air-floating apparatus |
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| CN201310492777.XA CN103527554B (en) | 2013-10-18 | 2013-10-18 | A kind of nothing friction constant force with volume compensation exports air-floating apparatus |
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| CN103527554B true CN103527554B (en) | 2015-12-23 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638623B (en) * | 2017-02-20 | 2018-07-27 | 长江勘测规划设计研究有限责任公司 | Load-compensating support device and method |
| CN107009389A (en) * | 2017-04-06 | 2017-08-04 | 沈阳埃克斯邦科技有限公司 | Integrated active constant-force compensation device |
| CN109807931B (en) * | 2017-11-21 | 2022-02-11 | 沈阳新松机器人自动化股份有限公司 | Mechanical compensation type constant force actuating mechanism |
| CN110056766B (en) * | 2019-04-19 | 2021-05-28 | 南京涵铭置智能科技有限公司 | Pressure stabilizing device for gas storage unit and pressure stabilizing method thereof |
| CN110529457A (en) * | 2019-09-26 | 2019-12-03 | 北京中航泰达环保科技股份有限公司 | A kind of Novel constant force air cylinder support |
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| CN101122547A (en) * | 2007-09-21 | 2008-02-13 | 浙江工业大学 | Follow-up type air-floating magneto-motive friction-free suspension device |
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| CN103016443A (en) * | 2012-12-31 | 2013-04-03 | 浙江工业大学 | Air suspension friction-free air cylinder provided with pressure relief groove |
| CN203627390U (en) * | 2013-10-18 | 2014-06-04 | 浙江工业大学 | Friction-free constant force output air floatation device with volume compensation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8490584B2 (en) * | 2008-09-25 | 2013-07-23 | Rez Mustafa | Air hybrid engine with dual chamber cylinder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0166223B1 (en) * | 1995-03-29 | 1998-12-01 | 서상기 | Pneumatic cylinder |
| CN101122547A (en) * | 2007-09-21 | 2008-02-13 | 浙江工业大学 | Follow-up type air-floating magneto-motive friction-free suspension device |
| CN101813130A (en) * | 2010-05-07 | 2010-08-25 | 浙江工业大学 | Air flotation device following motion trail of lifting point at overlength distance without being influenced by disturbing force of air tube |
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Effective date of registration: 20191212 Address after: 314300 room 237, building 1, new economic Industrial Park, Tongyuan Town, Haiyan County, Jiaxing City, Zhejiang Province Patentee after: Jiaxing Maojing Garden Co.,Ltd. Address before: 310018 Room 1004-1006, 17 Block 57, Baiyang Street Science Park Road, Hangzhou Economic and Technological Development Zone, Zhejiang Province Patentee before: Zhejiang Qibo Intellectual Property Operation Co.,Ltd. Effective date of registration: 20191212 Address after: 310018 Room 1004-1006, 17 Block 57, Baiyang Street Science Park Road, Hangzhou Economic and Technological Development Zone, Zhejiang Province Patentee after: Zhejiang Qibo Intellectual Property Operation Co.,Ltd. Address before: Hangzhou City, Zhejiang province 310014 City Zhaohui District Six Patentee before: Zhejiang University of Technology |
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Effective date of registration: 20201211 Address after: 274000 intersection of Changjiang Road and Fuzhou Road, Heze Development Zone, Shandong Province Patentee after: SHANDONG ZHONGKENENG ARTIFICIAL ENVIRONMENT Co.,Ltd. Address before: Room 237, building 1, new economic Industrial Park, Tongyuan Town, Haiyan County, Jiaxing City, Zhejiang Province Patentee before: Jiaxing Maojing Garden Co.,Ltd. |
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Effective date of registration: 20210319 Address after: 313011 No.87 Gongfu Road, Jiuguan Town, Nanxun District, Huzhou City, Zhejiang Province Patentee after: Huzhou Nanxun old museum Jinan Engineering Construction Co.,Ltd. Address before: 274000 intersection of Changjiang Road and Fuzhou Road, Heze Development Zone, Shandong Province Patentee before: SHANDONG ZHONGKENENG ARTIFICIAL ENVIRONMENT Co.,Ltd. |
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Denomination of invention: A frictionless constant force output air flotation device with volume compensation Effective date of registration: 20220712 Granted publication date: 20151223 Pledgee: Nanxun Zhejiang rural commercial bank Limited by Share Ltd. old branch branch Pledgor: Huzhou Nanxun old museum Jinan Engineering Construction Co.,Ltd. Registration number: Y2022330001341 |
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