CN112338209A

CN112338209A - Laser material-increasing and material-reducing composite five-axis machining forming equipment and machining method

Info

Publication number: CN112338209A
Application number: CN202011195787.3A
Authority: CN
Inventors: 王成勇; 杨洋; 文琢; 刘建业; 戚文军; 郭紫莹
Original assignee: Guangdong University of Technology
Current assignee: Guangdong University of Technology
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-02-09

Abstract

The invention relates to the technical field of laser material increasing and decreasing composite machining, in particular to laser material increasing and decreasing composite five-axis machining forming equipment and a machining method. The forming device comprises a forming device, a light path switching device and a pulse laser light source, the forming device comprises a forming cabin, a machining device, a powder spreading device, a powder cylinder, a forming cylinder, a powder collecting device, a chain type tool magazine and a lifting device are respectively arranged in the forming cabin, and an online monitoring device is arranged on the outer wall of the forming cabin; the device is characterized by further comprising a scanning galvanometer device and a beam expanding device, wherein the online monitoring device, the scanning galvanometer device and the beam expanding device are sequentially connected. The invention greatly improves the dimensional accuracy, the surface quality and the inner cavity surface processing effect of the processed parts, can efficiently process and manufacture parts with high-requirement structures such as complex threads, runners, inner cavities and the like by one-step forming, and solves the processing problems that the traditional processing center is difficult to complete at one time and needs a plurality of devices and a plurality of post-processing procedures.

Description

Laser material-increasing and material-reducing composite five-axis machining forming equipment and machining method

Technical Field

The invention relates to the technical field of laser material increasing and decreasing composite machining, in particular to laser material increasing and decreasing composite five-axis machining forming equipment and a machining method.

Background

Selective Laser Melting (SLM) is an additive manufacturing technique in which metal powder is melted by a laser beam in a selected region and then condensed and formed. The technology is particularly suitable for manufacturing workpieces with complex surfaces or complex inner runners and special-shaped holes, has the advantages of saving processing materials, processing time and the like, but is difficult to manufacture in the large-scale industrial production with high precision requirements, and the technology has the problems of low one-step forming precision, low manufacturing efficiency and high equipment cost in manufacturing precision aerospace and electronic die products.

For the technical problems, the technology and equipment for composite processing of two processes of laser material increase and mechanical cutting are currently available, for example, an OPM250L equipment of Sodick corporation in Japan adds a four-axis linkage processing unit on the basis of SLM, and an LASERTEREC 653 DYBRID equipment of DMG MORI corporation in Germany adds a five-axis processing unit on the basis of LMD. In addition, some patented solutions are such as: similar inventions are also proposed in a five-axis material-increasing and material-decreasing composite processing device (CN 109228336A), a material-increasing and material-decreasing composite processing device (CN 109604598A), a five-axis material-increasing and material-decreasing composite manufacturing machine tool (CN 104384936A) and the like. The existing complex part additive manufacturing equipment, additive and subtractive composite processing products and related patents have the following technical problems which cannot be solved:

1. when a metal part, particularly a complex inner cavity, is prepared by the SLM technology in the prior art, the roughness of the upper surface of the unsupported inner cavity is very large, and the defects such as burrs, metal balls, cracks and the like are easily generated, and the problems cannot be solved by a machining device in the prior art or eliminated by subsequent machining;

2. the traditional mechanical material reduction processing can not realize the unconventional fine surface with a large inclination angle, has high requirement on the surface quality of an inner cavity channel and a fine structure, and has low processing efficiency;

3. aiming at different printing materials, a single laser generator is difficult to meet the processing requirements;

4. in the current material increasing and decreasing patent, the majority of five-axis machining is combined with a coaxial powder feeding additive manufacturing technology (LENS), and the printing precision is limited by the technology and is not enough to meet the use requirement;

5. at present, a composite processing method of increasing and decreasing materials layer by layer is adopted, so that the time for starting and switching light paths and the time for moving a mechanical material reducing unit are greatly increased.

Disclosure of Invention

In view of the above, the present invention provides a processing apparatus and a processing method having composite manufacturing technologies such as continuous laser additive manufacturing, pulsed laser subtractive manufacturing, machining subtractive manufacturing, and the like.

The technical scheme of the invention is as follows:

the laser material-increasing and material-reducing composite five-axis machining forming equipment is characterized by comprising a forming device, a light path switching device and a pulse laser light source, wherein the forming device comprises a forming cabin, the forming cabin is internally provided with the machining device, a powder spreading device, a powder cylinder, a forming cylinder, a powder collecting device, a chain type tool magazine and a lifting device, and the outer wall of the forming cabin is provided with an online monitoring device; the on-line monitoring device, the scanning galvanometer device and the beam expanding device are sequentially connected;

one side of the light path switching device is connected with a continuous laser generator; and the optical path switching device is respectively connected with the beam expanding device and the pulse laser source.

Further, an A shaft and a C shaft are also arranged in the forming cabin; the shaft A and the shaft C are arranged below the forming cylinder and the powder cylinder.

Further, the machining device comprises an X shaft, a Y shaft, a Z shaft, a cutter main shaft and a cutter head, and the machining device is arranged above the forming cylinder and is positioned in the same plane with the chain type tool magazine, the opening and the central axis of the forming cylinder.

Furthermore, an opening is further arranged in the forming cabin, the opening is located right above the forming cylinder, and the opening is connected with the online monitoring device and the scanning galvanometer device respectively.

Further, the respective lifting devices are positioned below the forming cylinder and the powder cylinder.

Furthermore, a deflectable galvanometer mechanism is arranged in the optical path switching device and is connected with a beam expanding device of the forming device. The method comprises the steps of selecting and reflecting between continuous laser light and pulse laser light, and selecting the continuous laser light for the device to perform additive manufacturing or selecting the pulse laser light for processing.

Furthermore, the pulse laser light source consists of a disc laser library, a servo motor and a pulse laser generator, wherein the disc laser library is driven by the servo motor to rotate, and the selected pulse laser generator is rotated to a position connected with the light path switching device.

Further, the pulsed laser light source comprises one or more pulsed laser light generators;

further, the pulse laser source comprises one or more compounds of pulse laser generators with different powers, the power of the pulse laser source comprises one or more compounds of 250w, 500w and 1000w, and the pulse laser source provides corresponding processing capability for easily processed metals (aluminum alloy), general metals (stainless steel and titanium alloy) and difficultly processed metals (tungsten alloy and tantalum alloy).

In particular, the pulse laser is used for performing laser cutting material reduction processing on the surface and the fine structure of the workpiece after printing and forming.

The machining method of the laser material increase and decrease composite five-axis machining forming equipment is characterized by comprising the following machining steps of:

s1, powder is paved from a powder cylinder to a forming cylinder by a powder paving device;

s2, performing additive machining on the powder by adopting continuous laser, and melting and condensing metal powder to form a layer to be machined;

s3, selecting a specified pulse laser to perform laser material reduction processing on the surface and the microstructure of the part after printing and forming;

and S4, reducing the material of the area to be processed of the part by adopting a mechanical processing device.

Further, in the machining process, an online monitoring device is adopted to monitor the machined part and feed back the machining quality or the state of a molten pool, so that subsequent machining parameters and a machining area are adjusted.

Further, before the material reduction processing of the pulse laser, the selected pulse laser generator should be rotated to a proper position, and the galvanometer in the optical path switching device should be rotated to a proper angle to provide the required laser for the forming device 1.

Further, after the disk laser library is rotated to a designated position, a pulse laser galvanometer device in the optical path switching device is adjusted, pulse laser is transmitted into an optical path of the equipment to provide laser for a laser cutting process, and meanwhile, a continuous laser generator for additive manufacturing is closed.

Further, the processing of different materials requires switching to their specific continuous laser parameters and pulsed laser light sources; the laser material reducing processing of the same material needs to be switched among various pulse lasers according to the processing position, size and shape, and the material reducing processing is completed in a matching mode.

Further, the disc laser library can rotate in three processing modes of laser material increase, laser material reduction and mechanical material reduction to replace a laser generator, rotates around the circle center of the disc laser library when rotating, and can do linear motion in the vertical and longitudinal directions under the conditions of standby, starting, dismounting and the like.

Further, the processing platform should be preheated and inspected in an initial position before starting the processing.

Further, in laser and mechanical cutting processing, a powder spreading device and a powder collecting device are adopted to remove powder materials near the area to be processed.

Furthermore, when the forming cylinder is in five-axis linkage, the powder collecting device surrounding the outer circle of the forming cylinder is used for collecting metal powder spilled along with the inclination of the angle.

In the invention, the continuous laser power for additive processing is 200w, and the maximum power can reach 1000 w; the pulse laser power for the material reduction processing is preferably 250w, 500w and 800 w; the positioning precision of a mechanical unit for reducing the material can reach 0.5 mu m, and the rotating speed of a main shaft can reach 60000 r/min; the external contour and the inner cavity surface with the included angle of less than or equal to 45 degrees with the vertical line and the surface roughness Ra of less than 1.5 mu m can be directly processed; the precision die or the aircraft engine part with the inner groove and the inner hole structure can be formed at one time in a high-precision manner, and the typical structural dimension characteristic is less than 0.5 mm; the thin-wall structural part with high surface quality can be formed at one time, and the thickness of the thin-wall structural part is less than 0.08 mm.

The invention has the beneficial effects that:

(1) the invention realizes the mixed manufacturing of high-efficiency, one-step forming, low-cost and high-precision production of complex parts, realizes the composite manufacturing of three processing modes of metal powder melting solidification forming, laser material reduction and mechanical cutting on the same equipment, and directly processes the complex parts with high precision and high surface quality from powder to finished products.

(2) The invention solves the problems of large surface roughness of the metal unsupported inner cavity and the generation of defects such as burrs, metal balls, cracks and the like in the prior art. And the high-precision processing of unconventional fine surfaces with large inclination angles, internal cavities with high surface quality requirements, fine structures and the like is realized.

(3) The invention provides a set of brand-new processing method, which utilizes the high degree of freedom of a five-axis machine tool to change the once material reducing processing for each printed layer into the once material reducing processing after printing a plurality of layers, so that the 'line processing' of each printed layer is changed into the 'surface processing' of a plurality of printed layers, the cutting quality is improved, and the processing time is greatly shortened.

(4) The laser material increasing and decreasing manufacturing equipment and the manufacturing method provided by the invention are used for processing complex inner cavity surface structures such as inner flow channels and inner threads by combining a laser material increasing and manufacturing technology and three processes of laser cutting and mechanical cutting, so that the comprehensive, efficient and high-precision one-step forming of 3D printed metal parts is realized, the surface quality and the dimensional precision of the parts are improved, and the integration of material increasing and decreasing manufacturing is completed.

Drawings

FIG. 1 is a schematic view of the structure of a molding apparatus of the present invention;

FIG. 2 is a schematic view of a partial structure of the molding apparatus of the present invention;

FIG. 3 is a schematic view showing a partial structure of the molding apparatus of the present invention;

FIG. 4 is a schematic view showing a partial structure of the molding apparatus of the present invention;

FIG. 5 is a schematic view showing a partial structure of the molding apparatus of the present invention;

FIG. 6 is a process flow diagram of a process of the present invention;

description of main component symbols: the device comprises a forming device 1, an optical path switching device 2, a pulse laser light source 3, a machining device 11, a continuous laser generator 12, an opening 13, a powder spreading device 14, a powder cylinder 15, a forming cylinder 16, a powder collecting device 17, a chain type tool magazine 18, a lifting device 19, an online monitoring device 110, a scanning galvanometer device 111, a beam expanding device 112, an A shaft 113, a C shaft 114, a forming cabin 115, an X shaft 1101, a Y shaft 1102, a Z shaft 1103, a tool spindle 1104, a tool bit 1105, a pulse laser galvanometer device 21, a pulse laser generator 31 and a disc type laser magazine 32.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The embodiment provides a laser material-increasing and material-reducing composite five-axis machining forming device, which is used for forming and machining products, and referring to fig. 1-5. The laser material increasing and decreasing composite machining equipment comprises a forming cabin 115, a chain type tool magazine 18, a machining device 11, an online monitoring device 110, a scanning galvanometer device 111, a beam expanding device 112, a light path switching device 2, a continuous laser generator 12, a pulse laser source 3, an opening 13, a powder spreading device 14, a powder cylinder 15, a forming cylinder 16, a powder collecting device 17, a lifting device 19, an A shaft 113 and a C shaft 114.

The chain type tool magazine 18, the machining device 11, the opening 13, the powder spreading device 14, the powder cylinder 15, the molding cylinder 16, the powder collecting device 17, the lifting device 19, the a shaft 113 and the C shaft 114 are arranged in the molding cabin 115.

The chain type tool magazine 18 is arranged on the inner wall of the forming cabin 115, is matched with the machining device 11 for use, can be used for placing a thread milling cutter, a grinding head, a round nose cutter, a flat-head cutter, a T-shaped cutter, a non-standard cutter and the like, and can be used for automatically replacing cutters on the machining device 11 according to machining requirements.

The machining device 11 includes an X axis 1101, a Y axis 1102, a Z axis 1103, a tool spindle 1104, and a tool bit 1105, and is disposed above the forming cylinder 16, and is located in the same plane as the central axes of the chain magazine 18, the opening 13, and the forming cylinder 16. Can move in three axial directions and can be used for milling, grinding, drilling and the like on the outer surface, the runner surface, the thread surface and the like of the part in the forming cylinder 16. If the surface of the molded product has defects such as burrs, the machining device 11 may use a milling cutter to mill the surface to be machined.

The A shaft 113 and the C shaft 114 are arranged below the forming cylinder 16 and the powder cylinder 15, so that the forming cylinder 16 can rotate and can be matched with the machining device 11 for use, the effect of 5-shaft linkage is achieved, and the laser material reduction and mechanical cutting have the capability of processing most surfaces of parts. If the molded product has a surface with an inclination angle larger than 90 °, the a-axis 113 and the a-axis 114 can be rotated and the X-axis 1101, the Y-axis 1102 and the Z-axis 1103 can be moved to be engaged therewith, so that the tool-tip 1105 and the pulsed laser are positioned at the position of the surface of the machinable part.

The continuous laser generator 12 is connected with the optical path switching device 2 and is used for emitting continuous laser to perform additive manufacturing. The pulse laser source 3 is connected with the optical path switching device 2 and used for emitting pulse laser and manufacturing laser cutting materials, wherein the pulse laser can be short pulse laser and ultrafast pulse laser, and can be nanosecond, picosecond and femtosecond pulse laser.

The optical path switching device 2 is respectively connected with the beam expanding device 112, the continuous laser generator 12 and the pulse laser source 3, a vibrating mirror mechanism 21 is arranged in the optical path switching device, continuous laser or reflected pulse laser is transmitted through rotating the vibrating mirror angle, the optical path switching device is used for selectively switching between the continuous laser generator 12 and the pulse laser source 3, and corresponding laser light sources are selectively communicated or closed according to different processing requirements.

The beam expanding device 112 is used for adjusting the laser beam provided by the optical path switching device 2, and receiving a corresponding instruction to modify the radius and the divergence angle of the laser beam according to different processing requirements.

The scanning galvanometer device 111 can be used for adjusting the laser beam provided by the beam expanding device 112 and realizing the focusing and moving of the laser beam on the area to be processed.

The opening 13 is located right above the forming cylinder 16, and is connected to the on-line monitoring device 110 and the scanning galvanometer device, and can be used for providing an emission opening for the laser beam and providing a visual field and thermal insulation requirements for the on-line detection device 11.

The pulse laser light source 3 is composed of a disc laser library 32, a servo motor (not marked) and a pulse laser generator 31, wherein the disc laser library is driven by the servo motor to rotate, and the selected pulse laser generator is rotated to a position connected with the light path switching device.

The pulsed laser light source comprises one or more pulsed laser light generators;

the pulse laser light source comprises one or more compounds of pulse laser light generators with different powers, the power of the pulse laser light source comprises one or more compounds of 250w, 500w and 1000w, and corresponding processing capabilities are provided for easily processed metals (aluminum alloy), common metals (stainless steel and titanium alloy) and difficultly processed metals (tungsten alloy and tantalum alloy).

The on-line monitoring device 110 is connected to the opening 13, is disposed on the outer wall of the forming chamber 115, and can monitor the real-time processing state in the forming cylinder 16, and collect processing information, such as the size of the molten pool, the state of the molten pool, the quality of the surface to be processed, the position of the machining device 11, the powder state, the positions of the a-axis 113 and the C-axis 114, and the like. The on-line monitoring device 110 may adopt information acquisition devices such as a CCD or CMOS high-speed camera, a plasma receiver, a temperature sensor, a thermal imaging sensor, etc., and is connected to a computer or a processing center host, feeds back processing information, and allows an upper computer to adjust and modify processing parameters and processing states in real time, thereby realizing closed-loop control of the processing process.

The powder spreading device 14 can be used for spreading the powder material in the powder cylinder 15 into the forming cylinder 16, and the excessive powder in the forming cylinder 16 can be stripped into the powder collecting device 17. Additionally, the powder spreading device 14 can be used to remove excess powder around the surface to be machined, for example, when machining a large area of the part to be machined. Additionally, the powder collection device 17 may be used to collect powder spilled with angular tilting in the forming cylinder when performing five-axis mechanical movements.

The lifting device 19 is positioned below the forming cylinder 16 and the powder cylinder 15, can be used for lifting up and down, adjusts the heights of the processed parts in the forming cylinder 16 and the powder in the powder cylinder 15, and is matched with the machining device 11 for cutting and the pulse laser to ensure the completion of cutting.

Example 2

The embodiment provides a processing method of a laser material-increasing and material-reducing composite five-axis machining forming device, which refers to fig. 6, and includes the following processing steps:

s1, paving powder from a powder cylinder to a forming cylinder;

s2, melting the powder by adopting continuous laser to perform additive manufacturing;

s3, after the area to be formed is cooled and solidified, judging the size and thickness of the part to be processed on the workpiece, if the size and thickness are lower than a certain thickness, repeating the step S1, and if the thickness reaches a certain thickness, entering the step S4;

s4, rotating the disc laser library, namely rotating the specified pulse laser generator to be connected with the light path switching device, adjusting the position of a vibrating mirror of the light path switching device, and preparing to provide a light source for a laser reduction material; moving the mechanical processing device, selecting and installing a designated cutter from the chain type tool magazine by the cutter spindle, and providing a cutter for mechanical cutting;

s5, judging whether an area which cannot be subjected to material reduction processing exists in the current position, wherein the area comprises a large-angle inclined plane, an inner runner, an inner thread and the like;

s6, if an area which cannot be subjected to material reduction processing at the current position exists, rotating an A, C shaft, moving a X, Y, Z shaft, and adjusting the relative position between the area to be processed and the cutter and the laser head;

s7, cutting the workpiece by adopting two modes of mechanical cutting and pulse laser, simultaneously rotating an A, C shaft, moving a X, Y, Z shaft, and adjusting the relative position between the region to be processed and the cutter and the laser head to be matched for processing;

and S8, after the machining is finished, judging whether the machined part meets the machining requirements such as surface roughness, burrs and the like by using an online monitoring device, if not, repeating the step S7, if so, continuously judging whether the next machining area needing material reduction exists, and if so, restarting from the step S4. If the cutting process is completed, the process proceeds to step S9;

s9, rotating an A, C shaft, moving a X, Y, Z shaft, and moving a machining device and a forming cylinder to an appointed position for continuous laser additive manufacturing;

s10, judging whether the target workpiece completes additive machining, if not, restarting from the step S1, and if so, entering the step S11;

s11, finishing machining, enabling the A, C, X, Y, Z shaft, the laser head and the powder laying device to return to the initial coordinate position, and enabling the lifting device to push the parts in the forming cylinder to ascend to the position where the parts can be taken out smoothly.

The laser material-increasing and material-reducing composite machining equipment and the laser material-increasing and material-reducing composite machining method combine the rapid forming advantages of traditional SLM material-increasing and material-reducing manufacturing equipment, so that metal powder is formed to metal parts at one time, meanwhile, pulse laser is combined to perform laser cutting machining and five-axis mechanical cutting machining to complete material-increasing and material-reducing composite manufacturing, an A axis and a C axis are arranged on the surfaces of complex inner cavities which are difficult to machine, such as inner flow channels and internal threads, five-axis linkage machining is achieved, and in addition, an online monitoring system is additionally arranged to achieve closed-loop control over the whole machining quality and the machining process.

By the method, the continuous laser power for additive processing is 200w, and the maximum continuous laser power can reach 1000 w; the pulse laser power for the material reduction processing is preferably 250w, 500w and 800 w; the positioning precision of a mechanical unit for reducing the material can reach 0.5 mu m, and the rotating speed of a main shaft can reach 60000 r/min; the external contour and the inner cavity surface with the included angle of less than or equal to 45 degrees with the vertical line and the surface roughness Ra of less than 1.5 mu m can be directly processed; the precision die or the aircraft engine part with the inner groove and the inner hole structure can be formed at one time in a high-precision manner, and the typical structural dimension characteristic is less than 0.5 mm; the thin-wall structural part with high surface quality can be formed at one time, and the thickness of the thin-wall structural part is less than 0.08 mm.

In conclusion, the invention greatly improves the dimensional accuracy, the surface quality and the inner cavity surface processing effect of the processed parts, can efficiently process and manufacture parts with high-requirement structures such as complex threads, runners, inner cavities and the like by one-step forming, solves the processing problems that the traditional processing center is difficult to finish at one step, needs a plurality of devices and various post-processing procedures, and provides a scientific and effective solution for the material increase and decrease composite manufacturing.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art. It should be noted that the technical features not described in detail in the present invention can be implemented by any prior art.

Claims

1. The laser material-increasing and material-reducing composite five-axis machining forming equipment is characterized by comprising a forming device, a light path switching device and a pulse laser light source, wherein the forming device comprises a forming cabin, the forming cabin is internally provided with the machining device, a powder spreading device, a powder cylinder, a forming cylinder, a powder collecting device, a chain type tool magazine and a lifting device, and the outer wall of the forming cabin is provided with an online monitoring device; the on-line monitoring device, the scanning galvanometer device and the beam expanding device are sequentially connected;

2. The laser material-increasing and material-decreasing composite five-axis machining forming device according to claim 1, wherein an axis A and an axis C are further arranged in the forming cabin; the shaft A and the shaft C are arranged below the forming cylinder and the powder cylinder.

3. The laser material increasing and decreasing composite five-axis machining forming device according to claim 2, wherein an opening is further formed in the forming cabin, the opening is located right above the forming cylinder, and the opening is connected with the online monitoring device and the scanning galvanometer device respectively.

4. The laser material increasing and decreasing composite five-axis machining molding device according to claim 3, wherein the pulse laser light source is composed of a disc laser bank, a servo motor and a pulse laser generator.

5. The laser additive-subtractive composite five-axis machining molding apparatus according to claim 4, wherein the pulsed laser light source comprises one or more pulsed laser generators; the pulse laser light source comprises one or more compounds of pulse laser light generators with different powers, and the power of the pulse laser light source comprises one or more compounds of 250w, 500w and 1000 w.

6. The machining method of the laser material increase and decrease composite five-axis machining forming equipment is characterized by comprising the following machining steps of:

7. The machining method of the laser material increasing and decreasing composite five-axis machining forming equipment as claimed in claim 6, wherein in the machining process, an online monitoring device is adopted to monitor the machined part and feed back machining quality or a molten pool state, so that subsequent machining parameters and a machining area are adjusted.

8. The machining method of laser material-increasing and material-decreasing composite five-axis machining forming equipment as claimed in claim 6, wherein before the material-decreasing machining of the pulse laser, the selected pulse laser generator is rotated to a proper position, and the vibrating mirror in the optical path switching device is rotated to a proper angle to provide the required laser for the forming device.

9. The machining method of laser material-increasing and material-reducing composite five-axis machining forming equipment as claimed in claim 6, wherein after the disk laser library is rotated to a specified position, a pulse laser galvanometer device in the optical path switching device is adjusted to transmit pulse laser into the optical path of the equipment, so that laser is provided for a laser cutting process, and a continuous laser generator for additive manufacturing is turned off.

10. The machining method of the laser material increasing and decreasing composite five-axis machining forming device as claimed in claim 6, wherein the disc laser library can rotate in three machining modes of laser material increasing, laser material decreasing and mechanical material decreasing to replace a laser generator, rotates around the center of a circle of the disc laser library when rotating, and can perform linear motion in the vertical and longitudinal directions under the conditions of standby, starting and dismounting.