CN203685720U - Long-distance zero-friction constant force output air flotation device - Google Patents
Long-distance zero-friction constant force output air flotation device Download PDFInfo
- Publication number
- CN203685720U CN203685720U CN201320646731.4U CN201320646731U CN203685720U CN 203685720 U CN203685720 U CN 203685720U CN 201320646731 U CN201320646731 U CN 201320646731U CN 203685720 U CN203685720 U CN 203685720U
- Authority
- CN
- China
- Prior art keywords
- cylinder barrel
- radially
- long
- throttle orifice
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005188 flotation Methods 0.000 title abstract 3
- 238000003860 storage Methods 0.000 claims abstract description 20
- 238000006073 displacement reaction Methods 0.000 claims abstract description 10
- 230000007774 longterm Effects 0.000 claims description 30
- 238000003825 pressing Methods 0.000 claims description 19
- 238000002955 isolation Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Landscapes
- Actuator (AREA)
Abstract
The utility model provides a long-distance zero-friction constant force output air flotation device, comprising an output air cylinder and a following system, wherein the output air cylinder comprises a long piston, a cylinder tube, an air storage sleeve and an air pressure press plate, and the following system comprises a sliding block, a straight-line guide rail, a motor, a ball screw, a laser sensor and the like; the output air cylinder is connected with the following system through a mounting support; the long piston is sleeved by the cylinder tube, the air storage sleeve sleeves the cylinder tube, the two ends of the air storage sleeve and the cylinder tube are sealed through an end cover and a base, the end cover and the base are respectively fixed on the two ends of the mounting support, the upper surface of the mounting support is sleeved on the straight-line guide rail through the sliding block, the two ends of the straight-line guide rail are supported by a bracket, the motor is arranged on the bracket and is connected with the ball screw, the ball screw is connected with the mounting support through a nut seat, the laser displacement sensor is arranged at the mounting support. The long-distance zero-friction constant force output air flotation device disclosed by the utility model outputs a constant force by utilizing the output air cylinder, and controls the output air cylinder to realize the long-distance motion by utilizing the following system; the structure is simple, the stability is good, and the precision is high.
Description
Technical field
The utility model relates to constant force output unit.
Background technique
According to its different applied environments and application requirements, constant force output has various structures and implementation method.Dynamically constant force output refers to a constant power value is carried in the target workpiece of dynamic motion.
The simplest and conventional method that applies constant force by counterweight and target workpiece hanging, because counterbalance mass is constant, so it is constant to act on force retaining in target workpiece, but in the time that target workpiece is done acceleration or deceleration motion, counterweight can produce an additional force acting 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 output field.As " hydraulic pressure installation of constant force output " that number of patent application is 201120495617.7 just announced a kind of hydraulic pressure installation of exporting accurate power value by PLC controller, electromagnetic proportional valve, pressure transducer, but in this device, pressure transducer is arranged on the output terminal of hydraulic pressure installation, pressure transducer is kept in motion, and therefore can affect the validity of measured value.Air supporting without friction cylinder realizing that ultraprecise constant force output is controlled, be used widely in minute-pressure action control; Between piston and cylinder barrel, there is not frictional force by gas lubrication, therefore act on air pressure size in cross-section area and the cylinder barrel of power on piston and piston relevant; But 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 of output constant force, therefore, air supporting is generally used for realizing action output without friction cylinder, and constant voltage control ratio is more difficult, is difficult to guarantee the constant of ouput force value; Moreover air gap between piston and piston wall requires as micron order, requirement on machining accuracy is very high, is subject to the restriction of processing conditions and machining accuracy, and the piston of ultralong-stroke is difficult to realize.
Summary of the invention
For ouput force value in existing constant force output unit be difficult to keep constant, sensor measurement not precisely, constant force output accuracy is not high, it is long apart from problems such as constant force outputs to realize, the utility model provides long distance a kind of good stability, that constant force output accuracy is high without friction constant force output air-floating apparatus.
The utility model solves the technological scheme that its technical problem adopts:
A kind of long distance, without friction constant force output air-floating apparatus, comprises output cylinder and system for tracking; Described output cylinder comprises long-term job plug, cylinder barrel, gas storage jacket, air pressure pressing plate, and described system for tracking comprises slide block, linear rail, motor, ball screw, laser sensor and reflector; Described output cylinder connects system for tracking by mounting bracket.
Described long-term job plug sleeve be contained in cylinder barrel and and cylinder barrel between there is minimum gap, described gas storage jacket is sleeved on outside cylinder barrel, the two ends of described gas storage jacket and cylinder barrel are by end cap and base seal, described long-term job plug is through end cap, described mounting bracket two ends are fixed end lid and bottom seat respectively, described mounting bracket upper surface is contained on linear rail by slide block set, seat supports is passed through at described linear rail two ends, described motor is arranged on bearing and connects ball screw, described ball screw is by nut seat connection support, described laser displacement sensor is arranged on the side of mounting bracket, described reflector is sleeved on the top of long-term job plug, described laser displacement sensor is relative with reflector position.
Between described gas storage jacket and cylinder barrel, form the first separate air storing cavity and the second air storing cavity.
Described air pressure pressing plate be sleeved in cylinder barrel and and cylinder barrel wall between gapped, installing force sensor under described air pressure pressing plate, described power sensor is fixed on base, on described base, has air outlet.
Described long-term job plug center has air inlet through hole and unloads vent hole, described air inlet through hole and unload between vent hole and isolate by sealing plug, and described air inlet through hole is positioned at one end of cylinder barrel at long-term job plug.
Described long-term job first throttle orifice radially that is uniformly distributed along the circumference beyond the Great Wall, described first radially throttle orifice communicate with air inlet through hole, described first radially throttle orifice in axial direction have two groups at least; Described cylinder barrel is near one end of end cap second throttle orifice radially that is uniformly distributed along the circumference, described second radially throttle orifice communicate with the second air storing cavity; The 3rd throttle orifice radially that is uniformly distributed along the circumference on described air pressure pressing plate, the described the 3rd radially throttle orifice communicate with inner cavity of cylinder.
Described first radially throttle orifice, second radially throttle orifice and the 3rd radially in throttle orifice, orifice plug is all installed.
Described long-term job is provided with the first pressure relief groove beyond the Great Wall, and described the first pressure relief groove comprises the radial blind holes being uniformly distributed along the circumference in the first groove on external cylindrical surface, the first groove and the first axial bore communicating with radial blind holes; Described first axial bore one end communicates with unloading vent hole by the second groove unloading in vent hole, and the other end of described the first axial bore seals by sprue; The first groove on described external cylindrical surface has two groups and be positioned at first both sides of throttle orifice radially at least; Radially isolation mutually between throttle orifice of described the first pressure relief groove and first.
Described cylinder barrel is provided with the second pressure relief groove, described the second pressure relief groove comprise the 3rd groove on cylinder barrel inner cylindrical surface, with the second axial bore that the 3rd groove communicates, the described second axial bore the other end communicates with the through hole on end cap; Described the 3rd groove is positioned at second below of throttle orifice radially, radially isolation mutually between throttle orifice of described the second pressure relief groove and second.
Described cylinder barrel is near one end of air pressure pressing plate suction port that is uniformly distributed along the circumference, and described gas storage jacket is provided with the first inlet hole and the second inlet hole, and described the first inlet hole communicates with the first air storing cavity, and described the second inlet hole communicates with the second air storing cavity.Described the first inlet hole is connected with Proportional valve by tracheae respectively with the second inlet hole.
Mentality of designing of the present utility model is: in order to realize the constant force output of long distance, the utility model utilization output cylinder is exported constant force, utilizes system for tracking control output cylinder to realize long distance motion.
Between long-term job plug and cylinder barrel, by gas lubrication, do not have frictional force impact, and long-term job plug cross-section area is certain, therefore, as long as the gas atmosphere that guarantees to pass in cylinder barrel keeps constant, it is constant that the power value that long-term job is exported beyond the Great Wall keeps.Output cylinder connects system for tracking by mounting bracket, system for tracking can be with moveable cylinder servo-actuated by mounting bracket, laser displacement sensor is installed on mounting bracket, laser displacement sensor can be measured the displacement of cylinder barrel, then information is fed back to system for tracking, control the cylinder barrel corresponding distance of moving, make long-term job plug all the time in the effective travel of cylinder barrel, thereby realize the constant force output of long distance
Outside cylinder barrel, increase a gas storage jacket, between gas storage jacket and cylinder barrel, form two air storing cavities, the first air storing cavity communicates with cylinder barrel air-inlet cavity, be equivalent to increase the volume of cylinder barrel air-inlet cavity, the kinetic volume-variation of long-term job plug is less on the impact of air pressure sudden change, on the other hand, utilizes system for tracking control cylinder barrel servo-actuated, reduce to cause because of long piston movement the sudden change of cylinder barrel cavity volume, further improved the precision of constant force output.
The second air storing cavity is radially throttle orifice air feed of second on cylinder barrel, guarantees that cylinder barrel and long piston space form stable air film; The independent air feed of two each and every one air storing cavity passing ratio valves, does not influence each other, and has improved precision and the stability of constant force output.
Installing force sensor and air pressure pressing plate on cylinder barrel base, air pressure pressing plate is provided with the 3rd throttle orifice radially, by piston cavity self gas air feed, between air pressure pressing plate and cylinder barrel, form gas lubrication, there is not frictional force, equate with the power acting on air pressure pressing plate because act on the power of piston bottom end, so can measure the power value size of piston output by power sensor, passing ratio valve is adjusted the size of air storing cavity internal air pressure, accurately the power value of control output and easy to operate.
Piston is a cylindrical body, the one end being positioned at outside cylinder barrel is output terminal, be positioned at and on one end of cylinder barrel, have the first throttle orifice radially, pressurized gas in cylinder barrel by first radially throttle orifice between piston and cylinder barrel, form air film, there is the second throttle orifice radially cylinder barrel upper end, adopts the pressurized gas air feed in the second air storing cavity, at the gap of cylinder barrel and piston formation air film, two place's air films are that piston provides support and lubricates, and structure and plenum system are simple, bearing capacity good.
Radially near throttle orifice, be equipped with pressure relief groove, pressure relief groove communicates with extraneous normal pressure, prevents that cylinder barrel inner high voltage gas from entering air supporting gap air film is exerted an influence on the one hand, plays seal action, forms on the other hand atmospheric area in gap, promotes the formation of air film.
Advantage of the present utility model shows: simple in structure, good stability, precision are high.
Accompanying drawing explanation
Fig. 1 is that a kind of long distance is without friction constant force output air-floating apparatus schematic diagram
Fig. 2 is long-term job plug schematic diagram
Fig. 3 is cylinder barrel schematic diagram
Embodiment
In conjunction with Fig. 1～Fig. 3, a kind of long distance, without friction constant force output air-floating apparatus, comprises output cylinder and system for tracking; Output cylinder comprises long-term job plug 1, cylinder barrel 7, gas storage jacket 8, air pressure pressing plate 17, and system for tracking comprises slide block 31, linear rail 34, motor 36, ball screw 33, laser sensor 28, reflector 29 etc.; Output cylinder connects system for tracking by mounting bracket 30.
Long-term job plug 1 be sleeved in cylinder barrel 7 and and cylinder barrel 7 between there is minimum gap, gas storage jacket 8 is sleeved on outside cylinder barrel, end cap 3 and base 14 are sleeved on the two ends of gas storage jacket 8 and cylinder barrel 7 by bolt 2, long-term job plug 1 is through end cap 3.
End cap 3 and base 14 are fixed respectively in mounting bracket 30 two ends, mounting bracket 30 upper surfaces are sleeved on linear rail 34 by slide block 31, linear rail 34 two ends are supported by bearing 35, motor 36 is arranged on bearing 35 and connects ball screw 33, ball screw 33 is by nut seat 32 connection supports 30, laser displacement sensor 28 is arranged on the side of mounting bracket 30, and reflector 29 is sleeved on the top of long-term job plug 1, and laser displacement sensor 28 is relative with reflector 29 positions.
Between gas storage jacket 8 and cylinder barrel 7, form separate the first air storing cavity 19 and the second air storing cavity 22.Gas storage jacket 8 is provided with the first inlet hole 12 and the second inlet hole 5, the first inlet holes 12 communicate with the first air storing cavity 19, and the second inlet hole 5 communicates with the second air storing cavity 22.The first inlet hole 12 is connected with Proportional valve 6 by tracheae 13 respectively with the second inlet hole 5.
Air pressure pressing plate 17 be sleeved in cylinder barrel 7 and and cylinder barrel wall between gapped, 17 times installing force sensors 16 of air pressure pressing plate, power sensor 16 is fixed on base 14, has air outlet 15 on base 14.On air pressure pressing plate 17, be uniformly distributed along the circumference the 3rd radially throttle orifice 28, the three radially throttle orifice 28 communicate with inner cavity of cylinder by axial blind hole 29, the 3rd is radially provided with orifice plug in throttle orifice 28.
Long-term job plug 1 center has air inlet through hole 24 and unloads vent hole 26, air inlet through hole 24 and unload between vent hole 26 and isolate by sealing plug 9, and air inlet through hole 24 is positioned at one end of cylinder barrel 7 at long-term job plug 1; On long-term job plug 1, be uniformly distributed along the circumference first radially throttle orifice 10, the first radially throttle orifice 10 communicate with air inlet through hole 24, first radially throttle orifice 10 in axial direction have two groups, first is radially provided with orifice plug in throttle orifice 10; Long-term job plug 1 is provided with the first pressure relief groove, and the first pressure relief groove comprises the radial blind holes 23 being uniformly distributed along the circumference in the first groove 18 on external cylindrical surface, the first groove 18 and the first axial bore 25 communicating with radial blind holes 23; First axial bore 25 one end communicate with unloading vent hole 26 by the second groove 20 unloading in vent hole 26, and the other end of the first axial bore 25 seals by sprue 30; The first groove 18 has two groups and be positioned at first both sides of throttle orifice 10 radially; Radially isolation mutually between throttle orifice 10 of the first pressure relief groove and first.
Cylinder barrel 7 near one end of end cap 3 be uniformly distributed along the circumference second radially throttle orifice 4, the second radially throttle orifice 4 communicate with the second air storing cavity 22, second radially throttle orifice 4 in axial direction have two groups, second is radially provided with orifice plug in throttle orifice 4; Cylinder barrel 7 is provided with the second pressure relief groove, and the second pressure relief groove comprises the 3rd groove 21 on cylinder barrel inner cylindrical surface, the second axial bore 27 communicating with the 3rd groove 21, and described second axial bore 27 the other ends communicate with the through hole on end cap 3; The 3rd groove 21 is positioned at second below of throttle orifice 4 radially, radially isolation mutually between throttle orifice 4 of the second pressure relief groove and second; Cylinder barrel 7 is near one end of air pressure pressing plate 17 suction port 11 that is uniformly distributed along the circumference.
Claims (1)
1. long distance, without a friction constant force output air-floating apparatus, is characterized in that: comprise output cylinder and system for tracking; Described output cylinder comprises long-term job plug, cylinder barrel, gas storage jacket, air pressure pressing plate, and described system for tracking comprises slide block, linear rail, motor, ball screw, laser sensor and reflector; Described output cylinder connects system for tracking by mounting bracket;
Described long-term job plug sleeve be contained in cylinder barrel and and cylinder barrel between there is minimum gap, described gas storage jacket is sleeved on outside cylinder barrel, the two ends of described gas storage jacket and cylinder barrel are by end cap and base seal, described long-term job plug is through end cap, described mounting bracket two ends are fixed end lid and bottom seat respectively, described mounting bracket upper surface is contained on linear rail by slide block set, seat supports is passed through at described linear rail two ends, described motor is arranged on bearing and connects ball screw, described ball screw is by nut seat connection support, described laser displacement sensor is arranged on the side of mounting bracket, described reflector is sleeved on the top of long-term job plug, described laser displacement sensor is relative with reflector position,
Between described gas storage jacket and cylinder barrel, form the first separate air storing cavity and the second air storing cavity;
Described air pressure pressing plate be sleeved in cylinder barrel and and cylinder barrel wall between gapped, installing force sensor under described air pressure pressing plate, described power sensor is fixed on base, on described base, has air outlet;
Described long-term job plug center has air inlet through hole and unloads vent hole, described air inlet through hole and unload between vent hole and isolate by sealing plug, and described air inlet through hole is positioned at one end of cylinder barrel at long-term job plug;
Described long-term job first throttle orifice radially that is uniformly distributed along the circumference beyond the Great Wall, described first radially throttle orifice communicate with air inlet through hole, described first radially throttle orifice in axial direction have two groups at least; Described cylinder barrel is near one end of end cap second throttle orifice radially that is uniformly distributed along the circumference, described second radially throttle orifice communicate with the second air storing cavity; The 3rd throttle orifice radially that is uniformly distributed along the circumference on described air pressure pressing plate, the described the 3rd radially throttle orifice communicate with inner cavity of cylinder;
Described first radially throttle orifice, second radially throttle orifice and the 3rd radially in throttle orifice, orifice plug is all installed;
Described long-term job is provided with the first pressure relief groove beyond the Great Wall, and described the first pressure relief groove comprises the radial blind holes being uniformly distributed along the circumference in the first groove on external cylindrical surface, the first groove and the first axial bore communicating with radial blind holes; Described first axial bore one end communicates with unloading vent hole by the second groove unloading in vent hole, and the other end of described the first axial bore seals by sprue; The first groove on described external cylindrical surface has two groups and be positioned at first both sides of throttle orifice radially at least; Radially isolation mutually between throttle orifice of described the first pressure relief groove and first;
Described cylinder barrel is provided with the second pressure relief groove, described the second pressure relief groove comprise the 3rd groove on cylinder barrel inner cylindrical surface, with the second axial bore that the 3rd groove communicates, the described second axial bore the other end communicates with the through hole on end cap; Described the 3rd groove is positioned at second below of throttle orifice radially, radially isolation mutually between throttle orifice of described the second pressure relief groove and second;
Described cylinder barrel is near one end of air pressure pressing plate suction port that is uniformly distributed along the circumference, and described gas storage jacket is provided with the first inlet hole and the second inlet hole, and described the first inlet hole communicates with the first air storing cavity, and described the second inlet hole communicates with the second air storing cavity; Described the first inlet hole is connected with Proportional valve by tracheae respectively with the second inlet hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320646731.4U CN203685720U (en) | 2013-10-18 | 2013-10-18 | Long-distance zero-friction constant force output air flotation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320646731.4U CN203685720U (en) | 2013-10-18 | 2013-10-18 | Long-distance zero-friction constant force output air flotation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203685720U true CN203685720U (en) | 2014-07-02 |
Family
ID=51007628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320646731.4U Expired - Lifetime CN203685720U (en) | 2013-10-18 | 2013-10-18 | Long-distance zero-friction constant force output air flotation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203685720U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527532A (en) * | 2013-10-18 | 2014-01-22 | 浙江工业大学 | Long-distance friction-free constant-force output air floatation device |
| CN108302085A (en) * | 2018-03-15 | 2018-07-20 | 江苏大学 | A kind of double acting air supporting friction-free air cylinder of cylinder barrel independent gas supply |
-
2013
- 2013-10-18 CN CN201320646731.4U patent/CN203685720U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527532A (en) * | 2013-10-18 | 2014-01-22 | 浙江工业大学 | Long-distance friction-free constant-force output air floatation device |
| CN103527532B (en) * | 2013-10-18 | 2015-10-28 | 浙江工业大学 | A kind of long distance exports air-floating apparatus without friction constant force |
| CN108302085A (en) * | 2018-03-15 | 2018-07-20 | 江苏大学 | A kind of double acting air supporting friction-free air cylinder of cylinder barrel independent gas supply |
| CN108302085B (en) * | 2018-03-15 | 2023-09-22 | 江苏大学 | Double-acting air-floatation friction-free cylinder with cylinder barrel capable of independently supplying air |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203627406U (en) | Zero-friction constant force output air floatation device | |
| CN103527561B (en) | A kind of without friction constant force output air-floating apparatus | |
| CN103511391B (en) | A kind of constant force with gas storage jacket exports air-floating apparatus | |
| CN103527568B (en) | A kind of constant force output air-floating apparatus of following with guide rail | |
| CN103527554B (en) | A kind of nothing friction constant force with volume compensation exports air-floating apparatus | |
| CN103527570B (en) | A kind of high-precision constant force exports air-floating apparatus | |
| CN103511392B (en) | A kind of constant force output device of unaffected by disturbance of air pipes | |
| CN203685720U (en) | Long-distance zero-friction constant force output air flotation device | |
| CN103511366B (en) | Long distance constant force exports air-floating apparatus | |
| CN203548437U (en) | High-precision constant-power output air floating device | |
| CN103527532B (en) | A kind of long distance exports air-floating apparatus without friction constant force | |
| CN203627391U (en) | Constant force output air floatation device with air storage sleeve | |
| CN103523718B (en) | A kind of two dimensional motion constant force erecting by overhang | |
| CN203627431U (en) | Constant force output air floatation device with guide rail following | |
| CN203627350U (en) | Long-distance constant force output air floatation device | |
| CN203627388U (en) | Bidirectional constant force outputting air floatation device | |
| CN203627387U (en) | Constant force output device insusceptible to gas pipe disturbance | |
| CN203627390U (en) | Friction-free constant force output air floatation device with volume compensation | |
| CN103527552B (en) | A kind of not by the two-way constant-force pneumatic output unit that low pressure affects | |
| CN203558739U (en) | Long-distance two-dimensional constant-force hoisting device | |
| CN203627386U (en) | Bidirectional constant force pneumatic output device insusceptible to low pressure | |
| CN103527551B (en) | A kind of constant force with electromagnetic compensation exports air-floating apparatus | |
| CN103527560B (en) | A kind of constant force with compensation cylinder exports air-floating apparatus | |
| CN203545612U (en) | Two-dimensional movement constant-force hanging device | |
| CN203833573U (en) | Long-distance two-dimensional following constant force hoisting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140702 Effective date of abandoning: 20151028 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140702 Effective date of abandoning: 20151028 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |