CN104015117B - A kind of amplitude-controlled small-bore aspheric surface polishing device - Google Patents
A kind of amplitude-controlled small-bore aspheric surface polishing device Download PDFInfo
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- CN104015117B CN104015117B CN201410277316.5A CN201410277316A CN104015117B CN 104015117 B CN104015117 B CN 104015117B CN 201410277316 A CN201410277316 A CN 201410277316A CN 104015117 B CN104015117 B CN 104015117B
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- magnetostriction
- rubbing head
- diameter
- body element
- amplitude
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- 238000005498 polishing Methods 0.000 title claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 25
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical group [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052733 gallium Inorganic materials 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims 1
- 238000003754 machining Methods 0.000 description 13
- 238000000227 grinding Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- 229910000807 Ga alloy Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
- B24B13/01—Specific tools, e.g. bowl-like; Production, dressing or fastening of these tools
- B24B13/012—Specific tools, e.g. bowl-like; Production, dressing or fastening of these tools conformable in shape to the optical surface, e.g. by fluid pressure acting on an elastic membrane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The present invention is a kind of amplitude-controlled small-bore aspheric surface polishing device, and the composition of this device comprises rubbing head, magnetostriction body element and base; Rubbing head carries out interference fit by the hole of axle and magnetostriction element, and magnetostriction element carries out interference fit by the cross recess of four thin bar constructions of magnetostriction and the cross boss of base; The material of described magnetostriction body element is gallium magnetostriction materials Fe
83ga
17, output cross recess by Linear cut bottom it, it is carefully excellent that four limits of cross recess become four magnetostriction; Top is provided with perforate, and diameter mates with the axle of rubbing head; The thin rod of every root magnetostriction coils respectively.The present invention has the advantages such as volume is little, structure is simple, easy to use, can carry out polishing operation on small parts, when processing different materials and difform part, does not need to change rubbing head.
Description
Technical field
The present invention relates to a kind of Novel polishing device, particularly small-bore aspheric burnishing device, core is a kind of vibrating elements made by iron gallium magnetostriction materials.This burnishing device utilizes the Magnetostrictive Properties of iron gallium alloy, can export vibration, for small-bore aspheric surface part provides high efficiency and high-quality polishing in the vibration end of burnishing device.
Technical background
Small-bore aspheric surface part is a kind of very important product members, in the systems such as optics, such as use small-bore aspheric surface part can improve image quality, improve the optical property of instrument, reduce the number of optical element, thus simplification apparatus structure, alleviate instruments weight and reduce production cost.Along with photoelectric communication, bioengineering, the developing rapidly of aerospace industries, the demand sharp increase of small-bore aspheric surface part.
Small-bore aspheric surface quality not only requires to reach nano level surface roughness, and requires the form accuracy of submicron order and minimum sub-surface damage.Small-bore aspheric processing space is less in addition, and machining tool is difficult to process it.At present, small-bore aspherical mirror machining adopts the ultra-precise cutting of single-point diamond and the precision grinding machining method of resinoid bond micro mist emery wheel.Ultraprecise turning and grinding inevitably form processing lines and blemish layer at piece surface, and these surface quality defects directly can have influence on the performance of part.In order to improve small-bore aspheric machining accuracy further, also need to carry out after ultra-precise cutting, grinding Ultraprecise polished.
At present, Ultraprecise polishedly can be divided into contact-type polishing and non-contact type polishing for aspheric, contact-type polishing has: air bag polishing, MRF, manual polishing etc.; Non-contact type polishing mode has: Jet Polishing, ion beam polishing, chemical polishing etc.Consider small-bore aspherical mirror machining narrow space, and cost, high-precision polishing requirement, mainly utilize air bag polishing, manual polishing, Jet Polishing etc.Adopt air bag polishing method, although can obtain very high machining accuracy, different processing profiles needs different rubbing heads, and flexibility (adaptability) of operation is not strong, and rubbing head needs constantly finishing to keep machining accuracy, and working (machining) efficiency and precision are affected; Manual polishing does not need the polissoir of automation, and processing cost is lower, but manual polishing exists the problems such as the low and machining accuracy of working (machining) efficiency is unstable; Jet Polishing relies on abrasive jet percussion to remove material, be applicable to small-bore dark recessed aspheric polishing, but polishing clearance is lower.
Summary of the invention
For Problems existing in existing polishing processing method, consider the processing characteristic of small-bore aspheric surface part, in conjunction with magnetostriction materials characteristic, devise a kind of amplitude-controlled burnishing device based on magnetostriction materials.This burnishing device is formed primarily of rubbing head, magnetostriction element, base three part.Wherein, rubbing head adopts stainless steel (12Cr17Ni7) turning of high rigidity to form, and installs polyurethane rubber (IRHD90) cover additional at rounded nose, improves the rub proofness of grinding head, and improves polishing precision.Base adopts industry No. 10 steel with higher magnetic conduction ability.Body element adopts cylindrical iron gallium magnetostriction materials (Fe
83ga
17), one end of cylindrical material cut out four magnetostriction by linear cutter carefully excellent, and coil on the thin rod of every root, by changing the size of electric current in coil, change the magnetic field intensity in coil, make four thin rods of magnetostriction have elongation in various degree, cause rubbing head three-dimensional motion.By with base engagement, four magnetostrictive rods of stationary body element.Base one side and main part form magnetic circuit, improve the magnetic field intensity in coil, provide the free degree to retrain on the other hand, facilitate fixture to fix.
Technical scheme of the present invention is:
A kind of amplitude-controlled small-bore aspheric surface polishing device, its composition comprises rubbing head, magnetostriction body element and base;
The material of described rubbing head is stainless steel, and bottom is axle, and middle part is cylinder, and top is round table-like, and top is sphere, top and top sleeve integrating have same shape polyurethane rubber sleeve;
The material of described magnetostriction body element is iron gallium magnetostriction materials Fe
83ga
17, output cross recess by Linear cut bottom it, it is carefully excellent that four limits of cross recess become four magnetostriction, and four thin rods of magnetostriction distribute symmetrically, and length is identical with thickness; Top is provided with perforate, and diameter mates with the axle of rubbing head; The thin rod of every root magnetostriction coils respectively; The width of two grooves of cross recess is identical;
Described base is cylindrical bar, and diameter is with magnetostriction body element; The top of base has cross boss, and the width of every bar boss of cross boss is with the recess width of cross recess;
Rubbing head carries out interference fit by the hole of axle and magnetostriction element, and magnetostriction element carries out interference fit by the cross recess of four thin bar constructions of magnetostriction and the cross boss of base.
Described magnetostriction body element is cylindrical bar, and diameter is 10mm, and length is 40mm; The recess width of cross recess is 3.6mm, and the degree of depth is 20mm; The diameter of another stomidium of magnetostriction body element is 3mm, and the degree of depth is 8mm.
Described base adopts industry No. 10 steel, and length is 20mm, and diameter is the cylindrical bar of 10mm; The boss width of cross boss is 3.6mm, is highly 5mm.
Described rubbing head is the cylindrical bar of stainless steel, and length is 40mm, and diameter is 6mm; The diameter of the axle of rubbing head is 3mm, and length is 7.5mm; On ballhead, the radius of ball is 1mm, the height 5.41mm of round platform, and lower circle diameter is 6mm, and upper circle diameter is 1.44mm.
The wire diameter of the coil that four thin rods of magnetostriction of described magnetostriction body element are wound with respectively is 0.2mm, and the number of turn is 250 circles.
The thickness of described polyurethane rubber sleeve is 1 ~ 2mm.
Beneficial effect of the present invention is: the present invention passes through the phase difference between each road electric current of control inputs, can export multiple Polishing Motion form: linear, oval or circle; The size of control inputs electric current or frequency, can export controlled Oscillation Amplitude.The present invention focuses on magnetic structure simultaneously, makes magnetostriction body element and base form closed magnetic circuit, decreases leakage field, improve the utilization rate in magnetic field, the volume of the required coil of minimizing.
The present invention is a kind of contact-type burnishing device, there is the advantages such as volume is little, structure is simple, easy to use, polishing operation (below diameter 10mm) can be carried out on small parts, when processing different materials and difform part, do not need to change rubbing head, only need to change Polishing Motion form by controlling electric current, or pass through to control the size of electric current and the amplitude of frequency shift vibration, meet different process requirements.In operating frequency in the scope of 6-9kHz, adjustable amplitude scope is 0-30 μm, and maximum material removing rate can reach 0.5 μm/min.
Accompanying drawing explanation
Fig. 1 is the λ-H loop line of iron gallium magnetostriction materials.
Fig. 2 is the integral installation figure of burnishing device.
Fig. 3 is the magnetostriction body element structure chart of burnishing device.
Fig. 4 is the understructure figure of burnishing device.
Fig. 5 is the polishing head structure figure of burnishing device.
Fig. 6 is power frequency is the radial amplitude waveform that under the condition of 8000Hz, burnishing device exports.
Wherein, 1-polyurethane rubber sleeve; 2-rubbing head; 3-magnetostriction body element; 4-coil; 5-base; 6-hole; 7-cross recess; 8-magnetostriction is carefully excellent; 9-cross boss; 10-groove plane; 11-ball head knife; 12-axle.
Detailed description of the invention
Describe specific embodiment of the invention in detail below in conjunction with accompanying drawing and technical scheme, but they not impose any restrictions the present invention.
As shown in Figure 2, its composition comprises the amplitude-controlled small-bore aspheric surface polishing device of one of the present invention: rubbing head 2, magnetostriction body element 3 and base 5;
The structure of described rubbing head 2 is as Fig. 5, and its material is stainless steel, and bottom is axle 12, and middle part is cylinder, and top is round table-like, and top is sphere, top and top sleeve integrating have same shape polyurethane rubber sleeve 1;
Described magnetostriction body element 3 material is iron gallium magnetostriction materials Fe
83ga
17, output cross recess 7 by Linear cut bottom it, it is carefully excellent that four limits of cross recess 7 become four magnetostriction, and four thin rods 8 of magnetostriction distribute symmetrically, and length is identical with thickness; Top is provided with perforate 6, and diameter mates with the axle 12 of rubbing head 11; The thin rod 8 of every root magnetostriction coils 4 respectively; The width of two grooves of cross recess 7 is identical;
Described base 5 is cylindrical bar, and diameter is with magnetostriction body element 3; The top of base has cross boss 9, and the width of every bar boss of cross boss 9 is with the recess width of cross recess 7;
Rubbing head 2 carries out interference fit by axle 12 and the hole 6 of magnetostriction element 3, and the cross recess 7 that magnetostriction element 3 is consisted of the thin rod 8 of four magnetostriction carries out interference fit with the cross boss 9 of base 5.
Magnetostriction body element adopts iron gallium magnetostriction materials, and it has, and power output is high, anti-fatigue ability strong, adapt to the advantages such as adverse circumstances, the iron gallium magnetostriction materials (Fe that the present invention adopts
83ga
17), as shown in Figure 1, wherein transverse axis coordinate H represents magnetic field intensity to the relation of its magnetostriction coefficient and externally-applied magnetic field, and unit is kA/m, and ordinate of orthogonal axes λ represents magnetostriction coefficient, and unit is 1,000,000/.
The material shape that magnetostriction body element 3 adopts is cylindrical bar, diameter is 10mm, and length is 40mm, first through linear cutter, the cross recess 7 of a full symmetric is cut out from bar one end, recess width is 3.6mm, and the degree of depth is 20mm, obtains the thin rod 8 of four identical and symmetrical magnetostriction, cross section is fan-shaped, again in the center of magnetostriction body element 3 other end punching 6, the diameter in hole is 3mm, and the degree of depth is 8mm.After machining, the shape of magnetostriction body element as shown in Figure 3.
Base adopts industry No. 10 steel, and going out a segment length by lathe process is 20mm, and diameter is the cylindrical bar of 10mm, application milling machine processes the cross boss 9 of a full symmetric, and boss width is 3.6mm, is highly 5mm, add man-hour, four groove planes 10 be ensured at grade.By adding man-hour, allowance control being carried out to boss width, making the cross boss 9 of base can realize interference fit with the cross recess 7 of magnetostriction body element.After machining, the shape of base as shown in Figure 4.
Rubbing head adopts the stainless steel shaft (12Cr17Ni7) of high strength to be material, and shape is cylindrical bar, and length is 40mm, and diameter is 6mm.Going out a diameter in one end of bar by lathe process is 3mm, and length is the axle 12 of 7.5mm, adds and carries out allowance control to the diameter of axle 12 man-hour, enables axle realize interference fit with the hole 6 of magnetostriction body element.The other end of bar goes out a ballhead 11 by lathe process, and wherein the radius of ball is 1mm, and the length of round platform is 5.41mm, and lower circle diameter is 6mm, and upper circle diameter is 1.44mm, and after machining, the shape of rubbing head as shown in Figure 5.
Assembling process: reserve 5mm region and base 5 carries out assorted installation bottom the thin rod 8 of four magnetostriction of magnetostriction body element 3, remaining area kinking circle 4, requirement wire diameter is 0.2mm, the number of turn is 250 circles, then the cross recess 7 of the cross boss 9 of base and magnetostriction body element is carried out cooperation to fix, carry out bonding at contact surface AB glue after applying certain axial compressive force, the hole 6 of magnetostriction main part and the axle 12 of rubbing head is finally made to coordinate fixing, the ballhead 11 of rubbing head installs additional polyurethane rubber sleeve 1 (IRHD90), thickness is 1.5mm, as shown in Figure 2.
Control procedure: be fixed by the burnishing device assembled with jig, then in the coil 4 of the thin rod of every root, DC current (bias magnetic field) and alternating current (alternating magnetic field) are connected in parallel connection respectively.The rule of logical DC current: each coil leads to the DC current of formed objects, the magnetic flux that DC current logical on cornerwise coil produces is in the same way, the magnetic flux that DC current logical on adjacent windings produces is reverse, and DC circuit magnetic loop can be made like this to close.The rule of indirect current stream: the frequency of the alternating current that each coil leads to is identical with amplitude size, in certain sequence the phase place of (clockwise or counterclockwise) alternating current be respectively 0 °, θ °, 180 ° and (180+ θ) °, wherein the scope of θ is 0-180 °, and interchange magnetic circuit can be made like this to close.Require bias current 0.12A, alternating current peak value 0.15A.By control the frequency of alternating current of lead to, the vibration frequency of burnishing device can be changed, change output amplitude simultaneously.By control the θ angle of alternating current that leads to, the vibration mode of burnishing device can be controlled: when θ=0 ° or 180 °, the output of rubbing head is linear reciprocating motion; As 0 ° of < θ <90 ° or 90 ° of < θ <180 °, the output of polishing head end is oval movement locus; When θ=90 °, the output of polishing head end is the movement locus of circle.
The operating frequency of design of the present invention is 6-9kHz, Fig. 6 is the outputting radial amplitude waveform of burnishing device when 8kHz, and amplitude can reach 30 μm, and in figure, abscissa T represents the time, and unit is millisecond, and ordinate X represents outputting radial amplitude, and unit is micron.As shown in Figure 6, the present invention has comparatively large amplitude in radial direction, can meet polishing requirement.
Unaccomplished matter of the present invention is known technology.
Claims (6)
1. an amplitude-controlled small-bore aspheric surface polishing device, the composition that it is characterized by this device comprises rubbing head, magnetostriction body element and base;
The material of described rubbing head is stainless steel, and bottom is axle, and middle part is cylinder, and top is round table-like, and top is sphere, and top and top sleeve integrating have the polyurethane rubber sleeve of same shape;
The material of described magnetostriction body element is iron gallium magnetostriction materials Fe
83ga
17, its shape is cylindric, and cross recess is outputed by Linear cut in bottom, and it is carefully excellent that four limits of cross recess become four magnetostriction, and four thin rods of magnetostriction distribute symmetrically, and their length is identical, and thickness is also identical; Top is provided with perforate, and diameter mates with the axle of rubbing head; The thin rod of every root magnetostriction coils respectively; The width of two grooves of cross recess is identical;
Described base is cylindrical bar, and diameter is with magnetostriction body element; The top of base has cross boss, and the width of every bar boss of cross boss is with the recess width of cross recess;
Rubbing head carries out interference fit by the hole of axle and magnetostriction body element, and magnetostriction body element carries out interference fit by the cross recess of four thin bar constructions of magnetostriction and the cross boss of base.
2. amplitude-controlled small-bore aspheric surface polishing device as claimed in claim 1, it is characterized by described magnetostriction body element is cylindrical bar, and diameter is 10mm, and length is 40mm; The recess width of cross recess is 3.6mm, and the degree of depth is 20mm; The diameter of magnetostriction body element top drilling is 3mm, and the degree of depth is 8mm.
3. amplitude-controlled small-bore aspheric surface polishing device as claimed in claim 1, it is characterized by described base and adopt industry No. 10 steel, length is 20mm, and diameter is the cylindrical bar of 10mm; The boss width of cross boss is 3.6mm, is highly 5mm.
4. amplitude-controlled small-bore aspheric surface polishing device as claimed in claim 1, it is characterized by described rubbing head is that the cylindrical bar of stainless steel processes, and the length of bar is 40mm, and diameter is 6mm; The diameter of the axle of rubbing head is 3mm, and length is 7.5mm; The radius of rubbing head sphere is 1mm; The height 5.41mm of round platform, lower circle diameter is 6mm, and upper circle diameter is 1.44mm.
5. amplitude-controlled small-bore aspheric surface polishing device as claimed in claim 1, the wire diameter that it is characterized by the coil that four thin rods of magnetostriction of described magnetostriction body element are wound with respectively is 0.2mm, and the number of turn is 250 circles.
6. amplitude-controlled small-bore aspheric surface polishing device as claimed in claim 1, the thickness that it is characterized by described polyurethane rubber sleeve is 1 ~ 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410277316.5A CN104015117B (en) | 2014-06-20 | 2014-06-20 | A kind of amplitude-controlled small-bore aspheric surface polishing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410277316.5A CN104015117B (en) | 2014-06-20 | 2014-06-20 | A kind of amplitude-controlled small-bore aspheric surface polishing device |
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| CN104015117A CN104015117A (en) | 2014-09-03 |
| CN104015117B true CN104015117B (en) | 2016-03-30 |
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| CN201410277316.5A Expired - Fee Related CN104015117B (en) | 2014-06-20 | 2014-06-20 | A kind of amplitude-controlled small-bore aspheric surface polishing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105881176B (en) * | 2016-06-18 | 2018-04-17 | 河北工业大学 | A kind of magnetostriction burnishing device of double stick structure |
| CN110170887B (en) * | 2019-06-19 | 2023-11-14 | 河北工业大学 | Laser and magnetorheological fluid coupling polishing device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5361543A (en) * | 1992-10-01 | 1994-11-08 | Michael Bory | Device for ultrasonic erosion of a workpiece |
| JPH06297303A (en) * | 1993-04-13 | 1994-10-25 | Mitsubishi Heavy Ind Ltd | Ultrasonic machining head |
| JP2004345061A (en) * | 2003-05-26 | 2004-12-09 | Toshiba Corp | Mobile ultrasonic machining device and ultrasonic machining method |
| CN1326661C (en) * | 2005-03-10 | 2007-07-18 | 浙江工业大学 | Magnetic rheology type flexible polisher with air bag |
| CN201143613Y (en) * | 2008-01-18 | 2008-11-05 | 郝俊山 | Vibration burnishing device |
| CN101545992A (en) * | 2009-04-14 | 2009-09-30 | 南阳市汇丰光电工程有限责任公司 | Solar energy photoelectric conversion focusing lens processing technology and special fixture therefor |
| CN102837229A (en) * | 2012-09-25 | 2012-12-26 | 山东理工大学 | Device and method for automatically exchanging magnetic grinding materials of magnetic polishing machining central machine tool |
| CN203901076U (en) * | 2014-06-20 | 2014-10-29 | 河北工业大学 | Small-bore aspherical polishing device with controllable vibration amplitude |
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