Special-shaped part laser cutting device for precision manufacturing of aero-engine

Abstract

The invention discloses a special-shaped part laser cutting device for precision manufacturing of an aero-engine, and relates to the technical field of laser cutting, the special-shaped part laser cutting device comprises a rack and a follow-up assembly, the follow-up assembly is arranged at the front end of the rack, and the follow-up assembly comprises mounting plates fixed to the two sides of the front end of the rack. When the laser cutting device is used, the outer edge of the explorator is tightly attached to the contact under the elastic force effect of the second spring, the sliding base slides on the guide rail in a reciprocating mode along with movement of the contact along the edge of the explorator, and therefore in the process that a workpiece moves along the track of the outer edge of the explorator, the laser cutting head conducts vertical cutting perpendicular to the surface of the workpiece; according to the laser cutting device, laser cutting machining of the special-shaped workpiece is achieved according to the profiling principle, the machining precision is guaranteed by means of precise copying of the profile, the shape of the workpiece can be rapidly changed by replacing profiles of different shapes, and the small-batch multi-variety production requirement can be met more rapidly.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting, and particularly to a special-shaped part laser cutting device for precision manufacturing of aero-engines. Background Technique

[0002] A laser cutting machine emits laser light from a laser, which is focused into a laser beam with a high power density through an optical path system. The laser beam irradiates the surface of the workpiece, causing the workpiece to reach the melting point or boiling point. As the relative position of the beam and the workpiece moves, finally a cut is formed in the material, thereby achieving the purpose of cutting.

[0003] In traditional processes, numerical control laser cutting technology is usually used to precisely cut special-shaped parts. Although numerical control cutting technology has the advantage of high cutting accuracy, it is necessary to pre-model through CAD / CAM software and generate G-code. For non-standard special-shaped parts, the path needs to be repeatedly debugged, which is time-consuming and has a low error tolerance. Moreover, every time the shape of the workpiece changes, re-programming is required, and it is impossible to quickly respond to the production requirements of small batches and multiple varieties. Summary of the Invention

[0004] The purpose of the present invention is to provide a special-shaped part laser cutting device for precision manufacturing of aero-engines to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A special-shaped part laser cutting device for precision manufacturing of aero-engines, including a frame and a follow-up component. The follow-up component is arranged at the front end of the frame. The follow-up component includes mounting plates fixed on both sides of the front end of the frame. A rotating shaft sleeve is rotatably installed inside the mounting plate through a pin shaft, and a pull rod is slidably installed axially inside the rotating shaft sleeve. The bottom end of the pull rod is fixedly connected to a swing seat, and balls are embedded on both sides of the end of the "U" - shaped structure of the swing seat. A first spring is sleeved on the swing seat, and the swing seat is elastically connected to the bottom opening of the rotating shaft sleeve through the first spring. A connecting pin is fixedly installed at the top end of the pull rod.

[0006] Further, a central pin is fixedly installed in the middle of the frame, a lever arm is rotatably installed in the middle of the central pin, and one end of the lever arm is rotatably connected to the pull rod through a connecting pin.

[0007] Further, an upper bracket is fixedly installed at the rear end of the frame, a laser cutting head is rotatably installed at the bottom of the end of the upper bracket, a connecting rod is rotatably connected to the top side of the laser cutting head, and the laser cutting head is rotatably connected to the other end of the lever arm through the connecting rod.

[0008] Further, a lower bracket is fixedly installed at the bottom end of the frame, and a contact head is arranged at the top of the end of the lower bracket.

[0009] Further, the root of the frame is welded and fixed to one side of the platform, and a guide rail is fixedly installed along the length direction on the other side of the platform. A guide rod is fixedly connected between the end of the guide rail and the side wall of the frame, and a second spring is sleeved on the guide rod.

[0010] Further, a sliding seat is slidably installed on the guide rail, and a wing plate is fixedly installed at the end of the sliding seat. The through hole on the wing plate is slidably matched with the guide rod, and the wing plate is elastically connected to the end of the guide rail through the second spring.

[0011] Further, a lifting frame is fixedly installed on the side of the sliding seat, and shaft frames are fixedly installed on both sides of the end of the sliding seat. A motor is fixedly installed on the outside of the shaft frame, and a worm fixedly connected to the rotating end of the motor is rotatably installed on the inside of the shaft frame.

[0012] Further, an installation assembly is arranged in the middle of the sliding seat. The installation assembly includes a slewing bearing fixedly installed in the middle of the sliding seat. A worm gear is rotatably installed inside the slewing bearing, and the external gear teeth of the worm gear are engaged with the helix on the worm.

[0013] Further, the installation assembly further includes a transmission screw threadedly fixed in the middle of the worm gear. A profiling template is coaxially connected to the bottom of the transmission screw. The outer edge of the profiling template is in close fit with the contact head under the elastic force of the second spring, and the inclined surface on the side end of the profiling template is in close fit with the balls on both sides of the swing seat. A gasket is arranged below the profiling template, and the profiling template is tightly fixed to the worm gear through a lower nut above.

[0014] Further, the installation assembly further includes a workpiece coaxially connected to the top of the transmission screw. A bearing is arranged below the workpiece, and the bearing is arranged at the end of the lifting frame. The workpiece is tightly fixed to the bearing through an upper nut above.

[0015] The present invention provides a special-shaped part laser cutting device for precision manufacturing of aero-engines, having the following beneficial effects; 1. When this application is in use, the outer edge of the profiling template is in close fit with the contact head under the elastic force of the second spring. Along with the movement of the contact head along the edge of the profiling template, the sliding seat reciprocally slides on the guide rail. Furthermore, during the movement of the workpiece along the trajectory of the outer edge of the profiling template, through the vertical cutting of the laser cutting head perpendicular to the surface of the workpiece, the accurate replication of the profiling template contour is realized. This application realizes the laser cutting processing of special-shaped workpieces according to the profiling principle, ensures the processing accuracy by relying on the accurate replication of the profiling template contour, and can also quickly change the shape of the workpiece by replacing profiling templates with different shapes, without reprogramming and repeatedly debugging the path for non-standard special-shaped parts, and can more quickly respond to the production requirements of small batches and multiple varieties.

[0016] 2. When this application is in use, when there is an oblique cutting requirement on the side of the special-shaped workpiece, the traditional technology often first cuts out a rough shape through a cutting device and then performs detailed processing. However, through the setting of the follower assembly in this application, along with the angular deviation of the swing seat, the bevel position and angle on the profiling template are replicated on the workpiece in equal proportion, completely solving the deficiency of the existing technology that the traditional profiling cutting equipment is restricted by the structure and the cutting torch can only move perpendicular to the surface of the workpiece, making it difficult to perform oblique cutting on the inclined surface. This enables the laser cutting device of this application to quickly adapt to the profiling cutting requirements of different special-shaped parts while also meeting the complex three-dimensional processing requirements of oblique cutting for some special-shaped parts, with stronger applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the whole device of the present invention from one perspective; Figure 2 It is a schematic structural diagram of the whole device of the present invention from another perspective; Figure 3 It is a schematic cross-sectional structural diagram of the device of the present invention; Figure 4 It is a schematic structural diagram of the mounting assembly of the present invention; Figure 5 It is a schematic structural diagram of the frame of the present invention; Figure 6 It is a schematic diagram of a partial structure of the device of the present invention; Figure 7 It is a schematic structural diagram of the follower assembly of the present invention.

[0018] In the figure: 1. Frame; 2. Follower assembly; 201. Mounting plate; 202. Rotating bushing; 203. Pull rod; 204. Swing seat; 205. Ball; 206. First spring; 207. Connecting pin; 3. Central pin; 4. Lever arm; 5. Upper bracket; 6. Laser cutting head; 7. Connecting rod; 8. Lower bracket; 9. Contact head; 10. Platform; 11. Guide rail; 12. Guide rod; 13. Second spring; 14. Slide block; 15. Wing plate; 16. Lifting frame; 17. Shaft bracket; 18. Motor; 19. Worm; 20. Mounting assembly; 2001. Slewing bearing; 2002. Worm gear; 2003. Driving screw; 2004. Profiling template; 2005. Spacer; 2006. Lower nut; 2007. Workpiece; 2008. Bearing; 2009. Upper nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following further describes in detail the embodiments of the present invention in conjunction with the drawings and examples. The following examples are used to illustrate the present invention but cannot be used to limit the scope of the present invention. Please refer to Figures 1 to 7, the present invention provides a technical solution: a special-shaped part laser cutting device for precision manufacturing of aero-engines, including a frame 1 and a follow-up component 2. The follow-up component 2 is arranged at the front end of the frame 1. The follow-up component 2 includes mounting plates 201 fixed on both sides of the front end of the frame 1. A rotating shaft sleeve 202 is rotatably installed inside the mounting plate 201 through a pin shaft. A pull rod 203 is slidably installed axially inside the rotating shaft sleeve 202. The bottom end of the pull rod 203 is fixedly connected to a swing seat 204. Ball bearings 205 are embedded on both sides of the end of the "U"-shaped structure of the swing seat 204. A first spring 206 is sleeved on the swing seat 204. The swing seat 204 is elastically connected to the bottom opening of the rotating shaft sleeve 202 through the first spring 206. A connecting pin 207 is fixedly installed at the top end of the pull rod 203. A center pin 3 is fixedly installed in the middle of the frame 1. A lever arm 4 is rotatably installed in the middle of the center pin 3. One end of the lever arm 4 is rotatably connected to the pull rod 203 through the connecting pin 207. An upper bracket 5 is fixedly installed at the rear end of the frame 1. A laser cutting head 6 is rotatably installed at the bottom of the end of the upper bracket 5. A connecting rod 7 is rotatably connected to the top side of the laser cutting head 6. The laser cutting head 6 is rotatably connected to the other end of the lever arm 4 through the connecting rod 7; The specific operation is as follows. During the rotation of the template 2004, under the elastic force of the first spring 206, the ball bearings 205 on both sides of the swing seat 204 are in close contact with the inclined surface on the side of the template 2004. When an inclined surface appears at the edge of the template 2004, one side of the ball bearings 205 is suspended, causing the pull rod 203 to swing inside the rotating shaft sleeve 202. Then, the pull rod 203 transmits power to the connecting rod 7 on the other side through the lever arm 4, thereby pulling the laser cutting head 6 to swing proportionally in the opposite direction. When a bevel edge appears on the template 2004, the position and angle of the bevel edge are replicated on the workpiece 2007 proportionally. When there is an oblique cutting requirement on the side of the special-shaped workpiece 2007, the traditional technology often first cuts out a rough shape through a cutting device and then performs detailed processing. However, through the setting of the follow-up component 2 in this application, along with the angular deviation of the swing seat 204, the position and angle of the bevel edge on the template 2004 are replicated on the workpiece 2007 proportionally, completely solving the existing technical problem that the traditional profiling cutting equipment is limited by its structure and the cutting torch can only move perpendicular to the surface of the workpiece 2007, making it difficult to perform oblique cutting on an inclined surface. This enables the laser cutting device in this application to quickly adapt to the profiling cutting requirements of different special-shaped parts while also meeting the complex three-dimensional processing requirements of oblique cutting for some special-shaped parts, with stronger applicability; Please refer to Figures 1 to 3, a lower bracket 8 is fixedly installed at the bottom end of the frame 1, and a contact 9 is provided at the top of the end of the lower bracket 8. The root of the frame 1 is welded and fixed to one side of the platform 10, and a guide rail 11 is fixedly installed along the length direction on the other side of the platform 10. A guide rod 12 is fixedly connected between the end of the guide rail 11 and the side wall of the frame 1, and a second spring 13 is sleeved on the guide rod 12. A sliding seat 14 is slidably installed on the guide rail 11, and a wing plate 15 is fixedly installed at the end of the sliding seat 14. The through hole on the wing plate 15 is slidably matched with the guide rod 12, and the wing plate 15 is elastically connected to the end of the guide rail 11 through the second spring 13. A lifting frame 16 is fixedly installed on the side of the sliding seat 14, and shaft brackets 17 are fixedly installed on both sides of the end of the sliding seat 14. A motor 18 is fixedly installed on the outside of the shaft bracket 17, and a worm 19 fixedly connected to the rotating end of the motor 18 is rotatably installed inside the shaft bracket 17; The specific operation is as follows. The outer edge of the template 2004 is in close contact with the contact 9 under the elastic force of the second spring 13. Along with the movement of the contact 9 along the edge of the template 2004, the sliding seat 14 reciprocally slides on the guide rail 11. Furthermore, during the movement of the workpiece 2007 along the trajectory of the outer edge of the template 2004, through the vertical cutting of the laser cutting head 6 perpendicular to the surface of the workpiece 2007, the accurate replication of the contour of the template 2004 is realized. This application realizes the laser cutting processing of the special-shaped workpiece 2007 according to the profiling principle, ensures the processing accuracy by relying on the accurate replication of the contour of the template 2004, and can also quickly change the shape of the workpiece 2007 by replacing the templates 2004 with different shapes, without reprogramming and repeatedly debugging the path for non-standard special-shaped parts, and can respond more quickly to the production requirements of small batches and multiple varieties; Please refer to Figures 3 to 4 , an installation assembly 20 is arranged in the middle of the sliding seat 14. The installation assembly 20 includes a slewing bearing 2001 fixedly installed in the middle of the sliding seat 14. A worm gear 2002 is rotatably installed inside the slewing bearing 2001, and the external gear teeth of the worm gear 2002 are engaged with the helix on the worm 19. The installation assembly 20 further includes a transmission screw 2003 threadedly fixed in the middle of the worm gear 2002. The bottom of the transmission screw 2003 is coaxially connected with a template 2004, and the outer edge of the template 2004 is in close contact with the contact 9 under the elastic force of the second spring 13. And the inclined surface at the side end of the template 2004 is in close contact with the ball bearings 205 on both sides of the swing seat 204. A gasket 2005 is arranged below the template 2004, and the upper part of the template 2004 is tightly fixed to the worm gear 2002 through a lower nut 2006. The installation assembly 20 further includes a workpiece 2007 coaxially connected to the top of the transmission screw 2003. A bearing 2008 is arranged below the workpiece 2007, and the bearing 2008 is arranged at the end of the lifting frame 16. The upper part of the workpiece 2007 is tightly fixed to the bearing 2008 through an upper nut 2009; The specific operation is as follows. Select the corresponding profiling template 2004 according to the shape of the special-shaped workpiece 2007 to be processed. First, place the profiling template 2004 closely against the upper surface of the worm gear 2002, then screw it into the drive screw 2003 and tighten it with the lower nut 2006. Next, place the special-shaped workpiece 2007 to be processed on the bearing 2008 at the end of the lifting frame 16 and tighten it with the upper nut 2009. Start the motor 18 to drive the worm 19 to rotate. Then, under the meshing action of the external helix of the worm 19 and the outer edge teeth of the worm gear 2002, the profiling template 2004 and the workpiece 2007 are synchronously driven by the worm gear 2002 to rotate coaxially.

[0020] In summary, when using the special-shaped part laser cutting device for precision manufacturing of aeroengines: First, select the corresponding profiling template 2004 according to the shape of the special-shaped workpiece 2007 to be processed. First, place the profiling template 2004 closely against the upper surface of the worm gear 2002, then screw it into the drive screw 2003 and tighten it with the lower nut 2006. Next, place the special-shaped workpiece 2007 to be processed on the bearing 2008 at the end of the lifting frame 16 and tighten it with the upper nut 2009. Start the motor 18 to drive the worm 19 to rotate. Then, under the meshing action of the external helix of the worm 19 and the outer edge teeth of the worm gear 2002, the profiling template 2004 and the workpiece 2007 are synchronously driven by the worm gear 2002 to rotate coaxially; Second, the outer edge of the profiling template 2004 is closely attached to the contact head 9 under the elastic force of the second spring 13. As the contact head 9 moves along the edge of the profiling template 2004, the slide seat 14 slides reciprocally on the guide rail 11. Then, during the process of the workpiece 2007 moving along the trajectory of the outer edge of the profiling template 2004, through the vertical cutting of the laser cutting head 6 perpendicular to the surface of the workpiece 2007, the precise replication of the contour of the profiling template 2004 is realized. This application realizes the laser cutting process of the special-shaped workpiece 2007 according to the profiling principle, ensures the processing accuracy by relying on the precise replication of the contour of the profiling template 2004, and can also quickly change the shape of the workpiece 2007 by replacing the profiling templates 2004 with different outer shapes, without having to reprogram and repeatedly debug the path for non-standard special-shaped parts, and can respond to the production requirements of small batches and multiple varieties more quickly; Finally, during the rotation of the template 2004, under the elastic force of the first spring 206, the balls 205 on both sides of the swing seat 204 are in close contact with the inclined surfaces at the side ends of the template 2004. When an inclined surface appears at the edge of the template 2004, one side of the ball 205 is suspended, causing the pull rod 203 to swing within the rotary sleeve 202. Then, the pull rod 203 drives the connecting rod 7 on the other side through the lever arm 4, thereby pulling the laser cutting head 6 to swing in the opposite direction proportionally. Thus, when a bevel edge appears on the template 2004, the position and angle of the bevel edge are replicated on the workpiece 2007 proportionally. When there is an oblique cutting requirement for the side of the special-shaped workpiece 2007, the traditional technology often first cuts out a rough shape through a cutting device and then performs fine processing. However, through the setting of the follow-up component 2 in this application, along with the angular deviation of the swing seat 204, the position and angle of the bevel edge on the template 2004 are replicated on the workpiece 2007 proportionally, completely solving the existing technical problem that the traditional profiling cutting equipment is limited by its structure and the cutting torch can only move perpendicular to the surface of the workpiece 2007, making it difficult to perform oblique cutting on the inclined surface. This enables the laser cutting device in this application to quickly adapt to the profiling cutting requirements of different special-shaped parts while also meeting the complex three-dimensional processing requirements of oblique cutting for some special-shaped parts, with stronger applicability.

[0021] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0022] Specific examples are used in this article to elaborate on the principles and implementation manners of the present invention. The description of the above examples is only used to help understand the method and its core idea of the present invention. The above are only the preferred implementation manners of the present invention. It should be pointed out that due to the limited nature of written expression and the objectively infinite specific structures, for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, should all be regarded as the protection scope of the present invention.

Claims

1. A laser cutting device for special-shaped parts used in the precision manufacturing of aero-engines, comprising a frame (1) and a follow-up component (2), characterized in that, A follower assembly (2) is provided at the front end of the frame (1). The follower assembly (2) includes mounting plates (201) fixed to both sides of the front end of the frame (1). A rotating bushing (202) is rotatably mounted inside the mounting plate (201) through a pin shaft. A pull rod (203) is slidably mounted axially inside the rotating bushing (202). The bottom end of the pull rod (203) is fixedly connected to a swing seat (204). Ball bearings (205) are embedded on both sides of the end of the "U" - shaped structure of the swing seat (204). A first spring (206) is sleeved on the swing seat (204). The swing seat (204) is elastically connected to the bottom - end opening of the rotating bushing (202) through the first spring (206). A connecting pin (207) is fixedly installed at the top end of the pull rod (203).

2. The special-shaped part laser cutting device for precision manufacturing of an aeroengine according to claim 1, characterized in that, A center pin (3) is fixedly installed in the middle of the frame (1). A lever arm (4) is rotatably mounted in the middle of the center pin (3). One end of the lever arm (4) is rotatably connected to the pull rod (203) through the connecting pin (207).

3. The special-shaped part laser cutting device for precision manufacturing of aero-engines according to claim 2, characterized in that, An upper support (5) is fixedly installed at the rear end of the frame (1). A laser cutting head (6) is rotatably mounted at the bottom of the end of the upper support (5). A connecting rod (7) is rotatably connected to the top side of the laser cutting head (6). The laser cutting head (6) is rotatably connected to the other end of the lever arm (4) through the connecting rod (7).

4. The special-shaped part laser cutting device for precision manufacturing of aero-engines according to claim 3, characterized in that, A lower support (8) is fixedly installed at the bottom end of the frame (1). A contact (9) is provided at the top of the end of the lower support (8).

5. The special-shaped part laser cutting device for precision manufacturing of aero-engines according to claim 4, characterized in that, The root of the frame (1) is welded and fixed to one side of the platform (10). A guide rail (11) is fixedly installed along the length direction on the other side of the platform (10). A guide rod (12) is fixedly connected between the end of the guide rail (11) and the side wall of the frame (1). A second spring (13) is sleeved on the guide rod (12).

6. The special-shaped part laser cutting device for precision manufacturing of an aero-engine according to claim 5, characterized in that, A sliding seat (14) is slidably mounted on the guide rail (11). A wing plate (15) is fixedly installed at the end of the sliding seat (14). The through - hole on the wing plate (15) is slidably matched with the guide rod (12). The wing plate (15) is elastically connected to the end of the guide rail (11) through the second spring (13).

7. The special-shaped part laser cutting device for precision manufacturing of aero-engines according to claim 6, characterized in that, A lifting frame (16) is fixedly installed on the side of the sliding seat (14). Shaft brackets (17) are fixedly installed on both sides of the end of the sliding seat (14). A motor (18) is fixedly installed outside the shaft brackets (17). A worm (19) fixedly connected to the rotating end of the motor (18) is rotatably mounted inside the shaft brackets (17).

8. The special-shaped part laser cutting device for precision manufacturing of an aero-engine according to claim 7, characterized in that, An installation assembly (20) is provided in the middle of the sliding seat (14). The installation assembly (20) includes a slewing bearing (2001) fixedly installed in the middle of the sliding seat (14). A worm gear (2002) is rotatably mounted inside the slewing bearing (2001). The external gear teeth of the worm gear (2002) are engaged with the helix on the worm (19).

9. The special-shaped part laser cutting device for precision manufacturing of aero-engines according to claim 8, characterized in that, The installation component (20) further includes a transmission screw rod (2003) threadedly fixed to the middle of the worm gear (2002). A profiling template (2004) is coaxially connected to the bottom of the transmission screw rod (2003). The outer edge of the profiling template (2004) is in close contact with the contact head (9) under the elastic force of the second spring (13). The inclined surface at the side end of the profiling template (2004) is in close contact with the ball bearings (205) on both sides of the swing seat (204). A gasket (2005) is arranged below the profiling template (2004). The profiling template (2004) is tightly fixed to the worm gear (2002) through a lower nut (2006) above it.

10. The special-shaped part laser cutting device for precision manufacturing of aero-engines according to claim 9, characterized in that, The installation component (20) further includes a workpiece (2007) coaxially connected to the top of the transmission screw rod (2003). A bearing (2008) is arranged below the workpiece (2007). The bearing (2008) is arranged at the end of the lifting frame (16). The workpiece (2007) is tightly fixed to the bearing (2008) through an upper nut (2009) above it.

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