A laser cutting device for special-shaped parts in precision manufacturing of an aero-engine

Abstract

The application discloses a special-shaped part laser cutting device for precise manufacturing of an aero-engine and relates to the technical field of laser cutting, which comprises a rack and a follow-up assembly. The front end of the rack is provided with the follow-up assembly. The follow-up assembly comprises mounting plates fixed to the two sides of the front end of the rack. In use, the outer edge of the profile is closely combined with the contact head under the elastic force of spring two. The slide seat reciprocatingly slides on the guide rail along with the movement of the contact head along the edge of the profile. Then, during the track movement of the workpiece along the outer edge of the profile, vertical cutting of the laser cutting head perpendicular to the surface of the workpiece is implemented, so that the profile contour is accurately copied. According to the profiling principle, the laser cutting machining of the special-shaped workpiece is implemented. The machining precision is guaranteed by accurately copying the profile contour. Moreover, the workpiece shape can be quickly changed by replacing the profiles with different shapes, and the small-batch multi-variety production demand can be more quickly responded.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting, in particular to a laser cutting device for special-shaped parts used in the precise manufacture of aircraft engines. Background Art

[0002] A laser cutting machine focuses laser light emitted from a laser generator into a high-power beam through an optical system. The laser beam strikes the surface of a workpiece, causing it to reach its melting or boiling point. As the beam and workpiece move relative to each other, a slit is formed in the material, achieving the desired cutting effect.

[0003] In traditional processes, CNC laser cutting technology is usually used to accurately cut special-shaped parts. Although CNC cutting technology has the advantage of high cutting accuracy, it requires pre-modeling and G-code generation through CAD / CAM software. For non-standard special-shaped parts, the path needs to be repeatedly debugged, which is time-consuming and has a low fault tolerance. In addition, reprogramming is required every time the workpiece shape is changed, which cannot quickly respond to the needs of small-batch and multi-variety production. Summary of the Invention

[0004] The purpose of the present invention is to provide a laser cutting device for special-shaped parts used in the precision manufacturing of aircraft engines, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A laser cutting device for special-shaped parts used for precision manufacturing of aircraft engines, comprising a frame and a follower assembly, wherein the front end of the frame is provided with a follower assembly, and the follower assembly comprises mounting plates fixed on both sides of the front end of the frame, a rotating sleeve is installed inside the mounting plate through a pin shaft, and a pull rod is installed inside the rotating sleeve along the axial sliding direction, 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 spring is provided on the swing seat, and the swing seat is elastically connected to the bottom end opening of the rotating sleeve through a spring, and a connecting pin is fixedly installed on the top of the pull rod.

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

[0007] Furthermore, an upper bracket is fixedly installed at the rear end of the frame, and a laser cutting head is rotatably installed at the bottom end of the upper bracket. A connecting rod is rotatably connected to the top side end 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] Furthermore, a lower bracket is fixedly installed at the bottom end of the frame, and a contact is provided at the top end of the lower bracket.

[0009] Further, the rack root is welded and fixed on one side of the platform, and a guide rail is fixed and installed on the length direction of 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 rack, and spring No.

[0010] Further, a sliding seat is slidingly installed on the guide rail, a wing plate is fixedly installed on the end of the sliding seat, the through hole on the wing plate is slidingly matched with the guide rod, and the wing plate is elastically connected with the end of the guide rail through spring No.

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

[0012] Further, an installation assembly is arranged in the middle of the sliding seat, the installation assembly comprises a rotary support fixedly installed in the middle of the sliding seat, a worm wheel is rotatably installed in the rotary support, and the outer circular gear teeth of the worm wheel are engaged with the spiral on the worm.

[0013] Further, the installation assembly further comprises a transmission screw threadedly fixed in the middle of the worm wheel, a die is coaxially connected to the bottom of the transmission screw, the outer edge of the die is tightly attached to the contact under the elastic force of spring No.

[0014] Further, the installation assembly further comprises 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, and the workpiece is tightly fixed above the bearing through a upper nut.

[0015] The application provides a special-shaped part laser cutting device for precise manufacturing of an aero-engine.

[0016] 1, when the application is used, the outer edge of the die is tightly attached to the contact under the elastic force of spring No.

[0017] 2、The application is used, when the side of the special-shaped workpiece has a slant cutting requirement, the traditional technology often cuts out the approximate shape first, and then processes in detail, and the application sets the follow-up assembly, and the slant edge position and angle on the template are reproduced on the workpiece in proportion with the angle offset of the swing seat, which completely solves the existing technical problems that the traditional profile cutting equipment is limited by structure, the cutting torch can only move vertically to the workpiece surface, and it is difficult to realize slant cutting of the inclined surface, so that the laser cutting device of the application can quickly adapt to the profile cutting requirements of different special-shaped parts, and also meet the complex three-dimensional processing requirements of part special-shaped slant cutting, and has higher applicability. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the device of the application;

[0019] Figure 2 It is a whole structure schematic view two of the device of the application;

[0020] Figure 3 It is a sectional view structure schematic view of the device of the application;

[0021] Figure 4 It is a structure schematic view of the installation assembly of the application;

[0022] Figure 5 It is a structure schematic view of the rack of the application;

[0023] Figure 6 It is a structure schematic view of the device of the application;

[0024] Figure 7 It is a structure schematic view of the follow-up assembly of the application.

[0025] In the figure: 1, rack; 2, follow-up assembly; 201, mounting plate; 202, rotating shaft sleeve; 203, pull rod; 204, swing seat; 205, ball; 206, spring one; 207, connecting pin; 3, center pin; 4, lever arm; 5, upper support; 6, laser cutting head; 7, connecting rod; 8, lower support; 9, contact; 10, platform; 11, guide rail; 12, guide rod; 13, spring two; 14, sliding seat; 15, wing plate; 16, lifting frame; 17, shaft frame; 18, motor; 19, worm; 20, installation assembly; 2001, rotary support; 2002, worm gear; 2003, transmission screw; 2004, template; 2005, gasket; 2006, lower nut; 2007, workpiece; 2008, bearing; 2009, upper nut. DETAILED DESCRIPTION

[0026] The embodiments of the application will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the application, but cannot be used to limit the scope of the application

[0027] Referring to Figures 1 to 7 The application provides a technical scheme: a special-shaped part laser cutting device for precise manufacturing of an aero-engine, which comprises a rack 1 and a follow-up assembly 2, the front end of the rack 1 is provided with the follow-up assembly 2, the follow-up assembly 2 comprises mounting plates 201 fixed to the front end of the rack 1 on both sides, rotating shaft sleeves 202 are rotatably installed in the mounting plates 201 through pin shafts, pull rods 203 are axially slidably installed in the rotating shaft sleeves 202, swing seats 204 are fixedly connected to the bottom ends of the pull rods 203, and rolling balls 205 are embedded on both sides of the “U”-shaped structure of the swing seats 204, spring one 206 is sleeved on the swing seats 204, the swing seats 204 are elastically connected to the bottom end openings of the rotating shaft sleeves 202 through the spring one 206, connecting pins 207 are fixedly installed at the top ends of the pull rods 203, a center pin 3 is fixedly installed in the middle of the rack 1, a lever arm 4 is rotatably installed in the middle of the center pin 3, and one end of the lever arm 4 is rotatably connected to the pull rod 203 through the connecting pin 207, an upper support 5 is fixedly installed at the rear end of the rack 1, and a laser cutting head 6 is rotatably installed at the bottom of the end of the upper support 5, a connecting rod 7 is rotatably connected to the side end top of the laser cutting head 6, and the laser cutting head 6 is rotatably connected to the other end of the lever arm 4 through the connecting rod 7.

[0028] Specific operations are as follows: in the rotating process of the profile 2004, the rolling balls 205 on both sides of the swing seat 204 are tightly attached to the inclined surfaces of the side end of the profile 2004 under the elastic force of the spring one 206, when the edge of the profile 2004 appears an inclined surface, the rolling ball 205 on one side is suspended, so that the pull rod 203 swings in the rotating shaft sleeve 202, and then the pull rod 203 drives the connecting rod 7 on the other side through the lever arm 4, and then pulls the laser cutting head 6 to swing in the opposite direction at a proportional ratio, and then when the profile 2004 appears an inclined edge, the position and angle of the inclined edge on the profile 2004 are proportionally reproduced on the workpiece 2007, when the side edge of the special-shaped workpiece 2007 has an inclined cutting demand, the traditional technology usually cuts out a general shape through a cutting device first, and then carries out detailed processing, and the application can proportionally reproduce the position and angle of the inclined edge on the profile 2004 on the workpiece 2007 along with the angle deviation of the swing seat 204, which completely solves the technical deficiency that the traditional profile cutting equipment is limited by the structure, the cutting torch can only move vertically on the surface of the workpiece 2007, and it is difficult to realize inclined cutting of the inclined surface, so that the laser cutting device of the application can not only quickly adapt to the profile cutting demand of different special-shaped parts, but also can meet the complex three-dimensional processing demand of the inclined cutting of part special-shaped parts, and has higher applicability.

[0029] Referring to Figures 1 to 3The lower support 8 is fixedly installed at the bottom end of the rack 1, and a contact 9 is arranged at the top end of the lower support 8. The rack 1 is welded and fixed to one side of a platform 10, and a guide rail 11 is fixedly installed on the other side of the platform 10 along the length direction. A guide rod 12 is fixedly connected between the end of the guide rail 11 and the side wall of the rack 1. A spring 13 is sleeved on the guide rod 12. A sliding seat 14 is slidingly installed 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 slidingly matched with the guide rod 12. The wing plate 15 is elastically connected with the end of the guide rail 11 through the spring 13. A lifting frame 16 is fixedly installed on the side of the sliding seat 14. Shaft supports 17 are fixedly installed on the two sides of the end of the sliding seat 14. A motor 18 is fixedly installed on the outer side of the shaft support 17. A worm 19 is rotatably installed on the inner side of the shaft support 17 and is fixedly connected with the rotating end of the motor 18.

[0030] Specific operation is as follows. The outer edge of the profile 2004 is tightly attached to the contact 9 under the elastic force of the spring 13. With the movement of the contact 9 along the edge of the profile 2004, the sliding seat 14 reciprocatingly slides on the guide rail 11. In the process of the workpiece 2007 moving along the track of the outer edge of the profile 2004, the vertical cutting of the laser cutting head 6 perpendicular to the surface of the workpiece 2007 realizes the accurate copying of the profile 2004 contour. According to the profiling principle, the laser cutting machining of the special-shaped workpiece 2007 is realized. The accurate copying of the profile 2004 contour guarantees the machining precision. The shape of the workpiece 2007 can be quickly changed by replacing the profile 2004 with different shapes. It is not necessary to reprogram and repeatedly debug the path of the non-standard special-shaped workpiece. The production demand of small batch and multi-variety can be more quickly responded.

[0031] 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 comprises a rotary support 2001 fixedly installed in the middle of the sliding seat 14. A worm wheel 2002 is rotatably installed in the rotary support 2001. The outer circular gear of the worm wheel 2002 is engaged with the spiral on the worm 19. The installation assembly 20 further comprises a transmission screw 2003 threadedly fixed in the middle of the worm wheel 2002. A profile 2004 is coaxially connected to the bottom of the transmission screw 2003. The outer edge of the profile 2004 is tightly attached to the contact 9 under the elastic force of the spring 13. The inclined surface at the side end of the profile 2004 is tightly attached to the two sides of the ball 205 of the swing seat 204. A gasket 2005 is arranged below the profile 2004. The profile 2004 is tightly fixed above the worm wheel 2002 through a lower nut 2006. The installation assembly 20 further comprises a workpiece 2007 coaxially connected to the top of the transmission screw 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 above the bearing 2008 through an upper nut 2009.

[0032] The specific operation is as follows: according to the shape of the special-shaped workpiece 2007 to be processed, a corresponding template 2004 is selected, the template 2004 is first placed close to the upper surface of the worm wheel 2002, then screwed into the transmission screw 2003 and fastened through the lower nut 2006, then the special-shaped workpiece 2007 to be processed is placed on the bearing 2008 at the end of the lifting frame 16 and fastened through the upper nut 2009, the motor 18 is started and drives the worm 19 to rotate, and then under the biting action of the external helix of the worm 19 and the outer edge teeth of the worm wheel 2002, the template 2004 and the workpiece 2007 are coaxially rotated by the worm wheel 2002.

[0033] In summary, when using the special-shaped part laser cutting device for precise manufacturing of the aircraft engine:

[0034] First, according to the shape of the special-shaped workpiece 2007 to be processed, a corresponding template 2004 is selected, the template 2004 is first placed close to the upper surface of the worm wheel 2002, then screwed into the transmission screw 2003 and fastened through the lower nut 2006, then the special-shaped workpiece 2007 to be processed is placed on the bearing 2008 at the end of the lifting frame 16 and fastened through the upper nut 2009, the motor 18 is started and drives the worm 19 to rotate, and then under the biting action of the external helix of the worm 19 and the outer edge teeth of the worm wheel 2002, the template 2004 and the workpiece 2007 are coaxially rotated by the worm wheel 2002;

[0035] Secondly, the outer edge of the template 2004 is tightly attached to the contact 9 under the elastic force of the spring 13, and the sliding seat 14 is reciprocally slid on the guide rail 11, and then in the process of the workpiece 2007 moving along the contour of the template 2004, the laser cutting head 6 is perpendicular to the surface of the workpiece 2007, and the contour of the template 2004 is accurately copied, the laser cutting of the special-shaped workpiece 2007 is realized according to the profiling principle, the processing precision is ensured by accurately copying the contour of the template 2004, and the shape of the workpiece 2007 can be quickly changed by replacing the template 2004 with different shapes, without reprogramming and repeatedly debugging the path of the non-standard special-shaped part, which can more quickly respond to the production demand of small batch and multi-variety;

[0036] Finally, during the rotation of the die 2004, the balls 205 on both sides of the swing seat 204 are tightly attached to the inclined surface of the side end of the die 2004 under the elastic force of the spring 206, and when the edge of the die 2004 appears an inclined surface, the ball 205 on one side is suspended to make the pull rod 203 swing in the rotating shaft sleeve 202, and then the pull rod 203 drives the connecting rod 7 on the other side through the lever arm 4, and then pulls the laser cutting head 6 to swing in the opposite direction at a proportional ratio, and then when the die 2004 appears an inclined edge, the position and angle of the inclined edge on the workpiece 2007 are copied at a proportional ratio, and when the side edge of the special-shaped workpiece 2007 has a slant cutting requirement, the traditional technology often cuts out the approximate shape first, and then carries out detailed processing, and the present application copies the position and angle of the inclined edge on the die 2004 on the workpiece 2007 at a proportional ratio with the angle offset of the swing seat 204, which completely solves the technical defects of the prior art that the structure of the traditional profiling cutting device is limited, the cutting torch can only move vertically on the surface of the workpiece 2007, and it is difficult to realize slant cutting on the inclined surface, so that the laser cutting device of the present application can not only quickly adapt to the profiling cutting requirements of different special-shaped parts, but also can meet the complex three-dimensional processing requirements of part special-shaped slant cutting, and has stronger applicability.

[0037] It should be noted that in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles, or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles, or devices.

[0038] The principles and implementation modes of the present application are described by using specific examples in this document, and the above examples are only used to help understand the method of the present application and its core idea. The above is only the preferred embodiment of the present application, and it should be pointed out that due to the limitation of language expression, there are infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, decorations or changes can be made without departing from the principles of the present application, and the above technical features can also be combined in a proper way; these improvements, decorations, changes or combinations, or the direct application of the inventive concept and technical scheme to other occasions without improvement, should be regarded as the protection scope of the present application.

Claims

1. A laser cutting device for special-shaped parts in the precision manufacturing of an aero-engine, comprising a frame (1) and a follower assembly (2), characterized in that, The front end of the rack (1) is provided with a follow-up assembly (2), the follow-up assembly (2) includes the mounting plate (201) fixed to the both sides of the front end of the rack (1), the inside of the mounting plate (201) is rotatably connected with the rotating shaft sleeve (202) through the pin shaft, the inside of the rotating shaft sleeve (202) is slidably connected with the pull rod (203) along the axial direction, the bottom end of the pull rod (203) is fixedly connected with the swing seat (204), the both sides of the "U" shaped structure tail end of the swing seat (204) is embedded with the ball (205), the swing seat (204) is sleeved with the spring one (206), the swing seat (204) is elastically connected with the bottom end opening of the rotating shaft sleeve (202) through the spring one (206), the top end of the pull rod (203) is fixedly installed with the connecting pin (207), the middle part of the rack (1) is fixedly installed with the center pin (3), the middle part of the center pin (3) is rotatably installed with the lever arm (4), one end of the lever arm (4) is rotatably connected with the pull rod (203) through the connecting pin (207), the rear end of the rack (1) is fixedly installed with the upper support (5), the tail end bottom of the upper support (5) is rotatably installed with the laser cutting head (6), the side end top of the laser cutting head (6) is rotatably connected with the connecting rod (7), the laser cutting head (6) is rotatably connected with the other end of the lever arm (4) through the connecting rod (7), the bottom end of the rack (1) is fixedly installed with the lower support (8), the tail end top of the lower support (8) is provided with the contact (9), the root of the rack (1) is welded and fixed on one side of the platform (10), the other side of the platform (10) is fixedly installed with the guide rail (11) along the length direction, the guide rail (11) is fixedly connected with the guide rod (12) between the end and the side wall of the rack (1), the guide rod (12) is sleeved with the spring two (13), the guide rail (11) is slidably installed with the sliding seat (14), the end of the sliding seat (14) is fixedly installed with the wing plate (15), the through hole on the wing plate (15) is slidably connected with the guide rod (12), the wing plate (15) is elastically connected with the end of the guide rail (11) through the spring two (13), the side of the sliding seat (14) is fixedly installed with the lifting frame (16), the both sides of the end of the sliding seat (14) are fixedly installed with the shaft support (17), the outer side of the shaft support (17) is fixedly installed with the motor (18), the inner side of the shaft support (17) is rotatably installed with the worm (19) fixedly connected with the rotating end of the motor (18).

2. The laser cutting device for aero-engine precision manufacturing of a special-shaped part according to claim 1, characterized in that, The middle part of the sliding seat (14) is provided with the mounting assembly (20), the mounting assembly (20) includes the slewing bearing (2001) fixedly installed in the middle part of the sliding seat (14), the inside of the slewing bearing (2001) is rotatably installed with the worm gear (2002), the outer circular gear teeth of the worm gear (2002) are engaged with the spiral on the worm (19).

3. The laser cutting device for the special-shaped part of the precision manufacturing of the aero-engine according to claim 2, characterized in that, The installation assembly (20) further comprises a transmission screw (2003) fixed in the middle of the worm gear (2002) by screwing, the bottom of the transmission screw (2003) is coaxially connected with a template (2004), the outer edge of the template (2004) is tightly combined with the contact (9) under the elastic force of the second spring (13), the inclined surface of the side end of the template (2004) is tightly combined with the two side ball bearings (205) of the swing seat (204), the lower part of the template (2004) is provided with a gasket (2005), and the upper part of the template (2004) is fixedly connected with the worm gear (2002) by the lower nut (2006).

4. The laser cutting device for the special-shaped part of the aero-engine precision manufacturing according to claim 3, characterized in that, The installation assembly (20) further comprises a workpiece (2007) coaxially connected to the top of the transmission screw (2003), the lower part of the workpiece (2007) is provided with a bearing (2008), and the bearing (2008) is arranged at the end of the lifting frame (16), the upper part of the workpiece (2007) is fixedly connected with the bearing (2008) by the upper nut (2009).

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