CN104842077A - Aluminum alloy microwave assembly brazing sheet processing method - Google Patents
Aluminum alloy microwave assembly brazing sheet processing method Download PDFInfo
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- CN104842077A CN104842077A CN201510313406.XA CN201510313406A CN104842077A CN 104842077 A CN104842077 A CN 104842077A CN 201510313406 A CN201510313406 A CN 201510313406A CN 104842077 A CN104842077 A CN 104842077A
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- floating platform
- air floating
- electronic air
- brazing sheet
- cut
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention discloses an aluminum alloy microwave assembly brazing sheet processing method, which comprises the steps of 1) placing an aluminum alloy brazing sheet to be cut on an electric air-floating platform; 2) starting a vacuum pump so as to carry out air extraction on a micropore array on the electric air-floating platform, thereby enabling the aluminum alloy brazing sheet to be cut to be adsorbed on the electric air-floating platform; 3) selecting appropriate cutting parameters, and starting an ultraviolet laser and the electric air-floating platform to carry out cutting; and 4) turning off the vacuum pump after cutting is finished, and taking out a well cut brazing sheet. The method disclosed by the invention can cut the brazing sheet, which is complex in shape and high in precision, by using ultraviolet laser under the condition of not using a fixture, thereby being conducive to improving the batch production efficiency. According to the invention, cutting edges are clean and have no adhering slag or carbon deposits, and the brazing sheet can be directly applied to brazing welding after being cut, thereby avoiding damages for the processing precision of the brazing sheet in a secondary mechanical cleaning process.
Description
Technical field
The present invention relates to the manufacture field of microwave components soldering lug, particularly relate to a kind of aluminium alloy microwave components soldering lug processing method.
Background technology
For meeting the double requirements of structure and electrical property, the shape of microwave components becomes increasingly complex, and precision is more and more higher.Such as, flat-type radiating guide is a kind of microwave components being widely used in modern radar field, is generally made up of multiple complex-shaped high accuracy thin-walled die cavity class part, its complex structure, often there is hundreds of waveguide die cavities and miniature groove, have a hundreds of size to need to ensure; On the other hand, the dimensional accuracy of antenna and the accuracy of form and position also more and more trend towards micron order standard.As the key link of microwave components brazing process, how processing soldering lug that is consistent with microwave components solder side shape, Accuracy Matching has become the focus of attention that microwave components manufactures field, is also a Pinch technology of restriction microwave components precision welding.
At present, the manufacturing process of microwave components soldering lug mainly contains two kinds.One is according to solder side shape, size, utilizes the manual scribing of scalpel to go out soldering lug.The soldering lug dimensional accuracy that the large and scribing of this cutting mode amount of labour goes out is low, distortion is serious, is difficult to the welding batch production being applied to complex precise microwave components.The second cutting mode carries out electric discharge cutting for utilizing wire cutting machine, the more manual scribing of this mode significantly improves in efficiency, but each waveguide die cavity all needs to carry out punching, wearing silk in Linear cut process, operation is many and complicated, and easily on soldering lug, leave greasy dirt after Linear cut, also need to clean soldering lug, reduce production efficiency.In addition, also C0 is utilized at present
2laser instrument or Nd:YAG laser instrument carry out the report of soldering lug cutting, but in its cutting process, soldering lug utilizes special frock to be fixed on platform, needs afterwards before cutting to carry out clamping, unloading, have impact on cutting efficiency.And due to C0
2belong to thermal source laser with Nd:YAG laser, its optical maser wavelength is respectively 10.64 μm and 1.064 μm, is cut, easily produce splashing in process by molten metallic material, causes cut place to occur the phenomenon such as dross, carbon deposit.If do not carried out polishing cleaning to dross, carbon deposit thing etc. after dicing, can the microwave components electrical property after soldering be had an impact; If polish to the dross on soldering lug, carbon deposit thing, because soldering lug thinner (0.05 ~ 0.3mm), intensity are low, bruting process very easily causes the distortion of soldering lug, destroys the cutting accuracy of soldering lug, easily equally has an impact to the microwave components electrical property after soldering.
Summary of the invention
Low for soldering lug cut lengths precision in prior art, distortion is serious, soldering lug exists the problem such as dross, carbon deposit thing, provides a kind of aluminium alloy microwave components soldering lug processing method.The present invention utilizes Ultra-Violet Laser to cut out complex-shaped, high-precision soldering lug under can be implemented in and not using the condition of frock clamp.
The present invention is achieved through the following technical solutions above-mentioned technical purpose:
A kind of aluminium alloy microwave components soldering lug processing method, comprises the following steps:
Aluminium alloy brazing sheet to be cut after removal superficial oxidation skin lies against on electronic air floating platform by step 1.;
Step 2. starts vavuum pump and bleeds to the microwell array on electronic air floating platform, is adsorbed on electronic air floating platform by smooth for aluminium alloy brazing sheet to be cut;
Step 3. selects the cutting parameter of ultraviolet laser and electronic air floating platform;
Step 4. starts ultraviolet laser, electronic air floating platform cuts aluminium alloy brazing sheet to be cut;
After step 5. laser cutting, close ultraviolet laser, electronic air floating platform and vavuum pump, electronic air floating platform adsorption pressure reduces to 0Pa, takes out the soldering lug cut.
Further, in step 2, the adsorptive pressure of described vavuum pump is-60KPa ~-120KPa.
As the preferred version of technique scheme, described adsorptive pressure is-80Pa.
Further, in step 3, described in the cutting parameter selected be: the rated power of ultraviolet laser is 5-100W, operating current is 10-100A, frequency is 10000-50000Hz, and the movement velocity of electronic air floating platform is 0.1-5mm/s.
As the preferred version of technique scheme, the rated power of described ultraviolet laser is 10W, operating current is 34.5A, frequency is 30000Hz; The movement velocity of described electronic air floating platform is 0.6mm/s.
Further, described electronic air floating platform surface is provided with microwell array, and described microwell array is connected with vavuum pump.
Further, near the laser head of described ultraviolet laser, sweep-up pipe is installed.
Beneficial effect
The present invention compared with prior art, has the following advantages:
1. adopt the Ultra-Violet Laser of cold light source to carry out soldering lug cutting.Ultra-Violet Laser is short wavelength laser (wavelength is 355nm), and directly Metal gasification is realized cutting in laser emission region in process, its focal beam spot and heat affected area are all less than large wavelength laser, without dross and carbon deposit thing after cutting.
2. cutting accuracy is high, can reach 10 μm.Electronic air floating platform kinematic accuracy is up to 0.01 μm, and Ultra-Violet Laser cutting gap is little, heat affected area is narrow, is conducive to the control of cutting accuracy.
3. in cutting process due to sweep-up pipe continue absorb cutting produce dust, and soldering lug needs cleaning without things such as dross, carbon deposit things after Ultra-Violet Laser cutting, therefore this technology cutting gained weld tabs can directly carry out with microwave components assembling, welding, and avoids the soldering lug problem on deformation in polishing scale removal process.
4. utilize the negative-pressure adsorption power of platform to realize the fixing of soldering lug, achieve and exempt from frock and fix.
5. production efficiency is high.Exempt from frock due to cutting process to fix, and without the need to polishing cleaning after cutting, therefore compared to other soldering lug cutting technique, save the polishing time of soldering lug after the clamping of frock and unloading, cutting, be conducive to improving and batch produce efficiency.
Accompanying drawing explanation
Fig. 1 is the cutting schematic diagram of soldering lug of the present invention;
Fig. 2 is the Local C AD design drawing of soldering lug of the present invention.
Detailed description of the invention
For making to have a better understanding and awareness architectural feature of the present invention and effect of reaching, use
Coordinate detailed description with preferred embodiment and accompanying drawing, be described as follows:
As shown in Fig. 1 Fig. 2, the present invention discloses a kind of aluminium alloy microwave components soldering lug processing method.Fig. 1 gives the schematic diagram cut certain microwave components soldering lug used, and Fig. 2 gives the Local C AD design drawing of cutting profile.The aluminium alloy brazing sheet 3 to be cut of first taking 500mm ╳ 300mm ╳ 0.15mm is for subsequent use, and concrete technology step is as follows:
Aluminium alloy brazing sheet 3 to be cut after removal superficial oxidation skin lies against on electronic air floating platform 1 by step 1.;
Step 2. starts vavuum pump 4 and bleeds to the microwell array 11 on electronic air floating platform 1, and smooth for weld tabs 3 to be cut is adsorbed on electronic air floating platform 1 by microwell array 11;
Step 3. selects the cutting parameter of ultraviolet laser 2 and electronic air floating platform 1;
Step 4. starts ultraviolet laser 2, electronic air floating platform 1 cuts aluminium alloy brazing sheet 3 to be cut;
After step 5. laser cutting, close ultraviolet laser 2, electronic air floating platform 1 and vavuum pump 4, electronic air floating platform 1 adsorption pressure reduces to 0Pa, takes out the soldering lug of well cutting.
In step 2, the adsorptive pressure of vavuum pump 4 can be set as any one value between-60KPa ~-120KPa.When adsorptive pressure is set as-80Pa time, adsorption effect is best.
In step 3, the cutting parameter that ultraviolet laser 2 is selected is that rated power is 5-100W, operating current is 10-100A, frequency is 10000-50000Hz, the movement velocity 0.1-5mm/s of electronic air floating platform 1.When the rated power of ultraviolet laser 2 be set as 10W, operating current is set as 34.5A, frequency setting is 30000Hz, electronic air floating platform 1 movement velocity is set as 0.6mm/s time, cutting effect is best.
In real work, first the aluminium alloy brazing sheet 3 of descale is positioned on electronic air floating platform 1, starts the vavuum pump 4 that is connected with electronic air floating platform 1 surface micropore array 11, be adsorbed in closely smooth for aluminium alloy brazing sheet 3 on electronic air floating platform 1.Again according to the design drawing of microwave components, aluminium alloy brazing sheet 3 is cut.In cutting process, utilize electronic air floating platform 1 to control the cutting path of ultraviolet laser 2, cut out the soldering lug with given shape.After Ultra-Violet Laser has cut, ultraviolet laser 2, electronic air floating platform 1 will be closed automatically, and after manual-lock vavuum pump 4, electronic air floating platform 1 adsorption pressure reduces to 0Pa, now take out the soldering lug cut.
Soldering lug after cutting, cut edge is clean, can directly apply to vacuum brazing without the need to after-treatment.Light microscopic observation is carried out to the soldering lug of well cutting, observed result as table 1, through to soldering lug cutting theoretical value, measured value relatively after the tolerance value result display that obtains, soldering lug precision is good, and error is within 10 μm.
Table 1
For above-mentioned cutting method, the present invention also provides a kind of electronic air floating platform 1, and electronic air floating platform 1 surface is provided with microwell array 11, and microwell array 11 is connected with vavuum pump 4.
In cutting process, electronic air floating platform 1 is adsorbed on electronic air floating platform 1 by its microwell array 11 of being connected with vavuum pump 4 of surface by closely smooth for aluminium alloy brazing sheet 3, electronic air floating platform 1 absorption affinity can reach-60KPa ~-120KPa, is fixed soldering lug without the need to special tooling.
The present invention also provides a kind of ultraviolet laser 2, is provided with sweep-up pipe 21 near the laser head of ultraviolet laser 2.
Utilize the suction of sweep-up pipe 21 constantly to be absorbed by the aluminium powder that cutting produces in cutting process, cutting process is clean, pollution-free.
More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; the just principle of the present invention described in above-described embodiment and description; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in claimed scope of the present invention.The protection domain of application claims is defined by appending claims and equivalent thereof.
Claims (7)
1. an aluminium alloy microwave components soldering lug processing method, is characterized in that: comprise the following steps:
11) the aluminium alloy brazing sheet to be cut after removal superficial oxidation skin is lain against on electronic air floating platform;
12) start vavuum pump to bleed to the microwell array on electronic air floating platform, smooth for aluminium alloy brazing sheet to be cut is adsorbed on electronic air floating platform;
13) cutting parameter of ultraviolet laser and electronic air floating platform is selected;
14) startup ultraviolet laser, electronic air floating platform cut aluminium alloy brazing sheet to be cut;
15) after laser cutting, close ultraviolet laser, electronic air floating platform and vavuum pump, electronic air floating platform adsorption pressure reduces to 0Pa, takes out the soldering lug of well cutting.
2. a kind of aluminium alloy microwave components soldering lug processing method according to claim 1, is characterized in that: step 12) in, the adsorptive pressure of described vavuum pump is-60KPa ~-120KPa.
3. a kind of aluminium alloy microwave components soldering lug processing method according to claim 2, is characterized in that: described adsorptive pressure is-80Pa.
4. a kind of aluminium alloy microwave components soldering lug processing method according to claim 1, it is characterized in that: step 13) in, described in the cutting parameter selected be: the rated power of ultraviolet laser is 5-100W, operating current is 10-100A, frequency is 10000-50000Hz; The movement velocity of electronic air floating platform is 0.1-5mm/s.
5. a kind of aluminium alloy microwave components soldering lug processing method according to claim 4, is characterized in that: the rated power of described ultraviolet laser is 10W, operating current is 34.5A, frequency is 30000Hz; The movement velocity of described electronic air floating platform is 0.6mm/s.
6. a kind of aluminium alloy microwave components soldering lug processing method according to claim 1, is characterized in that: described electronic air floating platform surface is provided with microwell array, and described microwell array is connected with vavuum pump.
7. a kind of aluminium alloy microwave components soldering lug processing method according to claim 1, is characterized in that: be provided with sweep-up pipe near the laser head of described ultraviolet laser.
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Cited By (7)
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| CN105479016A (en) * | 2015-12-30 | 2016-04-13 | 大族激光科技产业集团股份有限公司 | Laser cutting method for PCB containing copper layer |
| CN106670735A (en) * | 2016-08-31 | 2017-05-17 | 北京时代民芯科技有限公司 | High-precision welding piece cutting method |
| CN107234354A (en) * | 2017-08-03 | 2017-10-10 | 中国电子科技集团公司第三十八研究所 | A kind of vacuum brazing method applied to thin-wall construction |
| CN109079340A (en) * | 2018-09-26 | 2018-12-25 | 北京允升吉电子有限公司 | A kind of SMT template air bearing cutting equipment |
| CN110977189A (en) * | 2019-11-18 | 2020-04-10 | 济南邦德激光股份有限公司 | Laser cutting system and cutting method thereof |
| CN114700655A (en) * | 2022-04-11 | 2022-07-05 | 中国电子科技集团公司第三十八研究所 | Soldering lug processing device and processing method |
| CN115921901A (en) * | 2023-01-09 | 2023-04-07 | 安庆瑞迈特科技有限公司 | Method for removing burrs of 3D printing collimator with assistance of microwaves |
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| CN106670735A (en) * | 2016-08-31 | 2017-05-17 | 北京时代民芯科技有限公司 | High-precision welding piece cutting method |
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| CN107234354A (en) * | 2017-08-03 | 2017-10-10 | 中国电子科技集团公司第三十八研究所 | A kind of vacuum brazing method applied to thin-wall construction |
| CN107234354B (en) * | 2017-08-03 | 2019-06-04 | 中国电子科技集团公司第三十八研究所 | A kind of vacuum brazing method applied to thin-wall construction |
| CN109079340A (en) * | 2018-09-26 | 2018-12-25 | 北京允升吉电子有限公司 | A kind of SMT template air bearing cutting equipment |
| CN110977189A (en) * | 2019-11-18 | 2020-04-10 | 济南邦德激光股份有限公司 | Laser cutting system and cutting method thereof |
| CN114700655A (en) * | 2022-04-11 | 2022-07-05 | 中国电子科技集团公司第三十八研究所 | Soldering lug processing device and processing method |
| CN115921901A (en) * | 2023-01-09 | 2023-04-07 | 安庆瑞迈特科技有限公司 | Method for removing burrs of 3D printing collimator with assistance of microwaves |
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