CN214236677U - Electric arc vibration material disk's multisensor intelligence shower nozzle - Google Patents
Electric arc vibration material disk's multisensor intelligence shower nozzle Download PDFInfo
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- CN214236677U CN214236677U CN202022395834.0U CN202022395834U CN214236677U CN 214236677 U CN214236677 U CN 214236677U CN 202022395834 U CN202022395834 U CN 202022395834U CN 214236677 U CN214236677 U CN 214236677U
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Abstract
The utility model discloses an electric arc vibration material disk's multisensor intelligence shower nozzle, the intelligence shower nozzle includes flange, print the shower nozzle, thread feeding mechanism and the multisensor module of being connected with technology control module data, the multisensor module is including printing precision detecting system, molten bath and electric arc state detecting system, molten bath protective atmosphere detecting system and automatic maintenance system, it prints the shower nozzle and carries out vibration material disk to print precision detecting system and be used for acquireing the model and rebuild position back control, molten bath and electric arc state detecting system are used for adjusting electric arc length, heat input value control crystallization temperature and residual stress level, molten bath protective atmosphere detecting system is used for controlling protective gas flow and melting zone and heat affected zone environmental parameter and detects. The utility model discloses with multisensor and the integrative integration of process control algorithm, guarantee the vibration material disk manufacturing quality, according to vibration material disk process feedback parameter, carry out real-time adjustment to the electric current, send a speed, the speed of supplying gas, realize high-speed high-quality electric arc vibration material disk.
Description
Technical Field
The utility model relates to a metal vibration material disk technical field especially relates to electric arc vibration material disk's multisensor intelligence shower nozzle.
Background
In the field of metal additive, a traditional electric arc additive system is usually free of a sensor, and a common electric arc welding power supply and fixed process parameters are usually used for printing, so that manual detection and manual intervention are needed in the printing process to check and eliminate printing defects; or add the sensor, debug alone, this kind of method development cycle is long, and adaptability is poor, is subject to the geometry of the work piece of printing, can't guarantee printing quality, binds with the motion platform simultaneously, can't accomplish the requirement of the adaptation of a set of many types of platforms of material increase system, and manufacturing process parameter portability is poor, and printing quality needs to guarantee through long-time a large amount of debugs, and is consuming time and hard, and earlier stage technology development cost is higher.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electric arc vibration material disk's multisensor intelligence shower nozzle, with multisensor and the integrative integration of process control algorithm, realized all kinds of motion platforms like the general adaptation of industrial robot, gantry machine tool etc. can guarantee the printing quality through sensor and process control algorithm simultaneously, according to the feedback parameter of printing the process, carry out real-time adjustment to electric current, send a speed, the speed of supplying gas, realize high-speed, high-quality electric arc vibration material disk and print.
In order to achieve the above purpose, the utility model adopts the technical scheme that: electric arc vibration material disk's multisensor intelligence shower nozzle, including flange, printing bonding tool, thread feeding mechanism and the multisensor module of being connected with technology control module data, multisensor module is including printing precision detecting system, molten bath and electric arc state detecting system and molten bath protective atmosphere detecting system, it is used for obtaining model reconstruction position back control to print the precision detecting system the shower nozzle carries out vibration material disk, molten bath and electric arc state detecting system are used for adjusting electric arc length, and heat input value control printing work piece residual stress and crystallization temperature, molten bath protective atmosphere detecting system is used for controlling protector flow and melting zone and heat affected zone environmental parameter and detects.
As a further optimization, the printing precision detection system comprises a vision sensor, a structured light sensor and a printing nozzle position acquisition module, wherein the vision sensor and the structured light sensor are used for reconstructing a printing model in a three-dimensional mode in real time, the structured light sensor is mainly used for measuring the feature size of a part, compensating and controlling subsequent features by adjusting process parameters, and performing graphical processing on collected point cloud data to obtain the printing layer height, the total layer height and the printing center line.
As a further optimization, the vision sensor, the structured light sensor and the printing spray head position acquisition module are arranged below the connecting flange through a support and are positioned on one side of the printing spray head.
As a further optimization, the molten pool and arc state detection system comprises a voltage sensor, a current sensor, a wire feeding speed sensor and a temperature sensor, wherein the voltage sensor is used for judging the arc length in the material increase process, the current sensor and the wire feeding speed sensor are used for monitoring theoretical heat input values in unit time through the current magnitude and the wire feeding speed respectively, and the temperature sensor is used for monitoring the temperature distribution of the printed workpiece.
As a further optimization, the molten pool and arc state detection system further comprises a molten pool vision sensor.
As a further optimization, the current sensor is arranged on a power line of the printing spray head; the wire feeding speed sensor is arranged on a transmission motor of the wire feeding mechanism.
As a further optimization, the molten pool protective atmosphere detection system comprises a protective gas flow detection module, an oxygen concentration monitoring module and an environment temperature and humidity detection module, and the oxygen concentration in the printing area is ensured to be in a lower range by monitoring environmental parameters in the material adding space.
As a further optimization, the protective gas flow detection module is arranged at a protective gas inlet of the printing spray head.
The additive manufacturing method of the arc additive multi-sensor intelligent nozzle comprises the following steps,
s1) inputting a digital model of the metal part;
s2) generating path parameters and process parameters through a parameter planning algorithm;
s3) parameters are designated according to a planning algorithm, and main process parameters of arc additive are controlled to designated values through a real-time control algorithm;
s4) additively printing the part by arc.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. compared with the existing sensorless system or the self-assembled sensor electric arc material increase system, the intelligent nozzle realizes the decoupling of the electric arc material increase system and the moving platform, can realize one set of system and multi-platform adaptation, and can realize quick development and quality guarantee due to the universality of the printing system;
2. the traditional printing system often cannot control the process parameters of the in-layer printing process in real time, a layer-by-layer compensation method is generally adopted, and the intelligent nozzle realizes real-time planning, real-time control and real-time compensation of the process parameters of the printing process and realizes high-speed electric arc additive printing;
3. the utility model discloses intelligence shower nozzle is independent shower nozzle, itself can be independent of different motion systems, if can the carry on three axial platform, has higher replaceability.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Figure 2 is the use the utility model discloses material increase schematic diagram of intelligence shower nozzle.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 2, the arc additive multi-sensor intelligent nozzle mainly includes four parts, namely, a connection flange 1, a printing nozzle 2, a wire feeding mechanism 3 and a multi-sensor module, wherein the printing welding head is mounted on the connection flange and extends downwards through the connection flange, the wire feeding mechanism is fixed to the lower side of the connection flange through a mounting bracket and is located on one side of the printing welding head, the wire feeding mechanism is used for feeding metal wires 100 into an arc area of a motor below the printing welding head, and the multi-sensor module is connected with process control module data. The integrated arc power interface, protection gas interface and the sensor interface that include on the flange, the arc power interface is used for printing the electrode on the shower nozzle and is electrically linked with the external power, and the protection gas connects and is used for filling protective gas into to printing the shower nozzle, and the sensor interface can be used for installing current sensor and protective gas flow detection module.
The multi-sensor module mainly comprises three subsystems, namely a printing precision detection system 41, wherein the printing precision detection system comprises a visual sensor, a structured light sensor and a printing nozzle position acquisition module, a model which is being printed is reconstructed in a real-time three-dimensional mode through the visual sensor and the structured light sensor in the printing process, and data such as the layer height, the printing center line and the like of a printing layer are obtained through the graphic processing of acquired point cloud data; the molten pool and arc state detection system comprises a voltage sensor, a current sensor 421, a wire feeding speed sensor 422, a temperature sensor module and a molten pool vision sensor module, wherein the length of an arc in the printing process is judged through the voltage sensor, theoretical heat input in unit time is monitored through the current sensor and the wire feeding speed sensor (the heat input is approximately proportional to the current), the temperature distribution of parts is monitored through the temperature sensor, and the residual stress and the crystallization temperature of a printing part are ensured to be in a reasonable range through the monitoring; molten bath protective atmosphere detecting system, including protective gas flow detection module 431, oxygen concentration monitoring module, ambient temperature humidity detection module etc. through the environmental quantity monitoring to in the printing space, guarantee to print the region in, oxygen concentration is in lower within range, does not produce the oxidation, carries out reasonable monitoring to each side environmental parameter simultaneously.
In addition, the process control module: through data monitoring of a multi-sensor system, the current, the wire feeding speed and the arc length (the height of a printing nozzle) are adjusted in real time by adopting a reinforcement learning controller and a traditional dynamics controller, and highly controllable material increase intelligent control is realized.
The additive manufacturing method of the intelligent nozzle comprises the following steps: firstly, inputting a digital model of a metal part, then generating path parameters and process parameters through a parameter planning algorithm (the patent uses a reinforcement learning algorithm), then controlling main process parameters (including current, wire feeding speed, shielding gas feeding speed and the like) of electric arc additive to be specified values through a real-time control algorithm according to parameters specified by the planning algorithm, and then printing the part through electric arc additive.
In the printing process, a plurality of physical quantities (including arc current, arc voltage, wire feeding speed, geometric appearance of printed parts, shielding gas feeding speed and the like) in the printing process are detected through a plurality of sensors, and then effective physical quantities subjected to filtering estimation are extracted through a parameter extraction and estimation algorithm (for example, the layer height, the layer width and the like of a printed metal layer are extracted through the scanned geometric appearance, and effective values and the like are extracted through a filtering algorithm for measuring the current with noise).
The utility model discloses changed the pure ring-opening sensorless design of traditional electric arc vibration material disk, it is integrated with control algorithm, sensor and electric arc vibration material disk shower nozzle, thoroughly realized that electric arc vibration material disk shower nozzle system and motion platform's mutually does not influence, on different motion platforms, can use same shower nozzle, can guarantee electric arc vibration material disk's printing quality simultaneously.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (8)
1. The electric arc material increase multi-sensor intelligent nozzle is characterized by comprising a connecting flange, a printing nozzle, a wire feeding mechanism and a multi-sensor module which is connected with process control module data; the multi-sensor module comprises a printing precision detection system, a molten pool and electric arc state detection system and a molten pool protective atmosphere detection system, the printing precision detection system is used for controlling the printing nozzle to perform additive printing after obtaining a model reconstruction position, the molten pool and electric arc state detection system is used for adjusting the electric arc length and controlling the crystallization temperature and the residual stress of a printing workpiece according to a heat input value, and the molten pool protective atmosphere detection system is used for controlling the flow of the protector and detecting the environmental parameters of a melting area and a heat affected area.
2. The arc additive multi-sensor intelligent nozzle of claim 1, wherein the printing precision detection system comprises a vision sensor, a structured light sensor and a printing nozzle position acquisition module, the vision sensor and the structured light sensor three-dimensionally reconstruct a printing model in real time, and the printing layer height, the total layer height and the printing center line are obtained by graphically processing the acquired point cloud data.
3. The arc additive multi-sensor intelligent showerhead of claim 2, wherein the vision sensor, the structured light sensor, and the print showerhead position acquisition module are disposed below the attachment flange by a bracket and on a side of the print horn.
4. The arc additive multi-sensor intelligent nozzle of claim 1, wherein the molten pool and arc state detection system comprises a voltage sensor, a current sensor, a wire feeding speed sensor and a temperature sensor, the voltage sensor determines the length of an arc in the process of material addition, the current sensor and the wire feeding speed sensor respectively monitor theoretical heat input values in unit time according to the current magnitude and the wire feeding speed, and the temperature sensor monitors the temperature distribution of a printed workpiece.
5. The arc additive multi-sensor smart showerhead of claim 4, wherein the puddle and arc condition detection system further comprises a puddle vision sensor.
6. The arc additive multi-sensor smart showerhead of claim 4, wherein the current sensor is mounted on a print showerhead power line; the wire feeding speed sensor is arranged on a transmission motor of the wire feeding mechanism.
7. The arc additive multi-sensor intelligent nozzle according to claim 1, wherein the molten pool protective atmosphere detection system comprises a protective gas flow detection module, an oxygen concentration monitoring module and an environment temperature and humidity detection module, and the oxygen concentration in the printing area is ensured to be within a required range by monitoring environmental parameters in the additive space.
8. The arc additive multi-sensor intelligent showerhead of claim 7, wherein the shield gas flow detection module is mounted at a print horn shield gas inlet.
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| CN202022395834.0U CN214236677U (en) | 2020-10-26 | 2020-10-26 | Electric arc vibration material disk's multisensor intelligence shower nozzle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112191991A (en) * | 2020-10-26 | 2021-01-08 | 苏州鑫之博科技有限公司 | Arc additive multi-sensor intelligent nozzle and additive manufacturing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112191991A (en) * | 2020-10-26 | 2021-01-08 | 苏州鑫之博科技有限公司 | Arc additive multi-sensor intelligent nozzle and additive manufacturing method |
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