CN103624350B - A kind of integrated impeller blade electrolysis polish forming device and integrated impeller blade thereof shape method - Google Patents

A kind of integrated impeller blade electrolysis polish forming device and integrated impeller blade thereof shape method Download PDF

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Publication number
CN103624350B
CN103624350B CN201310590896.9A CN201310590896A CN103624350B CN 103624350 B CN103624350 B CN 103624350B CN 201310590896 A CN201310590896 A CN 201310590896A CN 103624350 B CN103624350 B CN 103624350B
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axle
axis
processing
impeller blade
blade
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CN201310590896.9A
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Chinese (zh)
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CN103624350A (en
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王福元
赵建社
徐家文
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Nanjing University of Aeronautics and Astronautics
Yangcheng Institute of Technology
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Nanjing University of Aeronautics and Astronautics
Yangcheng Institute of Technology
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Abstract

The invention discloses a kind of integrated impeller blade electrolysis polish forming device and integrated impeller blade shapes method, this device includes five axle four-axle linkage electrolytic machine tools, the Shaped Cathode of the blade processing being arranged on five axle four-axle linkage electrolytic machine tools, the intelligent pulse power being connected with five axle four-axle linkage electrolytic machine tools and control system, the electrolyte conveyer device being connected with the Shaped Cathode of blade processing.The electrolysis polish forming device that the present invention provides is reasonable in design, and working (machining) efficiency is high, and especially machining accuracy is high, can well realize free form surface integrated impeller blade polish, can meet aero-engine integrated impeller blade requirement on machining accuracy.The method that shapes that the present invention provides, workable, work efficiency is high, and the integrated impeller blade precision that processing prepares is high, can overcome many deficiencies of prior art.

Description

A kind of integrated impeller blade electrolysis polish forming device and integrated impeller blade thereof shape method
Technical field
The present invention relates to a kind of shaped device for the electrolysis polish of aero-engine free form surface integrated impeller blade and processing thereof Forming method, belongs to technical field of electrolysis processing.
Background technology
In aero-engine, use blisk is the development trend of World Airways engine technology, in order to expand blisk in boat Application in empty electromotor first has to solve a manufacture difficult problem for blisk.The blisk that the aero-engine of China is used at present Negligible amounts, it is impossible to the widely used manufacturing technology that main reason is that blisk does not the most solve.Aero-engine is whole Body leaf dish manufactures difficult point and is the complex profile of blade, higher machining accuracy and surface quality requirements, high blade processing one Cause property, blade processing deformation and the material used.Integrated impeller blade surface mostly is free form surface, machining accuracy usually requires that Between ± 0.05~0.1mm, surface roughness typically requires that into Ra0.3~0.5 μm, blade thinnest part is about 1~2mm, Some blade is the thinnest, and material mostly is high temperature alloy or titanium alloy.If processing the table such as plane, the face of cylinder on machining shape Face reaches such machining accuracy and is easier to realize, but it is relatively difficult to reach such processing request on Machining Free-Form Surfaces. Even if using common cutting working method processing high temperature alloy or titanium alloy material the most relatively difficult in terms of rapidoprint, for The aero-engine free form surface blisk that high temperature alloy or titanium alloy manufacture, owing in processing, tool motion space receives limit It is the most difficult that system blade to be made reaches such machining accuracy, and therefore aero-engine blisk is processed in worldwide It it is all a difficult problem.
Integrated impeller blade electrochemical Machining Technology has at home and abroad carried out putting into practice for many years, from the point of view of applicable cases, machining accuracy with Many weak points are yet suffered from the range of work.Owing to the blade shape of aero-engine blisk mostly is free form surface, mistake The electrolytic processing process used is gone to be difficult to reach processing request in machining accuracy, surface quality, it is necessary to blisk is electrolysed Processing technique is for further study.The processing of current single individual vanes mainly uses copy type electrolysis to shape processing technique, and whole The processing of body impeller blade mainly uses numerical control generated Electrolyzed Processing forming technology, but at the big leaf of Machining Free-Form Surfaces or torsion resistance During sheet, machining accuracy is the highest, and present this method is mainly used in the processing of ruled surface integrated impeller blade.In order to improve blisk leaf Sheet Electrolyzed Processing precision, the past also attempts using numerical control electrochemical grinding complex machining process, vibration and the method such as pulse power processing, Improve blade processing precision to a certain extent, but still do not reach precision of blades requirement.
Therefore, on free form surface integrated impeller blade electrochemical machining method, need electrolytic processing process and device are studied With exploitation, improve the machining accuracy of free form surface blade profile further, solve a processing difficult problem for aero-engine blisk.
Summary of the invention
Goal of the invention: the invention aims to solve the deficiencies in the prior art, it is provided that a kind of reasonable in design, workable, Working (machining) efficiency is high, and especially machining accuracy is high, can well realize free form surface integrated impeller blade polish, can meet aviation The shaped device of the free form surface integrated impeller blade electrolysis polish of blisk of engine blade processing required precision;The present invention Another purpose is to provide the processing molding method of integrated impeller blade.
Technical scheme: in order to realize the purpose of the present invention, the technical solution used in the present invention is:
A kind of integrated impeller blade electrolysis polish forming device, it includes five axle four-axle linkage electrolytic machine tools, is arranged on five axles The Shaped Cathode of the blade processing on four-axle linkage electrolytic machine tool, the Intelligent pulse being connected with five axle four-axle linkage electrolytic machine tools Power supply and control system, the electrolyte conveyer device being connected with the Shaped Cathode of blade processing;
Five described axle four-axle linkage electrolytic machine tools include bed piece, and the Y-axis slide unit being arranged on bed piece is arranged on Y-axis on Y-axis slide unit, is arranged on the X-axis slide unit on Y-axis slide unit top, is arranged on the X-axis on X-axis slide unit, is arranged on X The blisk on axle slide unit top, the rotary table being arranged on blisk, the C axle being arranged in rotary table, peace The machine pillar being contained on bed piece, the Z axis being arranged on machine pillar, described Z axis is provided with Z axis column, Z Being provided with A axle on the other end of axle column, described A axle one end is provided with turbine blades in electrochemical polish Shaped Cathode, described X, Y, Z axis are linear axis, and A axle 2 and C axle 6 are gyroaxis, the most any four axle linkages.
The described Shaped Cathode that turbine blades in electrochemical polish Shaped Cathode is a kind of semi-open type structure, it includes connecting rod, and is connected Fluid collection chamber lid that bar is connected and hydrops cavity, one end of described hydrops cavity is provided with front flow guiding plate, upper cover plate, lower cover, It is arranged on the fluid infusion plate below upper cover plate, the shaped electrode being arranged between upper cover plate and lower cover, described hydrops cavity front end Offer main feed liquor drain seam and fluid infusion drain seam;
Wherein electrolyte is input to fluid collection chamber from electrolyte conveyer device by connecting rod and stores, and offers two in fluid collection chamber front end Bar drain is stitched, and one is that main feed liquor drain is stitched, another is that fluid infusion drain is stitched, preferably, and main feed liquor drain seam and benefit The width of liquid drain seam is 0.8~1mm, and it is shaped as the intersection of negative electrode outer margin contour tangent line and fluid collection chamber body front surface, electrolyte Main by major flow seam entrance guiding region, it is made up of front flow guiding plate, upper cover plate, lower cover, the width of guiding region and water conservancy diversion Stitching identical, electrolyte enters the processing gap surrounded by molded component, upper cover plate, lower cover and finished surface through guiding region In;Another part electrolyte enters, by fluid infusion drain seam, the fluid infusion chamber being opened in fluid infusion plate, carries out from top to processing gap Fluid infusion, it forms one together with main electrolyte and stably processes flow field.Preferably, electrolyte enters the import of fluid collection chamber Pressure is more than 0.7MPa, and the electrolyte flow rate of machining area is more than 15m/s.
Described control system includes switch board, and the five-axle numerical control system being arranged in switch board and integrated industrial control computer, Described integrated industrial controls to be provided with Electrolyzed Processing on computer and controls software;
Described intelligent pulse power includes the pulse power and power-supply controller of electric.
Preferably, above-described integrated impeller blade electrolysis polish forming device, described Electrolyzed Processing controls soft Part includes integrated impeller blade Electrolyzed Processing auto-control software and Electrolyzed Processing simulation software;Wherein integrated impeller blade electrolysis adds Work automatic control software package includes master control system and is examined with pressure by motor control, processing electric current Detection & Controling, electrolyte temperature The subsystem surveyed and control composition.Wherein Electrolyzed Processing simulation software is for producing the motion road of passage between the entrance leaf of Shaped Cathode Footpath.
The method that a kind of integrated impeller blade electrolysis polish that the present invention provides shapes, enters passway between leaf including Shaped Cathode The determination in footpath, processing feeding angle and the selection of speed and the course of processing control;
First Electrolyzed Processing Shaped Cathode is arranged on the A gyroaxis of five axle electrolytic machine tools, then whole by after roughing Body impeller is arranged on C gyroaxis, controls the Electrolyzed Processing on computer by integrated industrial and controls molding the moon of Software Create Polar motion path, movement angle and movement velocity, then control the X-axis on five axle electrolytic machine tools, Y-axis, Z axis, and A returns Rotating shaft and C gyroaxis 5-axis movement, make Shaped Cathode enter passage between blisk leaf, arrive predetermined Working position, then root According to feeding angle [alpha]fControlling the feed motion of Shaped Cathode, processing prepares the integrated impeller blade that precision is high.
Preferably, the method that the electrolysis polish of above-described integrated impeller blade shapes, described integrated impeller blade In polish, the feed motion of Shaped Cathode uses two direction feedings, by X, Y-axis feed motion, the feeding angle of composite cathode αf, described feeding angle [alpha]fMeet following condition:
(Ⅰ)αo< αf< αe;(Ⅱ)|θminf|≤45°;(III) min (| θminf|), wherein αo、αeIt is respectively blade root circle The maximum at place and the tangential angle of minimum, θminFor the optimum feeding angle in blisk radial section.
Between leaf after passageway machining, the surplus of polish is mainly distributed on blade tip and the blade root two ends, i.e. big at both ends and small in middle of blade, In general utilize Shaped Cathode processing request allowance uniform, if allowance inequality can affect blade profile as far as possible Leveling effect, thus affect the machining accuracy of profile.The present invention is screened by great many of experiments, uses tilted direction to be fed with beneficially leaf Sheet leaf top and the removing of the big surplus in blade root two ends, add negative electrode in man-hour and first remove the allowance on disleaf top and blade root, be the most just worked into The surplus of mid portion, after processing after a while, the allowance of blade progressively tends to uniform, to blade during process finishing Allowance distribution in profile is relatively uniform, is conducive to improving the machining accuracy of blade, and the electrolysis of the most oblique feeding blade adds Work process is similar to the electrolysis reaming of bellmouth, and feed speed is affected little by end face processing gap, therefore can improve processing Feed speed, thus blade processing efficiency can be improved.
Preferably, the method that the electrolysis polish of above-described integrated impeller blade shapes, described Shaped Cathode 3 Movement velocity is 0.1~0.2mm/min.
The method that the electrolysis polish of above-described integrated impeller blade shapes, the profile of Shaped Cathode and the motion path root of blade According to blade shape, Shaped Cathode shape and machine tool motion coordinate axes collocation form, use blisk Electrolyzed Processing analogue system It is designed, by Shaped Cathode profile is revised in passage between limited blisk leaf, true in conjunction with the size of passage between leaf Determine the motion path of yin shaping up body pole.
Beneficial effect: the integrated impeller blade that the present invention provides is electrolysed polish forming device and processing molding method thereof and existing skill Art is compared and is had the advantage that
1, the integrated impeller blade electrolysis polish forming device that the present invention provides, reasonable in design, machining accuracy is high, very well Realize free form surface integrated impeller blade polish, aero-engine integrated impeller blade requirement on machining accuracy can be met
2, the present invention use semi-open type be electrolysed Shaped Cathode processing unit (plant), reasonable in design, right in Shaped Cathode processing unit (plant) The mobile performance in blade flow field is guided and has been controlled, and makes electrolyte be incorporated into processing gap with certain flow velocity, can meet again Between Shaped Cathode and blade, relative motion needs, and makes the electrolysis forming of complex leaf be achieved.
In the forming surface of Shaped Cathode designs, according to blade profile to the corresponding forming face on Shaped Cathode, by a large amount of real Test perfect, the impact on blade surface machining accuracy of the Shaped Cathode profile can be reduced, improve the machining accuracy of blade.
The movement angle of negative electrode determines with blade root circle according to the shape of blade, optimizes movement angle by great many of experiments, optimizes and reduce The processing gap uneven phenomenon that angle between blade profile normal and direction of feed is formed, improves the machining accuracy of blade.
And screened by great many of experiments, Shaped Cathode motion and machine tool motion are carried out the most effective distribution, the rotation needed for processing Turning and move through the generation of rotary table band movable vane disc spins, blisk also does the linear motion of X and Y-axis simultaneously.Shape the moon Pole is capable of Z axis linear motion and A axle rotary motion under lathe drives, and can realize shaping under the motion of five axles of lathe Negative electrode enters passage between leaf, reaches predetermined Working position, and working (machining) efficiency is high, the integrated impeller blade precision that processing prepares High.
Accompanying drawing explanation
The structural representation of the integrated impeller blade electrolysis polish forming device that Fig. 1 provides for the present invention.
The structure that Fig. 2 is electrolysed the blade processing Shaped Cathode in polish forming device for the integrated impeller blade that the present invention provides is shown It is intended to.
The structure that Fig. 3 is electrolysed the blade processing Shaped Cathode in polish forming device for the integrated impeller blade that the present invention provides is shown It is intended to.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment, it is further elucidated with the present invention, it should be understood that these embodiments are merely to illustrate the present invention Rather than restriction the scope of the present invention, after having read the present invention, those skilled in the art's shape various of equal value to the present invention The amendment of formula all falls within the application claims limited range.
Embodiment 1
As shown in Figure 1 to Figure 3, a kind of integrated impeller blade electrolysis polish forming device, it includes that five axle four-axle linkage electrolysis add Work lathe, the Shaped Cathode of the blade processing being arranged on five axle four-axle linkage electrolytic machine tools, with five axle four-axle linkage Electrolyzed Processing Lathe be connected intelligent pulse power and control system, the electrolyte conveyer device being connected with the Shaped Cathode of blade processing;
Five described axle four-axle linkage electrolytic machine tools include bed piece (1), are arranged on the Y-axis slide unit on bed piece (1) (2), it is arranged on the Y-axis on Y-axis slide unit (2), is arranged on the X-axis slide unit (3) on Y-axis slide unit (2) top, be arranged on X-axis sliding X-axis on platform (3), is arranged on the blisk (4) on X-axis slide unit (3) top, is arranged on the revolution work on blisk (4) Platform (5), the C axle (6) being arranged in rotary table (5), the machine pillar (7) being arranged on bed piece (1), it is arranged on machine Z axis on bed column (7), described Z axis is provided with Z axis column (8), the other end of Z axis column (8) is provided with A axle (9), described A axle (9) one end is provided with turbine blades in electrochemical polish Shaped Cathode (10), and described X, Y, Z axis is linear axis, A axle (9) and C axle (6) are gyroaxis, the most any four axle linkages;
The described Shaped Cathode that turbine blades in electrochemical polish Shaped Cathode (10) is a kind of semi-open type structure, it includes connecting rod (11), The fluid collection chamber lid (12) being connected with connecting rod (11) and hydrops cavity (13), one end of described hydrops cavity (13) is pacified Equipped with front flow guiding plate (14), upper cover plate (15), lower cover (16), it is arranged on the fluid infusion plate (17) of upper cover plate (15) lower section, The shaped electrode (18) being arranged between upper cover plate (15) and lower cover (16), described hydrops cavity (13) front end is offered There are main feed liquor drain seam (19) and fluid infusion drain seam (20);
Described control system includes switch board (21), the five-axle numerical control system (22) being arranged in switch board (21) and one Chemical industry controls computer (23), and described integrated industrial controls to be provided with Electrolyzed Processing on computer (23) and controls software;
Described intelligent pulse power includes the pulse power (24) and power-supply controller of electric (25).
Above-described integrated impeller blade electrolysis polish forming device, described main feed liquor drain seam (19) and fluid infusion drain The width of seam (20) is 0.8~1mm.
Above-described integrated impeller blade electrolysis polish forming device, described Electrolyzed Processing controls software and includes blisk Turbine blades in electrochemical machining auto-control software and Electrolyzed Processing simulation software;Wherein integrated impeller blade Electrolyzed Processing auto-control software Form including master control system with by motor control, processing electric current Detection & Controling, electrolyte temperature with pressure detecting and control Subsystem.
Above-described integrated impeller blade electrolysis polish forming device, electrolyte enters the inlet pressure of hydrops cavity (13) More than 0.7MPa, the electrolyte flow rate of machining area is more than 15m/s.
Embodiment 2
The method that the electrolysis polish of a kind of integrated impeller blade shapes, enters the determination of channel path between leaf including Shaped Cathode, adds Work feeding angle and the selection of speed and the course of processing control;
First electrolysis polish Shaped Cathode (10) is arranged on the A axle (9) of five axle electrolytic machine tools, then by after roughing Integral wheel be arranged on C axle (6), control the Electrolyzed Processing on computer (23) by integrated industrial and control Software Create Motion path, movement angle and the movement velocity of electrolysis polish Shaped Cathode (10), then control five axle electrolytic machine tools On X-axis, Y-axis, Z axis, A axle (9) and C axle (6) 5-axis movement, make electrolysis polish Shaped Cathode (10) enter overall leaf Passage between dish leaf, arrives predetermined Working position, further according to feeding angle [alpha]fControl the feed motion of Shaped Cathode (10), described The movement velocity of Shaped Cathode (10) be 0.1~0.2mm/min, processing prepares the integrated impeller blade that precision is high.
The method that the electrolysis polish of above-described integrated impeller blade shapes, shapes the moon in described integrated impeller blade polish The feed motion of pole (10) uses two direction feedings, by X, Y-axis feed motion, the feeding angle [alpha] of synthesis Shaped Cathode (10)f, Described feeding angle [alpha]fMeet following condition:
(Ⅰ)αo< αf< αe;(Ⅱ)|θminf|≤45°;(III) min (| θminf|), wherein αo、αeIt is respectively blade root circle The maximum at place and the tangential angle of minimum, θminFor the optimum feeding angle in blisk radial section.
The above is only the preferred embodiment of the present invention, it is noted that for those skilled in the art, Without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as the present invention Protection domain.

Claims (1)

1. an integrated impeller blade electrolysis polish forming device, it is characterised in that it includes five axle four-axle linkage electrolysis Machining tool, the Shaped Cathode of the blade processing being arranged on five axle four-axle linkage electrolytic machine tools, with five axle tetrad galvanic electricity Solving intelligent pulse power and control system that machining tool is connected, the electrolyte being connected with the Shaped Cathode of blade processing carries Device (26);
Five described axle four-axle linkage electrolytic machine tools include bed piece (1), and the Y-axis being arranged on bed piece (1) is sliding Platform (2), is arranged on the Y-axis on Y-axis slide unit (2), is arranged on the X-axis slide unit (3) on Y-axis slide unit (2) top, is arranged on X-axis on X-axis slide unit (3), is arranged on the blisk (4) on X-axis slide unit (3) top, is arranged on blisk (4) Rotary table (5), the C axle (6) being arranged in rotary table (5), be arranged on the lathe on bed piece (1) stand Post (7), is arranged on the Z axis on machine pillar (7), and described Z axis is provided with Z axis column (8), Z axis column (8) One end on A axle (9) is installed, described A axle (9) one end is provided with turbine blades in electrochemical polish Shaped Cathode (10), institute The X, Y, Z axis stated is linear axis, and A axle (9) and C axle (6) are gyroaxis, the most any four axle linkages;
The described Shaped Cathode that turbine blades in electrochemical polish Shaped Cathode (10) is a kind of semi-open type structure, it includes connecting rod (11), the fluid collection chamber lid (12) being connected with connecting rod (11) and hydrops cavity (13), described hydrops cavity (13) One end on front flow guiding plate (14), upper cover plate (15), lower cover (16) are installed, be arranged under upper cover plate (15) The fluid infusion plate (17) of side, the shaped electrode (18) being arranged between upper cover plate (15) and lower cover (16), described Hydrops cavity (13) front end offers main feed liquor drain seam (19) and fluid infusion drain seam (20);
Described control system includes switch board (21), the five-axle numerical control system (22) being arranged in switch board (21) Controlling computer (23) with integrated industrial, described integrated industrial controls to be provided with electrolysis on computer (23) and adds Industry control software;
Described intelligent pulse power includes the pulse power (24) and power-supply controller of electric (25);
Described main feed liquor drain seam (19) and the width of fluid infusion drain seam (20) are 0.8~1mm;
Described Electrolyzed Processing controls software and includes that integrated impeller blade Electrolyzed Processing auto-control software is imitated with Electrolyzed Processing True software;Wherein integrated impeller blade Electrolyzed Processing automatic control software package includes master control system and by motor control, processing Current detecting and control, electrolyte temperature and pressure detecting and the subsystem controlling composition.
CN201310590896.9A 2013-11-21 2013-11-21 A kind of integrated impeller blade electrolysis polish forming device and integrated impeller blade thereof shape method Expired - Fee Related CN103624350B (en)

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