CN102756271B - Four-freedom-degree precision platform using electromagnetic support - Google Patents
Four-freedom-degree precision platform using electromagnetic support Download PDFInfo
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- CN102756271B CN102756271B CN201210251650.4A CN201210251650A CN102756271B CN 102756271 B CN102756271 B CN 102756271B CN 201210251650 A CN201210251650 A CN 201210251650A CN 102756271 B CN102756271 B CN 102756271B
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Abstract
The invention provides a four-freedom-degree precision platform using electromagnetic support. The four-freedom-degree precision platform comprises a shell, a radial bearing assembly, a radial position sensor, an upper axial bearing assembly, a lower axial bearing assembly, an axial position sensor, a core shaft assembly, a step motor stator assembly, a photoelectric detector assembly, a sensor circuit, a power amplifier and an electromagnetic support control computer. With the adoption of the four-freedom-degree precision platform provided by the invention, the four-freedom-degree precise position of a large-size part and a medium-size part can be adjusted. By using an electromagnetic supporting platform and using the control computer to concentrated control, the four-freedom-degree precision platform has the advantages of simplicity in movement operation, high operation precision and high speed, and can be moved to any assigned position within a certain range.
Description
Technical field
The invention belongs to precision instrument technical field, particularly a kind of four-degree-of-freedom precision stage and system that adopts electromagnetism supporting.
Background technology
In some big-and-middle-sized equipment assemblings and installation process, sometimes need the position of some big-and-middle-sized parts to carry out accurate adjustment.In some cases, need the parts yardstick of adjusting can reach several meters, quality can reach hundreds of kilograms and even several tons, requires parts entirety to move very little distance to certain assigned direction when adjustment, adjust position accuracy demand and reach 0.01mm, and this adjustment process may need repeated multiple times.Though have use for laboratory three-freedom degree precision platform on market, its yardstick and bearing capacity are all less, cannot meet the requirement of adjusting big-and-middle-sized parts position.At present, in order to realize this function, special tooling is often installed at the scene, is moved parts by screw jack or the approximate frock of principle, measure amount of movement by dial gauge or amesdial.
Adopt special tooling to move parts often precision is poor, and three translational degree of freedom often influence each other, be difficult to realize the movement of independent one degree of freedom.Moving process generally needs manual operation, and amount of movement is wayward.Under many circumstances, owing to being subject to structural limitations, the measuring position of dial gauge or amesdial is different from move operation position, needs multiple people to operate and reading when mobile simultaneously, and difficult coordination, when operating cost.
Summary of the invention
(1) technical problem that will solve
The object of the invention is to provide a kind of heavy four-degree-of-freedom high accuracy platform, realize the high precision movement of the Three Degree Of Freedom within the specific limits of big-and-middle-sized parts, solve that prior art mobile accuracy is low, amount of movement is difficult to control, be difficult to measure, the problem such as when operating cost.
(2) technical scheme
In order to address the above problem, the four-degree-of-freedom workbench that the invention provides a kind of electromagnetism supporting, it comprises: computer is controlled in housing, journal bearing assembly, radial position sensor, upper cod assembly, lower axial bearing assembly, axial location sensor, mandrel component, step motor stator assembly, photoelectric detector assembly, sensor circuit, power amplifier, electromagnetism supporting.
Preferably, mandrel component comprises: mandrel, fixture interface, thrust disc, stepping motor rotor assembly, code-disc.
Preferably, fixture interface and the machine-shaping of mandrel one.
Preferably, thrust disc, stepping motor rotor assembly, code-disc are sleeved on mandrel, and connect firmly with mandrel.
Preferably, radial position sensor, axial location sensor, photoelectric detector are electrically connected on control circuit, sensor circuit is electrically connected to electromagnetism supporting and controls on computer, electromagnetism supporting is controlled computer and is electrically connected on power amplifier, and power amplifier is electrically connected on journal bearing assembly, upper cod assembly, lower axial bearing assembly, step motor stator assembly.
Preferably, when the work of electromagnetism supporting table, mandrel component is subject to electromagnetic force and remains on suspended state, contactless with stator module.
Preferably, the radial position of detecting core shaft in real time respectively of radial position sensor, axial location sensor, photoelectric detector, axial location and circumferential corner, measuring-signal obtains position signalling after sensor circuit is processed, and sends in real time electromagnetism supporting to and controls computer.
Preferably, electromagnetism supporting is controlled computer from the instruction of main control computer receiving position, utilize control algolithm, the position signalling sending according to the position command receiving and sensor circuit, calculate in real time journal bearing assembly, upper cod assembly, lower axial bearing assembly, the control electric current of step motor stator assembly, and in real time control current-order is sent to power amplifier, the position signalling simultaneously sensor circuit being sent is sent to main control computer in real time, power amplifier is according to the instruction of electromagnetism supporting control computer, in real time corresponding current is outputed to journal bearing assembly, upper cod assembly, lower axial bearing assembly, step motor stator assembly, the electromagnetic force that electric current produces makes mandrel component remain on the position that main control computer is specified.
Preferably, when mandrel component is subject to External force interference and departs from assigned address, or the instruction of main control computer location is while changing, and the position of appointment is controlled computer and can in time mandrel component be moved to according to sensor signal in electromagnetism supporting.
The present invention also provides a kind of four-degree-of-freedom exquisite system that adopts electromagnetism supporting, it comprises: the four-degree-of-freedom precision stage of the aforesaid electromagnetism supporting of two covers, two sleeve clamps, a set of main control computer, two cover supporting members, wherein, the electromagnetism supporting of electromagnetism supporting four-degree-of-freedom precision stage is controlled computer and is electrically connected to described main control computer, every cover electromagnetism supporting table and a set of fixture machinery connect firmly, and the automatically controlled workbench of every cover and a set of supporting member machinery connect firmly.
(3) beneficial effect
The present invention can realize the exact position adjustment of the four-degree-of-freedom of big-and-middle-sized parts, owing to adopting electromagnetism support platform, and adopts control computer centralized Control, therefore move operation is simple, precision is high, and speed is fast, is movable within the specific limits any given position.
Description of the invention provides for example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present invention and practical application, thereby and makes those of ordinary skill in the art can understand the present invention's design to be suitable for the various embodiment with various amendments of special-purpose.
Brief description of the drawings
Further describe the present invention with reference to the accompanying drawings and in conjunction with example.Wherein:
Fig. 1 is the electromagnetism supporting four-degree-of-freedom precision stage schematic diagram according to the embodiment of the present invention.
Fig. 2 is the electromagnetism supporting four-degree-of-freedom exquisite system schematic diagram according to the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 1, it controls computer by housing, journal bearing assembly, radial position sensor, upper cod assembly, lower axial bearing assembly, axial location sensor, mandrel component, step motor stator assembly, photoelectric detector assembly, sensor circuit, power amplifier, electromagnetism supporting and forms electromagnetism supporting four-degree-of-freedom Working table structure schematic diagram provided by the invention.
Wherein, each Reference numeral implication is: 1, fixture interface, 2, workbench mandrel, 3, shell, 4, upper cod assembly, 5, thrust disc, 6, lower axial bearing assembly, 7, radial position sensor, 8, journal bearing assembly, 9, step motor stator assembly, 10, code-disc, 11, photoelectric detector, 12, axial location sensor, 13, stepping motor rotor assembly
Wherein, mandrel component is made up of mandrel, fixture interface, thrust disc, stepping motor rotor assembly, code-disc, fixture interface and the machine-shaping of mandrel one, and thrust disc, stepping motor rotor assembly, code-disc are sleeved on mandrel, and connect firmly with mandrel.
Radial position sensor, axial location sensor, photoelectric detector are electrically connected on control circuit, sensor circuit is electrically connected to electromagnetism supporting and controls on computer, electromagnetism supporting is controlled computer and is electrically connected on power amplifier, and power amplifier is electrically connected on journal bearing assembly, upper cod assembly, lower axial bearing assembly, step motor stator assembly.
When the work of electromagnetism supporting table, mandrel component is subject to electromagnetic force and remains on suspended state, contactless with stator module.
Radial position sensor, axial location sensor, the photoelectric detector radial position of detecting core shaft in real time respectively, axial location and circumferentially corner, measuring-signal obtains position signalling after sensor circuit is processed, send in real time electromagnetism supporting to and control computer, electromagnetism supporting is controlled computer from the instruction of main control computer receiving position, utilize control algolithm, the position signalling sending according to the position command receiving and sensor circuit, calculate in real time journal bearing assembly, upper cod assembly, lower axial bearing assembly, the control electric current of step motor stator assembly, and in real time control current-order is sent to power amplifier, the position signalling simultaneously sensor circuit being sent is sent to main control computer in real time, power amplifier is according to the instruction of electromagnetism supporting control computer, in real time corresponding current is outputed to journal bearing assembly, upper cod assembly, lower axial bearing assembly, step motor stator assembly, the electromagnetic force that electric current produces makes mandrel component remain on the position that main control computer is specified.
When mandrel component is subject to External force interference and departs from assigned address, or the instruction of main control computer location is while changing, and the position of appointment is controlled computer and can in time mandrel component be moved to according to sensor signal in electromagnetism supporting.
The direction of the axis that three directions that are marked with described electromagnetism supporting four-degree-of-freedom precision stage move, centering while being convenient to assemble.
As shown in Figure 2, electromagnetism supporting four-degree-of-freedom exquisite system provided by the invention comprises the four-degree-of-freedom precision stage of two cover electromagnetism supportings, two sleeve clamps, a set of main control computer, two cover supporting members.
Wherein, each Reference numeral implication is: 1, upper support member, 2, the magnetic bearing four-degree-of-freedom precision stage that powers on, 3, upper fixture, 4, workpiece, 5, lower clamp, 6, lower electromagnetism supporting four-degree-of-freedom precision stage, 7, lower electric cabinet, 8, lower support member, 9, upper electric cabinet.
The electromagnetism supporting of electromagnetism supporting four-degree-of-freedom precision stage is controlled computer and is electrically connected to described main control computer, and every cover electromagnetism supporting table and a set of fixture machinery connect firmly, and the automatically controlled workbench of every cover and a set of supporting member machinery connect firmly.
The step that use the present invention moves parts (hereinafter referred to as workpiece) is as follows:
Supporting member is arranged on firm basis;
Make two cover workbench all get back to zero-bit by controlling computer, adjust supporting member position, the axiality that ensures two sleeve clamps is less than 0.01mm, and the distance that the depth of parallelisms of respective axes of two cover workbench are less than 0.1/100, two sleeve clamp equals the be installed distance at position of workpiece;
Workpiece is installed on fixture;
In the time of needs travelling workpiece, send instruction by controlling computer to two cover workbench, make two cover workbench move identical distance to identical direction.
Claims (7)
1. a four-degree-of-freedom workbench for electromagnetism supporting, is characterized in that, comprising:
Computer is controlled in housing, journal bearing assembly, radial position sensor, upper cod assembly, lower axial bearing assembly, axial location sensor, mandrel component, step motor stator assembly, photoelectric detector assembly, sensor circuit, power amplifier, electromagnetism supporting;
Mandrel component comprises: mandrel, fixture interface, thrust disc, stepping motor rotor assembly, code-disc, and thrust disc, stepping motor rotor assembly, code-disc are sleeved on mandrel, and connect firmly with mandrel;
Radial position sensor, axial location sensor, photoelectric detector are electrically connected on control circuit, sensor circuit is electrically connected to electromagnetism supporting and controls on computer, electromagnetism supporting is controlled computer and is electrically connected on power amplifier, and power amplifier is electrically connected on journal bearing assembly, upper cod assembly, lower axial bearing assembly, step motor stator assembly.
2. workbench as claimed in claim 1, is characterized in that:
Fixture interface and the machine-shaping of mandrel one.
3. workbench as claimed in claim 1, is characterized in that:
When the work of electromagnetism supporting table, mandrel component is subject to electromagnetic force and remains on suspended state, contactless with stator module.
4. workbench as claimed in claim 1, is characterized in that:
The radial position of detecting core shaft in real time respectively of radial position sensor, axial location sensor, photoelectric detector, axial location and circumferential corner, measuring-signal obtains position signalling after sensor circuit is processed, and sends in real time electromagnetism supporting to and controls computer.
5. workbench as claimed in claim 1, is characterized in that:
Electromagnetism supporting is controlled computer from the instruction of main control computer receiving position, utilize control algolithm, the position signalling sending according to the position command receiving and sensor circuit, calculate in real time journal bearing assembly, upper cod assembly, lower axial bearing assembly, the control electric current of step motor stator assembly, and in real time control current-order is sent to power amplifier, the position signalling simultaneously sensor circuit being sent is sent to main control computer in real time, power amplifier is according to the instruction of electromagnetism supporting control computer, in real time corresponding current is outputed to journal bearing assembly, upper cod assembly, lower axial bearing assembly, step motor stator assembly, the electromagnetic force that electric current produces makes mandrel component remain on the position that main control computer is specified.
6. workbench as claimed in claim 1, is characterized in that:
When mandrel component is subject to External force interference and departs from assigned address, or the instruction of main control computer location is while changing, and the position of appointment is controlled computer and can in time mandrel component be moved to according to sensor signal in electromagnetism supporting.
7. a four-degree-of-freedom exquisite system that adopts electromagnetism supporting, is characterized in that, comprising:
The four-degree-of-freedom precision stage of the electromagnetism supporting of two covers as described in one of claim 1～6, two sleeve clamps, a set of main control computer, two cover supporting members, wherein, the electromagnetism supporting of electromagnetism supporting four-degree-of-freedom precision stage is controlled computer and is electrically connected to described main control computer, and every cover electromagnetism supporting table and a set of fixture machinery connect firmly, and the automatically controlled workbench of every cover and a set of supporting member machinery connect firmly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210251650.4A CN102756271B (en) | 2012-07-19 | 2012-07-19 | Four-freedom-degree precision platform using electromagnetic support |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210251650.4A CN102756271B (en) | 2012-07-19 | 2012-07-19 | Four-freedom-degree precision platform using electromagnetic support |
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| CN102756271A CN102756271A (en) | 2012-10-31 |
| CN102756271B true CN102756271B (en) | 2014-10-22 |
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| CN113020936B (en) * | 2021-03-17 | 2022-06-17 | 哈电发电设备国家工程研究中心有限公司 | Thrust disc and shaft sleeve mounting device and method applied to vertical rotary machine |
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| CN101987413A (en) * | 2009-07-30 | 2011-03-23 | 中国商用飞机有限责任公司 | Three-dimensional precision control supporting platform |
| CN201913453U (en) * | 2010-12-21 | 2011-08-03 | 中国航天科技集团公司第五研究院第五一八研究所 | 6-DOF (degree of freedom) precision installation device for plate-type structures |
| WO2012062640A1 (en) * | 2010-11-12 | 2012-05-18 | Aktiebolaget Skf | Method for mounting an anti-friction bearing carrier module, and anti-friction bearing carrier module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06143004A (en) * | 1992-11-10 | 1994-05-24 | Seiko Seiki Co Ltd | Magnetic bearing type spindle device |
| CN101275883A (en) * | 2007-03-26 | 2008-10-01 | 北京智源博科技有限公司 | Uniaxial full physical simulation magnetic floating platform |
| CN101075098A (en) * | 2007-04-27 | 2007-11-21 | 清华大学 | Ultrathin triple-freedom inching work table |
| CN101290808A (en) * | 2008-06-06 | 2008-10-22 | 华中科技大学 | 3 freedom degree ultra-precise micro displacement workbench |
| CN101987413A (en) * | 2009-07-30 | 2011-03-23 | 中国商用飞机有限责任公司 | Three-dimensional precision control supporting platform |
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| WO2012062640A1 (en) * | 2010-11-12 | 2012-05-18 | Aktiebolaget Skf | Method for mounting an anti-friction bearing carrier module, and anti-friction bearing carrier module |
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