Cylinder box body component welding and correcting method

Abstract

The invention discloses a welding shape correction method for a cylinder box body component. The welding shape correction method comprises the following steps that the deformation condition and the deformation size of a cylinder box body component body are measured; shape correction parameters, a welding mode and a welding position are determined; the cylinder box body component main body is installed on a workbench, and the deformation part of the cylinder box body component main body is subjected to reversible deformation correction through a reversible deformation device; welding correction is conducted, and vibration aging is conducted after cooling; and the reversible deformation device is dismounted, the size of the cylinder box body component body is measured, and welding correction is completed after the measured size is qualified. The welding shape correction method effectively solves the problem of scrapping caused by the fact that deformation exceeds the tolerance range in the manufacturing process of the aluminum alloy large cylinder / box component, and compared with an existing pure mechanical manual shape correction process method, the welding shape correction method has the advantages of being high in efficiency, good in shape correction effect, controllable in quality and the like; by means of the sizing process method, the precision requirement of the aluminum alloy large cylinder / box component can be met.

Description

Technical Field

[0001] The invention belongs to the technical field of barrel box component shape correction, and in particular relates to a barrel box component welding shape correction method. Background Art

[0002] Aluminum alloy has the advantages of high specific strength, corrosion resistance, good electrical and thermal conductivity, etc. Its large cylinder / box components are widely used in aerospace, ground defense equipment, high-voltage power transmission and transformation and other manufacturing fields. However, most parts are thin-walled structures with large aspect ratios and poor rigidity. In the manufacturing process, especially after bending, welding and other processes, or even during transportation and storage, due to structural limitations or economic considerations, it is impossible or impossible to timely heat treat and release internal stress, which will lead to the breakdown of internal stress balance, severe deformation of parts, and even exceeding the tolerance range, resulting in the scrapping of parts.

[0003] In the existing technology, the overall shape correction technology of aluminum alloy cylinders / boxes mostly adopts mechanical manual shape correction, which requires the use of hydraulic / mechanical push rods to correct the deformation direction. Areas with small deformation are mostly corrected by manual hammering and hitting. This correction method is inefficient, has poor shape correction effect, and uncontrollable quality.

[0004] The patent document with the announcement number CN101709357A discloses a thin-walled cylinder tempering and shaping device, which is mainly used for tempering and shaping of metal thin-walled cylinders after heat treatment and quenching. Through the cooperation of the three-petal tapered movable expansion block and the cone, the movable expansion block expands the thin-walled cylinder under the action of the axial movement of the screw, and the thin-walled cylinder after quenching is shaped and tempered simultaneously, which can effectively eliminate the quenching deformation of the thin-walled cylinder. The device is mainly used for heat treatment and shaping of thin-walled cylinders, and plays a supporting role by being set in the thin-walled cylinder, but cannot be used for welding shaping of thin-walled cylinder welding.

[0005] Patent document with announcement number CN207463861U discloses a thin plate welding deformation correction tool, which uses a correction platform, correction parts and pressure rods to correct the deformed workpiece after welding. However, the tool corrects the workpiece by pressing down, which is not suitable for the overall correction of aluminum alloy cylinders / boxes. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a welding shape correction method for a barrel box component.

[0007] The present invention is achieved through the following technical solutions.

[0008] The present invention provides a welding shape correction method for a barrel box component, wherein the barrel box component comprises a barrel box component body, a welding process part and a reinforcing rib, wherein the welding process part is arranged on the barrel box component body, and the reinforcing rib is arranged around the barrel box component body, and the welding shape correction method comprises the following steps:

[0009] 1): Measure the data of the main body of the barrel box component, and measure the deformation and specific size of the main body of the barrel box component;

[0010] 2): Determine the calibration parameters, welding method and welding position;

[0011] 3): Install the main body of the barrel box component on the workbench, and use the anti-deformation device to correct the deformed part of the main body of the barrel box component;

[0012] 4): Perform welding correction and vibration aging after cooling;

[0013] 5): Remove the anti-deformation device and measure the dimensions of the main body of the barrel box component. After the measured dimensions are qualified, complete the welding correction.

[0014] Preferably, the workbench includes a base and a fixed plate, the top of the base is connected to the fixed plate, and a slide groove is arranged on the top of the base.

[0015] Preferably, the anti-deformation device includes a pressure plate, a support rod, a screw and a nut, the pressure plate is connected to one end of the support rod and the screw respectively, the other ends of the support rod and the screw are connected to the workbench, and one end of the screw is connected to the nut.

[0016] Preferably, a slot is provided on the pressure plate, one end of the screw rod passes through the slot and then is threadedly connected with the nut, and a fixing block is respectively provided at one end of the support rod and the screw rod, and the cross-section of the fixing block is T-shaped.

[0017] Preferably, the workbench contacts the bottom of the barrel box body component body through a gasket of equal height, and the anti-deformation device contacts the top of the barrel box body component body through the gasket.

[0018] Preferably, in the welding shape correction of step 4), spot welding reinforcement treatment can be performed on the weld between the reinforcing rib and the main body of the barrel box component.

[0019] Preferably, in step 5), if the welding shape correction is qualified, the welding process parts can be polished or cut and removed; if it is unqualified, the shape correction parameters and welding parameters are modified and the welding shape correction is performed again.

[0020] Preferably, the reinforcing rib is connected to the barrel box component body by fillet spot welding.

[0021] The beneficial effects of the present invention are:

[0022] The welding correction method of the present invention effectively solves the problem of scrapping caused by deformation beyond the tolerance range during the manufacturing process of large aluminum alloy cylinder / box components. Compared with the existing purely mechanical manual correction process method, it has the advantages of high efficiency, good correction effect, and controllable quality. Through this correction process method, the precision requirements of large aluminum alloy cylinder / box components can be met. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the anti-deformation device of the present invention;

[0025] In the figure: 1-workbench, 2-barrel box component body, 3-equal height gasket, 4-welding process part, 5-reinforcement rib, 6-gasket, 7-anti-deformation device, 11-base, 12-fixed plate, 13-slide groove, 701-pressing plate, 702-support rod, 703-screw, 704-nut, 705-slot, 706-fixed block. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0027] like Figure 1 , 2 As shown, a welding shape correction method for a barrel box component, the barrel box component includes a barrel box component body 2, a welding process part 4 and a reinforcing rib 5, the welding process part 4 is arranged on the barrel box component body 2, and the reinforcing rib 5 is arranged around the barrel box component body 2, and the welding shape correction method includes the following steps:

[0028] 1): Measure the data of the barrel box component main body 2, and measure the deformation and specific size of the barrel box component main body 2;

[0029] 2): Determine the calibration parameters such as verticality, parallelism and other directional shape tolerances, welding methods and welding positions;

[0030] 3): Install the barrel box component body 2 on the workbench 1, and use the anti-deformation device 7 to correct the deformed part of the barrel box component body 2;

[0031] 4): Perform welding correction and vibration aging after cooling to relieve stress concentration and achieve stress balance. Vibration aging is a process of tapping the welds between the main bodies of the barrel box components 2, the welds between the main body of the barrel box component 2 and the reinforcement 5, and the welds between the main body of the barrel box component 2 and the connection process parts 4;

[0032] 5): Remove the anti-deformation device 7 and measure the size of the barrel box component main body 2. After the measured size is qualified, complete the welding correction.

[0033] The welding process parts 4 can be arranged in the area where the barrel box body component main body 2 is severely deformed and has no requirements on the surface quality. They are usually cut or polished after welding and can be retained if they have no effect on the subsequent use of the barrel box body component main body 2.

[0034] The workbench 1 includes a base 11 and a fixing plate 12. The top of the base 11 is connected to the fixing plate 12. A slide groove 13 is arranged on the top of the base 11. The base 11 is placed on the ground, and the main body 2 of the cylinder box member to be calibrated is anti-deformed and fixed according to the measurement data and then installed on the fixing plate 12.

[0035] The anti-deformation device 7 includes a pressing plate 701, a support rod 702, a screw rod 703 and a nut 704. The pressing plate 701 is connected to one end of the support rod 702 and the screw rod 703 respectively. The other ends of the support rod 702 and the screw rod 703 are connected to the workbench 1. One end of the screw rod 703 is connected to the nut 704.

[0036] The pressing plate 701 is provided with a slot 705, and one end of the screw rod 703 passes through the pressing plate 701 through the slot 705 and is threadedly connected with the nut 704. One end of the support rod 702 and the screw rod 703 are respectively provided with a fixing block 706, and the cross section of the fixing block 706 is T-shaped. The fixing block 706 on the support rod 702 is connected to the fixing plate 12, and the fixing block 706 on the screw rod 703 is placed in the slide groove 13 for sliding connection. The fixing plate 12 blocks a part of the opening of the slide groove 13 to prevent the fixing block 706 on the support rod 702 from falling out of the slide groove 13.

[0037] By setting multiple sets of anti-deformation devices 7, different positions of the barrel box component body 2 are fixed. When in use, the screw rod 703 slides along the slide groove 13 to a suitable position, and then the pressing plate 701 contacts the top of the barrel box component body 2 through the gasket 6, and the barrel box component body 2 is fixed by tightening the nut 704 on the screw rod 703.

[0038] The workbench 1 contacts the bottom of the barrel box component body 2 through the shim 3, and the anti-deformation device 7 contacts the top of the barrel box component body 2 through the shim 6. The shim 3 is used to determine the horizontal reference of the barrel box component body 2. The part above the reference needs to be corrected by anti-deformation mechanical correction to correct the directional shape and position tolerances of the barrel box component body 2, such as verticality and parallelism.

[0039] In the welding shape correction of step 4), TIG spot welding reinforcement treatment can be performed on the weld between the reinforcing rib 5 and the barrel box component main body 2.

[0040] If the welding shape correction is qualified in the step 5), the welding process part 4 can be polished or cut and removed. If it is unqualified, the shape correction parameters and welding parameters are modified and the welding shape correction is performed again.

[0041] Embodiment 1:

[0042] The main body 2 of the barrel box component is 4500mm long, with a cross-sectional size of 250mm×250mm and a rectangular box shape. The box is required to have a straightness of ≤2mm over the entire length;

[0043] If the box is severely deformed and the deformation size is ﹢3mm≤straightness≤﹢5mm (with the deformation direction as ﹢), the existing mechanical radial correction technology is used to adjust the straightness to -2mm≤

[0044] -1mm, and then use TIG welding to intermittently weld around the process parts;

[0045] If the box body is slightly deformed and the deformation size is +2mm<straightness<3mm, the existing mechanical radial correction technology is used to -1mm≤straightness≤+1mm, and then TIG spot welding with a welding current of 190A is performed on the weld between the reinforcing rib 5 of the original component and the main body 2 of the barrel box component to strengthen it.

[0046] The reinforcing ribs 5 are connected to the barrel box component body 2 by fillet spot welding, which can improve the welding connection efficiency.

Claims

1. A method for welding and correcting the shape of a barrel box component, characterized in that: The barrel box component comprises a barrel box component body (2), a welding process part (4) and a reinforcing rib (5), wherein the welding process part (4) is arranged on the barrel box component body (2), and the reinforcing rib (5) is arranged around the barrel box component body (2); The welding shape correction method includes the following steps: 1): Performing data measurement on the barrel box component main body (2), measuring the deformation condition and specific deformation size of the barrel box component main body (2); 2): Determine the calibration parameters, welding method and welding position; 3): The barrel box component body (2) is mounted on the workbench (1), and the deformed part of the barrel box component body (2) is corrected by the anti-deformation device (7); 4): Perform welding correction and vibration aging after cooling; 5): Remove the anti-deformation device (7) and measure the size of the barrel box component body (2). After the measured size is qualified, complete the welding correction.

2. A welding shape correction method for a barrel box member as claimed in claim 1, characterized in that: The workbench (1) comprises a base (11) and a fixed plate (12); the top of the base (11) is connected to the fixed plate (12); and a slide groove (13) is arranged on the top of the base (11).

3. A welding shape correction method for a barrel box member as claimed in claim 1, characterized in that: The anti-deformation device (7) comprises a pressing plate (701), a support rod (702), a screw rod (703) and a nut (704); the pressing plate (701) is connected to one end of the support rod (702) and the screw rod (703) respectively; the other ends of the support rod (702) and the screw rod (703) are connected to the workbench (1); and one end of the screw rod (703) is connected to the nut (704).

4. A welding shape correction method for a barrel box member as claimed in claim 3, characterized in that: The pressing plate (701) is provided with a slot (705), one end of the screw rod (703) passes through the pressing plate (701) through the slot (705) and is threadedly connected with the nut (704), and one end of the support rod (702) and the screw rod (703) are respectively provided with a fixing block (706), and the cross section of the fixing block (706) is T-shaped.

5. A welding shape correction method for a barrel box member as claimed in claim 1, characterized in that: The workbench (1) contacts the bottom of the barrel box body component main body (2) through a gasket (3) of equal height, and the anti-deformation device (7) contacts the top of the barrel box body component main body (2) through a gasket (6).

6. A welding shape correction method for a barrel box member as claimed in claim 1, characterized in that: In the welding shape correction of step 4), spot welding reinforcement treatment can be performed on the weld between the reinforcing rib (5) and the main body (2) of the barrel box component.

7. A welding shape correction method for a barrel box member as claimed in claim 1, characterized in that: If the welding shape correction is qualified in the step 5), the welding process part (4) can be polished or cut and removed. If it is unqualified, the shape correction parameters and welding parameters are modified and the welding shape correction is performed again.

8. A welding shape correction method for a barrel box member as claimed in claim 1, characterized in that: The reinforcing rib (5) is connected to the barrel box component body (2) by fillet spot welding.

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