CN101364106A - Welding quality control system and method for resistance welding - Google Patents
Welding quality control system and method for resistance welding Download PDFInfo
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- CN101364106A CN101364106A CNA2008101986474A CN200810198647A CN101364106A CN 101364106 A CN101364106 A CN 101364106A CN A2008101986474 A CNA2008101986474 A CN A2008101986474A CN 200810198647 A CN200810198647 A CN 200810198647A CN 101364106 A CN101364106 A CN 101364106A
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Abstract
The invention discloses a resistance welding quality control system and a method which serve the functions of real-time collection of the resistance welding data during the process of welding, and dynamic analysis and adjustment of the welding process parameter and the work piece to be processed. The system comprises a parameter setting unit for setting standard parameter ranges required for acceptable welding quality; a parameter collecting unit for collecting the relevant real-time parameters input during the process of welding; a comparison determination unit for comparing the real-time parameter to the corresponding standard parameter range and determining whether the relevant welded product is acceptable, if not, a feedback signal is output; and a control unit for receiving the feedback signal, correcting the real-time parameter and transferring the relevant welded product to a non-conforming product zone. The system and the method can monitor and correct the parameters of the welding process in a real-time manner and pick out the non-conforming product in time.
Description
Technical field
The present invention relates to a kind of quality control system and method, relate in particular to a kind of real-time quality control system of welding work pieces and method that is used for welding process.
Background technology
The Resistance Welding termination process be the instantaneity of dynamic changing process, especially a pinpoint welding procedure and weld nugget form have a Unpredictability, give and weld especially that the control of pinpoint welding procedure quality has brought bigger difficulty.
In process of production, people carry out check measurement to the actual a collection of workpiece that processes usually, and the utilization mathematical statistics method is handled and analyzed, and therefrom finds out rule, finds out the approach that solves the machining precision problem, and normally the carrying out of CONTROL PROCESS process.Desk checking and statistical study are that the classic method of quality control is meticulous a, dullness and time-consuming job.In statistic sampling is handled, have a small amount of unacceptable product omission and enter in the certified products.General control and the analytical model afterwards of adopting of traditional electric resistance welding welding quality controling mode, selective examination welding work pieces and destructive test were confirmed the weldment quality after the dependence welding was finished.Because welding process is the change procedure of a complexity, the mode of selective examination is difficult to guarantee the welding quality unanimity of all over products, be difficult to guarantee the quality of welding work pieces, destructive test needs to handle afterwards, has time delay, also need after obtaining experimental result, take measures to handle even quality problems occur, when product quality goes wrong, can't in time be handled and control, cause unnecessary loss.
Also having mode relatively more commonly used is to adopt classical control theory, by welding process being set up mathematical models the welding quality of welding work pieces is controlled, but because welding process is the change procedure of a complexity, have highly non-linear and the time characteristics that become, make welding process be difficult to obtain best quality control effect.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of real-time collection electric resistance welding welding data, the electric resistance welding welding quality control system and the method for performance analysis, the real-time welding process parameter of adjustment and processing workpiece.
In order to solve the problems of the technologies described above, a kind of electric resistance welding welding method of quality control that the embodiment of the invention provided comprises the steps:
(1), the canonical parameter scope that reaches each required parameter of qualified welding quality is set;
(2), gather corresponding real-time parameter value in the welding process;
(3), comparison described real-time parameter value and described canonical parameter scope, judge that described real-time parameter value is whether in described canonical parameter scope;
(4) if described real-time parameter value is positioned at described canonical parameter scope, execution in step (2) then; If described real-time parameter value is not positioned at described canonical parameter scope, judge that the product of welding is defective in real time, and feedback signal is regulated and control the unit and is adjusted the intermediate value of the described real-time parameter value of welding process input to corresponding described canonical parameter scope, execution in step (2) to regulating and control the unit.
As improvement of the technical scheme, in the described step (4),, then extract corresponding substandard product and be positioned over the substandard product zone when described real-time parameter value is not positioned at described canonical parameter scope.
As improvement of the technical scheme, all corresponding current value, magnitude of voltage, the pressure of comprising of described standard parameter value and real-time parameter value falls into value, presses at least one that falls in velocity amplitude, force value, change value of pressure, the current density value.
According to above-mentioned Resistance Welding welding Quality control method, the present invention also provides a kind of electric resistance welding welding quality control system, and it comprises:
Parameter set unit is used to be provided with the required canonical parameter scope of qualified welding quality that reaches;
Parameter acquisition unit is used to gather each corresponding real-time parameter value that welding process is imported;
The comparison identifying unit, be used to compare the described real-time parameter value of each welding process input and the described canonical parameter scope of corresponding setting, judge whether described real-time parameter value is positioned at described canonical parameter scope, whether the welding product of determining corresponding real-time parameter value is qualified, if defective then output feedback signal;
The regulation and control unit is used for receiving feedback signals and adjusts the intermediate value of the described real-time parameter of welding process input to corresponding canonical parameter scope.
As improvement of the technical scheme, parameter acquisition unit comprises the signal gathering unit that is used to gather the real-time parameter analog quantity and is used for that the real-time parameter analog quantity is converted to digital signal and transfers to the signal processing unit of software systems.
As improvement of the technical scheme, described parameter set unit comprises that the current standard parameter area is provided with unit, weld interval canonical parameter scope the unit is set; Described parameter acquisition unit comprises real-time welding current value and the current sensing means of weld interval that is used to detect by electrode.
As improvement of the technical scheme, described current sensing means comprises current sensor, signal processing module and data is imported the data access port of described comparison identifying unit that described current sensor comprises the coil that is sheathed on described electrode.
As improvement of the technical scheme, described parameter set unit comprises that also the voltage standard parameter area is provided with the unit; Described parameter acquisition unit also comprises the voltage check device that is used to detect real-time welding voltage value, this voltage check device comprise the welding cylinder that is arranged at bonding machine voltage sensor, connect the signal conversion module of this voltage sensor and described comparison identifying unit.
As improvement of the technical scheme, described parameter set unit comprises that also the sunken canonical parameter scope of pressure is provided with the unit and the pressure parameter scope is provided with the unit; Described parameter acquisition unit comprises that also the real-time pressure that is used to detect welding product falls into the grating chi of value and is used to detect the pressure transducer that puts on the product upward pressure when welding.
As improvement of the technical scheme, described electric resistance welding welding quality control system also comprises and is used for the product selecting unit of real-time welding work pieces being classified according to the result of determination of comparison identifying unit, and described product selecting unit comprises the control device of the product quality information that is used for the received signal output unit, by this control device control and extract the automatic sorting device of corresponding substandard product to the waste product district.
Beneficial effect of the present invention is: the electric resistance welding welding method of quality control among the present invention, by preestablishing the required canonical parameter scope of qualified welding quality that reaches, gather welding process parameter in real time, various real-time parameter values and canonical parameter scope in the comparison welding process, judge whether the product welding quality is qualified, find that the unacceptable product product in time sorts out, guarantee that the qualification rate of product closes the symbol customer requirements, realization is carried out in real time welding process, effective On-line Control, control with analytical model afterwards and can't in time find quality problems and the defective of carrying out timely and effective control thereby overcome traditional welding quality, solved finish by welding after selective examination and destructive test confirm that the retardance that the quality controling mode of weldment quality causes wastes, low efficiency problem.All corresponding current value, magnitude of voltage, the pressure of comprising of parameter value and the real-time parameter value of wherein setting up standard falls into value, presses at least one that falls in velocity amplitude, force value, change value of pressure, the current density value, thereby set up Quality Control Model, make welding parameter remain on for a long time in system's range of control.
Electric resistance welding welding quality control system of the present invention is provided with current value by parameter set unit, magnitude of voltage, press the value of falling into, press and fall into velocity amplitude, force value, change value of pressure, the isoparametric value range of current density value, by the grating chi in the parameter acquisition unit, pressure transducers etc. detect current value in real time, magnitude of voltage, press the value of falling into, press and fall into velocity amplitude, force value, change value of pressure, welding process parameters such as current density value, judge by the comparison identifying unit whether the quality of real-time welding work pieces is qualified again, if it is defective then send corresponding signal controlling product selecting mechanism and substandard product is extracted sort out, thereby realized real-time welding Quality control, in time adjust the welding process parameter that does not meet the scope of setting according to the parameter of gathering in real time simultaneously, avoid handling the delay waste of product off quality afterwards.
Description of drawings
Fig. 1 is the schematic flow sheet of electric resistance welding welding method of quality control embodiment provided by the invention;
Fig. 2 is the hardware system synoptic diagram of electric resistance welding welding quality control system embodiment provided by the invention;
Fig. 3 is the composition structural representation of electric resistance welding welding quality control system embodiment provided by the invention.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
Fig. 1 is the schematic flow sheet of electric resistance welding welding method of quality control embodiment provided by the invention, with reference to figure 1, and a kind of electric resistance welding welding method of quality control provided by the invention, it comprises the steps:
101, the canonical parameter scope of qualified required each parameter of welding quality is set;
102, gather the corresponding real-time parameter value of welding process;
103, comparison described real-time parameter value and described canonical parameter scope judges that described real-time parameter value is whether in the scope of described canonical parameter scope;
If 104 described real-time parameter values are positioned at described canonical parameter scope, then reclaim specification product and execution in step 102,
If 105 described real-time parameter values are not positioned at described canonical parameter scope, the product of then judging welding in real time be defective and feedback signal to regulating and control the unit, the intermediate value of the real-time parameter of welding process input to the canonical parameter scope, execution in step 102 are adjusted in the regulation and control unit.
As a kind of embodiment,, can also extract corresponding substandard product and be positioned over the substandard product zone for detecting the situation that described real-time parameter value is not positioned at described canonical parameter scope.
The parameter area that sets up standard in the said method is to be provided with on the software systems that are installed on the special exploitation on the PC (PC or industrial computer), these software systems have one the page are set, behind this page setup, just can be stored in the software systems of computer, in welding process, just can call the parameter that has set and be used for reference to comparison.
The method to set up of canonical parameter scope has two kinds of patterns: the first is provided with the high-low limit value, by the scope of two ultimate value limit standard parameters; It two is that an intermediate value is set, and sets upper deviation value and the lower deviation value that allows, the scope of limit standard parameter therefrom again.
Gathering the real-time parameter value is to realize by the sensor that is arranged at bonding machine, sensor acquisition generally is an analog quantity to corresponding signal, be converted into digital signal by conversion equipment again, transfer to then in the software systems and compare with the canonical parameter scope that sets in advance.
The data analysis of welding process real-time parameter and adjustment mode are: according to statistical analysis principle by cycle time by to the mean value of one or more groups data, the limit deviation that calculates control of standard deviation, real-time parameter value trend limit deviation when welding process, the intermediate value of real-time parameter value to corresponding described canonical parameter scope welded in the automatic adjusting of control system next time, guarantees the CPK value of equipment.Wherein the CPK value is the processing procedure Capability index, is meant the evaluation metrics of an equipment to the quality control ability of the product of its manufacturing.
When the real-time parameter value of above-mentioned welding process was not positioned at the canonical parameter scope, the product that system will weld in real time was judged as failed part, thereby taked means that failed part is separated from certified products.This process is a system software according to the signal of sensor acquisition through the information that data-switching feeds back, and sends the failed part separation command according to system requirements after being judged to be failed part, controls corresponding apparatus for work and realizes its corresponding separating action.Can send failed part when being judged to be failed part and report to the police, the staff is the action of synchronization monitoring equipment simultaneously.
Further, each parameter of described canonical parameter scope correspondence comprises that electric current, voltage, pressure fall into, press at least one in the speed of falling into, pressure, pressure variation, the current density.Pass judgment on the quality of welding work pieces as for selecting which kind of parameter and which parameter, being need be according to expertise, repeatedly factor such as experimental result and workpiece material shape size is selected, only wherein at least one of selection makes up welding quality detection and control system, thereby realizes electric resistance welding welding method of quality control.
Usually influence the practice midwifery factor of product quality of Resistance Welding and mainly comprise electric current, voltage, weld interval, welding foroe etc.
Welding current size by workpiece is bigger than resistance and time both to the influence of heat production.Therefore, in welding process, it is the parameter of a necessary strict control, and preferably preferred electric current is as critical parameter in quality of resistance welds control.Cause that the main cause that electric current changes is voltage ripple of power network and AC welding set secondary loop impedance variation.Impedance variation is because of the geometric configuration variation in loop or because of introduce the magnetic metals of different amounts in the secondary loop.For DC welder, the secondary loop impedance variation does not have obvious influence to electric current.
In order to guarantee nugget size and Joint Strength, weld interval and welding current can replenish within the specific limits mutually.In order to obtain the solder joint of certain intensity, can adopt big electric current and short time (strong condition claims hard standard again), also can adopt little electric current and long-time (weak condition also claims soft standard).Selecting hard standard for use still is soft standard, depends on the power of performance, thickness and the used welding machine of metal.For the metal of different performance and thickness required electric current and time, a bound is all arranged, take this as the standard during use.
Welding foroe has tangible influence to two interelectrode resistance, and along with the increase of welding foroe, resistance significantly reduces, and the amplitude that welding current increases is little, can not influence the heat production that reduces to cause because of resistance and reduce.Therefore, Joint Strength always increases along with welding pressure and reduces, and is when increasing welding pressure to the solution of this problem, increases welding current.As seen welding current is a very important welding process parameter.
Current density is a welding current and the ratio of welding work pieces contact area, also adopts this parameter to analyze electric resistance welding welding quality usually.
Because the contact area of electrode is determining current density, also be one of factor that influences electric resistance welding welding quality, the resistivity of electrode material and thermal conductivity affect the generation of heat and scatter and disappear, and therefore, the shape of electrode and material are to the appreciable impact that is formed with of nugget.Along with the distortion and the wearing and tearing of electrode tip, contact area increases, and Joint Strength will reduce, and at this moment can adopt the method for above-mentioned increase Joint Strength.
Resistance welded method of quality control in the embodiment of the invention, by preestablishing the qualified required parameter area of welding quality, gather welding process parameter in real time, the comparison process parameter with parameter area is set, judge whether welding quality is qualified, find that unacceptable product in time sorts out, guarantee that the qualification rate of workpiece closes the symbol customer requirements, realization is carried out in real time welding process, effective On-line Control, control with analytical model afterwards and can't in time find quality problems and the defective of carrying out timely and effective control thereby overcome traditional welding quality, solved finish by welding after selective examination and destructive test confirm that the retardance that the quality controling mode of weldment quality causes wastes, low efficiency problem.Parameter and procedure parameter wherein are set comprise that current value, magnitude of voltage, pressure fall into value, press and fall into velocity amplitude, force value, change value of pressure, current density value etc., thereby set up Quality Control Model, make welding parameter remain on for a long time in system's range of control.
According to the resistance welded method of quality control of introducing previously, the embodiment of the invention also provides a kind of electric resistance welding welding quality control system, and with reference to figure 3, it comprises:
Regulation and control unit 70, the real-time parameter that is used for receiving feedback signals and adjusts welding process input are to the intermediate value of canonical parameter scope and extract corresponding product and be positioned over the substandard product zone.
Simultaneously with reference to figure 2, Fig. 3, wherein the acquired signal of parameter acquisition unit 80 and treatment conversion processing section are hardware systems such as the sensor that is attached to electric resistance welding equipment, AD modular converter, computer; This quality control system also comprises the software systems that are installed in the computer, these software systems are at the specifically developed software systems of the quality control of electric resistance welding process, and it is used to be provided with canonical parameter scope, comparison process parameter and canonical parameter, the decision process parameter compared and whether meets welding requirements, sends feedback signal control workpiece separating action and revise the welding process input parameter automatically when bad welding process occurring.
Further, described parameter set unit 50 comprises parameter storage unit, and it is used to store the quilt comparison parameter group of user's input, and the parameter of calling in comparison in this parameter group is compared with the parameter real time data of collection conversion in real time.In storage unit, can store a plurality of parameter group versions, select relevant parameters group version according to the needs of soldered material, workpiece in the actual welding process.
More preferably, parameter acquisition unit 80 further comprises the signal gathering unit that is used to gather the real-time parameter analog quantity and is used for that the real-time parameter analog quantity is converted to digital signal and transfers to the signal processing unit of software systems.Digital signal after the conversion is only the signal of software systems Direct Recognition, just can be used for after the Input Software system comparing with the canonical parameter scope.
Wherein above-mentioned regulation and control unit 70 can only be used for receiving feedback signals and adjust the intermediate value of the real-time parameter value of welding process input to the canonical parameter scope, only failed part is reported to the police, and waits for artificial treatment; Also can be only real-time parameter to be runawayed to do to report to the police to handle, and extract corresponding product and be positioned over the substandard product zone, wait for the artificial real-time parameter of adjusting.
Procedure parameter of mentioning among the present invention or process real-time parameter are exactly real-time parameter.Resistance welded also claims the electric resistance welding welding, and the real-time parameter of its welding process can comprise that electric current, weld interval, voltage, pressure fall into, press the speed of falling into, pressure, pressure variation, current density etc., can be one or more.Wherein most important procedure parameter is a welding current.
In the present invention, can select different welding standard parameter areas according to different welding processes, a plurality of comparable data groups are set, thereby set up expert database, this expert database also claims standard database.Can call one of them comparable data group before the welding as the comparison normative reference, also can be as required the parameter area of the comparable data group called be adjusted and form the comparable data group of resetting, a brand-new comparable data group also can be set and be stored in the standard database.
More preferably, described parameter set unit 50 comprises that the current standard parameter area is provided with unit 51, and described parameter acquisition unit 80 comprises the current sensing means 81 that is used to detect real-time welding current value.Current sensing means 81 comprises current sensor 21, signal processing module 31 and the data access port of data being imported PC, current sensor 21 is gathered the real-time current value and through signal Processing digital signal is passed to SPC system 98 again, calculates welding current value, weld interval by software systems.By monitoring and control, can tentatively obtain the good welding product of welding quality to current value.Wherein the SPC system is meant statisticsization processing procedure control system.
Wherein current sensor 21 comprises coil, and this coil is sheathed on an electrode 60, detects welding real-time current value.
Because also can be one of welding quality critical parameter weld interval, and current sensing means 81 also can detect weld interval, electric current time of passing through just, in software systems, increase and calculate program a weld interval and just can read process weld interval, therefore parameter set unit may further include weld interval canonical parameter scope unit (figure does not show) is set, by monitoring and control, can further guarantee the welding quality of welding product to weld interval.
More preferably, described parameter set unit 50 comprises that the voltage standard parameter area is provided with unit 52, described parameter acquisition unit 80 comprises current sensing means 82, and this current sensing means 82 comprises voltage sensor 22 and the voltage signal conversion equipment that is used to detect real-time welding voltage value.
The voltage that real-time welding voltage value is the electric capacity two ends is that digital signal sends PLC calculating electric capacity energising voltage again to by the analog signals collection of voltage sensor 22 through the AD module converts.By monitoring and control, can further guarantee the welding quality of welding product to real-time weldingvoltage.
More preferably, described parameter set unit 50 comprises that also press falling into the canonical parameter scope is provided with unit 53, and described parameter acquisition unit 80 also comprises the sunken pick-up unit 83 of pressure that the real-time pressure that is used to detect welding work pieces falls into value, and it comprises grating chi 23.Grating chi 23 is gathered the real-time height and position of welding process workpiece and electrode, by the height before the welding of high speed counting module 33 recording electrodes, after the welding, two values is subtracted each other to draw press sunken value; Again this press is fallen into value and the set canonical parameter scope judge welding quality of comparing.By real-time welding being pressed the monitoring and the control of the value of falling into, can further guarantee the welding quality of welding product.
More preferably, described parameter set unit 50 comprises that the pressure criteria parameter area is provided with unit 55, and described parameter acquisition unit 80 comprises the pressure-detecting device 85 that puts on the force value of workpiece when being used to detect welding, and pressure-detecting device 85 comprises pressure transducer 25.Testing process is the pressure medium of welding cylinder to be passed to PLC by pressure transducer 25 collection analog quantitys through AD module 35 calculate real-time welding pressure value.Welding pressure is the parameter that influences welding quality that is only second to welding current, and is significant for assurance welding product quality to its detection and control.AD module 35 is the signal conversion module that analog signals are converted to digital signal.
More preferably, described parameter set unit 50 can also comprise that press falling into the velocity standard parameter area is provided with unit 54, pressure running parameter scope and unit 56, current density parameter area is set in the unit 57 at least one is set.Fall into value/weld interval owing to press to fall into velocity amplitude=pressures, thus system acquisition can compare by the calculating of pressing sunken velocity amplitude on the basis of weld interval, thereby go to pass judgment on welding quality more accurately, control its welding quality better.Current density also is to detect the more intuitive parameter of welding quality, by the calculating of system, obtains current density with the ratio of electric current and electrode and the contact area of workpiece, thereby goes to monitor welding quality more intuitively.
With reference to figure 3, electric resistance welding welding quality control system of the present invention can further include product selecting unit 60, is used for the result of determination according to the comparison identifying unit, and real-time welding work pieces is classified.System is judged to be up-to-standard product and directly is sent to the finished product district, and it is that substandard product then is extracted out and is sent to the substandard products district then that system is judged to be product off quality.The finished product district is exactly the staging area of specification product, and the substandard products district is exactly the staging area of substandard product.
More preferably, described product selecting unit 60 comprise the control device of the product quality information that is used for the output of receiving software system, by this control device control and extract the automatic sorting device of corresponding substandard product to the waste product district.When the welding process input parameter does not meet index parameter and is the canonical parameter scope, software systems can give the alarm as required, send alerting signal simultaneously to control device, after the control device received signal, the control automatic sorting device is handled substandard product, and the real-time welding product of correspondence is extracted into the substandard products district.
Electric resistance welding welding quality control system of the present invention is provided with electric current by parameter set unit 50, voltage, press and fall into, press the speed of falling into, pressure, pressure changes, the isoparametric canonical parameter scope of current density, by the grating chi 23 in the parameter acquisition unit 80, pressure transducer 25 grades detect the current value of welding process in real time, magnitude of voltage, press the value of falling into, welding process parameters such as force value, perhaps use these software systems to calculate and press sunken velocity amplitude by above-mentioned real-time welding process parameter, change value of pressure, current density value, judge by the comparison identifying unit whether the quality of real-time welding work pieces is qualified again, if it is defective then send corresponding signal controlling product selecting mechanism 60 and substandard product is extracted sort out, thereby realized real-time welding Quality control, in time adjust the welding process parameter that does not meet the scope of setting according to the parameter of gathering in real time simultaneously, avoid handling the delay waste of product off quality afterwards.
More preferably, the present invention passes through to gather in real time welding data, the performance analysis workpiece quality, and all kinds of squiggles or use chart are at the real-time welding process state of the showing interface of software systems when showing welding, carry out SPC in real time and analyze, make things convenient for the file administration of welding work pieces.
The real-time quality control SPC of the research electric resistance welding system of the property of the present invention is directed to, system passes through the parameter that influences welding quality in the welding process such as electric current, voltage, the sunken value of pressure, presses the speed of falling into, pressure, pressure variation, the isoparametric collection of current density, according to expertise the quality of Resistance Welding process is analyzed and cluster, form welding process quality judging condition and be the fuzzy evaluation criterion of function, and judge with this whether welding quality is qualified with above-mentioned procedure parameter.Wherein the welding quality qualification determination is to carry out statistical study and set up Quality Control Model according to QS9000 quality control system welding parameters, and be the computer software that foundational development is realized above-mentioned quality control with this model, according to X-R figure, X-S figure welding parameter is remained in the controlled area charactert for a long time.Exceed controlled area charactert if connect parameter, system reports to the police automatically and whether the process capability of automatic judgment device satisfies production requirement, and the line item of going forward side by side is so that realize the total quality control thought of Continual Improvement.
System development expert data acquisition system, to the parameter that influences welding quality in the welding process such as electric current, voltage, pressure fall into value, press the speed of falling into, pressure, pressure variation, the isoparametric collection of current density, realization realizes real-time, effective On-line Control to welding process, set up the weld defects intelligent checking system, improve the solder technology intelligent level.
The design adopts Industrial PC as master control system, adopts the HR601 current system of independent research.
Above disclosed only is the preferred embodiments of the present invention, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of being done according to the present patent application claim still belongs to the scope that the present invention is contained.
Claims (10)
1, a kind of electric resistance welding welding method of quality control is characterized in that comprising the steps:
(1), the canonical parameter scope that reaches each required parameter of qualified welding quality is set;
(2), gather corresponding real-time parameter value in the welding process;
(3), comparison described real-time parameter value and described canonical parameter scope, judge that described real-time parameter value is whether in described canonical parameter scope;
(4) if described real-time parameter value is positioned at described canonical parameter scope, execution in step (2) then; If described real-time parameter value is not positioned at described canonical parameter scope, judge that the product of welding is defective in real time, and feedback signal is regulated and control the unit and is adjusted the intermediate value of the described real-time parameter value of welding process input to corresponding described canonical parameter scope, execution in step (2) to regulating and control the unit.
2, electric resistance welding welding method of quality control as claimed in claim 1 is characterized in that: in the described step (4), when described real-time parameter value is not positioned at described canonical parameter scope, then extract corresponding substandard product and be positioned over the substandard product zone.
3, electric resistance welding welding method of quality control as claimed in claim 1 is characterized in that: all corresponding current value, magnitude of voltage, the pressure of comprising of described standard parameter value and real-time parameter value falls into value, presses at least one that falls in velocity amplitude, force value, change value of pressure, the current density value.
4, a kind of electric resistance welding welding quality control system is characterized in that comprising:
Parameter set unit is used to be provided with the required canonical parameter scope of qualified welding quality that reaches;
Parameter acquisition unit is used to gather each corresponding real-time parameter value that welding process is imported;
The comparison identifying unit, be used to compare the described real-time parameter value of each welding process input and the described canonical parameter scope of corresponding setting, judge whether described real-time parameter value is positioned at described canonical parameter scope, whether the welding product of determining corresponding real-time parameter value is qualified, if defective then output feedback signal;
The regulation and control unit is used for receiving feedback signals and adjusts the intermediate value of the described real-time parameter of welding process input to corresponding canonical parameter scope.
5, electric resistance welding as claimed in claim 4 welding quality control system is characterized in that: parameter acquisition unit comprises and is used to gather the signal gathering unit of real-time parameter analog quantity and is used for that the real-time parameter analog quantity is converted to digital signal and transfers to the signal processing unit of software systems.
6, electric resistance welding as claimed in claim 4 welding quality control system is characterized in that: described parameter set unit comprises that the current standard parameter area is provided with unit, weld interval canonical parameter scope the unit is set; Described parameter acquisition unit comprises real-time welding current value and the current sensing means of weld interval that is used to detect by electrode.
7, electric resistance welding welding quality control system as claimed in claim 6, it is characterized in that: described current sensing means comprises current sensor, signal processing module and data is imported the data access port of described comparison identifying unit that described current sensor comprises the coil that is sheathed on described electrode.
8, electric resistance welding welding quality control system as claimed in claim 4, it is characterized in that: described parameter set unit comprises that also the voltage standard parameter area is provided with the unit; Described parameter acquisition unit also comprises the voltage check device that is used to detect real-time welding voltage value, this voltage check device comprise the welding cylinder that is arranged at bonding machine voltage sensor, connect the signal conversion module of this voltage sensor and described comparison identifying unit.
9, as claim 4 or 6 or 7 or 8 described electric resistance welding welding quality control systems, it is characterized in that: described parameter set unit comprises that also the sunken canonical parameter scope of pressure is provided with the unit and the pressure parameter scope is provided with the unit; Described parameter acquisition unit comprises that also the real-time pressure that is used to detect welding product falls into the grating chi of value and is used to detect the pressure transducer that puts on the product upward pressure when welding.
10, electric resistance welding welding quality control system as claimed in claim 3, it is characterized in that: also comprise result of determination the product selecting unit that real-time welding work pieces is classified that is used for according to the comparison identifying unit, described product selecting unit comprises the control device of the product quality information that is used for the received signal output unit, by this control device control and extract the automatic sorting device of corresponding substandard product to the waste product district.
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| CNA2008101986474A CN101364106A (en) | 2008-09-19 | 2008-09-19 | Welding quality control system and method for resistance welding |
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| CNA2008101986474A CN101364106A (en) | 2008-09-19 | 2008-09-19 | Welding quality control system and method for resistance welding |
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Cited By (24)
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| US20120091185A1 (en) * | 2010-10-18 | 2012-04-19 | Georgia Tech Research Corporation | In-process weld geometry methods & systems |
| CN102513676A (en) * | 2011-12-27 | 2012-06-27 | 柳州五菱汽车有限责任公司 | Automatic spot welding device |
| CN102581437A (en) * | 2011-08-24 | 2012-07-18 | 唐山松下产业机器有限公司 | Welder, system and method capable of managing welding operation |
| WO2013159704A1 (en) * | 2012-04-27 | 2013-10-31 | 深圳深蓝精机有限公司 | Welding detection device and automatic welding machine |
| CN103551752A (en) * | 2013-10-29 | 2014-02-05 | 南京南车浦镇城轨车辆有限责任公司 | Intelligent aluminum alloy welding system for high-speed train |
| CN103760836A (en) * | 2013-09-29 | 2014-04-30 | 中核北方核燃料元件有限公司 | Pressurized-water-reactor nuclear-fuel element-factory fuel-rod transmission-line data acquisition system and method |
| CN104907746A (en) * | 2015-06-11 | 2015-09-16 | 唐山松下产业机器有限公司 | Robot welding system and welding quality detecting method thereof |
| CN105184517A (en) * | 2015-10-23 | 2015-12-23 | 常州威远电工器材有限公司 | Winding wire quality detection and intelligentized management system |
| CN105312756A (en) * | 2014-07-12 | 2016-02-10 | 武汉科技大学 | Inverter resistance welding parameter error prediction quality control method |
| CN105345247A (en) * | 2015-11-19 | 2016-02-24 | 广州亨龙智能装备股份有限公司 | On-line monitoring system for welding quality of electric resistance welding machine |
| CN106670621A (en) * | 2016-12-27 | 2017-05-17 | 广西汽车集团有限公司 | Setting method and device for welding parameters |
| CN108241009A (en) * | 2018-01-12 | 2018-07-03 | 陈彪 | A kind of pad welding quality detection method and its detection device |
| CN109093240A (en) * | 2018-10-31 | 2018-12-28 | 中正智控（江苏）智能科技有限公司 | Medium frequency inverter direct current welding quality monitoring method and monitoring system |
| CN109447403A (en) * | 2018-09-20 | 2019-03-08 | 中国核工业二三建设有限公司 | A kind of welding defect analysis system and method based on big data |
| CN109623143A (en) * | 2019-01-11 | 2019-04-16 | 东莞塔菲尔新能源科技有限公司 | A kind of on-line monitoring device and monitoring method for battery laser welding |
| CN110039556A (en) * | 2019-05-04 | 2019-07-23 | 北京鲲鹏神通科技有限公司 | A kind of unmanned sale thin pancake robot control system |
| CN110769962A (en) * | 2017-04-18 | 2020-02-07 | 伊利诺斯工具制品有限公司 | Systems, methods, and apparatus for providing preheat voltage feedback loss protection |
| CN110871313A (en) * | 2018-09-03 | 2020-03-10 | 苏州睿牛机器人技术有限公司 | Control method and device for crawling arc welding robot |
| CN110899902A (en) * | 2019-12-06 | 2020-03-24 | 唐山松下产业机器有限公司 | Welding machine current control method and device and welding machine |
| CN111203628A (en) * | 2018-11-21 | 2020-05-29 | 无锡先导智能装备股份有限公司 | Welding detection method and welding equipment |
| CN111665796A (en) * | 2020-05-08 | 2020-09-15 | 上海市公安局出入境管理局 | Environmental parameter adjusting method and device for certificate making workshop |
| CN114769827A (en) * | 2022-05-06 | 2022-07-22 | 合肥至信机械制造有限公司 | System for optimizing welding of electrode cap |
| CN115365622A (en) * | 2021-05-18 | 2022-11-22 | 丰田自动车株式会社 | Arc stud welding device and arc stud welding method |
| WO2023063919A3 (en) * | 2023-01-20 | 2023-11-09 | Albaksan Diş Ticaret Ve Pazarlama A.Ş. | Resistance welding machines data monitoring and reporting system |
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2008
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Cited By (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120091185A1 (en) * | 2010-10-18 | 2012-04-19 | Georgia Tech Research Corporation | In-process weld geometry methods & systems |
| CN102581437A (en) * | 2011-08-24 | 2012-07-18 | 唐山松下产业机器有限公司 | Welder, system and method capable of managing welding operation |
| CN102513676A (en) * | 2011-12-27 | 2012-06-27 | 柳州五菱汽车有限责任公司 | Automatic spot welding device |
| CN102513676B (en) * | 2011-12-27 | 2015-04-22 | 柳州五菱汽车有限责任公司 | Automatic spot welding device |
| WO2013159704A1 (en) * | 2012-04-27 | 2013-10-31 | 深圳深蓝精机有限公司 | Welding detection device and automatic welding machine |
| CN103760836A (en) * | 2013-09-29 | 2014-04-30 | 中核北方核燃料元件有限公司 | Pressurized-water-reactor nuclear-fuel element-factory fuel-rod transmission-line data acquisition system and method |
| CN103551752A (en) * | 2013-10-29 | 2014-02-05 | 南京南车浦镇城轨车辆有限责任公司 | Intelligent aluminum alloy welding system for high-speed train |
| CN105312756A (en) * | 2014-07-12 | 2016-02-10 | 武汉科技大学 | Inverter resistance welding parameter error prediction quality control method |
| CN104907746A (en) * | 2015-06-11 | 2015-09-16 | 唐山松下产业机器有限公司 | Robot welding system and welding quality detecting method thereof |
| CN105184517A (en) * | 2015-10-23 | 2015-12-23 | 常州威远电工器材有限公司 | Winding wire quality detection and intelligentized management system |
| CN105345247A (en) * | 2015-11-19 | 2016-02-24 | 广州亨龙智能装备股份有限公司 | On-line monitoring system for welding quality of electric resistance welding machine |
| CN106670621A (en) * | 2016-12-27 | 2017-05-17 | 广西汽车集团有限公司 | Setting method and device for welding parameters |
| CN110769962A (en) * | 2017-04-18 | 2020-02-07 | 伊利诺斯工具制品有限公司 | Systems, methods, and apparatus for providing preheat voltage feedback loss protection |
| US11911859B2 (en) | 2017-04-18 | 2024-02-27 | Illinois Tool Works Inc. | Systems, methods, and apparatus to provide preheat voltage feedback loss protection |
| CN108241009A (en) * | 2018-01-12 | 2018-07-03 | 陈彪 | A kind of pad welding quality detection method and its detection device |
| CN108241009B (en) * | 2018-01-12 | 2024-05-10 | 陈彪 | Welding quality detection method and detection device for welding point |
| CN110871313A (en) * | 2018-09-03 | 2020-03-10 | 苏州睿牛机器人技术有限公司 | Control method and device for crawling arc welding robot |
| CN109447403A (en) * | 2018-09-20 | 2019-03-08 | 中国核工业二三建设有限公司 | A kind of welding defect analysis system and method based on big data |
| CN109093240A (en) * | 2018-10-31 | 2018-12-28 | 中正智控（江苏）智能科技有限公司 | Medium frequency inverter direct current welding quality monitoring method and monitoring system |
| CN111203628A (en) * | 2018-11-21 | 2020-05-29 | 无锡先导智能装备股份有限公司 | Welding detection method and welding equipment |
| CN109623143A (en) * | 2019-01-11 | 2019-04-16 | 东莞塔菲尔新能源科技有限公司 | A kind of on-line monitoring device and monitoring method for battery laser welding |
| CN110039556A (en) * | 2019-05-04 | 2019-07-23 | 北京鲲鹏神通科技有限公司 | A kind of unmanned sale thin pancake robot control system |
| CN110899902A (en) * | 2019-12-06 | 2020-03-24 | 唐山松下产业机器有限公司 | Welding machine current control method and device and welding machine |
| CN110899902B (en) * | 2019-12-06 | 2022-02-15 | 唐山松下产业机器有限公司 | Welding machine current control method and device and welding machine |
| CN111665796A (en) * | 2020-05-08 | 2020-09-15 | 上海市公安局出入境管理局 | Environmental parameter adjusting method and device for certificate making workshop |
| CN111665796B (en) * | 2020-05-08 | 2024-04-26 | 上海市公安局出入境管理局 | Environmental parameter adjusting method and device for certificate making workshop |
| CN115365622A (en) * | 2021-05-18 | 2022-11-22 | 丰田自动车株式会社 | Arc stud welding device and arc stud welding method |
| CN115365622B (en) * | 2021-05-18 | 2024-04-30 | 丰田自动车株式会社 | Arc stud welding device |
| CN114769827B (en) * | 2022-05-06 | 2024-01-30 | 合肥至信机械制造有限公司 | System for optimizing welding of electrode caps |
| CN114769827A (en) * | 2022-05-06 | 2022-07-22 | 合肥至信机械制造有限公司 | System for optimizing welding of electrode cap |
| WO2023063919A3 (en) * | 2023-01-20 | 2023-11-09 | Albaksan Diş Ticaret Ve Pazarlama A.Ş. | Resistance welding machines data monitoring and reporting system |
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Application publication date: 20090211 |