CN114871481B - Five-axis numerical control milling method for blisk - Google Patents
Five-axis numerical control milling method for blisk Download PDFInfo
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- CN114871481B CN114871481B CN202210640479.XA CN202210640479A CN114871481B CN 114871481 B CN114871481 B CN 114871481B CN 202210640479 A CN202210640479 A CN 202210640479A CN 114871481 B CN114871481 B CN 114871481B
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- 238000003801 milling Methods 0.000 title claims abstract description 201
- 238000005520 cutting process Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 17
- 230000003746 surface roughness Effects 0.000 claims description 6
- 238000003754 machining Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 8
- 238000005299 abrasion Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 238000011284 combination treatment Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/28—Grooving workpieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Abstract
The application provides a five-axis numerical control milling method of a blisk, which belongs to the technical field of blisk processing and comprises the following steps: the middle position is taken as a boundary to be divided into an upper exhaust end flow passage area, a lower exhaust end flow passage area, an upper air inlet end flow passage area and a lower air inlet end flow passage area; designing a layer milling cutter rail of each region; combining a layer milling cutter rail of an upper runner region of an exhaust end and a layer milling cutter rail of a lower runner region of the exhaust end according to a certain proportion, taking the middle position of a slotting region as a lower cutter point, and taking a negative angle of a cutter, firstly milling one layer in the upward runner direction, and then milling one layer in the downward runner direction, so that slotting and milling of the exhaust end are completed in a reciprocating manner; and combining the layer milling cutter rail of the upper flow passage area of the air inlet end and the layer milling cutter rail of the lower flow passage area of the air inlet end according to a certain proportion, and finishing slotting and milling of the air inlet end in the same step as slotting and milling of the air outlet end. The surface allowance of the blade profile is uniform, and the cutter shaft vector milling is not required to be selected for multiple times.
Description
Technical Field
The application relates to the technical field of machining of blisks, in particular to a five-axis numerical control milling method of a blisk.
Background
The integral vane ring is a key part of a novel integral structure adopted by an advanced aeroengine and is an important component of the aeroengine. Compared with the traditional vane ring parts, the integral vane ring has light weight, good reliability and long service life, and is widely adopted in high-pressure compressor rectifiers of advanced turbofan engines. Because the whole blade ring is a key aviation part which is served under extreme environmental conditions (high temperature, high pressure and strong impact), the high-strength heat-resistant material is adopted, the blade shape is complex, the flow passage space is narrow, the machining cutter is difficult to reach the machining surface, the machining accessibility is poor, the problems of cutter connection and machining flutter are serious, the machining efficiency is low, the cutter cost is high, the blade precision and the surface quality are difficult to guarantee, and the machining difficulty is extremely high.
The domestic blisk manufacturing technology mainly adopts a composite manufacturing process, namely, a runner among blades is subjected to fixed-axis rough cutting to remove large allowance, and then rough milling and finish milling of the blades are carried out, and the processing technology has the following defects:
1) During rough machining, an end mill is adopted for fixed shaft rough cutting, and as gaps among blades of the whole blade ring are smaller, the blades are twisted, the size of the cutter is limited, so that the allowance at the blade profile switching R is unevenly removed, and the residual is larger; the process requirements of the allowance of 0.4-0.6mm are not met; because the blade profile is a curved surface with a relatively twisted shape, the fixed-axis milling of the end mill cannot be completely processed according to the curvature of the blade profile, the accessibility of the cutter is poor, the surface luminosity of the blade profile is poor, and the roughness cannot meet the requirement;
2) The blades are of a twisted molded surface, the blades are thin, the rigidity of the blades is poor, an end mill is adopted for fixed shaft milling to remove large allowance, the cutting force acting on the molded surface of the blade body is too large, deformation and trembling of parts are easily caused, rough milling marks cannot be completely removed by semi-finish milling, and the surface luminosity of the parts is poor;
3) The residual quantity is unevenly distributed, the residual quantity of the transition fillet at the leaf basin is too large, so that the half finish milling cutting quantity is too large, the cutter is full-edge cutting, and the service life is reduced; the stress distribution of the parts is uneven, the subsequent stress relief heat treatment process is affected, the stress relief of the parts is incomplete, the deformation of the parts is increased, and the difficulty is increased for subsequent machining.
Thus, conventional machining methods have been difficult to work with and new machining processes have to be explored.
Disclosure of Invention
In view of the above, the embodiment of the application provides a five-axis numerical control milling method for an integral vane ring, which adopts a milling mode of facing downward cutter cutting and five-axis layer milling slotting and adopts a step taper ball end milling cutter, at least partially solves the defects of the prior art process method, and ensures that the leaf type allowance is uniform after rough milling slotting.
The embodiment of the application provides a five-axis numerical control milling method of a blisk, which comprises the following steps:
dividing an exhaust end slotting region and an intake end slotting region: the middle is taken as a boundary to be divided into an upper flow passage area at the exhaust end, a lower flow passage area at the exhaust end, an upper flow passage area at the air inlet end and a lower flow passage area at the air inlet end;
designing a layer milling cutter rail of each area: milling in the upward flow channel direction by taking the middle of the exhaust end as a lower cutter point, and carrying out layer milling cutter rail slotting and exhaust end upper flow channel region rough materials; milling in the direction of a lower flow channel by taking the middle of the exhaust end as a lower cutter point, and carrying out milling in the region of the lower flow channel of the slotted exhaust end of the layer milling cutter rail; milling in the upward flow channel direction by taking the middle of the air inlet end as a lower cutter point, and carrying out milling on the rough material in the upper flow channel area of the grooved air inlet end of the layer milling cutter rail; milling in the direction of a lower flow channel by taking the middle of the air inlet end as a lower cutter point, and carrying out milling on the rough material in the lower flow channel area of the air inlet end of the slotting of the layer milling cutter rail; the tool in each region being at a negative angle relative to the normal to the surface being cut;
milling a slotting exhaust end for a downward cutter and a five-axis layer: combining the layer milling cutter rail of the upper flow passage area of the exhaust end and the layer milling cutter rail of the lower flow passage area of the exhaust end according to a certain proportion, taking one side, close to the leaf basin or the leaf back, of the slotting area as a lower cutter point, wherein a cutter is in a negative angle relative to the normal direction of a cut surface, firstly milling one layer in the upper flow passage direction, and then milling one layer in the lower flow passage direction, and reciprocating until slotting and milling of the exhaust end are finished;
slotting air inlet ends of a downward cutter and a five-axis layer mill: and (3) combining the layer milling cutter rail of the upper flow passage area of the air inlet end and the layer milling cutter rail of the lower flow passage area of the air inlet end according to a certain proportion, taking one side, close to the leaf basin or the leaf back, of the slotting area as a lower cutter point, wherein a cutter is in a negative angle relative to the normal direction of the surface to be cut, firstly milling one layer in the upper flow passage direction, and then milling one layer in the lower flow passage direction, and repeating the steps until slotting and milling of the air inlet end are finished.
According to a specific implementation manner of the embodiment of the present application, after the step of milling the slotting exhaust end on the pair of downstream knives and the five-axis layer, the method further includes:
semi-finish milling of the exhaust end: and (3) adopting a back-shaped cutter rail for layered milling, and carrying out semi-finish milling on a leaf basin, a leaf back and an upper runner and a lower runner at the exhaust end, wherein the milling directions of the cutter rails are as follows in sequence: an upper exhaust runner vane back side, an upper exhaust runner vane bowl side, a lower exhaust runner vane back side and an upper exhaust runner vane back side.
According to a specific implementation manner of the embodiment of the application, after the step of milling the slotting air inlet end on the pair of lower cutters and the five-axis layer, the method further comprises the following steps:
half finish milling of air inlet end: and (3) adopting a back-shaped cutter rail for layered milling, and carrying out semi-finish milling on a leaf basin, a leaf back and an upper runner and a lower runner at the air inlet end, wherein the milling directions of the cutter rails are as follows in sequence: the air inlet end upper runner blade back side, the air inlet end upper runner blade basin side, the air inlet end lower runner blade back side and the air inlet end upper runner blade back side.
According to a specific implementation manner of the embodiment of the application, the cutting parameters are as follows: the cutting depth of each layer is 0.6mm-1.0mm in the longitudinal direction, the transverse step distance is 3mm-5mm, the feeding speed of each tooth of the cutter is 0.08mm-0.1mm, and the cutting speed is 40m/min-60m/min.
According to a specific implementation of the embodiment of the application, the tool makes a negative angle with respect to the normal direction of the surface to be cut, the degree of the negative angle not exceeding minus 20 degrees.
According to a specific implementation mode of the embodiment of the application, the surface roughness range of the grooved blade profile is Ra1.0-Ra1.6.
According to a specific implementation mode of the embodiment of the application, the cutter is a step taper ball head cutter.
According to one specific implementation of an embodiment of the present application, a five-axis milling machine is used as LIECHTI g-mill 1150.
Advantageous effects
According to the five-axis numerical control milling method for the blisk, a counter-type lower cutter cutting slotting method is adopted, the limitation of an upper runner and a lower runner is avoided, the middle part of a blade form is used as a feed point, cutting is carried out by feeding the two sides of the upper runner and the lower runner respectively, a milling cutter always presents a negative angle relative to the normal direction of a surface to be cut, namely a 'pushing' processing mode, a milling cutter is ensured to have a proper forward inclination angle, the cutting force of all contact points of a part is not obviously changed, meanwhile, the overhanging length of the cutter is reduced, the rigidity of the cutter is kept, and the abrasion consumption of the cutter is reduced.
The machining strategy of milling and slotting of the five-axis layers is selected, milling is carried out along the curvature change of the blade profile by utilizing a five-axis linkage machine tool, the blade profile is ensured to leave uniform machining allowance, and the problem that the residual of the transfer R of the milling root of the fixed axis is overlarge and the vector milling of the cutter shaft is required to be adjusted in multiple divided areas is avoided. And a five-axis milling strategy is selected, so that no redundant empty tool path exists, the material removal rate is ensured, the surface roughness of the grooved blade profile can reach Ra1.0-Ra1.6, and the roughness requirement of the subsequent corrosion inspection is met.
A step taper ball head cutter is selected, so that the rigidity of the cutter is enhanced; proper milling parameters are selected to ensure the surface machining quality of the part, reduce the abrasion consumption of the cutter and prolong the service life of the cutter.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a diagram of overall She Huanjie patterning, according to an embodiment of the application;
FIG. 2 is a schematic view of a woolen body to be removed between two adjacent blades according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an exhaust end layered milling upper flow path tool path according to one embodiment of the application;
FIG. 4 is a schematic diagram of an exhaust end layered milling lower flow path tool path according to one embodiment of the application;
FIG. 5 is a schematic illustration of the removal of exhaust end layers by milling according to an embodiment of the present application;
FIG. 6 is a schematic view of an exhaust end semi-finishing milling cutter according to one embodiment of the present application;
FIG. 7 is a schematic view of an air inlet end layered milling upper flow path tool path according to an embodiment of the application;
FIG. 8 is a schematic view of an inlet end layered milling lower flow path tool path according to an embodiment of the application;
fig. 9 is a schematic illustration of a layered milling removal of an air inlet according to an embodiment of the present application.
In the figure: 1. an upper flow channel side; 2. a lower flow channel side; 3. leaf basin side; 4. leaf dorsal side; 5. and (3) a blade.
Detailed Description
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Other advantages and effects of the present application will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present application with reference to specific examples. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. The application may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present application. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It is noted that various aspects of the embodiments are described below within the scope of the following claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present disclosure, one skilled in the art will appreciate that one aspect described herein may be implemented independently of any other aspect, and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. In addition, such apparatus may be implemented and/or such methods practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
It should also be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present application by way of illustration, and only the components related to the present application are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided in order to provide a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.
The embodiment of the application provides a five-axis numerical control milling method of a blisk, which comprises the following steps:
s101, dividing an exhaust end slotting region and an air inlet end slotting region: the exhaust end upper flow passage area, the exhaust end lower flow passage area, the air inlet end upper flow passage area and the air inlet end lower flow passage area are divided by taking the middle as a boundary.
S102, designing a layer milling cutter rail of each region: milling in the upward flow channel direction by taking the middle of the exhaust end as a lower cutter point, and carrying out layer milling cutter rail slotting and exhaust end upper flow channel region rough materials; milling in the direction of a lower flow channel by taking the middle of the exhaust end as a lower cutter point, and carrying out milling in the region of the lower flow channel of the slotted exhaust end of the layer milling cutter rail; milling in the upward flow channel direction by taking the middle of the air inlet end as a lower cutter point, and carrying out milling on the rough material in the upper flow channel area of the grooved air inlet end of the layer milling cutter rail; milling in the direction of a lower flow channel by taking the middle of the air inlet end as a lower cutter point, and carrying out milling on the rough material in the lower flow channel area of the air inlet end of the slotting of the layer milling cutter rail; the tool is at a negative angle relative to the normal to the surface being cut in each region.
S103, milling a slotting exhaust end to a downward cutter and a five-axis layer: and (3) combining the layer milling cutter rail of the upper flow passage area of the exhaust end and the layer milling cutter rail of the lower flow passage area of the exhaust end according to a certain proportion, taking one side, close to the leaf basin or the leaf back, of the slotting area as a lower cutter point, wherein a cutter is in a negative angle relative to the normal direction of the surface to be cut, firstly milling one layer in the upper flow passage direction, and then milling one layer in the lower flow passage direction, and repeating the steps until slotting and milling of the exhaust end are finished. In general, the degree of the negative angle is not more than minus 20 degrees, and the design can be carried out according to the actual milling condition.
S104, milling a slotting air inlet end to a cutter and a five-axis layer: and (3) combining the layer milling cutter rail of the upper flow passage area of the air inlet end and the layer milling cutter rail of the lower flow passage area of the air inlet end according to a certain proportion, taking one side, close to the leaf basin or the leaf back, of the slotting area as a lower cutter point, wherein a cutter is in a negative angle relative to the normal direction of the surface to be cut, firstly milling one layer in the upper flow passage direction, and then milling one layer in the lower flow passage direction, and repeating the steps until slotting and milling of the air inlet end are finished.
In one embodiment, after step S103, the method further includes:
semi-finish milling of the exhaust end: and (3) adopting a back-shaped cutter rail for layered milling, and carrying out semi-finish milling on a leaf basin, a leaf back and an upper runner and a lower runner at the exhaust end, wherein the milling directions of the cutter rails are as follows in sequence: an upper exhaust runner vane back side, an upper exhaust runner vane bowl side, a lower exhaust runner vane back side and an upper exhaust runner vane back side.
In another embodiment, after step S104, the method further includes:
half finish milling of air inlet end: and (3) adopting a back-shaped cutter rail for layered milling, and carrying out semi-finish milling on a leaf basin, a leaf back and an upper runner and a lower runner at the air inlet end, wherein the milling directions of the cutter rails are as follows in sequence: the air inlet end upper runner blade back side, the air inlet end upper runner blade basin side, the air inlet end lower runner blade back side and the air inlet end upper runner blade back side.
The method of the present application will be described in detail below with reference to a specific closed type blisk, in which a closed type blisk of a certain type (shown in fig. 1) is processed with a material TC11, a maximum diameter Φ728mm, a minimum diameter Φ474mm, a number of blades 92, a blade length of about 103mm, a minimum gap between two adjacent blades 9.26mm, and a changeover R between the blades and the upper and lower runners of 2.5 +0.5 mm, the blank is a die forging, and the five-axis milling machine used is LIECHTIg-mill 1150. In the embodiment, the cutter specification is phi 10-phi 6R4 CON1.5 degrees, the cutter is 4 cutting edges, and the step taper ball end milling cutter with the length of 100mm can enhance the rigidity of the cutter. Cutting parameters: the cutting depth of each layer in the longitudinal direction (i.e. the direction of the air inlet and outlet edges) is 0.6-1mm, the step distance in the transverse direction (i.e. the direction of the back of the leaves of the leaf basin) is 3-5mm, the feeding of each tooth of the cutter is 0.08-0.1mm, and the cutting speed is 40-60m/min. The surface processing quality of the part can be ensured by selecting proper milling parameters, and the cutter is slowed downWear and tear consumption, extension cutter life.
The specific processing method comprises the following steps:
s201, dividing the exhaust end grooving area into two parts: as shown in fig. 2, the exhaust port intermediate position L1 is defined as a boundary, and is divided into an exhaust port upper flow path region and an exhaust port lower flow path region.
S202, designing a layer milling cutter rail of an upper flow passage area of an exhaust end, milling in the upward flow passage direction by taking an L2 position as a lower cutter point, milling a step taper ball cutter at a negative angle, and grooving the rough material of the upper flow passage area of the exhaust end of the layer milling cutter rail by adopting a certain step distance in the longitudinal direction, wherein a cutter path schematic diagram is shown in figure 3.
S203, designing a layer milling cutter rail of the lower flow passage area of the exhaust end, milling the lower flow passage direction by taking the L2 position as a lower cutter point, milling a step taper ball cutter at a negative angle, and grooving the rough material of the lower flow passage area of the exhaust end of the layer milling cutter rail by adopting a certain step distance in the longitudinal direction, wherein a cutter path schematic diagram is shown in fig. 4.
S204, combining an upper runner program and a lower runner program, and milling a slotting exhaust end for a downward cutter and a five-axis layer: and (3) carrying out combination treatment on the layer milling cutter rails of the upper and lower runners of the exhaust end designed in the step S202 and the step S203 according to a certain proportion, and milling the upper and lower runners respectively by taking the L2 position as a lower cutter point during milling, so that the cutter milling cutter always presents a negative angle relative to the normal direction of the surface to be cut, namely a 'pushing' processing mode. Specifically, a layer is milled in the upward flow channel direction, then a layer is milled in the downward flow channel direction, and the process is repeated until the slotting milling of the exhaust end is completed, wherein the slotting-removed woolen body L4 of the downward knife and the five-axis layer milling is shown in fig. 5 at the exhaust end.
The milling cutter is ensured to have a proper forward inclination angle by adopting a 'pushing' processing mode, the cutting force of all contact points of the part is not obviously changed, meanwhile, the overhanging length of the cutter is reduced, the rigidity of the cutter is kept, and the abrasion consumption of the cutter is slowed down.
S205, semi-finish milling of an exhaust end: adopts a back-shaped tool path layered milling, and the milling direction of the tool path is as follows: the half finish milling is carried out on the blade basin, the blade backs and the upper and lower runners, the surface roughness of parts is improved, and a schematic diagram of a half finish milling cutter is shown in fig. 6.
S206, dividing the air inlet end grooving area into two parts: the air inlet end is generally divided into an upper air inlet end flow passage area and a lower air inlet end flow passage area by taking the middle position of the air inlet end as a boundary.
S207, designing a layer milling cutter rail of a flow passage area on an air inlet end: milling in the direction of an upper flow channel by taking the L3 position as a lower cutter point, milling a step taper ball cutter at a negative angle, longitudinally adopting a certain step distance to perform rough materials in the upper flow channel area at the slotting air inlet end of the layer milling cutter rail, and a cutter path schematic diagram is shown in figure 7.
S208, designing a layer milling cutter rail of a lower flow passage area of the air inlet end: milling in the direction of a lower flow channel by taking the L3 position as a lower cutter point, milling a step taper ball cutter at a negative angle, longitudinally adopting a certain step distance to perform milling of a rough material in the lower flow channel region of the slotting air inlet end of the layer milling cutter rail, and a cutter path schematic diagram is shown in figure 8.
S209, combining an upper runner program and a lower runner program, and milling a slotting air inlet end for a downward cutter and a five-axis layer: and (3) combining the layer milling cutter rails of the upper and lower runners of the air inlet ends designed in the step S207 and the step S208 according to a certain proportion. During milling, the middle of the slotting region, and one side close to the leaf basin or the leaf back are used as lower cutter points to mill the upper and lower runners respectively, so that the cutter milling cutter always presents a negative angle relative to the normal direction of the surface to be cut, namely a 'pushing' processing mode. Specifically, a layer is milled in the upward flow channel direction, then a layer is milled in the downward flow channel direction, and the process is repeated until the slotting milling of the air inlet end is finished. The air inlet end is shown in fig. 9 for the rough material L5 which is removed by slotting the lower cutter and the five-axis layer milling.
S2010, half finish milling of an air inlet end: adopts a back-shaped tool path layered milling, and the milling direction of the tool path is as follows: the method comprises the steps of carrying out semi-finish milling on the leaf basin, the leaf backs and the upper and lower runners, and improving the surface roughness of parts.
The embodiment is a machining step of closed type integral vane ring opposite type downward cutter cutting and five-axis layer milling slotting milling, milling is carried out along the curvature change of the vane profile, the surface allowance of the vane profile is uniform, the phenomenon that the residual of the transfer R of the fixed-axis milling root is overlarge is avoided, the vector milling of the cutter shaft is not required to be selected for multiple times, and the requirement is met. And a five-axis milling strategy is selected, so that no redundant empty tool path exists, the material removal rate is ensured, the surface roughness range of the grooved blade profile is Ra1.0-Ra1.6, and the roughness requirement of the subsequent corrosion inspection is met.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (8)
1. The five-axis numerical control milling method for the blisk is characterized by comprising the following steps of:
dividing an exhaust end slotting region and an intake end slotting region: the middle is taken as a boundary to be divided into an upper flow passage area at the exhaust end, a lower flow passage area at the exhaust end, an upper flow passage area at the air inlet end and a lower flow passage area at the air inlet end;
designing a layer milling cutter rail of each area: milling in the upward flow channel direction by taking the middle of the exhaust end as a lower cutter point, and carrying out layer milling cutter rail slotting and exhaust end upper flow channel region rough materials; milling in the direction of a lower flow channel by taking the middle of the exhaust end as a lower cutter point, and carrying out milling in the region of the lower flow channel of the slotted exhaust end of the layer milling cutter rail; milling in the upward flow channel direction by taking the middle of the air inlet end as a lower cutter point, and carrying out milling on the rough material in the upper flow channel area of the grooved air inlet end of the layer milling cutter rail; milling in the direction of a lower flow channel by taking the middle of the air inlet end as a lower cutter point, and carrying out milling on the rough material in the lower flow channel area of the air inlet end of the slotting of the layer milling cutter rail; the tool in each region being at a negative angle relative to the normal to the surface being cut;
milling a slotting exhaust end for a downward cutter and a five-axis layer: combining the layer milling cutter rail of the upper flow passage area of the exhaust end and the layer milling cutter rail of the lower flow passage area of the exhaust end according to a certain proportion, taking one side, close to the leaf basin or the leaf back, of the slotting area as a lower cutter point, wherein a cutter is in a negative angle relative to the normal direction of a cut surface, firstly milling one layer in the upper flow passage direction, and then milling one layer in the lower flow passage direction, and reciprocating until slotting and milling of the exhaust end are finished;
slotting air inlet ends of a downward cutter and a five-axis layer mill: and (3) combining the layer milling cutter rail of the upper flow passage area of the air inlet end and the layer milling cutter rail of the lower flow passage area of the air inlet end according to a certain proportion, taking one side, close to the leaf basin or the leaf back, of the slotting area as a lower cutter point, wherein a cutter is in a negative angle relative to the normal direction of the surface to be cut, firstly milling one layer in the upper flow passage direction, and then milling one layer in the lower flow passage direction, and repeating the steps until slotting and milling of the air inlet end are finished.
2. The method of claim 1, further comprising, after the step of facing the downstream blade, five-axis layer milling the slotted exhaust end:
semi-finish milling of the exhaust end: and (3) adopting a back-shaped cutter rail for layered milling, and carrying out semi-finish milling on a leaf basin, a leaf back and an upper runner and a lower runner at the exhaust end, wherein the milling directions of the cutter rails are as follows in sequence: an upper exhaust runner vane back side, an upper exhaust runner vane bowl side, a lower exhaust runner vane back side and an upper exhaust runner vane back side.
3. The method of claim 1, further comprising, after the step of facing the lower blade, five-axis layer milling the slotted inlet end:
half finish milling of air inlet end: and (3) adopting a back-shaped cutter rail for layered milling, and carrying out semi-finish milling on a leaf basin, a leaf back and an upper runner and a lower runner at the air inlet end, wherein the milling directions of the cutter rails are as follows in sequence: the air inlet end upper runner blade back side, the air inlet end upper runner blade basin side, the air inlet end lower runner blade back side and the air inlet end upper runner blade back side.
4. The five-axis numerical control milling method of the blisk according to claim 1, wherein the cutting parameters are: the cutting depth of each layer is 0.6mm-1.0mm in the longitudinal direction, the transverse step distance is 3mm-5mm, the feeding speed of each tooth of the cutter is 0.08mm-0.1mm, and the cutting speed is 40m/min-60m/min.
5. The method of five axis numerically controlled milling of a blisk according to claim 1, wherein the tool is at a negative angle with respect to the normal to the surface being cut, the negative angle having a degree of no more than negative 20 degrees.
6. The five-axis numerical control milling method of the blisk according to claim 1, wherein the surface roughness of the grooved blisk ranges from Ra1.0 to Ra1.6.
7. The five-axis numerical control milling method of the blisk according to any one of claims 1 to 6, wherein the cutter is a stepped taper ball head cutter.
8. The five-axis numerically controlled milling method of a blisk according to any one of claims 1 to 6, wherein the five-axis milling machine used is a lischti g-mill 1150.
Priority Applications (1)
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182785A (en) * | 2006-11-08 | 2008-05-21 | 通用电气公司 | Integrally bladed rotor having an MMC ring component and an airfoil component having mmc airfoils |
| CN102085576A (en) * | 2010-12-29 | 2011-06-08 | 沈阳黎明航空发动机(集团)有限责任公司 | Five-axis linkage variable-axis plunge milling numerically controlled processing method for blade part of integral impeller |
| DE102011102251A1 (en) * | 2011-05-23 | 2012-11-29 | Mtu Aero Engines Gmbh | Method for manufacturing integral bladed rotor disk of integral bladed rotor of fluid flow engine, such as aircraft engine, involves forming integral blade ring by connecting adjacent blades in blade root region by friction stir welding |
| WO2017042158A1 (en) * | 2015-09-08 | 2017-03-16 | Technicut Limited | Method and tool for machining a blisk |
| CN106513804A (en) * | 2016-11-29 | 2017-03-22 | 沈阳黎明航空发动机(集团)有限责任公司 | Milling method of blade of high-temperature alloy whole blade ring |
| CN107159951A (en) * | 2016-11-29 | 2017-09-15 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of integrated impeller blade circulates milling rigidity reinforced method |
| CN107486582A (en) * | 2017-08-25 | 2017-12-19 | 北京航空航天大学 | It is a kind of to be suitable to the complex-curved not rounded Tool in Milling processing unit (plant) of processing enclosed |
| CN107971714A (en) * | 2017-11-24 | 2018-05-01 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of high temperature alloy entirety leaf joint blade part milling fluting processing method |
| CN109396764A (en) * | 2018-11-17 | 2019-03-01 | 共享智能装备有限公司 | A kind of processing method of mixed-flow block cast runner |
| CN110976976A (en) * | 2019-11-14 | 2020-04-10 | 中国航发沈阳黎明航空发动机有限责任公司 | Closed type blisk ring blade milling cutter connecting control method |
| CN112059259A (en) * | 2020-09-18 | 2020-12-11 | 中国航发贵州黎阳航空动力有限公司 | Machining method and machining clamp for cantilever type blade ring |
| CN112792507A (en) * | 2021-01-04 | 2021-05-14 | 中国航空制造技术研究院 | Preparation method of titanium alloy blisk |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106624667B (en) * | 2017-02-10 | 2019-01-15 | 大连理工大学 | A kind of slotting milling method of integral wheel biserial fluting |
-
2022
- 2022-06-07 CN CN202210640479.XA patent/CN114871481B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182785A (en) * | 2006-11-08 | 2008-05-21 | 通用电气公司 | Integrally bladed rotor having an MMC ring component and an airfoil component having mmc airfoils |
| CN102085576A (en) * | 2010-12-29 | 2011-06-08 | 沈阳黎明航空发动机(集团)有限责任公司 | Five-axis linkage variable-axis plunge milling numerically controlled processing method for blade part of integral impeller |
| DE102011102251A1 (en) * | 2011-05-23 | 2012-11-29 | Mtu Aero Engines Gmbh | Method for manufacturing integral bladed rotor disk of integral bladed rotor of fluid flow engine, such as aircraft engine, involves forming integral blade ring by connecting adjacent blades in blade root region by friction stir welding |
| WO2017042158A1 (en) * | 2015-09-08 | 2017-03-16 | Technicut Limited | Method and tool for machining a blisk |
| CN106513804A (en) * | 2016-11-29 | 2017-03-22 | 沈阳黎明航空发动机(集团)有限责任公司 | Milling method of blade of high-temperature alloy whole blade ring |
| CN107159951A (en) * | 2016-11-29 | 2017-09-15 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of integrated impeller blade circulates milling rigidity reinforced method |
| CN107486582A (en) * | 2017-08-25 | 2017-12-19 | 北京航空航天大学 | It is a kind of to be suitable to the complex-curved not rounded Tool in Milling processing unit (plant) of processing enclosed |
| CN107971714A (en) * | 2017-11-24 | 2018-05-01 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of high temperature alloy entirety leaf joint blade part milling fluting processing method |
| CN109396764A (en) * | 2018-11-17 | 2019-03-01 | 共享智能装备有限公司 | A kind of processing method of mixed-flow block cast runner |
| CN110976976A (en) * | 2019-11-14 | 2020-04-10 | 中国航发沈阳黎明航空发动机有限责任公司 | Closed type blisk ring blade milling cutter connecting control method |
| CN112059259A (en) * | 2020-09-18 | 2020-12-11 | 中国航发贵州黎阳航空动力有限公司 | Machining method and machining clamp for cantilever type blade ring |
| CN112792507A (en) * | 2021-01-04 | 2021-05-14 | 中国航空制造技术研究院 | Preparation method of titanium alloy blisk |
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