CN211576985U - Defect detection device and defect detection system for additive manufacturing - Google Patents
Defect detection device and defect detection system for additive manufacturing Download PDFInfo
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- CN211576985U CN211576985U CN201922229611.4U CN201922229611U CN211576985U CN 211576985 U CN211576985 U CN 211576985U CN 201922229611 U CN201922229611 U CN 201922229611U CN 211576985 U CN211576985 U CN 211576985U
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Abstract
The utility model discloses a defect detecting device and defect detecting system of vibration material disk, this defect detecting device include that laser takes place mechanism, laser detection mechanism and control mechanism, control mechanism respectively with laser takes place mechanism and laser detection mechanism and connects for control laser takes place the first laser of mechanism transmission to vibration material disk finished piece in vibration material disk manufacturing process, and control laser detection mechanism transmission second laser detects with the radiation signal that produces first laser to vibration material disk finished piece, and the detection signal of receiving laser detection mechanism feedback. The utility model discloses can realize the defect detection to the vibration material disk finished piece, its simple structure easily realizes, and it is better, the precision is higher to detect the real-time to can avoid the problem of the surperficial blind area of vibration material disk finished piece, help improving the finished product quality of vibration material disk finished piece.
Description
Technical Field
The utility model relates to an additive manufacturing field, in particular to defect detecting device and defect detecting system of additive manufacturing.
Background
The additive manufacturing technology is a technology for manufacturing a solid part by designing data through a Computer Aided Design (CAD) and adopting a material layer-by-layer accumulation method, and the additive manufacturing technology thoroughly subverts a top-down research strategy adopted by a traditional material removal (namely, cutting processing) technology, and is a bottom-up material accumulation manufacturing method.
The internal quality of the additive product is one of the bottleneck problems restricting the development of the laser additive manufacturing process. Based on the technical principles of point-by-point scanning melting, line-by-line scanning lapping and layer-by-layer accumulation forming in laser additive manufacturing, a metal material is subjected to complex thermodynamic behaviors under the action of laser, and is influenced by various conditions such as laser parameters, scanning parameters, powder materials, temperature and the like in the cyclic reciprocating process of heating melting, molten pool flowing and cooling solidification.
The inventors of the present application have found, through long-term research and development, that the defect detection in the conventional additive manufacturing adopts common inspection means such as ultrasonic flaw detection and X-ray detection, and the defect detection has low precision, and cannot detect pores of 0.1mm or less and non-fusion defects. In addition, the existing detection method mainly carries out off-line detection on the formed additive parts, so that the detection real-time performance is poor, a large number of unqualified products are easy to generate, and the additive manufacturing cost is increased. Meanwhile, compared with the traditional manufacturing method, the additive manufacturing method has the advantages that the machining allowance of the surface of the part is small, and surface blind areas exist in more detection methods, so that partial areas cannot be detected, and the quality hidden danger exists.
SUMMERY OF THE UTILITY MODEL
The utility model provides a defect detecting device and defect detecting system of vibration material disk to solve among the prior art less, the lower technical problem of precision of defect detection scope to the vibration material disk finished piece.
For solving the technical problem, the utility model discloses a technical scheme provide a defect detecting device of vibration material disk, take place mechanism, laser detection mechanism and control mechanism including laser, control mechanism respectively with laser take place the mechanism with laser detection mechanism connects for control in vibration material disk in-process laser takes place the first laser of mechanism's transmission to vibration material disk finished piece, control laser detection mechanism transmission second laser extremely vibration material disk finished piece is with right the radiation signal that first laser produced detects, and the receipt the detection signal of laser detection mechanism feedback.
In a specific embodiment, the defect detecting apparatus further includes a robot, the robot is connected to the control mechanism, the laser generating mechanism is a pulse laser, and the pulse laser is configured to generate the first laser and emit the first laser through a first lens disposed on the robot.
In a specific embodiment, the laser detection mechanism is a laser interference detector for generating the second laser light and emitting the second laser light through a second lens disposed on the robot.
In a specific embodiment, an optical fiber is connected between the pulse laser and the first lens, and between the laser interference detector and the second lens.
In a specific embodiment, control mechanism includes host computer management mechanism, AD acquisition mechanism, signal conditioning mechanism and robot control mechanism, host computer management mechanism respectively with AD acquisition mechanism with robot control mechanism connects, AD acquisition mechanism respectively with pulse laser with the laser interference detector is connected, signal conditioning mechanism respectively with AD acquisition mechanism with the laser interference detector is connected, robot control mechanism with the robot is connected.
In one embodiment, the pulsed laser is a Nd: YAG pulsed laser.
In order to solve the technical problem, the utility model discloses a another technical scheme provides a defect detecting system of vibration material disk, including vibration material disk device and foretell defect detecting device, defect detecting device is used for right vibration material disk device preparation vibration material disk device carries out the defect detection.
In a specific embodiment, the additive manufacturing apparatus includes a workbench, a material supply mechanism disposed corresponding to the workbench, and an additive manufacturing laser disposed corresponding to the material supply mechanism, and the additive manufacturing laser is connected to the control mechanism to act on the material supply mechanism under the control of the control mechanism, so as to prepare the additive manufactured part on the workbench and adjust a manufacturing process according to the detection signal.
In a specific embodiment, the material supply mechanism includes a lens and a powder feeding nozzle, the powder feeding nozzle is arranged corresponding to a workbench and used for spraying powder material, and the lens is used for receiving additive manufacturing laser emitted by the additive manufacturing laser and emitting the additive manufacturing laser to the powder feeding nozzle so as to act on the powder material to form the additive manufactured part on the workbench.
In a specific embodiment, the material supply mechanism further includes a powder feeder connected to the powder feeding nozzle for supplying the powder material to the powder feeding nozzle, and a focusing mirror disposed between the lens and the powder feeding nozzle for focusing the additive manufacturing laser.
The utility model discloses a control mechanism who is connected with laser generation mechanism and laser detection mechanism respectively is set up, can make laser generation mechanism transmission first laser to vibration material disk finished piece in vibration material disk manufacturing process, laser detection mechanism transmission second laser detects with the radiation signal that produces first laser to vibration material disk finished piece, and receive the detected signal of laser detection mechanism feedback, thereby realize the defect detection to vibration material disk finished piece, its simple structure easily realizes, it is better to detect the real-time, the precision is higher, and can avoid the problem of the surface blind area of vibration material disk finished piece, help improving the finished product quality of vibration material disk finished piece.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
fig. 1 is a schematic structural diagram of an embodiment of a defect detection apparatus for additive manufacturing according to the present invention;
fig. 2 is a schematic structural diagram of a robot in an embodiment of the defect detection apparatus for additive manufacturing according to the present invention;
fig. 3 is a schematic structural diagram of an embodiment of the defect detection system for additive manufacturing according to the present invention;
fig. 4 is a schematic structural diagram of an additive manufacturing apparatus in an embodiment of a defect detection system for additive manufacturing according to the present invention;
fig. 5 is a schematic flow chart of an embodiment of a defect detection method for additive manufacturing according to the present invention;
fig. 6 is a schematic flow chart of another embodiment of a defect detection method for additive manufacturing according to the present invention;
fig. 7 is a schematic diagram of laser scanning on an additive manufactured part in another embodiment of a defect detection method for additive manufacturing according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
The terms "first" and "second" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. While the term "and/or" is merely one type of association that describes an associated object, it means that there may be three types of relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Referring to fig. 1, the utility model discloses defect detecting device 10 embodiment of additive manufacturing includes that laser takes place the mechanism, laser detection mechanism and control mechanism 300, and control mechanism 300 takes place the mechanism with laser respectively and laser detection mechanism is connected for control laser takes place the first laser of mechanism transmission to the additive finished piece in the additive manufacturing process, and control laser detection mechanism transmission second laser detects with the radiation signal that produces first laser to the additive finished piece, and the detection signal of receiving the feedback of laser detection mechanism.
The embodiment of the utility model provides a control mechanism 300 that is connected with laser generation mechanism and laser detection mechanism respectively through the setting, can make laser generation mechanism transmission first laser to vibration material disk finished piece in vibration material disk manufacturing process, laser detection mechanism transmission second laser detects with the radiation signal that produces first laser to vibration material disk finished piece, and receive the detected signal of laser detection mechanism feedback, thereby realize the defect detection to vibration material disk finished piece, its simple structure easily realizes, it is better to detect the real-time, the precision is higher, and can avoid the problem of the surface blind area of vibration material disk finished piece, help improving the finished product quality of vibration material disk finished piece.
Referring to fig. 2, in the present embodiment, the defect detecting apparatus 10 further includes a robot 400, the robot 400 is connected to the control mechanism 300, the laser generating mechanism is a pulse laser 100, and the pulse laser 100 is configured to generate a first laser and emit the first laser through a first lens 410 disposed on the robot 400.
In this embodiment, the pulsed laser 100 may be a Nd: YAG (Neodymium-doped yttrium aluminum Garnet) pulsed laser.
In the present embodiment, the laser detection mechanism is a laser interference detector 200, and the laser interference detector 200 is configured to generate the second laser light and emit the second laser light through a second lens 420 disposed on the robot 400.
In this embodiment, the first laser light generated by the pulse laser 100 may be emitted to the first lens 410 through an optical fiber, and the second laser light generated by the laser interference detector 200 may be emitted to the second lens 420 through an optical fiber.
In this embodiment, the control mechanism 300 includes an upper computer management mechanism 310, an Analog/Digital (a/D) acquisition mechanism 320, a signal conditioning mechanism 330, and a robot control mechanism 340, where the upper computer management mechanism 310 is connected to the a/D acquisition mechanism 320 and the robot control mechanism 340, the a/D acquisition mechanism 320 is connected to the pulse laser 100 and the laser interference detector 200, the signal conditioning mechanism 330 is connected to the a/D acquisition mechanism 320 and the laser interference detector 200, and the robot control mechanism 340 is connected to the robot 400.
Referring to fig. 3, the present invention discloses additive manufacturing's defect detection system embodiment includes additive manufacturing device 500 and defect detecting device 10, and defect detecting device 10 is used for carrying out defect detection to additive manufactured piece 600 that additive manufacturing device 500 prepared. The specific structure of the defect detection apparatus 10 is described in the above embodiment of the defect detection apparatus 10, and is not described herein again.
Referring to fig. 4 together, in this embodiment, an additive manufacturing apparatus 500 includes a table 510, a material supply mechanism 520 disposed corresponding to the table 510, and an additive manufacturing laser 530 disposed corresponding to the material supply mechanism 520, where the additive manufacturing laser 530 is connected to the control mechanism 300 to act on the material supply mechanism 520 under the control of the control mechanism 300, so as to prepare an additive manufactured article 600 on the table 510, and adjust a manufacturing process according to a detection signal.
In this embodiment, the material supply mechanism 520 includes a powder feeder 521, a powder feeding nozzle 522, a focusing mirror 523, and a lens 524, where the powder feeder 521 is connected to the powder feeding nozzle 522 and is configured to provide a powder material to the powder feeding nozzle 522, the powder feeding nozzle 522 is configured to correspond to the workbench 510 and is configured to spray the powder material, the lens 524 is respectively configured to correspond to the additive manufacturing laser 530 and the powder feeding nozzle 522, the focusing mirror 523 is configured between the lens 524 and the powder feeding nozzle 522, and the lens 524 is configured to receive additive manufacturing laser light emitted by the additive manufacturing laser 530 and emit the additive manufacturing laser light to the powder feeding nozzle 522 after being focused by the focusing mirror 523 to act on the powder material, so as to form the additive manufactured part 600 on the workbench 510.
Referring to fig. 3 and 5, an embodiment of a defect detection method for additive manufacturing according to the present invention includes:
s710, the control mechanism 300 controls the laser generating mechanism to emit the first laser to the additive manufactured article 600 during the additive manufacturing process to generate the radiation signal.
S720, the control mechanism 300 controls the laser detection mechanism to emit the second laser to the additive manufacturing element 600, so as to detect the radiation signal.
S730, the control mechanism 300 receives the detection signal fed back by the laser detection mechanism.
The embodiment of the utility model provides a control mechanism 300 that is connected with laser generation mechanism and laser detection mechanism respectively through the setting, can make laser generation mechanism transmission first laser to vibration material disk finished piece in vibration material disk manufacturing process, laser detection mechanism transmission second laser detects with the radiation signal that produces first laser to vibration material disk finished piece, and receive the detected signal of laser detection mechanism feedback, thereby realize the defect detection to vibration material disk finished piece, its simple structure easily realizes, it is better to detect the real-time, the precision is higher, and can avoid the problem of the surface blind area of vibration material disk finished piece, help improving the finished product quality of vibration material disk finished piece.
Referring to fig. 2, 3 and 6, another embodiment of the defect detection method for additive manufacturing according to the present invention includes:
s810, the upper computer management mechanism 310 sends an additive manufacturing signal to the additive manufacturing apparatus 500 to prepare the additive manufactured article 600.
S820, the upper computer management mechanism 310 sends a first control signal and a second control signal to the A/D acquisition mechanism 320.
In this embodiment, when the thickness of the additive manufactured article 600 is greater than or equal to the thickness threshold, the upper computer management mechanism 310 sends the first control signal and the second control signal. The upper computer management mechanism 310 may calculate a time required for the thickness of the additive manufacturing apparatus 600 to reach a thickness threshold according to the manufacturing efficiency of the additive manufacturing apparatus 500, and send the first control signal and the second control signal when the time is reached. The upper computer management mechanism 310 may also be connected to a height detection device (not shown in the figure), and send the first control signal and the second control signal when the height detection device detects that the thickness of the additive manufactured part 600 reaches the thickness threshold, which is not limited herein.
In this embodiment, the upper computer management mechanism 310 also sends a control signal to the robot 400 through the robot control mechanism 340 at the same time, so as to control the arm position of the robot 400 according to the position of the additive material 600 and adjust the positions of the first lens 410 and the second lens 420.
S830, the a/D collecting mechanism 320 controls the pulse laser 100 to generate a first laser according to the first control signal, and transmits the first laser to the additive manufacturing device 600 through the first lens 410.
And S840, the A/D acquisition mechanism 320 controls the laser interference detector 200 to generate second laser according to the second control signal, and the second laser is emitted to the additive manufacturing element 600 through the second lens 420.
In this embodiment, the upper computer management mechanism 310 may adjust the laser energy of the pulse laser 100 and the laser interference detector 200 according to the appearance roughness of the additive manufactured article 600.
Referring to fig. 7, the emitting point of the first laser is the excitation point M1、M2…MnAnd the emission point of the second laser is a detection point, wherein the distance between the excitation point and the detection point is less than L, so that the detection point can detect laser irradiation generated by the excitation point on the surface of the additive manufactured part 600.
Specifically, the excitation point generates laser irradiation due to a laser thermo-elastic effect to generate a transverse wave signal, a surface wave signal and a longitudinal wave signal, and when the surface and the inside of the additive manufactured piece have air holes 610 and are not fused, deformed or cracked, the longitudinal wave signal generates an echo signal when encountering a defect, and can be detected by the detection point.
In this embodiment, the distance between the excitation point and the detection point may be preset, and the upper computer management mechanism 310 sends a control signal to the robot control mechanism 340 to control the robot 400 according to the preset distance information between the excitation point and the detection point, so as to adjust the distance between the first lens 410 and the second lens 420, so that the distance between the excitation point and the detection point is smaller than L.
In other embodiments, the upper computer management mechanism 310 may also adjust the distance between the first lens 410 and the second lens 420 in real time during the detection process, which is not limited herein.
And S850, the laser interference detector 200 sends the detection signal to the upper computer management mechanism 310 through the signal conditioning mechanism 330 and the A/D acquisition mechanism 320 in sequence.
And S860, the upper computer management mechanism 310 processes the detection signal to generate a third control signal.
In this embodiment, the upper computer management mechanism 310 may store the defect information of the additive manufactured part 600 according to the detection signal, establish an additive manufacturing defect database for analysis and management, establish a defect prediction model, and further optimize the manufacturing process parameters of the additive manufactured part 600 to generate a third control signal.
S870, sending a third control signal to the additive manufacturing apparatus 500 to adjust the manufacturing process of the additive manufacturing apparatus 500, so as to reduce or remove the defect of the additive manufacturing apparatus 600 during the manufacturing process.
The embodiment of the utility model provides a control mechanism 300 that is connected with laser generation mechanism and laser detection mechanism respectively through the setting, can make laser generation mechanism transmission first laser to vibration material disk finished piece in vibration material disk manufacturing process, laser detection mechanism transmission second laser detects with the radiation signal that produces first laser to vibration material disk finished piece, and receive the detected signal of laser detection mechanism feedback, thereby realize the defect detection to vibration material disk finished piece, its simple structure easily realizes, it is better to detect the real-time, the precision is higher, and can avoid the problem of the surface blind area of vibration material disk finished piece, help improving the finished product quality of vibration material disk finished piece.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. The defect detection device for additive manufacturing is characterized by comprising a laser generation mechanism, a laser detection mechanism and a control mechanism, wherein the control mechanism is respectively connected with the laser generation mechanism and the laser detection mechanism and used for controlling the laser generation mechanism to emit first laser to an additive manufactured piece in the additive manufacturing process, controlling the laser detection mechanism to emit second laser to the additive manufactured piece so as to detect a radiation signal generated by the first laser and receiving a detection signal fed back by the laser detection mechanism.
2. The apparatus of claim 1, further comprising a robot, the robot being connected to the control mechanism, the laser generating mechanism being a pulsed laser, the pulsed laser being configured to generate the first laser light and emit the first laser light through a first lens disposed on the robot.
3. The apparatus according to claim 2, wherein the laser detection mechanism is a laser interference detector for generating the second laser light and emitting the second laser light through a second lens provided on the robot.
4. The defect detection apparatus of claim 3, wherein an optical fiber is connected between the pulse laser and the first lens, and between the laser interference detector and the second lens.
5. The defect detecting device according to claim 3, wherein the control mechanism comprises an upper computer management mechanism, an A/D acquisition mechanism, a signal conditioning mechanism and a robot control mechanism, the upper computer management mechanism is respectively connected with the A/D acquisition mechanism and the robot control mechanism, the A/D acquisition mechanism is respectively connected with the pulse laser and the laser interference detector, the signal conditioning mechanism is respectively connected with the A/D acquisition mechanism and the laser interference detector, and the robot control mechanism is connected with the robot.
6. The defect detecting apparatus according to claim 2, wherein the pulse laser is a Nd: YAG pulse laser.
7. A defect detection system for additive manufacturing, comprising an additive manufacturing apparatus and the defect detection apparatus of any one of claims 1 to 6, wherein the defect detection apparatus is configured to perform defect detection on the additive manufactured part prepared by the additive manufacturing apparatus.
8. The system of claim 7, wherein the additive manufacturing apparatus includes a table, a material supply mechanism disposed corresponding to the table, and an additive manufacturing laser disposed corresponding to the material supply mechanism, and the additive manufacturing laser is connected to the control mechanism to act on the material supply mechanism under the control of the control mechanism, so as to prepare the additive on the table and adjust a manufacturing process according to the detection signal.
9. The defect detection system of claim 8, wherein the material supply mechanism comprises a lens and a powder delivery nozzle, the powder delivery nozzle is disposed corresponding to a workbench and is configured to spray a powder material, and the lens is configured to receive additive manufacturing laser light emitted by the additive manufacturing laser and emit the additive manufacturing laser light to the powder delivery nozzle to act on the powder material to form the additive part on the workbench.
10. The defect detection system of claim 9, wherein the material supply mechanism further comprises a powder feeder connected to the powder feed nozzle for supplying the powder material to the powder feed nozzle, and a focusing mirror disposed between the lens and the powder feed nozzle for focusing the additive manufacturing laser.
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| CN201922229611.4U CN211576985U (en) | 2019-12-11 | 2019-12-11 | Defect detection device and defect detection system for additive manufacturing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954542A (en) * | 2019-12-11 | 2020-04-03 | 深圳先进技术研究院 | Defect detection device, defect detection system and defect detection method for additive manufacturing |
| CN114323595A (en) * | 2022-01-17 | 2022-04-12 | 浙江大学 | Laser performance comprehensive test platform of fiber composite material additive manufacturing equipment |
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2019
- 2019-12-11 CN CN201922229611.4U patent/CN211576985U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954542A (en) * | 2019-12-11 | 2020-04-03 | 深圳先进技术研究院 | Defect detection device, defect detection system and defect detection method for additive manufacturing |
| CN114323595A (en) * | 2022-01-17 | 2022-04-12 | 浙江大学 | Laser performance comprehensive test platform of fiber composite material additive manufacturing equipment |
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