CN106406239A - Method of machining complicated surface efficiently - Google Patents
Method of machining complicated surface efficiently Download PDFInfo
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- CN106406239A CN106406239A CN201611069036.0A CN201611069036A CN106406239A CN 106406239 A CN106406239 A CN 106406239A CN 201611069036 A CN201611069036 A CN 201611069036A CN 106406239 A CN106406239 A CN 106406239A
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- 238000003754 machining Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005520 cutting process Methods 0.000 claims abstract description 69
- 238000004088 simulation Methods 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims description 38
- 238000004458 analytical method Methods 0.000 claims description 25
- 230000000694 effects Effects 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 5
- 238000005457 optimization Methods 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 2
- 238000003672 processing method Methods 0.000 claims description 2
- 238000011160 research Methods 0.000 claims description 2
- 238000013433 optimization analysis Methods 0.000 claims 1
- 206010044565 Tremor Diseases 0.000 description 3
- 230000035772 mutation Effects 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 244000131316 Panax pseudoginseng Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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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
-
- 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
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/35—Nc in input of data, input till input file format
- G05B2219/35108—Generate offset tool moving path in restrained curved plane
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- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Numerical Control (AREA)
Abstract
The invention discloses a method of machining a complicated surface efficiently, which comprises the following steps: (1) collecting cutter parameters, machining parameters and part information before improvement; (2) building a part simulation model to simulate the actual machining state before improvement; (3) getting the cutting force, cutting temperature and spindle load of the machining state through simulation; (4) changing the cutter information of the simulation model, and adjusting the geometric parameters of the cutter; (5) re-simulating a new simulation model to get the cutting force, cutting temperature and spindle load after adjustment; (6) comparatively analyzing the indicators before and after adjustment; (7) with constant cutting load as a criterion, adjusting the cutting machining parameters to ensure that the machining indicators of the cutter after adjustment are the same with those in the original state, and getting the cutting parameter values after adjustment; (8) simulating an improved machining model, and optimizing the cutter path with cutting load balancing as a goal; and (9) performing trial cutting machining. By balancing the cutting load, the machining process is stable, the efficiency of complicated surface machining based on a single process is improved, and machining chatter is eliminated.
Description
Technical field
Present invention design aero-engine manufactures field, specifically a kind of complex-curved high-efficiency machining method.
Background technology
Complex surface machining difficulty is big, time-consuming for processing, the overall working (machining) efficiency of serious restriction part.Traditional diamond-making technique
How based on trial cut machined parameters, interim preferred by machined parameters, to realizing the best weights of working (machining) efficiency and quality
Weighing apparatus, but effect is not satisfactory, the often generation along with phenomenons such as processing tremor, the torsions of type face, the processing of impact part in processing
The coarse-fine stage in quality, and the course of processing lacks obvious division limits, and process tool most time has identical situation, respectively
Stage, only on machined parameters, slightly different, and tool wear is more serious, and overall processing efficiency is because of part machining state and cutter
The restriction of abrasion condition is difficult to effectively be lifted.
Content of the invention
The present invention seeks to low for complex surface machining efficiency, surface quality of workpieces is poor, the serious present situation of tool wear,
A kind of efficient complex surface machining method of balanced cutting load is proposed, do not increase lathe, part load on the basis of, improve
Overall feed speed, homogenizes cutting state, reduces tool wear, eliminates the part tremor causing because of cutting force mutation, significantly carries
Rise working (machining) efficiency and the crudy of curved surface.
For achieving the above object, the present invention adopts following technical proposals；
A kind of complex-curved high-efficiency machining method, specific implementation step is as follows：
Step 1, original performance analysis；Table after analysis processing cutter for same relevant parameter, cutting data parameter and processing
Face mass parameter, and simulation analysis are carried out to cutting force, chip-load in the course of processing, original adding, according to analysis result combing
Every machining state index of work scheme, as the reference standard after improving；
Step 2, multiple-factor/multiplicity.The adjustment tool geometrical parameter larger on course of processing impact and cutting ginseng
Number, wherein tool geometrical parameter includes the cutter number of teeth, tool radius, tool arc Rc, helical angle；It is deep that cutting parameter includes cutting
Degree, cutting speed and the amount of feeding, carry out simulation analysis to complex surface machining process, draw each factor/factor shape after improvement
State；
Step 3, balanced cutting load analysis of strategies.Foundation is distributed as with original machining state load, planning is rational to be carried
Lotus distributed area, emulates to the course of processing, the numerical value of each factor/factor of real-time adjustment, the cutting in equilibrium processor
Load is distributed, and reduces the impact to crudy for the processing mutation.
Main affecting factors/factor that step 4, determination increase on course of processing impact.Using orthogonal test analysis method, really
Fixed key factor/the factor larger to cutting force in the course of processing and cutting heat affecting.
Step 5, key factor/factorial analysiss.By changing key factor/factor, cutting process is emulated,
Draw the effect tendency to cutting force in cutting process and cutting temperature for the key factor/factor, determine rational parameter region
Between, as the reference standard of each factor/factor adjustment；
Step 6, chip-load state analysiss.Interval according to key factor/factor parameter, adjust cutter major parameter and cut
Cut machined parameters, draw the chip-load distribution situation after each factor/factors optimization；
Improved efficiency under step 7, constant load.Optimized by preliminary analysis, according to reality processing demand, determine and reasonably bear
Carry interval, with this load interval for constraint, to lift working (machining) efficiency as target, adjust machined parameters, realize the effect under constant load
Rate is lifted；
The method have the advantages that：
This method passes through balanced cutting load, so that whole process is tended to be steady, and can be obviously improved single complex procedures bent
Face working (machining) efficiency, eliminates the processing tremor being brought because of cutting variation, improves surface smoothness, reduces cutter loss.
Brief description
Fig. 1 is the flow chart of the present invention.
Fig. 2 is blade type face schematic diagram.
Fig. 3 is key factor/factor effect tendency figure.
Fig. 4 is chip-load scattergram.
Specific embodiment
Combine Figure of description 1-4 the present invention is described in more detail taking aero-engine stator blade as a example.
A kind of complex-curved high-efficiency machining method it is characterised in that：
Processing method course of action：
1) collect improve before cutter parameters (number of teeth, diameter, helical angle, anterior angle, relief angle, RC), machined parameters (cutting-in,
Feeding, rotating speed), parts information (material)；
2) part phantom, the reality processing state before simulation improvement are set up；
3) emulation draws cutting force, cutting temperature and the main shaft load of machining state；
4) tool-information of phantom, the geometric parameter of adjustment cutter are changed；
5) again emulate new phantom, cutting force after being adjusted, cutting temperature and main shaft load；
6) indices before and after relative analyses adjustment；
7) with chip-load constant as criterion, adjustment Cutting Parameters it is ensured that cutter adjustment after processing index with former
State is identical, the cutting parameter value after being adjusted；
8) processing model after emulation improves, with balanced cutting load as target, optimal tool position track；
9) trial cut processing.
A kind of complex-curved high-efficiency machining method, comprises the steps；
Step 1, original performance analysis；
Blade blade type face is typically complex-curved (as shown in Figure 1), and this type blade blade type face of Field Research processes
Parameter, concrete numerical value is as shown in table 1：
The original machining state of certain blade of table 1 investigates table；
Step 2, multiple-factor/multiplicity
By scene with product and reality processing empirical statistics, the factor/factor larger on course of processing impact mainly has knife
Tool geometric parameter, geometric parameter includes the cutter number of teeth, tool radius, tool arc Rc, helical angle and cutting parameter, cutting parameter
Including cutting depth, cutting speed and the amount of feeding, adjust each parameter value, carry out simulation analysis, result is as shown in table 2；
Table 2
Step 3, balanced cutting load analysis of strategies；According to the simulation result of step 2, set chip-load distributed area,
The course of processing is emulated, the numerical value of each factor/factor of real-time adjustment, realize load equalization distribution in the course of processing；
Main affecting factors/factor that step 4, determination increase on course of processing impact；It is right to be determined using orthogonal experiment
The larger factor/the factor (as shown in table 3, table 4) of cutting process impact, by orthogonal test analysis, determines and cutting is added
The larger tool geometrical parameter of work process influence has the cutter number of teeth and tool arc Rc, and larger on cutting process impact adds
Work parameter has cutting depth and the amount of feeding, table 3 tool geometrical parameter orthogonal test table, table 4 machined parameters orthogonal test table；
Table 3
Table 4
Step 5, key factor/factorial analysiss；By changing key factor/factor, cutting process is emulated,
Draw the effect tendency to cutting force in cutting process and cutting temperature for the key factor/factor, as shown in Figure 2；
Step 6, chip-load state analysiss.Interval according to key factor/factor parameter, adjust cutter major parameter and cut
Cut machined parameters (as shown in table 5), draw the chip-load distribution situation after each factor/factors optimization；
Table 5
Improved efficiency under step 7, constant load；By optimizing analysis and live reality processing, entered using the parameter after optimizing
Row processing, the cost of charp tool has original 80 yuan/part to drop to 16 yuan/part, by annual 10000 estimations of processing, can save cutter
Ten thousand yuan of expense (80-16) x10000=64.Single blade machining period was changed into 30 minutes from original 43 minutes, and either simplex sequence puies forward effect
30%.
Claims (2)
1. a kind of complex-curved high-efficiency machining method it is characterised in that：
Processing method course of action：
1) cutter parameters before improving, machined parameters, parts information are collected；
2) part phantom, the reality processing state before simulation improvement are set up；
3) emulation draws cutting force, cutting temperature and the main shaft load of machining state；
4) tool-information of phantom, the geometric parameter of adjustment cutter are changed；
5) again emulate new phantom, cutting force after being adjusted, cutting temperature and main shaft load；
6) indices before and after relative analyses adjustment；
7) with chip-load constant as criterion, adjustment Cutting Parameters it is ensured that cutter adjustment after processing index and original state
Identical, after being adjusted cutting parameter value；
8) processing model after emulation improves, with balanced cutting load as target, optimal tool position track；
9) trial cut processing.
2. a kind of complex-curved high-efficiency machining method according to claim 1 it is characterised in that：
Step 1, original performance analysis
Field Research complex curved surface parts machined parameters,
Step 2, multiple-factor/multiplicity
By scene with product and reality processing empirical statistics, the factor/factor larger on course of processing impact mainly has cutter several
What parameter, geometric parameter includes the cutter number of teeth, tool radius, tool arc Rc, helical angle and cutting parameter, and cutting parameter includes
Cutting depth, cutting speed and the amount of feeding, adjust each parameter value, carry out simulation analysis；
Step 3, balanced cutting load analysis of strategies；According to the simulation result of step 2, set chip-load distributed area, to plus
Work process is emulated, the numerical value of each factor/factor of real-time adjustment, realizes load equalization distribution in the course of processing；
Main affecting factors/factor that step 4, determination increase on course of processing impact；Determined to cutting using orthogonal experiment
The larger factor/the factor of course of processing impact, by orthogonal test analysis, determines the cutter larger on cutting process impact
Geometric parameter and Cutting Parameters
Step 5, key factor/factorial analysiss；By changing key factor/factor, cutting process is emulated, draws
The effect tendency to cutting force in cutting process and cutting temperature for the key factor/factor；
Step 6, chip-load state analysiss.Interval according to key factor/factor parameter, adjustment cutter major parameter and cutting add
Work parameter, draws the chip-load distribution situation after each factor/factors optimization；
Improved efficiency under step 7, constant load；By optimization analysis and live reality processing, carry out adding using the parameter after optimizing
Work, realizes the lifting of complex surface machining efficiency and surface quality.
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| CN201611069036.0A CN106406239A (en) | 2016-11-29 | 2016-11-29 | Method of machining complicated surface efficiently |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108089457A (en) * | 2017-11-29 | 2018-05-29 | 北京航空航天大学 | A kind of process quality control method based on online finite element simulation |
| CN111240265A (en) * | 2019-12-26 | 2020-06-05 | 国营第六一六厂 | Numerical control machining and cutting technological parameter optimization method |
| CN112464469A (en) * | 2020-11-25 | 2021-03-09 | 北京航空航天大学 | Characteristic polymerization part structure for machining research and machining process optimization method |
| CN113500358A (en) * | 2021-07-23 | 2021-10-15 | 北京新风航天装备有限公司 | Precision machining method for conical body |
| CN113500359A (en) * | 2021-07-23 | 2021-10-15 | 北京新风航天装备有限公司 | Precision machining method for long-wheelbase variable-diameter complex thin-wall structural part |
| CN118951884A (en) * | 2024-10-16 | 2024-11-15 | 北京机械工业自动化研究所有限公司 | A method and device for optimizing and recommending cutting parameters of a tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108089457A (en) * | 2017-11-29 | 2018-05-29 | 北京航空航天大学 | A kind of process quality control method based on online finite element simulation |
| CN111240265A (en) * | 2019-12-26 | 2020-06-05 | 国营第六一六厂 | Numerical control machining and cutting technological parameter optimization method |
| CN112464469A (en) * | 2020-11-25 | 2021-03-09 | 北京航空航天大学 | Characteristic polymerization part structure for machining research and machining process optimization method |
| CN112464469B (en) * | 2020-11-25 | 2022-05-17 | 北京航空航天大学 | Characteristic polymerization part structure for machining research and machining process optimization method |
| CN113500358A (en) * | 2021-07-23 | 2021-10-15 | 北京新风航天装备有限公司 | Precision machining method for conical body |
| CN113500359A (en) * | 2021-07-23 | 2021-10-15 | 北京新风航天装备有限公司 | Precision machining method for long-wheelbase variable-diameter complex thin-wall structural part |
| CN118951884A (en) * | 2024-10-16 | 2024-11-15 | 北京机械工业自动化研究所有限公司 | A method and device for optimizing and recommending cutting parameters of a tool |
| CN118951884B (en) * | 2024-10-16 | 2024-12-24 | 北京机械工业自动化研究所有限公司 | Optimized recommendation method and device for cutting parameters of cutter |
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