CN108746976B - Anti-magnetic interference device for electron beam welding - Google Patents
Anti-magnetic interference device for electron beam welding Download PDFInfo
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- CN108746976B CN108746976B CN201810913520.XA CN201810913520A CN108746976B CN 108746976 B CN108746976 B CN 108746976B CN 201810913520 A CN201810913520 A CN 201810913520A CN 108746976 B CN108746976 B CN 108746976B
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- silicon steel
- layer silicon
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- ejector rod
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- 238000003466 welding Methods 0.000 title claims abstract description 35
- 238000010894 electron beam technology Methods 0.000 title claims abstract description 33
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 75
- 239000010410 layer Substances 0.000 claims abstract description 72
- 230000005291 magnetic effect Effects 0.000 claims abstract description 36
- 230000007613 environmental effect Effects 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 239000002356 single layer Substances 0.000 claims abstract description 8
- 238000003754 machining Methods 0.000 claims abstract description 4
- 230000005292 diamagnetic effect Effects 0.000 claims abstract description 3
- 230000000694 effects Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K15/00—Electron-beam welding or cutting
- B23K15/0046—Welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K15/00—Electron-beam welding or cutting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Welding Or Cutting Using Electron Beams (AREA)
Abstract
The invention belongs to the field of welding, and particularly relates to a diamagnetic interference device for welding a plurality of electron beams of one gun, which comprises a detection part, a shielding part and a control part, wherein the structure of a shielding cover can be adjusted according to the complexity of electron beam machining and the strength of an environmental magnetic field, and an electric ejector rod is controlled to stretch so as to enable inner and outer layers of silicon steel sheets to be nested and combined into a single-layer structure or a multi-layer structure, so that different shielding requirements are realized, the stable track during electron beam machining is ensured, and the welding precision is high.
Description
Technical Field
The invention belongs to the field of welding, and particularly relates to a diamagnetic interference device for electron beam welding.
Background
The one-gun multi-beam electron beam welding technology is to make electron beams move rapidly at different positions through the control of a magnetic field, and the moving frequency is high to generate a multi-beam effect, so that materials or structures are processed and processed. The vacuum electron beam welding has strict requirements on magnetic fields, and the motion charges are interfered by an environmental magnetic field or a workpiece magnetic field to generate track deflection. Patent CN105228433A of west ann aviation power limited provides a magnetic field shielding method, but the method is only suitable for single beam electron beam processing.
Disclosure of Invention
The invention provides a magnetic interference shielding device for welding electron beams of one gun and multiple beams, which can reduce or eliminate the influence of an environmental magnetic field on the electron beams, stabilize the electron beam track and have high welding precision.
The device comprises a detection part, a shielding cover body and a control part, wherein the control part controls and adjusts the structure of the shielding cover body according to the intensity of an environmental magnetic field acquired by the detection part and the complexity of welding processing;
the detection section includes:
the magnetic field detector is arranged on the shell of the electron beam welding machine and used for detecting the intensity of an environmental magnetic field;
the data acquisition unit is in communication connection with a control system of the electron beam welding machine and is used for acquiring the number of lines of the numerical control program of the current welding processing;
the shield cover body includes:
the first inner layer silicon steel sheet and the second inner layer silicon steel sheet are of solid structures;
the outer-layer silicon steel sheet is of a hollow structure with a sliding groove;
one end of the electric ejector rod is connected with the motor, and the other end of the electric ejector rod is connected with the outer layer silicon steel sheet;
the motor is arranged on the inner wall of the electron beam welding machine and used for driving the electric ejector rod to extend or shorten;
the inner layer silicon steel sheet and the outer layer silicon steel sheet are sleeved together to form a cylindrical magnetic shielding cover together; when the electric ejector rod extends to push the first outer layer silicon steel sheet and the second outer layer silicon steel sheet to polymerize towards the inside, the first inner layer silicon steel sheet and the second inner layer silicon steel sheet are inserted into the first outer layer silicon steel sheet and the second outer layer silicon steel sheet along the sliding groove of the outer layer silicon steel sheet, so that a double-layer cylindrical shielding structure is formed; when the electric ejector rod is shortened to pull the first outer layer silicon steel sheet and the first outer layer silicon steel sheet, the two outer layer silicon steel sheets are far away from each other, and therefore the adjacent outer layer silicon steel sheets and the adjacent inner layer silicon steel sheets are nested in pairs to form a single-layer cylindrical shielding structure with a larger diameter;
the control section is configured to:
(1) when the magnetic field detector detects that the intensity of the environmental magnetic field is greater than or equal to a first intensity value, the motor is controlled to drive the electric ejector rod to extend, the first outer layer silicon steel sheet and the second outer layer silicon steel sheet are pushed, and a double-layer cylindrical shielding structure is formed to improve the magnetic shielding performance;
(2) when the magnetic field detector detects that the intensity of the environmental magnetic field is smaller than a first intensity value, further judgment is carried out according to the number of rows of the numerical control program of the current welding processing, which is acquired by the data acquisition unit;
(3) when the number of rows is larger than or equal to the numerical value of the first row, the path of electron beam processing is complex, so that a larger processing space is needed, and at the moment, the control motor drives the electric ejector rod to shorten, and pulls the first and second outer-layer silicon steel sheets to form a single-layer cylindrical shielding structure so as to obtain a larger processing space;
when the number of lines is smaller than the first line value, the electron beam machining path is simple, and in order to ensure the magnetic shielding effect, the motor is controlled to drive the electric ejector rod to extend, so that the first outer layer silicon steel sheet and the second outer layer silicon steel sheet are pushed, and a double-layer cylindrical shielding structure is formed.
The invention has the beneficial effects that: the invention can control the shielding part to adjust the structure of the shielding device according to different conditions, so that the electron beam track is stable and the welding precision is high.
Drawings
FIG. 1 shows a single layer structure of a shield can;
FIG. 2 shows a double layer structure of a shield can;
FIG. 3 shows a block diagram of an electron beam welder;
fig. 4 shows a control flow chart.
Detailed Description
The structure of the present system and the functions performed are described in detail below with reference to the accompanying drawings.
The anti-magnetic interference device for welding the electron beams of one gun and multiple beams comprises a detection part, a shielding part and a control part, wherein the control part controls and adjusts the structure of the shielding part according to the intensity of an environmental magnetic field acquired by the detection part and the complexity of welding processing; wherein,
the detection section includes:
the magnetic field detector 11 is arranged on the shell of the electron beam welding machine 4 and used for detecting the intensity of the environmental magnetic field;
the data acquisition unit is in communication connection with the control system of the electron beam welding machine 4 and is used for acquiring the number of lines of the numerical control program of the current welding processing;
the shielding part includes:
a cover 21, comprising:
the first inner layer silicon steel sheet 211 and the second inner layer silicon steel sheet 212 are solid structures;
the first outer layer silicon steel sheet 213 and the second outer layer silicon steel sheet 214 are hollow structures with sliding grooves;
the inner layer silicon steel sheet and the outer layer silicon steel sheet are sleeved together two by two to form a cylindrical magnetic shielding cover together; the outer silicon steel sheet is respectively connected with the electric push rods 221 and 222, and the first outer silicon steel sheet 213 and the second outer silicon steel sheet 214 are pushed to polymerize inwards by the extension of the electric push rods 22, so that the first and second inner silicon steel sheets 231 and 232 are inserted into the first and second outer silicon steel sheets 233 and 234 along the sliding grooves of the outer silicon steel sheets to form a double-layer cylindrical shielding case structure; the first and second outer-layer silicon steel sheets 233 and 234 are pulled by retracting the electric ejector rod 22, so that the two outer-layer silicon steel sheets are separated to pull the first and second inner-layer silicon steel sheets 231 and 232 to extend, and the adjacent outer-layer silicon steel sheets and the inner-layer silicon steel sheets are nested in pairs to form a single-layer cylindrical shielding case with a large space;
one end of the electric ejector rod 22 is connected with the motor 23, and the other end of the electric ejector rod is connected with the cover body 21 and used for changing the telescopic state of the electric ejector rod into the reduction or expansion of the shielding cover;
the motor 23 is arranged on the inner wall of the electron beam welding machine 4 and used for driving the electric ejector rod 22;
the control section is configured to:
(1) when the magnetic field detector 11 detects that the intensity of the environmental magnetic field is greater than or equal to the first intensity value, the control motor 23 drives the electric ejector rod 22 to extend out to push the first and second outer silicon steel sheets 213 and 214, so that the first and second inner silicon steel sheets 211 and 212 are inserted into the first and second outer silicon steel sheets 213 and 214, two ends of the outer silicon steel sheets are closed to form an outer cylindrical shielding case, and the inner silicon steel sheets are closed in the outer cylindrical shielding case to form an inner shielding case, thereby forming a double-layer cylindrical shielding case and improving the shielding performance;
(2) when the magnetic field detector 11 detects that the intensity of the environmental magnetic field is smaller than the first intensity value, further judgment is made according to the number of rows of the numerical control program of the current welding process, which is acquired by the data acquisition unit 12;
(3) when the number of lines of the numerical control program of the current welding processing of the electron beam welding machine 4 is larger than or equal to the first line numerical value, the path of the electron beam processing is complex, and a large space is needed for processing, at the moment, the control motor 23 drives the electric ejector rod 22 to retract, and pulls the first and second outer-layer silicon steel sheets 213 and 214, so that the first and second inner-layer silicon steel sheets 211 and 212 are extended, and the inner and outer-layer silicon steel sheets are nested into a single-layer cylindrical shielding case with a large space; when the number of rows of the numerical control program of current welding processing is less than the numerical value of the first row, it indicates that the path of electron beam processing is simple, and there is no requirement for the size of the processing space, and in order to ensure better shielding effect, the control motor 21 drives the electric ejector rod 22 to extend out at this moment, and pushes the first and second outer silicon steel sheets 213 and 214, so that the first and second inner silicon steel sheets 211 and 212 are inserted into the first and second outer silicon steel sheets 213 and 214, thereby forming a double-layer cylindrical shielding case.
It will be appreciated by persons skilled in the art that numerous variations and/or modifications may be made to the invention as shown in the specific embodiments without departing from the spirit or scope of the invention as broadly described. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. Likewise, the invention encompasses any combination of features, in particular of features in the patent claims, even if this feature or this combination of features is not explicitly specified in the patent claims or in the individual embodiments herein.
Claims (1)
1. A diamagnetic interference device for welding a plurality of electron beams of one gun comprises a detection part, a shielding cover body and a control part, wherein the control part controls and adjusts the structure of the shielding cover body according to the intensity of an environmental magnetic field acquired by the detection part and the complexity of welding processing; it is characterized in that the preparation method is characterized in that,
the detection section includes:
the magnetic field detector is arranged on the shell of the electron beam welding machine and used for detecting the intensity of an environmental magnetic field;
the data acquisition unit is in communication connection with a control system of the electron beam welding machine and is used for acquiring the number of lines of the numerical control program of the current welding processing;
the shield cover body includes:
the first inner layer silicon steel sheet and the second inner layer silicon steel sheet are of solid structures;
the outer-layer silicon steel sheet is of a hollow structure with a sliding groove;
one end of the electric ejector rod is connected with the motor, and the other end of the electric ejector rod is connected with the outer layer silicon steel sheet;
the motor is arranged on the inner wall of the electron beam welding machine and used for driving the electric ejector rod to extend or shorten;
the inner layer silicon steel sheet and the outer layer silicon steel sheet are sleeved together to form a cylindrical magnetic shielding cover together; when the electric ejector rod extends to push the first outer layer silicon steel sheet and the second outer layer silicon steel sheet to polymerize towards the inside, the first inner layer silicon steel sheet and the second inner layer silicon steel sheet are inserted into the first outer layer silicon steel sheet and the second outer layer silicon steel sheet along the sliding groove of the outer layer silicon steel sheet, so that a double-layer cylindrical shielding structure is formed; when the electric ejector rod is shortened to pull the first outer layer silicon steel sheet and the first outer layer silicon steel sheet, the two outer layer silicon steel sheets are far away from each other, and therefore the adjacent outer layer silicon steel sheets and the adjacent inner layer silicon steel sheets are nested in pairs to form a single-layer cylindrical shielding structure with a larger diameter;
the control section is configured to:
(1) when the magnetic field detector detects that the intensity of the environmental magnetic field is greater than or equal to a first intensity value, the motor is controlled to drive the electric ejector rod to extend, the first outer layer silicon steel sheet and the second outer layer silicon steel sheet are pushed, and a double-layer cylindrical shielding structure is formed to improve the magnetic shielding performance;
(2) when the magnetic field detector detects that the intensity of the environmental magnetic field is smaller than a first intensity value, further judgment is carried out according to the number of rows of the numerical control program of the current welding processing, which is acquired by the data acquisition unit;
(3) when the number of rows is larger than or equal to the numerical value of the first row, the path of electron beam processing is complex, so that a larger processing space is needed, and at the moment, the control motor drives the electric ejector rod to shorten, and pulls the first and second outer-layer silicon steel sheets to form a single-layer cylindrical shielding structure so as to obtain a larger processing space;
when the number of lines is smaller than the first line value, the electron beam machining path is simple, and in order to ensure the magnetic shielding effect, the motor is controlled to drive the electric ejector rod to extend, so that the first outer layer silicon steel sheet and the second outer layer silicon steel sheet are pushed, and a double-layer cylindrical shielding structure is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810913520.XA CN108746976B (en) | 2018-08-13 | 2018-08-13 | Anti-magnetic interference device for electron beam welding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810913520.XA CN108746976B (en) | 2018-08-13 | 2018-08-13 | Anti-magnetic interference device for electron beam welding |
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| Publication Number | Publication Date |
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| CN108746976A CN108746976A (en) | 2018-11-06 |
| CN108746976B true CN108746976B (en) | 2020-05-01 |
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| CN201810913520.XA Active CN108746976B (en) | 2018-08-13 | 2018-08-13 | Anti-magnetic interference device for electron beam welding |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112975098B (en) * | 2019-12-16 | 2022-09-23 | 桂林电子科技大学 | Method for improving welding deviation of electron beam welding |
| CN113539029A (en) * | 2021-08-25 | 2021-10-22 | 中国兵器工业第五九研究所 | Dynamic space magnetic field simulation system and method |
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| JP2013219103A (en) * | 2012-04-05 | 2013-10-24 | Seiko Epson Corp | Magnetic shield |
| CN203691859U (en) * | 2014-01-20 | 2014-07-02 | 中国船舶重工集团公司第七一六研究所 | Dual-layer shielding cover with electromagnetic shielding function |
| CN104049229A (en) * | 2014-05-28 | 2014-09-17 | 苏州中盛纳米科技有限公司 | Method for generating standard high frequency alternating magnetic field |
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| CN106291007A (en) * | 2015-06-02 | 2017-01-04 | 中国科学院物理研究所 | A kind of magnetic shielding device |
| CN106908051A (en) * | 2015-12-23 | 2017-06-30 | 北京自动化控制设备研究所 | A kind of high-precision optical fiber gyro bilayer magnetic shielding cover and its heat treatment method |
| CN108093613A (en) * | 2017-12-12 | 2018-05-29 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | The stretching structure and its installation method of a kind of electromagnetic shielding |
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2018
- 2018-08-13 CN CN201810913520.XA patent/CN108746976B/en active Active
Patent Citations (9)
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| CN202261884U (en) * | 2011-09-08 | 2012-05-30 | 衡阳华菱钢管有限公司 | Magnetic shielding apparatus for intermediate frequency induction heater |
| JP2013219103A (en) * | 2012-04-05 | 2013-10-24 | Seiko Epson Corp | Magnetic shield |
| CN203691859U (en) * | 2014-01-20 | 2014-07-02 | 中国船舶重工集团公司第七一六研究所 | Dual-layer shielding cover with electromagnetic shielding function |
| CN104049229A (en) * | 2014-05-28 | 2014-09-17 | 苏州中盛纳米科技有限公司 | Method for generating standard high frequency alternating magnetic field |
| CN105228433A (en) * | 2014-07-02 | 2016-01-06 | 西安航空动力股份有限公司 | A kind of method for vacuum electron beam welder magnetic field shielding |
| CN204347065U (en) * | 2015-01-30 | 2015-05-20 | 国家电网公司 | Metal zinc oxide lightning arrester all presses shield assembly |
| CN106291007A (en) * | 2015-06-02 | 2017-01-04 | 中国科学院物理研究所 | A kind of magnetic shielding device |
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| CN108746976A (en) | 2018-11-06 |
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Effective date of registration: 20200410 Address after: 325000 No. 3, 2 Zhongshan New Street, Yangyi Street, Lucheng District, Wenzhou City, Zhejiang Province Applicant after: Lin Chijie Address before: 230088 Kun Peng science and Technology Industrial Park, 539 Wangjiang West Road, Hefei High-tech Zone, Anhui Applicant before: HEFEI AIPAITE INTELECRUAL PROPERTY Co.,Ltd. |
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Effective date of registration: 20210119 Address after: 110000 Shenyang Economic and Technological Development Zone, Liaoning Province Patentee after: SHENYANG JINCHANG LANYU NEW MATERIAL Co.,Ltd. Address before: Room 3, building 2, Zhongshan new street, Yangyi street, Lucheng District, Wenzhou City, Zhejiang Province 325000 Patentee before: Lin Chijie |