Positioning device for femtosecond laser processing of curved-surface workpiece

Abstract

The invention discloses a positioning device for femtosecond laser machining of a curved surface workpiece, and relates to the technical field of femtosecond laser machining, the positioning device comprises a base and a stand column installed on one side of the outer wall of the top of the base, a machine box is installed at the top end of the stand column, and a galvanometer is arranged on the outer wall of the bottom of the machine box; the limiting mechanism comprises two supporting frames arranged at the top of the base, the top ends of the two supporting frames are provided with the same mounting frame, sliding grooves are formed in the inner walls of the two sides of the mounting frame, electric sliding rails are installed on the inner walls of the two sliding grooves, and a workpiece body is arranged on the inner side of the mounting frame. The positioning device for femtosecond laser processing of the curved-surface workpiece has the technical effects of improving the stability in the limiting process and avoiding deformation of the workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of femtosecond laser processing, and in particular to a positioning device for femtosecond laser processing of curved surface workpieces. Background Art

[0002] Femtosecond laser is a laser technology that emits high-energy pulses in a very short time. It has many unique characteristics and a wide range of applications. Femtosecond laser has significant advantages in micro-nano processing, precision manufacturing and other fields. Due to its high energy density and low heat-affected zone, femtosecond laser can achieve micron-level processing accuracy and avoid thermal damage to surrounding materials.

[0003] In the traditional femtosecond laser processing process, the fixed limit structure of the workpiece is simple to set up and has low stability. It is impossible to flexibly adjust the limit according to the specific shape of the curved workpiece. The workpiece is easily deformed during the fixing process, thereby affecting the processing quality of the femtosecond laser.

[0004] For example: in the actual processing process, a femtosecond laser is needed to perform surface treatment on the outer curved surface of a tubular workpiece. The processed lines need to be fully covered on the surface of the workpiece, and the line connection positions need to be kept aligned. Traditional positioning devices mostly fix one end of the workpiece and keep the other end active. The stability of the workpiece rotation adjustment to adapt to the laser processing process is low, and the single-side limit fixed structure is also prone to deformation of the workpiece and has low stability. Summary of the invention

[0005] The present invention discloses a positioning device for femtosecond laser processing of curved workpieces, aiming to solve the technical problems in the traditional femtosecond laser processing process, that is, the fixed limit structure of the workpiece is simple to set, the stability is low, the limit cannot be flexibly adjusted according to the specific shape of the curved workpiece, and the workpiece is easily deformed during the fixing process, thereby affecting the processing quality of the femtosecond laser.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A positioning device for femtosecond laser processing of curved workpieces, comprising a base and a column installed on one side of the top outer wall of the base, a chassis is installed on the top of the column, and a galvanometer is provided on the bottom outer wall of the chassis, and also includes: a limiting mechanism: the limiting mechanism comprises two support frames arranged on the top of the base, the same mounting frame is installed on the top of the two support frames, slide grooves are provided on the inner walls of both sides of the mounting frame, electric slide rails are installed on the inner walls of the two slide grooves, and a workpiece body is provided on the inner side of the mounting frame; an elastic mounting mechanism: the elastic mounting mechanism comprises sliding holes arranged on both sides of the mounting frame, sliding rods are slidably connected to the inner walls of the two sliding holes, rotating rods are connected to the inner walls of the two sliding rods through bearings, a movable rod is inserted on the inner wall of the rotating rod, and one end of the movable rod is provided with There is a stop pad, a return spring is sleeved on the outer wall of the movable rod, one end of the return spring is connected to the outer wall of one side of the stop pad, and the other end of the return spring is connected to one end of the rotating rod, and the rotating rod and the movable rod are respectively connected to the first fixed sleeve and the second fixed sleeve at one end away from the return spring, and the first fixed sleeve and the second fixed sleeve are both connected with folding rods distributed at equal distances, and a support pad is installed at the connection between the two folding rods, and side sliders are provided on the outer walls of both sides of the sliding rod, and the two side sliders are respectively slidably connected to the electric slide rails on the inner side of the mounting frame; synchronous rotation mechanism: the synchronous rotation mechanism is arranged on one of the sliding rods; cleaning mechanism: the cleaning mechanism is arranged above the mounting frame; guiding mechanism: the guiding mechanism is used in conjunction with the cleaning mechanism.

[0007] In the present scheme, the elastic mounting mechanism set up can utilize the return spring to squeeze the movable rod to move, thereby pushing the second fixed sleeve connected to one end of the movable rod to approach the first fixed sleeve, and as the two get closer, the folding rod connected thereto will bend and bulge, and finally drive the support pad at the connection to limit and fix the workpiece body on the inner side of the mounting frame. Firstly, the simultaneous fixing of both ends avoids the problem of unstable limiting and stability. Secondly, the multi-point support of the folding rod, the support pad and the elastic support of the return spring can make the force act on the workpiece body more evenly and with a buffering effect, thereby avoiding deformation and damage of the workpiece body while limiting the workpiece body.

[0008] In a preferred embodiment, the synchronous rotation mechanism includes a mounting plate arranged at the bottom of one of the sliding rods, a first motor is provided on the outer wall of one side of the mounting plate, an active roller is connected to one end of the output shaft of the first motor, a driven roller is provided on the outer wall of the rotating rod, the same transmission belt is sleeved on the outer walls of the active roller and the driven roller, and limiting holes are provided on the inner walls of the two sliding rods, a limiting connecting rod is inserted into the inner wall of one of the sliding rods, and the limiting connecting rod is adapted to the limiting hole.

[0009] By setting up a synchronous rotating mechanism, the rotating rods on both sides can be connected. When the first motor drives the active roller to rotate, the driven roller will drive the two rotating rods to start rotating under the drive belt. During the specific processing, the rotation speed will be adjusted according to the surface processing progress of the femtosecond laser to ensure that the galvanometer can continuously and comprehensively perform stable processing operations on curved workpieces.

[0010] In a preferred embodiment, the cleaning mechanism includes a movable support rod connected to one side of the top outer wall of the mounting frame by a hinge, a top frame is installed on the top of the movable support rod, two movable blocks are slidably connected to the inner wall of one side of the top frame, push rods are provided on the outer walls on the opposite sides of the two movable blocks, the two push rods are respectively slidably inserted on the outer walls on both sides of the top frame, telescopic air cylinders are installed on the opposite sides of the two movable blocks, air guide holes are provided at the bottom of the two telescopic air cylinders, the air guide holes are long slit-shaped structures, and the air guide holes located on the two telescopic air cylinders are connected, and an air inlet pipe is provided on the outer wall of one side of the top frame, and the air inlet pipe is connected to the interior of the telescopic air cylinder.

[0011] By adjusting the push rods on both sides, the two movable blocks can be driven to move on the inner wall of the top frame, thereby changing the overall length of the telescopic air cylinder. As the telescopic air cylinder is extended or retracted, the air guide holes connected thereto will tend to become longer or shorter as a whole, thereby effectively adapting to workpiece bodies of different lengths, making it more targeted when using the cleaning structure for surface cleaning.

[0012] In a preferred embodiment, the guiding mechanism includes two movable seats arranged on the outer wall of one side of the movable support rod, and an electric telescopic rod is installed on each of the two movable seats. A guide plate is connected to one side of the outer wall of the bottom of the top frame by a hinge, and a diversion groove distributed at equal distances is provided at the bottom edge of the guide plate. One end of the piston rod of the electric telescopic rod is movably connected to the outer wall of the guide plate on the side away from the diversion groove. A winding drum is provided on the outer wall of one side of the top frame, and a shielding curtain is wound on the inner wall of the winding drum. A second motor is provided on the outer wall of one side of the winding drum, and the second motor is used to drive the shielding curtain to roll up. A collecting bucket is installed on the outer wall of one side of the support frame, and a collecting drawer is plugged into the inner wall of the collecting bucket, and two staggered dust baffles are provided on the inner wall of the collecting drawer.

[0013] Through an external air source, the airflow is guided to the inside of the telescopic air cylinder, and then the size of the air guide hole is adjusted to accurately match the clean airflow with the position of femtosecond laser processing. With the guidance of the guide plate, the debris generated on the surface of the workpiece processed by the femtosecond laser can be blown off. In this process, the shielding curtain will be located on the opposite side of the wind direction guided by the guide plate, and the blown debris will fall into the collection bucket located below the workpiece body under the obstruction of the shielding curtain.

[0014] As can be seen from the above, a positioning device for femtosecond laser processing of curved workpieces comprises a base and a column installed on one side of the top outer wall of the base, a chassis is installed on the top of the column, and a galvanometer is provided on the bottom outer wall of the chassis, and also comprises: a limiting mechanism: the limiting mechanism comprises two support frames arranged on the top of the base, the same mounting frame is installed on the top of the two support frames, slide grooves are provided on the inner walls of both sides of the mounting frame, electric slide rails are installed on the inner walls of the two slide grooves, and a workpiece body is provided on the inner side of the mounting frame; an elastic mounting mechanism: the elastic mounting mechanism comprises sliding holes arranged on both sides of the mounting frame, sliding rods are slidably connected to the inner walls of the two sliding holes, rotating rods are connected to the inner walls of the two sliding rods through bearings, and a movable rod is inserted on the inner wall of the rotating rod. A stop pad is provided at one end, a return spring is sleeved on the outer wall of the movable rod, one end of the return spring is connected to the outer wall of one side of the stop pad, and the other end of the return spring is connected to one end of the rotating rod, and the ends of the rotating rod and the movable rod away from the return spring are respectively connected to a first fixed sleeve and a second fixed sleeve, and the first fixed sleeve and the second fixed sleeve are both connected to folding rods distributed at equal distances, and a support pad is installed at the connection of the two folding rods, and side sliders are provided on the outer walls of both sides of the slide rod, and the two side sliders are respectively slidably connected to the electric slide rails on the inner side of the mounting frame; synchronous rotation mechanism: the synchronous rotation mechanism is arranged on one of the slide rods; cleaning mechanism: the cleaning mechanism is arranged above the mounting frame; guiding mechanism: the guiding mechanism is used in conjunction with the cleaning mechanism. The positioning device for femtosecond laser processing of curved workpieces provided by the present invention has the technical effect of improving the stability of the limiting process and avoiding deformation of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a positioning device for femtosecond laser processing of curved workpieces proposed by the present invention.

[0016] Figure 2 A side view of a positioning device for femtosecond laser processing of curved workpieces proposed by the present invention.

[0017] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0018] Figure 4 This is a schematic diagram of the mounting frame structure of a positioning device for femtosecond laser processing of curved workpieces proposed by the present invention.

[0019] Figure 5 The present invention is a schematic diagram of a top frame installation structure of a positioning device for femtosecond laser processing of curved workpieces proposed by the present invention.

[0020] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at point B in the middle.

[0021] Figure 7 This is a schematic diagram of the slide bar installation structure of a positioning device for femtosecond laser processing of curved workpieces proposed by the present invention.

[0022] Figure 8 This is a diagram of the installation structure of a side slider of a positioning device for femtosecond laser processing of curved workpieces proposed by the present invention.

[0023] Fig. 9 For the present invention Figure 8 Schematic diagram of the enlarged structure at point C in the middle.

[0024] Fig.10 For the present invention Figure 8 Schematic diagram of the enlarged structure at D in the middle.

[0025] Fig.11 This is a schematic diagram of the structure of a shielding curtain of a positioning device for femtosecond laser processing of curved workpieces proposed by the present invention.

[0026] Fig.12 This is a structural diagram of a collecting bucket of a positioning device for femtosecond laser processing of curved workpieces proposed by the present invention.

[0027] In the figure: 1. base; 2. support frame; 3. mounting frame; 4. movable support rod; 5. top frame; 6. column; 7. chassis; 8. galvanometer; 9. collecting bucket; 10. guide plate; 11. electric telescopic rod; 12. winding drum; 13. shielding curtain; 14. air inlet pipe; 15. movable block; 16. slide bar; 17. workpiece body; 18. telescopic air cylinder; 19. air guide hole; 20. slide groove; 21. limit connecting rod; 22. side slide block; 23. movable rod; 24. reset spring; 25. transmission belt; 26. rotating rod; 27. mounting plate; 28. first motor; 29. ​​folding rod; 30. support pad; 31. push rod; 32. second motor; 33. dust shield; 34. collecting drawer. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] The present invention discloses a positioning device for femtosecond laser processing of curved workpieces, which is mainly used in traditional femtosecond laser processing processes. The fixed limit structure of the workpiece is simply set up, has low stability, and cannot be flexibly adjusted according to the specific shape of the curved workpiece. The workpiece is easily deformed during the fixing process, thereby affecting the processing quality of the femtosecond laser.

[0030] Reference Figures 1 to 12 A positioning device for femtosecond laser processing of curved workpieces, comprising a base 1 and a column 6 installed on one side of the top outer wall of the base 1, a chassis 7 is installed on the top of the column 6, and a galvanometer 8 is provided on the bottom outer wall of the chassis 7, and also includes: a limiting mechanism: the limiting mechanism includes two support frames 2 arranged on the top of the base 1, the tops of the two support frames 2 are installed with the same mounting frame 3, the inner walls of both sides of the mounting frame 3 are provided with slide grooves 20, the inner walls of the two slide grooves 20 are installed with electric slide rails, and the inner side of the mounting frame 3 is provided with a workpiece body 17; an elastic mounting mechanism: the elastic mounting mechanism includes sliding holes arranged on both sides of the mounting frame 3, the inner walls of the two sliding holes are slidably connected with sliding rods 16, the inner walls of the two sliding rods 16 are connected with rotating rods 26 through bearings, and the inner walls of the rotating rods 26 are plugged with movable rods 23. A stop pad is provided at one end of the rod 23, and a return spring 24 is sleeved on the outer wall of the movable rod 23, one end of the return spring 24 is connected to the outer wall of one side of the stop pad, and the other end of the return spring 24 is connected to one end of the rotating rod 26, and the rotating rod 26 and the end of the movable rod 23 away from the return spring 24 are respectively connected with a first fixed sleeve and a second fixed sleeve, and the first fixed sleeve and the second fixed sleeve are both connected with folding rods 29 distributed at equal distances, and a support pad 30 is installed at the connection between the two folding rods 29, and side sliders 22 are provided on the outer walls of both sides of the sliding rod 16, and the two side sliders 22 are respectively slidably connected to the electric slide rails on the inner side of the mounting frame 3; synchronous rotation mechanism: the synchronous rotation mechanism is arranged on one of the sliding rods 16; cleaning mechanism: the cleaning mechanism is arranged above the mounting frame 3; guiding mechanism: the guiding mechanism is used in conjunction with the cleaning mechanism.

[0031] In the present scheme, the elastic mounting mechanism is set up so that the reset spring 24 can be used to squeeze the movable rod 23 to move, thereby pushing the second fixed sleeve connected to one end of the movable rod 23 toward the first fixed sleeve. As the two get closer, the folding rod 29 connected thereto will bend and bulge, and finally drive the support pad 30 at the connection point to limit and fix the workpiece body 17 on the inner side of the mounting frame 3. Firstly, the simultaneous fixing of both ends can avoid the problem of unstable limiting. Secondly, the multi-point support of the folding rod 29, the support pad 30 and the elastic support of the reset spring 24 can make the force act on the workpiece body 17 more evenly and with a buffering effect, thereby avoiding deformation and damage of the workpiece body 17 while limiting the workpiece body 17.

[0032] In addition, the side sliders 22 arranged on both sides of the slide rod 16 are slidably connected to the electric slide rail on the inner side of the mounting frame 3, which can drive the fixed workpiece body 17 to move finely on the inner side of the mounting frame 3, so that the longer workpiece body 17 can be located within the effective range of the galvanometer 8 when being processed by the galvanometer 8, thereby facilitating the continuity of the processing process.

[0033] It should be noted that the mounting bracket 3 is disposed directly below the galvanometer 8. After the workpiece body 17 is mounted inside the mounting bracket 3, the galvanometer 8 can also process the workpiece in a vertical curved manner, thereby maintaining the stability of the laser processing.

[0034] Among them, a limiting side block is provided at the plugging position of the movable rod 23 and the rotating rod 26. When the rotating rod 26 rotates, the limiting side block can bind the plugged movable rod 23 and the rotating rod 26, thereby stably driving the installed workpiece body 17 to rotate stably and at a low speed.

[0035] Among them, the support pad 30 is made of rubber material. During the elastic support process, the support pad 30 made of rubber material can better protect the support position and avoid deformation.

[0036] Reference Figure 7 , Figure 8 and Fig. 9 In a preferred embodiment, the synchronous rotation mechanism includes a mounting plate 27 arranged at the bottom of one of the slide bars 16, a first motor 28 is provided on the outer wall of one side of the mounting plate 27, an active roller is connected to one end of the output shaft of the first motor 28, a driven roller is provided on the outer wall of the rotating rod 26, the outer walls of the active roller and the driven roller are sleeved with the same transmission belt 25, and limiting holes are provided on the inner walls of the two slide bars 16, a limiting connecting rod 21 is inserted into the inner wall of one of the slide bars 16, and the limiting connecting rod 21 is adapted to the limiting hole.

[0037] Specifically, the rotating rods 26 on both sides can be connected by setting up a synchronous rotation mechanism. When the first motor 28 drives the active roller to rotate, the driven roller will drive the two rotating rods 26 to start rotating under the drive of the transmission belt 25. During the specific processing, the rotation speed will be adjusted according to the surface processing progress of the femtosecond laser to ensure that the galvanometer 8 can continuously and comprehensively perform stable processing operations on the curved workpiece.

[0038] Reference Figure 3 , Figure 5 , Figure 6 and Fig.11In a preferred embodiment, the cleaning mechanism includes a movable support rod 4 connected to one side of the top outer wall of the mounting frame 3 by a hinge, a top frame 5 is installed on the top of the movable support rod 4, and two movable blocks 15 are slidably connected to the inner wall of one side of the top frame 5. Push rods 31 are provided on the outer walls on the opposite sides of the two movable blocks 15. The two push rods 31 are respectively slidably inserted into the outer walls on both sides of the top frame 5, and telescopic air cylinders 18 are installed on the opposite sides of the two movable blocks 15. Air guide holes 19 are provided at the bottom of the two telescopic air cylinders 18. The air guide holes 19 are long slit-shaped structures, and the air guide holes 19 located on the two telescopic air cylinders 18 are connected. An air inlet pipe 14 is provided on the outer wall of one side of the top frame 5, and the air inlet pipe 14 is connected to the interior of the telescopic air cylinder 18.

[0039] Specifically, by adjusting the push rods 31 on both sides, the two movable blocks 15 can be driven to move on the inner wall of the top frame 5, thereby changing the overall length of the telescopic air cylinder 18. As the telescopic air cylinder 18 is extended and retracted, the air guide holes 19 connected thereto will tend to become longer or shorter as a whole, thereby effectively adapting to workpiece bodies 17 of different lengths, making it more targeted when using the cleaning structure for surface cleaning.

[0040] Reference Figure 2 , Figure 3 , Figure 4 , Figure 6 , Fig.11 and Fig.12 In a preferred embodiment, the guiding mechanism includes two movable seats arranged on the outer wall of one side of the movable support rod 4, and an electric telescopic rod 11 is installed on both movable seats. A guide plate 10 is connected to one side of the outer wall of the bottom of the top frame 5 by a hinge, and a diversion groove distributed at equal distances is provided at the bottom edge of the guide plate 10. One end of the piston rod of the electric telescopic rod 11 is movably connected to the outer wall of the guide plate 10 away from the diversion groove. A winding drum 12 is provided on the outer wall of one side of the top frame 5, and a shielding curtain 13 is wound on the inner wall of the winding drum 12. A second motor 32 is provided on the outer wall of one side of the winding drum 12, and the second motor 32 is used to drive the shielding curtain 13 to roll up and unroll. A collecting bucket 9 is installed on the outer wall of one side of the support frame 2, and a collecting drawer 34 is plugged into the inner wall of the collecting bucket 9, and two staggered ash baffles 33 are provided on the inner wall of the collecting drawer 34.

[0041] Specifically, the airflow is guided to the inside of the telescopic air cylinder 18 through an external air source, and then the size of the air guide hole 19 is adjusted to accurately match the clean airflow with the position of the femtosecond laser processing. With the guidance of the guide plate 10, the debris generated on the surface of the workpiece body 17 processed by the femtosecond laser can be blown off. During this process, the shielding curtain 13 will be located on the opposite side of the wind direction guided by the guide plate 10, and the blown-off debris will also fall into the collecting bucket 9 located below the workpiece body 17 and be collected under the obstruction of the shielding curtain 13.

[0042] It should be noted that when the workpiece body 17 rotates, its processed upper surface moves toward the air blowing direction of the air guide hole 19, so that the debris on the just processed part can be effectively blown away by the air, avoiding the debris from affecting the subsequent processing process. In addition, the dust baffles 33 are arranged in a staggered downward manner, and the fallen debris will not be simply lifted up after being collected.

[0043] Working principle: When in use, first adjust the slide bars 16 on both sides according to the workpiece body 17 to be processed, move the support pad 30 connected to the rotating rod 26 to a suitable position, and then put the workpiece body 17 to the outside of the support pad 30 position, and use the elastic support of the reset spring 24 to prop up the support pad 30, so as to achieve the fixation of the workpiece body 17. After the fixation is completed, the galvanometer 8 located on the chassis 7 will perform surface processing on the curved surface of the workpiece body 17. In this process, the side sliders 22 arranged on both sides of the slide bar 16 are slidably connected to the electric slide rails on the inner side of the mounting frame 3, which can drive the fixed workpiece body 17 to move finely on the inner side of the mounting frame 3, so that the longer workpiece body 17 can be located within the effective range of the galvanometer 8 when being processed by the galvanometer 8. As the processing process proceeds, the processing debris generated on the surface will be guided by air blowing. Since the surface processing process is stable, the rotation speed of the workpiece body 17 is slow, so that the air-blown debris can be prevented from accumulating on the surface of the workpiece body 17 to cause subsequent processing interference, thereby ensuring the stable progress of femtosecond laser processing.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A positioning device for femtosecond laser processing of curved workpieces, comprising a base (1) and a column (6) mounted on one side of the top outer wall of the base (1), a box (7) being mounted on the top of the column (6), and a galvanometer (8) being disposed on the bottom outer wall of the box (7), characterized in that: Also includes: Limiting mechanism: the limiting mechanism comprises two support frames (2) arranged on the top of the base (1), the top of the two support frames (2) is equipped with a same mounting frame (3), the inner walls of both sides of the mounting frame (3) are provided with sliding grooves (20), the inner walls of the two sliding grooves (20) are equipped with electric slide rails, and the inner side of the mounting frame (3) is provided with a workpiece body (17); Elastic mounting mechanism: The elastic mounting mechanism comprises sliding holes arranged on both sides of the mounting frame (3), the inner walls of the two sliding holes are slidably connected with sliding rods (16), the inner walls of the two sliding rods (16) are connected with rotating rods (26) via bearings, the inner walls of the rotating rods (26) are plugged with movable rods (23), one end of the movable rod (23) is provided with a stop pad, the outer wall of the movable rod (23) is sleeved with a return spring (24), one end of the return spring (24) is connected to the outer wall of one side of the stop pad, and the return spring (24) The other end of the sliding rod (16) is connected to one end of the rotating rod (26), the rotating rod (26) and the end of the movable rod (23) away from the return spring (24) are respectively connected to a first fixing sleeve and a second fixing sleeve, the first fixing sleeve and the second fixing sleeve are both connected to folding rods (29) distributed at equal distances, and a support pad (30) is installed at the connection between the two folding rods (29), and side sliders (22) are respectively provided on the outer walls of both sides of the sliding rod (16), and the two side sliders (22) are respectively slidably connected to the electric slide rails on the inner side of the mounting frame (3); Synchronous rotation mechanism: the synchronous rotation mechanism is arranged on one of the sliding rods (16); Cleaning mechanism: the cleaning mechanism is arranged above the mounting frame (3); Guiding mechanism: The guiding mechanism is used in conjunction with the cleaning mechanism.

2. A positioning device for femtosecond laser processing of curved workpieces according to claim 1, characterized in that: A limiting side block is provided at the insertion position of the movable rod (23) and the rotating rod (26).

3. The positioning device for femtosecond laser processing of curved workpieces according to claim 1, characterized in that: The support pad (30) is made of rubber.

4. The positioning device for femtosecond laser processing of curved workpieces according to claim 1, characterized in that: The synchronous rotation mechanism comprises a mounting plate (27) arranged at the bottom of one of the sliding rods (16), a first motor (28) is arranged on an outer wall of one side of the mounting plate (27), an active roller is connected to one end of an output shaft of the first motor (28), a driven roller is arranged on the outer wall of the rotating rod (26), and a same transmission belt (25) is sleeved on the outer walls of the active roller and the driven roller.

5. The positioning device for femtosecond laser processing of curved workpieces according to claim 4, characterized in that: The inner walls of the two sliding rods (16) are each provided with a limiting hole, and a limiting connecting rod (21) is inserted into the inner wall of one of the sliding rods (16), and the limiting connecting rod (21) is adapted to the limiting hole.

6. A positioning device for femtosecond laser processing of curved workpieces according to claim 5, characterized in that: The cleaning mechanism comprises a movable support rod (4) connected to one side of the top outer wall of the mounting frame (3) via a hinge, a top frame (5) being installed at the top of the movable support rod (4), two movable blocks (15) being slidably connected to the inner wall of one side of the top frame (5), push rods (31) being provided on the outer walls on the opposite sides of the two movable blocks (15), the two push rods (31) being slidably inserted on the outer walls on both sides of the top frame (5), and telescopic air cylinders (18) being installed on the opposite sides of the two movable blocks (15), and air guide holes (19) being provided at the bottoms of the two telescopic air cylinders (18).

7. A positioning device for femtosecond laser processing of curved workpieces according to claim 6, characterized in that: The air guide holes (19) are of a long slit-like structure, and the air guide holes (19) located on the two telescopic air cylinders (18) are connected. An air intake pipe (14) is provided on an outer wall of one side of the top frame (5), and the air intake pipe (14) is connected to the interior of the telescopic air cylinder (18).

8. The positioning device for femtosecond laser processing of curved workpieces according to claim 6, characterized in that: The guide mechanism comprises two movable seats arranged on the outer wall of one side of the movable support rod (4), and the two movable seats are both mounted with an electric telescopic rod (11). One side of the bottom outer wall of the top frame (5) is connected to a guide plate (10) via a hinge, and the bottom edge of the guide plate (10) is provided with equidistantly distributed diverter grooves, and one end of the piston rod of the electric telescopic rod (11) is movably connected to the outer wall of the guide plate (10) on the side away from the diverter groove.

9. A positioning device for femtosecond laser processing of curved workpieces according to claim 8, characterized in that: A winding drum (12) is provided on an outer wall of one side of the top frame (5), a blackout curtain (13) is wound on the inner wall of the winding drum (12), and a second motor (32) is provided on an outer wall of one side of the winding drum (12), the second motor (32) being used to drive the blackout curtain (13) to be rolled up and unwound.

10. The positioning device for femtosecond laser processing of curved workpieces according to claim 1, characterized in that: A collecting bucket (9) is mounted on an outer wall of one side of the support frame (2), a collecting drawer (34) is plugged into an inner wall of the collecting bucket (9), and two staggered ash baffles (33) are arranged on the inner wall of the collecting drawer (34).

Images