Method for simultaneously realizing welding and forming of columns on a plate

Abstract

This invention discloses a method for simultaneously welding and forming columns on a plate. Using a friction stir backfill spot welding tool, the original column is simultaneously welded to the plate and formed into columns of varying shapes and heights. This method achieves high-strength and efficient connection and forming of columns and plates. Furthermore, new columns of varying shapes and axial dimensions can be produced from a single original column, eliminating the need for additional machining and thus reducing production costs.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and in particular to a method for simultaneously achieving welding and forming of columns on a plate. Background Art

[0002] Yachts, tanks, and other vehicles utilize extensive aluminum panels, which often need to be connected or mounted to other structural components. This requires connecting aluminum columns and other structures to the panels as a medium between the panels and the structural components. Aluminum columns can be solid or hollow.

[0003] To achieve the connection between aluminum columns and aluminum plates, fusion welding methods such as inert gas welding (TIG) and metal arc welding (MIG) are often used to weld a full circle of fillet welds between the column and the plate. Alternatively, friction welding is used to generate heat through friction between the aluminum column and the aluminum plate and squeeze out liquid metal to achieve a high-strength connection. However, this method requires subsequent processing to remove the extruded aluminum flash. Whether the aluminum columns obtained by the above two connection methods are solid or hollow depends on the shape and structure of the original aluminum column itself, and there is no additional effect of changing the appearance.

[0004] Friction stir welding is a solid-phase welding method suitable for lightweight metal high-strength connections. The friction stir backfill spot welding technology derived from it uses the synchronous rotation and independent up and down movement of the stirring needle and stirring sleeve to achieve a point-like keyhole-free connection between plates. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a method for simultaneously welding and forming columns on a plate, thereby achieving high-strength and efficient column-plate connection and forming. Furthermore, new columns of different shapes and axial dimensions can be obtained from a single original column without the need for additional machining, thereby reducing production costs.

[0006] According to the method for simultaneously welding and forming columns on a plate according to an embodiment of the present invention, a friction stir backfill spot welding tool is used to simultaneously weld the original columns on the plate and form columns of different shapes and heights.

[0007] Wherein, the original column and the plate are both made of metal, such as aluminum and aluminum alloy, magnesium or magnesium alloy, copper or copper alloy, etc. The friction stir backfill spot welding tool comprises the stirring pin, the stirring sleeve and the pressing sleeve coaxially arranged from inside to outside.

[0008] The method for simultaneously realizing welding and forming of columns on plates in an embodiment of the present invention adopts the working principle of stir friction backfill spot welding: the compression sleeve does not rotate, and the plate body is compressed by the compression sleeve, and the original column is confined in the compression sleeve; then the stirring needle and the stirring sleeve are rotated to press on the original column and move axially in the reverse direction, so that the stirring needle or the stirring sleeve enters the plate body, breaking the interface between the original column and the plate body, realizing column-plate welding, and then the stirring needle and the stirring sleeve are moved axially in the reverse direction until the stirring needle and the stirring sleeve stay at their respective predetermined final stop positions, wherein the respective predetermined final stop positions of the stirring needle and the stirring sleeve are determined by the different shapes and axial dimensions of the column, so that the columns of different shapes and heights can be correspondingly formed according to the different needs of the column, such as solid columns and columns with holes.

[0009] In an embodiment of the present invention, a method for simultaneously welding and forming columns on a plate employs a friction stir backfill spot welding tool to simultaneously weld the original column to the plate and form the columns into columns of varying shapes and heights. The principle of friction stir backfill spot welding is utilized to achieve both column-plate connection and column formation, enabling the production of columns of varying shapes and axial dimensions, such as solid columns or columns with holes, as needed. This method not only achieves high-strength and efficient column-plate connection and forming, but also allows the production of new columns of varying shapes and axial dimensions from a single original column, eliminating the need for additional machining and thus reducing production costs.

[0010] In some embodiments, the friction stir backfill spot welding tool includes a stirring needle, a stirring sleeve and a pressing sleeve coaxially arranged from the inside to the outside;

[0011] The method comprises the following steps:

[0012] S1: placing the original column on the plate;

[0013] S2: The non-rotating pressing sleeve is arranged on the outer periphery of the original column and axially pressed on the plate body, so that the rotating stirring needle and the rotating stirring sleeve are axially pressed on the end surface of the original column;

[0014] S3: moving the rotating stirring needle and the rotating stirring sleeve in opposite directions along the axial direction to break the interface between the original column and the plate body, thereby completing column-plate welding;

[0015] S4: After the column plate is welded, the rotating stirring needle and the rotating stirring sleeve are moved in opposite directions along the axial direction to form the required column;

[0016] S5: Separate the friction stir backfill spot welding tool from the plate and the column.

[0017] In some embodiments, the outer diameter of the original column is larger than the outer diameter of the stirring needle and smaller than the inner diameter of the compression sleeve.

[0018] In some embodiments, in steps S2 to S4, the stirring needle and the stirring sleeve rotate at the same speed or at a different speed, and the stirring needle and the stirring sleeve rotate in the same direction or in opposite directions.

[0019] In some embodiments, in step S3 and / or step S4, the axial moving speed of the stirring needle and the axial moving speed of the stirring sleeve satisfy the following relationship:

[0020] V 搅拌针 :V 搅拌套 =S 搅拌套 :S 搅拌针 ;

[0021] Among them, V 搅拌针 and V 搅拌套 are the axial moving speeds of the stirring needle and the axial moving speed of the stirring sleeve, respectively. 搅拌套 and S 搅拌针 They are respectively the area of ​​the annular ring of the stirring end surface of the stirring sleeve and the circular area of ​​the stirring end surface of the stirring needle.

[0022] In some embodiments, step S3 includes a first welding motion mode and / or a second welding motion mode;

[0023] The first welding motion mode is as follows: first, the stirring needle advances in the axial direction, while the stirring sleeve retreats in the axial direction until the stirring needle enters the plate body, breaking the interface between the original column and the plate body; then, the stirring needle retreats in the axial direction, while the stirring sleeve advances in the axial direction until the stirring sleeve enters the plate body, breaking the interface between the original column and the plate body, thereby completing the column-plate welding;

[0024] The second welding motion mode is: first, the stirring needle retracts axially, and at the same time the stirring sleeve advances axially until the stirring sleeve enters the plate body, breaking the interface between the original column and the plate body; then, the stirring needle advances axially, and at the same time the stirring sleeve retracts axially until the stirring needle enters the plate body, breaking the interface between the original column and the plate body, thereby completing the column-plate welding.

[0025] In some embodiments, step S4 includes a first forming motion mode and / or a second forming motion mode;

[0026] Wherein, the first forming motion mode is: first, the stirring needle advances in the axial direction, and the stirring sleeve retreats in the axial direction; then, the stirring needle retreats in the axial direction, and the stirring sleeve advances in the axial direction, until the stirring end surface of the stirring needle and the stirring end surface of the stirring sleeve stop at their respective predetermined final stop positions, thereby forming the desired column; or, the first forming motion mode is: the stirring needle advances in the axial direction, and the stirring sleeve retreats in the axial direction, until the stirring end surface of the stirring needle and the stirring end surface of the stirring sleeve stop at their respective predetermined final stop positions, thereby forming the desired column;

[0027] The second forming motion mode is: first, the stirring sleeve advances axially, and the stirring needle retreats axially; then, the stirring sleeve retreats axially, and the stirring needle advances axially, until the stirring end surface of the stirring needle and the stirring end surface of the stirring sleeve stay at their respective predetermined final stop positions, thereby forming the required column; or the second forming motion mode is: the stirring sleeve advances axially, and the stirring needle retreats axially, until the stirring end surface of the stirring needle and the stirring end surface of the stirring sleeve stay at their respective predetermined final stop positions, thereby forming the required column.

[0028] In some embodiments, in step S4 , the predetermined final stop position of the stirring end surface of the stirring needle and the predetermined final stop position of the stirring end surface of the stirring sleeve are determined by the shape and axial size of the cylinder.

[0029] In some embodiments, the predetermined final stop position of the stirring end surface of the stirring needle and the predetermined final stop position of the stirring end surface of the stirring sleeve may be flush or not flush.

[0030] In some embodiments, the predetermined final stop position of the stirring end surface of the stirring needle and the predetermined final stop position of the stirring end surface of the stirring sleeve can be flush, and when the predetermined final stop position of the stirring end surface of the stirring needle is located behind the predetermined final stop position of the stirring end surface of the stirring sleeve, the column is a solid column; when the predetermined final stop position of the stirring end surface of the stirring needle is located in front of the predetermined final stop position of the stirring end surface of the stirring sleeve, the column is a column with holes.

[0031] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0033] Figure 1a A side view schematic diagram of the pre-welding preparation in the method for simultaneously achieving welding and forming of a column on a plate according to the present invention;

[0034] Figure 1b A three-dimensional schematic diagram of the pre-welding preparation in the method for simultaneously achieving welding and forming of columns on a plate according to the present invention;

[0035] Figure 2 Schematic diagram of the welding tool applying constant pressure to the original column and the plate in the method for simultaneously achieving welding and forming of a column on a plate according to the present invention;

[0036] Figure 3a A schematic diagram of a welding step in a welding motion mode in the method for simultaneously achieving welding and forming of a column on a plate according to the present invention;

[0037] Figure 3b A schematic diagram of another welding step in a welding motion mode in the method for simultaneously achieving welding and forming of a column on a plate according to the present invention;

[0038] Figure 3c A schematic diagram of a welding step in another welding motion mode in the method for simultaneously achieving welding and forming of a column on a plate according to the present invention;

[0039] Figure 3d A schematic diagram of another welding step in another welding motion mode in the method for simultaneously achieving welding and forming of a column on a plate according to the present invention;

[0040] Figure 4a A schematic diagram of a forming step in the method for simultaneously achieving welding and forming of columns on a plate according to the present invention;

[0041] Figure 4b A schematic diagram of a forming step in the method for simultaneously achieving welding and forming of columns on a plate according to the present invention;

[0042] Figure 5a A schematic diagram of withdrawing a welding tool in the method for simultaneously achieving welding and forming of a column on a plate according to the present invention;

[0043] Figure 5b Another schematic diagram of the withdrawal of the welding tool in the method for simultaneously achieving welding and forming of a column on a plate according to the present invention;

[0044] Figure 6a A schematic diagram of a welded product obtained by the method of the present invention for simultaneously welding and forming columns on a plate;

[0045] Figure 6b This is a schematic diagram of another welded and formed product obtained by using the method of the present invention to simultaneously achieve welding and forming of columns on a plate.

[0046] Reference numerals:

[0047] Original column 10; plate body 20; column body 30; stirring needle 40; stirring sleeve 50; pressing sleeve 60. DETAILED DESCRIPTION

[0048] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0049] The following combination Figures 1a to 6b The method for simultaneously welding and forming columns on a plate according to an embodiment of the present invention will be described.

[0050] According to the method for simultaneously achieving column welding and forming on a plate according to an embodiment of the present invention, Figures 1a to 6b As shown, a stir friction backfill spot welding tool is used to simultaneously weld the original column 10 on the plate 20 and form columns 30 of different shapes and heights.

[0051] The original column 10 and the plate 20 are both made of metal, such as aluminum and aluminum alloy, magnesium or magnesium alloy, copper or copper alloy, etc. The friction stir backfill spot welding tool comprises a stirring pin 40, a stirring sleeve 50 and a pressing sleeve 60 coaxially arranged from the inside to the outside.

[0052] The method for simultaneously achieving plate column welding and forming in the embodiment of the present invention adopts the working principle of the stir friction backfill spot welding tool: the pressing sleeve 60 does not rotate, and the plate body 20 is pressed by the pressing sleeve 60, and the original column 10 is confined in the pressing sleeve 60; then the stirring needle 40 and the stirring sleeve 50 are rotated to press on the original column 10 and move axially in the opposite direction, so that the stirring needle 40 or the stirring sleeve 50 enters the plate body 20, breaking the interface between the original column 10 and the plate body 20, and realizing column-plate welding, and then the stirring needle 40 and the stirring sleeve 50 are moved axially in the opposite direction until the stirring needle 40 and the stirring sleeve 50 stay at their respective predetermined final stop positions, wherein the respective predetermined final stop positions of the stirring needle 40 and the stirring sleeve 50 are determined by the different shapes and axial dimensions of the column 30, so that columns 30 of different shapes and heights can be formed correspondingly according to the different needs of the column 30, such as a solid column (such as Figure 5a and Figure 6a ) and columns with holes (such as Figure 5b and Figure 6b ).

[0053] The method for simultaneously welding and forming columns on a plate according to an embodiment of the present invention employs a friction stir backfill spot welding tool to simultaneously weld a primary column 10 to a plate 20 and form the columns 30 into columns of varying shapes and heights. The principle of friction stir backfill spot welding is utilized to achieve both column-plate connection and column 30 formation, enabling the production of columns 30 of varying shapes and axial dimensions, such as solid columns or perforated columns, as desired. This method not only achieves high-strength and efficient column-plate connection and forming, but also allows the production of columns 30 of varying shapes and axial dimensions from a single primary column 10 without requiring additional machining, thereby reducing production costs.

[0054] The following combination Figures 1a to 6b The method for simultaneously welding and forming columns on a plate according to an embodiment of the present invention will be specifically described.

[0055] In an embodiment of the present invention, the friction stir backfill spot welding tool includes a stirring needle 40, a stirring sleeve 50 and a pressing sleeve 60 coaxially arranged from the inside to the outside. The stirring needle 40, the stirring sleeve 50 and the pressing sleeve 60 can all be approximately cylindrical in appearance.

[0056] The method for simultaneously achieving welding and forming of columns on a plate according to an embodiment of the present invention comprises the following steps:

[0057] S1: If Figure 1a and Figure 1b As shown, the original column 10 is placed on the plate 20. Both the original column 10 and the plate 20 are made of metal, such as, but not limited to, aluminum and aluminum alloys, magnesium and magnesium alloys, or copper and copper alloys. The outer diameter of the original column 10 is required to be no larger than the inner diameter of the compression sleeve 60.

[0058] S2: If Figure 2 As shown, the non-rotating compression sleeve 60 is sleeved on the outer periphery of the original column 10 and axially pressed on the plate body 20, so that the rotating stirring needle 40 and the rotating stirring sleeve 50 are axially pressed on the end face of the original column 10. In this step S2, the compression sleeve 60 presses the plate body 20 to prevent the plate body 20 from moving. The compression sleeve 60 is sleeved on the outer periphery of the original column 10 so that the stirring needle 40 and the stirring sleeve 50 move forward axially synchronously so that the stirring end face of the stirring needle 40 (such as Figure 2 The lower end surface of the stirring needle 40) and the stirring end surface of the stirring sleeve 50 (such as Figure 2 The lower end annular surface of the middle stirring sleeve 50 is pressed against the end surface of the original column 10.

[0059] S3: If Figure 3a and Figure 3b 、 Figure 3c and Figure 3dAs shown, the rotating stirring needle 40 and the rotating stirring sleeve 50 are moved in opposite directions along the axial direction to break the interface between the original column 10 and the plate body 20, and the column-plate welding is completed. In this step S3, the clamping sleeve 60 remains stationary and is still pressed against the plate body 20; the stirring needle 40 and the stirring sleeve 50 are rotated to press against the original column 10 and move in the opposite axial direction, so that the stirring needle 40 or the stirring sleeve 50 enters the plate body 20, breaking the interface between the original column 10 and the plate body 20. Reliable column-plate welding can be achieved by moving the stirring needle 40 and the stirring sleeve 50 back and forth once each. For example, Figure 3a , first, the stirring needle 40 advances axially into the plate body 20 and the stirring sleeve 50 retreats axially, breaking the interface between the original column 10 and the plate body 20 for the first time, thus achieving the first connection between the column and the plate; Figure 3b As shown, the stirring sleeve 50 then moves forward axially into the plate body 20 and the stirring needle 40 retreats axially, breaking the outer annular interface between the original column 10 and the plate body 20 for the second time, thereby achieving a reconnection between the column and the plate; thus, through two column-plate connections, a high-strength and high-efficiency complete connection between the column and the plate is achieved. For another example, Figure 3c As shown, the stirring sleeve 50 first advances axially into the plate body 20 and the stirring needle 40 retreats axially, breaking the outer annular interface between the original column 10 and the plate body 20 for the first time, thus achieving the first connection between the column and the plate; Figure 3d As shown, the stirring needle 40 advances axially into the plate body 20 and the stirring sleeve 50 retreats axially, breaking the interface in the middle position between the original column 10 and the plate body 20 for the second time, thereby realizing the reconnection between the column and the plate; thus, through two column-plate connections, a high-strength and efficient complete connection of the column and the plate is achieved.

[0060] S4: After the column plate welding is completed, the rotating stirring needle 40 and the rotating stirring sleeve 50 are moved in opposite directions along the axial direction to form the required column 30, such as Figure 4a and Figure 4b As shown. In step S4, the pressing sleeve 60 remains stationary and is still pressed against the plate 20; the stirring needle 40 and the stirring sleeve 50 are moved in the opposite axial direction until the stirring end surface of the stirring needle 40 and the stirring end surface of the stirring sleeve 50 stop at their respective predetermined final stop positions, wherein the predetermined final stop positions of the stirring needle 40 and the stirring sleeve 50 are determined by the different shapes and axial dimensions of the column 30, so that columns 30 of different shapes and heights can be formed according to different needs of the column 30. For example, a solid column (such as Figure 4a As shown) and the hole cylinder (as Figure 4b For example, when the predetermined final stop position of the stirring end surface of the stirring needle 40 is aligned with the predetermined final stop position of the stirring end surface of the stirring sleeve 50, and as shown in FIG. Figure 4aAs shown, when the predetermined final stop position of the stirring end surface of the stirring needle 40 is located behind the predetermined final stop position of the stirring end surface of the stirring sleeve 50, the formed column 30 is a solid column; Figure 4b As shown, when the predetermined final stop position of the stirring end surface of the stirring needle 40 is located in front of the predetermined final stop position of the stirring end surface of the stirring sleeve 50, the column 30 is a column with holes.

[0061] S5: If Figure 5a and Figure 5b As shown, the stir friction backfill spot welding tool is separated from the plate 20 and the column 30, the welding and forming of the column 30 on the plate is completed, and a welded forming product of the column on the plate is obtained, as shown in FIG. Figure 6a and Figure 6b shown.

[0062] The method for simultaneously welding and forming columns on a plate in the above-described embodiment employs a friction stir backfill spot welding tool to simultaneously weld the original column 10 to the plate 20 and form the columns 30 into columns of varying shapes and heights. The principle of friction stir backfill spot welding is utilized to achieve both column-plate connection and column 30 formation. Columns 30 of varying shapes and axial dimensions, such as solid columns or perforated columns, can be obtained as needed. This method not only achieves high-strength and efficient column-plate connection and forming, but also allows columns 30 of varying shapes and axial dimensions to be obtained from a single original column 10, eliminating the need for additional machining and thus reducing production costs.

[0063] In some embodiments, the outer diameter of the original column 10 is larger than the outer diameter of the stirring needle 40 and smaller than the inner diameter of the compression sleeve 60. This is conducive to ensuring the connection between the column 30 and the plate 20 and the formation of the column 30.

[0064] In some embodiments, in steps S2 to S4, the stirring needle 40 and the stirring sleeve 50 rotate at the same speed or at a differential speed, and the stirring needle 40 and the stirring sleeve 50 rotate in the same direction or in opposite directions, which can be selected according to actual needs.

[0065] In some embodiments, in step S3 and / or step S4, the axial moving speed of the stirring needle 40 and the axial moving speed of the stirring sleeve 50 satisfy the following relationship:

[0066] V 搅拌针 :V 搅拌套 =S 搅拌套 :S 搅拌针 ;

[0067] Among them, V 搅拌针 and V 搅拌套 are the axial moving speeds of the stirring needle 40 and the axial moving speed of the stirring sleeve 50, S 搅拌套 and S 搅拌针They are respectively the annular area of ​​the stirring end surface of the stirring sleeve 50 and the circular area of ​​the stirring end surface of the stirring needle 40. This is conducive to ensuring the connection between the column 30 and the plate 20 and the shaping of the column 30.

[0068] In some embodiments, step S3 includes a first welding motion mode and / or a second welding motion mode.

[0069] Among them, the first welding motion mode is: first, as Figure 3a As shown, the stirring needle 40 moves forward in the axial direction, and the stirring sleeve 50 moves back in the axial direction until the stirring needle 40 enters the plate body 20, breaking the interface between the original column 10 and the plate body 20; then, as shown in FIG. Figure 3b As shown, the stirring needle 40 retreats axially, while the stirring sleeve 50 advances axially until the stirring sleeve 50 enters the plate body 20, breaking the interface between the original column 10 and the plate body 20, thereby completing the column-plate welding, with high column-plate connection strength and high column-plate welding efficiency.

[0070] The second welding motion mode is: first, if Figure 3c As shown, the stirring needle 40 retreats axially, while the stirring sleeve 50 advances axially until the stirring sleeve 50 enters the plate body 20, breaking the interface between the original column 10 and the plate body 20; then, as shown Figure 3d As shown, the stirring needle 40 advances axially, and the stirring sleeve 50 retreats axially until the stirring needle 40 enters the plate body 20, breaking the interface between the original column 10 and the plate body 20, thereby completing the column-plate welding, with high column-plate connection strength and high column-plate welding efficiency.

[0071] In some embodiments, step S4 includes a first forming motion pattern and / or a second forming motion pattern.

[0072] The first forming motion mode is as follows: first, the stirring needle 40 advances in the axial direction while the stirring sleeve 50 retreats in the axial direction; then, the stirring needle 40 retreats in the axial direction while the stirring sleeve 50 advances in the axial direction until the stirring end surfaces of the stirring needle 40 and the stirring end surfaces of the stirring sleeve 50 stop at their respective predetermined final stop positions, thereby forming the desired column 30. Alternatively, the first forming motion mode is as follows: the stirring needle 40 advances in the axial direction while the stirring sleeve 50 retreats in the axial direction until the stirring end surfaces of the stirring needle 40 and the stirring end surfaces of the stirring sleeve 50 stop at their respective predetermined final stop positions, thereby forming the desired column 30.

[0073] The second forming motion mode is as follows: first, the stirring sleeve 50 advances in the axial direction while the stirring pin 40 retreats in the axial direction; then, the stirring sleeve 50 retreats in the axial direction while the stirring pin 40 advances in the axial direction until the stirring end surfaces of the stirring pin 40 and the stirring end surfaces of the stirring sleeve 50 stop at their respective predetermined final stop positions, thereby forming the desired column 30. Alternatively, the second forming motion mode is as follows: the stirring sleeve 50 advances in the axial direction while the stirring pin 40 retreats in the axial direction until the stirring end surfaces of the stirring pin 40 and the stirring end surfaces of the stirring sleeve 50 stop at their respective predetermined final stop positions, thereby forming the desired column 30.

[0074] Specifically, in step S4 , the predetermined final stop positions of the stirring end surface of the stirring needle 40 and the predetermined final stop positions of the stirring end surface of the stirring sleeve 50 are determined by the shape and axial dimension of the column 30 .

[0075] The predetermined final stopping position of the stirring end surface of the stirring needle 40 and the predetermined final stopping position of the stirring end surface of the stirring sleeve 50 may be flush or not.

[0076] The predetermined final stop position of the stirring end surface of the stirring needle 40 and the predetermined final stop position of the stirring end surface of the stirring sleeve 50 can be flush, and when the predetermined final stop position of the stirring end surface of the stirring needle 40 is located behind the predetermined final stop position of the stirring end surface of the stirring sleeve 50 (such as Figure 4a As shown), the cylinder 30 is a solid cylinder; when the predetermined final stop position of the stirring end surface of the stirring needle 40 is located in front of the predetermined final stop position of the stirring end surface of the stirring sleeve 50 (as shown Figure 4b As shown), the column 30 is a column with holes.

[0077] In addition, it should be noted that the shapes of the columns 30 formed by the two welding motion modes in step S3 and the two forming actions in step S4 can be combined in pairs, that is, step S3 can use the first welding motion mode and the second welding motion mode to obtain a column with holes or a column without holes (solid column).

[0078] In summary, the method for simultaneously welding and forming columns on a plate according to an embodiment of the present invention utilizes a stir friction backfill spot welding tool to simultaneously weld and form the original column 10 onto the plate 20 into columns 30 of varying shapes and heights. The principle of stir friction backfill spot welding is utilized to achieve column-plate connection and column 30 formation, enabling columns 30 of varying shapes and axial dimensions, such as solid columns or perforated columns, to be obtained as needed. This method not only achieves high-strength and efficient column-plate connection and forming, but also allows columns 30 of varying shapes and axial dimensions to be obtained from a single original column 10, eliminating the need for additional machining and thus reducing production costs.

[0079] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A method for simultaneously achieving column welding and forming on a plate, characterized in that: The original column is welded to the plate body simultaneously using a stir friction backfill spot welding tool to form columns of different shapes and heights; The friction stir backfill spot welding tool comprises a stirring needle, a stirring sleeve and a pressing sleeve coaxially arranged from the inside to the outside; The method comprises the following steps: S1: placing the original column on the plate; S2: The non-rotating pressing sleeve is arranged on the outer periphery of the original column and axially pressed on the plate body, so that the rotating stirring needle and the rotating stirring sleeve are axially pressed on the end surface of the original column; S3: moving the rotating stirring needle and the rotating stirring sleeve in opposite directions along the axial direction to break the interface between the original column and the plate body, thereby completing column-plate welding; S4: After the column plate is welded, the rotating stirring needle and the rotating stirring sleeve are moved in opposite directions along the axial direction to form the required column; S5: Separate the friction stir backfill spot welding tool from the plate and the column.

2. The method for simultaneously welding and forming columns on a plate according to claim 1, characterized in that: The outer diameter of the original column is larger than the outer diameter of the stirring needle and smaller than the inner diameter of the compression sleeve.

3. The method for simultaneously welding and forming columns on a plate according to claim 1, characterized in that: In steps S2 to S4, the stirring needle and the stirring sleeve rotate at the same speed or at a different speed, and the stirring needle and the stirring sleeve rotate in the same direction or in opposite directions.

4. The method for simultaneously welding and forming columns on a plate according to claim 1, characterized in that: In step S3 and / or step S4, the axial moving speed of the stirring needle and the axial moving speed of the stirring sleeve satisfy the following relationship: V 搅拌针 :V 搅拌套 =S 搅拌套 :S 搅拌针 ; Among them, V 搅拌针 and V 搅拌套 are the axial moving speeds of the stirring needle and the axial moving speed of the stirring sleeve, respectively. 搅拌套 and S 搅拌针 They are respectively the area of ​​the annular ring of the stirring end surface of the stirring sleeve and the circular area of ​​the stirring end surface of the stirring needle.

5. The method for simultaneously welding and forming columns on a plate according to claim 1, characterized in that: Step S3 includes a first welding motion mode and / or a second welding motion mode; The first welding motion mode is as follows: first, the stirring needle advances in the axial direction, while the stirring sleeve retreats in the axial direction until the stirring needle enters the plate body, breaking the interface between the original column and the plate body; then, the stirring needle retreats in the axial direction, while the stirring sleeve advances in the axial direction until the stirring sleeve enters the plate body, breaking the interface between the original column and the plate body, thereby completing the column-plate welding; The second welding motion mode is: first, the stirring needle retracts axially, and at the same time the stirring sleeve advances axially until the stirring sleeve enters the plate body, breaking the interface between the original column and the plate body; then, the stirring needle advances axially, and at the same time the stirring sleeve retracts axially until the stirring needle enters the plate body, breaking the interface between the original column and the plate body, thereby completing the column-plate welding.

6. The method for simultaneously welding and forming columns on a plate according to claim 1, characterized in that: Step S4 includes a first forming motion mode and / or a second forming motion mode; Wherein, the first forming motion mode is: first, the stirring needle advances in the axial direction, and the stirring sleeve retreats in the axial direction; then, the stirring needle retreats in the axial direction, and the stirring sleeve advances in the axial direction, until the stirring end surface of the stirring needle and the stirring end surface of the stirring sleeve stop at their respective predetermined final stop positions, thereby forming the desired column; or, the first forming motion mode is: the stirring needle advances in the axial direction, and the stirring sleeve retreats in the axial direction, until the stirring end surface of the stirring needle and the stirring end surface of the stirring sleeve stop at their respective predetermined final stop positions, thereby forming the desired column; The second forming motion mode is: first, the stirring sleeve advances axially, and the stirring needle retreats axially; then, the stirring sleeve retreats axially, and the stirring needle advances axially, until the stirring end surface of the stirring needle and the stirring end surface of the stirring sleeve stay at their respective predetermined final stop positions, thereby forming the required column; or the second forming motion mode is: the stirring sleeve advances axially, and the stirring needle retreats axially, until the stirring end surface of the stirring needle and the stirring end surface of the stirring sleeve stay at their respective predetermined final stop positions, thereby forming the required column.

7. The method for simultaneously welding and forming columns on a plate according to claim 6, characterized in that: In step S4 , the predetermined final stop position of the stirring end surface of the stirring needle and the predetermined final stop position of the stirring end surface of the stirring sleeve are determined by the shape and axial size of the column.

8. The method for simultaneously welding and forming columns on a plate according to claim 6, characterized in that: The predetermined final stop position of the stirring end surface of the stirring needle and the predetermined final stop position of the stirring end surface of the stirring sleeve may be flush or not flush.

9. The method for simultaneously welding and forming columns on a plate according to claim 1, characterized in that: The predetermined final stop position of the stirring end surface of the stirring needle and the predetermined final stop position of the stirring end surface of the stirring sleeve can be flush, and when the predetermined final stop position of the stirring end surface of the stirring needle is located behind the predetermined final stop position of the stirring end surface of the stirring sleeve, the column is a solid column; when the predetermined final stop position of the stirring end surface of the stirring needle is located in front of the predetermined final stop position of the stirring end surface of the stirring sleeve, the column is a column with holes.

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