CN106216966B - Based on adaptive machining covering high-efficiency machining method - Google Patents
Based on adaptive machining covering high-efficiency machining method Download PDFInfo
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- CN106216966B CN106216966B CN201610711964.6A CN201610711964A CN106216966B CN 106216966 B CN106216966 B CN 106216966B CN 201610711964 A CN201610711964 A CN 201610711964A CN 106216966 B CN106216966 B CN 106216966B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention discloses one kind to be based on adaptive machining covering high-efficiency machining method, including（1）Number of planes milling；（2）Metal plate drawing and forming can be bonded vacuum suction tooling；（3）The rough milling of part is carried out using five axis gantry machining centers；（4）Aging strengthening model；（5）With reference to Renishaw Probes on-line measurement, subregional finish-milling processing is carried out to part using five axis gantry machining centers；（6）Piece surface anodization.The present invention is from sheet-metal formed, parts fixation, numerical control five-axle process tool, cutting parameter, Processing Strategies and design is optimized in each process procedure such as destressing timeliness in the process, on the one hand conservative single cutting strategy is changed, using helical milling, product quality and production efficiency is made to be significantly improved, a covering process-cycle shorten to 2 days；On the other hand, the intervention degree of operating personnel is reduced, avoids human error, covering is improved and processes series-produced automation.
Description
Technical field
The present invention relates to a kind of covering reinforced structure part high quality high-efficiency machining method more particularly to one kind based on adaptive
Covering high-efficiency machining method should be processed.
Background technology
Aluminum alloy outer cover thin-wall construction designs, usually by machine screening lattice system after integral Al-alloy pretensioning plate drawing and forming
Into.Such design method can effectively control product weight, increase payload, substantially reduce number of parts, connection is greatly reduced
Assembly work amount, while detail rigidity, fatigue resistance and various unstability critical values are substantially improved compared with riveted structure,
But higher requirement correspondingly is proposed to the mechanical processing of part.Since inner mesh is more, wall is thin and wall thickness dimension is different, lead to
Normal material-removal rate is up to more than 70%.
Covering inner mesh processing at present still adds flow, roughing, semifinishing, essence using traditional five-shaft high-speed Milling Machine
Processing separates, and mode is cut and turned round to the cutter path of grid processing using traditional row, and Milling Speed is unable to reach ideal, part
There are moderate finite deformations for process, and interiors of products grid covering wall thickness needs to carry out by hand individually detection before finishing, according to inspection
It surveys result and carries out single grid cutter compensation adjustment processing, the production debugging period is longer, about 4 ~ 5 days covering process-cycle.
The technological process of traditional processing proposal is excessively cumbersome, and the technological preparation period is long.Secondly as interiors of products exist compared with
More grids inevitably will appear a large amount of corner, the cutter rail of existing such part die cavity processing in NC Machining Process
Mode is cut and turned round to mark using traditional row, is not suitable with high-rate wireless LAN, and machine tool is made to be in always when processing corner
Acceleration deceleration state, for most of the time lathe all in speed-change process, product cutting power is unstable when causing in lathe the grid to process,
The stability and efficiency of lathe can not all ensure；Third is detected using traditional-handwork, and detection quality record relies primarily on worker's skill
Energy, experience and sense of responsibility ensure, and detect heavy workload, long time period；Finally, due to material removing rate is big, product zero
Part easily generates a large amount of deformations, and part type face is caused to change greatly, and is unfavorable for subsequent product assembling and uses.
Invention content
The purpose of the present invention is that providing one kind solves the above problems, and mainly solves to deposit during current thin-walled workpiece
Quality problems, cutting force and vibration are reduced, and in pilot process using drawing and forming mode, high speed, spiral five-axis milling
Middle increase heat aging process, reduces the cutting deformation of thin-wall part, promoted processing efficiency and surface quality based on adaptive
Process covering high-efficiency machining method.
To achieve these goals, the technical solution adopted by the present invention is such：One kind is based on adaptive machining covering
High-efficiency machining method includes the following steps：
（1）According to required skin part structure, number of planes milling is carried out, and make flat condition and bent plate to plank for selection
The hole for hoist of state；
（2）According to the structure of vacuum suction tooling, the plank after logarithm milling carries out metal plate drawing and forming, can be bonded true
Empty adsorption tooling；
（3）The part shape three-dimensional modeling processed as needed, and according to modeling, carried out using five axis gantry machining centers
Part rough milling processes grid and downset areas；
（4）According to raw material difference, the aging strengthening model of specification is carried out；
（5）With reference to Renishaw Probes on-line measurement, subregional finish-milling is carried out to part using five axis gantry machining centers
Processing；
（6）Piece surface anodization.
As preferred：The step（1）In, number of planes milling specific process is：Make 4 holes for hoist, the pressure of tablet
Fill 4 lifting threaded holes of product, number milling four directions, number milling one side, deburring, number milling another side, bent plate processed；Tablet milling thickness
It is determined by rib maximum height, 4 liftings threaded hole is located at 1/4 arc length and 3/4 arc length of bent plate state, hole not milling
It wears.
As preferred：Step（2）After middle metal plate drawing and forming, product type face need to pass through model Surface inspection, bus straight line
Degree, product taper detect, and within wherein model clearance control 1.5mm, within bus straight line degree 0.2mm, the model gap is
The type face radian difference value of covering and theoretical covering after metal plate drawing and forming.
As preferred：The step（3）Specially：
（31）The part shape three-dimensional modeling processed as needed, according to modeling understand part theoretical coordinate parameter and
The vacuum suction tooling of design matching bent plate, the vacuum suction tooling adsorptive pressure are not less than 0.08MPa；
（32）Part is clamped, bores lightening hole, discharges folding stress；
（33）It works out roughing program and roughing is carried out to product, process grid, it is whole to remove 8mm materials；Under reprocessing
Fall into region, cutting-in 3mm.
As preferred：The step（5）Specially：
（51）By part subregion, semifinishing program is worked out, semifinishing is carried out to single region；
（52）Characteristic point is determined according to the theoretical coordinate of part, each grid corresponds to a characteristic point, and Renishaw Probes exist
Line carries out characteristic point position measurement, feeds back measured value；
（53）Processing is compensated according to feeding back to；
（54）Expand lightening hole, be machined to actual demand size；
（55）Surrounding excess stock is cut out according to covering concrete structure.
As preferred：The roughing is specially：
The first step：First time roughing, cutting-in 4mm, side wall surplus 0.5mm；Three adjacent mesh are cut, measure transverse bar
With the developed width of diagonal bar, after confirming that developed width and molded breadth are errorless, from center around, clockwise with replacing counterclockwise
Diffusion；
Second step：Second of roughing, cutting-in 4mm, side wall surplus 0.3mm add up to cutting-in 8mm with first time roughing,
First cut three adjacent mesh of the first step, measure the developed width of transverse bar and diagonal bar, confirm developed width and molded breadth without
After accidentally, from center around, clockwise with replacing diffusion counterclockwise, and cut track path is opposite with first time；
Third walks：Outer ring downset areas roughing, cutting-in 3mm.
As preferred：The Renishaw Probes on-line measurement concrete mode is：
The first step：The stylus of gauge head is navigated on the normal direction position of part, to eliminate cosine error when measuring；
Second step：It is measured by the high point contact piece surface of stylus, and will system be stored in by the coordinate value of side point
In variable；
Third walks：Actual coordinate and theoretical coordinate are fitted, calculating the technical solution of parameter that needs adjust is
It is such：Compared with prior art,
The advantage of the invention is that：From sheet-metal formed, parts fixation, numerical control five-axle process tool, cutting parameter, processing plan
Slightly and design is optimized in each process procedure such as destressing timeliness in the process.The achievement or method add zero to other housing machines
The production of part is equally applicable, on the one hand changes conservative single cutting strategy, using helical milling, imitates product quality and production
Rate is significantly improved, and a covering process-cycle shorten to 2 days；On the other hand, the intervention degree of operating personnel is reduced, is avoided
Human error improves covering and processes series-produced automation.
Description of the drawings
Fig. 1 is skin part illustraton of model of the present invention；
Fig. 2 is covering clamping machining sketch chart；
Cut track path when Fig. 3 is roughing；
Fig. 4 is Renishaw Probes on-line measurement schematic diagram.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings.
Embodiment 1：Referring to Fig. 1 to Fig. 4, one kind is included the following steps based on adaptive machining covering high-efficiency machining method：
（1）According to required skin part structure, number of planes milling is carried out, and make flat condition and bent plate to plank for selection
The hole for hoist of state；Wherein, number of planes milling specific process is：Make 4 holes for hoist, press fitting product, number milling four of tablet
Side, number milling one side, deburring, 4 lifting threaded holes for counting milling another side, bent plate processed；Tablet milling thickness is high by rib highest
Degree determines that 4 liftings threaded hole is located at 1/4 arc length and 3/4 arc length of bent plate state, the two positions can reduce zero
It is deformed in part hoisting process.Hole not milling is worn, and ensures that bent plate is air tight at the hole in vacuum suction milling.
The tablet milling thickness of siding according to rib maximum height, control entire slab-thickness difference in 0.15mm hereinafter, plus
During work plane, the suitable face milling cutters of diameter are selected according to the size of product, divide multilayer milling in place.Its depth cut
Degree and width, cutting speed need to be selected according to lathe, and usual cutting depth is not more than 1mm, it is ensured that Milling Force is true in product
In the range of empty adsorption capacity.
When using the vacuum cup of vacuum suction tooling for the first time, vacuum cup flatness detection need to be carried out, it is ensured that installation is adjusted
Vacuum cup 2.5m × 4m range plane degree after examination cannot such as reach within 0.05mm, then be reached using number of planes milling.
Before processing, the vacuum suction situation of product is detected in process at any time, in the case where ensuring product adsorbed state into
Row processing.
（2）According to the structure of vacuum suction tooling, the plank after logarithm milling carries out metal plate drawing and forming, can be bonded true
Empty adsorption tooling；Step（2）After middle metal plate drawing and forming, product type face need to pass through model Surface inspection, bus straight line degree, product
Taper detects, and within wherein model clearance control 1.5mm, within bus straight line degree 0.2mm, the model gap is stretched for metal plate
The type face radian difference value of covering after molding and theoretical covering；
（3）The part shape three-dimensional modeling processed as needed, and according to modeling, carried out using five axis gantry machining centers
Part rough milling processes grid and downset areas；Step（3）Specially：
（31）The part shape three-dimensional modeling processed as needed, according to modeling understand part theoretical coordinate parameter and
The vacuum suction tooling of design matching bent plate, the vacuum suction tooling adsorptive pressure are not less than 0.08MPa；The present invention uses
Part modeling, certain other software modeling are carried out under 3.0 CAM softwares of ProE Wildfire；
（32）Part is clamped, bores lightening hole, discharges folding stress；It bores lightening hole cutting parameter and can be found in the following table 1：
Table 1 bores lightening hole cutting parameter
（33）It works out roughing program and roughing is carried out to product, process grid, it is whole to remove 8mm materials；Under reprocessing
Fall into region, cutting-in 3mm；Specific method is as follows：
The first step：First time roughing, cutting-in 4mm, side wall surplus 0.5mm；Three adjacent mesh are cut, measure transverse bar
With the developed width of diagonal bar, after confirming that developed width and molded breadth are errorless, from center around, clockwise with replacing counterclockwise
Diffusion；To improve siding grid processing quality and processing efficiency, using helical milling path planning grid machining path；
Second step：Second of roughing, cutting-in 4mm, side wall surplus 0.3mm add up to cutting-in 8mm with first time roughing,
First cut three adjacent mesh of the first step, measure the developed width of transverse bar and diagonal bar, confirm developed width and molded breadth without
After accidentally, from center around, clockwise with replacing diffusion counterclockwise, and cut track path is opposite with first time.
Third walks：Outer ring downset areas roughing, cutting-in 3mm.The corresponding parameter of downset areas roughing can refer to the following table 2：
2 downset areas roughing cutting parameter of table
（4）According to raw material difference, the aging strengthening model of specification is carried out；
（5）With reference to Renishaw Probes on-line measurement, subregional finish-milling is carried out to part using five axis gantry machining centers
Processing；The semifinishing in single region --- measurement --- is namely divided to finish, and needs to complete in primary absorption on the same day.Step
Suddenly（5）Specially：
（51）By part subregion, semifinishing program is worked out, semifinishing is carried out to single region；
Semifinishing：Choose row's grid, side wall surplus 0.12, cutting-in 1mm, establishment semifinishing program survey in each region
Examination processing；Transverse bar, diagonal bar width and the wall thickness after processing are measured, after confirming that every muscle size is errorless, works out semifinishing journey
Sequence.The first grid that semifinishing goes out is carried out all to measure verification, continues to process after confirmation is errorless.Semifinishing parameter can join
It examines as follows：
3 semifinishing cutting parameter of table
（4）According to raw material difference, the aging strengthening model of specification is carried out；
（5）With reference to Renishaw Probes on-line measurement, subregional finish-milling is carried out to part using five axis gantry machining centers
Processing；The semifinishing in single region --- measurement --- is namely divided to finish, and needs to complete in primary absorption on the same day.Step
Suddenly（5）Specially：
（51）By part subregion, semifinishing program is worked out, semifinishing is carried out to single region；
Semifinishing：Choose row's grid, side wall surplus 0.12, cutting-in 1mm, establishment semifinishing program survey in each region
Examination processing；Transverse bar, diagonal bar width and the wall thickness after processing are measured, after confirming that every muscle size is errorless, works out semifinishing journey
Sequence.The first grid that semifinishing goes out is carried out all to measure verification, continues to process after confirmation is errorless.Semifinishing parameter can join
It examines as follows：
3 semifinishing cutting parameter of table
（52）Characteristic point is determined according to the theoretical coordinate of part, each grid corresponds to a characteristic point, and Renishaw Probes exist
Line carries out characteristic point position measurement, feeds back measured value, that is, above-mentioned measuring process；The Renishaw Probes on-line measurement is specific
Mode is：
The first step：The stylus of gauge head is navigated on the normal direction position of part, to eliminate cosine error when measuring；
Second step：It is measured by the high point contact piece surface of stylus, and will system be stored in by the coordinate value of side point
In variable；
Third walks：Actual coordinate and theoretical coordinate are fitted, calculate the parameter for needing to adjust.
（53）Processing is compensated, that is, above-mentioned finishing step according to feeding back to；
（54）Expand lightening hole, be machined to actual demand size；The corresponding cutting parameter of reaming can refer to as follows：
Cutting parameter is processed in 4 reaming of table
（55）Surrounding excess stock is cut out according to covering concrete structure, cut off corresponding cutting parameter can refer to it is as follows：
5 cutting off processing cutting parameter of table
（6）Piece surface anodization.
The method that covering is processed with the present invention, very efficiently, from sheet-metal formed, parts fixation, numerical control five-axle in the present invention
Process tool, cutting parameter, Processing Strategies and design is optimized in each process procedure such as destressing timeliness in the process.This into
Fruit or method are equally applicable to the production of other housing machine-made spares.
Semifinishing --- measurement --- finishing can be completed in one day, and the cutter path of grid processing uses helical milling road
Diameter plan grid machining path, and clockwise, counterclockwise alternately.On the one hand conservative single cutting strategy is changed, adopted
With helical milling, product quality and production efficiency is made to be significantly improved, a covering process-cycle shorten to 2 days.
On the other hand, the intervention degree of operating personnel is reduced, avoids human error, it is series-produced to improve covering processing
Automation.
Claims (5)
1. one kind is based on adaptive machining covering high-efficiency machining method, it is characterised in that：Include the following steps：
（1）According to required skin part structure, number of planes milling is carried out, and make flat condition and bent plate state to plank for selection
Hole for hoist；
（2）According to the structure of vacuum suction tooling, the plank after logarithm milling carries out metal plate drawing and forming, can be bonded vacuum suction
Attached tooling；
（3）The part shape three-dimensional modeling processed as needed, and according to modeling, part is carried out using five axis gantry machining centers
Rough milling processes grid and downset areas；
（4）According to raw material difference, the aging strengthening model of specification is carried out；
（5）With reference to Renishaw Probes on-line measurement, subregional finish-milling processing is carried out to part using five axis gantry machining centers；
（6）Piece surface anodization；
The step（3）Specially：
（31）The part shape three-dimensional modeling processed as needed understands the theoretical coordinate parameter and design of part according to modeling
The vacuum suction tooling of bent plate is matched, the vacuum suction tooling adsorptive pressure is not less than 0.08MPa；
（32）Part is clamped, bores lightening hole, discharges folding stress；
（33）It works out roughing program and roughing is carried out to product, process grid, it is whole to remove 8mm materials；Reprocess bogging down area
Domain, cutting-in 3mm；
The roughing is specially：
The first step：First time roughing, cutting-in 4mm, side wall surplus 0.5mm；Cut three adjacent mesh, measure transverse bar with tiltedly
The developed width of muscle, after confirming that developed width and molded breadth are errorless, from center around, clockwise with replacing expansion counterclockwise
It dissipates；
Second step：Second of roughing, cutting-in 4mm, side wall surplus 0.3mm add up to cutting-in 8mm with first time roughing, first cut
Three adjacent mesh of the first step are cut, measure the developed width of transverse bar and diagonal bar, after confirming that developed width and molded breadth are errorless,
From center around, clockwise with replacing diffusion counterclockwise, and cut track path is opposite with first time；
Third walks：Outer ring downset areas roughing, cutting-in 3mm.
2. according to claim 1 be based on adaptive machining covering high-efficiency machining method, it is characterised in that：The step
（1）In, number of planes milling specific process is：Make tablet 4 holes for hoist, press fitting product, number milling four directions, number milling one side,
Deburring, 4 lifting threaded holes for counting milling another side, bent plate processed；Tablet milling thickness determines by rib maximum height, described 4
A lifting threaded hole is located at 1/4 arc length and 3/4 arc length of bent plate state, and hole not milling is worn.
3. according to claim 1 be based on adaptive machining covering high-efficiency machining method, it is characterised in that：Step（2）In
After metal plate drawing and forming, product type face need to pass through model Surface inspection, bus straight line degree, the wherein detection of product taper, model room
Within gap control 1.5mm, within bus straight line degree 0.2mm, the model gap is the covering after metal plate drawing and forming and theory
The type face radian difference value of covering.
4. according to claim 1 be based on adaptive machining covering high-efficiency machining method, it is characterised in that：The step
（5）Specially：
（51）By part subregion, semifinishing program is worked out, semifinishing is carried out to single region；
（52）Characteristic point is determined according to the theoretical coordinate of part, each grid corresponds to a characteristic point, Renishaw Probes online into
Row characteristic point position measures, and feeds back measured value；
（53）Processing is compensated according to feeding back to；
（54）Expand lightening hole, be machined to actual demand size；
（55）Surrounding excess stock is cut out according to covering concrete structure.
5. according to claim 1 be based on adaptive machining covering high-efficiency machining method, it is characterised in that：The Reinshaw
Gauge head on-line measurement concrete mode is：
The first step：The stylus of gauge head is navigated on the normal direction position of part, to eliminate cosine error when measuring；
Second step：It is measured by the high point contact piece surface of stylus, and will system variable be stored in by the coordinate value of side point
In；
Third walks：Actual coordinate and theoretical coordinate are fitted, calculate the parameter for needing to adjust.
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| CN114789326B (en) * | 2022-06-01 | 2023-06-27 | 沈阳飞机工业（集团）有限公司 | Processing method of large-sized front edge skin part |
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| CA2242478A1 (en) * | 1997-08-18 | 1999-02-18 | Weirton Steel Corporation | Improved weatherproofing for sheet metal roofing |
| US20080159870A1 (en) * | 2006-12-14 | 2008-07-03 | Hontek Corporation | Method and coating for protecting and repairing an airfoil surface using molded boots, sheet or tape |
| CN102295267B (en) * | 2011-07-11 | 2014-04-23 | 清华大学 | Manufacturing method of flexible MEMS (micro electro-mechanical system) anti-drag skin |
| CN105880918A (en) * | 2014-05-16 | 2016-08-24 | 哈尔滨飞机工业集团有限责任公司 | Composite material skin digital manufacture method |
| CN104259774B (en) * | 2014-09-09 | 2017-02-15 | 黄河科技学院 | Plane wing titanium alloy thin-wall web efficient numerical control machining technology |
| CN104972282A (en) * | 2015-07-15 | 2015-10-14 | 江西洪都航空工业集团有限责任公司 | Method for machining aircraft skin part |
| CN105033585A (en) * | 2015-08-03 | 2015-11-11 | 江西洪都航空工业集团有限责任公司 | Double-curved-surface sawtooth skin manufacturing method capable of controlling gap clearance precisely |
| CN105397423B (en) * | 2015-12-09 | 2017-06-20 | 北京航星机器制造有限公司 | The manufacture method of the large thin-wall covering with interior muscle and complex-shaped surface mould |
| CN105436833B (en) * | 2015-12-23 | 2017-09-19 | 北京航星机器制造有限公司 | A kind of precision manufactureing method of external belt rib skin part |
| CN105904161B (en) * | 2016-05-24 | 2017-11-24 | 湖北三江航天红阳机电有限公司 | A kind of bipyramid rhombus titanium alloy entirety bay section manufacture method |
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Address after: 610000 Sichuan Chengdu economic and Technological Development Zone (Longquanyi District) 189 Applicant after: Sichuan spaceflight Long March Equipment Manufacturing Co., Ltd. Address before: 610199 No. 189, road, Longquan Town, Longquanyi District, Sichuan. Applicant before: Changzheng Machinery Factory, China Astronautics Science and Technology Group Co |
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Granted publication date: 20180619 Termination date: 20190908 |