Three-dimensional welding seam welding device

Abstract

The utility model provides a three-dimensional welding seam welding device which comprises a static frame, a movable frame, a first sleeve, a second sleeve and a stirring head assembly, and a first driving assembly is arranged in the static frame; the movable frame is connected with the static frame and can be driven to rotate around a first direction; a second driving assembly is arranged on the movable frame; the first sleeve is connected to the movable frame and can be driven by a second driving assembly to rotate in the second direction perpendicular to the first direction. The first sleeve is provided with a third driving assembly; the second sleeve is connected to the first sleeve in a sliding mode and can be driven by a third driving assembly to move in a reciprocating mode in the third direction perpendicular to the second direction; the stirring head assembly is connected to the second sleeve and comprises a fourth driving assembly and a stirring head which are connected, and the fourth driving assembly can drive the stirring head to rotate in the third direction. By means of the structure, the welding precision and the welding stability can be remarkably improved, and welding of three-dimensional welding seams can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of friction stir welding, and in particular relates to a three-dimensional weld seam welding device. Background Art

[0002] Since the invention of friction stir welding, the technology has received extensive attention and in-depth research, especially for aluminum alloy materials. Research institutions, schools and large companies around the world have conducted in-depth and detailed research and engineering application development. In recent years, friction stir welding has been successfully applied in rail transportation and shipbuilding industries. There are many special-shaped structure welding in rail transportation and shipbuilding industries, and there are many three-dimensional welds in special-shaped structures. Therefore, how to apply friction stir welding technology to the welding of three-dimensional welds is an urgent problem to be solved.

[0003] Therefore, the present utility model is specially proposed. Utility Model Content

[0004] The utility model aims to provide a three-dimensional weld welding device to solve the problem that friction stir welding in the prior art cannot realize three-dimensional weld welding.

[0005] The utility model provides a three-dimensional weld welding device, comprising:

[0006] A stationary frame, wherein a first driving assembly is disposed in the stationary frame;

[0007] A movable frame, the movable frame is connected to the static frame and can rotate around a first direction under a first drive; a second driving assembly is provided on the movable frame;

[0008] a first sleeve, the first sleeve being connected to the movable frame and being rotatable around a second direction perpendicular to the first direction under the drive of the second driving assembly; the first sleeve being provided with a third driving assembly;

[0009] a second sleeve, the second sleeve being slidably connected to the first sleeve and being reciprocatingly movable along a third direction perpendicular to the second direction under the drive of a third driving assembly;

[0010] A main shaft, the main shaft is connected to the second sleeve, and a fourth driving assembly is arranged on the main shaft, and the fourth driving assembly can drive the main shaft to rotate around a third direction;

[0011] A stirring head assembly is connected to the main shaft and can rotate around the third direction following the main shaft.

[0012] The three-dimensional weld seam welding device provided by the utility model can also have the following additional technical effects:

[0013] In a specific embodiment of the utility model, the movable frame is U-shaped, the first sleeve is provided with a rotating shaft arranged perpendicular to its axial direction, and the first sleeve is connected to the open end of the movable frame through the rotating shaft.

[0014] In a specific embodiment of the present invention, the number of the second driving components is two, and the two second driving components are respectively arranged on both sides of the moving frame and are respectively connected to the two rotating shafts of the first sleeve in a transmission manner.

[0015] In a specific implementation manner of the utility model, the rotating shaft is provided with a first gear, the second driving assembly is provided with a second gear, and the first gear and the second gear are meshed for transmission.

[0016] In a specific embodiment of the present invention, the second drive assembly further comprises a torque motor or a hydraulic motor or a combination of a motor and a reducer, wherein the second gear is connected to the torque motor or the hydraulic motor or the reducer.

[0017] In a specific embodiment of the present invention, the first driving component includes:

[0018] The gear bearing assembly comprises an inner ring with a central axis and an outer ring with a flange, wherein a gear ring is arranged on the central axis; the outer ring is connected to a stationary frame, and the other side of the central axis relative to the gear ring is connected to a moving frame;

[0019] The first power mechanism has two first power mechanisms and includes a motor and a reducer connected to each other, and the output shaft of each reducer is transmission-connected to the ring gear.

[0020] In a specific implementation manner of the utility model, the third driving assembly includes a motor, a reducer and a screw which are connected to each other, and the screw cooperates with the second sleeve to form a screw transmission mechanism.

[0021] In a specific implementation manner of the utility model, the first sleeve and the second sleeve are connected by a guide flat key or a guide spline.

[0022] In a specific implementation manner of the utility model, the stirring head assembly further comprises a knife handle, the knife handle is connected to the main shaft, and the stirring head is detachably connected to the knife handle.

[0023] In a specific implementation manner of the present utility model, the fourth drive assembly includes a motor, and the motor is connected to the spindle, or the fourth drive assembly and the spindle form an electric spindle.

[0024] In a specific implementation manner of the present utility model, the stirring head assembly further includes a pressure sensor, and the pressure sensor is connected to the third driving assembly and is used to obtain the welding pressure of the stirring head.

[0025] The three-dimensional weld welding device provided by the utility model adds another axis on the basis of the existing traditional five-axis machine head, which can significantly improve the welding accuracy and welding stability on the one hand, and realize the constant pressure welding of the three-dimensional weld by real-time detection of the welding pressure on the other hand, and realize one-time welding when the welding depth of the three-dimensional weld is different. In addition, the above structure can also realize the pressure detection of the three-dimensional weld during the welding process and realize constant pressure welding BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a front view of the three-dimensional weld welding device of the utility model;

[0028] Figure 2 for Figure 1 Left view of;

[0029] Figure 3 for Figure 1 Stereoscopic image of

[0030] Figure 4-5 It is a three-dimensional diagram of another state of the three-dimensional weld welding device of the utility model;

[0031] Figure 6 for Figure 1 Cross-sectional view of the center spindle.

[0032] Description of reference numerals:

[0033] 100-Three-dimensional weld welding device;

[0034] 1-static frame, 2-first power mechanism, 3-gear bearing group, 4-moving frame, 5-first sleeve, 6-first gear, 7-second gear, 8-torque motor, 9-spindle, 10-third driving assembly, 12-tool handle, 13-stirring head, 14-second sleeve. DETAILED DESCRIPTION

[0035] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0036] It should be understood that the terms used in the text are only for the purpose of describing specific example embodiments, and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used in the text may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0037] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0038] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0039] like Figure 1-6 As shown, a three-dimensional weld welding device 100 proposed by the utility model includes a static frame 1, a dynamic frame 4, a first sleeve 5, a second sleeve 14, a main shaft 9, a stirring head assembly, and correspondingly arranged first drive assembly, second drive assembly, third drive assembly 10 and fourth drive assembly.

[0040] Among them, a first driving assembly is provided in the stationary frame 1; the moving frame 4 is connected to the stationary frame 1 and can rotate around a first direction under the first drive; a second driving assembly is provided on the moving frame 4; the first sleeve 5 is connected to the moving frame 4 and can rotate around a second direction perpendicular to the first direction under the drive of the second driving assembly; the first sleeve 5 is provided with a third driving assembly 10; the second sleeve 14 is slidably connected to the first sleeve 5, and can reciprocate along a third direction perpendicular to the second direction under the drive of the third driving assembly 10; the main shaft 0 is connected to the second sleeve 14, and a fourth driving assembly is provided on the main shaft 9, and the fourth driving assembly can drive the main shaft 9 to rotate around the third direction; the stirring head assembly is connected to the main shaft 9, and can rotate around the third direction following the main shaft 9.

[0041] Specifically, the first direction is set as the C-axis direction, the second direction is set as the B-axis direction, and the third direction is set as the U-axis direction. The three-dimensional welding device provided in this embodiment not only has the ability to rotate in the three directions of the C-axis, the B-axis and the U-axis, but also has the ability to reciprocate on the U-axis. Furthermore, compared with the traditional five-axis machine head, the three-dimensional weld welding device 100 in this embodiment also has the ability to adjust the insertion depth of the stirring head 13, which can significantly improve the welding accuracy and welding stability on the one hand, and realize constant pressure welding of three-dimensional welds by real-time detection of welding pressure on the other hand, when the welding depth of the three-dimensional weld is different, one-time welding can be achieved.

[0042] In a specific embodiment of the present invention, the movable frame 4 is U-shaped, and the first sleeve 5 is provided with a rotating shaft which is perpendicular to its axial direction, and the first sleeve 5 is connected to the open end of the movable frame 4 through the rotating shaft.

[0043] Specifically, the stationary frame 1 is a cylindrical or prismatic structure with a mounting cavity, and a first driving assembly is arranged inside the stationary frame 1. The moving frame 4 is U-shaped, and its bottom surface is connected to the stationary frame 1, so that it can rotate under the drive of the first driving assembly. The first sleeve 5 is mounted on the open end of the moving frame 4 through a rotating shaft, so that it can swing under the drive of the second driving assembly.

[0044] That is, through the above structure, a swing fork type spindle head is formed to realize the coupled motion of the C-axis and the swing axis B-axis.

[0045] Of course, in other implementations, the movable frame 4 may also be other structures to form an offset spindle head.

[0046] In a specific embodiment of the present invention, the number of the second drive components is two, and the two second drive components are respectively arranged on both sides of the moving frame 4 and are respectively connected to the two rotating shafts of the first sleeve 5. By providing two second drive components and applying power to the first sleeve 5 from both sides, the driving stability can be ensured.

[0047] In a specific embodiment of the utility model, a first gear 6 is provided on the rotating shaft, and a second gear 7 is provided on the second driving assembly. The first gear 6 and the second gear 7 are meshed for transmission. The gear transmission is not easy to corrode and has high transmission efficiency. In addition, the meshed first gear 6 and the second gear 7 also have the function of eliminating the gap.

[0048] Of course, in other embodiments, worm gear transmission or torque motor 8 direct drive transmission can also be adopted.

[0049] In a specific embodiment of the present invention, the second drive assembly further comprises a torque motor 8 or a hydraulic motor or a motor and a reducer combination, wherein the second gear 7 is connected to the torque motor 8 or the hydraulic motor or the reducer. Through the structural arrangement of the above-mentioned various drive assemblies, it is convenient to select a suitable power device.

[0050] In a specific embodiment of the utility model, the first drive assembly includes a gear bearing group 3 and a first power mechanism 2, the gear bearing group 3 includes an inner ring with a central axis and an outer ring with a flange, and a gear ring is provided on the central axis; the outer ring is connected to the stationary frame 1 through a flange, and the other side of the central axis relative to the gear ring is also connected to the dynamic frame 4 through a flange; the first power mechanism 2 is two and includes a connected motor and a reducer, and the output shaft of each reducer is transmission-connected to the gear ring.

[0051] The above structure ensures the connection between the moving frame 4 and the stationary frame 1 by setting the gear bearing group 3, and ensures the driving force of the first driving component on the moving frame 4 through the dual power mechanism. At the same time, the dual power mechanism also has the function of eliminating the gap.

[0052] In a specific embodiment of the present invention, the third driving assembly 10 includes a motor, a reducer and a screw connected to each other, and the screw cooperates with the second sleeve 14 to form a screw transmission mechanism. By setting the screw transmission mechanism, the reciprocating transmission capability on the U axis can be realized.

[0053] In a specific embodiment of the utility model, the stirring head assembly further includes a handle 12, the handle 12 is connected to the main shaft 9, and the stirring head 13 is detachably connected to the handle 12. By making the stirring head 13 detachably connected to the handle 12, it is convenient to replace the stirring head 13 as needed, thereby improving the application range of the above-mentioned three-dimensional weld welding device.

[0054] In a specific implementation of the present invention, the fourth drive assembly includes a motor, and the motor is connected to the spindle 9 , or the fourth drive assembly and the spindle 9 form an electric spindle 9 .

[0055] In a specific embodiment of the present invention, the stirring head 13 assembly further includes a pressure sensor, which is connected to the third driving assembly and is used to obtain the welding pressure of the stirring head 13. By providing a pressure sensor, pressure detection of the welding process of the three-dimensional weld can be achieved and constant pressure welding can be achieved.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A three-dimensional weld welding device, characterized in that: include: A stationary frame, wherein a first driving assembly is disposed in the stationary frame; A movable frame, the movable frame is connected to the static frame and can rotate around a first direction under a first drive; a second driving assembly is provided on the movable frame; a first sleeve, the first sleeve being connected to the movable frame and being rotatable around a second direction perpendicular to the first direction under the drive of the second driving assembly; the first sleeve being provided with a third driving assembly; a second sleeve, the second sleeve being slidably connected to the first sleeve and being reciprocatingly movable along a third direction perpendicular to the second direction under the drive of a third driving assembly; A main shaft, the main shaft is connected to the second sleeve, and a fourth driving assembly is arranged on the main shaft, and the fourth driving assembly can drive the main shaft to rotate around a third direction; A stirring head assembly is connected to the main shaft and can rotate around the third direction following the main shaft.

2. The three-dimensional weld welding device according to claim 1, characterized in that: The movable frame is U-shaped, and the first sleeve is provided with a rotating shaft which is arranged perpendicular to the axial direction thereof, and the first sleeve is connected to the open end of the movable frame through the rotating shaft.

3. The three-dimensional weld welding device according to claim 2, characterized in that: The number of the second driving components is two, and the two second driving components are respectively arranged on both sides of the moving frame and are respectively connected to the two rotating shafts of the first sleeve in a transmission manner.

4. The three-dimensional weld welding device according to claim 3, characterized in that: The rotating shaft is provided with a first gear, the second driving assembly is provided with a second gear, and the first gear and the second gear are meshed for transmission.

5. The three-dimensional weld welding device according to claim 4, characterized in that: The second drive assembly further comprises a torque motor or a hydraulic motor or a combination of a motor and a reducer, wherein the second gear is connected to the torque motor or the hydraulic motor or the reducer.

6. The three-dimensional weld welding device according to claim 1, characterized in that: The first driving assembly comprises: The gear bearing assembly comprises an inner ring with a central axis and an outer ring with a flange, wherein the central axis is provided with a gear ring; the outer ring is connected to a stationary frame, and the other side of the central axis relative to the gear ring is connected to a moving frame; The first power mechanism has two first power mechanisms and includes a motor and a reducer connected to each other, and the output shaft of each reducer is transmission-connected to the ring gear.

7. The three-dimensional weld welding device according to claim 1, characterized in that: The third driving assembly includes a motor, a reducer and a lead screw which are connected to each other. The lead screw cooperates with the second sleeve to form a lead screw transmission mechanism.

8. The three-dimensional weld welding device according to claim 1, characterized in that: The first sleeve and the second sleeve are connected by a guide flat key or a guide spline.

9. The three-dimensional weld welding device according to claim 1, characterized in that: The stirring head assembly also includes a knife handle, which is connected to the main shaft, and the stirring head is detachably connected to the knife handle.

10. The three-dimensional weld welding device according to claim 1, characterized in that: The fourth driving assembly comprises a motor, and the motor is connected to the main shaft, or the fourth driving assembly and the main shaft form an electric main shaft.

11. The three-dimensional weld welding device according to claim 1, characterized in that: The stirring head assembly also includes a pressure sensor, which is connected to the third driving assembly and is used to obtain the welding pressure of the stirring head.

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