CN113103573A - Atmosphere detection device and method in additive manufacturing - Google Patents

Abstract

Translated fromChinese

本发明属于增材制造技术领域，公开了一种增材制造中的气氛检测装置及方法。装置包括质谱仪检测单元、相机检测单元；方法中首次利用质谱仪检测单元对定向能量沉积打印区域的气氛变化进行在线检测，同时利用相机检测单元对打印过程中溅射的数目及分布进行在线检测。本发明解决现有技术中无法对增材制造过程中的气氛进行有效检测的问题，本发明实现了对增材制造过程的气氛检测。

The invention belongs to the technical field of additive manufacturing, and discloses an atmosphere detection device and method in additive manufacturing. The device includes a mass spectrometer detection unit and a camera detection unit; in the method, the mass spectrometer detection unit is used for the first time to perform online detection of the atmosphere change in the directional energy deposition printing area, and the camera detection unit is used to perform online detection of the number and distribution of sputtering during the printing process. . The present invention solves the problem in the prior art that the atmosphere in the additive manufacturing process cannot be effectively detected, and the present invention realizes the atmosphere detection in the additive manufacturing process.

Description

Atmosphere detection device and method in additive manufacturing

Technical Field

The invention belongs to the technical field of additive manufacturing, and particularly relates to an atmosphere detection device and method in additive manufacturing.

Background

Additive manufacturing is regarded as a new growth point of future industrial development, and additive manufacturing technology is greatly developed, but large-scale industrial application is not formed yet. The performance and the manufacturing precision of the formed part in the manufacturing process can be a certain amount of unqualified products, the yield of the current SLM (Selective Laser Melting) product is about 70%, and the progress of large-scale industrial application of additive manufacturing is seriously influenced by the lower yield. The main reason is that there is no solution for the process repeatability and quality reliability in the machining process, and a real-time detection device or equipment is urgently needed to monitor the additive manufacturing process and perform feedback processing, so that the whole machining process is optimized in real time by performing targeted regulation and control on the machining process, and the final finished product rate and quality precision of components are improved.

Disclosure of Invention

The invention provides an atmosphere detection device and method in additive manufacturing, and solves the problem that the atmosphere in the additive manufacturing process cannot be effectively detected in the prior art.

The invention provides an atmosphere detection device in additive manufacturing, which comprises: a mass spectrometer detection unit, a camera detection unit;

the mass spectrometer detection unit is used for carrying out online detection on atmosphere change of the directional energy deposition printing area;

the camera detection unit is used for carrying out online detection on the number and distribution of splashes in the printing process.

Preferably, the mass spectrometer detection unit comprises: a time-of-flight mass spectrometer, a probe, a capillary, a mass spectrometer processor;

the mass spectrometer processor is connected with the time-of-flight mass spectrometer, a sample feeding system of the time-of-flight mass spectrometer is connected with the probe, and the capillary tube is fixed on the probe;

the capillary is used for extracting the atmosphere of the obtained printing area;

the probe is used for introducing the atmosphere obtained by the capillary extraction into the time-of-flight mass spectrometer;

the time-of-flight mass spectrometer is used for carrying out atmosphere analysis to obtain an atmosphere analysis result;

and the mass spectrometer processor is used for displaying the atmosphere analysis result.

Preferably, the camera detection unit includes: a camera, a camera switch, a camera processor;

the camera is respectively connected with the camera switch and the camera processor;

the camera is used for collecting a sputtering image in the printing process;

the camera switch is used for remotely controlling a shooting switch of the camera;

the camera processor is used for displaying the sputtering image.

Preferably, the camera comprises a plurality of discrete high-speed industrial cameras, the plurality of high-speed industrial cameras are respectively arranged at different area positions close to the workbench, and the plurality of high-speed industrial cameras are used for acquiring sputtering images from different angles.

Preferably, the time-of-flight mass spectrometer is an electron impact ion source time-of-flight mass spectrometer EI-TOFMS 0610.

Preferably, MEMRECAM ACS-1 is selected as the camera.

Preferably, the atmosphere detection device in additive manufacturing further includes: a processing table unit; the table unit includes: a worktable and a substrate; the base plate is positioned on the workbench and used for placing a workpiece to be processed;

the mass spectrometer detection unit and the camera detection unit are both arranged in the area range close to the processing table unit.

Preferably, the atmosphere detection device in additive manufacturing further includes: a laser processing unit and a protective gas supply unit; the protective gas supply unit is communicated with the laser processing unit;

the laser processing unit includes: the device comprises a computer, a mechanical arm control cabinet, an optical fiber coupler, an axial robot, a mechanical arm, a transmission optical fiber, a laser processing head and a powder feeding device;

the computer respectively with the arm switch board the fiber coupler axial robot connects, axial robot with the arm is connected, the arm with the laser beam machining head is connected, the fiber coupler passes through transmission optic fibre with the laser beam machining head intercommunication, send whitewashed device with the laser beam machining head is connected.

The invention provides an atmosphere detection method in additive manufacturing, which utilizes the atmosphere detection device in additive manufacturing to detect atmosphere, and comprises the following steps: carrying out online detection on atmosphere change of the directional energy deposition printing area by using a mass spectrometer detection unit; and (3) utilizing a camera detection unit to perform online detection on the number and distribution of the sputtered particles in the printing process.

One or more technical schemes provided by the invention at least have the following technical effects or advantages:

in the invention, the mass spectrometer detection unit is used for carrying out online detection on the atmosphere change of the directional energy deposition printing area for the first time, and the camera detection unit is used for carrying out online detection on the number and distribution of sputtering in the printing process, so that the atmosphere detection in the additive manufacturing process is realized.

Drawings

Fig. 1 is a schematic structural diagram of an atmosphere detection apparatus in additive manufacturing according to an embodiment of the present invention;

fig. 2 is a diagram of an experimental result obtained by a camera in an atmosphere detection method in additive manufacturing according to an embodiment of the present invention.

The device comprises acomputer 1, a protectivegas supply unit 2, a mechanicalarm control cabinet 3, anoptical fiber coupler 4, anaxial robot 5, amechanical arm 6, a transmissionoptical fiber 7, a laser processing head 8, a powder feeding device 9, a capillary tube 10, a probe 11, amass spectrometer processor 12, a time-of-flight mass spectrometer 13, aworkbench 14, asubstrate 15, aworkpiece 16 to be processed, acamera 17, acamera processor 18 and acamera switch 19.

Detailed Description

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

Example 1:

embodiment 1 provides an atmosphere detection apparatus in additive manufacturing, mainly including: a mass spectrometer detection unit, a camera detection unit; the mass spectrometer detection unit is used for carrying out online detection on atmosphere change of the directional energy deposition printing area; the camera detection unit is used for carrying out online detection on the number and distribution of splashes in the printing process.

Wherein the mass spectrometer detection unit comprises: time-of-flight mass spectrometer, probe, capillary, mass spectrometer processor. The mass spectrometer processor is connected with the time-of-flight mass spectrometer, a sample feeding system of the time-of-flight mass spectrometer is connected with the probe, and the capillary tube is fixed on the probe; the capillary is used for extracting the atmosphere of the obtained printing area; the probe is used for introducing the atmosphere obtained by the capillary extraction into the time-of-flight mass spectrometer; the time-of-flight mass spectrometer is used for carrying out atmosphere analysis to obtain an atmosphere analysis result; and the mass spectrometer processor is used for displaying the atmosphere analysis result.

Wherein the camera detection unit includes: camera, camera switch, camera processor. The camera is respectively connected with the camera switch and the camera processor; the camera is used for collecting a sputtering image in the printing process; the camera switch is used for remotely controlling a shooting switch of the camera; the camera processor is used for displaying the sputtering image.

In a preferred scheme, the camera comprises a plurality of discrete high-speed industrial cameras, the high-speed industrial cameras are respectively installed at different area positions close to the workbench, and the high-speed industrial cameras are used for acquiring sputtering images from different angles.

In a specific application, the time-of-flight mass spectrometer can be an electron bombardment ion source time-of-flight mass spectrometer EI-TOFMS 0610. The camera can be MEMRECAM ACS-1.

Example 2:

with the apparatus provided inembodiment 1,embodiment 2 provides an atmosphere detection method in additive manufacturing, comprising: carrying out online detection on atmosphere change of the directional energy deposition printing area by using a mass spectrometer detection unit; and (3) utilizing a camera detection unit to perform online detection on the number and distribution of the sputtered particles in the printing process.

The present invention is further described below.

As shown in fig. 1, an embodiment of the present invention provides an atmosphere detection apparatus in additive manufacturing, including: a mass spectrometer detection unit, a camera detection unit, a processing table unit, a laser processing unit, and a shieldinggas supply unit 2.

The mass spectrometer detection unit comprises: time-of-flight mass spectrometer 13, probe 11, capillary 10,mass spectrometer processor 12. Themass spectrometer processor 12 is connected with the time-of-flight mass spectrometer 13, a sample injection system of the time-of-flight mass spectrometer 13 is connected with the probe 11, and the capillary 10 is fixed on the probe 11. The camera detection unit includes:camera 17,camera switch 19,camera processor 18; thecamera 17 is connected to thecamera switch 19 and thecamera processor 18, respectively. The table unit includes: a table 14, asubstrate 15; thebase plate 15 is positioned on theworkbench 14, and thebase plate 15 is used for placing aworkpiece 16 to be processed; the mass spectrometer detection unit and the camera detection unit are both arranged in the area range close to the processing table unit. The shieldinggas supply unit 2 communicates with the laser processing unit. The laser processing unit includes: the device comprises acomputer 1, a mechanicalarm control cabinet 3, anoptical fiber coupler 4, anaxial robot 5, amechanical arm 6, a transmissionoptical fiber 7, a laser processing head 8 and a powder feeding device 9.Computer 1 respectively witharm switch board 3optical fiber coupler 4axial robot 5 is connected,axial robot 5 witharm 6 is connected,arm 6 with laser beam machining head 8 is connected,optical fiber coupler 4 passes through transmissionoptic fibre 7 with laser beam machining head 8 intercommunication, send powder device 9 with laser beam machining head 8 is connected.

Specifically, the mass spectrometer detection unit is installed near the processing table unit, the mass spectrometer detection unit extracts the atmosphere in the central region of the print body through the capillary 10 fixed to the probe 11 by means of tape or the like, introduces the extracted atmosphere into the time-of-flight mass spectrometer 13 through the probe 11, then analyzes the extracted atmosphere through the electron bombardment source and the mass analyzer inside the time-of-flight mass spectrometer 13, and feeds back the analysis result to themass spectrometer processor 12 through software equipment matched with the time-of-flight mass spectrometer 13.

Thecamera switch 19 is used to remotely control thecamera 17's shooting switch near the center area of the print volume to facilitate operation and reduce the effect on the print volume center area atmosphere.

Thecamera 17 may comprise a plurality of discrete high speed industrial cameras facing toward theworkpiece 16 to be machined from different angles for monitoring the number and area of spatter generated near the molten pool and displaying the results on thecamera processor 18, and the experimental results taken by thecamera 17 are shown in fig. 2.

Therefore, the mass spectrometer detection unit and the camera detection unit should be started before the laser processing unit starts to work and debugged to a good working state so as to ensure the integrity of atmosphere detection in the additive manufacturing process and reduce errors.

The atmosphere detection device and method in additive manufacturing provided by the embodiment of the invention at least have the following technical effects:

the atmosphere change of the directional energy deposition printing area is detected on line by using the time-of-flight mass spectrometer for the first time, and the sputtering number and distribution in the printing process are detected on line by using the camera, so that the atmosphere detection in the additive manufacturing process is realized; the device provided by the invention has the advantages of simple structure, convenience in operation and strong adaptability.

Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims (9)

Translated fromChinese

1.一种增材制造中的气氛检测装置，其特征在于，包括：质谱仪检测单元、相机检测单元；1. An atmosphere detection device in additive manufacturing, characterized in that, comprising: a mass spectrometer detection unit and a camera detection unit;所述质谱仪检测单元用于对定向能量沉积打印区域的气氛变化进行在线检测；The mass spectrometer detection unit is used for online detection of the atmosphere change in the directional energy deposition printing area;所述相机检测单元用于对打印过程中溅射的数目及分布进行在线检测。The camera detection unit is used for online detection of the number and distribution of sputtering in the printing process.2.根据权利要求1所述的增材制造中的气氛检测装置，其特征在于，所述质谱仪检测单元包括：飞行时间质谱仪、探头、毛细管、质谱仪处理器；2. The atmosphere detection device in additive manufacturing according to claim 1, wherein the mass spectrometer detection unit comprises: a time-of-flight mass spectrometer, a probe, a capillary, and a mass spectrometer processor;所述质谱仪处理器与所述飞行时间质谱仪连接，所述飞行时间质谱仪的进样系统与所述探头连接，所述毛细管固定在所述探头上；the mass spectrometer processor is connected to the time-of-flight mass spectrometer, the sampling system of the time-of-flight mass spectrometer is connected to the probe, and the capillary is fixed on the probe;所述毛细管用于抽取获得打印区域的气氛；The capillary is used to extract the atmosphere of the printing area;所述探头用于将所述毛细管抽取获得的气氛导入所述飞行时间质谱仪；The probe is used to introduce the atmosphere obtained by the capillary extraction into the time-of-flight mass spectrometer;所述飞行时间质谱仪用于进行气氛分析，得到气氛分析结果；The time-of-flight mass spectrometer is used for atmospheric analysis to obtain atmospheric analysis results;所述质谱仪处理器用于对所述气氛分析结果进行显示。The mass spectrometer processor is used for displaying the analysis result of the atmosphere.3.根据权利要求1所述的增材制造中的气氛检测装置，其特征在于，所述相机检测单元包括：相机、相机开关、相机处理器；3. The atmosphere detection device in additive manufacturing according to claim 1, wherein the camera detection unit comprises: a camera, a camera switch, and a camera processor;所述相机分别与所述相机开关、所述相机处理器连接；the camera is respectively connected with the camera switch and the camera processor;所述相机用于采集打印过程中的溅射图像；The camera is used for collecting sputtering images in the printing process;所述相机开关用于远程控制所述相机的拍摄开关；The camera switch is used to remotely control the shooting switch of the camera;所述相机处理器用于对所述溅射图像进行显示。The camera processor is used for displaying the sputtering image.4.根据权利要求3所述的增材制造中的气氛检测装置，其特征在于，所述相机包括多个分立的高速工业相机，多个所述高速工业相机分别安装在靠近工作台的不同区域位置，多个所述高速工业相机用于从不同角度获取溅射图像。4 . The apparatus for detecting atmosphere in additive manufacturing according to claim 3 , wherein the camera comprises a plurality of discrete high-speed industrial cameras, and the plurality of high-speed industrial cameras are respectively installed in different areas near the workbench. 5 . position, multiple of the high-speed industrial cameras are used to acquire sputter images from different angles.5.根据权利要求2所述的增材制造中的气氛检测装置，其特征在于，所述飞行时间质谱仪选用电子轰击离子源飞行时间质谱仪EI-TOFMS 0610。5 . The atmosphere detection device in additive manufacturing according to claim 2 , wherein the time-of-flight mass spectrometer is an electron bombardment ion source time-of-flight mass spectrometer EI-TOFMS 0610. 6 .6.根据权利要求3所述的增材制造中的气氛检测装置，其特征在于，所述相机选用MEMRECAMACS-1。6 . The atmosphere detection device in additive manufacturing according to claim 3 , wherein the camera is selected from MEMRECAMACS-1. 7 .7.根据权利要求1所述的增材制造中的气氛检测装置，其特征在于，还包括：加工台单元；所述工作台单元包括：工作台、基板；所述基板位于所述工作台上，所述基板用于放置待加工的工件；7 . The atmosphere detection device in additive manufacturing according to claim 1 , further comprising: a processing table unit; the table unit comprises: a table and a substrate; the substrate is located on the table. 8 . , the base plate is used to place the workpiece to be processed;所述质谱仪检测单元、所述相机检测单元均设置在靠近所述加工台单元的区域范围内。Both the mass spectrometer detection unit and the camera detection unit are arranged in a region close to the processing table unit.8.根据权利要求1所述的增材制造中的气氛检测装置，其特征在于，还包括：激光加工单元、保护气体供给单元；所述保护气体供给单元与所述激光加工单元连通；8 . The atmosphere detection device in additive manufacturing according to claim 1 , further comprising: a laser processing unit and a shielding gas supply unit; the shielding gas supply unit communicates with the laser processing unit; 8 .所述激光加工单元包括：计算机、机械臂控制柜、光纤耦合器、轴向机器人、机械臂、传输光纤、激光加工头、送粉装置；The laser processing unit includes: a computer, a robotic arm control cabinet, an optical fiber coupler, an axial robot, a robotic arm, a transmission optical fiber, a laser processing head, and a powder feeding device;所述计算机分别与所述机械臂控制柜、所述光纤耦合器、所述轴向机器人连接，所述轴向机器人与所述机械臂连接，所述机械臂与所述激光加工头连接，所述光纤耦合器通过所述传输光纤与所述激光加工头连通，所述送粉装置与所述激光加工头连接。The computer is respectively connected with the robotic arm control cabinet, the optical fiber coupler, and the axial robot, the axial robot is connected with the robotic arm, and the robotic arm is connected with the laser processing head, so The optical fiber coupler is communicated with the laser processing head through the transmission optical fiber, and the powder feeding device is connected with the laser processing head.9.一种增材制造中的气氛检测方法，其特征在于，利用如权利要求1-8中任一项所述的增材制造中的气氛检测装置进行气氛检测，方法包括：利用质谱仪检测单元对定向能量沉积打印区域的气氛变化进行在线检测；利用相机检测单元对打印过程中溅射的数目及分布进行在线检测。9. An atmosphere detection method in additive manufacturing, characterized in that the atmosphere detection is performed by using the atmosphere detection device in additive manufacturing according to any one of claims 1 to 8, the method comprising: using a mass spectrometer to detect The unit performs on-line detection of the atmosphere change in the directional energy deposition printing area; the camera detection unit is used to perform on-line detection on the number and distribution of sputtering in the printing process.

Images