A laser processing system and process for cooling gas film holes

Abstract

This application relates to a laser processing system and process for cooling film holes, belonging to the field of laser drilling technology. The laser processing system for cooling film holes includes a frame and a laser dotting machine mounted on the frame. A moving component is provided between the laser dotting machine and the frame. A placement component is provided below the laser dotting machine on the frame, and a fixing component is provided between the placement component and the laser dotting machine. The placement component includes a placement box, a placement plate, and multiple placement columns. The placement plate is located at the opening of the placement box, and multiple vertical placement holes are provided on the placement plate. Each placement hole contains a coaxially arranged electromagnet ring. The placement columns are placed inside the electromagnet rings and can slide up and down along the electromagnet rings. The top of each placement column is used to place a blade, and multiple electromagnetic blocks are embedded in the placement column. An elastic mechanism is provided at the bottom of the placement column to support it. The fixing component is used to hold the blade above the placement column. This application has the effect of improving the stability of the blade during drilling.

Description

Technical Field

[0001] This application relates to the field of laser drilling technology, and in particular to a laser processing system and process for cooling film holes. Background Technology

[0002] Turbine blades have numerous film cooling holes with complex spatial angles. Film cooling efficiency is a response of material, geometric, and other parameters and their coupling effects under high-temperature, high-pressure, three-dimensional unsteady flow fields, and is closely related to the shape and position parameters of the film cooling holes. Therefore, ensuring the shape and position accuracy of the blade film cooling holes is crucial for improving cooling efficiency and engine performance.

[0003] Currently, when using laser drilling machines to process film-forming holes on blades, the positioning of the blades largely relies on manual correction by experienced engineers. The two ends of the blade are manually clamped using fixtures, typically clamping cylinders or jaws, to fix the blade on the laser processing platform. The laser beam is then focused, and the angle at which the laser beam irradiates the workpiece is determined so that this angle coincides with the designed central axis of the film-forming hole. After manually adjusting the clamping angle and clamping force of the blade, the laser drilling machine is adjusted to drill the hole in the blade. This method is time-consuming and labor-intensive, and the blade clamping angle is prone to change during the drilling process. The blade has low stability after clamping, resulting in large drilling errors and low yield.

[0004] The aforementioned technologies have the following drawbacks: the existing blade clamping methods result in poor stability of the blades during clamping and laser drilling for film filtration, which may lead to a reduction in the accuracy, shape, and wall quality of the film filtration holes. Summary of the Invention

[0005] To improve the stability of blades during drilling, this application provides a laser processing system and process for cooling film holes.

[0006] Firstly, this application provides a laser processing system for cooling film holes, which adopts the following technical solution:

[0007] A laser processing system for cooling film holes includes a frame and a laser dotting machine mounted on the frame. A moving component is provided between the laser dotting machine and the frame, which drives the laser dotting machine to move horizontally and vertically along the same horizontal plane of the frame. A placement component is provided below the laser dotting machine on the frame, and a fixing component is provided between the placement component and the laser dotting machine. The placement component includes a placement box, a placement plate, and multiple placement columns. The placement box has an upward-facing opening, and the placement plate is located at the opening of the placement box. Multiple placement holes are vertically opened on the placement plate, and each placement hole contains an electromagnet ring coaxially. The placement columns are located within the electromagnet rings and can slide up and down along the electromagnet rings. The top of the placement column is used to place a blade, and more than five electromagnetic blocks are embedded in the placement column. The surfaces of the electromagnetic blocks are flush with the peripheral sidewalls of the placement column, and the electromagnet rings are used to attract the electromagnetic blocks. An elastic mechanism is provided at the bottom of the placement column to support the placement column. The fixing component is connected to the frame and is used to press against the blade above the placement column.

[0008] By adopting the above technical solution, when drilling holes in the blade, the blade is placed on multiple placement posts, and the blade is gently pressed so that the multiple placement posts form a placement shape that is the same as the blade outline. The electromagnet ring is activated, and the battery iron ring attracts the electromagnetic block located inside the electromagnet ring, thereby fixing the multiple placement posts. Then, the top of the blade is pressed against the fixing component, and after the blade is fixed on the placement component, the blade is laser-drilled using a laser dotting machine, which improves the stability of the blade during drilling.

[0009] Optionally, multiple electromagnetic blocks are evenly distributed along the peripheral sidewall of the placement column.

[0010] By adopting the above technical solution, multiple electromagnetic blocks facilitate the positioning of the placement column by the electromagnetic ring.

[0011] Optionally, the placement plate and the placement box are detachably connected.

[0012] By adopting the above technical solution, when a smaller diameter placement column is needed to support the blade, the placement plate and the placement box can be detachably connected, making it easy to replace the placement plate with one that can accommodate a smaller diameter placement column.

[0013] Optionally, the elastic mechanism includes a telescopic rod and an elastic element. One end of the telescopic rod is connected to the placement column, and the other end is connected to the placement box. The elastic element is sleeved around the placement column, and both ends of the elastic element are also connected to the placement column and the placement box, respectively.

[0014] When the blade is pressed using the above technical solution, the telescopic rod and elastic element descend along the surface contour of the blade, making it easier for the tops of multiple placement columns to be pressed to form the same contour as the blade, thus facilitating the placement of the blade.

[0015] Optionally, a positioning plate is provided between the end of the telescopic rod near the placement box and the placement box. The positioning plate has positioning holes adapted to multiple telescopic rods and elastic elements. The telescopic rods and elastic elements are all inserted into the positioning holes. The positioning plate is detachably connected to the placement box.

[0016] By adopting the above technical solution, when replacing the placement plate with placement holes of different diameters, the positioning plate can be replaced at the same time, thereby facilitating the fixing of placement columns of different diameters.

[0017] Optionally, the placement box is slidably connected to the frame and the sliding direction is lifting and sliding. The bottom of the placement box is provided with a first lifting component, which is used to push the placement box to lift and lower.

[0018] By adopting the above technical solution, the first lifting component is activated, which can adjust the distance between the placement box and the laser dotting machine, making it easier to place blades of different sizes into the upper part of the placement component.

[0019] Optionally, the fixing component includes a moving mechanism, a clamping member, and a clamping block. The moving mechanism is connected to the frame and located above the placement column. The clamping member is connected to the moving mechanism. The clamping block is connected to the end of the clamping member away from the moving mechanism. The moving mechanism is used to drive the clamping member to move laterally and longitudinally above the placement column. The clamping member is used to move the clamping block closer to or away from the placement column.

[0020] By adopting the above technical solution, the moving mechanism moves the clamping member laterally and longitudinally until the clamping member and the clamping block are moved to the position where the blade needs to be fixed. The clamping member is activated, and the clamping member drives the clamping block to abut against the upper surface of the blade to fix the blade.

[0021] Optionally, the top surface of the placement column is spherical.

[0022] By adopting the above technical solution and making the top of the placement column spherical, the possibility of the placement column scratching the blade can be reduced.

[0023] On the other hand, this application also provides a processing method applicable to a laser processing system for a cooling film hole as described above.

[0024] A laser processing technology for cooling film holes, the processing method of which is as follows:

[0025] S1. Place the blade on top of the placement column and press it lightly so that the placement column moves up and down with the blade outline. Multiple placement columns form a placement outline that fits the blade surface.

[0026] S2. Activate the electromagnet ring. The electromagnet ring and the electromagnet block attract each other and fix the placement column respectively. After fixing, release the pressure on the blade.

[0027] S3. Use a fixing component to hold the blades in place;

[0028] S4. The moving component drives the laser dotting machine to perform laser drilling on the blade.

[0029] By adopting the above technical solution, pressing the blade causes multiple placement columns to form a placement contour that fits the blade surface under the support of the elastic mechanism. The placement columns are then fixed by an electromagnet ring and an electromagnet, allowing the placement contour formed by the placement columns to place the blade. After the fixing component further tightens and fixes the blade, a laser dotting machine is used to laser-drill holes in the blade, thereby improving the stability of the blade during laser drilling.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] By setting up placement and fixing components, multiple placement columns and elastic mechanisms adapted to the placement columns, the multiple placement columns can slide up and down on the placement plate. As the operator slightly presses the blade, a placement contour can be formed on the multiple placement columns. At this time, an electromagnet ring is used to attract the electromagnet block, thereby fixing the placement columns and placing the blade within the placement contour. The multiple placement columns increase the support force on the blade, improving the stability of the blade on the placement component. Furthermore, the fixing component is used to clamp the blade a second time, further improving the stability of the blade after clamping, thereby improving the stability of the blade during drilling. By setting the placement plate to a detachable connection method, it is easy to replace the placement plate. When replacing the placement plate, different diameter placement columns are selected according to the shape and material of the blade to be placed. The smaller the diameter of the placement column, the more support points are formed in the placement contour, and the higher the stability of the support provided to the blade. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a laser processing system for cooling film holes according to an embodiment of this application.

[0033] Figure 2 This is a partial structural schematic diagram of a laser processing system for cooling film holes according to an embodiment of this application.

[0034] Figure 3 This is a schematic diagram of the hidden placement box side wall of a laser processing system for cooling film holes according to an embodiment of this application.

[0035] Figure 4 This is a structural schematic diagram of another view of the hidden placement box side wall of a laser processing system for cooling film holes according to an embodiment of this application.

[0036] Figure 5This is a front view of a side wall of a hidden placement box of a laser processing system for cooling film holes according to an embodiment of this application.

[0037] Reference numerals: 1. Frame; 11. Laser dotting machine; 2. Moving component; 21. Crossbar; 211. Through slot; 22. Fixing block; 23. Drive unit; 24. Pneumatic component; 3. Placement component; 31. Placement box; 32. First lifting component; 33. Placement plate; 331. Placement hole; 332. Electromagnetic ring; 34. Placement column; 341. Electromagnetic block; 4. Fixing component; 41. Moving mechanism; 411. First moving drive; 412. Second moving drive; 4121. Connecting rod; 42. Clamping component; 43. Clamping block; 5. Elastic mechanism; 51. Telescopic rod; 52. Elastic component; 53. Positioning plate; 531. Positioning hole. Detailed Implementation

[0038] The following will refer to the appendices in the embodiments of the present invention. Figure 1-5 The technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0039] This application discloses a laser processing system for cooling film holes.

[0040] Reference Figure 1 , Figure 2 A laser processing system for cooling film holes includes a frame 1 and a laser dotting machine 11 mounted on the frame 1. A moving component 2 is provided between the laser dotting machine 11 and the frame 1. The moving component 2 is used to drive the laser dotting machine 11 to move horizontally and vertically along the same horizontal plane of the frame 1. A placement component 3 is provided below the laser dotting machine 11 on the frame 1. The placement component 3 is used to place blades. A fixing component 4 is provided between the placement component 3 and the laser dotting machine 11. The fixing component 4 is used to press against the upper surface of the blades.

[0041] Reference Figure 1 , Figure 2 The laser dotting machine 11 includes a control unit and a laser drilling unit. The control unit is a PLC controller, which is used to control the drilling position and travel path of the laser drilling unit. The laser drilling unit is a laser drilling head equipped with a robotic arm.

[0042] Reference Figure 1 , Figure 2The moving component 2 includes a crossbar 21 and a pneumatic component 24. The crossbar 21 spans the top of the frame 1 and can slide along the long side of the frame 1. The laser drilling unit is slidably connected to the crossbar 21. The top of the frame 1 is provided with a drive unit 23, which is used to drive the crossbar 21 to slide along the long side of the frame 1. The drive unit 23 is a screw drive structure. A through groove 211 is provided on the crossbar 21. A fixing block 22 is provided in the through groove 211. The top end of the fixing block 22 passes through the upper surface of the crossbar 21, and the bottom end protrudes from the lower surface of the crossbar 21. The laser drilling unit is fixedly connected to the bottom surface of the fixing block 22 by bolts. The output end of the pneumatic component 24 passes downward through the fixing block 22. The pneumatic component 24 is a cylinder. The pneumatic component 24 can drive the laser drilling unit to move up and down. One end of the fixing block 22 that protrudes from the upper surface of the crossbar 21 is also installed above the crossbar 21 through a screw drive structure.

[0043] Reference Figure 2 , Figure 3 The fixing component 4 is connected to the frame 1 and is used to abut the blade above the placement column 34. The fixing component 4 includes a moving mechanism 41, abutting member 42, and abutting block 43. The moving mechanism 41 is connected to the top of the frame 1 and is located above the placement column 34. The moving mechanism 41 includes two first moving drives 411 and two second moving drives 412. The two first moving drives 411 are symmetrically arranged and connected to the frame 1. The two second moving drives 412 are also symmetrically arranged and connected to the first moving drives 411. The two first moving drives 411 and the two second moving drives 412 are arranged in a rectangular frame on the frame 1.

[0044] Reference Figure 2 , Figure 3 The first moving drive 411 includes two linear motors symmetrically arranged on the same side of the frame 1. The two linear motors are connected end to end in a "I" shape and are fixed to the frame 1 by bolts. The second moving drive 412 includes a connecting rod 4121 and push drives symmetrically arranged at both ends of the connecting rod 4121. In this embodiment, there are two connecting rods 4121 to facilitate the positioning of the two ends of the blade. The placement direction of the connecting rod 4121 is the same as the placement direction of the crossbar 21, both spanning the width of the frame 1. That is, the two connecting rods 4121 are located on the left and right sides of the frame 1, respectively. One end of the connecting rod 4121 is connected to a linear motor, and the other end is connected to another linear motor on the opposite side. The linear motor is used to drive the connecting rod 4121 to move along the long side of the frame 1.

[0045] Reference Figure 3Two abutment members 42 are provided at the bottom of the connecting rod 4121. Both abutment members 42 are slidably connected to the bottom surface of the connecting rod 4121 through a slider and groove connection. At the same time, the push drives at both ends of the connecting rod 4121 are horizontally penetrated through the end face of the connecting rod 4121 and fixedly connected to the abutment members 42. One push drive is connected to one abutment member 42 on the same connecting rod 4121. The push drive is a cylinder. The push drive is used to push the abutment member 42 to slide along the long side of the connecting rod 4121. The push drive is not shown in the figure. The output end of the abutment member 42 faces the placement component 3. The abutment block 43 is bonded to the output end of the abutment member 42. The abutment block 43 is a rubber block. An abutment block 43 is bonded to the bottom of each abutment member 42.

[0046] The first moving drive 411 is activated, which drives the two connecting rods 4121 to move laterally above the placement component 3. This pushes the drive to move the clamping member 42 longitudinally above the placement component 3. After the clamping member 42 is moved to the four points of the blade, the drive of the clamping member 42 drives the clamping block 43 to approach the placement column 34 until the clamping block 43 abuts against the top of the blade, thus completing the multi-point positioning of the blade and improving the stability of the blade on the placement component 3, thereby improving the stability of the blade during drilling.

[0047] Reference Figure 4 , Figure 5 The placement component 3 includes a placement box 31, a placement plate 33, and multiple placement columns 34. The placement box 31 has an upward opening. The placement box 31 is slidably connected to the frame 1 via a slider and groove connection, and the sliding direction is lifting and lowering. The bottom of the placement box 31 is provided with a first lifting component 32, which is used to push the placement box 31 to lift and lower. The first lifting component 32 includes four cylinders, which are respectively fixedly connected to the bottom surface of the placement box 31 by bolts.

[0048] Reference Figure 4 , Figure 5A placement plate 33 is located at the opening of the placement box 31. The placement plate 33 and the placement box 31 are detachably connected, which can be achieved by bolt fixing. In this embodiment, the placement plate 33 and the placement box 31 are laterally slidably connected by a slider groove. Multiple placement holes 331 are vertically formed on the placement plate 33. Electromagnetic rings 332 are coaxially bonded to each placement hole 331. A placement post 34 is located within the electromagnetic rings 332 and can slide up and down along the electromagnetic rings 332. The top of the placement post 34 is used to place blades. The top surface of the placement post 34 is spherical, which reduces the risk of scratching or damaging the blades. Multiple electromagnetic blocks 341 are embedded in the placement post 34. The electromagnetic blocks 341 are evenly distributed along the peripheral wall of the placement post 34, and their surfaces are flush with the peripheral wall. The electromagnetic rings 332 are used to attract the electromagnetic blocks 341. An elastic mechanism 5 is provided at the bottom of the placement post 34 to support it.

[0049] Furthermore, referring to Figure 4 , Figure 5 The elastic mechanism 5 includes a telescopic rod 51 and an elastic element 52. One end of the telescopic rod 51 is welded to the bottom surface of the placement column 34, and the other end is provided with a positioning plate 53 between it and the placement box 31. The elastic element 52 is sleeved around the placement column 34, and one end of the elastic element 52 is also welded to the bottom surface of the placement column 34. The positioning plate 53 has positioning holes 531 that are adapted to multiple telescopic rods 51 and elastic elements 52. The telescopic rods 51 and elastic elements 52 are all inserted into the positioning holes 531. The positioning plate is detachably connected to the placement box 31.

[0050] When the blade surface is complex, it is necessary to replace the placement plate 33, positioning plate 53 and placement post 34 with a smaller diameter placement hole 331. The smaller diameter placement post 34 can provide multiple support points to facilitate multi-point support of the blade and further improve the stability of the blade placed on the top of the placement post 34.

[0051] The implementation principle of the laser processing system for cooling film holes in this application embodiment is as follows: A blade is placed on top of multiple placement columns 34. As the blade is placed, the placement columns 34 can form a shape that matches the blade under the action of the elastic mechanism 5 to support the blade. After the blade is placed, the electromagnet ring 332 is energized, so that the electromagnetic block 341 on the placement column 34 is attracted to the electromagnet ring 332 for fixation. Then, the position of the abutment 42 is adjusted by the moving mechanism 41, and the abutment 42 is driven to lower the abutment block 43 until the abutment block 43 abuts against the upper surface of the blade, thus completing the fixation of the blade and improving the stability of the blade during drilling.

[0052] In addition, this application also discloses the operation steps of a laser processing technique for cooling film holes:

[0053] S1. Place the blade on top of the placement column 34 and press it slightly so that the placement column 34 moves up and down with the blade outline. Multiple placement columns 34 form a placement outline that fits the blade surface. Under the support of the elastic mechanism 5, the placement column 34 makes the placement outline the same as the blade surface.

[0054] S2. Start the electromagnet ring 332. The electromagnet ring 332 and the electromagnet block 341 are attracted to each other and fix the placement column 34 respectively. After fixing, release the pressure on the blade.

[0055] S3. Use the fixing component 4 to clamp the blade. The linear motor drives the connecting rod 4121 to move along the long side of the frame 1. The push drive pushes the clamping part 42 that is slidably connected to the connecting rod 4121, so that the clamping part 42 can move along the wide side of the frame 1.

[0056] S4, the moving component 2 drives the laser dotting machine 11 to perform laser drilling on the blade.

Claims

1. A laser processing system for cooling film holes, comprising a frame (1) and a laser dotting machine (11) mounted on the frame (1), wherein a moving component (2) is provided between the laser dotting machine (11) and the frame (1), the moving component (2) being used to drive the laser dotting machine (11) to move laterally and longitudinally along the same horizontal plane of the frame (1), characterized in that: The frame (1) is provided with a placement component (3) below the laser dotting machine (11), and a fixing component (4) is provided between the placement component (3) and the laser dotting machine (11). The placement assembly (3) includes a placement box (31), a placement plate (33), and multiple placement columns (34). The placement box (31) has an upward opening, and the placement plate (33) is located at the opening of the placement box (31). Multiple placement holes (331) are vertically opened on the placement plate (33). Electromagnetic rings (332) are coaxially arranged in each placement hole (331). The placement columns (34) are located in the electromagnetic rings (332) and can slide up and down along the electromagnetic rings (332). The top of the placement column (34) is used to place the blade. Multiple electromagnetic blocks (341) are embedded on the placement column (34). The surface of the electromagnetic blocks (341) is flush with the peripheral wall of the placement column (34). The electromagnetic rings (332) are used to attract the electromagnetic blocks (341). An elastic mechanism (5) is provided at the bottom of the placement column (34). The elastic mechanism (5) is used to support the placement column (34). The fixing component (4) is connected to the frame (1), and the fixing component (4) is used to abut against the blade above the placement column (34). Multiple electromagnetic blocks (341) are evenly distributed along the peripheral sidewall of the placement column (34); The elastic mechanism (5) includes a telescopic rod (51) and an elastic element (52). One end of the telescopic rod (51) is connected to the placement column (34), and the other end is connected to the placement box (31). The elastic element (52) is sleeved around the placement column (34), and both ends of the elastic element (52) are also connected to the placement column (34) and the placement box (31) respectively. The fixing component (4) includes a moving mechanism (41), a clamping member (42), and a clamping block (43). The moving mechanism (41) is connected to the frame (1) and located above the placement column (34). The clamping member (42) is connected to the moving mechanism (41). The clamping block (43) is connected to the end of the clamping member (42) away from the moving mechanism (41). The moving mechanism (41) is used to drive the clamping member (42) to move laterally and longitudinally above the placement column (34). The clamping member (42) is used to drive the clamping block (43) to move closer to or away from the placement column (34).

2. The laser processing system for cooling film holes according to claim 1, characterized in that: The placement plate (33) and the placement box (31) are detachably connected.

3. The laser processing system for cooling film holes according to claim 1, characterized in that: A positioning plate (53) is provided between the end of the telescopic rod (51) near the placement box (31) and the placement box (31). The positioning plate (53) has positioning holes (531) that are adapted to multiple telescopic rods (51) and elastic elements (52). The telescopic rods (51) and elastic elements (52) are inserted into the positioning holes (531). The positioning plate (53) is detachably connected to the placement box (31).

4. The laser processing system for cooling film holes according to claim 1, characterized in that: The placement box (31) is slidably connected to the frame (1) and the sliding direction is lifting and sliding. The bottom of the placement box (31) is provided with a first lifting component (32), which is used to push the placement box (31) to lift and lower.

5. The laser processing system for cooling film holes according to claim 1, characterized in that: The top surface of the placement column (34) is spherical.

6. A laser processing method for cooling film holes, used in the laser processing system for cooling film holes according to any one of claims 1-5, characterized in that, The processing steps are as follows: S1. Place the blade on top of the placement column (34) and press it slightly so that the placement column (34) moves up and down with the blade outline. Multiple placement columns (34) form a placement outline that fits the blade surface. S2. Start the electromagnet ring (332). The electromagnet ring (332) and the electromagnet block (341) are attracted to each other and fix the placement column (34). After fixing, release the pressure on the blade. S3. Use the fixing component (4) to clamp the blade; S4. The moving component (2) drives the laser dotting machine (11) to perform laser drilling on the blade.

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