CN107159951B - A kind of integrated impeller blade cycle milling rigidity reinforced method - Google Patents
A kind of integrated impeller blade cycle milling rigidity reinforced method Download PDFInfo
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- CN107159951B CN107159951B CN201611069012.5A CN201611069012A CN107159951B CN 107159951 B CN107159951 B CN 107159951B CN 201611069012 A CN201611069012 A CN 201611069012A CN 107159951 B CN107159951 B CN 107159951B
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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
- B23C3/16—Working surfaces curved in two directions
- B23C3/18—Working surfaces curved in two directions for shaping screw-propellers, turbine blades, or impellers
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/4097—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by using design data to control NC machines, e.g. CAD/CAM
- G05B19/4099—Surface or curve machining, making 3D objects, e.g. desktop manufacturing
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Abstract
The present invention discloses a kind of integrated impeller blade cycle milling rigidity reinforced method, and this method combines half finish-milling in process with milling cutter rail cycle, coordinates allowance balance, realizes enhancing system rigidity, and avoid connecing the generation of tool marks；It is strong and weak according to the rigidity of blade profile, determine the finish-milling and half finish-milling surplus of blade profile；According to the maximum gauge at the leaf length degree of blade profile, blade tip, the power of blade profile rigidity is judged, generally finish-milling surplus is set as 0.2mm at blade tip, and surplus 0.3mm at blade root, surplus changes, can be also adjusted according to actual conditions in gradient；The process need to ensure that blade profile half finish-milling rigidity, processing do not generate chatter, and half finish-milling surplus is generally set to 0.5mm.It improves processing efficiency and obtains good surface quality.The shortcomings that avoiding other rigidity reinforced methods does not increase the non-processing time, avoids the generation for connecing tool marks and do not need additional process, is a kind of reliable and easily processing method.
Description
Technical field
The present invention relates to aero-engine skill blade processing art field, specifically a kind of integrated impeller blade recycles milling
Rigidity reinforced method
Background technology
The blade profile processing of blisk belongs to thin-wall part processing.The leaf exhibition of blade profile, chord length, thickness (blade tip maximum gauge)
The ratio between often reach 40：20：1, belong to typical thin-walled parts.In process, need to take many enhancing system rigidities
Means obtain high processing efficiency and surface quality of workpieces.Such as packing material, layering processing, increasing outer shroud, (enclosed leaf joint adds
The methods of work).The method of packing material needs repeatedly to fill during use, especially when the disposable milling of blade profile
Under, 3~4 fillings are needed, the non-processing time is longer, and the difference of packing material, has different influences to cutting fluid etc.,
Even influence processing；Layering processing can effectively enhance the rigidity of part, but will produce and connect between layers in process
Tool marks, it is necessary to mode is repaiied by pincers, the light decorations process on subsequent blade profile surface could be carried out, increase the process-cycle, meanwhile,
It is required that pincers, which repair personnel, has certain level of skill；The mode for increasing outer shroud increases technique ring in the outside of leaf dish, utilizes enclosed
The mode of milling carries out blade profile processing, and this method increase certain difficulty of processing, and needs to consider the removal problem of outer shroud.
In such a way that half finish-milling-finish-milling recycles milling, rational allowance distribution is realized in no packing material, no this technology
The modes such as outer shroud need to be increased, using part itself surplus, the effect of enhancing milling position rigidity obtains good cutting ginseng
Number, improves surface quality of workpieces and processing efficiency.
Invention content
The present invention is in such a way that half finish-milling-finish-milling recycles milling, rational allowance distribution, realizes without filling material
Expect, be not required to increase the modes such as outer shroud, using part itself surplus, the effect of enhancing milling position rigidity obtains good cut
Parameter is cut, surface quality of workpieces and processing efficiency are improved.
The technical solution adopted by the present invention is：
A kind of integrated impeller blade recycles milling rigidity reinforced method, and this method is by half finish-milling and essence in process
The cycle combination of milling cutter rail, coordinates allowance balance, realizes enhancing system rigidity, and avoid connecing the generation of tool marks；
This approach includes the following steps：
1) strong and weak according to the rigidity of blade profile, determine the finish-milling and half finish-milling surplus of blade profile；
According to the maximum gauge at the leaf length degree of blade profile, blade tip, the power of blade profile rigidity is judged, generally more than finish-milling
It measures and is set as 0.2mm at blade tip, surplus 0.3mm at blade root, surplus changes, can be also adjusted according to actual conditions in gradient；
The process need to ensure that blade profile half finish-milling rigidity, processing do not generate chatter, and half finish-milling surplus is generally set to 0.5mm；
2) cutter is chosen；
This method is by half finish-milling, finish-milling while to machine, and the half finish-milling shape of tool is identical as finish-milling cutter, due to
The increase of surplus, cutter diameter should meet processing request, generate knife rail；Because the length of cutter path increases, and then determine cutter
Working durability, according to the length of Tool in Cutting as weigh, select with enough working durabilities cutter, complete cutting；
3) cutting parameter is chosen；
First cutting parameter is corresponding relationship with cutter life, according to the working durability of cutter, chooses cutting parameter,
Complete cutting；Second cutting parameter chooses corresponding cutting parameter according to half finish-milling, finish-milling processing method；Specifically half finish-milling
Based on big material removing rate, by the way of the low feeding of big cutting-in, finish-milling is adopted with obtaining based on good surface quality
With the mode of small cutting-in roughing feed；By taking titanium alloy as an example, half finish-milling cutting speed 60m/min, finish-milling cutting speed 150~
300m/min；
4) the parameter layer milling such as selection processing method-；
This method must use the processing method of finish-milling to carry out, and the processing method of half finish-milling must be with the processing side of finish-milling
Formula is identical；Using etc. by the way of parameter layer milling, so as to the machined surface quality obtained；
5) NC cutting tool track is generated；
Utilize common software ug (three-dimensional CAD/CAM designs machining software) or special-purpose software MAX-PAC (turbo wheel numbers
Control machining prgraming software package) multiaxis programing function, press step 4) mode, generation NC cutting tool track；The track feature is half
Finish-milling, finish-milling mixing carry out, i.e., first carry out the processing of a number of half finish-milling, carry out finish-milling processing again, after carry out half finish-milling again and add
Work carries out successively；Such as semifinishing program is of five storeys, i.e. BJ1, BJ2......BJ5；Finish-milling program has 10 layers, as J1,
J2......J10, processing program execution sequence be BJ1, BJ2, J1, BJ2, J2, J3, BJ3, J4, J5, BJ4, J6, J7, BJ5,
J8、J9、J10；
6) numerical control program is edited；
If in step 5), software can be only generated individual half finish-milling, finish-milling program, at this time, it may be necessary to manually will half essence
Milling, finish-milling program are split as unit of layer, i.e., each layer is one section of program, according to half finish-milling, the cutter track number of finish-milling program
It is combined again；
7) numerical control program emulates；
If it is the program that software normally generates, without manual amendment, it is only necessary to by Numerical Control Simulation, use here
VERICUT softwares, proving program correctness；If the program obtained by step 6), it is also necessary to pay close attention to half finish-milling and essence
Whether the sequence of milling is appropriate, i.e., the same Working position is carrying out finish-milling processing after first carrying out half finish-milling processing；If not this
Sequentially, return to step 6 continue editing procedure and start to process after this step qualification.
It is an advantage of the invention that：This method can effectively enhance the rigidity of milling system, and it is good to improve processing efficiency acquisition
Good surface quality.Meanwhile the shortcomings that avoiding other rigidity reinforced methods, do not increase the non-processing time, avoid and connect tool marks
Generation and do not need additional process, be a kind of reliable and easily processing method.
Description of the drawings
Fig. 1 is the surplus machining sketch chart of the present invention.
Fig. 2 be the present invention etc. parameter layer milling schematic diagram.
Fig. 3 is the cycle milling cutter rail precedence diagram of the present invention.
Specific implementation mode
As shown in Figs. 1-3, a kind of integrated impeller blade recycles milling rigidity reinforced method, and this method will be in process
Half finish-milling and milling cutter rail cycle combine, coordinate allowance balance, realizing enhances system rigidity, and avoids connecing the generation of tool marks；
This approach includes the following steps：
1) strong and weak according to the rigidity of blade profile, determine the finish-milling and half finish-milling surplus of blade profile；
According to the maximum gauge at the leaf length degree of blade profile, blade tip, the power of blade profile rigidity is judged, generally more than finish-milling
It measures and is set as 0.2mm at blade tip, surplus 0.3mm at blade root, surplus changes, can be also adjusted according to actual conditions in gradient；
The process need to ensure that blade profile half finish-milling rigidity, processing do not generate chatter, and half finish-milling surplus is generally set to 0.5mm；
2) cutter is chosen；
This method is by half finish-milling, finish-milling while to machine, and the half finish-milling shape of tool is identical as finish-milling cutter, due to
The increase of surplus, cutter diameter should meet processing request, generate knife rail；Because the length of cutter path increases, and then determine cutter
Working durability, according to the length of Tool in Cutting as weigh, select with enough working durabilities cutter, complete cutting；
3) cutting parameter is chosen；
First cutting parameter is corresponding relationship with cutter life, according to the working durability of cutter, chooses cutting parameter,
Complete cutting；Second cutting parameter chooses corresponding cutting parameter according to half finish-milling, finish-milling processing method；Specifically half finish-milling
Based on big material removing rate, by the way of the low feeding of big cutting-in, finish-milling is adopted with obtaining based on good surface quality
With the mode of small cutting-in roughing feed；By taking titanium alloy as an example, half finish-milling cutting speed 60m/min, finish-milling cutting speed 150~
300m/min；
4) the parameter layer milling such as selection processing method-；
This method must use the processing method of finish-milling to carry out, and the processing method of half finish-milling must be with the processing side of finish-milling
Formula is identical；Using etc. by the way of parameter layer milling, so as to the machined surface quality obtained；
5) NC cutting tool track is generated；
Utilize common software ug (three-dimensional CAD/CAM designs machining software) or special-purpose software MAX-PAC (turbo wheel numbers
Control machining prgraming software package) multiaxis programing function, press step 4) mode, generation NC cutting tool track；The track feature is half
Finish-milling, finish-milling mixing carry out, i.e., first carry out the processing of a number of half finish-milling, carry out finish-milling processing again, after carry out half finish-milling again and add
Work carries out successively；Such as semifinishing program is of five storeys, i.e. BJ1, BJ2......BJ5；Finish-milling program has 10 layers, as J1,
J2......J10, processing program execution sequence be BJ1, BJ2, J1, BJ2, J2, J3, BJ3, J4, J5, BJ4, J6, J7, BJ5,
J8、J9、J10；
6) numerical control program is edited；
If in step 5), software can be only generated individual half finish-milling, finish-milling program, at this time, it may be necessary to manually will half essence
Milling, finish-milling program are split as unit of layer, i.e., each layer is one section of program, according to half finish-milling, the cutter track number of finish-milling program
It is combined again；
7) numerical control program emulates；
If it is the program that software normally generates, without manual amendment, it is only necessary to by Numerical Control Simulation, use here
VERICUT softwares, proving program correctness；If the program obtained by step 6), it is also necessary to pay close attention to half finish-milling and essence
Whether the sequence of milling is appropriate, i.e., the same Working position is carrying out finish-milling processing after first carrying out half finish-milling processing；If not this
Sequentially, return to step 6 continue editing procedure and start to process after this step qualification.
When selecting common software or special-purpose software, provided that the cutter path design function in step 5), Ke Yizhi
Program is delivered a child into, step 6) can be skipped at this time, directly carries out step 7)；If common software can generate respectively without the function
Half finish-milling, finish-milling program execute step 6).
Embodiment
Blisk is titanium alloy material, blade maximum outside diameter size：Φ532mm；The minimum outer diameter size of blade：Φ
460mm；The maximum chord width size of blade：26.5mm；Blade amt：79；Adjacent blades minimum spacing：About 10mm；
Steps are as follows：
1) finish-milling and half finish-milling surplus of blade profile are determined：Here half finish-milling surplus of blade profile is chosen for 0.5mm；Finish-milling surplus
It is distributed by gradient, 0.2mm is set as at blade tip, be 0.3mm at blade root.
2) suitable cutter is chosen；
According to the rose cutter of the minimum spacing initial option diameter of phi 8mm of adjacent blades, it is full to be computed the cutter diameter
The requirement of foot half finish-milling, finish-milling program；Through consulting cutter handbook, cutter life is met the requirements.
3) suitable cutting parameter is chosen；
By experiment, half finish-milling machined parameters are：Cutting speed 60m/min, feed engagement 0.1mm/ teeth；Finish-milling adds
Work parameter is：Cutting speed 150m/min, feed engagement 0.04mm/ teeth；
4) the parameter layer millings such as suitable processing method-are selected；
5) NC cutting tool track is generated；
Using professional software MAXPAC, using etc. parameter layer milling mode, generate cutter path, such as Fig. 2.Wherein, half finish-milling
71 layers of track, 140 layers of finish-milling track, knife rail sequence such as Fig. 3.Due to directly generating program, step 6) is skipped.
7) numerical control program emulates；
Cutter path is emulated using Vericut softwares, and check emulation in whether there is cut, cutter interference
Situations such as, no problem carries out part processing.
After this method, part (blade position) Contrast on effect：
As seen from the above table, this method eliminates the non-cutting time spent by packing material, meanwhile, avoid connecing for layering
The generation of tool marks mark improves surface quality due to the enhancing of system rigidity, and machined parameters-cutting speed, feeding have one
Fixed promotion, shortens process time.
Claims (2)
1. a kind of integrated impeller blade recycles milling rigidity reinforced method, it is characterised in that：
This method combines half finish-milling in process with milling cutter rail cycle, coordinates allowance balance, realizes that enhancing system is rigid
Property, and avoid connecing the generation of tool marks；
This approach includes the following steps：
1) strong and weak according to the rigidity of blade profile, determine the finish-milling and half finish-milling surplus of blade profile；
According to the maximum gauge at the leaf length degree of blade profile, blade tip, the power of blade profile rigidity is judged, be set as leaf for finish-milling surplus
0.2mm at point, surplus 0.3mm at blade root, surplus change, can be also adjusted according to actual conditions in gradient；The process needs to protect
Blade profile half finish-milling rigidity is demonstrate,proved, processing does not generate chatter, and half finish-milling surplus is set as 0.5mm；
2) cutter is chosen；
This method is by half finish-milling, finish-milling while to machine, and the half finish-milling shape of tool is identical as finish-milling cutter, due to surplus
Increase, cutter diameter should meet processing request, generate knife rail；Because the length of cutter path increases, and then determine the cutting of cutter
Service life selects the cutter with enough working durabilities according to the length of Tool in Cutting as weighing, and completes cutting；
3) cutting parameter is chosen；
First cutting parameter is corresponding relationship with cutter life, according to the working durability of cutter, chooses cutting parameter, completes to cut
It cuts；Second cutting parameter chooses corresponding cutting parameter according to half finish-milling, finish-milling processing method；Specifically half finish-milling is with big material
Expect based on removal rate, by the way of the low feeding of big cutting-in, finish-milling is big using small cutting-in to obtain based on good surface quality
The mode of feeding；Half finish-milling cutting speed 60m/min, 150~300m/min of finish-milling cutting speed；
4) the parameter layer milling such as selection processing method-；
This method must use the processing method of finish-milling to carry out, and the processing method of half finish-milling must be with the processing method phase of finish-milling
Together；Using etc. by the way of parameter layer milling, so as to the machined surface quality obtained；
5) NC cutting tool track is generated；
Using the multiaxis programing function of common software ug or special-purpose software MAX-PAC NC cutting tool rail is generated by step 4) mode
Mark；The track feature is half finish-milling, finish-milling mixing progress, i.e., first carries out a number of half finish-milling processing, carries out finish-milling processing again,
It carries out half finish-milling processing again afterwards, carries out successively；
6) numerical control program is edited；
If in step 5), software can be only generated individual half finish-milling, finish-milling program, at this time, it may be necessary to manually by half finish-milling, finish-milling
Program is split as unit of layer, i.e., each layer is one section of program, and group is carried out again according to the cutter track number of half finish-milling, finish-milling program
It closes；
7) numerical control program emulates；
If it is the program that software normally generates, without manual amendment, it is only necessary to by Numerical Control Simulation, use VERICUT here
Software, proving program correctness；If the program obtained by step 6), it is also necessary to pay close attention to the sequence of half finish-milling and finish-milling
Whether appropriate, i.e., the same Working position carries out finish-milling processing again after first carrying out half finish-milling processing；If not the sequence, return
Step 6, continue editing procedure to start to process after this step qualification.
2. a kind of integrated impeller blade according to claim 1 recycles milling rigidity reinforced method, it is characterised in that：
When selecting common software or special-purpose software, provided that the cutter path design function in step 5), can directly give birth to
At program, step 6) can be skipped at this time, directly carry out step 7)；If common software can generate half essence respectively without the function
Milling, finish-milling program execute step 6).
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| CN112404913B (en) * | 2020-10-13 | 2022-11-15 | 中国航发沈阳黎明航空发动机有限责任公司 | Titanium alloy blisk blade processing method |
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| CN114700539B (en) * | 2022-04-27 | 2023-07-18 | 西安三航动力科技有限公司 | Combined milling method for five-axis channels of blisk |
| CN114871481B (en) * | 2022-06-07 | 2023-11-10 | 中国航发航空科技股份有限公司 | Five-axis numerical control milling method for blisk |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |
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