CN107043932B - Double-laser strengthening coating device - Google Patents

Abstract

The invention discloses a double-laser strengthening coating device, comprising a fixed platform, a laser platform, a first laser head, a first laser bracket, a second laser head, a second laser bracket, a first branch chain and a second branch chain, The fixed ends of the first branch chain and the second branch chain are connected to the fixed platform, and the output ends of the first branch chain and the second branch chain are connected to the laser platform; The vertical mounting holes and the inclined mounting holes are respectively used to install the first laser head and the second laser head. The invention adopts a symmetrical structure design, which has the advantages of flexible movement, strong bearing capacity and high coating efficiency; and adopts the structure of double laser heads, since the first laser head and the second laser head form a certain angle, the first laser head and the second laser head form a certain angle. The irradiation range of the second laser head is different. Compared with the irradiation range of the single laser head, the dual laser head has a larger irradiation range, and the two laser heads operate at the same time, which greatly improves the efficiency of laser enhanced coating.

Description

A dual-laser strengthening coating device

technical field

The invention relates to the technical field of laser strengthening coating, and more particularly, to a double laser strengthening coating device.

Background technique

As an important technology of laser surface treatment, laser coating uses low-cost materials as the base material to make high-performance materials, which can maximize the use of rare metal materials and reduce manufacturing costs. With the wide range of laser coating technology, its laser coating equipment has also been continuously developed.

The Chinese invention patent application number 201510138715.8 discloses a microsphere omnidirectional motion coating device, which uses two motors to drive the workpiece to move along a certain horizontal direction and rotate around the axis, so as to uniformly coat and strengthen the microspheres. The application number is 201410421936.1 Chinese invention patent discloses a method and device for a ring-shaped laser belt to impact the wall of a hole. The laser beam output from the laser is used to strengthen the hole wall of a hole-like workpiece. The laser is fixed and the worktable drives the workpiece along the hole. axial movement. The application number is 201180033905.3 Chinese invention patent discloses a method and device for coating a solid coating. A fixed radiation source is used to emit a beam of light to coat the sample, and a single drive device drives the workpiece to move in the X/Y axis direction . However, in the above three inventions, a single laser beam is used to strengthen the workpiece, and the laser source is stationary, and the workpiece movement has only two degrees of freedom. At the same time, the laser-strengthened coated workpieces are all for workpieces with simple shapes. It is difficult to achieve enhanced coating on some workpieces with complex surface features.

In view of the above shortcomings, it is particularly important to design and develop a dual-laser strengthening coating device to make up for the above shortcomings.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the above problems and provide a dual-laser strengthening coating device, which can strengthen coating some workpieces with complex curved surface features, and has a wide strengthening coating range and high strengthening coating efficiency.

The present invention achieves the above object through the following technical solutions: a double laser enhanced coating device, comprising a fixed platform, a laser platform, a first laser head, a first laser support, a second laser head, a second laser support, a first laser support chain and a second branched chain, the fixed ends of the first branched chain and the second branched chain are connected to the fixed platform, and the output ends of the first branched chain and the second branched chain are connected to the laser platform; the first branched chain is provided with There are two, the second branch is provided with one; the first laser bracket and the second laser bracket are fixed on the laser platform, the first laser bracket and the second laser bracket are fixedly connected, the first laser bracket and the second laser bracket are fixed The end faces of the brackets that are attached to each other form a vertical installation hole and an inclined installation hole for installing the first laser head and the second laser head respectively, and the first laser head is installed in the vertical installation hole formed by the first laser bracket and the second laser bracket. Inside, the second laser head is installed in the inclined installation hole formed by the first laser bracket and the second laser bracket.

The first branch chain includes a first motor, a first coupling, a first lead screw, a first support bearing, a first lead screw nut, a first fixing bracket, a first moving bracket and a first connecting rod; the The first motor is fixedly connected to the fixed platform through bolts, and the output end of the first motor is connected to the first lead screw through the first coupling; the top of the first fixed bracket is fixedly connected to the fixed platform through bolts; One end of a lead screw is connected to the first coupling, and the other end of the first lead screw is connected to a first support bearing, the first support bearing is embedded in the lower end groove of the first fixed bracket; the upper end of the first movable bracket Bolts are fixedly connected with the first lead screw nut, and the lower end of the first moving bracket is fixed with a connecting frame; the connecting frame is connected to the first moving support through a first connecting rod, and the lower end of the connecting frame is connected to the first moving bracket through a moving end connecting piece. The upper end of a connecting rod; the moving end connecting piece includes a moving end upper connecting piece, a moving end middle piece and a moving end lower connecting piece; one end of the moving end upper connecting piece is fixedly connected with the lower end of the connecting frame, and the moving end upper connecting piece is fixedly connected The other end of the connecting piece is hinged with the moving end middle piece; one end of the moving end lower connecting piece is hinged with the moving end middle piece, and the other end of the moving end lower connecting piece and the upper end of the first connecting rod are fixedly connected by fastening screws, The direction of the hinge axis between the upper connecting piece of the moving end, the lower connecting piece of the moving end and the middle piece of the moving end are perpendicular to each other; the lower end of the first link is connected to the laser platform through a platform connecting piece; the platform connecting piece includes a platform an upper connecting piece, a platform middle piece and a platform lower connecting piece; one end of the platform upper connecting piece is connected to the lower end of the first connecting rod through a tightening screw, and the other end of the platform upper connecting piece is hinged with the platform middle piece; One end of the connecting piece is hinged with the platform middle piece, and the other end of the platform lower connecting piece is connected with the shaft fixed on the laser platform through tightening screws. The axes are perpendicular to each other.

The second branch chain includes a second motor, a second coupling, a second lead screw, a second support bearing, a second lead screw nut, a second fixed bracket, a second moving bracket, a rotating motor, and a third coupling and the second connecting rod; the second motor is fixedly connected to the fixed platform by bolts, and the output end of the second motor is connected to the second lead screw through the second coupling; the top of the second fixing bracket is fixed by bolts connected to the fixed platform; one end of the second lead screw is connected to the second coupling, and the other end of the second lead screw is connected to the second support bearing; the second support bearing is embedded in the bottom groove of the second fixed bracket inside; the second moving bracket and the second screw nut are fixedly connected by bolts, and the rotating motor bracket is fixedly connected to the second moving bracket by bolts; the rotating motor is fixed on the inner side of the rotating motor support, and the rotating motor The output end of the second connecting rod is connected to the second connecting rod through a third coupling; one end of the second connecting rod is connected to the third coupling, and the other end of the second connecting rod is connected to the laser platform through a platform connecting piece.

Further, the vertical installation hole is perpendicular to the fixed platform, and the plane included angle between the vertical installation hole and the inclined installation hole is 15 degrees or 165 degrees.

Further, a through hole is provided in the middle of the laser platform, the first laser bracket and the second laser bracket pass through the through hole in the middle of the laser platform, and the first laser head and the second laser head both pass through the laser platform. The through-holes emit the laser light toward the bottom of the laser platform.

Further, the second motor is coaxial with the output shaft of the rotating electrical machine, and the first motor and the second motor are of the same type.

Further, the two first branches and one second branch are connected to the fixed platform and the laser platform, and the upper and lower ends of the two first branches and one second branch are connected to the fixed platform and the laser platform. All are distributed in an equilateral triangle.

Further, two first guide rails are provided on both inner sides of the first fixing bracket, and the first slider sleeved on the first guide rail is fixedly connected to both sides of the first lead screw nut by bolts.

Further, two second guide rails are provided on both inner sides of the second fixing bracket, and the second sliding block sleeved on the second guide rails is fixedly connected to both sides of the second lead screw nut by bolts.

Further, the output ends of the two first motors are respectively provided with a first encoder and a second encoder, the output ends of the second motors are provided with a third encoder, and the output ends of the rotary motors are provided with a fourth encoder.

The working process of the present invention is as follows: the first motor of the two first branch chains and the second motor of the second branch chain do not move, the rotary motor moves, and the laser platform rotates with the second branch chain as the axis; The first motor of the two first branch chains and the second motor of the second branch chain move synchronously, so as to realize the linear movement of the laser platform and the rotation of two degrees of freedom in space. Through the coordinated movement of the first motor, the second motor and the rotating motor, the laser head on the laser platform can move at any angle. At the same time, a first laser head and a second laser head are arranged on the laser platform. With the spatial movement of the laser platform, the first laser head can move within a certain range. The included angle, the second laser head can move in other ranges. The first laser head and the second laser head operate at the same time, and can carry out laser strengthening coating on workpieces with complex curved surface features.

The control system of the present invention includes a PLC controller, four servo drivers, three servo motors and four encoders; the four servo drivers are respectively the first servo driver, the second servo driver, the third servo driver and the fourth servo driver Driver; three servo motors are the first motor, the second motor and the rotary motor; the four encoders are the first encoder, the second encoder, the third encoder and the fourth encoder respectively; the output of the PLC controller The terminals are respectively connected in parallel with the input terminals of the first servo driver, the second servo driver, the third servo driver and the fourth servo driver; the output terminal of the first servo driver is connected to the input terminal of the first motor; the first servo driver is connected to the input terminal of the first motor. One end of the encoder is connected to the first motor, and the other end of the first encoder is connected to the first servo driver; the output end of the second servo driver is connected to the input end of another first motor; the second encoder One end of the encoder is connected to the first motor, and the other end of the second encoder is connected to the second servo driver; the output end of the third servo driver is connected to the input end of the second motor; one end of the third encoder is connected to the second servo driver. The second motor is connected, and the other end of the third encoder is connected with the third servo driver. The output end of the fourth servo driver is connected to the input end of the rotary motor; one end of the fourth encoder is connected to the rotary motor, and the other end of the fourth encoder is connected to the fourth servo driver.

The PLC controller can obtain the corresponding rotation angles of the first motor, the second motor and the rotating motor through arithmetic operation according to the three-dimensional coordinate value of the input workpiece, and then calculate the corresponding pulse number and pulse frequency according to the motor rotation angle; The first servo driver, the second servo driver, the third servo driver and the fourth servo driver receive the pulse signal sent by the PLC controller and control the operation of the first motor, the second motor and the rotating motor respectively; the encoder collects the rotation angle of the motor And the speed information, and send the collected information to the servo driver, the servo driver can adjust the speed and rotation angle of the corresponding motor by comparing the initial information and feedback information to ensure that the motor reaches the set rotation speed and rotation angle.

The beneficial effects of the present invention are as follows: the present invention adopts a symmetrical structure design, which has the advantages of flexible movement, strong bearing capacity and high coating efficiency; by adopting the structure of double laser heads, since the first laser head and the second laser head are in a certain clamp The irradiation range of the first laser head and the second laser head are different. Compared with the irradiation range of the single laser head, the dual laser head has a larger irradiation range, and the two laser heads operate at the same time, which greatly improves the laser enhancement coating. In addition, four motors are used as the power source, so that the laser head on the laser platform can realize multi-degree-of-freedom motion in space, and can carry out laser-enhanced coating on the workpiece with spatially complex curved surface features.

Description of drawings

FIG. 1 is an overall structural diagram of a dual-laser strengthening coating device of the present invention.

Figure 2 is a schematic structural diagram of the first branch of the present invention.

Figure 3 is a schematic structural diagram of the second branch of the present invention.

4 is a structural diagram of the laser platform when the vertical mounting hole and the inclined mounting hole are at 15 degrees according to the present invention.

FIG. 5 is a structural diagram of the laser platform when the vertical mounting hole and the inclined mounting hole are at 165 degrees according to the present invention.

Figure 6 is a partial cross-sectional view of the laser platform of the present invention.

In the figure, 1-workpiece, 2-laser platform, 3-platform lower part, 4-platform middle part, 5-platform upper part, 6-first connecting rod, 7-moving end lower part, 8-connection Frame, 9-first support bearing, 10-first moving bracket, 11-first fixed bracket, 12-first motor, 13-fixed platform, 14-second motor, 15-second coupling, 16- Second guide rail, 17-second screw nut, 18-second fixed bracket, 19-second moving bracket, 20-rotating motor bracket, 21-rotating motor, 22-third coupling, 23-second connection Rod, 24-second laser head, 25-first laser bracket, 26-first laser head, 27-first guide rail, 28-first slider, 29-first coupling, 30-first lead screw , 31 - the first screw nut, 32 - the upper part of the mobile end, 33 - the middle part of the mobile end, 34 - the second slider, 35 - the second lead screw, 36 - the second laser bracket, 37 - the second support bearing.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings:

As shown in FIGS. 1 to 6, a dual-laser strengthening coating device includes a fixed platform 13, a laser platform 2, a first laser head 26, a first laser bracket 25, a second laser head 24, a second laser bracket 36, The first branch chain and the second branch chain, the fixed ends of the first branch chain and the second branch chain are connected to the fixed platform 13, and the output ends of the first branch chain and the second branch chain are connected to the laser platform 2; There are two first branch chains and one second branch chain; the first laser bracket 25 and the second laser bracket 36 are both fixed on the laser platform 2 , and the first laser bracket 25 and the second laser bracket 36 are fixed Connection, the end faces of the first laser bracket 25 and the second laser bracket 36 that are attached to each other constitute vertical mounting holes and inclined mounting holes for installing the first laser head 26 and the second laser head 24 respectively, and the first laser head 26 is installed. In the vertical installation hole formed by the first laser bracket 25 and the second laser bracket 36 , the second laser head 24 is installed in the inclined installation hole formed by the first laser bracket 25 and the second laser bracket 36 . The workpiece 1 is disposed directly under the laser platform 2 , and the lasers emitted by the first laser head 26 and the second laser head 24 are both directly irradiated on the workpiece 1 .

The first branch chain includes a first motor 12, a first coupling 29, a first lead screw 30, a first support bearing 9, a first lead screw nut 31, a first fixed bracket 11, a first moving bracket 10 and The first connecting rod 6; the first motor 12 is fixedly connected to the fixed platform 13 through bolts, and the output end of the first motor 12 is connected to the first lead screw 30 through the first coupling 29; the first fixing bracket 11 The top of the first lead screw 30 is connected to the fixed platform 13 by bolts; one end of the first lead screw 30 is connected to the first coupling 29, and the other end of the first lead screw 30 is connected to the first support bearing 9, and the first support bearing 9 is embedded in the lower end groove of the first fixed bracket 11; the upper end of the first movable bracket 10 is fixedly connected with the first lead screw nut 31 through bolts, and the lower end of the first movable bracket 10 is fixed with a connecting frame 8; the connection The frame 8 is connected to the first moving bracket 10 through the first connecting rod 6, and the lower end of the connecting frame 8 is connected to the upper end of the first connecting rod 6 through the moving end connecting piece; the moving end connecting piece includes the moving end upper connecting piece 32, The moving end middle piece 33 and the moving end lower connecting piece 7; one end of the moving end upper connecting piece 32 is fixedly connected with the lower end of the connecting frame 8, and the other end of the moving end upper connecting piece 32 is hinged with the moving end middle piece 33; One end of the lower connecting piece 7 at the moving end is hinged with the middle piece 33 at the moving end, and the other end of the lower connecting piece 7 at the moving end and the upper end of the first connecting rod 6 are fixedly connected by tightening screws. The direction of the hinge axis between the lower connecting piece 7 of the moving end and the middle piece 33 of the moving end are perpendicular to each other; the lower end of the first connecting rod 6 is connected to the laser platform 2 through the platform connecting piece; the platform connecting piece includes the upper platform connecting piece 5 , a platform middle piece 4 and a platform lower piece 3; one end of the platform upper piece 5 is connected to the lower end of the first connecting rod 6 through a tightening screw, and the other end of the platform upper piece 5 is hinged with the platform middle piece 4; One end of the platform lower connector 3 is hinged with the platform middle component 4, the other end of the platform lower connector 3 is connected with the shaft fixed on the laser platform 2 through fastening screws, and the platform upper connector 5 and the platform lower connector are connected. The direction of the hinge axis between 3 and the platform middle piece 4 is perpendicular to each other.

The second branch chain includes a second motor 14, a second coupling 15, a second lead screw 35, a second support bearing 37, a second lead screw nut 17, a second fixed bracket 18, a second moving bracket 19, The rotating motor 21 , the third coupling 22 and the second connecting rod 23 ; the second motor 14 is fixedly connected to the fixed platform 13 by bolts, and the output end of the second motor 14 is connected to the second motor 14 through the second coupling 15 The lead screw 35; the top of the second fixing bracket 18 is fixedly connected to the fixed platform 13 by bolts; one end of the second lead screw 35 is connected to the second coupling 15, and the other end of the second lead screw 35 is connected to the first Two supporting bearings 37; the second supporting bearing 37 is embedded in the bottom groove of the second fixing bracket 18; the second moving bracket 19 and the second screw nut 17 are fixedly connected by bolts, and the rotating motor bracket 20 The rotary motor 21 is fixed on the inner side of the rotary motor bracket 20, and the output end of the rotary motor 21 is connected to the second connecting rod 23 through the third coupling 22; One end of the second connecting rod 23 is connected to the third coupling 22 , and the other end of the second connecting rod 23 is connected to the laser platform 2 through the platform connecting piece.

The vertical mounting holes are perpendicular to the fixing platform 13, and the plane included angle between the vertical mounting holes and the inclined mounting holes is 15 degrees or 165 degrees.

The middle of the laser platform 2 is provided with a through hole, the first laser bracket 25 and the second laser bracket 36 both pass through the through hole in the middle of the laser platform 2, and the first laser head 26 and the second laser head 24 pass through. The through hole on the laser platform 2 emits laser light toward the bottom of the laser platform 2 .

The second motor 14 is coaxial with the output shaft of the rotating electrical machine 21 , and the first motor 12 and the second motor 14 are the same type of motor.

The two first branches and one second branch are connected to the fixed platform 13 and the laser platform 2, and the upper and lower ends of the two first branches and one second branch are connected to the fixed platform 13 and the laser platform 2 The points are distributed in an equilateral triangle.

Two first guide rails 27 are disposed on both inner sides of the first fixing bracket 11 , and the first sliding block 28 sleeved on the first guide rail 27 is fixedly connected to both sides of the first lead screw nut 31 by bolts.

Two second guide rails 16 are disposed on both inner sides of the second fixing bracket 18 , and the second sliding block 34 sleeved on the second guide rail 16 is fixedly connected to both sides of the second lead screw nut 17 by bolts.

The output ends of the two first motors 12 are respectively provided with a first encoder and a second encoder, the output ends of the second motors 14 are provided with a third encoder, and the output ends of the rotary motor 21 are provided with a fourth encoder.

The working process of the present invention is as follows: the first motor 12 of the two first branches and the second motor 14 of the second branch do not move, the rotary motor 21 moves, and the laser platform 2 rotates with the second branch as the axis ; The rotating motor 21 does not move, the first motor 12 of the two first branches and the second motor 14 of the second branch move synchronously to realize the linear movement of the laser platform 2 and the rotation of two degrees of freedom in space. Through the coordinated movement of the first motor 12 , the second motor 14 and the rotary motor 21 , the laser head on the laser platform 2 can move at any angle. At the same time, the laser platform 2 is provided with a first laser head 26 and a second laser head 24. With the spatial movement of the laser platform 2, the first laser head 26 can move within a certain range. A laser head 26 is at a certain angle, and the second laser head 24 can move in other ranges. The first laser head 26 and the second laser head 24 operate at the same time, and can perform laser strengthening coating on workpieces with complex curved surface features.

The control system of the present invention includes a PLC controller, four servo drivers, three servo motors and four encoders; the four servo drivers are respectively the first servo driver, the second servo driver, the third servo driver and the fourth servo driver Driver; three servo motors are the first motor 12, the second motor 14 and the rotary motor 21 respectively; the four encoders are the first encoder, the second encoder, the third encoder and the fourth encoder respectively; PLC control The output end of the driver is respectively connected in parallel with the input end of the first servo driver, the second servo driver, the third servo driver and the fourth servo driver; the output end of the first servo driver is connected with the input end of the first motor 12; One end of the first encoder is connected to the first motor 12, and the other end of the first encoder is connected to the first servo driver; the output end of the second servo driver is connected to the input end of another first motor 12; One end of the second encoder is connected to the first motor 12, and the other end of the second encoder is connected to the second servo driver; the output end of the third servo driver is connected to the input end of the second motor 14; the One end of the third encoder is connected to the second motor 14, and the other end of the third encoder is connected to the third servo driver. The output end of the fourth servo driver is connected to the input end of the rotary motor 21 ; one end of the fourth encoder is connected to the rotary motor 21 , and the other end of the fourth encoder is connected to the fourth servo driver.

The PLC controller can obtain the corresponding rotation angles of the first motor 12, the second motor 14 and the rotating motor 21 through arithmetic operation according to the three-dimensional coordinate value of the input workpiece, and then calculate the corresponding pulse number and pulse frequency according to the motor rotation angle. ; The first servo driver, the second servo driver, the third servo driver and the fourth servo driver receive the pulse signal sent by the PLC controller and control the operation of the first motor 12, the second motor 14 and the rotating motor 21 respectively; the described The encoder collects the rotational angle and rotational speed information of the motor, and transmits the collected information to the servo driver. The servo driver adjusts the rotational speed and rotational angle of the corresponding motor by comparing the initial information and feedback information to ensure that the motor reaches the set rotational speed and rotational angle.

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention. As long as the technical solutions that can be realized on the basis of the above-described embodiments without creative work, all should be regarded as falling into the patent of the present invention. within the scope of protection of rights.

Claims (6)

1. A dual-laser strengthening coating device, characterized in that: comprising a fixed platform (13), a laser platform (2), a first laser head (26), a first laser bracket (25), a second laser head (24) ), the second laser bracket (36), the first branch chain and the second branch chain, the fixed ends of the first branch chain and the second branch chain are connected on the fixed platform (13), the first branch chain and the second branch chain The output end of the branch chain is connected to the laser platform (2); the first branch chain is provided with two, and the second branch chain is provided with one; the first laser bracket (25) and the second laser bracket (36) are both fixed On the laser platform (2), the first laser bracket (25) and the second laser bracket (36) are fixedly connected, and the end faces of the first laser bracket (25) and the second laser bracket (36) abutting each other constitute For installing the vertical mounting holes and the inclined mounting holes of the first laser head (26) and the second laser head (24), the first laser head (26) is mounted on the first laser bracket (25) and the second laser bracket (36) In the vertical installation hole formed, the second laser head (24) is installed in the inclined installation hole formed by the first laser bracket (25) and the second laser bracket (36); The first branch chain includes a first motor (12), a first coupling (29), a first lead screw (30), a first support bearing (9), a first lead screw nut (31), a first lead screw (31), and a first lead screw (31). a fixed bracket (11), a first moving bracket (10) and a first connecting rod (6); the first motor (12) is fixedly connected to the fixed platform (13) by bolts, and the output of the first motor (12) The end is connected to the first lead screw (30) through the first coupling (29); the top of the first fixing bracket (11) is fixedly connected to the fixed platform (13) by bolts; the first lead screw (30) ) is connected to the first coupling (29) at one end, and the other end of the first lead screw (30) is connected to the first support bearing (9), which is embedded in the first fixing bracket (11). ); the upper end of the first moving bracket (10) is fixedly connected with the first lead screw nut (31) through bolts, and the lower end of the first moving bracket (10) is fixed with a connecting frame (8); the connection The frame (8) is connected to the first moving bracket (10) through the first connecting rod (6), and the lower end of the connecting frame (8) is connected to the upper end of the first connecting rod (6) through the moving end connecting piece; the moving end The connecting piece includes a moving end upper connecting piece (32), a moving end middle piece (33) and a moving end lower connecting piece (7); one end of the moving end upper connecting piece (32) is fixed to the lower end of the connecting frame (8) connected, the other end of the upper connecting piece (32) of the mobile end is hinged with the middle piece (33) of the moving end; The other end of (7) and the upper end of the first connecting rod (6) are fixedly connected by tightening screws, and the upper connecting piece (32) of the moving end and the lower connecting piece (7) of the moving end are connected with the middle piece (33) of the moving end. The directions of the hinge axes between them are perpendicular to each other; the lower end of the first connecting rod (6) is connected to the laser platform (2) through a platform connecting piece; the platform connecting piece includes a platform upper connecting piece (5), a platform middle piece (4) ) and the platform lower connector (3); one end of the platform upper connector (5) is connected to the lower end of the first connecting rod (6) by tightening screws, and the other end of the platform upper connector (5) is connected to the platform middle piece (4) Hinged; one end of the platform lower connector (3) is hinged with the platform middle piece (4), and the other end of the platform lower connector (3) is fixed on the laser platform (2) by fastening screws and a shaft connection, the hinge axis directions between the platform upper connector (5) and the platform lower connector (3) and the platform middle part (4) are perpendicular to each other; The second branch chain includes a second motor (14), a second coupling (15), a second lead screw (35), a second support bearing (37), a second lead screw nut (17), a second lead screw (35), and a second lead screw (17). A fixed bracket (18), a second moving bracket (19), a rotating motor (21), a third coupling (22) and a second connecting rod (23); the second motor (14) is fixedly connected to the On the fixed platform (13), the output end of the second motor (14) is connected to the second lead screw (35) through the second coupling (15); the top of the second fixing bracket (18) is fixedly connected to the on the fixed platform (13); one end of the second lead screw (35) is connected to the second coupling (15), and the other end of the second lead screw (35) is connected to the second support bearing (37); Two supporting bearings (37) are embedded in the bottom groove of the second fixing bracket (18); the second moving bracket (19) is fixedly connected with the second screw nut (17) by bolts, and the rotating motor bracket ( 20) It is fixedly connected to the second moving bracket (19) by bolts; the rotary motor (21) is fixed on the inner side of the rotary motor bracket (20), and the output end of the rotary motor (21) passes through the third coupling ( 22) Connect the second connecting rod (23); one end of the second connecting rod (23) is connected to the third coupling (22), and the other end of the second connecting rod (23) is connected to the laser platform ( 2); A through hole is provided in the middle of the laser platform (2), both the first laser bracket (25) and the second laser bracket (36) pass through the through hole in the middle of the laser platform (2), and the first laser head (26) ) and the second laser head (24) emit laser light toward the bottom of the laser platform (2) through the through hole on the laser platform (2); The two first branch chains and the one second branch chain are connected to the fixed platform (13) and the laser platform (2), and the upper and lower ends of the two first branch chains and the one second branch chain are connected to the fixed platform (13) The connection points with the laser platform (2) are all distributed in an equilateral triangle. 2. A dual-laser strengthening coating device according to claim 1, characterized in that: the vertical installation hole is perpendicular to the fixed platform (13), and the plane angle between the vertical installation hole and the inclined installation hole is 15 degrees or 165 degrees. 3. A dual-laser strengthening coating device according to claim 1, characterized in that: the second motor (14) is coaxial with the output shaft of the rotary motor (21), and the first motor (12) It is the same type of motor as the second motor (14). 4. A dual-laser strengthening coating device according to claim 1, characterized in that: two first guide rails (27) are provided on both inner sides of the first fixing bracket (11), and are sleeved on the first fixed bracket (11). The first sliding block (28) on a guide rail (27) is fixedly connected to both sides of the first lead screw nut (31) through bolts. 5 . The double-laser strengthening coating device according to claim 1 , wherein two second guide rails ( 16 ) are provided on both sides of the inner side of the second fixing bracket ( 18 ), and are sleeved on the second fixing bracket ( 18 ). 6 . The second sliding blocks (34) on the two guide rails (16) are fixedly connected to both sides of the second lead screw nut (17) by means of bolts. 6 . The double-laser strengthening coating device according to claim 1 , wherein the output ends of the two first motors ( 12 ) are respectively provided with a first encoder and a second encoder, and the second motor ( The output end of 14) is provided with a third encoder, and the output end of the rotary motor (21) is provided with a fourth encoder.

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