CN116532785A - Handheld laser welding system, welding method and galvanometer control method - Google Patents

Handheld laser welding system, welding method and galvanometer control method Download PDF

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Publication number
CN116532785A
CN116532785A CN202310579081.4A CN202310579081A CN116532785A CN 116532785 A CN116532785 A CN 116532785A CN 202310579081 A CN202310579081 A CN 202310579081A CN 116532785 A CN116532785 A CN 116532785A
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CN
China
Prior art keywords
subunit
control
signal
galvanometer
laser
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Pending
Application number
CN202310579081.4A
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Chinese (zh)
Inventor
蒋峰
邓金荣
陈尚
李立恒
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Shenzhen Huanri Laser Co ltd
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Shenzhen Huanri Laser Co ltd
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Priority to CN202310579081.4A priority Critical patent/CN116532785A/en
Publication of CN116532785A publication Critical patent/CN116532785A/en
Pending legal-status Critical Current

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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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/0096—Portable laser equipment, e.g. hand-held laser apparatus
    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70—Auxiliary operations or equipment
    • B23K26/702—Auxiliary equipment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

The application discloses handheld laser welding system, welding method and galvanometer control method, handheld laser welding system includes laser instrument and welder, be provided with galvanometer motor and control module in the welder, control module control galvanometer motor swings according to the range and the frequency of setting for, wherein, control module includes: the control unit is used for acquiring state information when the vibrating mirror motor reaches a target state and generating a control signal based on the state information; and the driving unit is used for acquiring the control signal and controlling the galvanometer motor based on the control signal so as to enable the galvanometer motor to be in the target state. The control method and the control device can avoid interference of the vibrating mirror control signals and improve the control capability of the vibrating mirror motor.

Description

Handheld laser welding system, welding method and galvanometer control method
Technical Field
The application relates to the technical field of lasers, in particular to a handheld laser welding system, a welding method and a galvanometer control method.
Background
The laser welding technology is a laser material processing technology, and can weld any part and angle of a workpiece by using the existing laser welding machine. The existing laser welding machine consists of a laser provided with a laser welding machine control circuit board and a galvanometer driving circuit board and a welding gun. And a vibrating mirror motor is arranged in the welding gun and used for driving the vibrating mirror to swing and enabling the vibrating mirror to reflect laser. The vibrating mirror motor is used for controlling the vibrating mirror to swing different amplitudes, so that laser can deflect different angles, and welding seams with different widths are generated. However, in the existing laser welding machine, a vibration mirror control signal for controlling a vibration mirror motor is easily disturbed, so that the vibration mirror motor cannot work normally, and thus problems such as abnormal vibration, howling and the like of the vibration mirror motor occur.
Disclosure of Invention
In view of this, the present application provides a handheld laser welding system, a welding method, and a galvanometer control method, which can avoid the interference of a galvanometer control signal and improve the control capability of a galvanometer motor.
The application provides a handheld laser welding system, handheld laser welding system includes laser instrument and welder, be provided with galvanometer motor and control module in the welder, control module control the amplitude and the frequency swing that the galvanometer motor was set for, wherein, control module includes:
the control unit is used for acquiring state information when the vibrating mirror motor reaches a target state and generating a control signal based on the state information;
and the driving unit is used for acquiring the control signal and controlling the galvanometer motor based on the control signal so as to enable the galvanometer motor to be in the target state.
Optionally, the driving unit includes a central processing subunit, an amplifying subunit, and a driving subunit;
the central processing subunit is connected with the amplifying subunit and is used for generating and outputting a target position signal based on the control signal;
the amplifying subunit is connected with the driving subunit and is used for amplifying the target position signal;
and the driving subunit is connected with the galvanometer motor and is used for driving the galvanometer motor to swing to a target position based on the amplified target position signal.
Optionally, the driving unit further comprises a detection subunit, a comparison subunit and an adjustment subunit;
the detection subunit is connected with the galvanometer motor and used for detecting the actual position of the galvanometer motor and generating an actual position signal;
the comparison subunit is connected with the adjustment subunit and is used for comparing the target position signal with the actual position signal to obtain an error signal;
the adjusting subunit is connected with the driving subunit and used for generating an adjusting signal based on the error signal and transmitting the adjusting signal to the driving subunit so that the driving subunit drives the galvanometer motor to swing to a target position based on the adjusting signal.
Optionally, the laser of the handheld laser welding system includes:
and the laser control module is used for transmitting the state information to the control unit when the power of the emitted laser needs to be regulated.
The application also provides a galvanometer control method in a handheld laser welding system, comprising the following steps:
a galvanometer motor and a control module are arranged in a welding gun of the handheld laser welding system, the control module controls the galvanometer motor to swing according to set amplitude and frequency, wherein,
the control module acquires state information when the galvanometer motor reaches a target state, generates a control signal based on the state information, and controls the galvanometer motor so that the galvanometer motor is in the target state.
Optionally, the control module obtains state information when the galvanometer motor reaches a target state, and generating the control signal based on the state information further includes:
generating and outputting a target position signal based on the control signal;
amplifying the target position signal;
detecting the actual position of the vibrating mirror motor and generating an actual position signal;
comparing the amplified target position signal with the actual position signal to obtain an error signal;
and generating an adjusting signal based on the error signal, and driving the galvanometer motor to swing to a target position according to the adjusting signal.
Optionally, the method comprises: and configuring a laser control module in the laser of the handheld laser welding system, wherein the laser control module is used for transmitting the state information to the control module when the laser power is regulated.
Optionally, the galvanometer control method includes:
a control unit and a driving unit are configured in the control module;
the control unit is used for acquiring state information when the vibrating mirror motor reaches a target state and generating a control signal based on the state information;
the driving unit is used for acquiring the control signal and controlling the galvanometer motor based on the control signal so as to enable the galvanometer motor to be in the target state.
Optionally, the galvanometer control method includes:
a central processing subunit, an amplifying subunit and a driving subunit are configured in the driving unit;
the central processing subunit is connected with the amplifying subunit and is used for generating and outputting a target position signal based on the control signal;
the amplifying subunit is connected with the driving subunit and is used for amplifying the target position signal;
the driving subunit is connected with the galvanometer motor and is used for driving the galvanometer motor to swing to a target position based on the amplified target position signal.
In addition, the application also provides a welding method based on the handheld laser welding system, which comprises the following steps:
a laser in the handheld laser welding system emits laser light;
adjusting a power parameter of the laser emitted by the laser;
based on the mapping relation between the adjusted power parameters and the state information, determining corresponding state information, and transmitting the state information to a welding gun control module in the handheld laser welding system;
the welding gun control module generates a control signal and controls the vibrating mirror motor in the welding gun to swing to a target position based on the control signal;
the welding gun irradiates a laser beam to a processing area.
The application provides a handheld laser welding system, welding method and galvanometer control method, this handheld laser welding system, handheld laser welding system includes laser instrument and welder, is provided with galvanometer motor and control module in the welder, and wherein, control module includes: the handheld laser welding system can enable the galvanometer motor to be in a target state. The handheld laser welding system of the application is characterized in that the vibrating mirror motor and the control module are arranged on the welding gun, so that the vibrating mirror motor and the control module can be connected through a shorter distance, the transmission time of signals is shortened, the probability that the signals are interfered in the transmission process is reduced, the signals are prevented from being interfered to influence the normal work of the vibrating mirror motor, in addition, the state information and the control signals are processed through the control unit and the driving unit respectively, the burden of the driving unit for processing the information is reduced, and the control capability of the driving unit on the vibrating mirror motor is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a conventional laser welder;
FIG. 2 is a schematic diagram of a handheld laser welding system according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a detection subunit according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an integral adjusting circuit according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a speed adjusting circuit according to an embodiment of the present disclosure;
fig. 6 is a schematic flow chart of a galvanometer control method according to an embodiment of the present disclosure;
fig. 7 is a schematic flow chart of a welding method according to an embodiment of the present application;
01, a laser of the existing handheld laser welding system; 02. welding guns of existing hand-held laser welding systems; 1. the laser of the hand-held laser welding system; 2. the welding gun of the handheld laser welding system is provided; 11. a laser control module; 21. a galvanometer motor; 22. and a control module.
Detailed Description
Referring to fig. 1, fig. 1 is a schematic structural diagram of a conventional laser welding machine.
In the conventional laser welder, a galvanometer driving plate is built in a laser 01 of the laser welder, and a galvanometer motor 21 is built in a welding gun 02. The volume of the vibrating mirror driving plate adopted by the existing laser welding machine is large, the heating is serious, and the additional radiating plate is needed to assist in radiating, so that the whole vibrating mirror driving plate is large, and the general size is about 80 x 50 x 30 mm. The welding gun 02 is connected with the laser 01 through a long cable of several meters to 10 meters for the convenience of workers. The motor driving signal and the motor feedback signal output from the vibrating mirror driving plate are transmitted through a cable with a length of several meters or even more than 10 meters. Because the cable is very long and is easy to damage, the connection part between the cable and the welding gun 02 is easy to drop, signal attenuation and interference are easy to cause, the normal operation of the vibrating mirror motor 21 is affected, and the motor has the problems of abnormal vibration, howling and the like. In order to solve the problems of the existing laser welding machine, the present application provides the following examples.
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application. The various embodiments described below and their technical features can be combined with each other without conflict.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a handheld laser welding system according to an embodiment of the present application.
The embodiment of the application provides a handheld laser welding system, which comprises a laser 1 and a welding gun 2, wherein the laser 1 is connected with the welding gun 2.
The laser 1 of the hand-held laser welding system comprises:
the laser control module 11 is configured to transmit status information to the control unit when the power of the emitted laser light needs to be adjusted.
It can be understood that the laser control module 11 may be a main control chip, and controls the laser emitted by the handheld laser welding system according to the set power parameter.
The welding gun 2 of the handheld laser welding system comprises a galvanometer motor 21 and a control module 22, wherein the control module controls the galvanometer motor to swing according to set amplitude and frequency.
The control module 22 includes:
a control unit for acquiring state information when the galvanometer motor 21 reaches a target state, and generating a control signal based on the state information.
It will be appreciated that the status information may be information describing the intensity of the laser emitted by the hand-held laser welding system, such as laser sweep amplitude and frequency information, or may be information describing the status of the galvanometer motor 21, such as motor power, motor swing amplitude, etc.
In some embodiments, the laser control module 11 communicates with the control module 22 via a control unit, for example, by wired or wireless communication, that is, status information such as laser scanning amplitude and frequency information is transmitted to the control unit.
In some embodiments, the control module 22 adopts a CPU chip, and can communicate with the laser control module 11, so that the functions of indicating the indicator light and detecting the key can be realized according to the requirement of the laser control module 11.
And a driving unit for acquiring the control signal and controlling the galvanometer motor 21 based on the control signal so as to make the galvanometer motor 21 in a target state.
In this embodiment, the hand-held laser welding system is provided with a power supply by which the laser 1 and the welding gun 2 are supplied, and further by which the laser control module 11 is supplied, and by which the galvanometer motor 21 and the control module 22 are supplied.
Optionally, in some embodiments, the drive unit includes a central processing subunit, an amplifying subunit, and a drive subunit.
And the central processing subunit is connected with the amplifying subunit and is used for generating and outputting a target position signal based on the control signal.
In some embodiments, the central processing subunit may be an operator for implementing logic operation, or may be a CPU chip with stronger data and signal processing capability.
And the amplifying subunit is connected with the driving subunit and is used for amplifying the target position signal.
In some embodiments, the amplifying subunit may be an amplifying circuit built with an integrated amplifier as a core, or may be an amplifying circuit formed by combining and connecting active devices and passive devices.
And the driving subunit is connected with the galvanometer motor 21 and is used for driving the galvanometer motor 21 to swing to a target position based on the amplified target position signal.
In some embodiments, the drive subunit is a drive circuit, e.g., a multiphase current circuit, for driving the stepper motor.
In this embodiment, the driving subunit is a driving circuit and is disposed on a circuit board having a length of 25mm and a width of 25 mm.
The driving circuit provided on the circuit board having a length of 25mm and a width of 25mm has a size of one tenth of that of the conventional driving circuit.
Optionally, in some embodiments, the drive unit further comprises a detection subunit, a contrast subunit, and an adjustment subunit.
And a detection subunit, connected to the galvanometer motor 21, for detecting the actual position of the galvanometer motor 21 and generating an actual position signal.
And the comparison subunit is connected with the adjustment subunit and is used for comparing the target position signal with the actual position signal to obtain an error signal.
In some embodiments, the contrast subunit may be a differential amplifying circuit or a more complex logic gate circuit.
And an adjusting sub-unit connected with the driving sub-unit for generating an adjusting signal based on the error signal and transmitting the adjusting signal to the driving sub-unit so that the driving sub-unit drives the galvanometer motor 21 to swing to a target position based on the adjusting signal.
In some embodiments, the conditioning subunit includes an integral conditioning function, a proportional conditioning function, and a differential conditioning function, respectively implemented by an integral operator, a proportional operator, and a differential operator.
Optionally, in some embodiments, the detection subunit includes a set of sensing devices and a set of conversion devices.
The input end of the sensing device group is used as the input end of the detection subunit and is used for inputting the optical signal, and the output end of the sensing device group is connected with the input end of the conversion device group and is used for outputting the current signal.
The output of the switching device group serves as the output of the detection subunit and is used for outputting a voltage signal.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a detection subunit according to an embodiment of the present application.
The sensing device group comprises a first diode D1 and a second diode D2, wherein anodes of the first diode D1 and the second diode D2 are grounded, and cathodes of the first diode D1 and the second diode D2 are used as output ends of the sensing device group.
The conversion device group includes a third operational amplifier OPA3, a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4, a first capacitor C1, and a second capacitor C2.
The first end of the third operational amplifier OPA3 is used as the input end of the sensing device group, the second end of the third operational amplifier OPA3 is used as the output end of the sensing device group, and the third end of the third operational amplifier OPA3 is grounded after being connected with the third resistor R3.
The first resistor R1 and the second resistor R2 are connected in series and then connected with the first end of the first operational amplifier.
One end of the first capacitor C1 is connected with the first end of the first operational amplifier, and the other end of the first capacitor C1 is grounded.
One end of the fourth resistor R4 and one end of the second capacitor C2 are connected with the first end of the first operational amplifier, and the other end of the fourth resistor R4 and the other end of the second capacitor C2 are connected with the second end of the first operational amplifier.
Optionally, in some embodiments, the tuning subunit includes an integral tuning circuit including a first operational amplifier, a first set of capacitive devices, and a first set of variable resistance devices;
the first end of the first operational amplifier is used as the output end of the integral regulating circuit, the second end of the first operational amplifier is connected with the output end of the first variable resistor device group, and the input end of the first variable resistor device group is used as the input end of the integral regulating circuit;
the input end of the first capacitor device group is connected with the first end of the first operational amplifier, and the output end of the first capacitor device group is connected with the second end of the first operational amplifier.
Referring to fig. 4, fig. 4 is a schematic structural diagram of an integral adjusting circuit according to an embodiment of the present application.
The first capacitor device group includes a third capacitor C3, and the first variable resistor device group includes a first variable resistor Rx1 and a fifth resistor R5.
The first end of the first operational amplifier OPA1 is used as the output end of the integral regulating circuit, and the third end of the first operational amplifier OPA1 is grounded.
One end of the third capacitor C3 is connected to the first end of the first operational amplifier OPA1, and the other end of the third capacitor C3 is connected to the second end of the first operational amplifier OPA 1.
The second end of the first operational amplifier OPA1 is connected to one end of the fifth resistor R5, the other end of the fifth resistor R5 is connected to one end of the first variable resistor Rx1, and the other end of the first variable resistor Rx1 is used as an input end of the integral regulating circuit.
Optionally, in some embodiments, the regulation subunit includes a speed regulation circuit including a second operational amplifier, a second set of capacitive devices, and a second set of variable resistance devices.
The first end of the second operational amplifier is used as the output end of the speed regulating circuit, the second end of the second operational amplifier is connected with the output end of the second capacitor device group, and the input end of the second capacitor device group is used as the input end of the speed regulating circuit.
The input end of the second variable resistor device group is connected with the first end of the first operational amplifier, and the output end of the second variable resistor device group is connected with the second end of the first operational amplifier.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a speed adjusting circuit according to an embodiment of the present application.
The second capacitor device group includes a fifth capacitor C5, and the second variable resistor device group includes a second variable resistor Rx2, a fourth capacitor C4, and a sixth resistor R6.
The first end of the second operational amplifier OPA2 is used as the output end of the speed regulating circuit, and the third end of the first operational amplifier OPA1 is grounded.
One end of the fifth capacitor C5 is connected to the second end of the second operational amplifier OPA2, and the other end of the fifth capacitor C5 is used as an input end of the speed adjusting circuit.
One end of the fourth capacitor C4 is connected to the second end of the second operational amplifier OPA2, and the other end of the fourth capacitor C4 is connected to the first end of the second operational amplifier OPA 2.
The second end of the second operational amplifier OPA2 is connected to one end of the sixth resistor R6, the other end of the sixth resistor R6 is connected to one end of the second variable resistor Rx2, and the other end of the second variable resistor Rx2 is connected to the first end of the second operational amplifier OPA 2.
Optionally, in some embodiments, the adjusting subunit includes a scaling circuit including a third operational amplifier, a first set of resistive devices, and a second set of resistive devices.
The first end of the third operational amplifier is used as the output end of the proportion adjusting circuit, the second end of the third operational amplifier is connected with the output end of the first resistor device group, and the input end of the first resistor device group is used as the input end of the proportion adjusting circuit.
The input end of the second resistor device group is connected with the first end of the third operational amplifier, and the output end of the second resistor device group is connected with the second end of the third operational amplifier.
The embodiment of the application provides a handheld laser welding system, the welder 2 of this handheld laser welding system includes galvanometer motor 21 and control module 22, and control module 22 includes: a control unit for acquiring state information when the galvanometer motor 21 reaches a target state and generating a control signal based on the state information, and a driving unit for acquiring the control signal and controlling the galvanometer motor 21 based on the control signal, the hand-held laser welding system being capable of bringing the galvanometer motor 21 into the target state. The handheld laser welding system of this embodiment is because will shake mirror motor 21 and control module 22 and all locate welder 2, consequently shake mirror motor 21 and control module 22 can be through the connection of shorter distance, shorten the transmission time of signal, thereby reduce the probability that the signal is disturbed in transmission process, be favorable to avoiding the signal to be disturbed and influence shake mirror motor 21 normal work, in addition, handle status information and control signal respectively through control unit and drive unit, be favorable to alleviateing drive unit and handle the burden of information, thereby improve drive unit to shake mirror motor 21's controllability.
Referring to fig. 6, fig. 6 is a flow chart of a galvanometer control method according to an embodiment of the disclosure.
The embodiment of the application provides a galvanometer control method in a handheld laser welding system, a laser of the handheld laser welding system comprises a laser control module, a welding gun of the handheld laser welding system comprises a galvanometer motor and a control module, the control module comprises a control unit and a driving unit, and the control module controls the galvanometer motor to swing according to set amplitude and frequency.
The control unit is used for acquiring state information when the vibrating mirror motor reaches a target state and generating a control signal based on the state information; the driving unit is used for acquiring a control signal and controlling the galvanometer motor based on the control signal so as to enable the galvanometer motor to be in a target state.
S11, the control module acquires state information when the vibrating mirror motor reaches a target state.
S12, generating a control signal based on the state information.
And S13, controlling the galvanometer motor based on the control signal so as to enable the galvanometer motor to be in a target state.
Optionally, in some embodiments, the drive unit includes a central processing subunit, an amplifying subunit, and a drive subunit, the central processing subunit being coupled to the amplifying subunit, the amplifying subunit being coupled to the drive subunit.
The step S13 includes:
(131) The target position signal is generated and output based on the control signal using the central processing subunit.
(132) The target position signal is amplified by an amplifying subunit.
(133) And driving the galvanometer motor to swing to the target position based on the amplified target position signal by using the driving subunit.
Optionally, in some embodiments, the driving unit further comprises a detection subunit, a contrast subunit, and an adjustment subunit, the detection subunit is connected to the galvanometer motor, the contrast subunit is connected to the adjustment subunit, and the adjustment subunit is connected to the driving subunit.
The step S13 further includes:
(134) The actual position of the galvanometer motor is detected by a detection subunit and an actual position signal is generated.
(135) And comparing the target position signal with the actual position signal by using a comparison subunit to obtain an error signal.
(136) And generating an adjusting signal based on the error signal by using the adjusting subunit, and transmitting the adjusting signal to the driving subunit so that the driving subunit drives the galvanometer motor to swing to a target position based on the adjusting signal.
Optionally, in some embodiments, the laser control module is configured to transmit status information to the control module when adjusting the emitted laser power.
In this embodiment, the hand-held laser welding system is provided with a power supply by which the laser 1 and the welding gun 2 are supplied, and further by which the laser control module 11 is supplied, and by which the galvanometer motor 21 and the control module 22 are supplied.
In this embodiment, the driving subunit is a driving circuit and is disposed on a circuit board having a length of 25mm and a width of 25 mm.
The driving circuit provided on the circuit board having a length of 25mm and a width of 25mm has a size of one tenth of that of the conventional driving circuit.
Optionally, in some embodiments, the detection subunit includes a set of sensing devices and a set of conversion devices.
The input end of the sensing device group is used as the input end of the detection subunit and is used for inputting the optical signal, and the output end of the sensing device group is connected with the input end of the conversion device group and is used for outputting the current signal.
The output of the switching device group serves as the output of the detection subunit and is used for outputting a voltage signal.
Optionally, in some embodiments, the tuning subunit includes an integral tuning circuit including a first operational amplifier, a first set of capacitive devices, and a first set of variable resistance devices.
The first end of the first operational amplifier is used as the output end of the integral regulating circuit, the second end of the first operational amplifier is connected with the output end of the first variable resistor device group, and the input end of the first variable resistor device group is used as the input end of the integral regulating circuit.
The input end of the first capacitor device group is connected with the first end of the first operational amplifier, and the output end of the first capacitor device group is connected with the second end of the first operational amplifier.
Optionally, in some embodiments, the regulation subunit includes a speed regulation circuit including a second operational amplifier, a second set of capacitive devices, and a second set of variable resistance devices.
The first end of the second operational amplifier is used as the output end of the speed regulating circuit, the second end of the second operational amplifier is connected with the output end of the second capacitor device group, and the input end of the second capacitor device group is used as the input end of the speed regulating circuit.
The input end of the second variable resistor device group is connected with the first end of the first operational amplifier, and the output end of the second variable resistor device group is connected with the second end of the first operational amplifier.
Optionally, in some embodiments, the adjusting subunit includes a scaling circuit including a third operational amplifier, a first set of resistive devices, and a second set of resistive devices.
The first end of the third operational amplifier is used as the output end of the proportion adjusting circuit, the second end of the third operational amplifier is connected with the output end of the first resistor device group, and the input end of the first resistor device group is used as the input end of the proportion adjusting circuit.
The input end of the second resistor device group is connected with the first end of the third operational amplifier, and the output end of the second resistor device group is connected with the second end of the third operational amplifier.
The embodiment of the application provides a galvanometer control method, firstly, a laser control module is utilized to adjust power parameters of emitted laser, then a control unit is utilized to determine corresponding state information based on a mapping relation between the adjusted power parameters and the state information, a control signal is generated based on the corresponding state information, and finally a driving unit is utilized to control a galvanometer motor based on the control signal so as to enable the galvanometer motor to control the galvanometer to swing. According to the embodiment of the application, the vibrating mirror motor and the control module are arranged on the welding gun, so that the vibrating mirror motor and the control module can be connected through a shorter distance, the transmission time of signals is shortened, the probability that the signals are interfered in the transmission process is reduced, the signals are prevented from being interfered to influence the normal operation of the vibrating mirror motor, in addition, the state information and the control signals are processed through the control unit and the driving unit respectively, the burden of the driving unit for processing the information is reduced, and the control capability of the driving unit on the vibrating mirror motor is improved.
Referring to fig. 7, fig. 7 is a flow chart of a welding method according to an embodiment of the present application.
The embodiment provides a welding method based on a handheld laser welding system, which can be applied to any one of the handheld laser welding systems, and includes:
s21, a laser in the handheld laser welding system emits laser light.
S22, adjusting the power parameter of the laser emitted by the laser.
S23, based on the mapping relation between the adjusted power parameters and the state information, corresponding state information is determined, and the state information is transmitted to a welding gun control module in the handheld laser welding system.
And S24, the welding gun control module generates a control signal and controls the vibrating mirror motor in the welding gun to swing to a target position based on the control signal.
S25, the welding gun irradiates the laser beam to the processing area.
The specific implementation of each operation above may be referred to the previous embodiments, and will not be described herein.
Although the application has been shown and described with respect to one or more implementations, equivalent alterations and modifications will occur to others skilled in the art based upon a reading and understanding of this specification and the annexed drawings. This application is intended to cover all such modifications and variations, and is limited only by the scope of the appended claims.
That is, the foregoing embodiments are merely examples of the present application, and are not intended to limit the scope of the patent application, and all equivalent structures or equivalent processes using the descriptions and the contents of the present application, such as the combination of technical features of the embodiments, or direct or indirect application to other related technical fields, are included in the scope of the patent protection of the present application.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present application.
In addition, the present application may use the same or different reference numerals for structural elements having the same or similar characteristics. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The previous description is provided to enable any person skilled in the art to make or use the present application. In the above description, various details are set forth for purposes of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes have not been shown in detail to avoid unnecessarily obscuring the description of the present application. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

Claims (10)

1. The utility model provides a handheld laser welding system, includes laser instrument and welder, its characterized in that is provided with galvanometer motor and control module in the welder, control module control the galvanometer motor swings according to the amplitude and the frequency of settlement, wherein, control module includes:
the control unit is used for acquiring state information when the vibrating mirror motor reaches a target state and generating a control signal based on the state information;
and the driving unit is used for acquiring the control signal and controlling the galvanometer motor based on the control signal so as to enable the galvanometer motor to be in the target state.
2. The hand-held laser welding system of claim 1, wherein the drive unit comprises a central processing subunit, an amplifying subunit, and a drive subunit;
the central processing subunit is connected with the amplifying subunit and is used for generating and outputting a target position signal based on the control signal;
the amplifying subunit is connected with the driving subunit and is used for amplifying the target position signal;
and the driving subunit is connected with the galvanometer motor and is used for driving the galvanometer motor to swing to a target position based on the amplified target position signal.
3. The hand-held laser welding system of claim 2, wherein the drive unit further comprises a detection subunit, a contrast subunit, and an adjustment subunit;
the detection subunit is connected with the galvanometer motor and used for detecting the actual position of the galvanometer motor and generating an actual position signal;
the comparison subunit is connected with the adjustment subunit and is used for comparing the target position signal with the actual position signal to obtain an error signal;
the adjusting subunit is connected with the driving subunit and used for generating an adjusting signal based on the error signal and transmitting the adjusting signal to the driving subunit so that the driving subunit drives the galvanometer motor to swing to a target position based on the adjusting signal.
4. The hand-held laser welding system of claim 1, wherein the laser in the hand-held laser welding system comprises:
and the laser control module is used for transmitting the state information to the control unit when the power of the emitted laser needs to be regulated.
5. A method for controlling a galvanometer in a hand-held laser welding system, comprising:
a galvanometer motor and a control module are arranged in a welding gun of the handheld laser welding system, the control module controls the galvanometer motor to swing according to set amplitude and frequency, wherein,
the control module acquires state information when the galvanometer motor reaches a target state, generates a control signal based on the state information, and controls the galvanometer motor so that the galvanometer motor is in the target state.
6. The galvanometer control method of claim 5, wherein the control module obtaining state information when the galvanometer motor reaches a target state, and generating a control signal based on the state information further comprises:
generating and outputting a target position signal based on the control signal;
amplifying the target position signal;
detecting the actual position of the vibrating mirror motor and generating an actual position signal;
comparing the amplified target position signal with the actual position signal to obtain an error signal;
and generating an adjusting signal based on the error signal, and driving the galvanometer motor to swing to a target position according to the adjusting signal.
7. The galvanometer control method according to claim 5, comprising: and configuring a laser control module in the laser of the handheld laser welding system, wherein the laser control module is used for transmitting the state information to the control module when the laser power is regulated.
8. The galvanometer control method according to claim 5, comprising:
a control unit and a driving unit are configured in the control module;
the control unit is used for acquiring state information when the vibrating mirror motor reaches a target state and generating a control signal based on the state information;
the driving unit is used for acquiring the control signal and controlling the galvanometer motor based on the control signal so as to enable the galvanometer motor to be in the target state.
9. The galvanometer control method according to claim 8, comprising:
a central processing subunit, an amplifying subunit and a driving subunit are configured in the driving unit;
the central processing subunit is connected with the amplifying subunit and is used for generating and outputting a target position signal based on the control signal;
the amplifying subunit is connected with the driving subunit and is used for amplifying the target position signal;
the driving subunit is connected with the galvanometer motor and is used for driving the galvanometer motor to swing to a target position based on the amplified target position signal.
10. A welding method based on a hand-held laser welding system, comprising:
a laser in the handheld laser welding system emits laser light;
adjusting a power parameter of the laser emitted by the laser;
based on the mapping relation between the adjusted power parameters and the state information, determining corresponding state information, and transmitting the state information to a welding gun control module in the handheld laser welding system;
the welding gun control module generates a control signal and controls the vibrating mirror motor in the welding gun to swing to a target position based on the control signal;
the welding gun irradiates a laser beam to a processing area.
CN202310579081.4A 2023-05-22 2023-05-22 Handheld laser welding system, welding method and galvanometer control method Pending CN116532785A (en)

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CN202310579081.4A CN116532785A (en) 2023-05-22 2023-05-22 Handheld laser welding system, welding method and galvanometer control method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117620431A (en) * 2024-01-26 2024-03-01 宁德时代新能源科技股份有限公司 Welding track determining method and welding system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117620431A (en) * 2024-01-26 2024-03-01 宁德时代新能源科技股份有限公司 Welding track determining method and welding system
CN117620431B (en) * 2024-01-26 2024-05-28 宁德时代新能源科技股份有限公司 Welding track determining method and welding system

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