CN211804372U - Focusing current characteristic parameter collecting device of electron beam additive manufacturing equipment - Google Patents
Focusing current characteristic parameter collecting device of electron beam additive manufacturing equipment Download PDFInfo
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- CN211804372U CN211804372U CN202020165125.0U CN202020165125U CN211804372U CN 211804372 U CN211804372 U CN 211804372U CN 202020165125 U CN202020165125 U CN 202020165125U CN 211804372 U CN211804372 U CN 211804372U
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- horizontal shaft
- additive manufacturing
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- 238000010894 electron beam technology Methods 0.000 title claims abstract description 79
- 239000000654 additive Substances 0.000 title claims abstract description 43
- 230000000996 additive effect Effects 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 43
- 229910052751 metal Inorganic materials 0.000 claims abstract description 76
- 239000002184 metal Substances 0.000 claims abstract description 76
- 239000000463 material Substances 0.000 claims abstract description 41
- 238000004804 winding Methods 0.000 claims abstract description 30
- 238000012545 processing Methods 0.000 claims abstract description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 8
- 239000000919 ceramic Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
The utility model discloses an electron beam vibration material disk equipment focus current characteristic parameter collection device, including setting up the receiving assembly in electron beam vibration material disk equipment's vacuum chamber and the outer signal processing system of vacuum chamber. The receiving assembly consists of 2 supports, namely a feeding support and a receiving support, 2 horizontal rollers, namely a feeding horizontal shaft and a receiving horizontal shaft, 2 winding drums, namely a feeding winding drum and a receiving winding drum, a metal film, a winding motor and a beam receiving metal plate. When an electron beam emitted by the electron beam additive manufacturing equipment breaks through the working section metal film, the electron beam irradiates the beam current receiving metal plate, and electrons irradiated on the beam current receiving metal plate form a current signal which is led into the signal processing system. The utility model discloses use the metallic film to intercept the material as electron beam, the time of the metallic film through collecting electron beam breakdown obtains electron beam vibration material disk equipment's focusing current characteristic parameter, and it is simple and easy to have the structure, is suitable for the characteristics that the collection scope is adjustable and easy operation.
Description
Technical Field
The utility model relates to a vibration material disk makes technical field, concretely relates to electron beam vibration material disk makes equipment focus current characteristic parameter collection device.
Background
In recent years, additive manufacturing technology has been advanced sufficiently, and is widely used in the fields of aerospace, biomedical and the like. With the high-end application field, the requirements of various industries on additive manufacturing and molding products are higher and higher, which also puts higher process requirements on electron beam additive manufacturing equipment.
The electron beam type electron beam additive manufacturing equipment has the characteristics of high energy absorption rate, small pollution and high material utilization rate, and is widely applied to industrial production. The electron beam deflection angle is increased to enlarge the scanning range of the electron beam when the single electron gun electron beam additive manufacturing equipment is used for forming large-size parts, but the increase of the deflection angle can cause the defocusing phenomenon of the electron beam to influence the melting effect of metal powder and further influence the part forming precision, so that the characteristic parameters of the focusing current in a working plane need to be collected to correct the focusing current when the electron beam additive manufacturing equipment works.
The focusing current characteristic parameter collecting method of the traditional electron beam additive manufacturing equipment judges whether the electron beam focus falls on a characteristic parameter point or not by observing the brightness of an electron beam spot, so that the focusing current characteristic parameter is obtained. However, this focusing current characteristic parameter collection method is highly subjective because it requires subjective observation by human eyes.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve is the subjectivity problem that traditional focusing current characteristic parameter collection device brought, provides an electron beam vibration material disk equipment focusing current characteristic parameter collection device, and it has the structure simply, and the applicable collection scope is adjustable and easy operation's characteristics.
In order to solve the above problems, the utility model discloses a realize through following technical scheme:
the focusing current characteristic parameter collecting device of the electron beam additive manufacturing equipment comprises a receiving assembly arranged in a vacuum chamber of the electron beam additive manufacturing equipment and a signal processing system arranged outside the vacuum chamber of the electron beam additive manufacturing equipment;
the receiving assembly consists of 2 supports, namely a feeding support and a receiving support, 2 horizontal rollers, namely a feeding horizontal shaft and a receiving horizontal shaft, 2 drums, namely a feeding drum and a receiving drum, a metal film, a coiling motor and a beam current receiving metal plate; the feeding support and the receiving support are arranged oppositely, and a certain distance is reserved between the feeding support and the receiving support; the feeding winding drum and the feeding horizontal shaft are arranged on the feeding support, and the feeding horizontal shaft is positioned right above the feeding winding drum; the material receiving winding drum and the material receiving horizontal shaft are arranged on the material receiving support, and the material receiving horizontal shaft is positioned right above the motor; the central axes of the feeding winding drum, the receiving winding drum, the feeding horizontal shaft and the receiving horizontal shaft are parallel to each other; the central axes of the feeding horizontal shaft and the receiving horizontal shaft are at the same horizontal height; one end of the metal film is fixed on the feeding winding drum, and the other end of the metal film is fixed on the material receiving winding drum through the feeding horizontal shaft and the material receiving horizontal shaft in sequence; a metal film between the feeding horizontal shaft and the receiving horizontal shaft, namely a working section copper mold, is kept in a horizontal state, and the upper surface of the working section metal film is superposed with a working plane of a working platform of the electron beam additive manufacturing equipment; the coverage area of the working section metal film is an electron beam scanning working area of the electron beam additive manufacturing equipment; the output shaft of the coiling motor is connected with the material receiving reel, and when the coiling motor drives the material receiving reel to rotate, the copper mold wound on the feeding reel passes through the feeding horizontal shaft and the material receiving horizontal shaft and then is wound on the material receiving reel; the beam receiving metal plate is made of conductive metal and is arranged right below the working section metal film; the beam receiving metal plate is electrically isolated from the inner wall of the vacuum chamber of the electron beam additive manufacturing equipment; the beam receiving metal plate is connected with the signal processing system through a lead, when an electron beam emitted by the electron beam additive manufacturing equipment punctures the metal film of the working section, the electron beam irradiates the beam receiving metal plate, and an electron irradiated on the beam receiving metal plate forms a current signal which is led into the signal processing system.
In the above scheme, the bottom of the beam receiving metal plate is provided with an insulating gasket.
In the scheme, the feeding horizontal shaft and the receiving horizontal shaft are completely the same in shape and size.
In the above scheme, the central axes of the feeding winding drum and the receiving winding drum are at the same horizontal height.
In the above scheme, the overall thickness of the metal film is uniform.
Compared with the prior art, the utility model discloses use the metallic film to intercept the material as electron beam, obtain electron beam vibration material disk equipment's focusing current characteristic parameter through the time of collecting the metallic film that the electron beam punctures. Compared with the traditional inclined plane-molten pool extreme value method, the method can only measure the focus position of the electron beam vertically emitted to a working plane, and further obtains the focusing current parameter of the electron beam additive manufacturing equipment. And the utility model discloses can measure the focus position behind the electron beam deflection, and then collect the focusing current characteristic parameter behind the electron beam deflection. Compare in the method that utilizes Faraday's section of thick bamboo to judge electron beam vibration material disk equipment best focus current, the utility model discloses equipment structure is simple, and the technical threshold is low, and measurement step convenient operation, consumptive material low cost.
Drawings
Fig. 1 is a structural diagram of a focusing current characteristic parameter collecting device of an electron beam additive manufacturing apparatus.
Fig. 2 is a schematic view of installation in the electron beam additive manufacturing apparatus of fig. 1.
Reference numbers in the figures: 1. a feeding support; 2. a material receiving bracket; 3. a feeding horizontal shaft; 4. a material receiving horizontal shaft; 5. a feeding drum; 6. a material receiving reel; 7. a metal film; 8. a coil motor; 9. a beam receiving metal plate; 10. and an insulating gasket.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the following specific examples.
Referring to fig. 1, a focusing current characteristic collecting device of an electron beam additive manufacturing apparatus includes a receiving assembly disposed inside a vacuum chamber of the electron beam additive manufacturing apparatus and a signal processing system disposed outside the vacuum chamber of the electron beam additive manufacturing apparatus.
The receiving assembly consists of 2 supports, namely a feeding support 1 and a receiving support 2, 2 horizontal rollers, namely a feeding horizontal shaft 3 and a receiving horizontal shaft 4, 2 drums, namely a feeding drum 5 and a receiving drum 6, a metal film 7, a coiling motor 8 and a beam current receiving metal plate 9, and is shown in figure 2. The feeding support 1 and the receiving support 2 are arranged oppositely, and a certain distance exists between the feeding support and the receiving support. The feeding reel 5 and the feeding horizontal shaft 3 are arranged on the feeding support 1, and the feeding horizontal shaft 3 is positioned right above the feeding reel 5. The material receiving winding drum 6 and the material receiving horizontal shaft 4 are arranged on the material receiving support 2, and the material receiving horizontal shaft 4 is positioned right above the motor. The central axes of the feeding reel 5, the receiving reel 6, the feeding horizontal shaft 3 and the receiving horizontal shaft 4 are parallel to each other. The central axes of the feeding horizontal shaft 3 and the receiving horizontal shaft 4 are at the same horizontal height. One end of the metal film 7 is fixed on the feeding reel 5, and the other end of the metal film 7 is fixed on the receiving reel 6 through the feeding horizontal shaft 3 and the receiving horizontal shaft 4. The metal film 7 between the feeding horizontal shaft 3 and the receiving horizontal shaft 4, namely the working section copper mold, is kept in a horizontal state, and the upper surface of the working section metal film 7 is superposed with the working plane of an electron beam spot, namely the working plane of a working platform, of the electron beam additive manufacturing equipment in the forming process. According to the size difference of electron beam additive manufacturing equipment, the distance between two winding drums of the collecting equipment can be freely adjusted, but the collecting equipment is not too large, the center of the metal film 7 drops to influence experimental data, and if the parameter collecting area is too large, a partition collecting method can be adopted to collect the characteristic parameters of the focusing current in the working area. In order to ensure a uniform breakdown time, the overall thickness of the metal film 7 is uniform. In the preferred embodiment of the present invention, the metal film 7 is a 0.2mm thick copper film or aluminum film. In order to ensure the level of the working section metal film 7, in the preferred embodiment of the present invention, the shape and size of the feeding horizontal shaft 3 and the receiving horizontal shaft 4 are identical, and the central axes of the feeding reel 5 and the receiving reel 6 are at the same level. The coverage area of the working section metal film 7 is an electron beam scanning working area of the electron beam additive manufacturing equipment. The output shaft of coil stock motor 8 links to each other with receipts material reel 6, and when coil stock motor 8 drove receipts material reel 6 and rotates, the copper mould of coil winding on feed reel 5 was through feed horizontal axis 3 and receipts material horizontal axis 4 after, and the coil winding is on receiving material reel 6. The beam receiving metal plate 9 is made of a conductive metal and is placed right under the working section metal film 7. In the preferred embodiment of the present invention, the beam receiving metal plate 9 is a stainless steel plate. The bottom that the metal sheet 9 was received to the beam current is equipped with insulating gasket 10, and the inner wall electrical isolation of the real empty room of metal sheet 9 and electron beam vibration material disk equipment is received to the beam current the utility model discloses in the preferred embodiment, insulating gasket 10 is ceramic gasket.
The utility model discloses a coil stock motor 8 and reel cooperation bring one-way transmission and make 7 horizontal migration of metallic film, utilize the beam current of metallic film 7 below to receive metal sheet 9 and receive the electron beam signal, recycle signal processing system and handle the beam current and receive the signal of telecommunication that metal sheet 9 received and just can obtain the time that the electron beam punctures metallic film 7, obtain the focusing current characteristic parameter of electron beam vibration material disk equipment through the time of puncturing metallic film 7. When an electron beam emitted by the electron beam additive manufacturing equipment breaks through the metal film 7, the electron beam irradiates the beam receiving metal plate 9, the beam receiving metal plate 9 is isolated from the inner wall of the vacuum chamber by the insulating gasket 10, and an electron forming current signal irradiated on the beam receiving metal plate 9 is guided into the signal processing system and is processed by the signal processing system. The signal processing system is used for processing the current signal collected on the beam current receiving metal plate 9, and the time signal of the current signal received by the beam current receiving metal plate 9 is used as a judgment signal of the optimal focusing current of the electron beam additive manufacturing equipment. In order to ensure that the focusing current characteristic parameter collecting device of the electron beam additive manufacturing equipment can accurately record the starting and closing time of the electron beam additive manufacturing equipment each time, the beam receiving metal plate 9 is connected with the starting and closing control of the electron beam additive manufacturing equipment through a lead. The experiment is traversed for multiple times by adjusting the deflection current, the signal processing system starts timing when the electron beam is emitted during each experiment, and the signal processing system stops timing when the electric signal received by the beam receiving metal plate 9 has a peak value, so that the breakdown time of each time is obtained. And drawing a fitting curve under the current deflection current by using the breakdown time, and when the acquired peak time is shortest, judging that the focusing current of the equipment at the moment is the optimal focusing current under the deflection angle.
The utility model discloses the principle is: the device is installed in a vacuum working chamber of the rapid forming device, the upper surface of a metal film 7 coincides with a working plane of the electron beam additive manufacturing device when forming a 3D part, a beam receiving metal plate 9 is placed below the metal film 7, the beam receiving metal plate 9 is electrically isolated from the outer wall of the rapid forming device through a ceramic gasket, and a signal on the beam receiving metal plate 9 is led out through a lead. Controlling deflection current I of x-axis by central controller of rapid prototyping devicepxY-axis deflection current IpyThe electron beam focus is moved to a certain characteristic point. By fine-tuning the focusing current I at the position of a certain characteristic pointfThe punching is repeated on the metal film 7, and when the time from the beam emission to the beam receiving metal plate 9 for receiving the electric signal is shortest, the focusing current at this time is the optimum focusing current for the characteristic point.
It should be noted that, although the above-mentioned embodiments of the present invention are illustrative, the present invention is not limited thereto, and therefore, the present invention is not limited to the above-mentioned embodiments. Other embodiments, which can be made by those skilled in the art in light of the teachings of the present invention, are considered to be within the scope of the present invention without departing from the principles thereof.
Claims (5)
1. The device for collecting the focusing current characteristic parameters of the electron beam additive manufacturing equipment is characterized by comprising a receiving assembly arranged in a vacuum chamber of the electron beam additive manufacturing equipment and a signal processing system arranged outside the vacuum chamber of the electron beam additive manufacturing equipment;
the receiving assembly consists of 2 supports, namely a feeding support (1) and a receiving support (2), 2 horizontal rollers, namely a feeding horizontal shaft (3) and a receiving horizontal shaft (4), 2 winding drums, namely a feeding winding drum (5) and a receiving winding drum (6), a metal film (7), a winding motor (8) and a beam current receiving metal plate (9); the feeding support (1) and the receiving support (2) are arranged oppositely, and a certain distance is reserved between the feeding support and the receiving support; the feeding drum (5) and the feeding horizontal shaft (3) are arranged on the feeding support (1), and the feeding horizontal shaft (3) is positioned right above the feeding drum (5); the material receiving winding drum (6) and the material receiving horizontal shaft (4) are arranged on the material receiving support (2), and the material receiving horizontal shaft (4) is positioned right above the motor; the central axes of the feeding winding drum (5), the receiving winding drum (6), the feeding horizontal shaft (3) and the receiving horizontal shaft (4) are parallel to each other; the central axes of the feeding horizontal shaft (3) and the receiving horizontal shaft (4) are positioned at the same horizontal height; one end of the metal film (7) is fixed on the feeding winding drum (5), and the other end of the metal film (7) is fixed on the material receiving winding drum (6) through the feeding horizontal shaft (3) and the material receiving horizontal shaft (4) in sequence; a metal film (7) between the feeding horizontal shaft (3) and the receiving horizontal shaft (4), namely a working section copper mold, is kept in a horizontal state, and the upper surface of the working section metal film (7) is superposed with the working plane of the working platform of the electron beam additive manufacturing equipment; the coverage area of the working section metal film (7) is an electron beam scanning working area of the electron beam additive manufacturing equipment; an output shaft of the coiling motor (8) is connected with the receiving winding drum (6), and when the coiling motor (8) drives the receiving winding drum (6) to rotate, a copper die wound on the feeding winding drum (5) is wound on the receiving winding drum (6) after passing through the feeding horizontal shaft (3) and the receiving horizontal shaft (4); the beam receiving metal plate (9) is made of conductive metal and is arranged right below the working section metal film (7); the beam receiving metal plate (9) is electrically isolated from the inner wall of the vacuum chamber of the electron beam additive manufacturing equipment; the beam receiving metal plate (9) is connected with the signal processing system through a lead, when an electron beam emitted by the electron beam additive manufacturing equipment breaks through the working section metal film (7), the electron beam irradiates the beam receiving metal plate (9), and an electron irradiated on the beam receiving metal plate (9) forms a current signal and is led into the signal processing system.
2. The electron beam additive manufacturing apparatus focusing current characteristic parameter collecting device according to claim 1, wherein an insulating spacer (10) is provided on a bottom of the beam receiving metal plate (9).
3. The electron beam additive manufacturing apparatus focusing current characteristic parameter collecting device according to claim 1, wherein the feeding horizontal shaft (3) and the receiving horizontal shaft (4) are identical in shape and size.
4. The device for collecting characteristic parameters of focusing current of electron beam additive manufacturing equipment according to claim 3, wherein the central axes of the feeding reel (5) and the receiving reel (6) are at the same horizontal level.
5. The electron beam additive manufacturing apparatus focusing current characteristic parameter collecting device according to claim 1, wherein an entire thickness of the metal film (7) is uniform.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020165125.0U CN211804372U (en) | 2020-02-12 | 2020-02-12 | Focusing current characteristic parameter collecting device of electron beam additive manufacturing equipment |
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| CN202020165125.0U CN211804372U (en) | 2020-02-12 | 2020-02-12 | Focusing current characteristic parameter collecting device of electron beam additive manufacturing equipment |
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| CN211804372U true CN211804372U (en) | 2020-10-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114684642A (en) * | 2022-03-30 | 2022-07-01 | 中国科学院近代物理研究所 | Thin film material irradiation experimental device used in high vacuum environment |
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2020
- 2020-02-12 CN CN202020165125.0U patent/CN211804372U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114684642A (en) * | 2022-03-30 | 2022-07-01 | 中国科学院近代物理研究所 | Thin film material irradiation experimental device used in high vacuum environment |
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Granted publication date: 20201030 |
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