CN102825371A - Clamp for accurately welding thin-wall alloy strip - Google Patents
Clamp for accurately welding thin-wall alloy strip Download PDFInfo
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- CN102825371A CN102825371A CN2012102675572A CN201210267557A CN102825371A CN 102825371 A CN102825371 A CN 102825371A CN 2012102675572 A CN2012102675572 A CN 2012102675572A CN 201210267557 A CN201210267557 A CN 201210267557A CN 102825371 A CN102825371 A CN 102825371A
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Abstract
The invention belongs to the technical field of welding and particularly relates to a clamp for accurately welding a thin-wall alloy strip. The clamp structurally comprises upper layer pressure plates, lower layer pressure plates, a copper cushion plate and a base, wherein the upper layer pressure plates are two rectangular pressure plates; the lower layer pressure plates are two rectangular pressure plates respectively with a wedged pressure plate head; the wedged pressure plate heads of the two rectangular pressure plates are oppositely arranged and form a compaction mechanism together with the copper cushion plate arranged below the lower layer pressure plates; a welding forming groove with the width of 2mm is milled in the center of the copper cushion plate along the length direction; back surface argon shield holes with the diameter of 1mm are also drilled in the center of the copper cushion plate at 50mm intervals; anti-interference grooves are respectively milled on the two wedged pressure plate heads; and the upper layer pressure plates are close to the edge of one side of the compaction mechanism; pushing bolts are assembled on the upper layer pressure plates at 40mm intervals; and a groove is arranged on each lower layer pressure plate corresponding to the middle position between every two pushing bolts along the width direction of the lower layer pressure plates. The clamp for accurately welding the thin-wall alloy strip is suitable for welding plates and ultrathin strips with the thickness smaller than 1.5mm and is beneficial to ensuring pre-welding assembly accuracy and optimizing welding process parameters.
Description
Technical field
The invention belongs to welding technology field, be specifically related to a kind of anchor clamps that are used for the accurate welding of thin wall alloy band.
Background technology
The circle of obturaging of novel aero-engine, W ring and mozzle are precision form spare, and its requirement to dimensional accuracy and deflection is very high, adopts conventional welding method to be difficult to realize their reliable connection and shaping.As the diameter of the circle part of obturaging is big, design size is strict; The liquid shaping butt welded seam quality requirement that rises is high, once adopted the Laser Welding method to carry out butt welding in the industry, but appearance of weld is relatively poor and the weld seam two ends exist the part to burn; Therefore, this part relies on import to satisfy the reseach of engine demand for a long time.
Adopt the MICROBEAM PLASMA WELDING method to solve above-mentioned technical problem; Micro beam plasma welding is a kind of fine welding method; It has characteristics such as quality of weld seam molding height, weld width narrow (weld width is suitable with thickness of slab usually) and post welding distortion amount are little, the welding that is particularly suitable for docking the thin wall alloy band of thickness below 0.3mm.But; Be welded with very strict matching requirements for the thin wall alloy band of thickness below 0.3mm; Its butt joint gap maximum can not surpass 20% of mother metal thickness, and the unfitness of butt joint maximum can not surpass 40% of mother metal thickness, burns otherwise very easily form; Therefore, the anchor clamps butt welding postforming and the quality thereof that are used for the welding of ultra-thin alloy strip steel rolled stock play a part very crucial.
Piano type weld jig commonly used at present is that the individual layer pressing plate is provided with a pressure head that is similar to the key shape; Be used for compressing specially welding of belt; But the shortcoming that this spline structure exists is can bring damage for ultra-thin strip itself, and the individual layer pressure plate structure is unfavorable at any time the clamping elasticity according to band alignment jig to be welded.
Summary of the invention
Can not satisfy the problem of the accurate welding demand of thin wall alloy band to existing weld jig; The present invention provides a kind of anchor clamps that are used for the accurate welding of thin wall alloy band; Can satisfy the butt joint matching requirements of ultra-thin materials; And quality of weld seam molding is high, deflection is minimum, and the weld properties data have reached mother metal respective performances index.
The anchor clamps that are used for the accurate welding of thin wall alloy band of the present invention comprise upper strata pressing plate, lower floor's pressing plate, copper pad and base; The upper strata pressing plate is assemblied on lower floor's pressing plate, and copper pad is embedded on the base, and upper strata pressing plate and lower floor pressing plate two ends have groove; Be fixed on the base through the set bolt that runs through groove; Wherein said upper strata pressing plate is the square pressing plates of two block lengths, and lower floor's pressing plate is two rectangle pressing plates with wedge pressure wrench, and the wedge pressure wrench of two lower floor's pressing plates is oppositely arranged; Form hold-down mechanism jointly with the copper pad that is positioned at lower floor pressing plate below; Copper pad central authorities are milled with the wide welding fabrication groove of 2mm along its length, and whenever are drilled with the argon shield hole, the back side that diameter is 1mm at a distance from 50mm, on two wedge pressure wrench, are milled with the anti-groove of interfering simultaneously; Described upper strata pressing plate is near a lateral edges of hold-down mechanism, and every separated 40mm is equipped with a puller bolt, on the centre position corresponding to per two puller bolts on lower floor's pressing plate, has groove along lower floor's pressing plate width.
Wherein said groove is along the length of the platen width direction diameter 8mm greater than set bolt.
Described anti-interference slot pitch copper pad surface 3mm, width is 2.5mm.
The width of groove is 7mm on the described lower floor pressing plate, and the degree of depth is 2/3 of a laminated plate thickness.
Characteristics of the present invention with producing effect are:
(1) pressing plate of the present invention is a double-decker, and pressing plate is equipped with row's bolt near welding locating slot one lateral edges on the upper strata, and pitch of bolts 40mm twists bolt downwards and holds out against lower plywood, can guarantee that the reliable applying of pressing plate and banjo fixing butt jointing compresses; The two ends of upper strata pressing plate and lower floor's pressing plate have groove; And the diameter of groove is greater than the diameter 8mm of puller bolt; Daylight opening can be carried out 0～8mm free adjustment like this; All be suitable for for sheet material, the ultra-thin strip of throat thickness below 1.5mm, help guaranteeing preceding assembly precision of weldering and welding condition optimization;
(2) lower floor of the present invention pressing plate is whole compressing structure; Compare with traditional piano type anchor clamps and to help guaranteeing the integral rigidity of banjo fixing butt jointing when pressing plate presses down, and avoid of the damage of key pressure head, simultaneously ultra-thin strip; Slot in the laminated broad ways; Reduced the local stiffness of the corresponding puller bolt of lower plywood position like this, guaranteed pressing plate for banjo fixing butt jointing evenly, reliably compress, thrust can regulate through hold-down bolt;
(3) being milled with the anti-groove of interfering on the wedge pressure wrench of lower floor's pressing plate, is example with welding 0.2mm band, and daylight opening is 3mm, adds the anti-groove of interfering of 5mm altogether, can use maximum torch neck to be 8mm like this, helps strengthening the argon shield effect of butt welded seam.
Description of drawings
Fig. 1 is the structural front view that is used for the anchor clamps of the accurate welding of thin wall alloy band of the present invention;
Fig. 2 is the structure vertical view that is used for the anchor clamps of the accurate welding of thin wall alloy band of the present invention;
Fig. 3 is the structure right view that is used for the anchor clamps of the accurate welding of thin wall alloy band of the present invention;
Wherein, 1: the upper strata pressing plate; 2: lower floor's pressing plate; 3: copper pad; 4: base; 5: set bolt; 6: puller bolt; 7: groove; 8: groove; 9: the anti-groove of interfering; 10: the welding fabrication groove.
The specific embodiment
The anchor clamps that are used for the accurate welding of thin wall alloy band comprise upper strata pressing plate (1), lower floor's pressing plate (2), copper pad (3) and base (4); Upper strata pressing plate (1) through bolts assemblies as shown in the figure on lower floor's pressing plate (2); Copper pad (3) is embedded in (4) on the base; Upper strata pressing plate (1) and lower floor's pressing plate (2) two ends have groove (8), are fixed on the base (4) through the set bolt (5) that runs through groove, and wherein said upper strata pressing plate (1) is the square pressing plates of two block lengths; Lower floor's pressing plate (2) is two rectangle pressing plates with wedge pressure wrench; The wedge pressure wrench of two lower floor's pressing plates (2) is oppositely arranged, and forms hold-down mechanism jointly with the copper pad (3) that is positioned at lower floor's pressing plate (2) below, and it is 2mm welding fabrication groove (10) that copper pad central authorities are milled with width along its length; And whenever be drilled with the argon shield hole, the back side that diameter is 1mm at a distance from 50mm, on two wedge pressure wrench, be milled with the anti-groove (9) of interfering simultaneously; Described upper strata pressing plate (1) is near a lateral edges of welding locating slot; Every separated 40mm is equipped with a puller bolt (6); Lower floor's pressing plate (2) is gone up the centre position corresponding to per two puller bolts (6), has groove (7) along lower floor's pressing plate (2) width.
Wherein said groove (8) is along the length of the platen width direction diameter 8mm greater than set bolt (5).
Described anti-interference groove (9) is apart from welding locating slot bottom surface 3mm, and width is 2.5mm.
The width that described lower floor pressing plate (2) is gone up groove (7) is 7mm, and the degree of depth is 2/3 of lower floor's pressing plate (2) thickness.
Adopt the above-mentioned weld jig erection welding of the invention design circle part of obturaging, concrete steps are following:
The loop material of obturaging is the GH738 alloy strip steel rolled stock, and supply of material state is an annealed state, and final condition of heat treatment is solid solution+aging state, and its main chemical compositions is seen table 1.
The main chemical compositions of table 1 GH738 alloy cold-strip
(1) prepares before the weldering
Adopt the cut blanking before the weldering, ribbon dimension is 2580mm * 100mm, and subsidiary 50mm * 30mm welding test piece is no less than 4; Be used for the technological parameter demonstration test; The about 3mm in butt joint end face and joint both sides zone adopts the stainless steel wire brush to carry out polishing before the weldering, removes surface oxide layer and metal luster; With acetone or alcohol weld jig fitting surface and preweld cleaning zone are cleaned, remove greasy dirt and other exotic.
(2) assembling compresses
Test piece to be welded or part are placed on the weld jig, and joint is fixed a side test piece or part single face earlier over against welding fabrication groove central authorities; Adjustment upper strata pressing plate (1) and joint spacing are tightened the set bolt (5) at pressing plate two ends, upper strata between 2.5～3mm, fine setting puller bolt (6); Guarantee evenly to compress, opposite side test piece or part are compressed by assembling with quadrat method again, should guarantee therebetween has certain applying power as far as possible between banjo fixing butt jointing; Help reducing the gap; Guarantee assembling butt joint tolerance clearance, prevent to burn, adjust two puller bolts (5) at last simultaneously; Test piece or part and copper pad (3) are fitted well everywhere, guarantee that the assembling misalignment is at Measurement Allowance.
(3) welding machine and robot instruction
Inspection tungsten electrode scaling loss situation should in time grind tungsten electrode when finding most advanced and sophisticated oxidation of tungsten electrode even scaling loss blackout again before the weldering, and inspection welding machine water-cooled, gas circuit and fault alarm etc. guarantee not have any problem.
Robot path is carried out teaching, guarantee that mobile route does not depart from joint to be welded, basic programming instruction is following:
ArcLStart?p1,?v20,?seam1,?weld1,?fine,?tweldgun;
ArcLEnd?p2,?v20,?seam1,?weld1,?fine,?tweldgun;
(4) technological parameter checking and welding
The technological parameter checking is carried out in the test piece to be welded that assembles earlier, generally tested 2 pairs at least, guarantee technological parameter stability, when the formal part of welding, install run-on tab additional and receive the arc plate in the starting the arc, receipts arc position, concrete welding condition is seen table 2.
Table 2 MICROBEAM PLASMA WELDING high temperature alloy test technology parameter
(5) visual examination
The weld appearance of visual examination test piece or part and mother metal should be slick and sly excessively, the welding point surface is answered flawless, is burnt, overlap and spatter thing, the dislocation of banjo fixing butt jointing is not more than 20% of mother metal thickness.
(6) penetration inspection
Press the permeability of HB/Z61-1998 inspection weld seam, face of weld does not have linear the demonstration.
Claims (4)
1. anchor clamps that are used for the accurate welding of thin wall alloy band is characterized in that comprising upper strata pressing plate, lower floor's pressing plate, copper pad and base, and the upper strata pressing plate is assemblied on lower floor's pressing plate; Copper pad is embedded on the base; Upper strata pressing plate and lower floor pressing plate two ends have groove, are fixed on the base through the set bolt that runs through groove, and wherein said upper strata pressing plate is the square pressing plates of two block lengths; Lower floor's pressing plate is two rectangle pressing plates with wedge pressure wrench; The wedge pressure wrench of two lower floor's pressing plates is oppositely arranged, and forms hold-down mechanism jointly with the copper pad that is positioned at lower floor pressing plate below, and copper pad central authorities are milled with the wide welding fabrication groove of 2mm along its length; And whenever be drilled with the argon shield hole, the back side that diameter is 1mm at a distance from 50mm, on two wedge pressure wrench, be milled with the anti-groove of interfering simultaneously; Described upper strata pressing plate is near a lateral edges of hold-down mechanism, and every separated 40mm is equipped with a puller bolt, on the centre position corresponding to per two puller bolts on lower floor's pressing plate, has groove along lower floor's pressing plate width.
2. a kind of anchor clamps that are used for the accurate welding of thin wall alloy band according to claim 1 is characterized in that described groove is along the length of the platen width direction diameter 8mm greater than set bolt.
3. a kind of anchor clamps that are used for the accurate welding of thin wall alloy band according to claim 1 is characterized in that described anti-interference slot pitch copper pad surface 3mm, and width is 2.5mm.
4. a kind of anchor clamps that are used for the accurate welding of thin wall alloy band according to claim 1, the width that it is characterized in that groove on the described lower floor pressing plate is 7mm, the degree of depth is 2/3 of a laminated plate thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210267557.2A CN102825371B (en) | 2012-07-30 | 2012-07-30 | Clamp for accurately welding thin-wall alloy strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210267557.2A CN102825371B (en) | 2012-07-30 | 2012-07-30 | Clamp for accurately welding thin-wall alloy strip |
Publications (2)
| Publication Number | Publication Date |
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| CN102825371A true CN102825371A (en) | 2012-12-19 |
| CN102825371B CN102825371B (en) | 2014-12-24 |
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| CN201210267557.2A Expired - Fee Related CN102825371B (en) | 2012-07-30 | 2012-07-30 | Clamp for accurately welding thin-wall alloy strip |
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| CN103302387A (en) * | 2013-05-31 | 2013-09-18 | 上海宝冶集团有限公司 | Easily-dismountable welding composite baffle |
| CN104400283A (en) * | 2014-09-25 | 2015-03-11 | 北京航星机器制造有限公司 | Welding device for titanium alloy skin structural member for framework |
| CN104439665A (en) * | 2014-10-28 | 2015-03-25 | 沈阳黎明航空发动机(集团)有限责任公司 | Ultrathin cold air flow guide pipe precise welding method |
| CN104588928A (en) * | 2014-11-28 | 2015-05-06 | 柳州振业焊接机电设备制造有限公司 | Copper base plate of full-automatic conveying and welding device |
| CN105364314A (en) * | 2015-09-15 | 2016-03-02 | 南昌航空大学 | Welding method for obtaining amorphous connector for FeSiB amorphous strip |
| CN105665999A (en) * | 2016-03-29 | 2016-06-15 | 苏州市合叶精密机械有限公司 | Welding clamp applicable to long seam thin plate |
| CN106541609A (en) * | 2016-12-21 | 2017-03-29 | 浙江道明光电科技有限公司 | The pressuring flat device and its flattening method of sheet edge |
| CN107584197A (en) * | 2017-07-31 | 2018-01-16 | 武汉船用机械有限责任公司 | A kind of plate sheet welding fixture |
| CN106808129B (en) * | 2015-12-01 | 2018-08-17 | 中国人民解放军装甲兵工程学院 | A kind of contravariant clamp for thick plates |
| CN108453401A (en) * | 2018-05-29 | 2018-08-28 | 沈阳飞机工业（集团）有限公司 | Multi-functional automatic displacement auxiliary welding device |
| CN109402341A (en) * | 2018-12-10 | 2019-03-01 | 贵州航天精工制造有限公司 | A kind of heat treatment method improving GH738 self-locking nut locking property |
| CN109434272A (en) * | 2018-11-01 | 2019-03-08 | 西北工业大学 | Aluminium alloy thin-walled box body packaging fixture and the method that aluminium alloy thin-walled box body is welded using the fixture |
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| CN110977278A (en) * | 2019-11-15 | 2020-04-10 | 上海新力动力设备研究所 | Solid rocket engine shell cable cover support welding butt joint device |
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| CN111085766A (en) * | 2019-12-27 | 2020-05-01 | 哈尔滨工业大学 | Thin-plate NiTi alloy electron beam welding quenching solidification fine-grain device and welding method thereof |
| CN112222716A (en) * | 2020-09-11 | 2021-01-15 | 中联重科股份有限公司 | Welding pad device and welding pad system |
| CN112847200A (en) * | 2021-01-12 | 2021-05-28 | 苏州丰航精密金属有限公司 | Special fixture for easily-deformed parts |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |
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Granted publication date: 20141224 Termination date: 20200730 |