Aluminum alloy thick plate rolled shell longitudinal weld tightening and positioning tooling

Abstract

The invention discloses a longitudinal weld tightening and positioning tool for a rolled aluminum alloy thick plate shell, which solves the problem that the longitudinal weld of the rolled aluminum alloy thick plate can meet the requirements of the vacuum electron beam welding machine for the weld gap. A 100 mm left straight edge (1) and a right straight edge (2) of the rolled aluminum alloy thick plate shell are respectively arranged on both sides of the longitudinal weld of the rolled aluminum alloy thick plate shell, a left stopper (4) is fixedly welded on the outer surface of the left straight edge (1) of the rolled aluminum alloy shell, a right stopper (5) is fixedly welded on the outer surface of the right straight edge (2) of the rolled aluminum alloy shell, a pair of tension bolts (6) are passed through between the left stopper (4) and the right stopper (5), a left U-shaped limit block (8) is fixedly welded on the inner surface of the left straight edge (1) of the rolled aluminum alloy shell, and a right U-shaped limit block (9) is fixedly welded on the inner surface of the right straight edge (2) of the rolled aluminum alloy shell, and the two limit blocks cooperate with a pad block (10) to achieve the misalignment adjustment of the weld in the thickness direction.

Description

Technical Field

[0001] The invention relates to a positioning tool and a positioning method for vacuum electron beam welding of the longitudinal weld seam of a shell formed by rolling an aluminum alloy thick plate, and is suitable for vacuum electron beam welding of the longitudinal seam of a shell formed by rolling an aluminum alloy thick plate with a thickness of 30 mm or more. Background Art

[0002] When using a vacuum electron beam welder for welding, the requirements for the weld gap are very high. Generally, the weld gap is required to be less than or equal to 0.25 mm. Before welding, the longitudinal weld gap needs to be shrunk to a state that meets the welding requirements. In addition to strict requirements for the assembly gap, this welding method also has strict requirements for the misalignment of the weld in the thickness direction and the misalignment of the weld in the length direction. For high-hardness aluminum alloy plates with high tensile strength and yield strength, especially aluminum alloy thick plates with a thickness of more than 30 mm, after the shell is rolled, the gap at the weld position and the amount of upper and lower misalignment are difficult to meet the requirements of the vacuum electron beam welder for the weld gap. How to design positioning tooling so that the longitudinal weld of the aluminum alloy thick plate of this material after rolling can meet the requirements of the vacuum electron beam welder for the weld gap has become a difficult problem that needs to be solved urgently on site. Summary of the invention

[0003] The invention provides a longitudinal weld tightening and positioning tool and positioning method for a rolled aluminum alloy thick plate shell, which solves the technical problem that the longitudinal weld of the rolled aluminum alloy thick plate can meet the requirements of the vacuum electron beam welding machine on the weld gap.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] A longitudinal weld tightening and positioning tool for an aluminum alloy thick plate rolled shell comprises a left straight edge and a right straight edge of the rolled shell, a left stopper is fixedly welded on the outer surface of the left straight edge of the rolled shell, and a right stopper is fixedly welded on the outer surface of the right straight edge of the rolled shell, a tensioning bolt is passed through the left stopper and the right stopper, and an adjusting and fastening nut is arranged at the tail end of the tensioning bolt; a left U-shaped limit block is fixedly welded on the inner surface of the left straight edge of the rolled shell, and a right U-shaped limit block is fixedly welded on the inner surface of the right straight edge of the rolled shell, a left limit block adjustment screw hole is arranged on the lower bottom surface of the left U-shaped limit block, and a right limit block adjustment screw hole is arranged on the lower bottom surface of the right U-shaped limit block, a pad block is arranged below the left straight edge of the rolled shell and below the right straight edge of the rolled shell, and a pad block is arranged on the upper top of the pad block. A weld pad groove is provided in the middle part of the surface, a left U-shaped limit block yield groove is provided on the upper top surface of the pad plate on the left side of the weld pad groove, and a right limit block yield groove is provided on the upper top surface of the pad plate on the right side of the weld pad groove, a left limit block adjusting bolt through hole is provided at the bottom of the groove of the left limit block yield groove, and a right limit block adjusting bolt through hole is provided at the bottom of the groove of the right U-shaped limit block yield groove, the left limit block adjusting bolt passes through the left limit block adjusting bolt through hole from bottom to top and then is screwed together with the left limit block adjusting screw hole, and the right limit block adjusting bolt passes through the right limit block adjusting bolt through hole from bottom to top and then is screwed together with the right limit block adjusting screw hole; the left U-shaped limit block is provided in the left U-shaped limit block yield groove, and the right U-shaped limit block is provided in the right U-shaped limit block yield groove.

[0006] A steel pad top connection threaded through hole is arranged at the bottom of the weld pad groove, a steel pad top connection bolt is screwed in the steel pad top connection threaded through hole, a steel pad is arranged in the weld pad groove, an aluminum pad is arranged on the steel pad, and a longitudinal weld gap of the aluminum alloy thick plate rolled shell is arranged above the aluminum pad; a left U-shaped limit block top connection bolt threaded through hole is arranged on the left pad block column of the left U-shaped limit block yielding groove, and the left U-shaped limit block top connection bolt is screwed in the left U-shaped limit block top connection bolt threaded through hole; a right U-shaped limit block top connection bolt threaded through hole is arranged on the right pad block column of the right U-shaped limit block yielding groove, and the right U-shaped limit block top connection bolt is screwed in the right U-shaped limit block top connection bolt threaded through hole.

[0007] A method for tightening and positioning a longitudinal weld of a rolled aluminum alloy thick plate shell comprises the following steps:

[0008] The first step is to set a 100 mm left straight edge and a right straight edge of the rolled aluminum alloy thick plate rolled shell on both sides of the longitudinal weld of the rolled aluminum alloy thick plate rolled shell, fix and weld a left stopper on the outer surface of the left straight edge of the rolled shell, and fix and weld a right stopper on the outer surface of the right straight edge of the rolled shell, pass a tensioning bolt between the left stopper and the right stopper, and set an adjustment and fastening nut at the tail end of the tensioning bolt; fix and weld a left U-shaped limit block on the inner surface of the left straight edge of the rolled shell, and fix and weld a right U-shaped limit block on the inner surface of the right straight edge of the rolled shell, a left limit block adjustment screw hole is set on the lower bottom surface of the left U-shaped limit block, and a right limit block adjustment screw hole is set on the lower bottom surface of the right U-shaped limit block, and a pad block is set under the left straight edge of the rolled shell and under the right straight edge of the rolled shell, and the pad block is set on the pad A weld pad groove is provided in the middle part of the upper top surface of the block, a left U-shaped limit block yield groove is provided on the upper top surface of the pad block on the left side of the weld pad groove, a right limit block yield groove is provided on the upper top surface of the pad block on the right side of the weld pad groove, a left limit block adjustment bolt through hole is provided at the bottom of the groove of the left limit block yield groove, a right limit block adjustment bolt through hole is provided at the bottom of the groove of the right U-shaped limit block yield groove, the left limit block adjustment bolt passes through the left limit block adjustment bolt through hole from bottom to top and then is screwed together with the left limit block adjustment screw hole, the right limit block adjustment bolt passes through the right limit block adjustment bolt through hole from bottom to top and then is screwed together with the right limit block adjustment screw hole; the left U-shaped limit block is provided in the left U-shaped limit block yield groove, and the right U-shaped limit block is provided in the right U-shaped limit block yield groove;

[0009] The second step is to set a steel pad top connection threaded through hole at the bottom of the groove of the weld pad groove, screw the steel pad top connection bolt in the steel pad top connection threaded through hole, set a steel pad in the weld pad groove, set an aluminum pad on the steel pad, and set a longitudinal weld gap of the aluminum alloy thick plate rolled shell above the aluminum pad; set a left U-shaped limit block top connection bolt threaded through hole on the left pad plate column of the left U-shaped limit block yielding groove, and the left U-shaped limit block top connection bolt is screwed in the left U-shaped limit block top connection bolt threaded through hole; set a right U-shaped limit block top connection bolt threaded through hole on the right pad plate column of the right U-shaped limit block yielding groove, and the right U-shaped limit block top connection bolt is screwed in the right U-shaped limit block top connection bolt threaded through hole;

[0010] The third step is to adjust the distance between the left stopper and the right stopper by rotating the adjustment nut, so that the longitudinal weld gap of the aluminum alloy thick plate rolled shell is less than or equal to 0.25 mm; by rotating the left limit block adjustment bolt and the right limit block adjustment bolt respectively, the left U-shaped limit block drives the left straight edge of the rolled shell to adjust up and down, and the right U-shaped limit block drives the right straight edge of the rolled shell to adjust up and down, so that the misalignment of the weld in the thickness direction is less than or equal to 0.25 mm;

[0011] Step 4: Rotate the top bolt of the left U-shaped limit block to make the right end of the top bolt of the left U-shaped limit block press against the left U-shaped limit block; rotate the top bolt of the right U-shaped limit block to make the left end of the top bolt of the right U-shaped limit block press against the right U-shaped limit block; rotate the top bolt of the steel plate to make the aluminum plate and the longitudinal weld gap of the aluminum alloy thick plate rolled shell press together;

[0012] The fifth step is to remove the tension bolts and use a vacuum electron beam welding machine to weld the longitudinal weld gap of the aluminum alloy thick plate rolled shell.

[0013] The tool positioning of the present invention enables the gap and misalignment of the longitudinal welding seam of the thick plate rolled shell to meet the basic requirements of vacuum electron beam welding; the gap tightening tool is assembled on the 100 mm straight edges on the two welding end faces after rolling, which ensures that the gap and misalignment of the butt weld are both within 0.25 mm without opening a groove, thereby realizing one-time electron beam welding of the butt longitudinal seam of the thick plate aluminum alloy after rolling, with high welding quality and beautiful weld appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention;

[0015] Figure 2 is a schematic structural diagram of the pad block 10 of the present invention;

[0016] Figure 3 It is a diagram of the matching relationship between the top bolt 15 of the left U-shaped limit block, the backing plate 10 and the left U-shaped limit block 8 of the present invention. DETAILED DESCRIPTION

[0017] The present invention is described in detail below in conjunction with the accompanying drawings:

[0018] A longitudinal weld tightening and positioning tool for an aluminum alloy thick plate rolled shell comprises a left straight edge 1 and a right straight edge 2 of the rolled shell, a left stopper 4 is fixedly welded on the outer surface of the left straight edge 1 of the rolled shell, and a right stopper 5 is fixedly welded on the outer surface of the right straight edge 2 of the rolled shell, a tensioning bolt 6 is passed through the left stopper 4 and the right stopper 5, and an adjustment and tightening nut 7 is arranged at the tail end of the tensioning bolt 6; a left U-shaped limit block 8 is fixedly welded on the inner surface of the left straight edge 1 of the rolled shell, and a right U-shaped limit block 9 is fixedly welded on the inner surface of the right straight edge 2 of the rolled shell, a left limit block adjustment screw hole 12 is arranged on the lower bottom surface of the left U-shaped limit block 8, and a right limit block adjustment screw hole 17 is arranged on the lower bottom surface of the right U-shaped limit block 9, a pad block 10 is arranged below the left straight edge 1 of the rolled shell and below the right straight edge 2 of the rolled shell, and a A weld pad groove 23, a left U-shaped limit block clearance groove 11 is arranged on the upper top surface of the pad block 10 on the left side of the weld pad groove 23, a right limit block clearance groove 16 is arranged on the upper top surface of the pad block 10 on the right side of the weld pad groove 23, a left limit block adjustment bolt through hole 26 is arranged at the bottom of the left limit block clearance groove 11, and a right limit block adjustment bolt through hole 27 is arranged at the bottom of the right U-shaped limit block clearance groove 16. The left limit block adjustment bolt 13 passes through the left limit block adjustment bolt through hole 26 from bottom to top and is screwed together with the left limit block adjustment screw hole 12, and the right limit block adjustment bolt 18 passes through the right limit block adjustment bolt through hole 27 from bottom to top and is screwed together with the right limit block adjustment screw hole 17; the left U-shaped limit block 8 is arranged in the left U-shaped limit block clearance groove 11, and the right U-shaped limit block 9 is arranged in the right U-shaped limit block clearance groove 16.

[0019] A steel plate top connection threaded through hole 21 is provided at the bottom of the weld pad groove 23, a steel plate top connection bolt 22 is screwed into the steel plate top connection threaded through hole 21, a steel plate 24 is provided in the weld pad groove 23, an aluminum plate 25 is provided on the steel plate 24, and a longitudinal weld gap 3 of the aluminum alloy thick plate rolled shell is provided above the aluminum plate 25; a left U-shaped limit block top connection bolt threaded through hole 14 is provided on the left pad block column of the left U-shaped limit block yielding groove 11, and the left U-shaped limit block top connection bolt 15 is screwed into the left U-shaped limit block top connection bolt threaded through hole 14; on the right pad block column of the right U-shaped limit block yielding groove 16 A right-side U-shaped limit block top bolt threaded through hole 19 is provided, and the right-side U-shaped limit block top bolt 20 is screwed in the right-side U-shaped limit block top bolt threaded through hole 19; a 100 mm left-side straight edge 1 and a right-side straight edge 2 of the rolled aluminum alloy thick plate rolled shell are respectively provided on both sides of the longitudinal weld of the rolled aluminum alloy thick plate rolled shell, and a single row of 9 left-side U-shaped limit blocks 8 are welded on the inner side surface of the left-side straight edge 1 of the rolled shell; a single row of 9 right-side U-shaped limit blocks 9 are welded on the inner side surface of the right-side straight edge 2 of the rolled shell; a single row of 5 left-side stoppers 4 are welded on the outer side surface of the left-side straight edge 1 of the rolled shell, and a single row of 5 right-side stoppers 5 are welded on the outer side surface of the right-side straight edge 2 of the rolled shell.

[0020] A method for tightening and positioning a longitudinal weld of a rolled aluminum alloy thick plate shell comprises the following steps:

[0021] The first step is to set a 100 mm left straight edge 1 and a right straight edge 2 of the rolled aluminum alloy thick plate rolled shell on both sides of the longitudinal weld of the rolled aluminum alloy thick plate rolled shell, fix and weld a left stopper 4 on the outer surface of the left straight edge 1 of the rolled shell, and fix and weld a right stopper 5 on the outer surface of the right straight edge 2 of the rolled shell, pass a tensioning bolt 6 between the left stopper 4 and the right stopper 5, and set an adjustment and fastening nut 7 at the tail end of the tensioning bolt 6; fix and weld a left U-shaped limit block 8 on the inner surface of the left straight edge 1 of the rolled shell, and fix and weld a right U-shaped limit block 9 on the inner surface of the right straight edge 2 of the rolled shell, a left limit block adjustment screw hole 12 is set on the lower bottom surface of the left U-shaped limit block 8, and a right limit block adjustment screw hole 17 is set on the lower bottom surface of the right U-shaped limit block 9, and a gasket block 10 is set below the left straight edge 1 of the rolled shell and below the right straight edge 2 of the rolled shell, and in the middle of the upper top surface of the gasket block 10 A weld pad groove 23 is provided, a left U-shaped limit block clearance groove 11 is provided on the upper top surface of the pad block 10 on the left side of the weld pad groove 23, a right limit block clearance groove 16 is provided on the upper top surface of the pad block 10 on the right side of the weld pad groove 23, a left limit block adjustment bolt through hole 26 is provided at the bottom of the left limit block clearance groove 11, and a right limit block adjustment bolt through hole 27 is provided at the bottom of the right U-shaped limit block clearance groove 16, the left limit block adjustment bolt 13 passes through the left limit block adjustment bolt through hole 26 from bottom to top and then is screwed together with the left limit block adjustment screw hole 12, the right limit block adjustment bolt 18 passes through the right limit block adjustment bolt through hole 27 from bottom to top and then is screwed together with the right limit block adjustment screw hole 17; the left U-shaped limit block 8 is provided in the left U-shaped limit block clearance groove 11, and the right U-shaped limit block 9 is provided in the right U-shaped limit block clearance groove 16;

[0022] The second step is to set a steel pad top connection threaded through hole 21 at the bottom of the weld pad groove 23, screw the steel pad top connection bolt 22 into the steel pad top connection threaded through hole 21, set a steel pad 24 in the weld pad groove 23, set an aluminum pad 25 on the steel pad 24, and set a longitudinal weld gap 3 of the aluminum alloy thick plate rolled shell above the aluminum pad 25; set a left U-shaped limit block top connection bolt threaded through hole 14 on the left pad block column of the left U-shaped limit block yielding groove 11, and the left U-shaped limit block top connection bolt 15 is screwed into the left U-shaped limit block top connection bolt threaded through hole 14; set a right U-shaped limit block top connection bolt threaded through hole 19 on the right pad block column of the right U-shaped limit block yielding groove 16, and the right U-shaped limit block top connection bolt 20 is screwed into the right U-shaped limit block top connection bolt threaded through hole 19;

[0023] Step 3: Adjust the distance between the left stopper 4 and the right stopper 5 by rotating the fastening nut 7, so that the longitudinal weld gap 3 of the aluminum alloy thick plate rolled shell is less than or equal to 0.25 mm; rotate the left limit block adjusting bolt 13 and the right limit block adjusting bolt 18 respectively, so that the left U-shaped limit block 8 drives the left straight edge 1 of the rolled shell to adjust up and down, and the right U-shaped limit block 9 drives the right straight edge 2 of the rolled shell to adjust up and down, so that the misalignment of the weld in the thickness direction is less than or equal to 0.25 mm;

[0024] Step 4: Rotate the top bolt 15 of the left U-shaped limit block to tighten the right end of the top bolt 15 of the left U-shaped limit block against the left U-shaped limit block 8; rotate the top bolt 20 of the right U-shaped limit block to tighten the left end of the top bolt 20 of the right U-shaped limit block against the right U-shaped limit block 9; rotate the top bolt 22 of the steel pad to connect the aluminum pad 25 with the longitudinal weld gap 3 of the aluminum alloy thick plate rolled shell;

[0025] Step 5: Remove the tension bolts 6 and use a vacuum electron beam welder to weld the longitudinal weld gap 3 of the aluminum alloy thick plate rolled shell.

Claims

1. A longitudinal weld tightening and positioning tool for a rolled aluminum alloy thick plate shell, comprising a left straight edge (1) of the rolled shell and a right straight edge (2) of the rolled shell, characterized in that: A left stopper (4) is fixedly welded on the outer surface of the left straight side (1) of the rolled shell, and a right stopper (5) is fixedly welded on the outer surface of the right straight side (2) of the rolled shell. A tension bolt (6) is passed between the left stopper (4) and the right stopper (5), and an adjustment fastening nut (7) is provided at the tail end of the tension bolt (6). A left U-shaped limit block (8) is fixedly welded on the inner surface of the left straight side (1) of the rolled shell, and a U-shaped limit block (8) is fixedly welded on the inner surface of the right straight side (2) of the rolled shell. A right U-shaped limit block (9) is fixedly welded on the upper surface, a left limit block adjustment screw hole (12) is arranged on the lower bottom surface of the left U-shaped limit block (8), a right limit block adjustment screw hole (17) is arranged on the lower bottom surface of the right U-shaped limit block (9), a pad block (10) is arranged below the left straight edge (1) of the rolled shell body and below the right straight edge (2) of the rolled shell body, a weld pad block groove (23) is arranged in the middle of the upper top surface of the pad block (10), and a left side of the weld pad block groove (23) is provided. A left U-shaped stop block clearance groove (11) is provided on the upper top surface of the backing plate (10) on the right side of the weld pad groove (23); a right U-shaped stop block clearance groove (16) is provided on the upper top surface of the backing plate (10) on the right side of the weld pad groove (23); a left stop block adjustment bolt through hole (26) is provided at the bottom of the left U-shaped stop block clearance groove (11); a right stop block adjustment bolt through hole (27) is provided at the bottom of the right U-shaped stop block clearance groove (16); and a left stop block adjustment bolt through hole (28) is provided at the bottom of the left U-shaped stop block clearance groove (16). The bolt (13) passes through the left limit block adjustment bolt through hole (26) from bottom to top and is then screwed together with the left limit block adjustment screw hole (12); the right limit block adjustment bolt (18) passes through the right limit block adjustment bolt through hole (27) from bottom to top and is then screwed together with the right limit block adjustment screw hole (17); the left U-shaped limit block (8) is arranged in the left U-shaped limit block clearance groove (11), and the right U-shaped limit block (9) is arranged in the right U-shaped limit block clearance groove (16).

2. The longitudinal weld tightening and positioning tool for rolling a thick aluminum alloy plate shell according to claim 1 is characterized in that: A steel plate top connection threaded through hole (21) is provided at the bottom of the weld pad groove (23), a steel plate top connection bolt (22) is screwed into the steel plate top connection threaded through hole (21), a steel plate (24) is provided in the weld pad groove (23), an aluminum plate (25) is provided on the steel plate (24), and a longitudinal weld gap (3) of the aluminum alloy thick plate rolled shell is provided above the aluminum plate (25); on the left side of the U-shaped limit block yielding groove (11), a steel plate (24) is provided on the weld pad groove (23); A left U-shaped limit block top bolt threaded through hole (14) is provided on the pad block column, and the left U-shaped limit block top bolt (15) is screwed into the left U-shaped limit block top bolt threaded through hole (14); a right U-shaped limit block top bolt threaded through hole (19) is provided on the right pad block column of the right U-shaped limit block yielding groove (16), and the right U-shaped limit block top bolt (20) is screwed into the right U-shaped limit block top bolt threaded through hole (19).

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