CN110605446A - Integral blade disc integrated electrolytic forming method for spatial rotation and translation cooperative motion - Google Patents
Integral blade disc integrated electrolytic forming method for spatial rotation and translation cooperative motion Download PDFInfo
- Publication number
- CN110605446A CN110605446A CN201910800505.9A CN201910800505A CN110605446A CN 110605446 A CN110605446 A CN 110605446A CN 201910800505 A CN201910800505 A CN 201910800505A CN 110605446 A CN110605446 A CN 110605446A
- Authority
- CN
- China
- Prior art keywords
- blade
- blisk
- numerical control
- cathode
- control platform
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention relates to an integrated electrochemical machining method for machining cascade channels and forming blade profiles of a blisk, and belongs to the field of electrochemical machining. The method is characterized in that: the blade grid channel, the blade back profile and the blade basin profile of the blisk can be formed in one-step electrolytic mode, in the machining process, the tool cathode carries out rotating motion and radial translation motion along the optimized track of the central axis, meanwhile, the electrolytic machining machine tool drives a blisk blank workpiece to do micro rotating motion and vertical direction translation motion along the central axis according to a preset angle around the central axis, and the machining of the blade profile of the blisk is completed in one-step electrolytic forming through the spatial compound motion mode of the tool cathode rotating motion, the radial translation motion and the workpiece micro rotating motion and the micro translation motion. The invention breaks the defects of the traditional blisk pre-opening blade grid channel and profile finish machining separation type electrolytic machining, can realize the integrated molding machining of the blade grid channel and the blade profile of the blisk, and is an improvement of the blisk electrolytic machining.
Description
Technical Field
The invention relates to an electrolytic machining method for machining cascade channels and integrally forming blade profiles of a blisk through two-rotation two-translation cooperative motion in space, and belongs to the field of electrolytic machining.
Background
The blisk is used as a core component in an aerospace engine, the thrust-weight ratio and the working efficiency of the aerospace engine are greatly improved, as the strategy of the aerospace strong country comes out, the blisk blade is increasingly distorted, the channel is increasingly narrow, the machining materials widely adopt nickel-based high-temperature alloy, high-temperature titanium aluminum alloy and the like, the blisk blade is also increasingly novel, the technical requirements on machining precision, surface quality and the like are also increasingly strict, and the blisk blade is increasingly difficult to machine.
At present, the electrolytic machining method of the blade profile of the blisk mainly comprises two methods: 1) the electrolytic machining of the blisk is completed through two separated procedures of preprocessing a blade cascade channel and fine machining and forming a blade profile; 2) the blade profile of the blisk is formed through one-time electrolysis in a rotating trepanning mode. By the aid of the separated electrolytic machining method for preprocessing the blade cascade channel and performing blade profile surface machining forming, uniformity of allowance distribution of the blade cascade channel directly influences quality of blade profile surface machining, and respective tool cathodes and tool clamps are required to be designed for preprocessing the blade cascade channel and performing blade profile surface machining, so that the design period is long. The electrochemical machining of the blisk blade profile trepanning is sensitive to the profile of the straight-line blade, the precision is relatively poor when the blade with larger torsion resistance is machined, and the stable electrochemical machining of the discrete blade is difficult to guarantee due to the insufficient flow field form of the blisk with more discrete blade distribution.
The method described in the patent is mainly based on the cascade channel processing and the blade profile integrated forming electrolytic processing of the blisk with the space two-rotation two-translation cooperative motion, and the cascade channel preprocessing and the blade profile fine processing step-by-step electrolytic processing are avoided. At present, a great deal of research is carried out at home and abroad aiming at the blisk blade type electrolytic machining.
U.S. patent R.R. (metal AND APPRATUS FOR FORMING BY ELECTROCHEMICAL MATERIAL REMOVAL, US7462273B2) mentions that the grooving of the cascade channels AND the shaping of the basin AND back of the leaf are carried out with one cathode. And (3) vibrating and feeding the cathode along the shaft during machining, axially grooving the blade grid channel, keeping the cathode stationary after the channel is machined, vibrating and feeding the workpiece circumferentially around the shaft to machine the blade basin, and vibrating and feeding the workpiece circumferentially in the reverse direction after the machining is finished to machine the blade back. The method has the advantages that when the blade profile of the blisk is machined, the cathode does not rotate, the allowance difference of the blisk blade grid channels with larger blade profile torsion degree is not uniform, the adaptability is not high, and although the method uses one tool cathode to complete the electrolytic machining of the blisk, the electrolytic machining of the blisk blade profile is still completed by two separate processes of blade grid channel preprocessing and blade profile finish machining.
In a patent ' space rotation feeding composite workpiece inclined swinging blisk electrolytic machining method ' (Nanjing aerospace university of applicant ' 201410457130.8, Liujiafang Zhongdong Xuzheng zhuangyang of inventor Zhudong Guzhou), the invention relates to a blisk electrolytic machining method for machining a tool space rotation feeding composite workpiece inclined swinging, which can obviously reduce the machining allowance difference of a blisk channel and improve the machining precision of a subsequent blade profile, can obliquely place the workpiece according to different optimized angles aiming at blade profiles with different torsion degrees, and has wide application range of blisk blade profile electrolytic machining.
In the patent of 'a blisk electrolytic machining method' (application number 201811128151.X applicant, China aviation manufacturing technology research institute, inventor, Huang Ming Tao Zhang Ming Qiyuan Fu military Elite), the blisk electrolytic machining method is invented, the blisk electrolytic machining method is designed according to two separation procedures of cascade channel preprocessing and blade profile finish machining, the cascade channel preprocessing and the blade profile finish machining of a blisk blank are realized through the rotating motion and the cathode translation motion of the blisk blank, and the integral molding machining of the cascade channel and the blade profile cannot be realized.
In the patent of 'blisk electrochemical machining tool and method capable of feeding linearly and rotationally in a combined manner' (Nanjing aerospace university, inventor Xuzheng Yangxiang Zhuchen Zhujia dong, Lijia river miscanthus, etc.) the cathode of the tool can perform combined radial feeding motion and rotational motion, the blisk electrochemical machining tool has good adaptability to blades with larger leaf profile torsion resistance, the allowance difference between a leaf basin and a leaf back is more uniform, but the blisk leaf profile electrochemical machining is completed by two separate processes of leaf cascade channel preprocessing and leaf profile finish machining, and the integrated forming machining of the leaf cascade channel and the leaf profile cannot be realized.
Although the existing blisk electrolytic machining device and method can complete final finish machining and forming of blisk blade profiles, the existing blisk electrolytic machining device and method are mostly based on two separate type processes of blade cascade channel preprocessing and blade profile finish machining, and a tool cathode adopts a separate type design according to the blade cascade channel preprocessing and the blade profile finish machining, so that the blisk machining period is prolonged, and the blisk electrolytic machining is influenced.
Disclosure of Invention
The invention aims to provide a device and a method for integrating two procedures of blade cascade channel preprocessing and blade profile surface finishing into a whole, which realize one-time electrolytic forming of the blade cascade channel preprocessing and the blade profile surface finishing and realize the efficient electrolytic processing of the integral blade disc blade profile.
Step 1, clamping a blisk blank workpiece on a workpiece numerical control platform capable of axially rotating and radially translating, clamping a tool cathode on a cathode numerical control platform capable of rotating and radially translating along the axis of the tool cathode, wherein the two numerical control platforms can realize the motion precision of 0.1-degree rotation step length and 0.001m translation step length;
step 2, discretizing the number of the blade control lines according to a standard blade numerical model of the blisk, wherein the kth blade disk1The strip control line corresponds to the kth leaf disc1Design position, blisk k2The strip control line corresponds to the kth leaf disc2Design position, and so on, the k th of the leaf discnThe strip control line corresponds to the kth leaf discn(n 1, 2, 3..) designing a position;
step 3, integrally forming the molded surface of the leaf basin
Step 3-1, calculating the rotation angle of the blisk blank according to a cos (theta) method, defining the rotation angle as a preset angle, starting a workpiece numerical control platform driver to drive a numerical control platform to drive the blisk blank to take the preset angle as a referenceTo be provided withThe rotating step length of 0.1 degree is used for rotating, and a cathode numerical control platform driver is started to drive a numerical control platform to drive a cathode tool to move around the axis of the cathode tool according to the rotating step length of 0.1 degree; the designed molded surface of the leaf basin is changed to obtain the kth of the leaf basin1Selecting kth of basin by comparing with standard blade profile1Designing the kth set of discrete points of position and standard profile leaf basin1The rotation angle corresponding to the minimum error of the strip control line discrete point set is used as the kth blade basin of the workpiece numerical control platform and the cathode numerical control rotary table driver1Actual drive angles for the design positions;
step 3-2, starting a cathode numerical control platform driver to drive a numerical control platform to drive a cathode tool to move along a radial feeding direction by a radial feeding step length of 0.001m, and carrying out radial translation feeding on the cathode tool until the kth of the blade disc2Strip control line position; starting a workpiece numerical control platform driver to drive a numerical control platform to drive a blisk blank by taking a preset angle as a referenceTo be provided withRotating at a rotation step of 0.1 degree, changing the designed blade basin profile to obtain the kth blade basin2Selecting kth of basin by comparing with standard blade profile2Designing the kth set of discrete points of position and standard profile leaf basin2The rotation angle corresponding to the minimum error of the strip control line discrete point set is used as the kth blade basin of the workpiece numerical control platform and the cathode numerical control rotary table driver2Actual drive angles for the design positions; and recording the radial feeding translation motion parameters;
step 3-3, continuously and radially feeding the tool cathode numerical control platform to sequentially obtain the kth of the current blade basin of the bliskn(n ═ 3, 4, 5..) design positions, yielding the current blade basin kthn(n is 3, 4, 5.) the actual driving angle of the rotary motion of all the drivers of the workpiece numerical control platform and the cathode numerical control platform at the designed positions and the translational parameters of the radial translational motion;
step 3-4, dividing the center rotating shaft of the blisk blank into m number of positions based on the number of the blades, defining the rotating angle theta of the blisk blank driver to be 360 degrees/m, rotating the blisk blank driver clockwise by theta degrees, and repeating the step 3-1 to the step 3-3 to electrolytically machine the basin-shaped surfaces of all the blades of the blisk;
step 4, integrally forming the blade back profile
Step 4-1, the tool cathode is started to retreat the original point, a workpiece numerical control platform driver is started to drive a numerical control platform to drive a blisk blank to take a preset angle as a referenceTo be provided withThe rotating step length of 0.1 degree is used for rotating, and a cathode numerical control platform driver is started to drive a numerical control platform to drive a cathode tool to move around the axis of the cathode tool according to the rotating step length of 0.1 degree; the profile of the designed blade back is changed to obtain the kth blade back1Selecting the kth point of the blade back by comparing the discrete point set with the standard blade profile1Designing a set of discrete points at positions and a kth standard profile blade back1The rotation angle corresponding to the minimum error of the strip control line discrete point set is used as the kth blade back of the drivers of the workpiece numerical control platform and the cathode numerical control platform1Actual drive angles for the design positions;
step 4-2, starting a cathode numerical control platform driver to drive a numerical control platform to drive a cathode tool to move along a radial feeding direction by a radial feeding step length of 0.001m, and carrying out radial translation feeding on the cathode tool until the kth of the blade disc2Strip control line position; starting a workpiece numerical control platform driver to drive a numerical control platform to drive a blisk blank by taking a preset angle as a referenceTo be provided withRotating at a rotation step of 0.1 degree, changing the designed blade back profile to obtain the kth blade back profile2Selecting the kth point of the blade back by comparing the discrete point set with the standard blade profile2Designing a set of discrete points at positions and a kth standard profile blade back2The rotation angle corresponding to the minimum error of the strip control line discrete point set is used as the kth blade back of the drivers of the workpiece numerical control platform and the cathode numerical control platform2Actual drive angles for the design positions; and recording the radial feeding translation motion parameters;
step 4-3, continuously and radially feeding the tool cathode numerical control platform to sequentially obtain the kth of the current blade back of the bliskn(n ═ 3, 4, 5..) design positions, which result in the kth position of the current blade backn(n-3, 4, 5.) rotation of all the drivers of the workpiece NC platform and the cathode NC platform for each design positionThe actual driving angle of the motion and the translation parameter of the radial translation motion;
and 4-4, dividing the center rotating shaft of the blisk blank into m number of positions on the basis of the number of the blades, defining the rotating angle theta of the blisk blank driver to be 360 DEG/m, rotating the blisk blank driver anticlockwise by theta degrees, and repeating the steps 4-1 to 4-3 to electrolytically machine the blade back profiles of all the blades of the blisk.
The blisk blank workpiece is clamped on a workpiece numerical control platform capable of axially rotating and translating, the tool cathode is clamped on a tool numerical control platform capable of rotating along the axis of the blisk blank workpiece and radially translating, can realize the spatial compound motion of the rotating motion and the translation motion of the blisk blank and the rotating motion and the translation motion of the tool cathode, can lead the blank workpiece of the blisk to have the dissolution of the side surface and the hub end surface, lead the cascade channel and the blade profile of the blisk to be integrally formed by electrolysis, avoid the separate electrolysis processing of the cascade channel and the blade profile of the blisk, the transition fillet R of the hub profile and the side profile is sensitive, the processing quality of the transition fillet R is good, all the blade basin profiles or the blade back profiles of the blisk are processed by the cathode of the tool in the blisk processing process, then the tool cathode and the blisk blank return to the initial position, and all the blade back profiles or blade basin profiles of the blisk are machined through electrolysis. The electrolytic machining process of the blisk is simplified, and the machining efficiency of the blisk is improved.
The integral blade disc electrolytic forming method of the spatial rotation and translation cooperative motion can adapt to the electrolytic processing of blade disc of blade grid channels with different widths and narrow degrees.
For the blisk with wider blade cascade channels, a blade profile finishing electrolysis process is not required to be added, and the machining of the blade cascade channels and the blade profiles of the blisk is completed through one-step electrolysis forming through optimized rotation angle and translation displacement combination, so that the integrated electrolysis forming of the blade cascade channels and the blade profiles of the blisk is completed.
For the blisk with narrow cascade channels, in the step 3-3, a blade basin profile finishing procedure can be added, after the actual driving angles of the rotary motion and the translational parameters of the radial translational motion of all drivers of the workpiece numerical control platform and the cathode numerical control platform at the current blade basin design position are determined, micro-electrochemical machining parameters are changed, the cathode of the tool is kept still, the blisk blank translational driver is started to drive the blank to perform translational motion along the vertical direction of the tool feeding direction to perform profile electrolysis, and the blisk of the current blade is finished;
in step 4-3, a blade back profile finishing procedure can be added, after the actual driving angles of the rotary motion and the translational parameters of the radial translational motion of all drivers of the workpiece numerical control platform and the cathode numerical control platform at the current blade back design position are determined, micro-electrolytic machining parameters are converted, the cathode of the tool is kept still, the blisk blank translational driver is started to drive the blank to perform translational motion along the direction vertical to the tool feeding direction to perform profile electrolysis, and the blade back of the current blade is finished.
After the circumferential directions of the blade basin and the blade back of the integral blade disk are completely processed, the integral blade disk rotates clockwise and anticlockwise for a certain angle, then the circumferential electrolytic processing of the blade back and the blade basin of the integral blade disk is carried out, a follow-up insulation matching device of a formed blade of the integral blade disk is designed in the processing process, in the step 3-4, when the current blade basin is processed, in order to prevent the secondary stray corrosion to the blade basin of the previous processed blade, an insulation matching device which is designed by an insulation material and is consistent with the profile of the blade basin of the standard blade is adopted, and the insulation matching device is controlled by a driver to be tightly attached to the profile of the blade basin of the processed blade; in step 4-4, when the current blade back is processed, in order to prevent stray corrosion to the previous processed blade basin and the previous blade back, the current processed blade basin is protected by adopting an insulating device, the previous processed blade basin in the clockwise direction and the previous processed blade back in the counterclockwise direction are protected by adopting a mode of coating insulating paper, the profile of the processed blade of the blisk is protected from the influence of the stray corrosion, and the processing quality of the blisk is improved.
Drawings
FIG. 1 is a schematic view of the assembly of the apparatus of the present invention;
FIG. 2 is a schematic view of a cathode assembly for a tool of the present invention;
FIG. 3 is a top view of the cathode assembly of the tool of the present invention;
FIG. 4 is a schematic view of a compliant insulation assembly for a formed blade according to the present invention;
number designation in the figures: 1. blank rotating shaft, 2, workpiece, 3, insulator, 4, insulator connecting block, 5, tool cathode body connecting block, 6, tool cathode rotating shaft, 7 and 12, tool cathode body deflector block, 8, tool cathode body, 9, pulse power supply, 10, tool cathode connecting hole, 11, tool cathode bottom surface profile, 13, tool cathode cone profile processing edge, 14, tool cathode end face, 15, tool cathode end face blade back processing edge, 16, tool cathode end face blade cone processing edge, 17, tool cathode blade back profile processing edge, 18, blade cone profile insulator, 19, blade back profile insulator, 20, insulator guiding block, 21, insulator connecting block, 22, insulator connecting hole.
Detailed Description
The following detailed description of the embodiments of the invention is provided.
The invention relates to a blisk integrated electrolytic forming method with space rotation and translation cooperative motion, which mainly comprises a blisk tool rotating platform, a cathode tool body and a follow-up insulating device.
Referring to fig. 1, the process for realizing the integrated electrolytic forming processing of the blade cascade channel and the blade profile of the blisk mainly comprises the following steps:
the method comprises the following steps: installing an X linear motion platform and a Y linear motion platform on a marble platform of an electrolytic machine tool, installing a Z-direction numerical control platform on a newly installed reference platform, installing a cathode tool body combination (a cathode body, a flow guide device and a connecting device) on a cathode tailstock, and connecting the cathode body of the tool with a power supply negative electrode;
step two: mounting the blisk on the workbench in the first step, and connecting the blisk with the positive pole of a power supply;
step three: and (3) setting a tool, determining an initial processing position, calculating an initial processing gap, starting a follow-up insulator driver, driving an insulator connecting block 21 to move, and returning the insulator 3 into the clamp body.
Step four: starting the blisk blank rotary driver, the translation driver, the tool cathode body rotary driver and the translation driver to enable the blisk blank tool to do rotary motion and translational motion along the vertical direction of the axis 1 according to the central axis 1, and enabling the tool cathode body to do rotary motion and translational motion along the central axis 6.
Step five: and (3) clockwise rotating the blisk blank workpiece 2 by theta (360 DEG)/m degrees according to the central axis 1, starting a follow-up insulator driver to drive the insulator connecting block 20, tightly attaching the blisk profile insulator 18 to the first processed blisk profile, protecting the adjacent blade profiles by adopting coated insulating paper, repeating the step four, processing the second blade basin profile, and circularly repeating the step five until all the blade basin profiles are processed by electrolytic processing.
Step six: the cathode tool body 8 is retreated to the initial position, the blisk blank workpiece 2 rotates anticlockwise according to the central axis 1, the servo insulator driver is started, the servo insulator 3 is retreated into the clamp body, the blisk blank rotating driver, the translation driver, the tool cathode body rotating driver and the translation driver are started, the blisk blank workpiece 2 makes rotating motion and translation motion along the direction vertical to the axis 1 according to the central axis 1, the tool cathode body 3 makes rotating motion and translation motion along the central axis 6, firstly, the machining edge 15 of the end face of the blisk back is contacted with the workpiece, the machining edge 17 of the profile of the blade back of the tool is contacted with the workpiece 2 to generate electrochemical dissolution along with the radial feeding of the tool cathode body along the central axis 6, the steps are repeated until the blade back of a first blade is machined, the tool cathode body 8 is kept in a static state, and the blisk blank 2 makes translation motion along the direction vertical to the axis 1, and finishing the profile of the blade back of the first blade.
Step seven: and (3) starting a follow-up insulator driver according to the anticlockwise rotation theta of the central axis 1, driving an insulator connecting block 21 to move, tightly attaching the blade back profile insulator 19 to the first blade back profile, protecting the adjacent blade profiles by adopting coated insulating paper, repeating the step four, processing the second blade back profile, and circularly repeating the step six until all the blade back profiles are processed by electrolytic processing.
Claims (4)
1. The integral electrolytic forming method of the blisk with the cooperative motion of spatial rotation and translation is characterized by comprising the following processes of firstly processing all basin profiles or blade back profiles of the blisk, then retreating the tool cathode and the blisk blank to the initial positions, then electrolytically processing all the back profiles or the blade basin profiles of the blisk, realizing preprocessing of a cascade channel and one-time electrolytic forming of the blade profile finish machining, and the method is characterized by comprising the following steps of:
step 1, clamping a blisk blank workpiece on a workpiece numerical control platform capable of axially rotating and radially translating, clamping a tool cathode on a cathode numerical control platform capable of rotating and radially translating along the axis of the tool cathode, wherein the two numerical control platforms can realize the motion precision of 0.1-degree rotation step length and 0.001m translation step length;
step 2, discretizing the number of the blade control lines according to a standard blade numerical model of the blisk, wherein the kth blade disk1The strip control line corresponds to the kth leaf disc1Design position, blisk k2The strip control line corresponds to the kth leaf disc2Design position, and so on, the k th of the leaf discnThe strip control line corresponds to the kth leaf discnDesign position, n 1, 2, 3.;
step 3, integrally forming the molded surface of the leaf basin
Step 3-1, calculating the rotation angle of the blisk blank according to a cos (theta) method, and defining the rotation angle as a preset angleStarting a workpiece numerical control platform driver to drive a numerical control platform to drive a blisk blank by taking a preset angle as a referenceTo be provided withThe rotating step length of 0.1 degree is used for rotating, and a cathode numerical control platform driver is started to drive a numerical control platform to drive a cathode tool to move around the axis of the cathode tool according to the rotating step length of 0.1 degree; the designed molded surface of the leaf basin is changed to obtain the kth of the leaf basin1Selecting kth of basin by comparing with standard blade profile1Designing the kth set of discrete points of position and standard profile leaf basin1The rotation angle corresponding to the minimum error of the strip control line discrete point set is used as the kth blade basin of the workpiece numerical control platform and the cathode numerical control rotary table driver1Actual drive angles for the design positions;
step 3-2, starting a cathode numerical control platform driver to drive a numerical control platform to drive a cathode tool to move along a radial feeding direction by a radial feeding step length of 0.001m, and carrying out radial translation feeding on the cathode tool until the kth of the blade disc2Strip control line position; starting a workpiece numerical control platform driver to drive a numerical control platform to drive a blisk blank by taking a preset angle as a referenceTo be provided withRotating at a rotation step of 0.1 degree, changing the designed blade basin profile to obtain the kth blade basin2Selecting kth of basin by comparing with standard blade profile2Designing the kth set of discrete points of position and standard profile leaf basin2The rotation angle corresponding to the minimum error of the strip control line discrete point set is used as the kth blade basin of the workpiece numerical control platform and the cathode numerical control rotary table driver2Actual drive angles for the design positions; and recording the radial feeding translation motion parameters;
step 3-3, continuously and radially feeding the tool cathode numerical control platform to sequentially obtain the kth of the current blade basin of the blisknObtaining the kth of the current blade basin at a design position, wherein n is 3, 4 and 5nThe design position n is 3, 4 and 5. the actual driving angle of the rotary motion of all drivers of the workpiece numerical control platform and the cathode numerical control platform and the translation parameter of the radial translation motion;
step 3-4, dividing the center rotating shaft of the blisk blank into m number of positions based on the number of the blades, defining the rotating angle theta of the blisk blank driver to be 360 degrees/m, rotating the blisk blank driver clockwise by theta degrees, and repeating the step 3-1 to the step 3-3 to electrolytically machine the basin-shaped surfaces of all the blades of the blisk;
step 4, integrally forming the blade back profile
Step 4-1, the tool cathode is started to retreat the original point, a workpiece numerical control platform driver is started to drive a numerical control platform to drive a blisk blank to take a preset angle as a referenceTo be provided withThe rotating step length of 0.1 degree is used for rotating, and a cathode numerical control platform driver is started to drive a numerical control platform to drive a cathode tool to move around the axis of the cathode tool according to the rotating step length of 0.1 degree; the profile of the designed blade back is changed to obtain the kth blade back1Selecting the kth point of the blade back by comparing the discrete point set with the standard blade profile1Designing a set of discrete points at positions and a kth standard profile blade back1The rotation angle corresponding to the minimum error of the strip control line discrete point set is used as the kth blade back of the drivers of the workpiece numerical control platform and the cathode numerical control platform1Actual drive angles for the design positions;
step 4-2, starting a cathode numerical control platform driver to drive a numerical control platform to drive a cathode tool to move along a radial feeding direction by a radial feeding step length of 0.001m, and carrying out radial translation feeding on the cathode tool until the kth of the blade disc2Strip control line position; starting a workpiece numerical control platform driver to drive a numerical control platform to drive a blisk blank by taking a preset angle as a referenceTo be provided withRotating at a rotation step of 0.1 degree, changing the designed blade back profile to obtain the kth blade back profile2Selecting the kth point of the blade back by comparing the discrete point set with the standard blade profile2Designing a set of discrete points at positions and a kth standard profile blade back2The rotation angle corresponding to the minimum error of the strip control line discrete point set is used as the kth blade back of the drivers of the workpiece numerical control platform and the cathode numerical control platform2Actual drive angles for the design positions; and recording the radial feeding translation motion parameters;
step 4-3, continuously and radially feeding the tool cathode numerical control platform to sequentially obtain the kth of the current blade back of the blisknObtaining the kth position of the current blade back by using a design position n, wherein n is 3, 4 and 5nA design positionSetting n to be 3, 4 and 5.. the actual driving angle of the rotary motion of all drivers of the workpiece numerical control platform and the cathode numerical control platform and the translation parameter of the radial translation motion;
and 4-4, dividing the center rotating shaft of the blisk blank into m number of positions on the basis of the number of the blades, defining the rotating angle theta of the blisk blank driver to be 360 DEG/m, rotating the blisk blank driver anticlockwise by theta degrees, and repeating the steps 4-1 to 4-3 to electrolytically machine the blade back profiles of all the blades of the blisk.
2. The integral electrolytic forming method of the blisk with the cooperative motion of spatial rotation and translation as claimed in claim 1, wherein:
the step 3-3 further comprises the following steps: after the actual driving angles of the rotary motion and the translational parameters of the radial translational motion of all drivers of the workpiece numerical control platform and the cathode numerical control platform at the current blade basin design position are determined, micro-electrolytic machining parameters are converted, the cathode of the tool is kept still, the blisk blank translational driver is started to drive the blank to perform translational motion along the direction vertical to the tool feeding direction for profile electrolysis, and the blade basin of the current blade is finely repaired;
the step 4-3 further comprises the following steps: after the actual driving angles of the rotary motion and the translational parameters of the radial translational motion of all drivers of the workpiece numerical control platform and the cathode numerical control platform at the current blade back design position are determined, micro-electrolytic machining parameters are converted, the cathode of the tool is kept still, the blisk blank translational driver is started to drive the blank to perform translational motion along the direction vertical to the tool feeding direction to perform profile electrolysis, and the blade back of the current blade is finely repaired.
3. The integral electrolytic forming method of the blisk with the cooperative motion of spatial rotation and translation as claimed in claim 1, wherein:
the tool cathode firstly processes all the blade basin molded surfaces or blade back molded surfaces of the blisk, then the tool cathode and the blisk blank return to the initial position, and then all the blade back molded surfaces or blade basin molded surfaces of the blisk are processed through electrolysis.
4. The integral electrolytic forming method of the blisk with the cooperative motion of spatial rotation and translation as claimed in claim 1, wherein:
in the step 3-4, when the current blade basin is processed, in order to prevent the secondary stray corrosion of the previous processed blade basin, an insulation matching device which is designed by insulation materials and has the same profile with the standard blade basin is adopted, and the insulation matching device is controlled by a driver to be tightly attached to the profile of the blade basin of the processed blade;
in step 4-4, when the blade back of the current blade is processed, in order to prevent stray corrosion to the blade basin and the blade back of the previous processed blade, the blade basin of the current processed blade is protected by adopting an insulating device, and the blade basin of the previous processed blade in the clockwise direction and the blade back of the previous processed blade in the anticlockwise direction are protected by adopting a mode of coating insulating paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910800505.9A CN110605446B (en) | 2019-08-27 | 2019-08-27 | Integral blade disc integrated electrolytic forming method for spatial rotation and translation cooperative motion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910800505.9A CN110605446B (en) | 2019-08-27 | 2019-08-27 | Integral blade disc integrated electrolytic forming method for spatial rotation and translation cooperative motion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110605446A true CN110605446A (en) | 2019-12-24 |
| CN110605446B CN110605446B (en) | 2020-10-20 |
Family
ID=68890636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910800505.9A Active CN110605446B (en) | 2019-08-27 | 2019-08-27 | Integral blade disc integrated electrolytic forming method for spatial rotation and translation cooperative motion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110605446B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114682863A (en) * | 2022-03-25 | 2022-07-01 | 南京航空航天大学 | Double-sided combined double-cathode and segmented electricity-control blisk electrolytic machining method |
| CN114888377A (en) * | 2022-05-12 | 2022-08-12 | 南京航空航天大学 | Precise electrolytic machining method for integral component with odd-even series blades alternately protected |
| CN114932273A (en) * | 2022-05-09 | 2022-08-23 | 南京航空航天大学 | Dynamic deformation electrolytic machining device and method for flexible electrode of multi-blade cascade of integral component |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040163946A1 (en) * | 2000-02-17 | 2004-08-26 | Applied Materials, Inc. | Pad assembly for electrochemical mechanical processing |
| CN103028794A (en) * | 2012-12-06 | 2013-04-10 | 南京航空航天大学 | Whole blade disk electrolysis machining method and device with cathode feeding in variable-amplitude multi-way reciprocating way |
| CN106513883A (en) * | 2016-11-29 | 2017-03-22 | 沈阳黎明航空发动机(集团)有限责任公司 | Blade profile precision electrolytic molding electrode and processing method |
| CN109663997A (en) * | 2018-12-17 | 2019-04-23 | 中国航发动力股份有限公司 | A kind of processing method of the electrolysis pre-profiling with Complex Surface Part |
| CN109693007A (en) * | 2018-12-17 | 2019-04-30 | 中国航发动力股份有限公司 | A kind of design optimization method of integral blade disk electrolysis pre-profiling machining locus parameter |
-
2019
- 2019-08-27 CN CN201910800505.9A patent/CN110605446B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040163946A1 (en) * | 2000-02-17 | 2004-08-26 | Applied Materials, Inc. | Pad assembly for electrochemical mechanical processing |
| CN103028794A (en) * | 2012-12-06 | 2013-04-10 | 南京航空航天大学 | Whole blade disk electrolysis machining method and device with cathode feeding in variable-amplitude multi-way reciprocating way |
| CN106513883A (en) * | 2016-11-29 | 2017-03-22 | 沈阳黎明航空发动机(集团)有限责任公司 | Blade profile precision electrolytic molding electrode and processing method |
| CN109663997A (en) * | 2018-12-17 | 2019-04-23 | 中国航发动力股份有限公司 | A kind of processing method of the electrolysis pre-profiling with Complex Surface Part |
| CN109693007A (en) * | 2018-12-17 | 2019-04-30 | 中国航发动力股份有限公司 | A kind of design optimization method of integral blade disk electrolysis pre-profiling machining locus parameter |
Non-Patent Citations (1)
| Title |
|---|
| 孙伦业等: "基于叶栅通道可加工性分析的整体叶盘径向电解加工阴极设计及实验 ", 《中国机械工程》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114682863A (en) * | 2022-03-25 | 2022-07-01 | 南京航空航天大学 | Double-sided combined double-cathode and segmented electricity-control blisk electrolytic machining method |
| CN114682863B (en) * | 2022-03-25 | 2023-09-29 | 南京航空航天大学 | Electrolytic machining method for double-sided combined double-cathode and sectional power control blisk |
| CN114932273A (en) * | 2022-05-09 | 2022-08-23 | 南京航空航天大学 | Dynamic deformation electrolytic machining device and method for flexible electrode of multi-blade cascade of integral component |
| CN114932273B (en) * | 2022-05-09 | 2023-08-01 | 南京航空航天大学 | Flexible electrode dynamic deformation electrolytic machining device and method for multi-blade grid of integral component |
| CN114888377A (en) * | 2022-05-12 | 2022-08-12 | 南京航空航天大学 | Precise electrolytic machining method for integral component with odd-even series blades alternately protected |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110605446B (en) | 2020-10-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110605446B (en) | Integral blade disc integrated electrolytic forming method for spatial rotation and translation cooperative motion | |
| CN110935968B (en) | Integral electrolytic machining method and electrolytic tool for blisk | |
| CN108380989B (en) | Processing method and equipment for aero-engine blisk | |
| CN102794516B (en) | Blisk blade profile subtle electrochemical machining electrode and machining method | |
| US7204926B2 (en) | Tandem blisk electrochemical machining | |
| CN104690517A (en) | Blisk manufacturing method based on 3D (three-dimensional) printing and electric spark finishing | |
| CN105855650B (en) | Double tool catholyte milling system of processing and processing complex thin-wall method | |
| CN109158721B (en) | Blisk electrolytic machining method | |
| CN111375850B (en) | Multi-station synchronous precise electrolytic forming processing device and method for involute internal spline | |
| CN102873416B (en) | Electrode and machining method for electrolytic grooving of blisks | |
| CN104275534A (en) | Electrolytic machining method for blisk through oblique swinging mode of spatial swivel feeding composite workpiece | |
| CN104259604A (en) | Complex surface numerical control efficient electrolytic machining tool | |
| CN111014851B (en) | EDM-based method for processing rubber openings with multiple composite angles | |
| CN112719776A (en) | Method for processing and repairing surface of rotor shaft neck after nickel plating | |
| CN109500823B (en) | Robot-based bowl-shaped titanium alloy casting oxide layer removing process | |
| CN110142472B (en) | Method for machining large-distortion blade disc by cathode electrolysis of variable-section inner cavity tool | |
| JPS62130298A (en) | Electrochemical processing method | |
| CN113618176B (en) | Electromagnetic control type blisk electrolytic machining device and method | |
| CN109746534A (en) | The leaf disk-like accessory system of processing and method combined based on arc discharge and milling | |
| CN114932273B (en) | Flexible electrode dynamic deformation electrolytic machining device and method for multi-blade grid of integral component | |
| CN220373007U (en) | Automatic rotatory centre gripping frock of PDC processing | |
| CN213410695U (en) | Insulating tube electrode for electrolytic milling | |
| CN116551086A (en) | Electrolytic machining device and method for multi-layer progressive composite cathode rotary sleeve material of blisk | |
| CN114714092B (en) | Reverse processing method for injection mold part | |
| CN115194502B (en) | Processing method and device for pipe joint of asymmetric titanium alloy die forging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |