CN104476118A - Manufacturing method of airplane chemical milling skin three-dimensional chemical milling sample plate - Google Patents
Manufacturing method of airplane chemical milling skin three-dimensional chemical milling sample plate Download PDFInfo
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- CN104476118A CN104476118A CN201410610734.1A CN201410610734A CN104476118A CN 104476118 A CN104476118 A CN 104476118A CN 201410610734 A CN201410610734 A CN 201410610734A CN 104476118 A CN104476118 A CN 104476118A
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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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- 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
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/01—Aircraft parts
Abstract
The invention belongs to the technical field of chemical milling, and relates to improvement of a manufacturing method of a large-sized airplane chemical milling skin three-dimensional chemical milling sample plate. The method is characterized in that the three-dimensional chemical milling sample plate is manufactured through the following steps: establishing a standard sample board technological digital-analog data set; manufacturing a standard sample board; establishing a chemical milling sample template technological digital-analog data set; manufacturing the three-dimensional chemical milling sample board. According to the improved manufacturing method of the airplane chemical milling skin three-dimensional chemical milling sample plate, the dimensional error of a perspective hole in the three-dimensional chemical milling sample plate can be greatly reduced, and the mold scribing accuracy and the sample plate forming accuracy are improved, so that the dimensional accuracy of the airplane chemical milling skin is guaranteed.
Description
Technical field
The invention belongs to chemistry milling technical field, relate to the improvement to large aircraft milling covering chemical milling template manufacture method.
Background technology
In airplane parts manufacture process, according to the requirement of aircraft gross mass and intensity, there are a large amount of equal thickness or Varying-thickness and there is single-curved surface or bi-curved covering class part, all needing to carry out chemistry milling, to meet the loss of weight requirement of aircraft.Chemistry milling is a kind of without cutting element, special cutting method without tool marks; the surface of processing is needed to expose part; the surface corrosion-resistant finishes do not processed is protected; part is immersed in chemical solution and corrodes; the metal of working position is dissolved by selected dimensional requirement remove, reach the object of milling processing parts.The effect of three-dimensional chemical milling template is: by chemical milling template determination part lumarith needing the region contour line delineated; namely determine part to allow corrosive liquid effect and do not allow the region of corrosive liquid effect; not allowing the region coating protective material of corrosive liquid effect, then part being put into milling groove and carrying out milling processing.The manufacture method of current aircraft milling covering chemical milling template is: in the design traditional method of indicating the pronunciation of a Chinese character, model manufactures mould tire, again milling figure is manually carved shape, then aircraft milling covering full pattern is manufactured according to mould tire, through assemble qualified after, this aircraft milling covering full pattern is outputed perspective mouth, uses as three-dimensional chemical milling template.Its shortcoming is: the scale error of the perspective mouth on three-dimensional chemical milling template is large, make mould tire rule precision and model formed precision poor, after causing milling processing, the dimensional accuracy of aircraft milling covering can not meet the demands.Its reason is: the large and manual error of carving shape of mould tire forming errors, causes the mismachining tolerance of three-dimensional chemical milling template large.
Summary of the invention
The object of the invention is: the aircraft milling covering chemical milling template manufacture method proposing a kind of improvement, to reduce the scale error of three-dimensional chemical milling template being had an X-rayed mouth, improve mould tire line precision and model formed precision, thus ensure the dimensional accuracy of aircraft milling covering.
Technical scheme of the present invention is: the manufacture method of the three-dimensional chemical milling template of aircraft milling covering, the inner surface of aircraft milling covering 1 there is the non-milling part formed between groove 2 and groove 2 through milling form rib 3, it is characterized in that: the step manufacturing three-dimensional chemical milling template is as follows:
1, Criterion model technology digital-to-analogue data set: according to the mathematical model of aircraft milling covering, use CATIA software, adopt digital-to-analogue profile to the thick method of bias internal aircraft milling covering material, Criterion model technology digital-to-analogue data set, in standard jig technique digital-to-analogue data centralization, open except the milling locator tabs 6 becoming perspective mouth 5 and be provided with locating hole on the quadrangular configuration edge of aircraft milling covering and the assembling and positioning auricle 7 being provided with locating hole except aircraft milling covering being needed the groove 2 of milling along normal direction, remaining data is identical with the mathematical model of aircraft milling covering, milling locator tabs is arranged on the lateral edges that aircraft milling covering stretches along long limit, the quantity of milling locator tabs 6 is 2 ~ 6, uniform along this edge, assembling and positioning auricle 7 is arranged on aircraft milling covering along on the both sides of the edge that broadside stretches, every lateral edges arranges 1 assembling and positioning auricle,
2, manufacturer's standard model:
2.1, aircraft milling covering blank is drawn into type on pull-up mould, makes the profile of aircraft milling covering blank, meet the requirement of aircraft milling covering mathematical model;
2.2, by the computer of standard jig technique digital-to-analogue data set input Five Axis CNC milling machine, digital control processing is carried out to the aircraft milling covering blank of band profile, obtains standard jig 4;
3, set up three-dimensional milling model technology digital-to-analogue data set: establishing criteria model technology digital-to-analogue data set, use CATIA software, set up three-dimensional milling model technology digital-to-analogue data set, in three-dimensional milling model technology digital-to-analogue data centralization, the quantity of perspective mouth 8 is identical with the quantity of the perspective mouth 5 of standard jig technique digital-to-analogue data centralization and position is corresponding, the quantity of the milling locator tabs 6 of chemical milling template technique digital-to-analogue data centralization, the quantity of the milling locator tabs 6 of position and size and standard jig technique digital-to-analogue data centralization, position and measure-alike, the quantity of the assembling and positioning auricle 7 of chemical milling template technique digital-to-analogue data centralization, the quantity of the assembling and positioning auricle 7 of position and size and standard jig technique digital-to-analogue data centralization, position and measure-alike,
4, three-dimensional chemical milling template is manufactured:
4.1, thickness is adopted to be that the aluminium sheet of 1.5mm ~ 2mm manufactures three-dimensional chemical milling template, the overall size of three-dimensional milling master blank is identical with aircraft milling covering blank, three-dimensional milling master blank is drawn into type on pull-up mould, makes the profile of three-dimensional milling master blank meet the requirement of the mathematical model of aircraft milling covering;
4.2, by the computer of chemical milling template technique digital-to-analogue data set input Five Axis CNC milling machine, digital control processing is carried out to the three-dimensional milling master blank of band profile, obtains three-dimensional chemical milling template 9.
Advantage of the present invention is: the aircraft milling covering chemical milling template manufacture method proposing a kind of improvement, greatly can reduce the scale error of three-dimensional chemical milling template being had an X-rayed mouth, improve mould tire line precision and model formed precision, thus ensure that the dimensional accuracy of aircraft milling covering.One embodiment of the present of invention, prove through test, the scale error of three-dimensional chemical milling template being had an X-rayed mouth reduces more than 60% than existing method.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of aircraft milling of certain type large aircraft covering.The inner surface 1 of aircraft milling covering 1 there is the non-milling part formed between groove 2 and groove 2 through milling form rib 3.The groove 2 of the milling of aircraft shown in Fig. 1 covering is rectangular channel, a lot of groove 2 one-tenth matrix arrangement.Except the groove 2 of rectangle, the groove 2 of other aircraft milling covering also has other shape.The bottom land of groove 2 forms planar webs.
Fig. 2 is the structural representation of the standard jig of the milling of aircraft shown in Fig. 1 covering.Having an X-rayed mouth 5 in figure is the communicating structures needing groove 2 normal direction of milling to open on aircraft milling covering in Fig. 1 and formed.
Fig. 3 is the structural representation of the three-dimensional chemical milling template of the milling of aircraft shown in Fig. 1 covering.The quantity of having an X-rayed mouth 8 in figure is identical with the quantity of the perspective mouth 5 of standard jig technique digital-to-analogue data centralization and position is corresponding.
Detailed description of the invention
Below the present invention is described in further details.See Fig. 1 to Fig. 3, the manufacture method of the three-dimensional chemical milling template of aircraft milling covering, the inner surface of aircraft milling covering 1 there is the non-milling part formed between groove 2 and groove 2 through milling form rib 3, it is characterized in that: the step manufacturing three-dimensional chemical milling template is as follows:
1, Criterion model technology digital-to-analogue data set: according to the mathematical model of aircraft milling covering, use CATIA software, adopt digital-to-analogue profile to the thick method of bias internal aircraft milling covering material, Criterion model technology digital-to-analogue data set, in standard jig technique digital-to-analogue data centralization, open except the milling locator tabs 6 becoming perspective mouth 5 and be provided with locating hole on the quadrangular configuration edge of aircraft milling covering and the assembling and positioning auricle 7 being provided with locating hole except aircraft milling covering being needed the groove 2 of milling along normal direction, remaining data is identical with the mathematical model of aircraft milling covering, milling locator tabs is arranged on the lateral edges that aircraft milling covering stretches along long limit, the quantity of milling locator tabs 6 is 2 ~ 6, uniform along this edge, assembling and positioning auricle 7 is arranged on aircraft milling covering along on the both sides of the edge that broadside stretches, every lateral edges arranges 1 assembling and positioning auricle,
2, manufacturer's standard model:
2.1, aircraft milling covering blank is drawn into type on pull-up mould, makes the profile of aircraft milling covering blank, meet the requirement of aircraft milling covering mathematical model;
2.2, by the computer of standard jig technique digital-to-analogue data set input Five Axis CNC milling machine, digital control processing is carried out to the aircraft milling covering blank of band profile, obtains standard jig 4;
3, set up chemical milling template technique digital-to-analogue data set: establishing criteria model technology digital-to-analogue data set, use CATIA software, set up three-dimensional milling model technology digital-to-analogue data set, in three-dimensional milling model technology digital-to-analogue data centralization, the outline of three-dimensional chemical milling template is identical with the Internal periphery of standard jig, the quantity of perspective mouth 8 is identical with the quantity of the perspective mouth 5 of standard jig technique digital-to-analogue data centralization and position is corresponding, the quantity of the milling locator tabs 6 of chemical milling template technique digital-to-analogue data centralization, the quantity of the milling locator tabs 6 of position and size and standard jig technique digital-to-analogue data centralization, position and measure-alike, the quantity of the assembling and positioning auricle 7 of chemical milling template technique digital-to-analogue data centralization, the quantity of the assembling and positioning auricle 7 of position and size and standard jig technique digital-to-analogue data centralization, position and measure-alike,
4, three-dimensional chemical milling template is manufactured:
4.1, thickness is adopted to be that the aluminium sheet of 1.5mm ~ 2mm manufactures three-dimensional chemical milling template, the overall size of three-dimensional milling master blank is identical with aircraft milling covering blank, three-dimensional milling master blank is drawn into type on pull-up mould, makes the profile of three-dimensional milling master blank meet the requirement of the mathematical model of aircraft milling covering;
4.2, by the computer of chemical milling template technique digital-to-analogue data set input Five Axis CNC milling machine, digital control processing is carried out to the three-dimensional milling master blank of band profile, obtains three-dimensional chemical milling template 9.
Operation principle of the present invention is: according to the mathematical model of aircraft milling covering, use CATIA software Criterion model technology digital-to-analogue data set, adopt digital-to-analogue profile to the thick method of bias internal aircraft milling covering material, Criterion model technology digital-to-analogue data set, in standard jig technique digital-to-analogue data centralization, open perspective mouth 5 except aircraft milling covering being needed groove 2 normal direction of milling and on the quadrangular configuration edge of aircraft milling covering, be provided with the milling locator tabs of locating hole, and beyond the assembling and positioning auricle being provided with locating hole, remaining data is identical with the mathematical model of aircraft milling covering, milling locator tabs is arranged on a lateral edges that aircraft milling covering stretches along long limit uniform, assembling and positioning auricle is arranged on aircraft milling covering along on the both sides of the edge that broadside stretches, every lateral edges arranges 1 assembling and positioning auricle.
Set up three-dimensional milling model technology digital-to-analogue data set: establishing criteria model technology digital-to-analogue data set, use CATIA software, set up three-dimensional milling model technology digital-to-analogue data set, in three-dimensional milling model technology digital-to-analogue data centralization, the outline of three-dimensional chemical milling template is identical with the Internal periphery of standard jig, the quantity of perspective mouth is identical with the quantity of the perspective mouth of standard jig technique digital-to-analogue data centralization and position is corresponding, the position of milling locator tabs is identical with the milling locator tabs of standard jig technique digital-to-analogue data centralization with size, the assembling and positioning auricle quantity of three-dimensional milling model technology digital-to-analogue data centralization, the assembling and positioning auricle quantity of position and size and standard jig technique digital-to-analogue data centralization, position and measure-alike.
Manufacturer's standard model, three-dimensional chemical milling template:
Aircraft milling covering blank is drawn into type on pull-up mould, make the profile of aircraft milling covering blank, then by the computer of standard jig technique digital-to-analogue data set input Five Axis CNC milling machine, to being with manufacturer's standard model, the chemical milling template blank of profile to carry out digital control processing, thus obtain standard jig, chemical milling template.
The effect of standard jig is: the profile of standard jig and perspective mouth are as the design of three-dimensional chemical milling template, simultaneously by the locating hole in assembling and positioning auricle, alignment pin is adopted to come locating hole in Coordinative assembling type frame and the relative rigging position of aircraft milling covering, also for checking the position of mould tire milling locating hole, thus ensure positioning precision between aircraft milling covering and three-dimensional chemical milling template, namely check the coordination positioning relation between type frame and mould tire.
Embodiment:
Milling skin part length 6065mm as shown in Figure 1, wide 2306mm, wherein have 57 quadrangle milling districts, each milling head of district 46mm, wide 28mm, part material thickness δ=2.5mm.
Criterion model technology digital-to-analogue data set.
First according to the mathematical model of aircraft milling covering, use CATIA software Criterion model technology digital-to-analogue data set, digital-to-analogue profile is adopted to be δ 2.5mm to bias internal aircraft milling skin material thickness, Criterion model technology digital-to-analogue data set, in standard jig technique digital-to-analogue data centralization, the groove normal direction of milling is needed by aircraft milling covering to open perspective 57, mouth, each perspective mouth is of a size of long 46mm, wide 28mm, the quadrangular configuration edge of aircraft milling covering is provided with the milling locator tabs 2 of locating hole, and beyond the assembling and positioning auricle 2 being provided with locating hole, remaining data is identical with the mathematical model of aircraft milling covering, 2 milling locator tabs, be arranged on a lateral edges that aircraft milling covering stretches along long limit uniform, 2 assembling and positioning auricles, be arranged on aircraft milling covering along on the both sides of the edge that broadside stretches, every lateral edges arranges 1 assembling and positioning auricle, aperture, location is Φ 5.2mm.
Set up three-dimensional milling model technology digital-to-analogue data set.
Establishing criteria model technology digital-to-analogue data set, use CATIA software, set up chemical milling template technique digital-to-analogue data set, in three-dimensional milling model technology digital-to-analogue data centralization, perspective mouth has that 57 identical with the quantity of the perspective mouth of standard jig technique digital-to-analogue data centralization and position is corresponding, outline due to three-dimensional chemical milling template is the Internal periphery of standard jig, sample sheet material thickness makes the size of perspective mouth there occurs change, be of a size of long 465.98mm, wide 27.98mm, its tolerance 0.02mm produced due to material thickness, the milling locator tabs quantity 2 of chemical milling template technique digital-to-analogue data centralization, position is identical with the milling locator tabs of standard jig technique digital-to-analogue data centralization with size, the assembling and positioning auricle quantity 2 of chemical milling template technique digital-to-analogue data centralization, the assembling and positioning auricle quantity of position and size and standard jig technique digital-to-analogue data centralization, position and measure-alike.
Manufacturer's standard model.
Aircraft milling covering blank is drawn into type on pull-up mould, make the profile of aircraft milling covering blank, meet the requirement of aircraft milling covering mathematical model, then standard jig technique digital-to-analogue data set inputs in the computer of Five Axis CNC milling machine, digital control processing is carried out to the aircraft milling covering blank of band profile, obtains standard jig 4.
Manufacture three-dimensional chemical milling template.
Material thickness is adopted to be that δ 2mm aluminium sheet manufactures three-dimensional chemical milling template, the overall size of three-dimensional milling master blank is identical with aircraft milling covering blank, three-dimensional milling master blank is drawn into type on pull-up mould, the profile of three-dimensional milling master blank is made to meet the requirement of the mathematical model of aircraft milling covering, again by the computer of chemical milling template technique digital-to-analogue data set input Five Axis CNC milling machine, digital control processing is carried out to the three-dimensional milling master blank of band profile, obtains three-dimensional chemical milling template 9.
Claims (1)
1. the manufacture method of the three-dimensional chemical milling template of aircraft milling covering, the inner surface of aircraft milling covering (1) there is the non-milling part formed between groove (2) and groove (2) through milling form rib (3), the bottom land profile of groove (2) is identical with the profile of corresponding aircraft milling covering (1), it is characterized in that: the step manufacturing three-dimensional chemical milling template is as follows:
1.1, Criterion model technology digital-to-analogue data set: according to the mathematical model of aircraft milling covering, use CATIA software, adopt digital-to-analogue profile to the thick method of bias internal aircraft milling covering material, Criterion model technology digital-to-analogue data set, in standard jig technique digital-to-analogue data centralization, open except the milling locator tabs (6) becoming perspective mouth (5) and be provided with locating hole on the quadrangular configuration edge of aircraft milling covering and the assembling and positioning auricle (7) being provided with locating hole except aircraft milling covering being needed the groove of milling (2) along normal direction, remaining data is identical with the mathematical model of aircraft milling covering, milling locator tabs is arranged on the lateral edges that aircraft milling covering stretches along long limit, the quantity of milling locator tabs (6) is 2 ~ 6, uniform along this edge, assembling and positioning auricle (7) is arranged on aircraft milling covering along on the both sides of the edge that broadside stretches, every lateral edges arranges 1 assembling and positioning auricle,
1.2, manufacturer's standard model:
1.2.1, by aircraft milling covering blank on pull-up mould, be drawn into type, make the profile of aircraft milling covering blank, meet the requirement of aircraft milling covering mathematical model;
1.2.2, by the computer of standard jig technique digital-to-analogue data set input Five Axis CNC milling machine, digital control processing is carried out to the aircraft milling covering blank of band profile, obtains standard jig (4);
1.3, set up chemical milling template technique digital-to-analogue data set: establishing criteria model technology digital-to-analogue data set, use CATIA software, set up chemical milling template technique digital-to-analogue data set, in chemical milling template technique digital-to-analogue data centralization, the quantity of perspective mouth (8) is identical with the quantity of the perspective mouth (5) of standard jig technique digital-to-analogue data centralization and position is corresponding, the quantity of the milling locator tabs (6) of chemical milling template technique digital-to-analogue data centralization, the quantity of the milling locator tabs (6) of position and size and standard jig technique digital-to-analogue data centralization, position and measure-alike, the quantity of the assembling and positioning auricle (7) of chemical milling template technique digital-to-analogue data centralization, the quantity of the assembling and positioning auricle (7) of position and size and standard jig technique digital-to-analogue data centralization, position and measure-alike,
1.4, three-dimensional chemical milling template is manufactured:
1.4.1 thickness, is adopted to be that the aluminium sheet of 1.5mm ~ 2mm manufactures three-dimensional chemical milling template, the overall size of three-dimensional milling master blank is identical with aircraft milling covering blank, three-dimensional milling master blank is drawn into type on pull-up mould, makes the profile of three-dimensional milling master blank meet the requirement of the mathematical model of aircraft milling covering;
1.4.2, by the computer of chemical milling template technique digital-to-analogue data set input Five Axis CNC milling machine, digital control processing is carried out to the three-dimensional milling master blank of band profile, obtains three-dimensional chemical milling template (9).
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| 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 |
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| CN117139702A (en) * | 2023-10-31 | 2023-12-01 | 中航成飞民用飞机有限责任公司 | Magnetic attraction type large-scale skin three-dimensional milling and engraving device and manufacturing and using method thereof |
| CN117139702B (en) * | 2023-10-31 | 2024-01-23 | 中航成飞民用飞机有限责任公司 | Magnetic attraction type large-scale skin three-dimensional milling and engraving device and manufacturing and using method thereof |
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