CN104227313A - Method and device for repairing corrosion damage parts - Google Patents
Method and device for repairing corrosion damage parts Download PDFInfo
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- CN104227313A CN104227313A CN201410447083.9A CN201410447083A CN104227313A CN 104227313 A CN104227313 A CN 104227313A CN 201410447083 A CN201410447083 A CN 201410447083A CN 104227313 A CN104227313 A CN 104227313A
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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
- B23P6/00—Restoring or reconditioning objects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/02—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using liquid or paste-like material
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Abstract
The invention relates to a method for repairing corrosion damage parts. The method comprises the following steps: automatically eliminating corrosion products layer by layer at minimal milling amount by use of a milling cutter and recording detailed three-dimensional data of a final milled surface, performing rapid repairing by use of a 3D printing method until recovering the original design shape of the part, and then performing shot peening. The invention also relates to a device for repairing corrosion damage parts. The device comprises an FDOF (Four degrees of Freedom) manipulator, wherein the front end of the manipulator is provided with a station-replaceable milling cutter and a 3D printing head. After the corrosion products are eliminated, the corrosion damage positions of the parts are repaired by virtue of the 3D printing method, so that rejection rate of the corrosion damage parts is reduced, and the repair efficiency, repair strength and reliability of the corrosion damage parts are improved. The method and the device can be applied to repair of corrosion damage parts.
Description
Technical field
The present invention relates to the reparation field of part, particularly relate to a kind of restorative procedure and device of corrosion damage part.
Background technology
In use often there is the situation of being corroded in metal material or composite element, domestic and international reconnaissance information statistics display, the annual loss caused because of corrosion accounts for 3% ~ 5% of various countries GDP, and wherein some is can the slight erosion of repairing and reusing.The processing method taked for etching part at present, for single metal material part, the first is that extent of corrosion is comparatively light, and restorative procedure carries out simple surface anticorrosion process after being removing corrosion material again.The intensity of the obvious component of this situation can decrease; The second is that extent of corrosion is heavier, also will carry out shot peening strengthening to make up loss of strength as far as possible to corrosion area, although this situation has carried out shot peening strengthening to damage field, but still cannot reach original design strength after removing corrosion material; The third is that component partial corrodes disconnection completely, adopts the method reparation of additional bridge piece in some cases, then can produce new stress in this case after repair and concentrate, and add weight, cause occurring unfavorable factor; 4th kind is then that extent of corrosion especially severe cannot be repaired and directly scrap, and loss is comparatively large, but wherein part might not cannot be repaired completely.
And for fibre-reinforced composite material parts, be all generally paste damage zone with layering after existing fibre knitting cloth pre-soaked resin to the reparation of damage location, then carry out being heating and curing and surface finish.But in order to ensure the quality of repairing, generally all select larger-size fiber cloth, the region of namely repairing is often much larger than damage field, make troubles so just to polishing operation below, and the new and old material bond strength of restoring area is often on the low side.
Summary of the invention
In order to overcome above-mentioned technical problem, the object of the present invention is to provide a kind of restorative procedure of corrosion damage part, reducing the scrappage of corrosion damage part, remediation efficiency and the reliability of corrosion damage part can be improved again.
The technical solution adopted in the present invention is:
A restorative procedure for corrosion damage part, successively removes corrosion product with minimum milling amount automatically with milling cutter, adopts 3D Method of printing to carry out repairing to the former design shape of part fast, carry out shot peening strengthening afterwards after recording the detailed threedimensional data in final milling face.
As the further improvement of technique scheme, corrosion product cuts out at milling facing cut the tiny groove or grid that are staggered after removing, and forms final milling face.
As the further improvement of technique scheme, with final milling face for bottom, successively add and solidify reparation raw material from the bottom to top and carry out 3D printing reparation.
As the further improvement of technique scheme, when rebuild part is homogenous material, final milling face is channel form, and reparation raw material is single structure; When rebuild part is fibrous composite, final milling face is latticed, and repairing raw material is at least one fibrous material and a kind of resin material.
As the further improvement of technique scheme, in the reset procedure of corrosion product, determine milling track by the torque value monitoring milling cutter continuously.
As the further improvement of technique scheme, described milling track is determined in the following manner:
A. milling cutter is arranged on the cutter spindle of band torsion torque sensor, with the surface of the non-corrosion region of component for depth datum, milling cutter is moved to the roughly centre position of corrosion region, be designated as initial point A;
B. by every layer of cutting output of setting, milling cutter is rotated while move down, move to corrosion region edge again, continue when torque value increases suddenly to move by former direction until when the beginning that gathers way of torque value obviously declines, record this torque value as critical value P, milling cutter continues to move by former direction, when torque value reaches 1.2P, remember that this position is D point;
C. be starting point with D, for reference point, to make circumference mobile with position A to make milling cutter, and with milling cutter as far as possible to mobile away from A place and keep torque value for principle between 1.1P ~ 1.2P, until starting point D got back to by milling cutter, record the closed track that milling cutter is walked out;
D. milling cutter to detour multi-turn by parallel path in described closed track, until covering is closed the Zone Full within track thus is formed one deck milling face, the position that torque value is minimum is there is in record when moving in parallel, be designated as new initial point A, if torque value when moving in parallel is more stable, then do not upgrade the record of initial point A;
E. the milling bottom surface formed with steps d, for depth datum, is repeated step b ~ d, until when the torque value produced during milling in closed track all reaches 1.0P ~ 1.1P, is completed the removing of corrosion product, and each layer milling face is generated enveloping surface data automatically.
The present invention also provides a kind of prosthetic device of corrosion damage part, and the technical scheme of employing is:
A prosthetic device for corrosion damage part, comprises the manipulator with four frees degree, and the front end of described manipulator is provided with milling cutter and the 3D printhead of replaceable station.
As the further improvement of technique scheme, described 3D printhead is provided with laser perforation and the intensity of laser is adjustable.
As the further improvement of technique scheme, described 3D printhead comprises an interchangeable single hole printhead of station and a diplopore printhead, described single hole printhead has the single feedhole for spraying single reparation raw material, and described diplopore printhead has two feedholes being respectively used to fiber wire feed and ejection resin.
As the further improvement of technique scheme, described milling cutter comprises flat-end cutter and the tip milling cutter of replaceable station, and the cutter spindle of described flat-end cutter is provided with torsion torque sensor.
The invention has the beneficial effects as follows: the corrosion damage position of method to part that the present invention is printed by 3D after removing corrosion product is repaired, thus reduce the scrappage of corrosion damage part, improve the remediation efficiency of corrosion damage part, Repair strength and reliability.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the present invention is further described.
Fig. 1 is the structural representation of prosthetic device of the present invention;
Fig. 2 is the partial schematic diagram of aluminum alloy part corrosion area;
Fig. 3 is cutter spindle torsion M and the milling cutter position changing trend diagram to corrosion region central point distance L;
Fig. 4 is the floor map of milling cutter first time milling closed track out;
Fig. 5 be when removing ground floor corrosion product milling cutter multi-turn detour after track schematic diagram;
Fig. 6 is the schematic cross-section of the enveloping surface generated on the basis, step milling face that flat-end cutter milling produces;
Fig. 7 is the groove shape schematic diagram processed in aluminium alloy injuring part milling cutter hole;
Fig. 8 is the schematic cross-section after aluminum alloy part is repaired;
Fig. 9 is the partial schematic diagram in carbon fibre composite component corrosion region;
Figure 10 is the mesh shape schematic diagram processed in carbon fibre composite injuring part milling cutter hole;
Figure 11 is the schematic cross-section after carbon fiber component is repaired.
Detailed description of the invention
As shown in Figure 1, a rotatable control box 2 is installed in the front end of the manipulator 1 in 4 joints, control box 2 side is provided with two milling cutters and two 3D printheads, wherein two milling cutters comprise flat-end cutter 3 and tip milling cutter 4,3D printhead comprises a single hole printhead 5 and a diplopore printhead 6.The cutter spindle of flat-end cutter 3 is provided with torsion torque sensor 7, the torsion that cutter spindle bears can be responded to, and torque value is sent to the running orbit that System Control Center is used for controlling milling cutter, single hole printhead 5 is provided with feedhole and a laser perforation of a single reparation raw material of ejection, diplopore printhead 6 is established two feedholes and a laser perforation, two feedholes are respectively used to fiber wire feed and ejection resin.The laser intensity of the laser perforation on two printheads all can regulate, to realize different solidification temperatures required when 3D prints.
Control box 2 can freely rotate to use different milling cutters and 3D printhead, milling cutter and 3D printhead can be moved to the position of specifying and the attitude of specifying, thus realizes the quick reparation to corrosion of component damage location.
Embodiment one:
Figure 2 shows that the view after 7075 aluminium alloy element local corrosions, I district is complete corrosion material (corrosion product), and II district is corrosion transition material, and III district is matrix material.The restorative procedure concrete steps adopted comprise:
(1) milling cutter and machined parameters is selected: because the corrosion product of 7075 aluminium alloys is similar to powder, when removing corrosion product, select the slightly large flat-end cutter of diameter to increase the elimination efficiency of corrosion product, diameter is 6mm, setting milling cutter rotating speed is 800 revs/min, milling cutter translational speed is 2mm/ second, and every layer of cutting output is 0.5mm; When the final groove profile of milling, selection diameter is the tip milling cutter of 2mm, and milling cutter translational speed is 1mm/ second, and every layer of cutting output is 0.3mm;
(2) prepare to remove corrosion product: selected flat-end cutter is arranged on the cutter spindle of band torsion torque sensor, with the surface of the non-corrosion region of component for depth datum, milling cutter is moved to the roughly centre position of corrosion region, be designated as initial point A;
(3) this one deck corrosion product current is removed: rotated by milling cutter by every layer of cutting output (0.5mm) of setting and move down 0.5mm, move to corrosion region edge by the translational speed (2mm/ second) of setting again, milling cutter is from the process of the outside movement of A point, the variation tendency of cutter spindle torque value M is as shown in Figure 3: incipient stage torque value M is very little and keep stable (AB section), illustrates that milling cutter is cutting corrosion product I always; When milling cutter is when cutting corrosion transition region material II, because the thickness corroding transition region is less, so torque value M can increase sharply (BC section); When torque value M gather way start to reduce time (C point), illustrate that milling cutter has been cut to matrix material III, record this torque value as critical value P.When milling cutter continues to move to matrix III direction, then button power M continues to increase, but gathers way and can reduce to some extent, and when torque value is increased to 1.2P, milling cutter stops mobile, and recording this position is D point;
(4) corrosion product at this one deck corrosion region edge current is removed: with D point for starting point, make milling cutter with position A for reference point is by counterclockwise mobile, and distally move with milling cutter as far as possible and keep torque value to be principle between 1.1P ~ 1.2P, until described starting point D got back to by milling cutter, at this moment milling cutter detours around the edge of corrosion region this one deck current a circle, system records the closed track of milling cutter automatically, as shown in Figure 4;
(5) this remaining corrosion product of one deck corrosion region current is removed: milling cutter to detour multi-turn (often enclosing the diameter that the distance moved inward equals milling cutter) by parallel path in the closed track formed, until cover the Zone Full (as shown in Figure 5) closed within track, then the corrosion product of this one deck of corrosion region all can be removed.If torsion when milling cutter detours is sometimes large sometimes little, illustrate that having touched corrosion transition region at the local milling cutter that torsion is large even touches matrix material, then corrosion depth is larger in torsion little place, system automatically records when detouring and occurs the position that torque value is obviously less than normal, the A point position of original record is upgraded respectively, so that as the reference point removing lower one deck corrosion product with A1, A2, A3 etc.; If torque value when detouring is less than P and stablizes constant, illustrating that milling cutter does not also touch corrosion transition region when detouring in this region, all moving in complete corrosion region, then need not upgrade initial point A in this case;
(6) successively corrosion product is removed: the milling bottom surface formed with step (5) is for depth datum, repeat step (3) ~ (5), until the torque value produced during milling in closed track all reaches 1.0P ~ 1.1P, the matrix material of the whole contact corrosion sections bottom of milling cutter is described, completes the removing of corrosion product; If at certain one deck corrosion product of removing at first, occur that torque value reaches 1.0P ~ 1.1P in milling cutter decline process, illustrate and contact with matrix material, do not need to drop to every layer of cutting output of specifying in this case and can stop declining, and continued the removing of current layer corrosion product.Then by aforementioned each milling step the milling face produced with step automatically generate enveloping surface data, as shown in Figure 6.
(7) milling groove: change tip milling cutter, the basis of formed milling enveloping surface mills 0.3mm thick material again, with ensure milling cutter all milling to matrix material, and then mill out the groove be staggered, as shown in Figure 7, the three-dimensional data information in the final milling face formed of record;
(8) 3D prints and repairs: the three-dimensional data information in the milling face of recording by step (7), with the spray-hole of single hole printhead, 7075 Al alloy powders are ejected in milling cutter hole, irradiate with the laser on printhead 7075 Al alloy powders being just sprayed onto milling surface simultaneously and make it solidify.Milling position is being carried out in increasing material printing repair process, single hole printhead is first from most position, deep, milling face, adding material solidifying one by one in this one deck, the segment distance that moved up by single hole printhead after completing one deck carries out interpolation and the solidification of second layer material, until recover the original design shape of part, as shown in Figure 8.Because the material that newly adds and original matrix material are that therefore combine more firm, intensity is larger together with groove contact by being staggered;
(9) surface peening: owing to have employed laser curing in repair process, the heat affected area formed can produce disadvantageous residual stress, in order to eliminate this adverse effect, with glass bullet, shot peening is carried out to reparation surface and near zone, eliminate disadvantageous residual stress on the one hand, can surface quality be improved again on the other hand.
Embodiment two:
Figure 9 shows that the view after Carbon-fiber Reinforced Plastics Component local corrosion, the restorative procedure concrete steps of employing comprise:
(1) select diameter to be the flat-end cutter of 6mm, setting milling cutter rotating speed is 1000 revs/min, and milling cutter translational speed is 5mm/ second, and every layer of cutting output is 0.8mm; Select the tip milling cutter of tip diameter 1mm, milling cutter translational speed is 2mm/ second, and every layer of cutting output is 0.3mm;
(2) ~ (6) are identical with embodiment 1;
(7) change tip milling cutter, the basis of formed milling enveloping surface mills 0.3mm thick matrix material again, thoroughly removes corrosion product, and mill out grid, as shown in Figure 10, the three-dimensional data information in the final milling face formed of record;
(8) the three-dimensional data information in the milling face of recording by step (7), adopt diplopore printhead, by one of them feedhole, carbon fiber is sprayed, make fiber stretching by the salient point that is looped around grid, and by another feedhole, resin material is ejected on carbon fiber, simultaneously laser irradiates the carbon fiber that has just been sprayed onto milling surface and resin makes it solidify, milling position is being carried out in increasing material printing repair process, diplopore printhead is first from most position, deep, milling face, adding material solidifying one by one in this one deck, the segment distance that moved up by diplopore printhead after completing one deck carries out interpolation and the solidification of second layer material, until recover the original design shape of part, as shown in figure 11, owing to having a lot of salient point in the grid in milling hole, not only can fiber be routed in milling hole with straight state, avoid occurring that fiber bending is at material internal, to give full play to the anisotropic performance characteristics of fiber, and can select to weave fiber on required direction by performance requirement, thus obtain the fiber distribution and mechanical performance optimized.
The above is the preferred embodiment of the present invention, and it does not form limiting the scope of the invention.
Claims (10)
1. the restorative procedure of a corrosion damage part, it is characterized in that: automatically successively remove corrosion product with minimum milling amount with milling cutter, adopt 3D Method of printing to carry out repairing to the former design shape of part fast after recording the detailed threedimensional data in final milling face, carry out shot peening strengthening afterwards.
2. the restorative procedure of corrosion damage part according to claim 1, is characterized in that: corrosion product cuts out at milling facing cut the tiny groove or grid that are staggered after removing, and forms final milling face.
3. the restorative procedure of corrosion damage part according to claim 2, is characterized in that: with final milling face for bottom, successively adds and solidifies reparation raw material from the bottom to top and carry out 3D printing reparation.
4. the restorative procedure of corrosion damage part according to claim 3, is characterized in that: when rebuild part is homogenous material, final milling face is channel form, and reparation raw material is single structure; When rebuild part is fibrous composite, final milling face is latticed, and repairing raw material is at least one fibrous material and a kind of resin material.
5. the restorative procedure of the corrosion damage part according to claim 1 or 2 or 3 or 4, is characterized in that: in the reset procedure of corrosion product, determines milling track by the torque value monitoring milling cutter continuously.
6. the restorative procedure of corrosion damage part according to claim 5, is characterized in that, described milling track is determined in the following manner:
A. milling cutter is arranged on the cutter spindle of band torsion torque sensor, with the surface of the non-corrosion region of component for depth datum, milling cutter is moved to the roughly centre position of corrosion region, be designated as initial point A;
B. by every layer of cutting output of setting, milling cutter is rotated while move down, move to corrosion region edge again, continue when torque value increases suddenly to move by former direction until when the beginning that gathers way of torque value obviously declines, record this torque value as critical value P, milling cutter continues to move by former direction, when torque value reaches 1.2P, remember that this position is D point;
C. be starting point with D, for reference point, to make circumference mobile with position A to make milling cutter, and with milling cutter as far as possible to mobile away from A place and keep torque value for principle between 1.1P ~ 1.2P, until starting point D got back to by milling cutter, record the closed track that milling cutter is walked out;
D. milling cutter to detour multi-turn by parallel path in described closed track, until covering is closed the Zone Full within track thus is formed one deck milling face, the position that torque value is minimum is there is in record when moving in parallel, be designated as new initial point A, if torque value when moving in parallel is more stable, then do not upgrade the record of initial point A;
E. the milling bottom surface formed with steps d, for depth datum, is repeated step b ~ d, until when the torque value produced during milling in closed track all reaches 1.0P ~ 1.1P, is completed the removing of corrosion product, and each layer milling face is generated enveloping surface data automatically.
7. realize a device for method according to any one of claim 1 to 6, it is characterized in that: comprise the manipulator with four frees degree, the front end of described manipulator is provided with milling cutter and the 3D printhead of replaceable station.
8. device according to claim 7, is characterized in that: described 3D printhead is provided with laser perforation and the intensity of laser is adjustable.
9. the device according to claim 7 or 8, it is characterized in that: described 3D printhead comprises an interchangeable single hole printhead of station and a diplopore printhead, described single hole printhead has the single feedhole for spraying single reparation raw material, and described diplopore printhead has two feedholes being respectively used to fiber wire feed and ejection resin.
10. device according to claim 7, is characterized in that: described milling cutter comprises flat-end cutter and the tip milling cutter of replaceable station, and the cutter spindle of described flat-end cutter is provided with torsion torque sensor.
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| CN201410447083.9A CN104227313B (en) | 2014-09-03 | 2014-09-03 | The restorative procedure of a kind of corrosion damage part and device |
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| CN201410447083.9A CN104227313B (en) | 2014-09-03 | 2014-09-03 | The restorative procedure of a kind of corrosion damage part and device |
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| CN104741609A (en) * | 2015-03-31 | 2015-07-01 | 深圳市圆梦精密技术研究院 | Electron beam melting and cutting combined 3D printing equipment |
| CN105127758A (en) * | 2015-10-15 | 2015-12-09 | 山东理工大学 | Multi-axis combination device for machine tool |
| CN105478764A (en) * | 2015-12-11 | 2016-04-13 | 湖北三环锻造有限公司 | Welding repair technology of forging die 3D printing material increase |
| CN107019922A (en) * | 2016-01-31 | 2017-08-08 | 浙江智源办公设备制造有限公司 | A kind of method for maintaining of toy |
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| CN104385639A (en) * | 2014-10-20 | 2015-03-04 | 合肥斯科尔智能科技有限公司 | Product repairing system with function of three-dimensional printing |
| CN104741609A (en) * | 2015-03-31 | 2015-07-01 | 深圳市圆梦精密技术研究院 | Electron beam melting and cutting combined 3D printing equipment |
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| CN107116337A (en) * | 2017-06-16 | 2017-09-01 | 中国人民解放军第五七九工厂 | A kind of fan unit of aircraft engine coaxiality adjusting method |
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| CN108393654A (en) * | 2018-01-15 | 2018-08-14 | 大连理工大学 | A kind of manufacturing method of fine structure |
| CN108746684A (en) * | 2018-06-29 | 2018-11-06 | 德阳杰创科技有限公司 | A kind of removable alloy bar knife |
| CN109202378A (en) * | 2018-08-30 | 2019-01-15 | 大连交通大学 | A kind of increase and decrease composite intelligent restorative procedure of metal parts |
| CN109202378B (en) * | 2018-08-30 | 2021-02-05 | 大连交通大学 | Increasing and decreasing composite intelligent repair method for metal parts |
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| DE102019129378A1 (en) * | 2019-08-21 | 2021-02-25 | Sklt Strahlkraft Lasertechnik Gmbh | Method and device for additive manufacturing of a molded body |
| CN117001267A (en) * | 2023-05-31 | 2023-11-07 | 东莞市海发科技发展有限公司 | Workpiece renovating and repairing process |
| CN117001267B (en) * | 2023-05-31 | 2024-03-12 | 东莞市海发科技发展有限公司 | Workpiece renovating and repairing process |
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| CN104227313B (en) | 2016-09-07 |
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