CN106216966A - Based on adaptive machining eyelid covering high-efficiency machining method - Google Patents
Based on adaptive machining eyelid covering high-efficiency machining method Download PDFInfo
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- CN106216966A CN106216966A CN201610711964.6A CN201610711964A CN106216966A CN 106216966 A CN106216966 A CN 106216966A CN 201610711964 A CN201610711964 A CN 201610711964A CN 106216966 A CN106216966 A CN 106216966A
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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 a kind of based on adaptive machining eyelid covering high-efficiency machining method, including (1) number of planes milling；(2) panel beating drawing and forming so that it is vac sorb frock of fitting；(3) five axle gantry machining centers are used to carry out the rough milling of part；(4) aging strengthening model；(5) combine Renishaw Probes on-line measurement, use five axle gantry machining centers that part carries out subregional finish-milling processing；(6) piece surface anodization.The present invention from sheet-metal formed, parts fixation, numerical control five-axle process tool, cutting parameter, Processing Strategies and during each process procedure such as destressing timeliness be optimized design, on the one hand conservative single cutting strategy is changed, use helical milling, making product quality and production efficiency be significantly improved, an eyelid covering process-cycle shortens to 2 days；On the other hand, reduce the intervention degree of operator, it is to avoid human error, improve eyelid covering and process series-produced automatization.
Description
Technical field
The present invention relates to a kind of eyelid covering reinforced structure part high-quality high-efficiency machining method, particularly relate to a kind of based on adaptive
Eyelid covering high-efficiency machining method should be processed.
Background technology
Aluminum alloy outer cover thin-wall construction designs, and is generally added grid system by machine after integral Al-alloy pretensioning plate drawing and forming
Become.This kind of design, can effectively control product weight, increases payload, substantially reduces number of parts, connection is greatly reduced
Assembly work amount, detail rigidity, fatigue resistance and various unstability marginal value are all substantially improved compared with riveted structure simultaneously,
But correspondingly the machining of part is had higher requirement.Owing to inner mesh is many, wall is thin and wall thickness dimension is different, logical
Often material-removal rate reaches more than 70%.
Eyelid covering inner mesh processing at present still uses tradition five-shaft high-speed Milling Machine to add flow process, roughing, semifinishing, essence
Separately, the cutter path of grid processing uses traditional row to cut and revolution mode, and Milling Speed is unable to reach ideal, part in processing
There is moderate finite deformation in the course of processing, before polish, interiors of products grid eyelid covering wall thickness needs to carry out manual individually detection, according to inspection
Surveying result and carry out the adjustment processing of single grid cutter compensation, the production debugging cycle is longer, about 4 ~ 5 days eyelid covering process-cycle.
The technological process of traditional processing proposal is the most loaded down with trivial details, and the technological preparation cycle is long.Secondly as interiors of products exists relatively
Many grids, inevitably there will be substantial amounts of corner, the cutter rail of such part die cavity existing processing in NC Machining Process
Mark uses traditional row to cut and revolution mode, is not suitable with high-rate wireless LAN, makes to be in all the time during machine tool processing corner
Acceleration and deceleration state, when causing grid processing in lathe, most of the time lathe is all in speed-change process, and product cutting power is unstable,
The stability of lathe and efficiency all cannot ensure；3rd, use traditional-handwork detection, detection quality record to rely primarily on workman's skill
Energy, experience and responsibility ensure, and it is big to detect workload, and the time cycle is long；Finally, due to material removing rate is big, product zero
Part easily produces a large amount of deformation, causes part profile to change greatly, and is unfavorable for that subsequent product assembling uses.
Summary of the invention
The purpose of the present invention is that offer one solves the problems referred to above, deposits during mainly solving current thin-walled workpiece
Quality problems, use drawing and forming mode, at a high speed, spiral five-axis milling reduce cutting force and vibration, and at pilot process
Middle increase heat aging PROCESS FOR TREATMENT, reduces the cutting deformation of thin-wall part, promote working (machining) efficiency and surface quality based on self adaptation
Processing eyelid covering high-efficiency machining method.
To achieve these goals, the technical solution used in the present invention is such that a kind of based on adaptive machining eyelid covering
High-efficiency machining method, comprises the following steps:
(1) selection, according to required skin part structure, carries out number of planes milling, and makes flat condition and bent plate state sheet material
Hole for hoist；
(2) according to the structure of vac sorb frock, the sheet material after logarithm milling carries out panel beating drawing and forming so that it is vacuum of fitting is inhaled
Attached frock；
(3) the part shape three-dimensional modeling processed as required, and according to modeling, use five axle gantry machining centers to carry out part
Rough milling, processing grid and downset areas；
(4) different according to raw material, carry out the aging strengthening model of specification；
(5) combine Renishaw Probes on-line measurement, use five axle gantry machining centers that part carries out subregional finish-milling processing；
(6) piece surface anodization.
As preferably: in described step (1), number of planes milling specific process is: make 4 holes for hoist, pressures of flat board
Dress product, number milling four directions, number milling one side, deburring, number milling another side, 4 lifting screwed holes of bent plate processed；Flat board milling thickness
Determining by rib maximum height, described 4 lifting screwed holes are positioned at 1/4 arc length and 3/4 arc length of bent plate state, hole not milling
Wear.
As preferably: in step (2) after panel beating drawing and forming, product profile need to be through model Surface inspection, bus straight line
The detection of degree, product tapering, wherein within model clearance control 1.5mm, within bus linearity 0.2mm, described model gap is
Eyelid covering after panel beating drawing and forming and the profile radian difference value of theoretical eyelid covering.
As preferably: described step (3) particularly as follows:
(31) the part shape three-dimensional modeling processed as required, understands theoretical coordinate parameter and the design of part according to modeling
The vac sorb frock of coupling bent plate, described vac sorb frock adsorptive pressure is not less than 0.08MPa；
(32) clamp part, bore lightening core, discharge folding stress；
(33) establishment roughing program carries out roughing to product, processes grid, and whole removing removes 8mm material；Reprocessing bogging down area
Territory, cutting-in 3mm.
As preferably: described step (5) particularly as follows:
(51) by part subregion, work out semifinishing program, single region is carried out semifinishing；
(52) determining characteristic point according to the theoretical coordinate of part, the corresponding characteristic point of each grid, Renishaw Probes enters online
Row characteristic point position is measured, and feeds back measured value；
(53) according to feeding back to compensate processing；
(54) expand lightening core, be machined to actual demand size；
(55) surrounding excess stock is cut out according to eyelid covering concrete structure.
As preferably: described roughing particularly as follows:
The first step: roughing for the first time, cutting-in 4mm, sidewall surplus 0.5mm；Cut three adjacent mesh, measure horizontal bar with oblique
The developed width of muscle, after confirming that developed width and molded breadth are errorless, from center to surrounding, alternately expands with counterclockwise clockwise
Dissipate；
Second step: roughing for the second time, cutting-in 4mm, sidewall surplus 0.3mm, add up to cutting-in 8mm with first time roughing, first cut
Cut three adjacent mesh of the first step, measure the developed width of horizontal bar and diagonal bar, after confirming that developed width and molded breadth are errorless,
From center to surrounding, clockwise with the most alternately diffusion, and cut track path is with the most contrary；
3rd step: outer ring downset areas roughing, cutting-in 3mm.
As preferably: the described concrete mode of Renishaw Probes on-line measurement is:
The first step: navigated to by the chaining pin of gauge head on the normal direction position of part, to eliminate cosine error when measuring；
Second step: measured by chaining pin height point cantact piece surface, and system variable will be stored in by the coordinate figure of side point
In；
3rd step: actual coordinate and theoretical coordinate are fitted, the technical scheme calculating the parameter needing adjustment is so
: compared with prior art,
It is an advantage of the current invention that: from sheet-metal formed, parts fixation, numerical control five-axle process tool, cutting parameter, Processing Strategies and
During each process procedure such as destressing timeliness be optimized design.This achievement or method are to other housing machine-made spares
Produce equally applicable, on the one hand change conservative single cutting strategy, use helical milling, make product quality and production efficiency obtain
To significantly improving, an eyelid covering process-cycle shortens to 2 days；On the other hand, the intervention degree of operator is reduced, it is to avoid people
For mistake, improve eyelid covering and process series-produced automatization.
Accompanying drawing explanation
Fig. 1 is skin part illustraton of model of the present invention；
Fig. 2 is eyelid covering clamping machining sketch chart；
Fig. 3 is cut track path during roughing；
Fig. 4 is Renishaw Probes on-line measurement schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
Embodiment 1: see Fig. 1 to Fig. 4, a kind of based on adaptive machining eyelid covering high-efficiency machining method, comprise the following steps:
(1) selection, according to required skin part structure, carries out number of planes milling, and makes flat condition and bent plate state sheet material
Hole for hoist；Wherein, number of planes milling specific process is: makes 4 holes for hoist of flat board, press-fit product, number milling four directions, number
Milling one side, deburring, number milling another side, 4 lifting screwed holes of bent plate processed；It is true that flat board milling thickness presses rib maximum height
Fixed, described 4 lifting screwed holes are positioned at 1/4 arc length and 3/4 arc length of bent plate state, and the two position can be reduced part and be hung
Process of assembling deforms.Hole not milling is worn, it is ensured that bent plate is air tight at this hole when vac sorb milling.
The flat board milling thickness of wallboard, according to rib maximum height, controls whole slab-thickness difference at below 0.15mm, adds
During work plane, selecting the suitable face milling cutters of diameter according to the size of product, a point multilamellar milling puts in place.It is deep that it cuts
Degree and width, cutting speed need to select according to lathe, and usual cutting depth is not more than 1mm, it is ensured that Milling Force is true at product
In the range of empty absorption affinity.
When using the vacuum cup of vac sorb frock first, vacuum cup flatness detection need to be carried out, it is ensured that install and adjust
Vacuum cup 2.5m after examination × 4m range plane degree is within 0.05mm, as do not reached, then uses number of planes milling to reach.
Before processing, the course of processing detects the vac sorb situation of product at any time, enter under guaranteeing product adsorbed state
Row processing.
(2) according to the structure of vac sorb frock, the sheet material after logarithm milling carries out panel beating drawing and forming so that it is can fit true
Empty adsorption tooling；In step (2) after panel beating drawing and forming, product profile need to be through model Surface inspection, bus linearity, product
Tapering detects, and wherein within model clearance control 1.5mm, within bus linearity 0.2mm, described model gap is panel beating stretching
Eyelid covering after molding and the profile radian difference value of theoretical eyelid covering；
(3) the part shape three-dimensional modeling processed as required, and according to modeling, use five axle gantry machining centers to carry out part
Rough milling, processing grid and downset areas；Step (3) particularly as follows:
(31) the part shape three-dimensional modeling processed as required, understands theoretical coordinate parameter and the design of part according to modeling
The vac sorb frock of coupling bent plate, described vac sorb frock adsorptive pressure is not less than 0.08MPa；The present invention uses ProE
Part modeling, certainly other software modelings are carried out under Wildfire 3.0 CAM software；
(32) clamp part, bore lightening core, discharge folding stress；Bore lightening core cutting parameter and can be found in table 1 below:
Table 1 bores lightening core cutting parameter
(33) establishment roughing program carries out roughing to product, processes grid, and whole removing removes 8mm material；Reprocessing bogging down area
Territory, cutting-in 3mm；Concrete grammar is as follows:
The first step: roughing for the first time, cutting-in 4mm, sidewall surplus 0.5mm；Cut three adjacent mesh, measure horizontal bar with oblique
The developed width of muscle, after confirming that developed width and molded breadth are errorless, from center to surrounding, alternately expands with counterclockwise clockwise
Dissipate；For improving wallboard grid crudy and working (machining) efficiency, use helical milling path planning grid machining path；
Second step: roughing for the second time, cutting-in 4mm, sidewall surplus 0.3mm, add up to cutting-in 8mm with first time roughing, first cut
Cut three adjacent mesh of the first step, measure the developed width of horizontal bar and diagonal bar, after confirming that developed width and molded breadth are errorless,
From center to surrounding, clockwise with the most alternately diffusion, and cut track path is with the most contrary.
3rd step: outer ring downset areas roughing, cutting-in 3mm.Parameter corresponding to downset areas roughing refers to following table
2:
Table 2 downset areas roughing cutting parameter
(4) different according to raw material, carry out the aging strengthening model of specification；
(5) combine Renishaw Probes on-line measurement, use five axle gantry machining centers that part carries out subregional finish-milling processing；
The semifinishing namely dividing single region completes in measuring polish, and need primary sorption on the same day.Step (5)
Particularly as follows:
(51) by part subregion, work out semifinishing program, single region is carried out semifinishing；
Semifinishing: row's grid, sidewall surplus 0.12, cutting-in 1mm are chosen in each region, and establishment semifinishing program test adds
Work；Measure the horizontal bar after processing, diagonal bar width and wall thickness, after confirming that every muscle size is errorless, work out semifinishing program.Right
The first grid that semifinishing goes out all measures verification, confirm errorless after continue processing.Semifinishing parameter refer to as
Under:
Table 3 semifinishing cutting parameter
(4) different according to raw material, carry out the aging strengthening model of specification；
(5) combine Renishaw Probes on-line measurement, use five axle gantry machining centers that part carries out subregional finish-milling processing；
The semifinishing namely dividing single region completes in measuring polish, and need primary sorption on the same day.Step (5)
Particularly as follows:
(51) by part subregion, work out semifinishing program, single region is carried out semifinishing；
Semifinishing: row's grid, sidewall surplus 0.12, cutting-in 1mm are chosen in each region, and establishment semifinishing program test adds
Work；Measure the horizontal bar after processing, diagonal bar width and wall thickness, after confirming that every muscle size is errorless, work out semifinishing program.Right
The first grid that semifinishing goes out all measures verification, confirm errorless after continue processing.Semifinishing parameter refer to as
Under:
Table 3 semifinishing cutting parameter
(52) determining characteristic point according to the theoretical coordinate of part, the corresponding characteristic point of each grid, Renishaw Probes enters online
Row characteristic point position is measured, and feeds back measured value, the most above-mentioned measuring process；The described concrete mode of Renishaw Probes on-line measurement
For:
The first step: navigated to by the chaining pin of gauge head on the normal direction position of part, to eliminate cosine error when measuring；
Second step: measured by chaining pin height point cantact piece surface, and system variable will be stored in by the coordinate figure of side point
In；
3rd step: actual coordinate and theoretical coordinate are fitted, calculates the parameter needing to adjust.
(53) according to feeding back to compensate processing, the most above-mentioned finishing step；
(54) expand lightening core, be machined to actual demand size；Cutting parameter corresponding to reaming refers to as follows:
Table 4 reaming processing cutting parameter
(55) cut out surrounding excess stock according to eyelid covering concrete structure, cut off corresponding cutting parameter and refer to as follows:
Table 5 cuts off processing cutting parameter
(6) piece surface anodization.
The method processing eyelid covering by the present invention, the most efficiently, from sheet-metal formed, parts fixation, numerical control five-axle in the present invention
Process tool, cutting parameter, Processing Strategies and during each process procedure such as destressing timeliness be optimized design.This one-tenth
Fruit or method are equally applicable to the production of other housing machine-made spares.
Semifinishing is measured polish and can be completed in one day, and the cutter path of grid processing uses helical milling road
Footpath planning grid machining path, and clockwise, the most alternately.On the one hand change conservative single cutting strategy, adopt
With helical milling, making product quality and production efficiency be significantly improved, an eyelid covering process-cycle shortens to 2 days.
On the other hand, reduce the intervention degree of operator, it is to avoid human error, improve eyelid covering processing series-produced
Automatization.
Claims (7)
1. one kind based on adaptive machining eyelid covering high-efficiency machining method, it is characterised in that: comprise the following steps:
(1) selection, according to required skin part structure, carries out number of planes milling, and makes flat condition and bent plate state sheet material
Hole for hoist；
(2) according to the structure of vac sorb frock, the sheet material after logarithm milling carries out panel beating drawing and forming so that it is vacuum of fitting is inhaled
Attached frock；
(3) the part shape three-dimensional modeling processed as required, and according to modeling, use five axle gantry machining centers to carry out part
Rough milling, processing grid and downset areas；
(4) different according to raw material, carry out the aging strengthening model of specification；
(5) combine Renishaw Probes on-line measurement, use five axle gantry machining centers that part carries out subregional finish-milling processing；
(6) piece surface anodization.
It is the most according to claim 1 based on adaptive machining eyelid covering high-efficiency machining method, it is characterised in that: described step
(1), in, number of planes milling specific process is: make flat board 4 holes for hoist, press-fit product, number milling four directions, number milling one side,
Deburring, number milling another side, 4 lifting screwed holes of bent plate processed；Flat board milling thickness is determined by rib maximum height, described 4
Individual lifting screwed hole is positioned at 1/4 arc length and 3/4 arc length of bent plate state, and hole not milling is worn.
It is the most according to claim 1 based on adaptive machining eyelid covering high-efficiency machining method, it is characterised in that: in step (2)
After panel beating drawing and forming, product profile need to be through model Surface inspection, bus linearity, the detection of product tapering, wherein model room
Within gap controls 1.5mm, within bus linearity 0.2mm, described model gap is that the eyelid covering after panel beating drawing and forming is with theoretical
The profile radian difference value of eyelid covering.
It is the most according to claim 1 based on adaptive machining eyelid covering high-efficiency machining method, it is characterised in that: described step
(3) particularly as follows:
(31) the part shape three-dimensional modeling processed as required, understands theoretical coordinate parameter and the design of part according to modeling
The vac sorb frock of coupling bent plate, described vac sorb frock adsorptive pressure is not less than 0.08MPa；
(32) clamp part, bore lightening core, discharge folding stress；
(33) establishment roughing program carries out roughing to product, processes grid, and whole removing removes 8mm material；Reprocessing bogging down area
Territory, cutting-in 3mm.
It is the most according to claim 4 based on adaptive machining eyelid covering high-efficiency machining method, it is characterised in that: described step
(5) particularly as follows:
(51) by part subregion, work out semifinishing program, single region is carried out semifinishing；
(52) determining characteristic point according to the theoretical coordinate of part, the corresponding characteristic point of each grid, Renishaw Probes enters online
Row characteristic point position is measured, and feeds back measured value；
(53) according to feeding back to compensate processing；
(54) expand lightening core, be machined to actual demand size；
(55) surrounding excess stock is cut out according to eyelid covering concrete structure.
It is the most according to claim 4 based on adaptive machining eyelid covering high-efficiency machining method, it is characterised in that: described roughing
Particularly as follows:
The first step: roughing for the first time, cutting-in 4mm, sidewall surplus 0.5mm；Cut three adjacent mesh, measure horizontal bar with oblique
The developed width of muscle, after confirming that developed width and molded breadth are errorless, from center to surrounding, alternately expands with counterclockwise clockwise
Dissipate；
Second step: roughing for the second time, cutting-in 4mm, sidewall surplus 0.3mm, add up to cutting-in 8mm with first time roughing, first cut
Cut three adjacent mesh of the first step, measure the developed width of horizontal bar and diagonal bar, after confirming that developed width and molded breadth are errorless,
From center to surrounding, clockwise with the most alternately diffusion, and cut track path is with the most contrary；
3rd step: outer ring downset areas roughing, cutting-in 3mm.
It is the most according to claim 1 based on adaptive machining eyelid covering high-efficiency machining method, it is characterised in that: described Reinshaw
The concrete mode of gauge head on-line measurement is:
The first step: navigated to by the chaining pin of gauge head on the normal direction position of part, to eliminate cosine error when measuring；
Second step: measured by chaining pin height point cantact piece surface, and system variable will be stored in by the coordinate figure of side point
In；
3rd step: actual coordinate and theoretical coordinate are fitted, calculates the parameter needing to adjust.
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| CN108857294A (en) * | 2018-09-14 | 2018-11-23 | 诸暨市碧涵精工模塑有限公司 | A method of making grid line on bend pipe arc surface |
| CN109454406A (en) * | 2018-10-29 | 2019-03-12 | 首都航天机械有限公司 | The tubular siding numerical-control processing method of grid in a kind of band |
| CN112247481A (en) * | 2020-09-22 | 2021-01-22 | 成都鑫三合机电新技术开发有限公司 | Machining method for aviation composite material parts |
| CN112171198A (en) * | 2020-09-24 | 2021-01-05 | 中国航发贵州黎阳航空动力有限公司 | Machining method of grid structure part |
| CN113059322A (en) * | 2021-03-26 | 2021-07-02 | 陕西飞机工业有限责任公司 | Variable-thickness frame edge processing method |
| CN114406326A (en) * | 2022-03-28 | 2022-04-29 | 西安兴航航空科技股份有限公司 | Novel processing technology of aircraft skin |
| CN114789326A (en) * | 2022-06-01 | 2022-07-26 | 沈阳飞机工业（集团）有限公司 | Machining method of large-scale front edge skin part |
| 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 |
| CN114714151A (en) * | 2022-06-09 | 2022-07-08 | 成都飞机工业（集团）有限责任公司 | Method, device and equipment for planning measurement point positions of web and storage medium |
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