CN102621931A - On-line monitoring system for friction stir welding and on-line monitoring method therefor - Google Patents
On-line monitoring system for friction stir welding and on-line monitoring method therefor Download PDFInfo
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Abstract
The invention relates to an on-line monitoring system for the friction stir welding and an on-line monitoring method for the friction stir welding. The system comprises an on-line detection module, a signal acquiring and processing module and a welding technology control module. The on-line detection module consists of three signal real-time sensing units which are embedded into feed systems of friction stir welding equipment by flanges. Each signal real-time sensing unit consists of a torque sensor, a coupler, an adjusting plate, a flange and the like, wherein the torque sensors are arranged between motors and screw rods by the couplers, sensing signals are transmitted to the signal acquiring and processing module in a computer by a terminal plate and a data acquiring card, and the welding three-way force is displayed in real time. Meanwhile, the welding technology control module reasons out a proper technological parameter according to a technological data base and a technological rule, so that a welding process can be adjusted in real time. The on-line monitoring system and the on-line monitoring method are compact in structure, convenient to install, practical and reliable, so that not only can the real-time detection of a friction stir welding process be realized, but also the feedback control over the technological parameters can be further realized.
Description
Technical field
The present invention relates to the friction Stir technical field, particularly relate to a kind of online monitoring system and method that is used for friction stir welding.
Background technology
Friction stir welding is a kind of new solid-state interconnection technique, and it is to realize welding with the heat of friction that is soldered the material surface generation through the stirring-head of high speed rotating.Because this technology has significant advantages such as homomorphism connects, production cost is lower, welding process is pollution-free, therefore be successfully applied to the welding aspect of light metal materials such as aluminium, magnesium, almag.Along with the fast development and the widespread use of agitating friction welding technology, people are also increasingly high to the requirement of product welding quality.In welding process, weld force directly affects friction force, moment of friction, frictional heating power and the welding temperature between stirring-head and the wlding material, is the important parameter that influences weldquality.Therefore, accurate optimization technological parameter how, rationally controlling the upset force in the friction Stir, the drag of advancing and side force is the key point of decision weldquality.
In the prior art; As disclosed Chinese invention patent (publication number: 101929892A) proposed a kind of online test system of friction stir welding; Through being installed on the base on the platen with two dynamometry octagonal ring symmetries; During welding workpiece is installed on the base, has realized the online detection of weld force.Although this invention provides a kind of on-line measuring device and method to welding process three-dimensional power; But the workpiece demand that can't adapt to agitating friction soldering equipment welding difformity, different size; Lack control module simultaneously, can not adjust in real time welding condition.
Summary of the invention
Technical matters to be solved by this invention provides a kind of online monitoring system and method that is used for friction stir welding; Can in welding process, detect in real time upset force, the drag of advancing, side force etc., and the friction stir welding online monitoring system that can adjust in real time welding condition.
The technical solution adopted for the present invention to solve the technical problems is: a kind of online monitoring system that is used for friction stir welding is provided; Comprise online detection module, signals collecting and processing module, welding technology control module; Said online detection module is made up of three signal in real time sensing units, and the X/Y/Z that said three signal in real time sensing units are directly embedded into the agitating friction soldering equipment respectively is in feed system; Said signals collecting and processing module are used to obtain detection signal, real-time processing and detecting signal, and convert detection signal to welding upset force, the drag of advancing and side force information; Described welding technology control module is handled with the welding three-dimensional power of display module output data and is analyzed, and infers suitable welding condition, and through feeding back to the digital control system of welding gear, realizes the real-time adjustment of technological parameter.
Described signal in real time sensing unit comprises upper coupling, torque sensor, following shaft coupling, adjustment plate and flange; Described torque sensor through the pin and screw retention on flange; Described adjustment plate is used to adjust the actual installation position of torque sensor at lathe; Said torque sensor is connected to the drive motor of feed system with the X/Y/Z of agitating friction soldering equipment through upper coupling, is connected with leading screw through following shaft coupling.
Said signals collecting comprises terminal strip, data collecting card and data processing and the display unit that links to each other successively with processing module; Described three signal in real time sensing units link to each other with terminal strip respectively through the high-frequency electrical cable; Said data collecting card is used to obtain the detection signal of said three signal in real time sensing units; Said data processing and display unit are used for real-time processing and detecting signal, and convert detection signal to welding upset force, the drag of advancing and side force information.
Said welding technology control module comprises process parameter optimizing unit and feedback unit; Said process parameter optimizing unit comprises technological data bank, process rule storehouse and control algolithm; The welding three-dimensional power of signals collecting and processing module output is analyzed through control algolithm according to the content in technological data bank and the process rule storehouse, inferred welding condition; Said feedback unit carries out communication with the digital control system of welding gear and is connected, and the welding condition that goes out is by inference adjusted in real time.
The technical solution adopted for the present invention to solve the technical problems is: a kind of on-line monitoring method that is used for friction stir welding also is provided, may further comprise the steps:
(1) according to the geometric configuration and the welding requirements of workpiece and joint, the establishment numerical control program carries out the product welding; When the welding main shaft presses down workpiece and feeding when welding, sense the output signal of friction welding apparatus X/Y/Z respectively in real time to feed system through three online sensing units;
(2) gather the output signal, and will export that signal sends data processing to and display unit carries out data processing, to demonstrate the welding process information that welds upset force, the drag of advancing and side force in real time;
(3) the process parameter optimizing unit is handled the welding process information of exporting with display unit to data and is carried out real-time reasoning and decision-making, to obtain suitable welding condition according to technological data bank and process rule;
(4) welding condition after will optimizing through feedback unit is sent in the digital control system of welding gear, with real-time control stir friction welding process.
Beneficial effect
Owing to adopted above-mentioned technical scheme, the present invention compared with prior art has following advantage and good effect:
1, online detection module of the present invention is directly embedded in the agitating friction soldering equipment, is blended in one with equipment, compact conformation, install convenient, practical reliable.
2, the present invention has accumulated a large amount of basic datas through information such as the upset force in the real-time detection stir friction welding process, the drag of advancing and side forces, for setting up and optimizing the welding technology database and process rule provides technical support.
3, the present invention is through detecting the product welding process in real time, thereby avoided influencing owing to designs such as stirring-head, technological parameter are unreasonable problem such as quality of weld joint.
4, welding technology control module of the present invention can be carried out process parameter optimizing according to the variation of weld force, and with the lathe communication, assign instruction to lathe, control lathe welding condition.
5, the present invention has write down a large amount of welding process informations through the collaborative work of online detection module and signals collecting and processing module, for the research and development of friction Stir equipment provide technical support.
Description of drawings
Fig. 1 is the overall pie graph of friction stir welding supervisory system of the present invention;
Fig. 2 is the structural representation of online detection module of the present invention;
Fig. 3 is the workflow diagram of friction stir welding method for supervising of the present invention.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in the restriction scope of the present invention.Should be understood that in addition those skilled in the art can do various changes or modification to the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
As shown in Figure 1, a kind of online monitoring system that is used for friction stir welding comprises online detection module, signals collecting and processing module, welding technology control module.
Online detection module is made up of three signal in real time sensing unit 1-1,1-2 and 1-3, and the X/Y/Z that is directly embedded into the agitating friction soldering equipment is in feed system.
Signals collecting and processing module are made up of terminal strip 21, data collecting card 22 and data processing and display unit 23; Welding three-dimensional power is handled and converted to data processing and display unit 23: information such as upset force, the drag of advancing and side force in real time according to the detection signal that data collecting card 22 obtains.
Three signal in real time sensing unit 1-1,1-2 and 1-3 link to each other with terminal strip 21 respectively through the high-frequency electrical cable.
The welding technology control module is made up of welding quality tracking cell, process parameter optimizing unit 31 and feedback unit 32; Process parameter optimizing unit 31 comprises technological data bank, process rule storehouse and control algolithm etc.; And data are handled the welding three-dimensional power of exporting with display unit 23 analyze; Infer suitable welding condition, and carry out communication, to realize the real-time adjustment of technological parameter through the feedback unit 32 and the digital control system 33 of welding gear.
As shown in Figure 2, the signal in real time sensing unit is made up of upper coupling 11, torque sensor 12, following shaft coupling 13, adjustment plate 14 and flange 15.Wherein, Torque sensor 12 passes through pin, screw retention on flange 14; The X/Y/Z of friction welding apparatus is connected with torque sensor 12 through upper coupling 11 to feed system drive motor 16, and simultaneously, shaft coupling 13 was connected with leading screw 17 again under torque sensor 12 passed through.Wherein, adjustment plate 14 is used to adjust the actual installation position of torque sensor 12 at lathe.
Embodiment 2
As shown in Figure 3, at first, according to the geometric configuration and the welding requirements of workpiece and joint, the establishment numerical control program carries out the product welding; When the welding main shaft presses down workpiece and feeding when welding, three online sensing units are sensed the output signal of friction welding apparatus X/Y/Z to feed system respectively in real time.Then, through high-frequency electrical cable and data collecting card 22, this output signal is gathered, and sends data processing to and display unit carries out data processing, to demonstrate welding process informations such as welding upset force, the drag of advancing and side force in real time.Then, the process parameter optimizing unit is handled the welding process information of exporting with display unit to data and is carried out real-time reasoning and decision-making, to obtain suitable welding condition according to technological data bank and process rule.At last, through feedback unit, the technological parameter after optimizing is sent in the digital control system of welding gear, with real-time control stir friction welding process.
Embodiment 3
(1) two AA2024-T3 Al alloy parts (specimen size is 150 * 60 * 3mm, and the welding line joint form is: butt joint, I type groove) is passed through clamps on the worktable of friction welding apparatus.
(2) confirm following technological parameter according to workpiece material and thickness: stirring-head inclination angle (stirring-head center line and perpendicular to the folded acute angle of the straight line of weld seam) is 2 °; The rotational speed 1400rpm of stirring-head; The speed of welding of stirring-head is 120mm/min; Stirring-head shaft shoulder volume under pressure is 0.15mm; The stirring-head speed of pressing down is 5mm/min.
(3) establishment numerical control program comprises that welding presses down process, welding is advanced and the pumpback process, and after welding presses down end, suspends 5s.In the welding process, change, carry out the parameters Optimization adjustment according to welding three-dimensional power, and through the technological parameter in the feedback unit control processing.
(4) quality to welding joint after welding finishes detects, and the result shows that along the weld seam working direction, the intensity of welding joint increases gradually.
Claims (5)
1. online monitoring system that is used for friction stir welding; Comprise online detection module, signals collecting and processing module, welding technology control module; It is characterized in that; Said online detection module is made up of three signal in real time sensing units (1-1,1-2,1-3), and the X/Y/Z that said three signal in real time sensing units (1-1,1-2,1-3) are directly embedded into the agitating friction soldering equipment respectively is in feed system; Said signals collecting and processing module are used to obtain detection signal, real-time processing and detecting signal, and convert detection signal to welding upset force, the drag of advancing and side force information; Described welding technology control module is handled with the welding three-dimensional power of display module output data and is analyzed, and infers suitable welding condition, and the digital control system (33) through feeding back to welding gear, realizes the real-time adjustment of technological parameter.
2. the online monitoring system that is used for friction stir welding according to claim 1 is characterized in that, described signal in real time sensing unit comprises upper coupling (11), torque sensor (12), following shaft coupling (13), adjustment plate (14) and flange (15); Described torque sensor (12) through the pin and screw retention on flange (15); Described adjustment plate (14) is used to adjust the actual installation position of torque sensor (12) at lathe; Said torque sensor (12) is connected to the drive motor of feed system with the X/Y/Z of agitating friction soldering equipment through upper coupling (11), is connected with leading screw (17) through following shaft coupling (13).
3. the online monitoring system that is used for friction stir welding according to claim 1 is characterized in that, said signals collecting comprises terminal strip (21), data collecting card (22) and data processing and the display unit (23) that links to each other successively with processing module; Described three signal in real time sensing units link to each other with terminal strip (21) respectively through the high-frequency electrical cable; Said data collecting card (22) is used to obtain the detection signal of said three signal in real time sensing units; Said data processing and display unit (23) are used for real-time processing and detecting signal, and convert detection signal to welding upset force, the drag of advancing and side force information.
4. the online monitoring system that is used for friction stir welding according to claim 1; It is characterized in that; Said welding technology control module comprises process parameter optimizing unit (31) and feedback unit (32); Said process parameter optimizing unit (31) comprises technological data bank, process rule storehouse and control algolithm, the welding three-dimensional power of signals collecting and processing module output is analyzed through control algolithm according to the content in technological data bank and the process rule storehouse, infers welding condition; Said feedback unit (32) carries out communication with the digital control system of welding gear and is connected, and the welding condition that goes out is by inference adjusted in real time.
5. an on-line monitoring method that is used for friction stir welding is characterized in that, may further comprise the steps:
(1) according to the geometric configuration and the welding requirements of workpiece and joint, the establishment numerical control program carries out the product welding; When the welding main shaft presses down workpiece and feeding when welding, sense the output signal of friction welding apparatus X/Y/Z respectively in real time to feed system through three online sensing units;
(2) gather the output signal, and will export that signal sends data processing to and display unit carries out data processing, to demonstrate the welding process information that welds upset force, the drag of advancing and side force in real time;
(3) the process parameter optimizing unit is handled the welding process information of exporting with display unit to data and is carried out real-time reasoning and decision-making, to obtain suitable welding condition according to technological data bank and process rule;
(4) welding condition after will optimizing through feedback unit is sent in the digital control system of welding gear, with real-time control stir friction welding process.
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| CN201210063224.8A CN102621931B (en) | 2012-03-12 | 2012-03-12 | On-line monitoring system for friction stir welding and on-line monitoring method thereof |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104400214A (en) * | 2014-11-24 | 2015-03-11 | 首都航天机械公司 | Device and method for measuring and controlling upsetting force and forward resistance of friction stir welding machine |
| CN104439691A (en) * | 2014-11-24 | 2015-03-25 | 首都航天机械公司 | Adaptive controller of upset force and forward resistance in friction stir welding |
| CN105904075A (en) * | 2016-04-22 | 2016-08-31 | 燕山大学 | Experimental device for flexible closed-loop control over ERW pipe weld joint opening angles |
| CN107423650A (en) * | 2017-08-09 | 2017-12-01 | 青岛理工大学 | Projection type augmented reality assembly induction and monitoring system and implementation method thereof |
| CN108021101A (en) * | 2017-12-11 | 2018-05-11 | 上海航天设备制造总厂有限公司 | A kind of auger friction welding formation system of large caliber aluminium alloy |
| CN109323724A (en) * | 2018-11-02 | 2019-02-12 | 东华大学 | A kind of power heat integration test sensor with thermal protection function |
| CN110548987A (en) * | 2019-09-23 | 2019-12-10 | 航天工程装备（苏州）有限公司 | friction stir welding process test platform system and tool |
| CN110640298A (en) * | 2019-09-26 | 2020-01-03 | 沈阳航空航天大学 | Friction stir welding real-time temperature field monitoring system and control method |
| CN110640300A (en) * | 2019-10-12 | 2020-01-03 | 沈阳航空航天大学 | Online parameter regulation and control system for friction stir welding and control method |
| CN110653507A (en) * | 2019-09-26 | 2020-01-07 | 沈阳航空航天大学 | Semi-solid processing method for preparing ultra-fine grain/nano-grain plate |
| CN111633322A (en) * | 2020-06-17 | 2020-09-08 | 贵州航天天马机电科技有限公司 | Friction stir welding main shaft for automatic robot welding |
| CN112238289A (en) * | 2019-07-16 | 2021-01-19 | 中国科学院沈阳自动化研究所 | Wireless temperature acquisition system of friction stir welding robot |
| CN112846476A (en) * | 2020-12-15 | 2021-05-28 | 广州瑞松智能科技股份有限公司 | Intelligent integrated friction stir welding numerical control system |
| CN116252039A (en) * | 2023-05-15 | 2023-06-13 | 上海耀焊科技有限公司 | Intelligent control method and system for inertia friction welding machine |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439691A (en) * | 2014-11-24 | 2015-03-25 | 首都航天机械公司 | Adaptive controller of upset force and forward resistance in friction stir welding |
| CN104439691B (en) * | 2014-11-24 | 2015-12-02 | 首都航天机械公司 | A kind of agitating friction welding upset force and advance drag adaptive controller |
| CN104400214B (en) * | 2014-11-24 | 2016-01-20 | 首都航天机械公司 | A kind of friction stir welding lathe upset force and advance drag measure and control device and method |
| CN104400214A (en) * | 2014-11-24 | 2015-03-11 | 首都航天机械公司 | Device and method for measuring and controlling upsetting force and forward resistance of friction stir welding machine |
| CN105904075A (en) * | 2016-04-22 | 2016-08-31 | 燕山大学 | Experimental device for flexible closed-loop control over ERW pipe weld joint opening angles |
| CN107423650A (en) * | 2017-08-09 | 2017-12-01 | 青岛理工大学 | Projection type augmented reality assembly induction and monitoring system and implementation method thereof |
| CN108021101A (en) * | 2017-12-11 | 2018-05-11 | 上海航天设备制造总厂有限公司 | A kind of auger friction welding formation system of large caliber aluminium alloy |
| CN109323724A (en) * | 2018-11-02 | 2019-02-12 | 东华大学 | A kind of power heat integration test sensor with thermal protection function |
| CN112238289A (en) * | 2019-07-16 | 2021-01-19 | 中国科学院沈阳自动化研究所 | Wireless temperature acquisition system of friction stir welding robot |
| CN110548987A (en) * | 2019-09-23 | 2019-12-10 | 航天工程装备（苏州）有限公司 | friction stir welding process test platform system and tool |
| CN110653507A (en) * | 2019-09-26 | 2020-01-07 | 沈阳航空航天大学 | Semi-solid processing method for preparing ultra-fine grain/nano-grain plate |
| CN110640298A (en) * | 2019-09-26 | 2020-01-03 | 沈阳航空航天大学 | Friction stir welding real-time temperature field monitoring system and control method |
| CN110640298B (en) * | 2019-09-26 | 2021-09-21 | 沈阳航空航天大学 | Friction stir welding real-time temperature field monitoring system and control method |
| CN110640300A (en) * | 2019-10-12 | 2020-01-03 | 沈阳航空航天大学 | Online parameter regulation and control system for friction stir welding and control method |
| CN110640300B (en) * | 2019-10-12 | 2021-04-27 | 沈阳航空航天大学 | Online parameter control method for friction stir welding |
| CN111633322A (en) * | 2020-06-17 | 2020-09-08 | 贵州航天天马机电科技有限公司 | Friction stir welding main shaft for automatic robot welding |
| CN112846476A (en) * | 2020-12-15 | 2021-05-28 | 广州瑞松智能科技股份有限公司 | Intelligent integrated friction stir welding numerical control system |
| CN116252039A (en) * | 2023-05-15 | 2023-06-13 | 上海耀焊科技有限公司 | Intelligent control method and system for inertia friction welding machine |
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