CN105855700A - Protective fixture for welding of travelling-wave tube welded antenna - Google Patents
Protective fixture for welding of travelling-wave tube welded antenna Download PDFInfo
- Publication number
- CN105855700A CN105855700A CN201610413317.7A CN201610413317A CN105855700A CN 105855700 A CN105855700 A CN 105855700A CN 201610413317 A CN201610413317 A CN 201610413317A CN 105855700 A CN105855700 A CN 105855700A
- Authority
- CN
- China
- Prior art keywords
- travelling
- welding
- protective cover
- helical line
- wave tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
- B23K26/123—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an atmosphere of particular gases
-
- 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
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
- B23K26/127—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an enclosure
-
- 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
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a protective fixture for welding of a travelling-wave tube welded antenna. The protective fixture is a generally C-shaped cylindrical chamber and comprises a base and a protective cover, the base and the protective cover are disposed respectively at two ends of the protective fixture, and the base and the protective cover are laterally provided with axially through welding ports. The problem that molten drops attach to the inner diameter of a spiral wire to block passage of electron beams, leading to poorer focusing of a travelling-wave tube, can be effectively avoided; the problem that dropping of molten drops cause travelling-wave tube sparking, oscillation and product failure is avoided; the problems that loss increase causes to initial output power reduction due to loss increase and later heat loss gathering causes vicious accumulation, temperature rise and travelling-wave tube burnout are avoided; the problems that laser welding of an energy transfer component area in the travelling-wave tube causes metal vapor contamination and spattering of metal molten drops causes contamination are solved, and the protective fixture is applicable to miniature welding of a miniature travelling-wave tube with greater than times of bore diameter depth ratio and small welding space.
Description
Technical field
The present invention relates to a kind of fixture, the fixture of a kind of travelling-wave tubes welding antenna.
Background technology
As the critical component delivery of energy assembly of energy input and output in travelling-wave tubes, its welding generally uses laser by travelling-wave tubes
The inner wire (being referred to as antenna) of middle helix termination and delivery of energy assembly platinum band transition or filling flux weld.But
Travelling-wave tubes to small volume, particularly Ku, Ka wave band travelling-wave tubes, because travelling-wave tubes welding wire bonding locus, sky is the thinnest
Micro-, diameter of bore is tiny to 0.7mm, and bonding area is 0.1 mm2, and bore depth reaches 10 mm, aperture ratio deeply is high, belongs to allusion quotation
The miniature welding of type, its welding quality directly affects reliability and the electric parameter of travelling-wave tubes.The sky of travelling-wave tubes welding at present wire bonding
Connecing technique uses argon gas to protect, and reaches solder side by jet hole with certain injection power injection, disperses metal steam
Vapour and metal drop sputtering, but to some travelling-wave tubes this at aperture ratio more than up to 10 times deeply, for accurately welding
Connect, the location of workpiece need to be regulated, but now, the jet hole of protective gas is difficult to adjusted in concert to better position, protective gas effect
Unsatisfactory in the effect of weld, remain more metallic vapour when welding and pollute blessing bar, and also metal liquid
Molten drop sputtering molten drop is attached on helix internal diameter, generally with shelving pin and reject the metal drop of attachment on this sampling technology, then
With tiny silk wiping metallic vapour, but this kind of mode is difficult to thoroughly to remove clean, and fragile fine structure at this, stays
Lower hidden danger, concrete sum up existing welding and can cause following problem:
1) laser welding is easily generated metallic vapour pollution and metal liquid molten drop sputters, and molten drop is attached on helix internal diameter, resistance
The circulation of plug electronics note, makes travelling-wave tubes focus on and is deteriorated；
2) in use, molten drop comes off, and travelling-wave tubes will be caused to strike sparks, vibration, product failure；
3) metallic vapour pollutes, and is attached on the blessing bar of near zone on delivery of energy assembly, and this area loss increases, and the initial stage occurs
Power output lowers, and along with heat consumption is assembled and pernicious accumulation, temperature raises, and burns travelling-wave tubes and lost efficacy time serious.
Therefore this welding region is protected, it is to avoid metallic vapour pollutes and metal liquid molten drop sputtering residual is to be badly in need of solving
Key issue.
Summary of the invention
The present invention is directed to the problems referred to above, it is provided that the welding protection fixture of a kind of travelling-wave tubes welding antenna, described welding is protected
Retaining clip has generally " C " shaped cylindrical cavity, and described welding protection fixture includes base and protective cover, described base and protective cover
Be respectively arranged at the two ends of welding protection fixture, described base and protective cover side be provided with axially through soldering opening, the described end
The external diameter of seat is more than travelling tube helical line external diameter less than travelling tube helical line internal diameter 0.1～0.06mm, the external diameter of described protective cover
0.02～0.04mm, the internal diameter of protective cover is less than travelling tube helical line internal diameter 0.3～0.26mm；The height of protective cover is delivery of energy group
Part centre-to-centre spacing supporting rod proximal height adds 0.45～0.55mm, and the distance of the soldering opening both sides of protective cover compares travelling tube helical line
Adjacent two add the adjacent cusps of carrier strip apart from little 0.03～0.07mm；Described substructure height is 2 times of pitch of travelling tube helical line.
Preferably, the external diameter of described base is less than travelling tube helical line internal diameter 0.1mm, and the external diameter of protective cover is more than travelling-wave tubes
Helix external diameter 0.02mm, the internal diameter of protective cover is less than travelling tube helical line internal diameter 0.3mm, and the height of protective cover is delivery of energy assembly
Centre-to-centre spacing supporting rod proximal height adds 0.5mm, and the height of welding protection fixture is 2 times of pitch of travelling tube helical line and delivery of energy group
Part centre-to-centre spacing supporting rod proximal height sum adds 0.5mm, and the distance of the soldering opening both sides of protective cover compares travelling tube helical line
Adjacent two add the adjacent cusps of carrier strip apart from little 0.05mm.
The welding protection fixture of described travelling-wave tubes welding antenna is made up of Mo, this is because molybdenum has fusing point height,
Consistency is high, the preferable feature of machining property, it is easy to Precision Machining becomes tiny fixture, and is applicable to laser high-temperature soldering bar
Part.
The using method of the welding protection fixture of described travelling-wave tubes welding antenna is as follows:
1) before laser welding, with most advanced and sophisticated tiny tweezers, travelling-wave tubes is welded the welding protection cover loading travelling-wave tubes delivery of energy of antenna
Assembly laser welding region, notes by one end big for protective cover external diameter upwards.
2) finely-tuned protection cover position, faces antenna place to be welded by the soldering opening of protective cover, the soldering opening of protective cover
Two side all shelters from and adds carrier strip near day wire bonding place to be welded.
3) notice during welding that protective cover is not blown skew by protective gas, keep the soldering opening of protective cover to face antenna and treat
Weld, takes out protective cover with most advanced and sophisticated tiny tweezers after welding again.
Compared with prior art, the method have the advantages that
It is prevented effectively from molten drop to be attached on helix internal diameter, prevents from blocking the circulation of electronics note, make travelling-wave tubes focus on and be deteriorated；Avoid
Molten drop comes off and causes travelling-wave tubes to strike sparks, vibration, product failure；More apparent alleviate near metallic vapour is attached on delivery of energy assembly
On the blessing bar in region, it is to avoid the initial stage power output that this area loss increases and occurs lowers, the later stage draws along with heat consumption is assembled
Play pernicious accumulation, temperature raises and burns travelling-wave tubes.Solve delivery of energy device region laser welding in travelling-wave tubes and produce metal steam
Contaminated vapor and the pollution problem of metal liquid molten drop sputtering, can apply to diameter of bore depth ratio and be up to the welding of more than 10 times
The miniature welding of the mini-TWT of narrow space.
Accompanying drawing explanation
The welding protection fixture sectional view of Fig. 1 travelling-wave tubes of the present invention welding antenna；
The welding protection fixture top view of Fig. 2 travelling-wave tubes of the present invention welding antenna；
Schematic diagram when the welding protection fixture of Fig. 3 travelling-wave tubes of the present invention welding antenna uses；
Fig. 4 travelling-wave tubes of the present invention delivery of energy assembly centre-to-centre spacing supporting rod proximal height schematic diagram；
At Fig. 5 travelling-wave tubes of the present invention delivery of energy assembly, adjacent two add the distance between two tips schematic diagram of carrier strip.
In above-mentioned accompanying drawing, component names corresponding to reference is as follows:
1, the welding protection fixture of travelling-wave tubes welding antenna；2, protective cover；3, base；4, soldering opening；5, delivery of energy assembly；6, spiral
Line；7, supporting rod；8, carrier strip is added；H, delivery of energy assembly centre-to-centre spacing supporting rod proximal height；I, travelling tube helical line adjacent two loads
The adjacent cusps distance of bar.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings, and embodiments of the present invention include but not limited to
The following example.
Embodiment one
The welding protection fixture of the travelling-wave tubes welding antenna described in embodiment one, described travelling-wave tubes is Ku wave band travelling-wave tubes, institute
Stating the generally " C " shaped cylindrical cavity of welding protection fixture, described welding protection fixture includes base and protective cover, described base
With the two ends that protective cover is respectively arranged at welding protection fixture, described base and protective cover side be provided with axially through welding
Mouthful, the external diameter of described base is less than travelling tube helical line internal diameter 0.1mm, and in the present embodiment, the external diameter of base is φ 1.3mm, row ripple
Pipe helix internal diameter is φ 1.4mm；The external diameter of protective cover is more than travelling tube helical line external diameter 0.02mm, and the internal diameter of protective cover is less than
Travelling tube helical line internal diameter 0.3mm, the height of protective cover is that delivery of energy assembly centre-to-centre spacing supporting rod proximal height is plus 0.5mm, weldering
The height connecing shield jig is that 2 times of pitch of travelling tube helical line are added with delivery of energy assembly centre-to-centre spacing supporting rod proximal height sum
0.5mm, the distance of the soldering opening both sides of protective cover adds the adjacent cusps distance of carrier strip less than travelling tube helical line adjacent two
0.05mm；In the present embodiment, the external diameter of protective cover is φ 1.7mm, and the internal diameter of protective cover is φ 1.1mm, the height of protective cover
1.5mm, substructure height is that in 1.24mm(the present embodiment, travelling tube helical line pitch is 0.62mm, and delivery of energy assembly centre-to-centre spacing clamps
Bar proximal height is 1mm), in the present embodiment, the distance of the soldering opening both sides of protective cover is that the two of 1mm(the present embodiment travelling-wave tubes adds
Carrier strip distance between two tips is 1.05mm).
The using method of the welding protection fixture of described travelling-wave tubes welding antenna is as follows:
1) before laser welding, with the tiny tweezers in tip, travelling-wave tubes welding the welding protection fixture of antenna, to load travelling-wave tubes defeated
Energy assembly laser welding region, notes by one end of protective cover upwards.
2) finely-tuned protection cover position, by the soldering opening of protective cover facing to antenna place to be welded, the two of the soldering opening of protective cover
Sidewall all shelters from and adds carrier strip near day wire bonding place to be welded.
3) notice during welding that protective cover is not blown skew by protective gas, keep the soldering opening of protective cover to face antenna and treat
Weld, takes out protective cover with most advanced and sophisticated tiny tweezers after welding again.
Compared with prior art, the present embodiment has the advantages that
It is prevented effectively from molten drop to be attached on helix internal diameter, prevents from blocking the circulation of electronics note, make travelling-wave tubes focus on and be deteriorated；Avoid
Molten drop comes off and causes travelling-wave tubes to strike sparks, vibration, product failure；More apparent alleviate near metallic vapour is attached on delivery of energy assembly
On the blessing bar in region, it is to avoid the initial stage power output that this area loss increases and occurs lowers, the later stage draws along with heat consumption is assembled
Play pernicious accumulation, temperature raises and burns travelling-wave tubes.Solve delivery of energy device region laser welding in travelling-wave tubes and produce metal steam
Contaminated vapor and the pollution problem of metal liquid molten drop sputtering, can apply to diameter of bore depth ratio and be up to the welding of more than 10 times
The miniature welding of the mini-TWT of narrow space.
Above-described embodiment is only the preferred embodiments of the present invention, not limiting the scope of the invention, as long as using
The design principle of this reality invention, and carry out non-creativeness work on this basis and the change made, the present invention all should be belonged to
Protection domain within.
Claims (3)
1. the welding protection fixture of a travelling-wave tubes welding antenna, it is characterised in that described welding protection fixture is generally " C " shaped
Cylindrical cavity, described welding protection fixture includes that base and protective cover, described base and protective cover are respectively arranged at welding and protect
Retaining clip tool two ends, described base and protective cover side be provided with axially through soldering opening, the external diameter of described base be less than row ripple
Pipe helix internal diameter 0.1～0.06mm, the external diameter of described protective cover is more than travelling tube helical line external diameter 0.02～0.04mm, protection
The internal diameter of cover is less than travelling tube helical line internal diameter 0.3～0.26mm；The height of protective cover is that delivery of energy assembly centre-to-centre spacing supporting rod is near
End height is plus 0.45～0.55mm, and the distance of the soldering opening both sides of protective cover adjacent two adds the phase of carrier strip than travelling tube helical line
Adjacent distance between two tips little 0.03～0.07mm；Described substructure height is 2 times of pitch of travelling tube helical line.
The welding protection fixture of a kind of travelling-wave tubes the most as claimed in claim 1 welding antenna, it is characterised in that described base
External diameter is less than travelling tube helical line internal diameter 0.1mm, and the external diameter of protective cover is more than travelling tube helical line external diameter 0.02mm, protective cover
Internal diameter is less than travelling tube helical line internal diameter 0.3mm, and the height of protective cover is that delivery of energy assembly centre-to-centre spacing supporting rod proximal height adds
0.5mm, the height of welding protection fixture be 2 times of pitch of travelling tube helical line with delivery of energy assembly centre-to-centre spacing supporting rod proximal height it
With add 0.5mm, the distance of the soldering opening both sides of protective cover than travelling tube helical line adjacent two add the adjacent cusps of carrier strip away from
From little 0.05mm.
The welding protection fixture of a kind of travelling-wave tubes the most as claimed in claim 1 or 2 welding antenna, it is characterised in that described weldering
Connect shield jig to be made up of Mo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610413317.7A CN105855700B (en) | 2016-06-14 | 2016-06-14 | Travelling-wave tubes welds the welding protection fixture of antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610413317.7A CN105855700B (en) | 2016-06-14 | 2016-06-14 | Travelling-wave tubes welds the welding protection fixture of antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105855700A true CN105855700A (en) | 2016-08-17 |
| CN105855700B CN105855700B (en) | 2017-10-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610413317.7A Active CN105855700B (en) | 2016-06-14 | 2016-06-14 | Travelling-wave tubes welds the welding protection fixture of antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105855700B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108422074A (en) * | 2018-05-11 | 2018-08-21 | 天津航天机电设备研究所 | A kind of spiral weld electro-beam welding clamper and heat dissipation tool |
| US11879734B2 (en) | 2022-05-25 | 2024-01-23 | Caterpillar Inc. | Laser projection hardware positional device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62143343A (en) * | 1985-12-18 | 1987-06-26 | Toshiba Corp | Traveling-wave tube and manufacture thereof |
| US20090009086A1 (en) * | 2007-07-06 | 2009-01-08 | Nec Microwave Tube, Ltd | Traveling wave tube |
| CN202356812U (en) * | 2011-09-29 | 2012-08-01 | 安徽华东光电技术研究所 | Traveling wave tube collector welding clamp |
| CN205684902U (en) * | 2016-06-14 | 2016-11-16 | 成都国光电气股份有限公司 | The welding protection fixture of travelling-wave tube welding antenna |
-
2016
- 2016-06-14 CN CN201610413317.7A patent/CN105855700B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62143343A (en) * | 1985-12-18 | 1987-06-26 | Toshiba Corp | Traveling-wave tube and manufacture thereof |
| US20090009086A1 (en) * | 2007-07-06 | 2009-01-08 | Nec Microwave Tube, Ltd | Traveling wave tube |
| CN202356812U (en) * | 2011-09-29 | 2012-08-01 | 安徽华东光电技术研究所 | Traveling wave tube collector welding clamp |
| CN205684902U (en) * | 2016-06-14 | 2016-11-16 | 成都国光电气股份有限公司 | The welding protection fixture of travelling-wave tube welding antenna |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108422074A (en) * | 2018-05-11 | 2018-08-21 | 天津航天机电设备研究所 | A kind of spiral weld electro-beam welding clamper and heat dissipation tool |
| CN108422074B (en) * | 2018-05-11 | 2023-11-10 | 天津航天机电设备研究所 | Spiral weld electron beam welding fixture and heat dissipation tool |
| US11879734B2 (en) | 2022-05-25 | 2024-01-23 | Caterpillar Inc. | Laser projection hardware positional device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105855700B (en) | 2017-10-13 |
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