Laser cladding device and correction method

Abstract

The invention relates to a laser cladding device and a correction method, and aims to improve correction efficiency and correction accuracy, the laser cladding device comprises: a wire feeding mechanism for conveying a metal wire; the laser cladding mechanism is used for emitting laser to clad the metal wire; the correction mechanism comprises a conductive wire aligning piece, a light beam analyzer and a translation piece, the conductive wire aligning piece is used for forming a contact electric signal when making contact with the metal wire, the light beam analyzer is arranged on the translation piece and used for obtaining light spot information of the laser, and the translation piece is used for driving the light beam analyzer to move; the transferring mechanism is used for driving the wire feeding mechanism and the correcting mechanism to move respectively; the controller is electrically connected with the wire feeding mechanism, the conductive wire aligning piece, the light beam analyzer, the transferring mechanism and the laser cladding mechanism and is configured to obtain light spot information; acquiring position information of the metal wire based on the contact electric signal; and the transferring mechanism, the wire feeding mechanism and the laser cladding mechanism are controlled based on the light spot information and the position information of the metal wire so as to adjust the coaxiality of the light spot of the laser and the metal wire.

Description

Technical Field

[0001] The present application relates to the technical field of laser cladding, and in particular to a laser cladding device and a correction method. Background Art

[0002] The coaxial metal wire cladding device is mainly composed of a laser optical path mechanism and a wire feeding mechanism. The laser beam after beam shaping will surround the metal wire in the form of an annular spot, and finally a focusing lens will converge the annular spot on the metal wire to heat and clad the metal wire. The spatial coaxiality of the metal wire and the annular spot will affect the uniformity of the heating of the metal wire during the heating process. However, the correction of the spatial coaxiality of the metal wire and the annular spot is mostly achieved by manual visual inspection, which is labor-intensive and has a high error rate, resulting in low correction efficiency. Summary of the invention

[0003] In view of the above, it is necessary to provide a laser cladding device and a correction method to improve the correction efficiency and correction accuracy of the coaxiality of the laser spot and the metal wire.

[0004] The present application provides a laser cladding device, comprising: A wire feeding mechanism for feeding the metal wire; A laser cladding mechanism, used for emitting laser to clad the metal wire; A correction mechanism, comprising a conductive wire-matching member, a beam analyzer and a translation member, wherein the conductive wire-matching member is provided with a wire-matching hole, wherein the wire-matching hole is used for the metal wire to pass through, and the conductive wire-matching member is used for forming a contact electrical signal when contacting the metal wire, and the beam analyzer is provided on the translation member for obtaining the spot information of the laser, and the beam analyzer and the conductive wire-matching member are arranged relative to each other along the axial direction of the wire-matching hole, and the translation member is used for driving the beam analyzer to move so as to adjust the relative position of the beam analyzer and the conductive wire-matching member; A transfer mechanism, used for driving the wire feeding mechanism and the correction mechanism to move respectively; A controller is electrically connected to the wire feeding mechanism, the conductive wire pair, the beam analyzer, the transfer mechanism and the laser cladding mechanism, and the controller is configured as follows: Acquiring the light spot information; acquiring position information of the metal wire based on the contact electrical signal; The transfer mechanism, the wire feeding mechanism and the laser cladding mechanism are controlled based on the light spot information and the position information of the metal wire to adjust the coaxiality of the laser light spot and the metal wire.

[0005] In some embodiments, the laser cladding device further comprises: A position detection mechanism is arranged adjacent to the wire feeding mechanism and includes an imaging element and a position detection element, wherein the imaging element is used to obtain a plane image of the conductive wire alignment element and the beam profiler in the axial direction of the wire alignment hole, and the position detection element is electrically connected to the imaging element and is used to obtain and determine multiple contour spacings between the contour of the wire alignment hole and the contour of the beam profiler in the radial direction of the wire alignment hole based on the plane image; Wherein, the controller is electrically connected to the position detection member and the translation member respectively, and the controller is configured to control the translation member to drive the light beam analyzer to move based on a plurality of the contour intervals so as to make the light beam analyzer coaxial with the wire hole.

[0006] In some embodiments, the correction mechanism further comprises: A correction base is arranged relative to and spaced from the conductive wire pair; A plurality of support rods are arranged at intervals between the correction base and the conductive wire pair, the plurality of support rods are arranged to form a protective area, and the translation member is arranged on the correction base and is located in the protective area; Wherein, the transfer mechanism is also used to drive the correction mechanism to reciprocate between the position detection mechanism, the wire feeding mechanism, and the laser cladding mechanism through the correction base.

[0007] In some embodiments, the wire feeding mechanism includes a wire outlet component, which is used to output the metal wire and change the angle of the metal wire to adjust the position of the metal wire. The laser cladding mechanism includes a focusing component, which is used to adjust the spot of the laser. The controller is electrically connected to the wire outlet component and the focusing component respectively, and the controller is configured to: control the wire outlet component to adjust the angle of the metal wire, and control the focusing component to adjust the spot of the laser.

[0008] In some embodiments, the wire feeding mechanism moves under the drive of the transfer mechanism so that the metal wire abuts against multiple positions of the wire hole, thereby forming multiple contact electrical signals, and the controller is configured as follows: Obtaining central axis information of the metal wire based on a plurality of the contact electrical signals to form position information of the metal wire; Based on the position information of the metal wire, the transfer mechanism is controlled to drive the correction mechanism to move, so that the wire hole and the metal wire are coaxial; Controlling the focusing element to adjust the laser spot so that the laser spot is coaxial with the threading hole; Wherein, the beam analyzer is used to obtain the spot information of the laser after the wire hole and the metal wire are coaxial.

[0009] In some embodiments, the laser cladding mechanism further comprises: A light spot calibration component, used to adjust the uniformity of the light spot of the laser; A spot detector is electrically connected to the beam analyzer and the controller respectively, and is used to determine whether the uniformity of the laser spot meets the preset uniformity requirement. If yes, the spot detector transmits an end signal to the controller; if not, the spot detector transmits a spot adjustment signal to the spot calibration component, so that the spot calibration component adjusts the uniformity of the laser spot. After the spot calibration component adjusts the uniformity of the laser spot, the spot detector transmits a spot acquisition signal to the beam analyzer, so that the beam analyzer obtains the adjusted laser spot information after the wire hole and the metal wire are coaxial.

[0010] In some embodiments, the wire feeding mechanism moves under the drive of the transfer mechanism so that the metal wire abuts against multiple positions of the wire-matching hole, thereby forming multiple contact electrical signals, and the controller is configured as follows: Obtaining central axis information of the metal wire based on a plurality of the contact electrical signals to form position information of the metal wire; Based on the light spot information, the transfer mechanism is controlled to drive the correction mechanism to move, so that the light spot of the laser is coaxial with the wire hole; Based on the position information of the metal wire, the wire outlet member is controlled to adjust the angle of the metal wire so that the metal wire is coaxial with the wire hole; Wherein, the transfer mechanism is used to drive the metal wire to abut against multiple positions of the wire hole after the laser spot and the wire hole are coaxial.

[0011] In some embodiments, the wire feeding mechanism further comprises: A metal wire calibration member, used for adjusting the straightness of the metal wire; A metal wire detection component is electrically connected to the controller and is used to determine whether the straightness of the metal wire meets the preset straightness requirement. If yes, the metal wire detection component transmits an end signal to the controller; if not, the metal wire detection component transmits an adjustment signal to the metal wire calibration component so that the metal wire calibration component adjusts the straightness of the metal wire. After adjusting the straightness of the metal wire, the metal wire calibration component transmits a metal wire acquisition signal to the controller so that the controller controls the transfer mechanism to drive the wire feeding mechanism to move so that the adjusted metal wire contacts the conductive pair of wire components.

[0012] In some embodiments, the laser cladding device further comprises: An optical module is fixedly arranged on a side of the beam analyzer facing the wire hole, and is used to correct the laser, wherein the optical module includes at least one of a polarizing element, a filtering element, and an attenuating element.

[0013] The embodiment of the present application further provides a correction method, which uses the above-mentioned laser cladding device to correct the coaxiality of the metal wire and the laser spot, and the correction method includes: The controller controls the translation member to drive the beam analyzer to move, so that the wire hole and the beam analyzer are coaxial; The controller controls the transfer mechanism to drive the correction mechanism to move below the wire feeding mechanism and the laser cladding mechanism; Acquiring the light spot information and the position information of the metal wire through the controller; Based on the light spot information and the position information of the metal wire, the controller controls the transfer mechanism, the wire feeding mechanism and the laser cladding mechanism to operate respectively to adjust the coaxiality of the laser light spot and the metal wire.

[0014] In the above-mentioned laser cladding device and correction method, the beam analyzer can be moved relative to the conductive wire-aligning member driven by the translation member so that the beam analyzer and the wire-aligning hole are coaxial. On this basis, the beam analyzer and the wire-aligning hole are relatively fixed. The position of the laser spot can be adjusted first to make the laser spot coaxial with the wire-aligning hole, and then the position of the metal wire can be adjusted to make the metal wire coaxial with the wire-aligning hole, thereby adjusting the coaxiality of the metal wire and the laser spot. Alternatively, the position of the metal wire can be adjusted first to make the metal wire coaxial with the wire-aligning hole, and then the position of the laser spot can be adjusted to make the laser spot coaxial with the wire-aligning hole, thereby adjusting the coaxiality of the metal wire and the laser spot. Compared with the visual correction method, the above-mentioned correction device and correction method improve the correction efficiency and correction accuracy of the coaxiality of the laser spot and the metal wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the architecture of the laser cladding device according to an embodiment of the present application.

[0016] Figure 2 This is a schematic diagram of the structure of the correction mechanism and beam module in the laser cladding device.

[0017] Figure 3 Schematic diagram of the four positions where the metal wire contacts the wire hole.

[0018] Figure 4 It is a side schematic diagram of the laser spot, metal wire, conductive wire pair, optical module, beam analyzer and translation part.

[0019] Figure 5Schematic diagram of the flow of the calibration method according to the embodiment of the present application.

[0020] Figure 6 FIG. 4 is a flow chart of another calibration method according to an embodiment of the present application.

[0021] Explanation of the main component symbols: laser cladding device 100, wire feeding mechanism 110, wire outlet part 111, metal wire calibration part 112, metal wire detection part 113, laser cladding mechanism 120, focusing part 121, light spot calibration part 122, light spot detector 123, correction mechanism 130, protection area 130a, conductive wire alignment part 131, wire alignment hole 131a, beam analyzer 132, translation part 133, correction base 134, support rod 135, transfer mechanism 140, controller 150, position detection mechanism 160, imaging part 161, position detection part 162, optical module 170, metal wire 200, light spot 300. DETAILED DESCRIPTION

[0022] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0023] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] The following is a detailed description of various embodiments of the present invention in conjunction with the accompanying drawings.

[0025] See also Figure 1 The embodiment of the present application provides a laser cladding device 100, including a wire feeding mechanism 110, a laser cladding mechanism 120, a correction mechanism 130, a transfer mechanism 140 and a controller 150. The transfer mechanism 140 may be a manipulator, and the controller 150 may be a computer with recognition and calculation functions.

[0026] See also Figure 1 The wire feeding mechanism 110 is used to feed the metal wire 200 (such as Figure 4As shown in FIG. 1 , the laser cladding mechanism 120 is used to emit laser to clad the metal wire 200. The wire feeding mechanism 110 and the laser cladding mechanism 120 are both located above the correction mechanism 130.

[0027] See also Figure 2 The correction mechanism 130 includes a conductive wire pair 131, a beam analyzer 132 and a translation member 133. The conductive wire pair 131 is provided with a wire hole 131a, and the wire hole 131a is used for the metal wire 200 to pass through. The conductive wire pair 131 is used to form a contact electrical signal when contacting the metal wire 200. The beam analyzer 132 is arranged on the translation member 133, and is used to obtain the spot information of the laser. The beam analyzer 132 and the conductive wire pair 131 are arranged relative to each other along the axial direction of the wire hole 131a. The translation member 133 is used to drive the beam analyzer 132 to move so as to adjust the relative position of the beam analyzer 132 and the conductive wire pair 131. The spot information includes the centroid position of the spot.

[0028] See also Figure 1 and Figure 2 The transfer mechanism 140 is used to drive the wire feeding mechanism 110 and the correction mechanism 130 to move respectively. The controller 150 is electrically connected to the wire feeding mechanism 110, the conductive wire pair 131, the beam analyzer 132, the transfer mechanism 140 and the laser cladding mechanism 120 respectively. The controller 150 is configured to: obtain the spot information; obtain the position information of the metal wire 200 based on the contact electrical signal; and control the transfer mechanism 140, the wire feeding mechanism 110 and the laser cladding mechanism 120 based on the spot information and the position information of the metal wire 200 to adjust the coaxiality of the laser spot and the metal wire 200.

[0029] In this embodiment, the metal wire 200 output by the wire feeding mechanism 110 is suitable for a directed energy deposition (DED) process, and the cross-section of the metal wire 200 is circular. The position where the conductive wire member 131 contacts the metal wire 200 is the side wall of the wire hole 131a. In this embodiment, the cross-section of the wire hole 131a along its radial direction is roughly circular, the laser spot is roughly annular, and the inner ring area of ​​the laser spot is larger than the cross-sectional area of ​​the metal wire 200.

[0030] It should be noted that the electrical connection between the controller 150 and the wire feeding mechanism 110 means that the controller 150 is electrically connected to at least one component in the wire feeding mechanism 110, and the electrical connection between the controller 150 and the laser cladding mechanism 120 means that the controller 150 is electrically connected to at least one component in the laser cladding mechanism 120. For specific connection instructions, please refer to the following.

[0031] See also Figure 1In some embodiments, the laser cladding device 100 further includes a position detection mechanism 160. The position detection mechanism 160 is adjacent to the wire feeding mechanism 110 and is located above the correction mechanism 130. The position detection mechanism 160 includes an imaging element 161 and a position detection element 162. The imaging element 161 is used to obtain a plane image of the conductive wire alignment element 131 and the beam analyzer 132 in the axial direction of the wire alignment hole 131a. The position detection element 162 is electrically connected to the imaging element 161. The position detection element 162 is used to determine multiple contour spacings between the contour of the wire alignment hole 131a and the contour of the beam analyzer 132 in the radial direction of the wire alignment hole 131a based on the plane image. Among them, the controller 150 is electrically connected to the position detection element 162 and the translation element 133 respectively, and the controller 150 is configured to control the translation element 133 to drive the beam analyzer 132 to move based on multiple contour spacings so that the beam analyzer 132 is coaxial with the wire alignment hole 131a.

[0032] In this embodiment, the profile of the beam profiler 132 refers to the profile of the lens in the beam profiler 132, wherein the cross section of the lens of the beam profiler 132 is smaller than the cross section of the wire hole 131a. The profile of the beam profiler 132 and the profile of the wire hole 131a are both circular, and the equal spacing between the multiple profiles indicates that the beam profiler 132 and the wire hole 131a have been coaxially arranged, and the unequal spacing between the multiple profiles indicates that the beam profiler 132 and the wire hole 131a have not been coaxially arranged.

[0033] See also Figure 2 In this embodiment, the correction mechanism 130 further includes a correction base 134 and a plurality of support rods 135. The correction base 134 and the conductive wire pair 131 are arranged at intervals, and the plurality of support rods are arranged at intervals between the correction base 134 and the conductive wire pair 131. The plurality of support rods 135 are arranged to form a protective area 130a. The translation member 133 is arranged on the correction base 134 and is located in the protective area 130a. The transfer mechanism 140 is also used to drive the correction mechanism 130 to reciprocate between the position detection mechanism 160, the wire feeding mechanism 110 and the laser cladding mechanism 120 through the correction base 134.

[0034] Therefore, the protection area 130 a formed by the plurality of support rods 135 can prevent external components from colliding with the translation member 133 and the beam profiler 132 .

[0035] In this embodiment, the correction base 134 is substantially in the shape of a rectangular parallelepiped, and there are four support rods 135 disposed on the correction base 134 . The four support rods 134 are respectively located at four end corners of the correction base 134 .

[0036] See also Figure 1In some embodiments, the wire feeding mechanism 110 includes a wire outlet member 111, which is used to output the metal wire 200 and to change the angle of the metal wire 200 to adjust the position of the metal wire 200. The laser cladding mechanism 120 includes a focusing member 121, which is used to adjust the spot of the laser. The controller 150 is electrically connected to the wire outlet member 111 and the focusing member 121, respectively. The controller 150 is configured to: control the wire outlet member 111 to adjust the angle of the metal wire 200, and control the focusing member 121 to adjust the spot of the laser.

[0037] Exemplarily, the wire outlet member 111 includes a wire outlet nozzle, a wire outlet conveying member and a wire outlet rotating member. The wire outlet conveying member is connected to the wire 200 to drive the wire 200 to be output from the wire outlet nozzle. The wire outlet rotating member is connected to the wire outlet nozzle and can drive the wire outlet nozzle to rotate to adjust the opening direction of the wire outlet nozzle, thereby changing the position of the wire 200. The focusing member 121 includes a focusing mirror and a focusing driving member. The focusing mirror is used to focus the light beam emitted by the laser to form a light spot. The focusing driving member is used to drive the focusing mirror to rotate to adjust the angle of the focusing mirror, thereby adjusting the landing position of the light spot. Among them, the wire outlet conveying member and the focusing driving member can both be micro motors, and the wire outlet rotating member can be a rotary motor.

[0038] In some embodiments, the wire feeding mechanism 110 moves under the drive of the transfer mechanism 140, so that the metal wire 200 abuts against multiple positions of the wire hole 131a, thereby forming multiple contact electrical signals. Figure 3 , Figure 3 Schematic diagram of the four positions where the metal wire 200 contacts the wire hole 131a. The metal wire 200 contacts the side wall of the wire hole 131a in the order of 1, 2, 3, and 4, and generates four contact electrical signals in sequence. If the position information of the four contact electrical signals is represented by two-dimensional coordinates, the position information of the contact electrical signals corresponding to the metal wire 200 at positions 1, 2, 3, and 4 is (x1, y1), (x2, y2), (x3, y3), and (x4, y4) in sequence. The central position information of the metal wire 200 is ((x3+x4) / 2), (y1+y2) / 2).

[0039] The controller 150 is configured to: obtain the central axis information of the metal wire 200 based on multiple contact electrical signals to form the position information of the metal wire 200; control the transfer mechanism 140 to drive the correction mechanism 130 to move based on the position information of the metal wire 200, so that the wire hole 131a and the metal wire 200 are coaxial; control the focusing member 121 to adjust the laser spot so that the laser spot is coaxial with the wire hole 131a. Among them, the beam analyzer 132 is used to obtain the laser spot information after the wire hole 131a and the metal wire 200 are coaxial. Therefore, through the above settings, the coaxiality of the laser spot and the metal wire 200 can be adjusted by adjusting the position of the laser spot on the basis of keeping the position of the metal wire 200 unchanged.

[0040] Controlling the focusing element 121 to adjust the spot of the laser specifically involves controlling a focusing driving element of the focusing element 121 to adjust the angle of a focusing mirror of the focusing element 121 .

[0041] Specifically, the multiple positions where the metal wire 200 abuts against the wire hole 131 a can be arranged at equal intervals along the circumference of the wire hole 131 a to reduce the difficulty of the controller 150 in converting multiple contact electrical signals into position information of the metal wire 200 .

[0042] In some embodiments, the laser cladding mechanism 120 further includes a spot calibration component 122 and a spot detector 123. The spot calibration component 122 is used to adjust the uniformity of the laser spot. The spot detector 123 is electrically connected to the beam analyzer 132 and the controller 150 respectively. The spot detector 123 is used to determine whether the uniformity of the laser spot meets the preset uniformity requirement. If yes, the spot detector 123 transmits an end signal to the controller 150. If no, the spot detector 123 transmits a spot adjustment signal to the spot calibration component 122, so that the spot calibration component 122 adjusts the uniformity of the laser spot. After the spot calibration component 122 adjusts the uniformity of the laser spot, the spot detector 123 transmits a spot acquisition signal to the beam analyzer 132, so that the beam analyzer 132 acquires the adjusted laser spot information after the wire hole 131a and the metal wire 200 are coaxial. The preset uniformity requirement can be a range value.

[0043] The uniformity of the laser spot will affect the uniformity of the laser cladding of the metal wire 200. The spot detector 123 and the spot calibration component 122 can cooperate with the controller 150 to determine whether the uniformity of the laser spot meets the preset uniformity requirements to improve the uniformity of the laser spot. In some embodiments, the wire feeding mechanism 110 moves under the drive of the transfer mechanism 140 so that the metal wire 200 abuts against multiple positions of the wire hole 131a, thereby forming multiple contact electrical signals, and the controller 150 is configured to: obtain the central axis information of the metal wire 200 based on the multiple contact electrical signals to form the position information of the metal wire 200; control the transfer mechanism 140 to drive the correction mechanism 130 to move based on the spot information so that the laser spot and the wire hole 131a are coaxial; control the wire outlet 111 to adjust the angle of the metal wire 200 based on the position information of the metal wire 200, so that the metal wire 200 is coaxial with the wire hole 131a. Among them, the transfer mechanism 140 is used to drive the metal wire 200 to abut against multiple positions of the wire hole 131a after the laser spot and the wire hole 131a are coaxial. Therefore, through the above settings, the coaxiality of the laser spot and the metal wire 200 can be adjusted by adjusting the angle of the metal wire 200 on the basis of the unchanged position of the spot.

[0044] Specifically, the transfer mechanism 140 can absorb or clamp the correction base 134 to drive the correction mechanism 130 to move, and the controller 150 controls the wire outlet rotating member to drive the wire outlet nozzle to rotate, thereby adjusting the opening direction of the wire outlet nozzle to adjust the angle of the metal wire 200.

[0045] See also Figure 1 In some embodiments, the wire feeding mechanism 110 further includes a wire 200 calibration member 112 and a wire 200 detection member 113. The wire 200 calibration member 112 is used to adjust the straightness of the wire 200. The wire 200 detection member 113 is electrically connected to the controller 150 and is used to determine whether the straightness of the wire 200 meets the preset requirements. If yes, the wire 200 detection member 113 transmits an end signal to the controller 150; if no, the wire 200 detection member 113 transmits an adjustment signal to the wire 200 calibration member 112, so that the wire 200 calibration member 112 adjusts the straightness of the wire 200. After adjusting the straightness of the wire 200, the wire 200 calibration member 112 transmits a wire 200 acquisition signal to the controller 150, so that the controller 150 controls the transfer mechanism 140 to drive the wire feeding mechanism 110 to move so that the adjusted wire 200 contacts the conductive wire member 131.

[0046] The straightness of the metal wire 200 will affect the uniformity of the metal wire 200 being clad. The metal wire 200 calibration component 112 and the metal wire 200 detection component 113 can cooperate with the controller 150 to determine whether the straightness of the metal wire 200 meets the preset straightness requirement to improve the straightness of the metal wire 200.

[0047] In some embodiments, the laser cladding device 100 further includes an optical module 170. The optical module 170 is fixedly disposed on the side of the beam analyzer 132 facing the wire hole 131a, and is used to correct the laser beam, wherein the optical module 170 includes at least one of a polarizer, a filter, and an attenuator.

[0048] For example, see Figure 4 , Figure 4 It is a side view of the laser spot 300, the metal wire 200, the conductive wire alignment member 131, the optical module 170, the beam analyzer 132 and the translation member 133. The beam analyzer 132 and the wire alignment hole 131a are coaxial.

[0049] Therefore, the laser beam can be corrected through the optical module 170 to expand the application range of the laser. For example, the polarizer can be applied to multi-mode lasers and can be analyzed for specific polarization modes, especially corresponding to specific modes. The attenuator can be used to reduce the input light power to protect the photosensitive components in the correction mechanism 130. The filter can be applied to DEDs with more than two beams and can filter specific beams.

[0050] In the above-mentioned laser cladding device 100, the beam analyzer 132 can be moved relative to the conductive wire-aligning member 131 driven by the translation member 133, so that the beam analyzer 132 and the wire-aligning hole 131a are coaxial. On this basis, the beam analyzer 132 and the wire-aligning hole 131a are relatively fixed. The position of the laser spot can be adjusted first to make the laser spot coaxial with the wire-aligning hole 131a, and then the position of the metal wire 200 can be adjusted to make the metal wire 200 coaxial with the wire-aligning hole 131a, thereby adjusting the coaxiality of the metal wire 200 and the laser spot. Alternatively, the position of the metal wire 200 can be adjusted first to make the metal wire 200 coaxial with the wire-aligning hole 131a, and then the position of the laser spot can be adjusted to make the laser spot coaxial with the wire-aligning hole 131a, thereby adjusting the coaxiality of the metal wire 200 and the laser spot. Compared with the visual correction method, the above-mentioned laser cladding device 100 improves the correction efficiency and correction accuracy of the coaxiality of the laser spot and the metal wire 200.

[0051] The embodiment of the present application also provides a correction method, which uses the above-mentioned laser cladding device 100 to correct the coaxiality of the metal wire 200 and the laser spot. The correction method includes: controlling the translation member 133 through the controller 150 to drive the beam analyzer 132 to move, so that the wire hole 131a and the beam analyzer 132 are coaxial; controlling the transfer mechanism 140 through the controller 150 to drive the correction mechanism 130 to move below the wire feeding mechanism 110 and the laser cladding mechanism 120; obtaining the spot information and the position information of the metal wire 200 through the controller 150; based on the spot information and the position information of the metal wire 200, the controller 150 controls the transfer mechanism 140, the wire feeding mechanism 110 and the laser cladding mechanism 120 to operate respectively to adjust the coaxiality of the laser spot and the metal wire 200.

[0052] The above correction methods can be divided into two types. The first is to adjust the coaxiality of the laser spot and the metal wire 200 by adjusting the position of the laser spot while keeping the position of the laser spot unchanged. The second is to adjust the coaxiality of the laser spot and the metal wire 200 by adjusting the angle of the metal wire 200 while keeping the position of the metal wire 200 unchanged.

[0053] Specifically, see Figure 5 , the first correction method includes: S110 , the transfer mechanism 140 drives the correction mechanism 130 to move to the bottom of the position detection mechanism 160 .

[0054] S120, the imaging component 161 obtains the planar image of the conductive wire-aligning component 131 and the beam analyzer 132 in the axial direction of the wire-aligning hole 131a, and the position detecting component 162 obtains and determines multiple contour distances between the contour of the wire-aligning hole 131a and the contour of the beam analyzer 132 in the radial direction of the wire-aligning hole 131a based on the planar image.

[0055] S130, the controller 150 controls the translation member 133 to drive the beam profiler 132 to move based on the multiple profile intervals, so that the beam profiler 132 and the wire hole 131a are coaxial.

[0056] S140 , the controller 150 controls the transfer mechanism 140 to drive the correction mechanism 130 to move below the laser cladding mechanism 120 .

[0057] S150, the laser cladding mechanism 120 emits laser to the beam analyzer 132, and the beam analyzer 132 obtains the spot information of the laser.

[0058] S160, the controller 150 controls the focusing element 121 to adjust the laser spot so that the laser spot is coaxial with the thread hole 131a.

[0059] S170, the controller 150 controls the transfer mechanism 140 to drive the wire feeding mechanism 110 to move, and the wire delivery member drives the metal wire 200 from the wire outlet nozzle to pass through the wire hole 131a.

[0060] S180, the controller 150 controls the transfer mechanism 140 to drive the wire feeding mechanism 110 to move, so that the metal wire 200 abuts against multiple positions of the wire hole 131a, thereby forming multiple contact electrical signals.

[0061] S190, the controller 150 obtains the central axis information of the metal wire 200 based on the multiple contact electrical signals to form the position information of the metal wire 200, and controls the transfer mechanism 140 to drive the correction mechanism 130 to move based on the position information of the metal wire 200, so that the wire hole 131a and the metal wire 200 are coaxial.

[0062] S200, the metal wire 200 detection component 113 determines whether the straightness of the metal wire 200 meets the preset requirements. If yes, the metal wire 200 detection component 113 transmits an end signal to the controller 150. If not, the metal wire 200 detection component 113 transmits an adjustment signal to the metal wire 200 calibration component 112, so that the metal wire 200 calibration component 112 adjusts the straightness of the metal wire 200. After adjusting the straightness of the metal wire 200, the metal wire 200 calibration component 112 transmits the acquisition signal of the metal wire 200 to the controller 150, so that the controller 150 controls the transfer mechanism 140 to drive the wire feeding mechanism 110 to move so that the adjusted metal wire 200 contacts the conductive wire member 131.

[0063] For further information, see Figure 6 , the second correction method includes: S001 , the transfer mechanism 140 drives the correction mechanism 130 to move to the bottom of the position detection mechanism 160 .

[0064] S002, the imaging component 161 obtains the planar image of the conductive wire-aligning component 131 and the beam analyzer 132 in the axial direction of the wire-aligning hole 131a, and the position detecting component 162 obtains and determines multiple contour distances between the contour of the wire-aligning hole 131a and the contour of the beam analyzer 132 in the radial direction of the wire-aligning hole 131a based on the planar image.

[0065] S003, the controller 150 controls the translation member 133 to drive the beam profiler 132 to move based on the multiple profile intervals, so that the beam profiler 132 and the wire hole 131a are coaxial.

[0066] S004 , the controller 150 controls the transfer mechanism 140 to drive the correction mechanism 130 to move below the wire feeding mechanism 110 .

[0067] S005, the controller 150 controls the transfer mechanism 140 to drive the wire feeding mechanism 110 to move, and the wire delivery member drives the metal wire 200 from the wire outlet nozzle to pass through the wire hole 131a.

[0068] S006, the controller 150 controls the transfer mechanism 140 to drive the wire feeding mechanism 110 to move, so that the metal wire 200 abuts against multiple positions of the wire hole 131a, thereby forming multiple contact electrical signals.

[0069] S007, the controller 150 obtains the central axis information of the metal wire 200 based on the multiple contact electrical signals to form the position information of the metal wire 200, and controls the transfer mechanism 140 to drive the correction mechanism 130 to move based on the position information of the metal wire 200, so that the wire hole 131a and the metal wire 200 are coaxial.

[0070] S008, the laser cladding mechanism 120 emits laser to the beam analyzer 132, and the beam analyzer 132 obtains the spot information of the laser.

[0071] S009, the controller 150 controls the focusing element 121 to adjust the laser spot so that the laser spot is coaxial with the thread hole 131a.

[0072] S010, the spot detector 123 determines whether the uniformity of the laser spot meets the preset uniformity requirement. If yes, the spot detector 123 transmits an end signal to the controller 150. If not, the spot detector 123 transmits a spot adjustment signal to the spot calibration component 122, so that the spot calibration component 122 adjusts the uniformity of the laser spot. After adjusting the uniformity of the laser spot, the spot calibration component 122 transmits the acquired spot signal to the beam analyzer 132, so that the beam analyzer 132 acquires the adjusted laser spot after the wire hole 131a and the metal wire 200 are coaxial.

[0073] In the above correction method, the position of the laser spot can be adjusted first so that the laser spot is coaxial with the wire hole 131a, and then the position of the metal wire 200 is adjusted so that the metal wire 200 is coaxial with the wire hole 131a, thereby adjusting the coaxiality of the metal wire 200 and the laser spot. Alternatively, the position of the metal wire 200 can be adjusted first so that the metal wire 200 is coaxial with the wire hole 131a, and then the position of the laser spot is adjusted so that the laser spot is coaxial with the wire hole 131a, thereby adjusting the coaxiality of the metal wire 200 and the laser spot. Compared with the visual correction method, the above correction method improves the correction efficiency and correction accuracy of the coaxiality of the laser spot and the metal wire 200.

[0074] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present application.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A laser cladding device, characterized in that: include: A wire feeding mechanism for feeding the metal wire; A laser cladding mechanism, used for emitting laser to clad the metal wire; A correction mechanism, comprising a conductive wire-matching member, a beam analyzer and a translation member, wherein the conductive wire-matching member is provided with a wire-matching hole, wherein the wire-matching hole is used for the metal wire to pass through, and the conductive wire-matching member is used for forming a contact electrical signal when contacting the metal wire, and the beam analyzer is provided on the translation member for obtaining the spot information of the laser, and the beam analyzer and the conductive wire-matching member are arranged relative to each other along the axial direction of the wire-matching hole, and the translation member is used for driving the beam analyzer to move so as to adjust the relative position of the beam analyzer and the conductive wire-matching member; A transfer mechanism, used for driving the wire feeding mechanism and the correction mechanism to move respectively; A controller is electrically connected to the wire feeding mechanism, the conductive wire pair, the beam analyzer, the transfer mechanism and the laser cladding mechanism, and the controller is configured as follows: Acquiring the light spot information; acquiring position information of the metal wire based on the contact electrical signal; The transfer mechanism, the wire feeding mechanism and the laser cladding mechanism are controlled based on the light spot information and the position information of the metal wire to adjust the coaxiality of the laser light spot and the metal wire.

2. The laser cladding device according to claim 1, characterized in that: Also includes: A position detection mechanism is arranged adjacent to the wire feeding mechanism, the position detection mechanism comprises an imaging element and a position detection element, the imaging element is used to obtain a plane image of the conductive wire alignment element and the beam profiler in the axial direction of the wire alignment hole, the position detection element is electrically connected to the imaging element, and the position detection element is used to determine a plurality of contour spacings between the contour of the wire alignment hole and the contour of the beam profiler in the radial direction of the wire alignment hole based on the plane image; Wherein, the controller is electrically connected to the position detection member and the translation member respectively, and the controller is configured to control the translation member to drive the light beam analyzer to move based on a plurality of the contour intervals so as to make the light beam analyzer coaxial with the wire hole.

3. The laser cladding device according to claim 2, characterized in that: The correction mechanism also includes: A correction base is arranged relative to and spaced from the conductive wire pair; A plurality of support rods are arranged at intervals between the correction base and the conductive wire pair, the plurality of support rods are arranged to form a protection area, the translation member is arranged on the correction base, and the translation member is located in the protection area; Wherein, the transfer mechanism is also used to drive the correction mechanism to reciprocate between the position detection mechanism, the wire feeding mechanism and the laser cladding mechanism through the correction base.

4. The laser cladding device according to claim 1, characterized in that: The wire feeding mechanism includes a wire outlet component, which is used to output the metal wire and change the angle of the metal wire to adjust the position of the metal wire. The laser cladding mechanism includes a focusing component, which is used to adjust the spot of the laser. The controller is electrically connected to the wire outlet component and the focusing component respectively, and the controller is configured to: control the wire outlet component to adjust the angle of the metal wire, and control the focusing component to adjust the spot of the laser.

5. The laser cladding device according to claim 4, characterized in that: The wire feeding mechanism moves under the drive of the transfer mechanism so that the metal wire abuts against multiple positions of the wire-matching hole, thereby forming multiple contact electrical signals, and the controller is configured as follows: Obtaining central axis information of the metal wire based on a plurality of the contact electrical signals to form position information of the metal wire; Based on the position information of the metal wire, the transfer mechanism is controlled to drive the correction mechanism to move, so that the wire hole and the metal wire are coaxial; Controlling the focusing element to adjust the laser spot so that the laser spot is coaxial with the threading hole; Wherein, the beam analyzer is used to obtain the spot information of the laser after the wire hole and the metal wire are coaxial.

6. The laser cladding device according to claim 5, characterized in that: The laser cladding mechanism also includes: A light spot calibration component, used to adjust the uniformity of the light spot of the laser; A spot detector is electrically connected to the beam analyzer and the controller, respectively, and is used to determine whether the uniformity of the laser spot meets the preset uniformity requirement. If yes, the spot detector transmits an end signal to the controller; if not, the spot detector transmits a spot adjustment signal to the spot calibration component, so that the spot calibration component adjusts the uniformity of the laser spot. After the spot calibration component adjusts the uniformity of the laser spot, the spot detector transmits a spot acquisition signal to the beam analyzer, so that the beam analyzer obtains the adjusted laser spot information after the wire hole and the metal wire are coaxial.

7. The laser cladding device according to claim 4, characterized in that: The wire feeding mechanism moves under the drive of the transfer mechanism so as to abut against multiple positions of the wire holes, thereby forming multiple contact electrical signals, and the controller is configured as follows: Obtaining central axis information of the metal wire based on a plurality of the contact electrical signals to form position information of the metal wire; Based on the light spot information, the transfer mechanism is controlled to drive the correction mechanism to move, so that the light spot of the laser is coaxial with the wire hole; Based on the position information of the metal wire, the wire outlet member is controlled to adjust the angle of the metal wire so that the metal wire is coaxial with the wire hole; Wherein, the transfer mechanism is used to drive the metal wire to abut against multiple positions of the wire hole after the laser spot and the wire hole are coaxial.

8. The laser cladding device according to claim 7, characterized in that: The wire feeding mechanism also includes: A metal wire calibration member, used for adjusting the straightness of the metal wire; A metal wire detection component is electrically connected to the controller and is used to determine whether the straightness of the metal wire meets the preset straightness requirement. If yes, the metal wire detection component transmits an end signal to the controller; if not, the metal wire detection component transmits an adjustment signal to the metal wire calibration component to enable the metal wire calibration component to adjust the straightness of the metal wire. After adjusting the straightness of the metal wire, the metal wire calibration component transmits a metal wire acquisition signal to the controller, so that the controller controls the transfer mechanism to drive the wire feeding mechanism to move so that the adjusted metal wire contacts the conductive pair of wire components.

9. The laser cladding device according to claim 1, characterized in that: Also includes: An optical module is fixedly arranged on a side of the beam analyzer facing the wire hole, and is used to correct the laser, wherein the optical module includes at least one of a polarizing element, a filtering element, and an attenuating element.

10. A correction method, using the laser cladding device according to any one of claims 1 to 9, for correcting the coaxiality of a metal wire and a laser spot, characterized in that: The correction method comprises: The controller controls the translation member to drive the beam analyzer to move, so that the wire hole and the beam analyzer are coaxial; The controller controls the transfer mechanism to drive the correction mechanism to move below the wire feeding mechanism and the laser cladding mechanism; Acquiring the light spot information and the position information of the metal wire through the controller; Based on the light spot information and the position information of the metal wire, the controller controls the transfer mechanism, the wire feeding mechanism and the laser cladding mechanism to operate respectively to adjust the coaxiality of the laser light spot and the metal wire.

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