CN203076794U - Laser welding clamp with back protection function - Google Patents
Laser welding clamp with back protection function Download PDFInfo
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- CN203076794U CN203076794U CN 201220106733 CN201220106733U CN203076794U CN 203076794 U CN203076794 U CN 203076794U CN 201220106733 CN201220106733 CN 201220106733 CN 201220106733 U CN201220106733 U CN 201220106733U CN 203076794 U CN203076794 U CN 203076794U
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Abstract
A laser welding clamp with a back protection function comprises a fixed base board (1), a left positioning board (5) and a right positioning board (4). The left positioning board (4) and the right positioning board (5) are placed at the upper part of the laser welding clamp and are fixed with the fixed base board (1) through screws. The laser welding clamp is characterized in that: the center of the fixed base board (1) is provided with a protective gas through hole groove (2); after a planar workpiece (7) to be welded is in butt joint with the groove and laser welding is performed, a gas introducing nozzle (3) is equipped in the protective gas through hole groove (2); and insert protective gas is introduced into the gas introducing nozzle (3) for protecting the back surface of the welding seam. According to the laser welding clamp, because the front surface and the back surface of the welding seam are protected, front-and-back double-surface welding can be performed on the welding board. An oblique surface fixing structure which decomposes a force is adopted, thereby greatly simplifying the structure of a laser welding tool. Furthermore a segmented welding seam back-protection function of separating whole into small segments is adopted. The laser welding clamp is suitable for the welding seams with different lengths for protecting the laser welding seam from two surfaces, so that the field of the laser welding material is widened and the laser processing capability is furthermore developed.
Description
Technical field
The utility model relates to the technical field that is applied to various laser weld, can carry out the anchor clamps of laser assembly solder and a kind of fixture for laser welding with back of the body defencive function of frock design to Automobile Plate, deck peculiar to vessel, aircraft deck, cold hot rolled plate, Precision Machinery Elements plate, Aero-Space special titanium alloy sheet material.
Background technology
Owing to the spatial altitude coherence of its laser, its application point that focuses in the commissure is minimum, is easy to pass workpiece gap, and welding process can't be carried out in the laser beam welding.Laser weld belongs to Precision Machining, therefore particularly important for the jig Design of laser weld workpiece, the conventional laser weld jig adopts fixation twice, once be that centering is fixed up and down, once fix for left and right sides centering, adopt hydraulic pressure or pneumatic fixing, twice position fixing process interacts and makes and regulate very complicated difficult adjustment, and laser weld welding Design of fixture system is huge and complicated.At present China carries out the laser weld technique for applying and only notes protection to the laser welded seam front in addition; and ignore back-protective for complete penetraction and fusion in welding type weld seam; for some specific alloy materials (titanium alloy); it is under the situation of through welding; the back of weld metal is easy to materials such as the middle oxygen, hydrogen, moisture of air and reacts to each other, and generates other material, thereby causes the weld seam metallurgical imperfection; and have a strong impact on the mechanical property of final weld seam, laser welding process was lost efficacy.So the laser welding process for the complete penetraction and fusion in welding type must also be taked inert gas shielding to its back of weld.
Summary of the invention
At above deficiency; the purpose of this utility model is to provide a kind of fixture for laser welding with back of the body defencive function; these anchor clamps can simple and effectively satisfy the frock requirement of laser weld to the weldment precision; can also provide metallurgical atmosphere of inert gases protection to complete penetraction and fusion in welding type back of weld simultaneously; has compact conformation; the size conversion is various, adapts to different plates, the assembly precision advantages of higher.Can be widely used in the laser weld frock requirement of various industry manufacture field such as Automobile Plate, deck peculiar to vessel, aircraft deck, cold hot rolled plate, Precision Machinery Elements plate, special Aero-Space special-purpose board.
The technical solution adopted in the utility model is: a kind of fixture for laser welding with back of the body protection gas; comprise fixed base plate, left location-plate and right location-plate; flat panel workpieces symmetry to be welded is placed and is fixed on the base plate; left and right sides location-plate is placed on it and fixes with alignment pin and fixed base plate; it is characterized in that: the center of described fixed base plate has a protection vent hole groove; flat panel workpieces to be welded is docked at carries out laser weld on its groove; the ventilation mouth is located in the protection vent hole groove; feed inert protective gas in the ventilation mouth, the butt welded seam back side is protected.
One side of inclined-plane, described left and right sides location-plate is respectively equipped with the inclined-plane, has locating hole in the inclined-plane, and alignment pin passes locating hole and flat panel workpieces with location-plate and fixed base plate positioning and fixing.
The bevel angle Φ value scope of inclined-plane, described left and right sides location-plate is 15 °～75.
The joint of described laser weld is butt joint welding or overlap joint welding, and weld seam is the through welding type, and fusion penetration and welded blank thickness ratio scope are 0.5～1.
Described protection vent hole groove can be one, also can be a plurality of.
The light source of described laser weld comprises semiconductor laser, optical fiber laser, video disc laser instrument, all solid state laser, lamp pump solid state laser, carbon dioxide laser, and the welding of the recombination laser of above various laser and other thermal source.
The utility model; protection is all arranged owing to weld seam is positive and negative; can adopt the inclined-plane fixed structure that decomposes mechanics to the front-back two-sided welding of welded blank; make the laser weld tool structure greatly simplify; and adopt the segmentation back of the body protection weld seam function that breaks the whole up into parts, be suitable for the weld seam of different length flexibly, two-sided protection laser welded seam; make that the laser welded material field is expanded, the laser instrument working ability obtains deep exploitation.These anchor clamps can simple and effectively satisfy the frock requirement of laser weld to the weldment precision; can also provide metallurgical atmosphere of inert gases protection to complete penetraction and fusion in welding type back of weld simultaneously, have compact conformation, the size conversion is various; adapt to different plates, the assembly precision advantages of higher.Can be widely used in the laser weld frock requirement of various industry manufacture field such as Automobile Plate, deck peculiar to vessel, aircraft deck, cold hot rolled plate, Precision Machinery Elements plate, special Aero-Space special-purpose board.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the cutaway view of Fig. 1.
Fig. 3 is inclined-plane, a left and right sides location-plate bevel angle mechanics decomposing schematic representation.
Fig. 4 is protection vent hole slot cross-section figure.
The specific embodiment
Know by Fig. 1; a kind of fixture for laser welding with back of the body protection gas; comprise fixed base plate 1, left location-plate 5 and right location-plate 4; left and right sides location-plate 4,5 is separately positioned on the top of fixed base plate 1 and fixes with alignment pin 6; the center of fixed base plate 1 has a protection vent hole groove 2, and flat panel workpieces 7 to be welded is carried out laser weld on its groove, and ventilation mouth 3 is located in the protection vent hole groove 2; feed inert protective gas in the ventilation mouth 3, the butt welded seam back side is protected.
Being known by Fig. 2, is the cutaway view of Fig. 1.Two flat panel workpieces 7 symmetries to be welded are placed on the center of fixed base plate 1, the both sides of inclined-plane, left and right sides location-plate 4,5 are respectively equipped with the inclined-plane, have locating hole in the inclined-plane, alignment pin 6 passes locating hole and flat panel workpieces 7 with inclined-plane, left and right sides location-plate 4,5 and fixed base plate 1 positioning and fixing.Alignment pin 6 can be to be threaded with fixed base plate 1, or the hydraulic pressure contact connects.Protection vent hole groove 2 links to each other with ventilation mouth 3 under the center of fixed base plate 1, weld seam, and welding point is laser butt joint welding and overlap welding joint, and weld seam is the through welding type, exports inert protective gas in the welding process and protects complete penetraction and fusion in welding type back of weld.During the laser welded seam complete penetraction and fusion in welding; have part laser and heat radiation and be delivered to protection vent hole groove 2 under the weld seam; for allowing the safe handling of the type device; 2 employings of protection vent hole groove have high reflectance to laser and have the metal material of high thermal conductivity coefficient, guarantee that the long-term stability of device is used.For through welding type weld seam, weld penetration and welded blank thickness ratio scope are 0.5～1, have enlarged laser maximum weld fusion penetration.
Being known by Fig. 3, is inclined-plane, left and right sides location-plate bevel angle mechanics decomposing schematic representation.The bevel angle Φ value scope of inclined-plane, left and right sides location-plate 4,5 is 15 °～75 °.Bevel angle Φ is according to the welding material attribute and the dimensional thickness of reality, and the effect of welding need to determine much bevel angle Φ and finally definite.Alignment pin 6 fixedly welding material is two flat panel workpieces 7, the effect on alignment pin 6 and location-plate inclined-plane vertically downward, produce directed force F, according to the mechanical function decomposition principle, the active force that alignment pin 6 produces can be decomposed into the power Fcos Φ that welded blank is compressed downwards, with the horizontal applied force Fsin Φ that points to welded blank weld seam center, wherein thrust Fcos Φ is positioned at welded blank on the fixed base plate 1 downwards, guarantee the horizontal alignment up and down of welded blank, horizontal applied force Fsin Φ draws close flat panel workpieces to the weld seam center, guarantee to align about weld seam, make weld gap reduce to minimum, reach the frock requirement of laser weld, realize the accurate requirement of laser weld welding tooling.
Being known by Fig. 4, is protection vent hole slot cross-section figure.Protection vent hole groove 2 can be one, also can be a plurality of, and a plurality of protection vent hole grooves 2 that are used in combination are suitable for long weld seam, and weld seam is lacked in single being suitable for, with the different fusion length requirement of correspondence.Both satisfied the requirement of welding function, reduced mechanical processing difficulty, can also save the inert gas resource protection vent hole groove 2.
The utility model can both be suitable for for the metal and the nonmetallic materials of welding material to composition element sensitivities such as oxygen, hydrogen, nitrogen, water in the air.For the weld seam of different length, in short weld seam and long weld seam alternation, can flexible single use or a plurality of protection vent hole groove that is used in combination, can guarantee the long weld seam back of the body protect all standing, do not waste the inert gas resource of preciousness during the weak point weld seam.The utility model can be used for melting welding and deep penetration welding, the welding light source that uses comprises semiconductor laser, optical fiber laser, video disc laser instrument, all solid state laser, lamp pump solid state laser, carbon dioxide laser, and the welding of the recombination laser of above various laser and other thermal source.
Claims (5)
1. one kind has the fixture for laser welding of carrying on the back defencive function; comprise fixed base plate (1), left location-plate (5) and right location-plate (4); left and right sides location-plate (4,5) is placed on it and is fixing with alignment pin (6) and fixed base plate (1); it is characterized in that: the center of described fixed base plate (1) has a protection vent hole groove (2); flat panel workpieces to be welded (7) is docked on its groove and laser weld; ventilation mouth (3) is located in the protection vent hole groove (2); feed inert protective gas in the ventilation mouth (3), the butt welded seam back side is protected.
2. a kind of fixture for laser welding according to claim 1 with back of the body defencive function; it is characterized in that: a side of inclined-plane, described left and right sides location-plate (4,5) is respectively equipped with the inclined-plane; have locating hole in the inclined-plane, alignment pin (6) passes locating hole and flat panel workpieces with location-plate and fixed base plate positioning and fixing.
3. a kind of fixture for laser welding with back of the body defencive function according to claim 1 is characterized in that: the joint of described laser weld is butt joint welding or overlap joint welding, and weld seam is the through welding type, and fusion penetration and welded blank thickness ratio scope are 0.5～1.
4. a kind of fixture for laser welding with back of the body defencive function according to claim 1, it is characterized in that: the bevel angle Φ value scope of inclined-plane, described left and right sides location-plate (4,5) is 15 °～75 °.
5. a kind of fixture for laser welding with back of the body defencive function according to claim 1, it is characterized in that: described protection vent hole groove (2) can be one, also can be a plurality of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220106733 CN203076794U (en) | 2012-03-20 | 2012-03-20 | Laser welding clamp with back protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220106733 CN203076794U (en) | 2012-03-20 | 2012-03-20 | Laser welding clamp with back protection function |
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| Publication Number | Publication Date |
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| CN203076794U true CN203076794U (en) | 2013-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220106733 Expired - Lifetime CN203076794U (en) | 2012-03-20 | 2012-03-20 | Laser welding clamp with back protection function |
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| CN (1) | CN203076794U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102601531A (en) * | 2012-03-20 | 2012-07-25 | 江苏中科四象激光科技有限公司 | Laser welding fixture with back protection function |
| CN103521991A (en) * | 2013-09-26 | 2014-01-22 | 天津大学 | Horizontal position welding clamping device for workpiece to be welded |
| CN104842081A (en) * | 2015-05-18 | 2015-08-19 | 中国航空工业集团公司北京航空制造工程研究所 | Thick plate welding method and welding fixture |
| CN106862766A (en) * | 2017-04-21 | 2017-06-20 | 温州大学 | A kind of galvanized sheet laser welding apparatus and its technique |
| CN107931793A (en) * | 2017-11-01 | 2018-04-20 | 中国兵器科学研究院宁波分院 | A kind of titanium alloy welding back of the body protective device and welding method |
| CN110640317A (en) * | 2019-09-19 | 2020-01-03 | 中国科学院兰州化学物理研究所 | Laser welding method of nickel-titanium shape memory alloy |
| CN112222651A (en) * | 2020-09-30 | 2021-01-15 | 成都先进金属材料产业技术研究院有限公司 | Positionable laser tailor-welding fixture and welding method |
| CN112247320A (en) * | 2020-10-20 | 2021-01-22 | 上海东鼎钢结构有限公司 | Large-caliber duplex stainless steel butt-joint protection welding device |
| CN113210987A (en) * | 2021-06-15 | 2021-08-06 | 中国航发成都发动机有限公司 | Double-sided ventilation protection welding fixture for aviation elbow nozzle structural part |
| CN113547190A (en) * | 2021-08-10 | 2021-10-26 | 内蒙古第一机械集团股份有限公司 | Gas protection device and process method for welding TC4 titanium alloy plate |
-
2012
- 2012-03-20 CN CN 201220106733 patent/CN203076794U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102601531A (en) * | 2012-03-20 | 2012-07-25 | 江苏中科四象激光科技有限公司 | Laser welding fixture with back protection function |
| CN103521991A (en) * | 2013-09-26 | 2014-01-22 | 天津大学 | Horizontal position welding clamping device for workpiece to be welded |
| CN104842081A (en) * | 2015-05-18 | 2015-08-19 | 中国航空工业集团公司北京航空制造工程研究所 | Thick plate welding method and welding fixture |
| CN106862766A (en) * | 2017-04-21 | 2017-06-20 | 温州大学 | A kind of galvanized sheet laser welding apparatus and its technique |
| CN107931793A (en) * | 2017-11-01 | 2018-04-20 | 中国兵器科学研究院宁波分院 | A kind of titanium alloy welding back of the body protective device and welding method |
| CN107931793B (en) * | 2017-11-01 | 2021-09-14 | 中国兵器科学研究院宁波分院 | Titanium alloy welding back protection device and welding method |
| CN110640317A (en) * | 2019-09-19 | 2020-01-03 | 中国科学院兰州化学物理研究所 | Laser welding method of nickel-titanium shape memory alloy |
| CN112222651A (en) * | 2020-09-30 | 2021-01-15 | 成都先进金属材料产业技术研究院有限公司 | Positionable laser tailor-welding fixture and welding method |
| CN112247320A (en) * | 2020-10-20 | 2021-01-22 | 上海东鼎钢结构有限公司 | Large-caliber duplex stainless steel butt-joint protection welding device |
| CN113210987A (en) * | 2021-06-15 | 2021-08-06 | 中国航发成都发动机有限公司 | Double-sided ventilation protection welding fixture for aviation elbow nozzle structural part |
| CN113210987B (en) * | 2021-06-15 | 2023-03-14 | 中国航发成都发动机有限公司 | Double-side ventilation protection welding fixture for aviation elbow nozzle structural part |
| CN113547190A (en) * | 2021-08-10 | 2021-10-26 | 内蒙古第一机械集团股份有限公司 | Gas protection device and process method for welding TC4 titanium alloy plate |
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Legal Events
| Date | Code | Title | Description |
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| DD01 | Delivery of document by public notice |
Addressee: Chen Lin Document name: Notification to Make Rectification |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130724 |