FSW manufacturing device for color-difference-free large-size thin-wall aluminum alloy part

Abstract

The utility model relates to the field of welding processing, in particular to a chromatic-aberration-free large-size thin-wall aluminum alloy part FSW manufacturing device which comprises a welding station, a shape correcting station and a polishing station which are sequentially arranged in the section bar processing direction. The welding station comprises a base used for fixing the profiles, a positioning block and a clamping block are arranged on the base in parallel, the clamping block and the positioning block can move in opposite directions to clamp the profiles to be welded, and the welding station further comprises pressing blocks which apply pressing actions from top to bottom to the two profiles respectively. After being pressed, the two profiles are welded through a static shaft shoulder friction stir welding device; the shape righting station comprises an upper shape righting wheel and a lower shape righting wheel, and a gap is formed between the wheel face of the upper shape righting wheel and the wheel face of the lower shape righting wheel so that welded profiles can pass through the gap. According to the utility model, the welded large-size section bar is uniform and consistent in appearance and has no color difference, and the production requirement is met.

Description

Technical Field

[0001] The utility model relates to the field of welding processing, in particular to a FSW manufacturing device for large-size thin-walled aluminum alloy parts without color difference. Background Art

[0002] Extruded aluminum profiles are widely used in rail transportation, shipbuilding, automobile and construction industries. The production process is described in patent number "CN116422722A". The aluminum billet placed in the mold cavity (or extrusion cylinder) is subjected to strong pressure to force the aluminum billet to undergo directional plastic deformation and be extruded from the die hole of the extrusion die, thereby obtaining parts or semi-finished products with the required cross-sectional shape and size and certain mechanical properties. Due to technical difficulties and cost factors, the width of extruded aluminum profiles in the current industry is generally within 500mm, so many products need to connect multiple pieces of aluminum profiles into a whole to meet the demand for a larger width. Large aluminum alloy thin-walled structures used as exterior decorative parts are generally subjected to surface treatments such as painting after welding, hoping to obtain a uniform surface and no color difference.

[0003] Currently, aluminum profiles are usually connected by welding. After welding, the weld can be visually identified on both sides of the aluminum profile. Due to the presence of gaps or additions in the weld, the weld area will undergo obvious size changes relative to the parent material. At the same time, welding will cause the workpiece to deform. The above effects will cause the weld to have color difference relative to other areas after painting, which cannot meet the requirement of uniform and consistent product appearance without color difference, so it is urgent to solve this problem. Utility Model Content

[0004] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides a FSW manufacturing device for large-sized thin-walled aluminum alloy parts without color difference. The utility model makes the appearance of large-sized profiles after welding uniform and without color difference, meeting production needs.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A FSW manufacturing device for large-size thin-walled aluminum alloy parts without color difference, comprising a welding station, a correction station and a grinding station arranged in sequence along a profile processing direction;

[0007] The welding station includes a base for fixing the profile, and a positioning block and a clamping block are arranged in parallel on the base. The clamping block and the positioning block can move toward each other to clamp the profile to be welded. The welding station also includes a pressing block for applying a top-down pressing action to the two profiles respectively. After the two profiles are pressed, they are welded by a static shoulder friction stir welder;

[0008] The orthopedic station includes an upper orthopedic wheel and a lower orthopedic wheel. There is a gap between the wheel surfaces of the upper orthopedic wheel and the lower orthopedic wheel for the profile to pass through after welding. The wheel surface of the upper orthopedic wheel is provided with a concave surface, and the wheel surface of the lower orthopedic wheel is provided with a convex surface. The weld of the profile passes between the concave surface and the convex surface to complete the rolling orthopedic process.

[0009] The grinding station includes a grinding table, a positioning plate is installed on the grinding table to fix the corrected profile; the profile is fixed to the positioning plate invertedly, and the driving source drives the grinding assembly to move along the back of the profile welding surface to grind the profile.

[0010] As a further solution of the utility model: the positioning block is fixedly connected to the base, a guide rail is installed on the base along the direction perpendicular to the weld, and the clamping block is fixed after slidingly fitting with the guide rail to adjust the spacing between the clamping block and the positioning block.

[0011] As a further solution of the utility model: two pressing blocks are symmetrically arranged on both sides of the weld along the length direction of the weld and are arranged adjacent to the weld.

[0012] As a further solution of the utility model: the pressing block includes an inclined pressing foot, and the distance between the inclined pressing foot and the stationary shoulder friction stir welding device does not exceed five millimeters.

[0013] As a further solution of the utility model: a support block arranged below the weld along the length direction of the weld is fixed on the base, the support block is made of high-frequency quenched carbon structural steel, and the hardness of the support block is ≥HRC55.

[0014] As a further solution of the utility model: the needle length of the stirring needle of the stationary shoulder friction stir welding device is 0.1mm to 0.2mm smaller than the wall thickness of the profile.

[0015] As a further solution of the utility model: the wheel width of the upper orthopedic wheel and the lower orthopedic wheel is 60-80 mm.

[0016] As a further solution of the utility model: the driving source includes X-axis guide rails symmetrically arranged on both sides of the positioning plate, the mounting seat is arranged in a direction perpendicular to the X-axis guide rails, and slides with the two X-axis guide rails; a Y-axis guide rail located between the two X-axis guide rails is installed on the mounting seat along the length direction, the grinding assembly slides with the Y-axis guide rail, and the grinding assembly is arranged with a grinding wheel that can produce lifting action in the vertical direction.

[0017] As a further solution of the utility model: a negative pressure hole is opened on the plate surface of the positioning plate, and the negative pressure hole is connected to the negative pressure source, so that the negative pressure adsorbs the profile from bottom to top.

[0018] As a further solution of the utility model: a positioning groove is provided on the plate surface of the positioning plate along the length direction of the weld for the ribbed profile to be clamped and positioned.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The utility model performs welding, correction and grinding operations on the profile in sequence, rolls and corrects the weld area after welding, and then performs force-controlled grinding on the back of the profile, so that the back of the weld of the large-size thin-walled aluminum profile is uniform, no shadow can be seen under natural light conditions, no color difference, and the touch feel is consistent.

[0021] 2. The utility model clamps and fixes two groups of profiles on the left and right by the cooperation of the clamping block and the positioning block, and presses the profiles from top to bottom by the pressing block, thereby improving the stability of the profile welding process, arranging the pressing block and the welding tool in close proximity, effectively controlling the overall deformation of the profile, and greatly reducing the deformation of the profile.

[0022] 3. The utility model rolls and corrects the profile by cooperating the convex and concave surfaces of the upper and lower correction wheels, thereby eliminating the deformation produced in the welding process and laying a foundation for subsequent grinding.

[0023] 4. The utility model can position the profile through negative pressure adsorption and the clamping of the positioning groove, so as to avoid shaking of the profile during the grinding process and improve the stability of the grinding process; during welding, the grinding assembly is driven through the profile surface through the cooperation of the guide rail, and the vertical grinding of the grinding wheel ensures the consistency of the grinding pressure during the grinding process, so that the grinding amount can be stably controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a welding station of the utility model.

[0025] Figure 2 It is a structural schematic diagram of the orthopedic workstation of the utility model.

[0026] Figure 3 It is a structural schematic diagram of the grinding station of the utility model.

[0027] Figure 4 It is a top view of the grinding station of the utility model.

[0028] In the figure:

[0029] 1. Base; 11. Profile; 12. Positioning block; 13. Clamping block;

[0030] 14. Support block; 15. Press block; 16. Stationary shoulder friction stir welding device;

[0031] 21, lower orthopedic wheel; 211, convex surface; 22, upper orthopedic wheel; 221, concave surface;

[0032] 3. Grinding table; 31. X-axis guide rail; 32. Mounting seat; 33. Y-axis guide rail;

[0033] 34. Grinding assembly; 341. Grinding wheel; 35. Positioning plate; 351. Positioning groove; 352. Negative pressure hole. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] See also Figures 1 to 4 In an embodiment of the utility model, a FSW manufacturing device for large-size thin-walled aluminum alloy parts without color difference includes a welding station, a correction station and a grinding station arranged in sequence along the processing direction of the profile.

[0036] The welding station includes a base 1, on which a positioning block 12 and a clamping block 13 are arranged along the welding direction, the positioning block 12 is connected and fixed to the base 1, and a guide rail is arranged on the base 1 along the direction perpendicular to the weld for the clamping block 13 to be fixed, and the clamping block 13 is fixed after slidingly matching with the guide rail, so as to adjust the distance between the clamping block 13 and the positioning block 12. After the profile 11 to be welded is laid on the base 1, it is clamped and fixed by the clamping block 13 and the positioning block 12.

[0037] After the two profiles 11 are clamped and fixed, they can be welded and fixed by a stationary shoulder friction stir welder 16. The needle length of the stirring needle of the stationary shoulder friction stir welder 16 is 0.1mm to 0.2mm smaller than the wall thickness of the profile. In order to enhance the fixing effect, a pressing block 15 located above the profile 11 is also provided on the base 1. The pressing block 15 is preferably a hydraulic flip-type workpiece pressing block. The pressing block 15 and the clamping block 13 can both press or clamp the profile 11 by hydraulic or pneumatic means.

[0038] Two groups of pressing blocks 15 are symmetrically arranged on both sides of the weld along the length direction of the weld, respectively pressing a group of profiles 11. The pressing blocks 15 include an inclined pressing foot, and the distance between the inclined pressing foot and the stationary shoulder friction stir welder 16 does not exceed five millimeters.

[0039] A detachable support block 14 is also installed on the base 1 along the direction of the weld, and preferably a groove is opened on the base 1 to clamp and fix the support block 14. The support block 14 is preferably made of 45# steel, with a surface high-frequency quenching treatment, and its hardness is ≥HRC55.

[0040] The orthopedic station includes an upper orthopedic wheel 21 and a lower orthopedic wheel 22. The wheel width of the upper orthopedic wheel 22 and the lower orthopedic wheel 21 is 60 to 80 mm, and there is a gap between the wheel surfaces for the profile 11 to pass through. The orthopedic station can be provided with a conveying device such as a conveyor belt at the front and rear ends of the orthopedic wheel to assist the profile 11 to pass through the orthopedic wheel smoothly and at a uniform speed, or the profile 11 can be driven to move forward only by the friction force of the wheel surface of the orthopedic wheel.

[0041] A concave surface 211 is circumferentially arranged in the middle of the wheel surface of the upper correction wheel 21, and a convex surface 221 is circumferentially arranged in the middle of the wheel surface of the lower correction wheel 22. The weld of the profile 11 passes between the convex surface 221 and the concave surface 211, and is thereby rolled and corrected by the convex surface 221 and the concave surface 211.

[0042] The grinding station includes a grinding table 3, on which a positioning plate 35 is installed, and the positioning plate 35 is used to position the corrected profile 11. The positioning plate 35 may be provided with a positioning groove 351 along the length direction of the weld, so that the profile 11 with the rib plate can be buckled upside down, so that the rib plate can be inserted into the positioning groove 351 to clamp and position the profile 11. After the profile 11 is positioned, the side where the weld is located faces the positioning plate 35, and the back of the profile 11 faces upward.

[0043] In order to improve the positioning effect of the profile 11, a mesh-shaped negative pressure hole 352 is also opened on the plate surface of the positioning plate 35. A negative pressure source such as a negative pressure fan can be installed at the bottom of the negative pressure hole 352 to adsorb and fix the profile 11 from bottom to top through negative pressure.

[0044] After the profile 11 is fixed, the driving source drives the grinding assembly 34 to move along the surface of the profile 11 , thereby grinding the back side of the profile 11 .

[0045] The driving source includes X-axis guide rails 31 symmetrically arranged on both sides of the positioning plate 35, and the mounting seat 32 is arranged in a direction perpendicular to the X-axis guide rails 31 and slidably cooperates with the two X-axis guide rails 31. A Y-axis guide rail 33 located between the two X-axis guide rails 31 is installed on the mounting seat 32 along the length direction, and a grinding assembly 34 is slidably cooperated with the Y-axis guide rail 33. A grinding wheel 341 that can generate a lifting action in the vertical direction is arranged on the grinding assembly 34.

[0046] The mounting seat 32 and the grinding assembly 34 can be driven by a linear power source such as a screw rod or an electric push rod to move along the guide rail. Multiple groups of mounting seats 32 can be installed to increase the number of grinding assemblies 34 to improve the grinding speed.

[0047] When manufacturing:

[0048] S1. After the profile 11 to be welded is pressed and positioned at the welding station, the profile 11 is welded and fixed by FSW welding;

[0049] S2, transferring the welded profile 11 to the orthopedic station, and performing rolling orthopedic treatment on the weld of the profile 11;

[0050] S3, transferring the shaped profile 11 to a polishing station, and polishing the back side of the profile 11.

[0051] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0052] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

Claims

1. A FSW manufacturing device for large-sized thin-walled aluminum alloy parts without color difference, characterized in that: It includes welding stations, orthopedic stations and grinding stations arranged in sequence along the processing direction of the profiles; The welding station comprises a base (1) for fixing a profile (11), a positioning block (12) and a clamping block (13) are arranged in parallel on the base (1), the clamping block (13) and the positioning block (12) can move towards each other to clamp the profile (11) to be welded, and the welding station also comprises a pressing block (15) for applying a top-down pressing action to the two profiles (11), and the two profiles (11) are welded by a stationary shoulder friction stir welder (16) after being pressed. The orthopedic station comprises an upper orthopedic wheel (22) and a lower orthopedic wheel (21); there is a gap between the wheel surfaces of the upper orthopedic wheel (22) and the lower orthopedic wheel (21) for the profile (11) to pass through after welding; a concave surface (221) is arranged on the wheel surface of the upper orthopedic wheel (22); a convex surface (211) is arranged on the wheel surface of the lower orthopedic wheel (21); the weld of the profile (11) passes between the concave surface (221) and the convex surface (211) to complete rolling orthopedic treatment; The grinding station comprises a grinding table (3), a positioning plate (35) is installed on the grinding table (3) to fix the corrected profile (11); the profile (11) is fixed to the positioning plate (35) in an inverted manner, and a driving source drives the grinding assembly (34) to move along the back side of the welding surface of the profile (11) to grind the profile (11).

2. The FSW manufacturing device for large-size thin-walled aluminum alloy parts without color difference according to claim 1 is characterized in that: The positioning block (12) is fixedly connected to the base (1), a guide rail is installed on the base (1) along the direction perpendicular to the weld, and the clamping block (13) is fixed after slidingly matching with the guide rail to adjust the spacing between the clamping block (13) and the positioning block (12).

3. The FSW manufacturing device for large-size thin-walled aluminum alloy parts without color difference according to claim 1 is characterized in that: The two pressing blocks (15) are symmetrically arranged on both sides of the weld along the length direction of the weld and are arranged adjacent to the weld.

4. The FSW manufacturing device for large-size thin-walled aluminum alloy parts without color difference according to claim 3 is characterized in that: The pressing block (15) includes a sloped pressing foot, and the spacing between the sloped pressing foot and the stationary shoulder friction stir welder (16) does not exceed five millimeters.

5. The FSW manufacturing device for large-size thin-walled aluminum alloy parts without color difference according to any one of claims 1 to 4, characterized in that: A support block (14) is also fixed on the base (1) and is arranged along the length direction of the weld and located below the weld. The support block (14) is made of high-frequency quenched carbon structural steel, and the hardness of the support block (14) is ≥HRC55.

6. The FSW manufacturing device for large-size thin-walled aluminum alloy parts without color difference according to any one of claims 1 to 4, characterized in that: The needle length of the stirring needle of the stationary shoulder friction stirring welding device (16) is 0.1mm to 0.2mm smaller than the wall thickness of the profile.

7. The FSW manufacturing device for large-size thin-walled aluminum alloy parts without color difference according to any one of claims 1 to 4, characterized in that: The wheel widths of the upper orthopedic wheel (22) and the lower orthopedic wheel (21) are 60 to 80 mm.

8. The FSW manufacturing device for large-size thin-walled aluminum alloy parts without color difference according to any one of claims 1 to 4, characterized in that: The driving source comprises X-axis guide rails (31) symmetrically arranged on both sides of the positioning plate (35); the mounting seat (32) is arranged in a direction perpendicular to the X-axis guide rails (31) and is slidably matched with the two X-axis guide rails (31); a Y-axis guide rail (33) located between the two X-axis guide rails (31) is installed on the mounting seat (32) along the length direction; a grinding assembly (34) is slidably matched with the Y-axis guide rail (33); and a grinding wheel (341) capable of generating a lifting action in a vertical direction is arranged on the grinding assembly (34).

9. The FSW manufacturing device for large-size thin-walled aluminum alloy parts without color difference according to any one of claims 1 to 4, characterized in that: A negative pressure hole (352) is provided on the plate surface of the positioning plate (35), and the negative pressure hole (352) is connected to a negative pressure source, thereby negatively absorbing the profile (11) from bottom to top.

10. The FSW manufacturing device for large-size thin-walled aluminum alloy parts without color difference according to any one of claims 1 to 4, characterized in that: A positioning groove (351) is provided on the plate surface of the positioning plate (35) along the length direction of the weld for the ribbed profile (11) to be clamped and positioned.

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