CN110936007A - Vacuum electron beam welding table - Google Patents

Vacuum electron beam welding table Download PDF

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Publication number
CN110936007A
CN110936007A CN201911333055.3A CN201911333055A CN110936007A CN 110936007 A CN110936007 A CN 110936007A CN 201911333055 A CN201911333055 A CN 201911333055A CN 110936007 A CN110936007 A CN 110936007A
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China
Prior art keywords
electron beam
beam welding
vacuum electron
weldment
push rod
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Application number
CN201911333055.3A
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Chinese (zh)
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CN110936007B (en
Inventor
陈云霞
芦凤桂
陈晨曦
冯菲玥
蒋春霞
邓文智
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Shanghai Dianji University
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Shanghai Dianji University
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Publication of CN110936007A publication Critical patent/CN110936007A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K15/00Electron-beam welding or cutting
    • B23K15/06Electron-beam welding or cutting within a vacuum chamber
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0461Welding tables

Abstract

The invention discloses a vacuum electron beam welding table, and belongs to the technical field of welding process equipment. The welding table comprises a pedestal, a vertical constraint device, a transverse constraint device and an anti-bending clamp; the pedestal is provided with weldment placing platforms which are arranged symmetrically left and right; the vertical restraint device comprises a rotary column, a sliding support and a pressure lever; the transverse restraint device comprises a push plate and two push rods; the anti-bending clamp comprises clamp bodies, coarse adjustment screws, coarse adjustment nuts, fine adjustment screws and gaskets, wherein the clamp bodies are L-shaped, the number of the clamp bodies is two, long edges of the L-shaped clamp bodies are mutually overlapped, coarse adjustment threaded holes are formed in the overlapped parts, fine adjustment threaded holes are formed in short edges of the L-shaped clamp bodies, and the gaskets are placed between the weldment and the weldment placing table. The welding table is particularly suitable for being used as a matching device for vacuum electron beam welding of high-strength steel and aluminum alloy.

Description

Vacuum electron beam welding table
Technical Field
The invention particularly relates to a vacuum electron beam welding table, and belongs to the technical field of welding process equipment. In particular to a vacuum electron beam welding table suitable for high-strength steel/aluminum alloy.
Background
In the vacuum electron beam welding, an electron beam in directional high-speed motion impacts a workpiece to convert kinetic energy into heat energy so as to melt the workpiece and form a welding seam.
With the continuous lightweight and high strength of ocean engineering equipment, dissimilar materials such as high-strength steel, aluminum alloy and the like are widely welded, but because the thermal property and the mechanical property of steel and aluminum are greatly different, a large amount of Fe-Al intermetallic compounds and large residual stress exist in a welding joint, and the longitudinal shrinkage of a welding seam caused by the thermal stress in the welding process is bent, so that a large amount of cracks are often generated, the strength of a component is seriously influenced, and the steel-aluminum welding becomes a great difficulty.
In the prior art, methods for solving welding deformation include deformation prevention and post-welding correction, and rigid fixation and mechanical correction are common methods. Compared with post-welding mechanical correction, the rigid fixing method is obviously more beneficial to improving the welding quality. At present, the fixing anti-deformation device of the existing welding table usually adopts a complex tire clamp or a temporary supporting method to realize the anti-deformation purpose. The welding device can not be used on a vacuum electron beam welding table, and can not solve the problem of large welding bending deformation of high-strength steel, aluminum alloy and other dissimilar materials.
For example, chinese patent application publication No. CN109128678, published 2019-01-04, discloses an anti-deformation welding platform, which has a complex anti-deformation structure and complicated assembly and disassembly, and has poor anti-deformation capability for steel and aluminum welding, and the structure thereof cannot be applied to a whole set of operating equipment for vacuum electron beam welding.
Disclosure of Invention
Therefore, the invention provides the vacuum electron beam welding table for restraining the weldment in a three-way restraining manner and preventing the weldment from being bent in the welding process, aiming at the defects that in the prior art, the high-strength steel and aluminum alloy vacuum electron beam welding process has cracks caused by bending and the strength of the component is influenced.
The specific technical scheme is as follows:
a vacuum electron beam welding table comprises a pedestal, a vertical restraint device, a transverse restraint device and an anti-bending clamp;
the pedestal is provided with weldment placing tables which are arranged in bilateral symmetry, and each weldment placing table is at least provided with a vertical constraint device and a horizontal constraint device;
the vertical restraint device comprises a rotary column, a sliding support and a pressure rod, the lower end of the rotary column is connected with the pedestal, the upper end of the rotary column is connected with the sliding support, and the pressure rod can move on the sliding support and provide vertical pressure;
the transverse restraint device comprises a push plate and two push rods, the two push rods are arranged on two sides of the push plate, and the push rods are arranged on the pedestal;
the anti-bending clamp comprises clamp bodies, coarse adjustment screws, coarse adjustment nuts, fine adjustment screws and gaskets, wherein the clamp bodies are L-shaped, the number of the clamp bodies is two, the long sides of the L-shaped long sides of the two clamp bodies are mutually overlapped, coarse adjustment threaded holes are formed in the overlapped parts and used for installing the coarse adjustment screws and the coarse adjustment nuts, the fine adjustment threaded holes are formed in the short sides of the L-shaped long sides of the two clamp bodies and used for installing the fine adjustment screws, and the gaskets are placed between the weldment and the weldment placing table.
Furthermore, the coarse adjustment threaded holes are arranged in more than two rows, each row is provided with two fine adjustment threaded holes, and each fixture body is provided with two fine adjustment threaded holes side by side.
Further, the lower end of the rotating column is arranged on the pedestal at a position which is located on the side face of the weldment placing table.
Furthermore, the sliding support is hinged with the upper end of the rotating column, and a sliding groove is formed in the sliding support.
Furthermore, the pressure lever is arranged in the sliding groove and fixed through an upper nut and a lower nut.
Further, the push rod is installed on the pedestal through setting up the push rod fixed block of placing the platform edge at the weldment, is equipped with the push rod clearing hole on the push rod fixed block, and the both ends of push rod are fixed through the push rod nut with push rod threaded connection.
Furthermore, the quantity of the gaskets is four, and the gaskets are arranged in a rectangular shape.
Further, vacuum electron beam welding platform still includes the shielding gas device, the shielding gas device includes the air gun, and the welding is placed and is equipped with the reservation hole in the platform, and the air gun is installed in the reservation hole.
Further, the air gun is installed in the reserved hole through a nut.
The invention has the beneficial effects that: compared with the prior art, the vacuum electron beam welding table provided by the invention has the advantages that three restraint devices, namely a vertical restraint device, a transverse restraint device and an anti-bending clamp, are designed by improving the structural design aiming at the characteristics of the vacuum electron beam welding table, and pressure is respectively applied in the vertical and horizontal directions in parallel and in the vertical welding line direction, so that the defects of cracks caused by bending deformation of a weldment in the high-strength steel and aluminum alloy vacuum electron beam welding process are prevented, and the strength of a member is improved. Compared with the rigid fixing device in the prior art, the device has stronger deformation prevention capability and simpler structure, and the fixing device is easy to install and disassemble, and is particularly suitable for being used as a matching device for vacuum electron beam welding of high-strength steel and aluminum alloy.
Drawings
FIGS. 1 and 2 are schematic views of the assembly of a vacuum electron beam welding station;
FIG. 2 is a schematic view showing a state of use of a welding fixture according to embodiment 2;
FIG. 3 is a schematic view of the structure of the stage;
FIG. 4 is a schematic view of a vertical restraint;
FIG. 5 is a schematic structural view of a sliding support;
FIG. 6 is a schematic structural view of the pressing rod;
FIG. 7 is a schematic view of a lateral restraint device;
FIG. 8 is a schematic structural view of an anti-buckling clamp;
FIG. 9 is a schematic structural view of the clamp body;
FIGS. 10 and 11 are schematic views of the anti-bending clamp clamping the weldment;
fig. 12 is a schematic view of the structure of the air gun.
The reference numbers are as follows:
1. the welding part placing device comprises a pedestal, 2, a vertical constraint device, 3, a transverse constraint device, 4, an anti-bending clamp, 5, an air gun, 6 and a welding part placing table, 7, a push rod fixing block, 8, a reserved hole, 9, a rotating column, 10, a sliding support, 11, a press rod, 12, a sliding groove, 13, a nut, 14, a push plate, 15, a push rod, 16, a clamp body, 17, a coarse adjustment screw, 18, a coarse adjustment nut, 19, a fine adjustment screw, 20, a gasket, 21, a coarse adjustment threaded hole, 22 and a fine adjustment threaded hole.
Detailed Description
The following description of the embodiments of the present invention is provided with reference to the accompanying drawings:
the invention is designed for solving the problem that the strength of a member is influenced by cracks caused by bending when dissimilar materials such as high-strength steel/aluminum alloy and the like are welded in the prior art.
The general assembly of the vacuum electron beam welding table is shown in fig. 1 and fig. 2, the design improvement of the invention mainly lies in the deformation prevention structure of the vacuum electron beam welding table, and the welding table and the deformation prevention structure can be embodied according to a specific electron beam welding process flow.
The vacuum electron beam welding station consists of five main parts: pedestal 1, vertical restraint device 2, horizontal restraint device 3, prevent curved anchor clamps 4 and protective gas device.
The function of the pedestal 1: providing a vertical restraint device 2, a transverse restraint device 3 and a protective gas device fixing position; providing a support surface for the vertical restraint 2; a molten pool vacuum medium rail is provided.
The vertical restraint device 2 functions: providing vertical restraint to prevent expansion of the weldment during welding;
the lateral restraint device 3 functions: providing transverse restraint to prevent the weldment from bending during the welding process;
the bending prevention clamp 4 has the functions: the device is matched with the transverse restraining device 3 for use, so that the weldment is prevented from being bent in the welding process;
the function of the protective gas device is as follows: the shielding gas is provided by an air gun 5.
The pedestal 1 is structurally shown in fig. 3, the pedestal 1 is provided with a weldment placing table 6 which is bilaterally symmetrical, a plurality of weldment placing positions are arranged on the weldment placing table 6 according to the whole process condition of vacuum electron beam welding, and each weldment at least corresponds to one vertical restraint device 2 and one transverse restraint device 3.
As shown in fig. 4, 5 and 6, the vertical restraint device 2 comprises a rotary column 9, a sliding support 10, a pressure lever 11 and a nut 13, wherein the sliding support 10 is provided with a sliding groove 12, and the sliding support 10 is hinged with the rotary column 9;
installation: the lower end of the rotary column 9 is connected with the pedestal 1, the upper end of the rotary column is hinged with a round hole on the sliding support 10, the pressing rod 11 is adjusted downwards by the nut 13 after the pressing rod 11 slides to a proper position on the sliding support 10, vertical pressure is applied to a weldment, and the contact surface of the pressing rod 11 and the weldment is kept right above the gasket 20.
As shown in fig. 7, the transverse restraint device 3 includes a push plate 14 and two push rods 15, a push rod fixing block 7 is disposed at an edge position of the weldment placing table 6, a push rod through hole is disposed in the middle of the push rod fixing block 7, one end of each push rod 15 is fixed at two ends of the push rod fixing block 7 by a push rod nut, and the other end of each push rod 15 is fixedly connected with the push plate 14.
Installation: screwing a push rod nut onto a push rod 15 for a certain distance, and inserting the push rod with the nut into a push rod through hole on a push rod fixing block 7 reserved on the pedestal 1; after the prepared weldment is padded with the gasket 20, the weldment is aligned and placed on the welding table top to prepare restraint; the push rod 15 is aligned with the edge of the weldment and the push rod nut is rotated in the opposite direction until the push rod 15 abuts the weldment.
The structure and the working principle of the anti-bending clamp 4 are shown in fig. 8 to 11, and the anti-bending clamp 4 comprises a left clamp body 16, a right clamp body 16, a coarse adjusting screw 17, a coarse adjusting nut 18, a fine adjusting screw 19, a gasket 20, a coarse adjusting threaded hole 21 and a fine adjusting threaded hole 22;
installation: the left and right clamp bodies 16 are butted by selecting proper coarse adjustment threaded holes 21, the length of the anti-bending clamp 4 is ensured to be larger than that of a weldment, and the anti-bending clamp is fixed by using coarse adjustment screws 17 and coarse adjustment nuts 18; the weldment is placed on the spacer 20 to ensure that the center of the fine adjustment threaded hole 22 is in contact with the side edge of the weldment, and then placed on the weldment placing table 7, and the anti-bending fixture 4 and the weldment are fixed by the fixed anti-bending fixture 4 and the fine adjustment screw 19.
Air gun 5 As shown in FIG. 12, air gun 5 is mounted by fixing air gun 5 in a prepared hole 8 of pedestal 1 with a nut.
After the installation of the whole welding table is completed, the vertical restraint device 2 provides vertical restraint force, the transverse restraint device 3 provides restraint vertical to a welding seam in the horizontal direction, the anti-bending clamp 4 provides restraint parallel to the welding seam in the horizontal direction, and under the combined action of three-dimensional restraint, the weldment keeps the original position in the welding process, the member is prevented from being bent to the maximum extent, the occurrence of residual stress and cracks is reduced, and the welding quality of steel and aluminum is improved.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (9)

1. A vacuum electron beam welding table comprises a pedestal and is characterized by further comprising a vertical restraining device, a transverse restraining device and an anti-bending clamp;
the pedestal is provided with weldment placing tables which are arranged in bilateral symmetry, and each weldment placing table is at least provided with a vertical constraint device and a horizontal constraint device;
the vertical restraint device comprises a rotary column, a sliding support and a pressure rod, the lower end of the rotary column is connected with the pedestal, the upper end of the rotary column is connected with the sliding support, and the pressure rod can move on the sliding support and provide vertical pressure;
the transverse restraint device comprises a push plate and two push rods, the two push rods are arranged on two sides of the push plate, and the push rods are arranged on the pedestal;
the anti-bending clamp comprises clamp bodies, coarse adjustment screws, coarse adjustment nuts, fine adjustment screws and gaskets, wherein the clamp bodies are L-shaped, the number of the clamp bodies is two, the long sides of the L-shaped long sides of the two clamp bodies are mutually overlapped, coarse adjustment threaded holes are formed in the overlapped parts and used for installing the coarse adjustment screws and the coarse adjustment nuts, the fine adjustment threaded holes are formed in the short sides of the L-shaped long sides of the two clamp bodies and used for installing the fine adjustment screws, and the gaskets are placed between the weldment and the weldment placing table.
2. The vacuum electron beam welding station of claim 1, wherein said coarse adjustment threaded holes are provided in more than two rows, two in each row, and two fine adjustment threaded holes are provided side-by-side in each fixture body.
3. The vacuum electron beam welding station of claim 1, wherein the lower end of said rotary column is mounted on the stand at a position on the side of the weldment placement station.
4. The vacuum electron beam welding station of claim 3, wherein the slide bracket is hinged to the upper end of the rotary column, and the slide bracket is provided with a slide groove.
5. The vacuum electron beam welding station of claim 4, wherein the press bar is installed in the slide groove, and the press bar is fixed by upper and lower nuts.
6. The vacuum electron beam welding station as claimed in claim 1, wherein the push rod is mounted on the stand by a push rod fixing block provided at an edge of the weldment placing station, the push rod fixing block being provided with push rod passing holes, both ends of the push rod being fixed by push rod nuts threadedly connected to the push rod.
7. The vacuum electron beam welding station of claim 1, wherein said spacers are four in number and are arranged in a rectangular configuration.
8. The vacuum electron beam welding station of claim 1, further comprising a shielding gas device comprising a gas gun, wherein the welding station is provided with a pre-formed hole, and the gas gun is mounted in the pre-formed hole.
9. The vacuum electron beam welding station of claim 8, wherein the air gun is mounted in the pre-made hole by a nut.
CN201911333055.3A 2019-12-23 2019-12-23 Vacuum electron beam welding table Active CN110936007B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911333055.3A CN110936007B (en) 2019-12-23 2019-12-23 Vacuum electron beam welding table

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911333055.3A CN110936007B (en) 2019-12-23 2019-12-23 Vacuum electron beam welding table

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CN110936007A true CN110936007A (en) 2020-03-31
CN110936007B CN110936007B (en) 2021-09-28

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102528347A (en) * 2012-01-12 2012-07-04 天津大学 Constraint radiating device for welding ferritic stainless steel plates and welding method
CN203779394U (en) * 2014-04-04 2014-08-20 凯迈(洛阳)置业包装有限公司 Box covering skin butt joint device
CN105215595A (en) * 2015-09-29 2016-01-06 宁波一舟精密机械制造有限公司 Machine room rack support member weld jig
CN105880908A (en) * 2016-06-01 2016-08-24 宜昌江峡船用机械有限责任公司 Device and method for controlling welding deformation of thin plate butt-joint
EP3093099A1 (en) * 2015-05-12 2016-11-16 Fives Oto S.P.A. A welding machine
CN106541238A (en) * 2016-11-08 2017-03-29 中国电子科技集团公司第四十八研究所 A kind of jig for welding photovoltaic apparatus multi-purpose wheelbarrow framework
JP2018140423A (en) * 2017-02-28 2018-09-13 矢作産業株式会社 Welding jig and welding jig unit
CN108972398A (en) * 2018-07-02 2018-12-11 滁州亿扬零部件制造有限公司 A kind of clamping device for auto parts and components

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102528347A (en) * 2012-01-12 2012-07-04 天津大学 Constraint radiating device for welding ferritic stainless steel plates and welding method
CN203779394U (en) * 2014-04-04 2014-08-20 凯迈(洛阳)置业包装有限公司 Box covering skin butt joint device
EP3093099A1 (en) * 2015-05-12 2016-11-16 Fives Oto S.P.A. A welding machine
CN105215595A (en) * 2015-09-29 2016-01-06 宁波一舟精密机械制造有限公司 Machine room rack support member weld jig
CN105880908A (en) * 2016-06-01 2016-08-24 宜昌江峡船用机械有限责任公司 Device and method for controlling welding deformation of thin plate butt-joint
CN106541238A (en) * 2016-11-08 2017-03-29 中国电子科技集团公司第四十八研究所 A kind of jig for welding photovoltaic apparatus multi-purpose wheelbarrow framework
JP2018140423A (en) * 2017-02-28 2018-09-13 矢作産業株式会社 Welding jig and welding jig unit
CN108972398A (en) * 2018-07-02 2018-12-11 滁州亿扬零部件制造有限公司 A kind of clamping device for auto parts and components

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