CN109590578B - Burn-back energy matching control method for digital welding machine - Google Patents
Burn-back energy matching control method for digital welding machine Download PDFInfo
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- CN109590578B CN109590578B CN201811644618.6A CN201811644618A CN109590578B CN 109590578 B CN109590578 B CN 109590578B CN 201811644618 A CN201811644618 A CN 201811644618A CN 109590578 B CN109590578 B CN 109590578B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/124—Circuits or methods for feeding welding wire
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/095—Monitoring or automatic control of welding parameters
- B23K9/0953—Monitoring or automatic control of welding parameters using computing means
Abstract
The present disclosure provides a burn-back energy matching control method for a digital welder. The burn-back energy matching control method for the digital welding machine mainly comprises the following steps: acquiring a wire feeding speed function and the diameter of a welding wire; determining a virtual wire feeding speed function according to the wire feeding speed function and the wire diameter, wherein when the wire diameter is larger than or equal to a preset value, the function value of the virtual wire feeding speed function is larger than or equal to the function value of the wire feeding speed function, and when the wire diameter is smaller than the preset value, the function value of the virtual wire feeding speed function is smaller than or equal to the function value of the wire feeding speed function; and responding to a welding gun switch loosening signal, controlling the wire feeding speed according to the wire feeding speed function, and controlling the welding parameters matched with the welding current according to the virtual wire feeding speed function. The burn-back energy matching control method for the digital welding machine can effectively improve the welding quality.
Description
Technical Field
The disclosure relates to the technical field of arc welding, in particular to a burn-back energy matching control method for a digital welding machine, which can adjust welding energy according to the diameter of a welding wire.
Background
Welding is widely used as a common connection mode in the fields of boilers, pressure vessels, ships, bridges, wind turbine towers, oil and natural gas pipelines and the like. There are various welding methods in industry, such as metal arc welding (mAW), carbon dioxide gas arc welding (GMAW), carbon dioxide flux cored gas arc welding (FCAW), Submerged Arc Welding (SAW), Shielded Metal Arc Welding (SMAW), and Gas Tungsten Arc Welding (GTAW).
In the related art, there is often a problem of welding quality due to a mismatch of welding energy and a diameter of a welding wire. For example, too low energy in the strand re-firing stage results in too short an arc in the re-firing stage, resulting in increased weld spatter, and high energy in the strand re-firing stage results in too long an arc, resulting in poor formation due to drift of the arc. Therefore, a method for controlling the burn-back of the welding machine capable of obtaining a better welding effect is required.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
An object of the present disclosure is to provide a burn-back energy matching control method for a digital welder and a digital welder for overcoming, at least to some extent, the problem of poor welding quality due to the limitations and disadvantages of the related art.
According to a first aspect of the embodiments of the present disclosure, there is provided a burn-back energy matching control method for a digital welder, including:
acquiring a wire feeding speed function and the diameter of a welding wire;
determining a virtual wire feeding speed function according to the wire feeding speed function and the wire diameter, wherein when the wire diameter is larger than or equal to a preset value, the function value of the virtual wire feeding speed function is larger than or equal to the function value of the wire feeding speed function, and when the wire diameter is smaller than the preset value, the function value of the virtual wire feeding speed function is smaller than or equal to the function value of the wire feeding speed function;
and responding to a welding gun switch loosening signal, controlling the wire feeding speed according to the wire feeding speed function, and controlling the welding parameters matched with the welding current according to the virtual wire feeding speed function.
In an exemplary embodiment of the present disclosure, the wire feed speed function is a linear function.
In an exemplary embodiment of the present disclosure, said determining a virtual wire feed speed function from said wire feed speed function and said wire diameter comprises:
determining an initial wire feeding speed, a braking speed and a first acceleration function of decreasing the wire feeding speed to the braking speed according to the wire feeding speed function;
determining a second acceleration function from the wire diameter and the first acceleration function;
determining the virtual wire feed speed function according to the initial wire feed speed, the brake speed, and the second acceleration function.
In an exemplary embodiment of the present disclosure, determining a second acceleration function from the wire diameter and the first acceleration function comprises:
when the diameter of the welding wire is larger than a preset value, determining that the second acceleration function is a monotone decreasing function;
and when the diameter of the welding wire is smaller than the preset value, determining that the second acceleration function is a monotone increasing function.
In an exemplary embodiment of the present disclosure, the virtual wire feed speed function is determined according to the following formula:
wherein W is the virtual wire feeding speed, Vz, V0Respectively, a braking speed and an initial wire feeding speed determined according to the wire feeding speed function, n is the updating time of a control parameter, and k (d) is an adjusting parameter related to the diameter d of the welding wire.
In an exemplary embodiment of the present disclosure, said determining a virtual wire feed speed function from said wire feed speed function and said wire diameter comprises:
obtaining a preset point through which the virtual wire feeding speed function passes according to the diameter of the welding wire;
and determining the virtual wire feeding speed function according to the preset point.
In an exemplary embodiment of the present disclosure, the tuning parameter is in a discrete relationship with the wire diameter.
According to a second aspect of the present disclosure, there is provided a burn-back energy matching control apparatus for a digital welder, comprising:
acquiring a wire feeding speed function and the diameter of a welding wire;
determining a virtual wire feeding speed function according to the wire feeding speed function and the wire diameter, wherein when the wire diameter is larger than or equal to a preset value, the function value of the virtual wire feeding speed function is larger than or equal to the function value of the wire feeding speed function, and when the wire diameter is smaller than the preset value, the function value of the virtual wire feeding speed function is smaller than or equal to the function value of the wire feeding speed function;
and responding to a welding gun switch loosening signal, controlling the wire feeding speed according to the wire feeding speed function, and controlling the welding parameters matched with the welding current according to the virtual wire feeding speed function.
According to a third aspect of the present disclosure, there is provided a digital welder comprising:
a welding execution module;
a parameter input module;
the memory is coupled to the parameter input module and used for receiving the parameters input by the parameter input module; and
a processor coupled to the weld execution module and the memory, the processor configured to execute in exemplary embodiments of the present disclosure to control the weld execution module to perform a burn-back action based on instructions and parameters stored in the memory.
According to a fourth aspect of the present disclosure, there is provided a computer-readable storage medium having stored thereon a program which, when executed by a processor, implements the exemplary embodiments of the present disclosure.
According to the control method provided by the embodiment of the disclosure, the virtual wire feeding speed is used for controlling the welding parameters matched with the welding current, the welding energy output can be flexibly adjusted according to the diameter of the welding wire, and the influence of the burner phenomenon caused by too short electric arc, large welding spatter and too long electric arc due to low burn-back energy on the next arc striking success rate is avoided.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
FIG. 1 is a flow chart of a burn-back energy matching control method for a digital welder in an exemplary embodiment of the present disclosure.
FIG. 2 is a graphical illustration of a wire feed speed function in an exemplary embodiment of the disclosure.
FIG. 3 is a sub-flowchart for determining a virtual wire feed speed function in an embodiment of the present disclosure.
Fig. 4A-4D are schematic diagrams of virtual wire feed speed functions in exemplary embodiments of the present disclosure.
FIGS. 5A and 5B are schematic diagrams of another virtual wire feed function in an exemplary embodiment of the present disclosure.
FIG. 6 is a block diagram of a burn-back energy matching control for a digital welder in an exemplary embodiment of the present disclosure.
FIG. 7 is a block diagram of a digital welder in an exemplary embodiment of the present disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and the like. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure.
Further, the drawings are merely schematic illustrations of the present disclosure, in which the same reference numerals denote the same or similar parts, and thus, a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
The following detailed description of exemplary embodiments of the disclosure refers to the accompanying drawings.
FIG. 1 schematically illustrates a flow chart of a burn-back energy matching control method for a digital welder in an exemplary embodiment of the disclosure. Referring to FIG. 1, a burn-back energy matching control method 100 for a digital welder may include:
step S102, obtaining a wire feeding speed function and the diameter of a welding wire;
step S104, determining a virtual wire feeding speed function according to the wire feeding speed function and the wire diameter, wherein when the wire diameter is larger than or equal to a preset value, the function value of the virtual wire feeding speed function is larger than or equal to the function value of the wire feeding speed function, and when the wire diameter is smaller than the preset value, the function value of the virtual wire feeding speed function is smaller than or equal to the function value of the wire feeding speed function;
and S106, responding to a welding gun switch loosening signal, controlling the wire feeding speed according to the wire feeding speed function, and controlling the welding parameters matched with the welding current according to the virtual wire feeding speed function.
According to the control method provided by the embodiment of the disclosure, the virtual wire feeding speed is used for controlling the welding parameters of the welding current, the welding energy output can be flexibly adjusted according to the diameter of the welding wire, and the influence of the burner phenomenon caused by too short electric arc, large welding spatter and too long electric arc due to low burn-back energy on the next arc striking success rate is avoided. The steps of the burn-back energy matching control method 100 for a digital welder are described in detail below.
In step S102, a wire feed speed function and a wire diameter are obtained.
The wire feed speed function may be entered by the welder operator through a parameter input module of the welder or default to the system. In some embodiments, the wire feed speed function is a linear function with a constant slope.
FIG. 2 is a graphical representation of a wire feed speed function.
Referring to fig. 2, at a first time T1, the wire feed speed is decreased from the initial wire feed speed V0 to the braking speed Vz at a second time T2. A first acceleration function, which is a constant function, may be derived from the wire feed speed function, and the wire feed speed function V and the first acceleration function f are expressed by the following equations:
V(T)＝f*T+b (1)
f＝a (2)
wherein, a and b are constants, and those skilled in the art can set the values according to actual conditions.
The diameter of the welding wire can be obtained through machine detection, and can also be obtained through setting data uploaded manually, and the disclosure is not limited to the method.
In step S104, a virtual wire feed speed function is determined from the wire feed speed function and the wire diameter.
In order to adjust the welding energy according to the diameter of the welding wire, the embodiment of the disclosure uses the virtual wire feeding speed to control the welding parameters of the welding current, that is, the energy output of the control welding current has a certain difference value with the actual wire feeding speed, so as to achieve a better welding effect.
When the diameter of the welding wire is larger than or equal to the preset value, the function value of the virtual wire feeding speed function is larger than or equal to the function value of the wire feeding speed function, and when the diameter of the welding wire is smaller than the preset value, the function value of the virtual wire feeding speed function is smaller than or equal to the function value of the wire feeding speed function.
Illustratively, when the diameter of the welding wire is larger than the preset value, the virtual wire feeding speed can be controlled to change from slow to fast through the virtual wire feeding speed function. The welding current is controlled to output larger energy at the front section time when the wire feeding speed begins to change, the actual wire feeding speed (large heat input and slow wire feeding) which is relatively slow in virtual wire feeding speed is matched, the thick welding wire can be rapidly melted, the problems that electric arcs are short, splashing is increased, welding seams are poor in forming and the like are avoided, the thick welding wire is prevented from being stuck, and the welding efficiency of the thick welding wire is effectively improved.
And correspondingly, when the diameter of the welding wire is smaller than the preset value, the virtual wire feeding speed can be controlled to change from high to low. The welding current is controlled to output smaller energy in the front period when the wire feeding speed begins to change, the actual wire feeding speed (small heat input and high wire feeding speed) which is higher than the virtual wire feeding speed is matched, and the problems that the electric arc is too long in the burn-back stage, the electric arc floats, the burn-back length is too long, even the burner further influences the secondary arc ignition and the like are effectively avoided.
The preset value for judging the thickness of the welding wire can be set according to the actual situation, and the disclosure is not limited to this.
FIG. 3 is a method of determining a virtual wire feed function in an embodiment of the present disclosure.
Referring to fig. 3, step S104 may include:
step S1041, determining an initial wire feeding speed, a braking speed and a first acceleration function of decreasing the wire feeding speed to the braking speed according to the wire feeding speed function;
step S1042, determining a second acceleration function according to the diameter of the welding wire and the first acceleration function;
step S1043, determining a virtual wire feeding speed function according to the initial wire feeding speed, the braking speed, and the second acceleration function.
Fig. 4A and 4B are schematic diagrams of virtual wire feed speed functions.
Referring to fig. 4A, when the wire diameter D is greater than the preset value, the slope of the virtual wire feed speed function W, i.e., the function value of the second acceleration function, decreases with time and the absolute value increases.
Referring to fig. 4B, when the wire diameter D is smaller than the preset value, the slope of the virtual wire feed speed function W, i.e., the function value of the second acceleration function, increases with time, and the absolute value decreases.
To determine the expression of the virtual wire feed speed function W, in addition to determining the form of the inspired speed point a (T1, V0), the stop speed point B (T2, Vz) and the second acceleration function g that the virtual wire feed speed function passes through, the apex position C (T3, V3) of the virtual wire feed speed function W needs to be determined.
The abscissa T3 of the vertex position C, i.e. the moment when the function value of the second acceleration function is equal to the function value of the first acceleration function, may be first determined from user-specified parameters or system recommended parameters. The length of segment D in fig. 4C and 4D at time T3 is then determined from the wire diameter D to determine the absolute value m of the difference between the virtual wire feed speed function W and the function value of the wire feed function V, and thus the ordinate V3 of the apex C. In this process, h may be determined according to a preset monotonically increasing function h (d), i.e., m ═ h (d). The form and parameters of the function h (d) can be adjusted by those skilled in the art, and the present disclosure is not limited thereto.
Thus, when the second acceleration function is a linear function, the following formula is satisfied:
W’＝g＝αT+β (3)
g(T3)＝a (4)
W(T1)＝V(T1)＝V0 (5)
W(T2)＝V(T2)＝Vz (6)
W(T3)＝V(T3)+h(D) (7)
wherein alpha and beta are constants, a, V (T), T1, V0, T2 and Vz can be obtained according to the wire feeding speed function V, and T3 and T D, h (D) are manually input and selected by a user or automatically detected and recommended by a system. And (5) comprehensively calculating formulas (3) to (7) to obtain an expression of the virtual wire feeding speed function W.
The above is a calculation process in one embodiment of the present disclosure, and when the second acceleration function is not a linear function, a person skilled in the art may also determine the expression of the virtual wire feed speed function W according to the form and parameters of the second acceleration function set by the person skilled in the art.
In another embodiment of the present disclosure, the virtual wire feed speed may also be the following equation:
wherein W is a virtual wire feed speed, Vz、V0Respectively, a brake speed and an initial wire feeding speed determined according to the wire feeding speed function, n is the updating times of a control parameter, and k (d) is an adjusting parameter related to the diameter d of the welding wire, wherein the adjusting parameter includes but is not limited to a continuous function and a discrete function. For example, the adjustment parameter is a discrete function, where k (d1) ═ k1, k (d2) ═ k2, and the like, where d1 and d2 are preset wire diameters, and k1 and k2 are k values corresponding to the preset wire diameters. The method can receive a setting signal selected by a user from various preset welding wire diameters, and further determine the k value according to the corresponding relation.
FIGS. 5A and 5B are schematic diagrams of virtual wire feed functions in another embodiment of the present disclosure.
Referring to fig. 5A and 5B, the slope of the virtual wire feed function may be a discrete value in addition to a continuously varying value. At this time, a preset point (point D, E in fig. 5A and 5B) through which the virtual wire feed speed function passes may be obtained from the wire diameter, and the virtual wire feed speed function is determined from the preset point.
The preset point may be set by the user or defaulted by the system, or the system may generate a recommended value based on the wire diameter and allow the user to modify the recommended value. Furthermore, the disclosed embodiments do not limit the number and coordinates of the preset points.
In step S106, the welding torch switch release signal is responded, the wire feed speed is controlled according to the wire feed speed function, and the welding parameters of the welding current are controlled according to the virtual wire feed speed function.
When the diameter of the welding wire is larger than the preset value, the virtual wire feeding speed is larger than the actual wire feeding speed, the welding current energy output according to the virtual wire feeding speed can timely melt the coarse welding wire with the lower speed, the problems of too short electric arc, increased splashing and the like are avoided, and the ideal burn-back height can be adjusted for the coarse welding wire.
When the diameter of the welding wire is smaller than the preset value, the virtual wire feeding speed is smaller than the actual wire feeding speed, and when the welding current output according to the virtual wire feeding speed melts the thin welding wire with higher melting speed, the problems that the electric arc is too long and even the contact tip is burnt and the like can be avoided, and the ideal burn-back height can be adjusted for the thin diameter wire.
By the method, the problems of poor welding quality such as too short electric arc in the burn-back stage caused by too low energy in the burn-back stage of the thick wire, increased welding spatter even wire sticking caused by too long electric arc in the burn-back stage of the thin wire, air holes, incomplete fusion and undercut caused by too high energy in the burn-back stage of the thin wire can be effectively solved, and the welding quality and the welding efficiency are effectively improved.
Corresponding to the method embodiment, the present disclosure also provides a burn-back energy matching control device for a digital welding machine, which can be used for executing the method embodiment.
FIG. 6 schematically illustrates a block diagram of a burn-back energy matching control for a digital welder in an exemplary embodiment of the present disclosure.
Referring to fig. 6, a burn-back energy matching control apparatus 600 for a digital welder may include:
a data acquisition module 602 configured to acquire a wire feed speed function and a wire diameter;
a function determining module 604 configured to determine a virtual wire feeding speed function according to the wire feeding speed function and the wire diameter, wherein when the wire diameter is greater than or equal to a preset value, a function value of the virtual wire feeding speed function is greater than or equal to a function value of the wire feeding speed function, and when the wire diameter is less than the preset value, the function value of the virtual wire feeding speed function is less than or equal to a function value of the wire feeding speed function;
a control module 606 configured to control the wire feed speed according to the wire feed speed function in response to a torch switch release signal, and to control a welding parameter matching the welding current according to the virtual wire feed speed function.
In an exemplary embodiment of the present disclosure, the wire feed speed function is a linear function.
In an exemplary embodiment of the disclosure, the function determination module 606 is configured to:
determining an initial wire feeding speed, a braking speed and a first acceleration function of decreasing the wire feeding speed to the braking speed according to the wire feeding speed function;
determining a second acceleration function from the wire diameter and the first acceleration function;
determining the virtual wire feed speed function according to the initial wire feed speed, the brake speed, and the second acceleration function.
In an exemplary embodiment of the disclosure, the function determination module 606 is configured to:
when the diameter of the welding wire is larger than a preset value, determining that the second acceleration function is a monotone decreasing function;
and when the diameter of the welding wire is smaller than the preset value, determining that the second acceleration function is a monotone increasing function.
In an exemplary embodiment of the present disclosure, the function determination module 606 is configured to determine the virtual wire feed speed function according to the following formula:
wherein W is the virtual wire feeding speed, Vz, V0Respectively, a braking speed and an initial wire feeding speed determined according to the wire feeding speed function, n is the updating time of a control parameter, and k (d) is an adjusting parameter related to the diameter d of the welding wire.
In an exemplary embodiment of the disclosure, the function determination module 606 is configured to:
obtaining a preset point through which the virtual wire feeding speed function passes according to the diameter of the welding wire;
and determining the virtual wire feeding speed function according to the preset point.
In an exemplary embodiment of the present disclosure, the tuning parameter is in a discrete relationship with the wire diameter.
Since the functions of the apparatus 600 have been described in detail in the corresponding method embodiments, the disclosure is not repeated herein.
It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.
In an exemplary embodiment of the present disclosure, there is also provided a digital welder capable of implementing the above method.
As will be appreciated by one skilled in the art, aspects of the present invention may be embodied as a system, method or program product. Thus, various aspects of the invention may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.
FIG. 7 is a schematic diagram of a digital welder provided by an embodiment of the disclosure.
Referring to fig. 7, a digital welder 700 may include:
a welding execution module 71;
a parameter input module 72;
a memory 73 coupled to the parameter input module for receiving the parameter input by the parameter input module; and
a processor 74 coupled to the weld execution module and the memory, the processor configured to execute the burn-back energy matching control method 100 for a digital welder as described above based on instructions and parameters stored in the memory to control the weld execution module to perform the burn-back action.
The welding execution module 71 may include a wire feeding unit 711 and a pulse output unit 712, for controlling the execution of the wire feeding according to the wire feeding speed in response to instructions from the processor 74, and generating an electrical pulse between the wire and the weld according to the current pulse parameters.
In an exemplary embodiment of the present disclosure, there is also provided a computer-readable storage medium having stored thereon a program product capable of implementing the above-described method of the present specification. In some possible embodiments, aspects of the invention may also be implemented in the form of a program product comprising program code means for causing a terminal device to carry out the steps according to various exemplary embodiments of the invention described in the above section "exemplary methods" of the present description, when said program product is run on the terminal device.
The program product may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited in this regard and, in the present document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
A computer readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).
Furthermore, the above-described figures are merely schematic illustrations of processes involved in methods according to exemplary embodiments of the invention, and are not intended to be limiting. It will be readily understood that the processes shown in the above figures are not intended to indicate or limit the chronological order of the processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, e.g., in multiple modules.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (10)
1. A burn-back energy matching control method for a digital welding machine is characterized by comprising the following steps:
acquiring a wire feeding speed function and the diameter of a welding wire;
determining a virtual wire feeding speed function according to the wire feeding speed function and the wire diameter, wherein when the wire diameter is larger than or equal to a preset value, the function value of the virtual wire feeding speed function is larger than or equal to the function value of the wire feeding speed function, and when the wire diameter is smaller than the preset value, the function value of the virtual wire feeding speed function is smaller than or equal to the function value of the wire feeding speed function;
and responding to a welding gun switch loosening signal, controlling the wire feeding speed according to the wire feeding speed function, and controlling the welding parameters matched with the welding current according to the virtual wire feeding speed function.
2. The method of match control of burn-back energy for a digital welder of claim 1, wherein the wire feed speed function is a linear function.
3. The burn-back energy matching control method for a digital welder of claim 1 or 2, wherein the determining a virtual wire feed speed function from the wire feed speed function and the wire diameter comprises:
determining an initial wire feeding speed, a braking speed and a first acceleration function of decreasing the wire feeding speed to the braking speed according to the wire feeding speed function;
determining a second acceleration function from the wire diameter and the first acceleration function;
determining the virtual wire feed speed function according to the initial wire feed speed, the brake speed, and the second acceleration function.
4. The burn-back energy matching control method for a digital welder of claim 3, wherein determining a second acceleration function from the wire diameter and the first acceleration function comprises:
when the diameter of the welding wire is larger than a preset value, determining that the second acceleration function is a monotone decreasing function;
and when the diameter of the welding wire is smaller than the preset value, determining that the second acceleration function is a monotone increasing function.
5. The burn-back energy matching control method for a digital welder of claim 2, wherein the virtual wire feed speed function is determined according to the following equation:
wherein W is the virtual wire feeding speed, Vz, V0Respectively, a braking speed and an initial wire feeding speed determined according to the wire feeding speed function, n is the updating time of a control parameter, and k (d) is an adjusting parameter related to the diameter d of the welding wire.
6. The burn-back energy matching control method for a digital welder of claim 1 or 2, wherein the determining a virtual wire feed speed function from the wire feed speed function and the wire diameter comprises:
obtaining a preset point through which the virtual wire feeding speed function passes according to the diameter of the welding wire;
and determining the virtual wire feeding speed function according to the preset point.
7. The method of match control of burn-back energy for a digital welder of claim 5, wherein said tuning parameter is a discrete relationship with said wire diameter.
8. A burn-back energy matching control for a digital welder, comprising:
the data acquisition module is set to acquire a wire feeding speed function and the diameter of the welding wire;
the function determining module is used for determining a virtual wire feeding speed function according to the wire feeding speed function and the wire diameter, wherein when the wire diameter is larger than or equal to a preset value, the function value of the virtual wire feeding speed function is larger than or equal to the function value of the wire feeding speed function, and when the wire diameter is smaller than the preset value, the function value of the virtual wire feeding speed function is smaller than or equal to the function value of the wire feeding speed function;
the control module is used for responding to a welding gun switch loosening signal, controlling the wire feeding speed according to the wire feeding speed function, and controlling the welding parameters matched with the welding current according to the virtual wire feeding speed function;
wherein the function determination module is configured to:
determining an initial wire feeding speed, a braking speed and a first acceleration function of decreasing the wire feeding speed to the braking speed according to the wire feeding speed function;
determining a second acceleration function from the wire diameter and the first acceleration function;
determining the virtual wire feed speed function according to the initial wire feed speed, the brake speed and the second acceleration function;
the control module is configured to:
and determining the welding current energy output corresponding to the virtual wire feeding speed according to the virtual wire feeding speed function.
9. A digital welding machine, comprising:
a welding execution module;
a parameter input module;
the memory is coupled to the parameter input module and used for receiving the parameters input by the parameter input module; and
a processor coupled to the weld execution module and the memory, the processor configured to execute the burn-back energy matching control method for a digital welder of any of claims 1-7 to control the weld execution module to perform a burn-back action based on instructions and parameters stored in the memory.
10. A computer-readable storage medium having stored thereon a program which, when executed by a processor, implements the burn-back energy matching control method for a digital welder according to any one of claims 1-7.
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| CN111872514B (en) * | 2020-07-24 | 2022-06-17 | 唐山松下产业机器有限公司 | Burn-back control method for digital welding machine and related equipment |
| CN113751877B (en) * | 2021-06-28 | 2022-06-10 | 燕山大学 | Multi-wire synchronous additive manufacturing method for laser-induced arc oscillation |
| CN114114895B (en) * | 2021-12-22 | 2024-01-30 | 北京国控天成科技有限公司 | Automatic control method and system applied to petrochemical industry field |
| CN114769817A (en) * | 2022-05-24 | 2022-07-22 | 深圳市佳士科技股份有限公司 | Submerged arc welding control method, device, equipment and storage medium |
| CN115041769A (en) * | 2022-07-27 | 2022-09-13 | 深圳市佳士科技股份有限公司 | Welding equipment control method and device, electronic equipment and storage medium |
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| CN101239414A (en) * | 2007-02-07 | 2008-08-13 | 王金 | Gas shielded arc welding method for improving electrical arc self-regulation performance and preventing welding stick from burning back |
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