CN116511717A - Multi-dimensional adjustable in-situ laser welding device - Google Patents
Multi-dimensional adjustable in-situ laser welding device Download PDFInfo
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- CN116511717A CN116511717A CN202310425813.4A CN202310425813A CN116511717A CN 116511717 A CN116511717 A CN 116511717A CN 202310425813 A CN202310425813 A CN 202310425813A CN 116511717 A CN116511717 A CN 116511717A
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- 238000003466 welding Methods 0.000 title claims abstract description 214
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 30
- 239000013307 optical fiber Substances 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 238000009434 installation Methods 0.000 abstract description 10
- 238000002360 preparation method Methods 0.000 abstract description 7
- 230000001681 protective effect Effects 0.000 abstract description 3
- 230000003287 optical effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910001069 Ti alloy Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
Classifications
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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
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
-
- 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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
-
- 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
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/0869—Devices involving movement of the laser head in at least one axial direction
- B23K26/0876—Devices involving movement of the laser head in at least one axial direction in at least two axial directions
- B23K26/0884—Devices involving movement of the laser head in at least one axial direction in at least two axial directions in at least in three axial directions, e.g. manipulators, robots
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a multi-dimensional adjustable in-situ laser welding device, which comprises a mechanical actuating mechanism, a connecting rod mechanism, a rotating module, a welding head module and a focus indication module which are sequentially connected from front to back, wherein the welding head module comprises a first welding head module cavity, a mounting seat body, a ratchet wheel turntable mechanism, and an optical fiber connector, a collimating lens, a light path adjusting lens, a focusing lens and a protective lens which are sequentially arranged in the first welding head module cavity along the laser light path emitting direction; the installation seat body is connected with the driving end of the rotating module, and the installation seat body is connected with the first welding head module cavity through the ratchet wheel turntable mechanism. The invention can realize multidimensional adjustment of welding positions, reduces the risk of mechanical interference, increases the coverage range of welding operation and ensures the welding quality. According to the invention, the posture of the welding head module can be rapidly confirmed through the focus indication module, so that the preparation time before welding is effectively shortened, and the processing efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of in-situ welding, and particularly relates to a multi-dimensional adjustable in-situ laser welding device.
Background
Unlike conventional welding parts manufacturing, in-situ welding technology utilizes high-energy beam such as laser to weld in the assembly stage of parts, so as to realize coordination and unification of the in-situ welding process and the assembly technology of the parts to be welded, and greatly shorten the manufacturing period of the parts. In situ, that is, the traditional position changing machine is not used, the posture of the welded parts is not changed, and all welding seams are welded only by means of the execution tail ends. The laser welding has the advantages of high energy density, concentrated heating, small thermal damage to materials, large depth-to-width ratio of welding seams, low residual stress of welding joints, high welding precision, capability of remarkably reducing the post-welding processing amount, easiness in integration, automation and flexibility of welding equipment, remarkable characteristics of high energy density, high welding precision and high welding efficiency, and welding quality comparable with that of electron beam welding without a vacuum environment.
In the field of aeronautical manufacture, the laser in-situ welding is performed during the assembly phase on the structural part of the titanium alloy frame beam of the aircraft. Particularly, for in-situ welding of complex aviation structural parts, the positioning fixture of the parts is complex in structure and staggered, the reachable difficulty of the welding head module is further increased, interference is very easy to occur only by clamping the conventional laser welding head module by a mechanical arm of a robot, and full coverage of welding seams cannot be realized. At present, in-situ welding of an aircraft frame beam joint belongs to the brand new manufacturing technical field, and the welding requirement cannot be completely met by the existing laser welding tail end.
Therefore, a flexible and adjustable welding tail end is needed, interference of a part body and a fixture is avoided, and accessibility of a welding head module under a welding working condition of a complex frame beam skeleton structure is guaranteed, so that the defects in the prior art are overcome.
Disclosure of Invention
The invention aims to provide a multi-dimensional adjustable in-situ laser welding device, which aims to solve the problems.
The invention is realized mainly by the following technical scheme:
the multi-dimensional adjustable in-situ laser welding device comprises a mechanical actuating mechanism, a connecting rod mechanism, a rotating module, a welding head module and a focus indication module which are sequentially connected from front to back, wherein the rotating module is used for driving the welding head module to rotate; the welding head module comprises a first welding head module cavity, a mounting seat body, a ratchet wheel turntable mechanism, an optical fiber connector and a lens mechanism, wherein the lens mechanism comprises a collimating lens, a light path adjusting lens, a focusing lens and a protective lens which are sequentially arranged along the laser light path emitting direction, and the focusing lens and the protective lens are coaxially arranged; the top of the first welding head module cavity is provided with an optical fiber connector, a lens mechanism is arranged in the optical fiber connector, and the tail end of the first welding head module cavity is provided with a focus indication module; the mounting seat body is connected with the first welding head module cavity through the ratchet wheel turntable mechanism, the ratchet wheel turntable mechanism is used for enabling the first welding head module cavity to rotate unidirectionally along the axial direction of the focusing lens, and the mounting seat body is connected with the driving end of the rotating module.
In order to better realize the invention, further, the side wall of the first welding head module cavity is provided with a water cooling layer, the outer side of the first welding head module cavity is correspondingly provided with a water cooling joint communicated with the water cooling layer, and the water cooling joint is connected with a water cooling circulation mechanism.
In order to better realize the invention, further, the interior of the first welding head module cavity is fixedly provided with the collimating lens, the light path adjusting lens, the focusing lens and the protecting lens through the mounting bracket respectively, the mounting bracket is internally provided with a water cooling flow passage, and the side wall of the first welding head module cavity is correspondingly provided with a water cooling joint communicated with the water cooling flow passage.
The side wall of the first welding head module cavity is correspondingly provided with a plurality of water-cooling joints for water inflow and water outflow so as to be connected with a water-cooling circulation mechanism, and finally, the temperature of the lens in the first welding head module cavity is adjusted. The water cooling circulation mechanism is in the prior art, so that the description is omitted.
In order to better realize the invention, further, the tail end of the first welding head module cavity is in threaded connection with the focus indication module, the focus indication module comprises a threaded connector and a round table ranging rod, the top of the round table ranging rod is in threaded connection with the tail end of the first welding head module cavity through the threaded connector, the round table ranging rod and the focusing lens are coaxially arranged, and the length of the round table ranging rod is equal to the focal length of the focusing lens.
In order to better realize the invention, the rotary module further comprises a body, a servo motor and a speed reducing mechanism, wherein the servo motor and the speed reducing mechanism are arranged on the body, the body is connected with the connecting rod mechanism, and the servo motor is connected with the mounting seat body through the speed reducing mechanism.
In order to better realize the invention, the connecting rod mechanism further comprises a first connecting arm, a plurality of middle connecting arms and a second connecting arm which are connected in sequence, wherein the free ends of the first connecting arm and the second connecting arm are respectively connected with the rotating module and the mechanical executing mechanism.
In order to better realize the invention, the connecting rod mechanism further comprises a connecting unit and a connecting flange, wherein the free end of the second connecting arm is connected with the mechanical actuating mechanism through the connecting flange; the first connecting arm is connected with the middle connecting arm, the adjacent middle connecting arm and the second connecting arm through connecting units respectively.
In order to better realize the invention, the connecting unit further comprises a locking nut and a connecting shaft, wherein the connecting ends of the first connecting arm, the middle connecting arm and the second connecting arm are respectively provided with through holes, and the connecting shaft penetrates through the adjacent through holes and is in threaded connection with the locking nut.
The beneficial effects of the invention are as follows:
(1) The invention can realize 360-degree rotation of the focus of the laser welding head module, greatly increases the accessibility of the tail end, ensures the light path to be vertical to the welding seam, ensures the welding quality, can realize the integral posture rotation and the adjustability of the laser welding head module, and can effectively avoid the interference of the welding head module, welding parts and fixtures. Meanwhile, by arranging the ratchet wheel turntable mechanism, the welding head module can be adjusted and fixed at any angle position in the axial direction of the ratchet wheel rotating shaft, interference is further avoided, accessibility is increased, and the welding head module has good practicability;
(2) Each connecting arm of the connecting rod mechanism can rotate at any angle and is fixed, and through the arrangement of the plurality of connecting arms, the connecting rod mechanism can be adjusted to any multi-section line shape according to requirements, interference with an in-situ welding object and a clamping tool thereof can be avoided to a great extent, and the connecting rod mechanism has extremely strong universality and can be adapted to parts and clamps in different shapes. Meanwhile, the connecting rod mechanism can increase the length of the connecting rod mechanism as required by adjusting the number of the connecting arm structural units, so that the coverage range of the welding tail end is increased, and the practicability is better;
(3) According to the invention, the gesture of the welding head module is quickly confirmed through the focus indication module, so that a reasonable welding position is adjusted, the preparation time before welding can be effectively reduced, and the processing efficiency is improved;
(4) According to the invention, the welding head module can rotate through the rotating module, and the first welding head module cavity can rotate unidirectionally along the axial direction of the focusing lens by a ratchet wheel turntable mechanism and is fixed; the flexible connection with the mechanical actuating mechanism is realized through the connecting rod mechanism, the multi-dimensional adjustment of the welding position can be realized, the operation flexibility is improved, the coverage range of welding operation is increased, the risk of mechanical interference is reduced, and the welding quality is ensured. According to the invention, the posture of the welding head module is confirmed through the focus indication module, so that a reasonable welding position can be quickly adjusted, the preparation time before welding can be effectively reduced, and the processing efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a welding apparatus according to the present invention;
FIG. 2 is a schematic view of a bond head module;
FIG. 3 is an enlarged view of FIG. 2 at A;
FIG. 4 is a schematic structural view of a linkage mechanism;
fig. 5 is a schematic structural view of the connection unit.
Wherein: 1. a welding head module; 2. a focus indication module; 3. a rotation module; 4. a link mechanism;
11. a first bond head module cavity; 12. a mounting base body; 13. a ratchet wheel turntable mechanism;
111. an optical fiber connector; 112. a collimating optic; 113. a water-cooled joint; 114. an optical path adjusting lens; 115. a focusing lens; 116. protecting the lens;
21. a threaded connector; 22. round table distance measuring ruler;
41. a first connecting arm; 42. a second connecting arm; 43. an intermediate connecting arm; 44. a connection unit; 441. a lock nut; 442. a connecting shaft; 45. and (5) connecting the flanges.
Detailed Description
Example 1:
the multi-dimensional adjustable in-situ laser welding device comprises a mechanical actuating mechanism, a connecting rod mechanism 4, a rotating module 3, a welding head module 1 and a focus indication module 2 which are sequentially connected from front to back, wherein the rotating module 3 is used for driving the welding head module 1 to rotate; the welding head module 1 comprises a first welding head module cavity 11, a mounting seat 12, a ratchet wheel turntable mechanism 13, an optical fiber connector 111 and a lens mechanism, wherein the lens mechanism comprises a collimating lens 112, a light path adjusting lens 114, a focusing lens 115 and a protecting lens 116 which are sequentially arranged along the laser light path emitting direction, and the focusing lens 115 and the protecting lens 116 are coaxially arranged; the top of the first welding head module cavity 11 is provided with an optical fiber connector 111, a lens mechanism is arranged in the optical fiber connector, and the tail end of the first welding head module cavity 11 is provided with a focus indication module 2; the mounting base 12 is connected with the first welding head module cavity 11 through a ratchet wheel turntable mechanism 13, the ratchet wheel turntable mechanism 13 is used for enabling the first welding head module cavity 11 to rotate unidirectionally along the axial direction of the focusing lens 115, and the mounting base 12 is connected with the driving end of the rotating module 3.
Preferably, as shown in fig. 2, the collimating lens 112, the optical path adjusting lens 114, the focusing lens 115 and the protecting lens 116 are fixedly installed in the first welding head module cavity 11 through installation brackets respectively, water cooling channels are arranged in the installation brackets, and water cooling joints 113 communicated with the water cooling channels are correspondingly arranged on the side walls of the first welding head module cavity 11. The water cooling joint 113 is connected with a water cooling circulation mechanism.
Preferably, as shown in fig. 4, the linkage mechanism 4 includes a first connecting arm 41, a plurality of intermediate connecting arms 43 and a second connecting arm 42 that are sequentially connected, and free ends of the first connecting arm 41 and the second connecting arm 42 are respectively connected with the rotating module 3 and the mechanical actuator.
Preferably, as shown in fig. 4, the linkage mechanism 4 further includes a connection unit 44 and a connection flange 45, and the free end of the second connection arm 42 is connected with the mechanical actuator through the connection flange 45; the first connecting arm 41 and the intermediate connecting arm 43, the adjacent intermediate connecting arm 43, and the intermediate connecting arm 43 and the second connecting arm 42 are connected by a connecting unit 44, respectively.
Preferably, as shown in fig. 5, the connection unit 44 includes a locking nut 441 and a connection shaft 442, the connection ends of the first connection arm 41, the intermediate connection arm 43, and the second connection arm 42 are respectively provided with through holes, and the connection shaft 442 passes through the adjacent through holes and is screw-coupled with the locking nut 441.
According to the invention, the welding head module 1 can rotate through the rotating module 3, and the first welding head module cavity 11 can rotate unidirectionally by any angle along the axial direction of the focusing lens and is fixed through the ratchet wheel turntable mechanism 13; the flexible connection with the mechanical actuating mechanism is realized through the connecting rod mechanism 4, the multi-dimensional adjustment of the welding position can be realized, the operation flexibility is improved, the coverage range of welding operation is increased, the risk of mechanical interference is reduced, and the welding quality is ensured. According to the invention, the posture of the welding head module 1 is confirmed through the focus indication module 2, so that a reasonable welding position can be quickly adjusted, the preparation time before welding can be effectively reduced, and the processing efficiency is improved.
Example 2:
an in-situ laser welding device with adjustable multi-dimension, as shown in fig. 1-3, comprises a mechanical actuator, a connecting rod mechanism 4, a rotating module 3, a welding head module 1 and a focus indication module 2 which are sequentially connected from front to back. The welding head module 1 comprises a first welding head module cavity 11, a mounting seat 12, a ratchet wheel turntable mechanism 13, an optical fiber connector 111 and a lens mechanism, wherein the lens mechanism comprises a collimating lens 112, a light path adjusting lens 114, a focusing lens 115 and a protecting lens 116 which are sequentially arranged along the laser light path emitting direction, and the focusing lens 115 and the protecting lens 116 are coaxially arranged; the top of the first welding head module cavity 11 is provided with an optical fiber connector 111, and a lens mechanism is installed inside the optical fiber connector.
As shown in fig. 2, the mounting base 12 is connected to the first welding head module cavity 11 through a ratchet turntable mechanism 13, and the ratchet turntable mechanism 13 is used to rotate the first welding head module cavity 11 in a unidirectional direction along the axial direction of the focusing lens 115. As shown in fig. 1, the rotating module 3 is configured to drive the welding head module 1 to rotate, and the rotating module 3 includes a body, a servo motor and a speed reducing mechanism, the servo motor and the speed reducing mechanism are disposed on the body, the body is connected with the link mechanism 4, and the servo motor is connected with the mounting seat body 12 through the speed reducing mechanism.
As shown in fig. 2, the end of the first welding head module cavity 11 is screwed with the focus indication module 2, the focus indication module 2 includes a screwed joint 21 and a round table ranging rod 22, the top of the round table ranging rod 22 is screwed with the end of the first welding head module cavity 11 through the screwed joint 21, the round table ranging rod 22 and the focusing lens 115 are coaxially arranged, and the length of the round table ranging rod 22 is equal to the focal length of the focusing lens 115.
Preferably, a water cooling layer is disposed on the side wall of the first welding head module cavity 11, a water cooling joint 113 communicated with the water cooling layer is correspondingly disposed on the outer side of the first welding head module cavity 11, and the water cooling joint 113 is connected with a water cooling circulation mechanism.
According to the invention, the welding head module 1 can rotate through the rotating module 3, and the first welding head module cavity 11 can rotate unidirectionally by any angle along the axial direction of the focusing lens and is fixed through the ratchet wheel turntable mechanism 13; the flexible connection with the mechanical actuating mechanism is realized through the connecting rod mechanism 4, the multi-dimensional adjustment of the welding position can be realized, the operation flexibility is improved, the coverage range of welding operation is increased, the risk of mechanical interference is reduced, and the welding quality is ensured. According to the invention, the posture of the welding head module 1 is confirmed through the focus indication module 2, so that a reasonable welding position can be quickly adjusted, the preparation time before welding can be effectively reduced, and the processing efficiency is improved.
Example 3:
the invention can effectively avoid interference between the welding end and the welding part as well as between the welding clamp and ensures accessibility of the welding end, as shown in figures 1-5, facing to complex in-situ welding parts and assembly states thereof. The invention comprises the following steps: the welding head module 1 for completing the optical collimation and focusing of the laser, the focus indication module 2 for completing the posture determination of the welding head module 1, the rotary module 3 for completing the position adjustment of the welding head module 1, and the link mechanism 4 which is connected with the tail end of the mechanical executing mechanism and has the flexible and adjustable function.
Preferably, as shown in fig. 2, the welding head module 1 includes a first welding head module cavity 11, a mounting base 12, and a ratchet turntable mechanism 13. The optical fiber connector 111, the collimating lens 112, the optical path adjusting lens 114, the focusing lens 115 and the protecting lens 116 are sequentially arranged on the first welding head module cavity 11 along the laser optical path emitting direction, the lenses are installed through the installation support, the water cooling flow channel is arranged in the installation support, the cooling of the lenses is completed through circulating cooling water, and the water cooling connector 113 is arranged outside the cavity. Threads are arranged at the tail end of the first welding head module cavity 11, the first welding head module cavity is mechanically connected with the focus indication module 2 through threaded connection, quick assembly and disassembly are realized, and the tail end position of the threads is parallel to the center of the focusing lens 115. The ratchet wheel turntable mechanism 13 is internally provided with a ratchet wheel mechanical mechanism, so that the first welding head module cavity 11 can rotate unidirectionally along the axial direction of the focusing lens for any angle and is fixed.
Preferably, as shown in fig. 2 and 3, the focus indication module 2 includes a threaded connector 21 and a round table ranging rod 22; the threaded connector 21 is provided with an internal thread and is connected with an external thread arranged on the welding head module 1, so that quick assembly and disassembly can be realized. The length of the round table distance measuring ruler 22 is the focal length of the focusing lens 115.
Preferably, the rotating module 3 comprises a servo motor and a speed reducing mechanism, and is used for driving the welding head module 1 to realize stepless controllable rotation along the axial direction; and the rotating module 3 is provided with an aviation plug for realizing electric connection with an external control system. The rotating module 3 is mechanically connected with the welding head module 1 and the link mechanism 4 respectively through bolts.
Preferably, as shown in fig. 4 and 5, the linkage 4 includes 1 first connecting arm 41,1 second connecting arms 42 and several intermediate connecting arms 43. The front end of the first connecting arm 41 is mechanically connected with the rotating module 3 through bolts, and a through hole is formed in the tail end of the first connecting arm 41. The tail end of the second connecting arm 42 is mechanically connected with the connecting flange 45 through bolts, and a through hole is formed in the front end of the second connecting arm 42. The two ends of the middle connecting arm 43 are respectively provided with a through hole, and the two adjacent connecting arms are connected through the connecting unit 44. The connection unit 44 includes a lock nut 441 and a connection shaft 442, threads are disposed on the lock nut 441 and the connection shaft 442, the connection shaft 442 passes through the through holes of two adjacent connection arms and is connected with the lock nut 441, and the adjacent connection arms are pressed by rotating the lock nut 441. The connecting flange 45 is used to complete the connection of the end of the second connecting arm 42 to the end of the mechanical actuator.
The in-situ laser welding terminal welding method for the complex metal structure is realized by adopting the device and comprises the following steps of:
s1: first, the mechanical connection of the welding head module 1, the focus indication module 2, the rotation module 3 and the link mechanism 4 is completed.
S2: and (3) finishing the clamping of the parts to be welded, selecting a welding line to be welded, and enabling the top end of the focus indication module 2 to be close to the center of the welding line.
S3: and the ratchet wheel turntable mechanism 13 is rotated, the welding head module 1 is adjusted to a proper position, and interference between the mounting seat body 12 of the welding head module 1 and the part to be welded and the matched clamping tool is avoided.
S4: the angle adjustment of the rotary module 3 is completed, the first connecting arm 41 of the connecting rod mechanism 4 is adjusted to a proper position, interference between the first connecting arm 41 and a part to be welded and the matched clamping tool is avoided, and the confirmation of the posture of the welding head module 1 is completed.
S5: and the installation of the connecting rod mechanism 4 is completed, all connecting arms are adjusted to proper positions, interference between the connecting rod mechanism 4 and parts to be welded and the matched clamping tool is avoided, and binding and fixing of the laser optical fiber and the connecting rod mechanism 4 are completed.
S6: the welding operation can be started by removing the focus indication module 2.
Compared with the existing laser welding head module 1, the invention can realize 360-degree rotation of the focus of the laser welding head module 1, greatly increase the accessibility of the tail end, ensure the light path to be vertical to the welding seam and ensure the welding quality; the integral posture rotation of the laser welding head module 1 is adjustable, and interference between the welding head module 1 and welding parts and fixtures can be effectively avoided. Meanwhile, the ratchet wheel turntable mechanism 13 is arranged, so that the welding head module 1 can be adjusted and fixed at any angle in the axial direction of the ratchet wheel rotating shaft, interference is further avoided, and accessibility is improved. Each connecting arm of the connecting rod mechanism 4 can rotate at any angle and is fixed, the connecting arms are arranged, the length of each connecting arm is reasonably set, the connecting rod mechanism 4 can be adjusted to any multi-section line shape according to requirements, interference with an in-situ welding object and a clamping tool thereof can be avoided to a great extent, and the connecting rod mechanism has extremely strong universality and can be adapted to parts and clamps of different shapes. Meanwhile, the connecting rod mechanism 4 can increase the length of the connecting rod mechanism 4 and the coverage range of the welding tail end according to the requirement by adjusting the number of the connecting arm structural units. The focus indication module 2 can quickly confirm the posture of the welding head module 1, adjust out a reasonable welding position, and compared with the existing mode of confirming the focal length through a sensor, the focus indication module can effectively reduce the preparation time before welding and improve the processing efficiency.
Example 4:
an in-situ laser welding device with adjustable multiple dimensions, as shown in fig. 1-5, comprises a linkage mechanism 4, a rotating module 3, a welding head module 1 and a focus indicating module 2. The welding head module 1 is mechanically connected with the focus indication module 2, and can be quickly disassembled and assembled through threaded connection. The welding head module 1 comprises a first welding head module cavity 11, a mounting seat body 12 and a ratchet wheel turntable mechanism 13. An optical fiber connector 111, a collimating lens 112, an optical path adjusting lens 114, a focusing lens 115 and a protecting lens 116 are sequentially arranged on the first welding head module cavity 11 along the laser light path emitting direction. The lenses are installed through the installation support, the water cooling flow channel is arranged in the installation support, cooling of the lenses is completed through circulating cooling water, and the water cooling joint 113 is arranged outside the cavity. Threads are arranged at the tail end of the first welding head module cavity 11, the first welding head module cavity is mechanically connected with the focus indication module 2 through threaded connection, quick assembly and disassembly are realized, and the tail end position of the threads is parallel to the center of the focusing lens 115. The ratchet wheel turntable mechanism 13 is internally provided with a ratchet wheel mechanical mechanism, so that the first welding head module cavity 11 can rotate unidirectionally along the axial direction of the focusing lens for any angle and is fixed.
As shown in fig. 2 and 3, the focus indication module 2 includes a threaded connector 21 and a circular table ranging rod 22; the threaded connector 21 is provided with internal threads and is in threaded connection with external threads arranged on the welding head module 1, so that quick assembly and disassembly can be realized. The length of the round table distance measuring ruler 22 is the focal length of the focusing lens 115.
The rotating module 3 comprises a servo motor and a speed reducing mechanism and is used for driving the welding head module 1 to realize stepless controllable rotation along the axial direction; and the rotating module 3 is provided with an aviation plug for realizing electric connection with an external control system. The rotating module 3 is mechanically connected with the welding head module 1 and the link mechanism 4 respectively through bolts.
As shown in fig. 4 and 5, the linkage 4 includes 1 first connecting arm 41,1 second connecting arms 42 and a plurality of intermediate connecting arms 43. The front end of the first connecting arm 41 is mechanically connected with the rotating module 3 through bolts, and a through hole is formed in the tail end of the first connecting arm 41. The tail end of the second connecting arm 42 is mechanically connected with the connecting flange 45 through bolts, and a through hole is formed in the front end of the second connecting arm 42. The two ends of the middle connecting arm 43 are respectively provided with a through hole, and the two adjacent connecting arms are connected through the connecting unit 44. The connection unit 44 includes a lock nut 441 and a connection shaft 442, the lock nut 441 and the connection end surface of the connection shaft 442 are both provided with threads, the connection shaft 442 passes through two adjacent connection arm through holes and is connected with the lock nut 441, and the compression of the adjacent connection arms is achieved by rotating the lock nut 441. The connecting flange 45 is used to complete the connection of the second connecting arm 42 to the end of the robot.
The fiber optic connector 111 of the present invention is a QBH interface wherein the focal length of the focusing mirror is selected to be 250mm. The water-cooled joint 113 provided outside the cavity has a size of Φ6mm. The length of the round table ranging rod 22 is 250mm. The rotating speed of the rotating module 3 is 1r/min; the first connecting arm 41 has a length of 300mm, the second connecting arm 42 has a length of 300mm, and 3 intermediate connecting arms 43 are provided and have a length of 200mm. The interface form of the connecting flange 45 is consistent with that of the connecting flange 45 of the library card robot KR 702100.
In the using process, the mechanical connection of the welding head module 1, the focus indication module 2, the rotating module 3 and the connecting rod mechanism 4 is finished firstly. Then, the clamping of the titanium alloy part to be welded is completed, a welding line to be welded is selected, and the top end of the focus indication module 2 is close to the center of the welding line. And the ratchet wheel turntable mechanism 13 is rotated, the welding head module 1 is adjusted to a proper position, and interference between the mounting seat body 12 of the welding head module 1 and the part to be welded and the matched clamping tool is avoided. The angle adjustment of the rotary module 3 is completed, the first connecting arm 41 of the connecting rod mechanism 4 is adjusted to a proper position, interference between the first connecting arm 41 and a part to be welded and the matched clamping tool is avoided, and the confirmation of the posture of the welding head module 1 is completed. And the installation of the connecting rod mechanism 4 is completed, all connecting arms are adjusted to proper positions, interference between the connecting rod mechanism 4 and parts to be welded and the matched clamping tool is avoided, and binding and fixing of the laser optical fiber and the connecting rod mechanism 4 are completed. Finally, the focus indication module 2 is removed, and the welding operation of the titanium alloy part can be started.
In summary, the invention can provide a multi-dimensional adjustable laser welding tail end for in-situ laser welding of complex metal structures, and can flexibly adjust the position of the welding tail end according to the welding requirements of different welding seams in the face of complex in-situ welding parts and assembly fixtures thereof, thereby effectively avoiding the interference between the welding tail end and the welding parts as well as between the welding tail end and the welding fixtures, having stronger adaptability and ensuring the accessibility of the welding tail end. The invention can quickly confirm the gesture of the welding head module 1 by using the focus indication module 2, adjust reasonable welding positions, effectively reduce the preparation time before welding and improve the processing efficiency.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present invention fall within the scope of the present invention.
Claims (8)
1. The multi-dimensional adjustable in-situ laser welding device is characterized by comprising a mechanical actuating mechanism, a connecting rod mechanism (4), a rotating module (3), a welding head module (1) and a focus indicating module (2) which are sequentially connected from front to back, wherein the rotating module (3) is used for driving the welding head module (1) to rotate; the welding head module (1) comprises a first welding head module cavity (11), a mounting seat body (12), a ratchet wheel turntable mechanism (13), an optical fiber connector (111) and a lens mechanism, wherein the lens mechanism comprises a collimating lens (112), a light path adjusting lens (114), a focusing lens (115) and a protecting lens (116) which are sequentially arranged along the laser light path emitting direction, and the focusing lens (115) and the protecting lens (116) are coaxially arranged; the top of the first welding head module cavity (11) is provided with an optical fiber connector (111), a lens mechanism is arranged in the optical fiber connector, and the tail end of the first welding head module cavity (11) is provided with a focus indication module (2); the mounting base body (12) is connected with the first welding head module cavity (11) through the ratchet wheel turntable mechanism (13), the ratchet wheel turntable mechanism (13) is used for enabling the first welding head module cavity (11) to axially rotate unidirectionally along the focusing lens (115), and the mounting base body (12) is connected with the driving end of the rotating module (3).
2. The multi-dimensional adjustable in-situ laser welding device according to claim 1, wherein a water cooling layer is arranged on the side wall of the first welding head module cavity (11), a water cooling joint (113) communicated with the water cooling layer is correspondingly arranged on the outer side of the first welding head module cavity (11), and the water cooling joint (113) is connected with a water cooling circulation mechanism.
3. The multi-dimensional adjustable in-situ laser welding device according to claim 1, wherein the collimating lens (112), the light path adjusting lens (114), the focusing lens (115) and the protecting lens (116) are fixedly installed in the first welding head module cavity (11) through mounting brackets respectively, a water cooling runner is arranged in each mounting bracket, and a water cooling joint (113) communicated with the water cooling runner is correspondingly arranged on the side wall of the first welding head module cavity (11).
4. A multi-dimensional adjustable in-situ laser welding device according to any of claims 1-3, characterized in that the end of the first welding head module cavity (11) is in threaded connection with the focus indication module (2), the focus indication module (2) comprises a threaded connector (21) and a circular table distance measuring ruler (22), the top of the circular table distance measuring ruler (22) is in threaded connection with the end of the first welding head module cavity (11) through the threaded connector (21), the circular table distance measuring ruler (22) is coaxially arranged with the focusing lens (115), and the length of the circular table distance measuring ruler (22) is equal to the focal length of the focusing lens (115).
5. A multi-dimensional adjustable in-situ laser welding device according to claim 1, characterized in that the rotary module (3) comprises a body, a servo motor and a speed reducing mechanism, wherein the servo motor and the speed reducing mechanism are arranged on the body, the body is connected with the connecting rod mechanism (4), and the servo motor is connected with the mounting seat body (12) through the speed reducing mechanism.
6. A multi-dimensional adjustable in-situ laser welding device according to claim 1, characterized in that the linkage mechanism (4) comprises a first connecting arm (41), a plurality of intermediate connecting arms (43) and a second connecting arm (42) which are connected in sequence, wherein the free ends of the first connecting arm (41) and the second connecting arm (42) are respectively connected with the rotating module (3) and the mechanical actuating mechanism.
7. A multi-dimensional adjustable in-situ laser welding device according to claim 6, wherein the linkage (4) further comprises a connection unit (44), a connection flange (45), the free end of the second connection arm (42) being connected to the mechanical actuator via the connection flange (45); the first connecting arm (41) is connected with the middle connecting arm (43), the adjacent middle connecting arm (43) and the middle connecting arm (43) is connected with the second connecting arm (42) through a connecting unit (44).
8. A multi-dimensional adjustable in-situ laser welding device according to claim 7, wherein the connection unit (44) comprises a lock nut (441) and a connection shaft (442), wherein the connection ends of the first connection arm (41), the intermediate connection arm (43) and the second connection arm (42) are respectively provided with through holes, and the connection shaft (442) passes through adjacent through holes and is in threaded connection with the lock nut (441).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310425813.4A CN116511717A (en) | 2023-04-20 | 2023-04-20 | Multi-dimensional adjustable in-situ laser welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310425813.4A CN116511717A (en) | 2023-04-20 | 2023-04-20 | Multi-dimensional adjustable in-situ laser welding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116511717A true CN116511717A (en) | 2023-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310425813.4A Pending CN116511717A (en) | 2023-04-20 | 2023-04-20 | Multi-dimensional adjustable in-situ laser welding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116511717A (en) |
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2023
- 2023-04-20 CN CN202310425813.4A patent/CN116511717A/en active Pending
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