Welding auxiliary tool with stress compensation function

Abstract

The invention relates to the technical field of welding, and particularly discloses a welding auxiliary tool with a stress compensation function, the welding auxiliary tool comprises a bottom frame, a top frame, a first lower pressing piece, a first side pressing piece, a stress detection piece and a controller, the bottom frame is provided with a first welding table, the height of the first welding table can be adjusted in the first direction, and the first welding table is used for supporting two first workpieces; the welding ends of the two first workpieces are arranged in a spaced mode in the second direction and form a first welding gap, and the first downward pressing piece is telescopically arranged on the top frame and used for pressing the opposite welding ends of the two first workpieces on the first welding table; the first side pressing piece is telescopically arranged on the bottom frame and used for extruding the first workpiece in the second direction so as to adjust the size of the first welding gap, and the stress detection piece is used for detecting the welding stress; according to the welding auxiliary tool, the controller can obtain the welding stress value of the first welding gap through the stress detection piece, and the welding stress value is adjusted by adjusting at least one of the height of the first welding table and the pressure of the first pressing piece.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and in particular to a welding auxiliary tooling with stress compensation function. Background Technology

[0002] In the field of automated welding production, the workpiece clamping and fixing accuracy, joint alignment accuracy, and stress control during the welding process are the core technical factors that determine the final welding quality and the yield rate of finished products. Currently, the welding robot tooling mechanisms widely used in industrial production generally rely on fixed fixtures or mechanical structures that require manual adjustment. These mechanisms have significant shortcomings in adaptability, accuracy, and dynamic control, and have become a bottleneck restricting further improvements in welding quality.

[0003] Specifically, traditional tooling mechanisms have the following shortcomings: In terms of welding stress control, the high-temperature heat input generated during the welding process leads to significant thermal stress and deformation within the workpiece. Traditional tooling mechanisms are functionally limited, providing only fixed support and failing to monitor real-time changes in the workpiece's stress state during welding, let alone proactively apply compensation adjustments to counteract thermal stress. This problem is particularly pronounced when welding curved workpieces, thin-walled components, and other structurally rigid and easily deformable parts, often resulting in unacceptable warping, twisting, or even cracking after welding. This not only increases the cost of subsequent straightening or scrapping but also limits the application scope of high-precision welding processes. Summary of the Invention

[0004] The purpose of this invention is to provide a welding auxiliary tooling with stress compensation function. By applying pressure reasonably during the welding process, the metal at the weld joint can undergo local plastic elongation, releasing some elastic strain energy, thereby effectively reducing the peak value of residual tensile stress and making its distribution more uniform, which helps to extend fatigue life.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A welding auxiliary tooling with stress compensation function includes:

[0007] The base frame is provided with a first welding station, the height of which can be adjusted along a first direction. The first welding station is used to support two first workpieces, and the welding ends of the two first workpieces are spaced apart along a second direction to form a first welding gap.

[0008] A top frame is spaced above the base frame along a first direction;

[0009] The first pressing member is telescopically mounted on the top frame and is used to press the opposite welding ends of the two first workpieces onto the first welding platform.

[0010] The first side pressure member is telescopically mounted on the base frame and is used to press the first workpiece along the second direction to adjust the size of the first welding gap;

[0011] A stress detection device is mounted on the top frame and is used to detect the welding stress at the first welding gap.

[0012] The controller is mounted on the base frame and electrically connected to the height adjustment mechanism of the first welding station, the first pressing component, the first side pressing component, and the stress detection component. The controller can obtain the welding stress value at the first welding gap through the stress detection component, and can adjust the welding stress value at the first welding gap by adjusting at least one of the height of the first welding station and the pressure of the first pressing component, so that the welding stress value of the first welding gap is kept within the stress threshold.

[0013] Preferably, the base frame is provided with a second welding station, the second welding station can be adjusted in height along the first direction, the second welding station is used to support the first workpiece and the second workpiece, the welding ends of the first workpiece and the second workpiece are spaced apart along the second direction to form a second welding gap, and the stress detection element is used to detect the welding stress at the second welding gap.

[0014] Welding auxiliary tooling with stress compensation function also includes:

[0015] The second pressing member is telescopically mounted on the top frame and is used to press the welding ends of the first workpiece and the second workpiece onto the second welding platform.

[0016] The second side pressure member is telescopically disposed on the second welding station and is used to press the second workpiece along the second direction to adjust the size of the second welding gap;

[0017] The controller is electrically connected to the height adjustment mechanism of the second welding station, the second lower pressure component, and the second side pressure component. The controller can obtain the welding stress value at the second welding gap through the stress detection component, and can adjust the welding stress value at the second welding gap by adjusting at least one of the height of the second welding station and the pressure of the second lower pressure component, so that the welding stress value of the second welding gap is kept within the stress threshold.

[0018] Preferably, the first welding station is provided with a first height detection element, and the second welding station is provided with a second height detection element. Both the first height detection element and the second height detection element are electrically connected to the controller. The first height detection element is used to detect the height of the first welding station, and the second height detection element is used to detect the height of the second welding station.

[0019] Preferably, it also includes:

[0020] The first pressure detection element is used to detect the downward pressure of the first pressing element;

[0021] The second pressure detection element is used to detect the side pressure of the first side pressure element;

[0022] The third pressure detection element is used to detect the downward pressure of the second pressing element;

[0023] The fourth pressure detection element is used to detect the side pressure of the second side pressure element.

[0024] Preferably, the first welding station is provided with a first positioning groove and a first clearance groove. The first positioning groove is opened at the support end of the first welding station, and the first clearance groove is opened at the bottom of the first positioning groove. The first positioning groove is used to position and support the two first workpieces, and the first clearance groove is used to allow the welding gun to pass through.

[0025] The second welding station is provided with a second positioning groove and a second clearance groove. The second positioning groove is opened at the support end of the second welding station, and the second clearance groove is opened at the bottom of the second positioning groove. The second positioning groove is used to position and support the first workpiece and the second workpiece, and the second clearance groove is used to allow the welding gun to pass through.

[0026] Preferably, the first pressing member includes a first telescopic member and a first pressure roller. The fixed end of the first telescopic member is fixed to the top frame, and the first pressure roller is rotatably disposed at the telescopic end of the first telescopic member. The first pressure roller is used to press the first workpiece.

[0027] The first side pressure member includes a second telescopic member and a first pressure plate. The fixed end of the second telescopic member is fixed to the base frame, and the first pressure plate is disposed at the telescopic end of the second telescopic member. The first pressure plate is used to press the first workpiece.

[0028] The second pressing component includes a third telescopic component and a second pressure roller. The fixed end of the third telescopic component is fixed to the top frame, and the second pressure roller is rotatably disposed at the telescopic end of the third telescopic component. The second pressure roller is used to press the first workpiece and the second workpiece.

[0029] The second side pressure member includes a fourth telescopic member and a second pressure plate. The fixed end of the fourth telescopic member is fixed to the second welding station, and the second pressure plate is located at the telescopic end of the fourth telescopic member. The second pressure plate is used to press the second workpiece.

[0030] Preferably, the first welding station is provided with a first guide rod extending in a first direction, and the base frame is provided with a first sliding hole, wherein the first guide rod is slidably connected to the first sliding hole;

[0031] The second welding station is provided with a second guide rod extending along the first direction, and the base frame is provided with a second sliding hole, wherein the second guide rod is slidably connected to the second sliding hole;

[0032] The first pressure plate is provided with a third guide rod extending in the second direction, and the base frame is provided with a third sliding hole, and the third guide rod is slidably connected to the third sliding hole;

[0033] The telescopic end of the first telescopic member is provided with a first movable plate, the first pressure roller is rotatably mounted on the first movable plate, the first movable plate extends along a first direction and is provided with a fourth guide rod, the top frame is provided with a fourth sliding hole, and the fourth guide rod is slidably connected to the fourth sliding hole;

[0034] The telescopic end of the third telescopic member is provided with a second movable plate, the second pressure roller is rotatably mounted on the second movable plate, the second movable plate extends along the first direction and is provided with a fifth guide rod, the top frame is provided with a fifth sliding hole, and the fifth guide rod is slidably connected to the fifth sliding hole.

[0035] Preferably, the first pressure plate is provided with a first groove, and the side end of the first workpiece along the second direction can be inserted into the first groove;

[0036] The second pressure plate has a second groove, and the side end of the second workpiece along the second direction can be inserted into the second groove.

[0037] Preferably, the first telescopic member, the second telescopic member, the third telescopic member, and the fourth telescopic member are all configured as hydraulic telescopic rods.

[0038] Preferably, the height adjustment mechanism of the first welding station includes a first height adjustment component, the first welding station is disposed on the first height adjustment component, and the height of the first welding station is adjusted by the first height adjustment component.

[0039] The height adjustment mechanism of the second welding station includes a second height adjustment component, the second welding station is disposed on the second height adjustment component, and the height of the second welding station is adjusted by the second height adjustment component.

[0040] Beneficial effects:

[0041] The welding auxiliary fixture with stress compensation function provided by this invention supports two first workpieces to be welded on a first welding platform. The two first workpieces are placed at intervals along a second direction, and their two opposing welding ends together form a first welding gap. After the first workpieces are supported, the height adjustment mechanism of the first welding platform is controlled by a controller to adjust the first welding platform to the target welding height. Subsequently, the controller controls the first lower pressure member to extend outward relative to the top frame along a first direction, pressing the opposing welding ends of the two first workpieces onto the first welding platform with a preset pressure. Then, the first welding gap is aligned according to the target size of the first welding gap. The controller controls the first side pressure member to extend outward relative to the base frame along a second direction, squeezing the side of the first workpiece along the second direction, thereby pushing the first workpiece, causing the two first workpieces to move relative to each other along the second direction to adjust the size of the first welding gap until the first welding gap reaches the target size, completing the alignment work. Then, the welding work of the two first workpieces can be carried out. The welding torch moves along the first welding gap to weld the first welding gap, so that the first welding gap can finally be welded to form a weld. During welding, the stress detection component monitors the welding stress value at the first welding gap in real time and sends the detected value to the controller. The controller compares the value with a stress threshold. When the welding stress value exceeds the threshold, the pressure acting on the first workpiece can be adjusted by individually adjusting the height of the first welding station, individually adjusting the pressure of the first pressing component, or simultaneously adjusting both the height of the first welding station and the pressure of the first pressing component. This adjusts the stress at the first welding gap, keeping it within the stress threshold. This fixture can support and position the two first workpieces, adjust the size of the welding gap, and adjust the welding stress at the welding point by changing the pressure acting on the first workpieces during welding. By applying appropriate pressure, local plastic elongation of the metal at the weld joint can be induced, releasing some elastic strain energy, thereby effectively reducing the residual tensile stress peak and making its distribution more uniform, which helps to extend fatigue life. Attached Figure Description

[0042] Figure 1 A schematic diagram of the welding auxiliary tooling with stress compensation function provided by the present invention from one perspective;

[0043] Figure 2 Another structural schematic diagram of the welding auxiliary tooling with stress compensation function provided by the present invention;

[0044] Figure 3 Another structural schematic diagram of the welding auxiliary tooling with stress compensation function provided by the present invention;

[0045] Figure 4 This is a structural schematic diagram of the side pressure component provided by the present invention;

[0046] Figure 5 Provided for the present invention Figure 2 A magnified view of a portion of point A in the middle.

[0047] In the picture:

[0048] 100. First workpiece; 200. Second workpiece;

[0049] 1. Base frame; 11. First welding station; 111. First height detection component; 112. First clearance groove; 113. First guide rod; 12. Second welding station; 121. Second height detection component; 122. Second clearance groove; 123. Second guide rod; 13. First height adjustment component; 14. Second height adjustment component;

[0050] 2. Top frame; 21. Stress testing components;

[0051] 31. First telescopic component; 32. First pressure roller; 33. First movable plate; 34. Fourth guide rod;

[0052] 41. Second telescopic component; 42. First pressure plate; 421. First groove; 43. Third guide rod;

[0053] 51. Third telescopic component; 52. Second pressure roller; 53. Second movable plate; 54. Fifth guide rod;

[0054] 61. Fourth telescopic component; 62. Second pressure plate; 621. Second groove;

[0055] 7. Controller;

[0056] 81. First pressure testing element; 82. Second pressure testing element; 83. Third pressure testing element; 84. Fourth pressure testing element. Detailed Implementation

[0057] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0059] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0060] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0061] This embodiment provides a welding auxiliary tooling with force compensation function. (Refer to...) Figures 1 to 5As shown, the auxiliary tooling includes a base frame 1, a top frame 2, a first lower pressure member, a first side pressure member, a stress detection member 21, and a controller 7. The base frame 1 is equipped with a first welding station 11, the height of which is adjustable along a first direction. The first welding station 11 supports two first workpieces 100, whose welding ends are spaced apart along a second direction to form a first welding gap. The top frame 2 is positioned above the base frame 1 along the first direction. The first lower pressure member is retractable and mounted on the top frame 2, used to press the opposing welding ends of the two first workpieces 100 onto the first welding station 11. The first side pressure member is retractable and mounted on the base frame 1, used to press the first workpieces 100 along the second direction to adjust the first welding gap. The size of the gap; the stress detection element 21 is installed on the top frame 2 and is used to detect the welding stress at the first welding gap; the controller 7 is installed on the base frame 1 and is electrically connected to the height adjustment mechanism of the first welding station 11, the first lower pressure element, the first side pressure element, and the stress detection element 21. The controller 7 can obtain the welding stress value at the first welding gap through the stress detection element 21, and can adjust the welding stress value at the first welding gap by adjusting at least one of the height of the first welding station 11 and the pressure of the first lower pressure element, so that the welding stress value of the first welding gap is kept within the stress threshold.

[0062] In this embodiment, the first direction can be set to the vertical direction, and the second direction can be set to the horizontal direction.

[0063] In this embodiment, two first workpieces 100 to be welded are supported on a first welding station 11. The two first workpieces 100 are placed at intervals along a second direction, and the two opposite welding ends together form a first welding gap. After the first workpieces 100 are supported, the controller 7 controls the height adjustment mechanism of the first welding station 11 to adjust the first welding station 11 to the target welding height. Then, the controller 7 controls the first pressing member to extend outward relative to the top frame 2 along a first direction, pressing the opposite welding ends of the two first workpieces 100 onto the first welding station 11 with a preset pressure. Then, the first welding gap is aligned according to the target size of the first welding gap. The controller 7 controls the first side pressing member to extend outward relative to the base frame 1 along a second direction, squeezing the side of the first workpiece 100 along the second direction, thereby pushing the first workpiece 100, causing the two first workpieces 100 to move relative to each other along the second direction to adjust the size of the first welding gap, until the first welding gap reaches the target size, completing the alignment work. Subsequently, welding can be performed on the two first workpieces 100. The welding torch moves along the first welding gap to weld the gap, ultimately forming a weld. During welding, the stress detection component 21 monitors the welding stress value at the first welding gap in real time and sends the detected value to the controller 7. The controller 7 compares this value with a stress threshold. If the welding stress value exceeds the threshold, the pressure acting on the first workpiece 100 can be adjusted by individually adjusting the height of the first welding station 11, individually adjusting the pressure of the first pressing component, or simultaneously adjusting both the height of the first welding station 11 and the pressure of the first pressing component. This adjusts the stress at the first welding gap, keeping it within the stress threshold. This fixture can support and position the two first workpieces 100, adjust the size of the welding gap, and apply a reverse compensation force to the first workpieces 100 by changing the pressure acting on them during welding, thus adjusting the welding stress at the welding point. By applying appropriate pressure, the metal at the weld joint can undergo localized plastic elongation, releasing some elastic strain energy, thereby effectively reducing the peak value of residual tensile stress and making its distribution more uniform, which helps to extend fatigue life.

[0064] Furthermore, a second welding station 12 is provided on the base frame 1. The height of the second welding station 12 can be adjusted along the first direction. The second welding station 12 is used to support the first workpiece 100 and the second workpiece 200. The welding ends of the first workpiece 100 and the second workpiece 200 are spaced apart along the second direction to form a second welding gap. The welding auxiliary tooling also includes a second lower pressure member and a second side pressure member. Specifically, the second pressing member is retractably mounted on the top frame 2 and is used to press the welding ends of the first workpiece 100 and the second workpiece 200 onto the second welding station 12; the second side pressing member is retractably mounted on the second welding station 12 and is used to press the second workpiece 200 along the second direction to adjust the size of the second welding gap; the stress detection member 21 is used to detect the welding stress at the second welding gap; the controller 7 is electrically connected to the height adjustment mechanism of the second welding station 12, the second pressing member, and the second side pressing member. The controller 7 can obtain the welding stress value at the second welding gap through the stress detection member 21, and can adjust the welding stress value at the second welding gap by adjusting at least one of the height of the second welding station 12 and the pressure of the second pressing member, so that the welding stress value of the second welding gap is kept within the stress threshold.

[0065] In this embodiment, the fixture can not only weld between two first workpieces 100, but also weld two different types of workpieces, the first workpiece 100 and the second workpiece 200. Specifically, one end of the first workpiece 100 along the second direction is welded to another first workpiece 100, and the other end is welded to the second workpiece 200. The first workpiece 100 and the second workpiece 200 are placed at intervals along the second direction, and the welding ends of the first workpiece 100 and the second workpiece 200 together form a second welding gap. After the first workpiece 100 and the second workpiece 200 are supported on the second welding station 12, the controller 7 controls the height adjustment mechanism of the second welding station 12 to adjust the second welding station 12 to the target welding height. Then, the controller 7 controls the second pressing member to extend outward relative to the top frame 2 along the first direction, pressing the welding ends of the first workpiece 100 and the second workpiece 200 onto the second welding station 12 with a preset pressure. Then, the second welding gap is aligned according to the target size of the second welding gap. The controller 7 controls the second side pressure member to extend outward relative to the base frame 1 in a second direction, pressing the side of the second workpiece 200 in the second direction, thereby pushing the second workpiece 200 against the first workpiece 100, causing the second workpiece 200 to move relative to the first workpiece 100 to adjust the second welding gap size until the second welding gap reaches the target size, completing the seam alignment. Welding can then be performed between the first workpiece 100 and the second workpiece 200 by moving a welding torch along the second welding gap to weld the second welding gap, ultimately forming a weld. During the welding process, the stress detection component 21 detects the welding stress value at the second welding gap in real time and sends the detected welding stress value to the controller 7. The controller 7 compares the value with a stress threshold. When the welding stress value exceeds the stress threshold, the pressure acting on the first workpiece 100 and the second workpiece 200 can be adjusted by individually adjusting the height of the second welding station 12, individually adjusting the pressure of the second pressing component, or simultaneously adjusting the height of the second welding station 12 and the pressure of the second pressing component. This adjusts the stress at the second welding gap accordingly, keeping the welding stress value of the second welding gap within the stress threshold. This fixture can support and position the first workpiece 100 and the second workpiece 200, adjust the size of the welding gap, and apply a reverse compensation force to the first workpiece 100 and the second workpiece 200 by changing the pressure acting on them during the welding process, thereby adjusting the welding stress at the welding point of the first workpiece 100 and the second workpiece 200. By applying appropriate pressure, the metal at the weld joint can undergo localized plastic elongation, releasing some elastic strain energy, thereby effectively reducing the peak value of residual tensile stress and making its distribution more uniform, which helps to extend fatigue life.

[0066] For example, the stress detection element 21 can be configured as an electromagnetic ultrasonic stress detection module. In some other optional embodiments, the stress detection element 21 may also include components such as a first strain gauge, a first temperature sensor, a second strain gauge, and a second temperature sensor, wherein the first strain gauge is attached to the welding position of the two first workpieces 100, the first temperature sensor can detect the temperature of the first welding gap, and the welding stress of the first welding gap can be obtained from the above parameters. The second strain gauge is attached to the welding position of the first workpiece 100 and the second workpiece 200, the second temperature sensor can detect the temperature of the second welding gap, and the welding stress of the second welding gap can be obtained from the above parameters.

[0067] In this embodiment, a first height detection element 111 is provided on the first soldering station 11, and a second height detection element 121 is provided on the second soldering station 12. Both the first height detection element 111 and the second height detection element 121 are electrically connected to the controller 7. The first height detection element 111 is used to detect the height of the first soldering station 11, and the second height detection element 121 is used to detect the height of the second soldering station 12. Exemplarily, the first height detection element 111 is located at the bottom of the first soldering station 11, and the second height detection element 121 is located at the bottom of the second soldering station 12. Both the first height detection element 111 and the second height detection element 121 are configured as infrared rangefinders.

[0068] In this embodiment, the welding auxiliary tooling further includes a first pressure detection element 81, a second pressure detection element 82, a third pressure detection element 83, and a fourth pressure detection element 84. The first pressure detection element 81 detects the downward pressure of the first pressing element; the second pressure detection element 82 detects the side pressure of the first side pressing element; the third pressure detection element 83 detects the downward pressure of the second pressing element; and the fourth pressure detection element 84 detects the side pressure of the second side pressing element. Specifically, the first pressure detection element 81, the second pressure detection element 82, the third pressure detection element 83, and the fourth pressure detection element 84 are all electrically connected to the controller 7. These elements can send their measured pressure data to the controller 7, thereby acquiring the various pressure values ​​in real time for monitoring and real-time control.

[0069] For example, the first pressure detection element 81, the second pressure detection element 82, the third pressure detection element 83 and the fourth pressure detection element 84 are all configured as pressure sensors.

[0070] Furthermore, the first welding station 11 is provided with a first positioning groove and a first clearance groove 112. The first positioning groove is formed at the support end of the first welding station 11, and the first clearance groove 112 is formed at the bottom of the first positioning groove. The first positioning groove is used to position and support the two first workpieces 100, and the first clearance groove 112 is used to allow the welding torch to pass through. Specifically, the first positioning groove facilitates the positioning of the two first workpieces 100. The first clearance groove 112 formed at the bottom of the first positioning groove allows the welding torch to pass through the bottom part of the first welding gap between the two first workpieces 100, and to perform welding from the bottom.

[0071] Furthermore, the second welding station 12 is provided with a second positioning groove and a second clearance groove 122. The second positioning groove is formed at the support end of the second welding station 12, and the second clearance groove 122 is formed at the bottom of the second positioning groove. The second positioning groove is used to position and support the first workpiece 100 and the second workpiece 200, and the second clearance groove 122 is used to allow the welding torch to pass through. Specifically, the second positioning groove facilitates the positioning of the first workpiece 100 and the second workpiece 200. The second clearance groove 122 formed at the bottom of the second positioning groove allows the welding torch to pass through the bottom part of the second welding gap between the first workpiece 100 and the second workpiece 200, and to perform welding from the bottom.

[0072] In this embodiment, the first pressing component includes a first telescopic component 31 and a first pressure roller 32. The fixed end of the first telescopic component 31 is fixed to the top frame 2, and the first pressure roller 32 is rotatably disposed at the telescopic end of the first telescopic component 31. The first pressure roller 32 is used to press the first workpiece 100. Specifically, two sets of first telescopic components 31 and first pressure rollers 32 are provided, and at least one first telescopic component 31 and first pressure roller 32 are provided in each set. The first pressure roller 32 is rotatably disposed at the telescopic end of the corresponding first telescopic component 31. Specifically, one set of first telescopic components 31 and first pressure rollers 32 is used to press one of the first workpieces 100, and the other set of first telescopic components 31 and first pressure rollers 32 is used to press another first workpiece 100. The telescopic end of the first telescopic component 31 can extend and retract at the fixed end in a first direction, thereby enabling the first pressure roller 32 to move in the first direction and controlling the first pressure roller 32 to press onto the first workpiece 100. In addition, the first pressure roller 32 is rotatable. During the seam alignment process of the first welding gap, the first side pressure member squeezes and pushes the first workpiece 100 to move. The first pressure roller 32 presses on the first workpiece 100. The movement of the first workpiece 100 can drive the first pressure roller 32 to rotate, which does not affect the downward pressure on the first workpiece 100 and also avoids relative friction damage to the first workpiece 100.

[0073] In this embodiment, the second pressing member includes a third telescopic member 51 and a second pressure roller 52. The fixed end of the third telescopic member 51 is fixed to the top frame 2, and the second pressure roller 52 is rotatably disposed on the telescopic end of the third telescopic member 51. The second pressure roller 52 is used to press the first workpiece 100 and the second workpiece 200. Specifically, two sets of third telescopic members 51 and second pressure rollers 52 are provided, and at least one third telescopic member 51 and second pressure roller 52 are provided in each set. The second pressure roller 52 is rotatably disposed on the telescopic end of the corresponding third telescopic member 51. Specifically, one set of third telescopic members 51 and second pressure rollers 52 is used to press the first workpiece 100, and the other set of third telescopic members 51 and second pressure rollers 52 is used to press the second workpiece 200. The telescopic end of the third telescopic member 51 can extend and retract at the fixed end in a first direction, thereby enabling the second pressure roller 52 to move in the first direction and controlling the second pressure roller 52 to press on the first workpiece 100 and the second workpiece 200. In addition, the second pressure roller 52 is rotatable. During the seam alignment process of the second welding gap, the second side pressure member squeezes and pushes the second workpiece 200 to move. The second pressure roller 52 presses on the second workpiece 200. The movement of the second workpiece 200 can drive the second pressure roller 52 to rotate, which does not affect the downward pressure on the second workpiece 200 and also avoids relative friction damage to the second workpiece 200.

[0074] In this embodiment, the first side pressing member includes a second telescopic member 41 and a first pressing plate 42. The fixed end of the second telescopic member 41 is fixed to the base frame 1, and the first pressing plate 42 is disposed at the telescopic end of the second telescopic member 41. The first pressing plate 42 is used to press the first workpiece 100. Specifically, two sets of second telescopic members 41 and first pressing plates 42 are provided, and at least one set of second telescopic members 41 and first pressing plates 42 is provided in each set. The first pressing plate 42 is disposed at the telescopic end of the corresponding second telescopic member 41. Specifically, one set of second telescopic members 41 and first pressing plates 42 is used to press one of the first workpieces 100, and the other set of second telescopic members 41 and first pressing plates 42 is used to press another first workpiece 100. The telescopic end of the second telescopic member 41 can extend and retract at the fixed end in a second direction, thereby allowing the first pressing plate 42 to move in the second direction and control the first pressing plate 42 to press onto the first workpiece 100 on the corresponding side.

[0075] In this embodiment, the second side pressure member includes a fourth telescopic member 61 and a second pressure plate 62. The fixed end of the fourth telescopic member 61 is fixed to the second welding station 12, and the second pressure plate 62 is disposed at the telescopic end of the fourth telescopic member 61. The second pressure plate 62 is used to press the second workpiece 200. Specifically, the first workpiece 100 needs to weld the second workpiece 200 to both opposite sides along the second direction, so that the corresponding side of each second workpiece 200 needs to be provided with a fourth telescopic member 61 and a second pressure plate 62. Specifically, there are two sets of fourth telescopic members 61 and second pressure plates 62, and each set has at least one fourth telescopic member 61 and a second pressure plate 62 corresponding to each other. The second pressure plate 62 is disposed at the telescopic end of the corresponding fourth telescopic member 61. Specifically, one set of fourth telescopic members 61 and second pressure plates 62 is used to press the second workpiece 200 on one side, and the other set of fourth telescopic members 61 and second pressure plates 62 is used to press the second workpiece 200 on the other side. The telescopic end of the fourth telescopic member 61 can extend and retract along the second direction to the fixed end, thereby enabling the second pressure plate 62 to move along the second direction and control the second pressure plate 62 to press onto the second workpiece 200 on the corresponding side.

[0076] For example, the first telescopic member 31, the second telescopic member 41, the third telescopic member 51, and the fourth telescopic member 61 are all configured as hydraulic telescopic rods.

[0077] Understandably, for some cases where the second workpiece 200 is bent, the fourth telescopic component 61 can be configured as an arc-shaped telescopic cylinder with an arc-shaped trajectory at the telescopic end, to ensure that the end of the second workpiece 200 can be pushed more reliably and effectively.

[0078] In this embodiment, the first soldering station 11 is provided with a first guide rod 113 extending along a first direction, and the base frame 1 is provided with a first sliding hole. The first guide rod 113 is slidably connected to the first sliding hole. The sliding engagement between the first guide rod 113 and the first sliding hole allows the first soldering station 11 to be strictly adjusted in height along the first direction, ensuring that the movement of the first soldering station 11 is reliable and stable.

[0079] In this embodiment, the second welding station 12 is provided with a second guide rod 123 extending along the first direction, and the base frame 1 is provided with a second sliding hole. The second guide rod 123 is slidably connected to the second sliding hole. The sliding engagement between the second guide rod 123 and the second sliding hole allows the second welding station 12 to be strictly adjusted in height along the first direction, ensuring that the movement of the second welding station 12 is reliable and stable.

[0080] In this embodiment, the first pressure plate 42 is provided with a third guide rod 43 extending along the second direction, and the base frame 1 is provided with a third sliding hole. The third guide rod 43 is slidably connected to the third sliding hole. The sliding engagement between the third guide rod 43 and the third sliding hole allows the first pressure plate 42 to be strictly adjusted in height along the second direction, ensuring that the movement of the first pressure plate 42 is reliable and stable.

[0081] In this embodiment, the telescopic end of the first telescopic member 31 is provided with a first movable plate 33, the first pressure roller 32 is rotatably mounted on the first movable plate 33, the first movable plate 33 extends along a first direction and is provided with a fourth guide rod 34, the top frame 2 is provided with a fourth sliding hole, and the fourth guide rod 34 is slidably connected to the fourth sliding hole. The sliding engagement between the fourth guide rod 34 and the fourth sliding hole allows the first movable plate 33 to be strictly adjusted in height along the first direction, ensuring that the movement of the first pressure roller 32 is reliable and stable.

[0082] In this embodiment, the telescopic end of the third telescopic member 51 is provided with a second movable plate 53, and the second pressure roller 52 is rotatably mounted on the second movable plate 53. The second movable plate 53 extends along the first direction and is provided with a fifth guide rod 54. The top frame 2 has a fifth sliding hole, and the fifth guide rod 54 is slidably connected to the fifth sliding hole. The sliding engagement between the fifth guide rod 54 and the fifth sliding hole allows the second movable plate 53 to be strictly adjusted in height along the first direction, ensuring that the movement of the second pressure roller 52 is reliable and stable.

[0083] In this embodiment, a first groove 421 is provided on the first pressure plate 42, and the side end of the first workpiece 100 along the second direction can be inserted into the first groove 421. Specifically, the cross-sectional shape of the first pressure plate 42 with the first groove 421 is set to U-shaped or J-shaped. The first groove 421 can be engaged with the side end of the first workpiece 100 to ensure the positioning of the first workpiece 100.

[0084] In this embodiment, a second groove 621 is provided on the second pressure plate 62, and the side end of the second workpiece 200 along the second direction can be inserted into the second groove 621. Specifically, the cross-sectional shape of the second pressure plate 62 with the second groove 621 is set to U-shaped or J-shaped. The second groove 621 can be engaged with the side end of the second workpiece 200 to ensure the positioning of the second workpiece 200.

[0085] In this embodiment, the height adjustment mechanism of the first welding station 11 includes a first height adjustment member 13. The first welding station 11 is disposed on the first height adjustment member 13, and the height of the first welding station 11 is adjusted by the first height adjustment member 13. Specifically, the first height adjustment member 13 is electrically connected to the controller 7. The first height adjustment member 13 can be configured as a hydraulic telescopic rod.

[0086] In this embodiment, the height adjustment mechanism of the second welding station 12 includes a second height adjustment member 14. The second welding station 12 is disposed on the second height adjustment member 14, and the height of the second welding station 12 is adjusted by the second height adjustment member 14. Specifically, the second height adjustment member 14 is electrically connected to the controller 7. The second height adjustment member 14 can be configured as a hydraulic telescopic rod.

[0087] In this embodiment, the controller 7 includes a central processing module, and a signal acquisition module, a control module, and a storage module electrically connected to the central processing module. The signal acquisition module receives detection data from the first height detection element 111, the second height detection element 121, the first pressure detection element 81, the second pressure detection element 82, the third pressure detection element 83, and the fourth pressure detection element 84, and transmits this data to the central processing module. The control module receives instructions from the central processing module and controls the extension and retraction movements of the first telescopic element 31, the second telescopic element 41, the third telescopic element 51, the fourth telescopic element 61, the first height adjustment element 13, and the second height adjustment element 14. The storage module stores preset thresholds for each sensor, workpiece welding parameters, and historical operating data. Furthermore, the controller 7 includes a stress compensation calculation module and a communication module. The stress compensation calculation module, electrically connected to the central processing module, calculates the stress value generated during welding based on the real-time pressure data and height data acquired by the signal acquisition module and the workpiece parameters stored in the storage module, and generates compensation adjustment instructions. The communication module enables bidirectional data interaction between the controller 7 and the welding system, synchronizing welding progress and tooling adjustment parameters. The controller 7 also includes a human-machine interface module and a fault diagnosis module. The human-machine interface module includes a touch screen and operation buttons for operators to input parameters and view real-time data and status information. The fault diagnosis module is used to monitor the operating status of various sensors and hydraulic actuators. When abnormal data is detected, an alarm signal is issued and the fault information is recorded in the storage module. The controller 7 also includes a power management module, which is used to convert the external power supply into the working voltage required by the internal modules of the controller 7 and external sensors and hydraulic control components. It also has overvoltage, overcurrent and short-circuit protection functions, and provides uninterrupted power supply to the storage module to prevent data loss.

[0088] For example, the specific process of simultaneously welding the first workpiece 100 and the second workpiece 200 will be described below. This involves two first workpieces 100 and two second workpieces 200, and welding is required between the two first workpieces 100 and between the first workpieces 100 and the second workpieces 200. There is one first welding gap and two second welding gaps. The specific steps are as follows:

[0089] Step 1: Device Initialization and Parameter Setting

[0090] Upon device startup, the power management module converts external power supply into the operating voltage of each module, providing uninterrupted power to the storage modules.

[0091] The operator inputs workpiece parameters through the human-machine interaction module (touch screen) of the controller 7, including the material, thickness, length, and radius of curvature of the first workpiece 100 and the second workpiece 200, as well as the preset clamping pressure threshold (e.g., clamping pressure of the first workpiece 100 5-10N, clamping pressure of the second workpiece 200 8-12N) and the joint gap threshold (≤0.2mm).

[0092] The controller 7 stores the parameters in the storage module, and the central processing module sends an initialization command to the control module to control the first telescopic component 31, the second telescopic component 41, the third telescopic component 51, the fourth telescopic component 61, the first height adjustment component 13, and the second height adjustment component 14 to reset.

[0093] Step 2: Placement and clamping of the first workpiece 100. The two first workpieces 100 are placed manually or by a robotic arm into the first positioning groove of the first welding station 11 and the second positioning groove of the second welding station 12, respectively.

[0094] The central processing module sends instructions to the control module to control the first height adjustment component 13 and the second height adjustment component 14 to drive the first welding station 11 and the second welding station 12 to rise.

[0095] The first height detection component 111 and the second height detection component 121 collect the height data of the first workpiece 100 in real time and transmit it to the central processing module through the signal acquisition module. When the height reaches the preset welding position, the first welding station 11 and the second welding station 12 stop rising.

[0096] The control module controls the first telescopic component 31 to extend along the first direction and press down the first workpiece 100. The first pressure detection component 81 collects pressure data in real time. When the pressure reaches the preset threshold, the clamping and fixing of the first workpiece 100 is completed.

[0097] Step 3: Adjusting the seam between the two first workpieces 100

[0098] The central processing module sends instructions to the control module to control the second telescopic component 41 to extend along the second direction, thereby causing the first pressure plate 42 to move toward the end of the first workpiece 100.

[0099] When the first groove 421 of the first pressure plate 42 is inserted into the end of the first workpiece 100, the first pressure plate 42 applies a lateral thrust to the first workpiece 100, pushing the first workpiece 100 to move.

[0100] The second pressure detection element 82 collects lateral pressure data in real time. The central processing module determines the first welding gap based on the pressure data (the joint gap is ≤0.2mm when the pressure reaches the preset value). At the same time, the first pressure roller 32 can roll on the upper surface of the first workpiece 100 to assist in fine adjustment of the workpiece position.

[0101] When the size of the first welding gap meets the requirements, the second telescopic component 41 stops, completing the alignment of the two first workpieces 100, and the second telescopic component 41 retracts back to its original position.

[0102] Step 4: Placement, splicing, and seam alignment of the second workpiece 200

[0103] The second workpiece 200 is placed in the second positioning groove of the second welding station 12 by manual labor or a robotic arm.

[0104] The control module controls the third telescopic component 51 to extend downward, driving the second pressure roller 52 to press down the second workpiece 200. The third pressure detection component 83 monitors the pressure until it reaches the preset threshold.

[0105] The central processing module sends instructions to the control module to control the fourth telescopic component 61 to extend, thereby driving the second pressure plate 62 to move toward the end of the second workpiece 200 (for the arc-shaped second workpiece 200 and the arc-shaped hydraulic rod with the arc trajectory, the center of the arc of the arc-shaped hydraulic telescopic rod coincides with the center of the arc surface of the second workpiece 200).

[0106] When the second groove 621 of the second pressure plate 62 is inserted into the end of the second workpiece 200, the second pressure plate 62 applies a lateral thrust to the second workpiece 200, pushing the second workpiece 200 to move, and the fourth pressure detection element 84 collects the thrust data in real time.

[0107] The second height detection component 121 detects the height consistency between the first workpiece 100 and the second workpiece 200. The central processing module determines the joint gap based on the pressure data and height data until the requirements are met, thus completing the alignment of the first workpiece 100 and the second workpiece 200.

[0108] Step 5: Welding coordination and stress compensation

[0109] The controller 7 sends a "tooling ready" signal to the welding robot control system through the communication module and receives a "welding start" signal from the robot.

[0110] The welding robot's welding torch moves within the first clearance groove 112 and the second clearance groove 122 to weld the first welding gap joint of the two first workpieces 100 and the second welding gap between the first workpiece 100 and the second workpiece 200.

[0111] During the welding process, the first pressure detection component 81, the second pressure detection component 82, the third pressure detection component 83, the fourth pressure detection component 84, the first height detection component 111, and the second height detection component 121 continuously collect data. The stress compensation calculation module dynamically calculates the welding stress value based on the real-time data and the preset workpiece parameters.

[0112] When the stress value exceeds the preset threshold, the central processing module generates a compensation command, which adjusts the extension amount of the corresponding telescopic component through the control module, or adjusts the extension amount of the first height adjustment component 13 and the second height adjustment component 14, and applies a reverse compensation force until the stress value returns to normal.

[0113] The communication module synchronizes welding progress and tooling adjustment parameters in real time, ensuring that welding and compensation are carried out in a coordinated manner.

[0114] Step 6: Welding completed and workpiece removed

[0115] After the welding robot completes the welding, it sends a "welding end" signal to the controller 7.

[0116] The central processing module controls the reset of the first telescopic component 31, the second telescopic component 41, the third telescopic component 51, the fourth telescopic component 61, the first height adjustment component 13, and the second height adjustment component 14;

[0117] The first workpiece 100 and the second workpiece 200, after welding, are removed from the first welding station 11 and the second welding station 12 by manual labor or a robotic arm.

[0118] The controller 7 displays the welding parameters (clamping pressure, seam gap, stress compensation) through the human-machine interaction module. If the fault diagnosis module does not detect any abnormalities, the equipment enters the next working cycle; if an abnormality is detected, an alarm signal is issued and fault information is recorded, awaiting maintenance.

[0119] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A welding auxiliary tooling with stress compensation function, characterized in that, include: The base frame (1) is provided with a first welding station (11). The height of the first welding station (11) can be adjusted along a first direction. The first welding station (11) is used to support two first workpieces (100). The welding ends of the two first workpieces (100) are spaced apart along a second direction to form a first welding gap. The top frame (2) is spaced above the base frame (1) along the first direction; The first pressing member is telescopically mounted on the top frame (2) and is used to press the opposite welding ends of the two first workpieces (100) onto the first welding station (11); The first side pressure member is telescopically mounted on the base frame (1) and is used to press the first workpiece (100) along the second direction to adjust the size of the first welding gap; A stress detection component (21) is provided on the top frame (2) and is used to detect the welding stress at the first welding gap; The controller (7) is mounted on the base frame (1) and is electrically connected to the height adjustment mechanism of the first welding station (11), the first pressing component, the first side pressing component, and the stress detection component. The controller (7) can obtain the welding stress value at the first welding gap through the stress detection component, and can adjust the welding stress value at the first welding gap by adjusting at least one of the height of the first welding station (11) and the pressure of the first pressing component, so that the welding stress value of the first welding gap is kept within the stress threshold.

2. The welding auxiliary tooling with stress compensation function according to claim 1, characterized in that, The base frame (1) is provided with a second welding station (12), the second welding station (12) can be adjusted in height along the first direction, the second welding station (12) is used to support the first workpiece (100) and the second workpiece (200), the welding ends of the first workpiece (100) and the second workpiece (200) are spaced apart along the second direction to form a second welding gap, and the stress detection component (21) is used to detect the welding stress at the second welding gap; Welding auxiliary tooling with stress compensation function also includes: The second pressing component is telescopically mounted on the top frame (2) and is used to press the welding ends of the first workpiece (100) and the second workpiece (200) onto the second welding station (12); The second side pressure member is telescopically disposed on the second welding station (12) and is used to press the second workpiece (200) along the second direction to adjust the size of the second welding gap; The controller (7) is electrically connected to the height adjustment mechanism of the second welding station (12), the second pressure member, and the second side pressure member. The controller (7) can obtain the welding stress value at the second welding gap through the stress detection member, and can adjust the welding stress value at the second welding gap by adjusting at least one of the height of the second welding station (12) and the pressure of the second pressure member, so that the welding stress value of the second welding gap is kept within the stress threshold.

3. The welding auxiliary tooling with stress compensation function according to claim 2, characterized in that, The first welding station (11) is provided with a first height detection element (111), and the second welding station (12) is provided with a second height detection element (121). Both the first height detection element (111) and the second height detection element (121) are electrically connected to the controller (7). The first height detection element (111) is used to detect the height of the first welding station (11), and the second height detection element (121) is used to detect the height of the second welding station (12).

4. The welding auxiliary tooling with stress compensation function according to claim 2, characterized in that, Also includes: The first pressure detection element (81) is used to detect the downward pressure of the first pressing element; The second pressure detection element (82) is used to detect the side pressure of the first side pressure element; The third pressure detection element (83) is used to detect the downward pressure of the second downward pressure element; The fourth pressure detection element (84) is used to detect the side pressure of the second side pressure element.

5. The welding auxiliary tooling with stress compensation function according to claim 2, characterized in that, The first welding station (11) is provided with a first positioning groove and a first clearance groove (112). The first positioning groove is opened at the support end of the first welding station (11), and the first clearance groove (112) is opened at the bottom of the first positioning groove. The first positioning groove is used to position and support the two first workpieces (100), and the first clearance groove (112) is used for the welding gun to pass through. The second welding station (12) is provided with a second positioning groove and a second clearance groove (122). The second positioning groove is opened at the support end of the second welding station (12), and the second clearance groove (122) is opened at the bottom of the second positioning groove. The second positioning groove is used to position and support the first workpiece (100) and the second workpiece (200), and the second clearance groove (122) is used for the welding gun to pass through.

6. The welding auxiliary tooling with stress compensation function according to claim 2, characterized in that, The first pressing component includes a first telescopic component (31) and a first pressure roller (32). The fixed end of the first telescopic component (31) is fixed to the top frame (2). The first pressure roller (32) is rotatably disposed at the telescopic end of the first telescopic component (31). The first pressure roller (32) is used to press the first workpiece (100). The first side pressing member includes a second telescopic member (41) and a first pressure plate (42). The fixed end of the second telescopic member (41) is fixed to the base frame (1). The first pressure plate (42) is located at the telescopic end of the second telescopic member (41). The first pressure plate (42) is used to press the first workpiece (100). The second pressing component includes a third telescopic component (51) and a second pressure roller (52). The fixed end of the third telescopic component (51) is fixed to the top frame (2). The second pressure roller (52) is rotatably disposed at the telescopic end of the third telescopic component (51). The second pressure roller (52) is used to press the first workpiece (100) and the second workpiece (200). The second side pressure member includes a fourth telescopic member (61) and a second pressure plate (62). The fixed end of the fourth telescopic member (61) is fixed to the second welding station (12). The second pressure plate (62) is located at the telescopic end of the fourth telescopic member (61) and is used to press the second workpiece (200).

7. The welding auxiliary tooling with stress compensation function according to claim 6, characterized in that, The first welding station (11) is provided with a first guide rod (113) extending in a first direction, and the base frame (1) is provided with a first sliding hole, and the first guide rod (113) is slidably connected to the first sliding hole; The second welding station (12) is provided with a second guide rod (123) extending in the first direction, and the base frame (1) is provided with a second sliding hole, and the second guide rod (123) is slidably connected to the second sliding hole; The first pressure plate (42) is provided with a third guide rod (43) extending in the second direction, and the base frame (1) is provided with a third sliding hole, and the third guide rod (43) is slidably connected to the third sliding hole; The telescopic end of the first telescopic member (31) is provided with a first movable plate (33), the first pressure roller (32) is rotatably mounted on the first movable plate (33), the first movable plate (33) extends along the first direction and is provided with a fourth guide rod (34), the top frame (2) is provided with a fourth sliding hole, and the fourth guide rod (34) is slidably connected to the fourth sliding hole; The telescopic end of the third telescopic member (51) is provided with a second movable plate (53), the second pressure roller (52) is rotatably mounted on the second movable plate (53), the second movable plate (53) extends along the first direction and is provided with a fifth guide rod (54), the top frame (2) is provided with a fifth sliding hole, and the fifth guide rod (54) is slidably connected to the fifth sliding hole.

8. The welding auxiliary tooling with stress compensation function according to claim 6, characterized in that, The first pressure plate (42) has a first groove (421) and the side end of the first workpiece (100) along the second direction can be inserted into the first groove (421); The second pressure plate (62) has a second groove (621) and the side end of the second workpiece (200) along the second direction can be inserted into the second groove (621).

9. The welding auxiliary tooling with stress compensation function according to claim 6, characterized in that, The first telescopic member (31), the second telescopic member (41), the third telescopic member (51), and the fourth telescopic member (61) are all configured as hydraulic telescopic rods.

10. The welding auxiliary tooling with stress compensation function according to claim 2, characterized in that, The height adjustment mechanism of the first welding station (11) includes a first height adjustment component (13), the first welding station (11) is disposed on the first height adjustment component (13), and the height of the first welding station (11) is adjusted by the first height adjustment component (13); The height adjustment mechanism of the second welding station (12) includes a second height adjustment component (14), the second welding station (12) is disposed on the second height adjustment component (14), and the height of the second welding station (12) is adjusted by the second height adjustment component (14).

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