CN108405856A - Two-machine linkage processing method and system based on 3D metal printing - Google Patents

Abstract

The invention relates to the technical field of 3D metal printing, and particularly discloses a two-machine linkage processing method and a system based on 3D metal printing, wherein the system comprises the following components: the device comprises a laser deposition device, a turntable device, a numerical control milling machine and a control system; the laser deposition device is used for printing parts and comprises: the device comprises a six-axis manipulator, a laser emitting head, a powder sprayer, a powder bin and a protective gas pipeline; the turntable device comprises a turntable, a tray and a lifting mechanism; the numerical control milling machine is used for milling parts; and the control system is used for controlling the laser deposition device, the turntable device and the numerical control milling machine so as to produce the target part in a cooperative work mode. The invention combines the laser deposition technology and the numerical control milling technology, can produce parts with complex structure, good finish and excellent quality in a matching way, and effectively solves the problems of long time consumption and low equipment utilization rate in the existing part manufacturing process, thereby improving the part quality and the production efficiency.

Description

Two-machine linkage processing method and system based on 3D metal printing

technical field

The present invention relates to the technical field of 3D metal printing, in particular to a new processing method in which additive and subtractive manufacturing are performed simultaneously, and to a complete forming system capable of realizing the technical process of the processing method.

Background technique

With the development of science and technology, various high value-added industries have continuously increased the requirements for the complexity, strength, weight, performance and uniqueness of parts. Due to fierce market competition, the development cycle required by customers is increasingly shortened. Under such circumstances, various metal additive manufacturing technologies in the industry are increasingly valued. In metal additive technology, the metal 3D printing process has become the mainstream industrial technology, which can realize product customization, complete small batch production and the production of assembly-free design and complex structural parts. Currently, the most commonly used metal additive manufacturing The technologies are direct metal laser sintering (DMLS) and laser deposition (LDM).

Direct metal laser sintering technology is a technology that uses high-power lasers to scan the metal powder on the pre-laid powder bed layer by layer based on computer 3D model data, so that the target parts are sintered layer by layer. DMLS technology first uses part slicing software to divide the target part into a layer-by-layer structure, and then the control system controls the laser equipment to sinter the laid metal powder according to the instructions to form a single-layer cross-sectional structure. After that, the powder bin will move down by one unit thickness, and the new space will be filled again by powder raw materials. After filling, the laser receives the data again and scans again. After that, the powder chamber and the laser repeat the above operations, sintering layer by layer to form a complete target part, and then remove the excess powder. Since the direct metal sintering technology is built in layers based on the 3D model, the technology can process parts with complex internal structures, and at the same time, the forming accuracy of this technology is high.

However, due to the forming principle based on the direct metal laser sintering technology and the equipment and technical methods used, this technology has the following limitations:

1. The manufacturing process of the part is to use a tray filled with powder for partial sintering in a single layer, and then lay a new layer of powder to continue sintering. Therefore, if the sintered protruding part must have a supporting structure at the bottom Support, this link increases the material consumption and prolongs the processing time.

2. The sintered structure of each layer needs to be continuous, or there must be a lower support structure to ensure that the position of the target part does not shift during processing, which increases the complexity of forming.

3. CNC equipment can only control the laser head for three-axis movement, and the angle at which the laser can be effectively emitted is limited, thus reducing the forming range. At the same time, in order to prevent the movement of the scraper from damaging the formed structure every time the powder is laid, the overhang angle of the sintered protruding part is generally required to be less than 50°.

4. The target part will be limited by the space of the powder bed. The structure of traditional equipment is complex, and the available working space is generally small, so only small parts can be manufactured.

5. If some special auxiliary structures are involved, such as structures with large chamfers, since such structures cannot be directly formed, they need to be processed in other ways and then combined with the main structure, prolonging the production process and Added technical requirements.

6. Only a single material can be used. If composite materials are used, the materials inside the powder bin will be mixed. Not only will the materials in the part structure be doped, but it will also cause pollution of the powder bin materials.

Laser metal deposition technology, which is currently the most promising laser additive technology in the market, uses a manipulator to directly hold a laser deposition device. During processing and forming, the metal powder is directly sprayed to the position to be formed through the powder sprayer, and at the same time, the laser is irradiated to melt the material, so that the material is quickly deposited at the designated position to shape the shape. The advantage of laser deposition technology is that the laser can move flexibly, and the fast and flexible movement capability allows it to manufacture more complex parts, while many complex support structures can be omitted.

However, laser metal deposition technology also has shortcomings such as low manufacturing accuracy, which leads to the following limitations of this technology:

1. Rapid sintering creates thermal stresses inside the part. As the material cools and processing progresses, the internal stresses cause the metal layer to distort. Therefore, when the metal deposit reaches a certain thickness, milling is required for shape correction.

2. The surface finish of parts manufactured by laser metal deposition is very poor, because the metal powder is directly melted to form the part. Therefore, it is necessary to improve the part quality and surface finish through the subsequent milling process.

Contents of the invention

The technical problem to be solved by the present invention is to adopt a new structure to combine laser metal deposition technology and CNC milling machine processing technology to achieve maximum processing efficiency and equipment utilization rate while improving the forming quality of parts.

In order to solve the above technical problems, the technical solution adopted by the present invention is: a two-machine linkage processing system based on 3D metal printing, which includes: a laser deposition device, a turntable device, a CNC milling machine and a control system;

The laser deposition device is used to print parts, which includes: a six-axis manipulator, a laser emitting head, a powder sprayer, a powder bin, and a protective gas pipeline. The six-axis manipulator clamps the laser emitting head and the powder sprayer, and the powder sprayer is connected Powder silo, the powder silo is used to store metal powder;

The turntable device includes a turntable, a tray and a lifting mechanism; several trays are set on the turntable; the turntable can rotate 360° horizontally and freely, driving the parts carried on the tray to move between the CNC milling machine and the six-axis manipulator; there are three-axis manipulators under the tray The lifting mechanism can drive the tray to rotate, tilt and lift;

The CNC milling machine is used for milling parts;

The control system is used to control the laser deposition device, the turntable device and the numerical control milling machine so as to work together to produce target parts.

Preferably, the turntable device is a double-station turntable device accommodating 2 trays, a turntable device accommodating 4 trays, a turntable device accommodating 6 trays, or a turntable device with a larger capacity and a special structure according to actual requirements.

Preferably, the CNC milling machine is provided with an automatic tool changer and a tool magazine for switching tools according to the actual conditions of the parts to be processed.

Preferably, an anti-slip structure is provided on the contact surface between the pallet and the lifting mechanism, so as to ensure that the pallet will not slip on the lifting mechanism during transportation.

Preferably, a displacement-limiting structure is provided between the bottom of the pallet and the turntable, so as to ensure that the pallet will not slip on the turntable during transportation, affecting processing accuracy.

In order to solve the above technical problems, another technical solution adopted by the present invention is: a two-machine linkage processing method based on 3D metal printing, which includes the following steps:

Step 1, the turntable with 4 stations is rotated to the designated position, so that the two trays A and C symmetrically placed on the turntable are respectively placed under the laser deposition device and the CNC milling machine, and the station for the laser deposition device is set as No. 1 Stations, and then according to the clockwise order of the top view, they are No. 2, No. 3, and No. 4 stations respectively. For CNC milling machines, it is No. 3 station, and then the lifting mechanism at No. Connect pallet A and drive pallet A to continue to rise to the position specified by the control system. The six-axis manipulator, laser emitter and duster receive instructions from the control system and start to process parts A on pallet A at station No. 1. Print;

Step 2: After part A is printed, the lifting mechanism of station No. 1 is lowered. When pallet A touches the turntable, the lifting mechanism of station No. 1 is disconnected from pallet A, so that tray A is placed on the turntable. Compatible with the anti-slip structure between the turntables;

Step 3, the turntable rotates for the first time, pallet A moves to the No. 2 station, and the next pallet B moves to the No. 1 station, and then the lifting mechanism of the No. The laser deposition device prints the part B on the tray B at the first station, and at the same time, the part A at the second station is cooled;

Step 4: After part B is printed, the lifting mechanism of station No. 1 is lowered. When tray B touches the turntable, the lifting mechanism of station No. 1 is disconnected from tray B, so that tray B is placed on the turntable. In line with the anti-slip structure between the turntables, the turntable rotates for the second time, pallet A moves to No. 3 station, tray B moves to No. 2 station, and the next tray C moves to No. 1 station;

Step 5, part B in tray B starts to cool down, the lifting mechanism of station No. 1 and the lifting mechanism of station No. 3 rise at the same time, connect tray C and tray A, and tray C will be laser deposited under the laser deposition device The formed part C is operated, and the part A on the pallet A will start milling under the CNC milling machine;

Step 6, according to the steps 1-5, the whole system will repeat the above actions in a cycle to ensure that the parts on the four trays are gradually formed.

Preferably, a preparation step is also included before step 1:

Design the CAD file of the 3D model of the target part, import the CAD file of the 3D model of the part into the control system, and the control system will use 3D metal printing software to split the parts, analyze them into a complete processing plan and transmit the data in real time To each part of the system, the laser deposition device receives the data, starts printing and repeats the job until all target parts are completed.

The beneficial effect that technical solution of the present invention brings is:

1. Based on laser deposition technology and milling technology, the present invention designs a brand-new connection mode and working mode, and multiple subsystems cooperate with each other to produce parts with complex structures, good finish and high quality.

2. The present invention aims at the defects of the existing traditional technological process, and effectively solves the problems of long time-consuming and low equipment utilization in the current part manufacturing process, thereby improving part quality and production efficiency.

3. The multi-station structure of the present invention provides cooling time for laser-deposited parts. Under special processing requirements, different stations can provide space for additional operations, making the overall processing process more versatile.

Description of drawings

FIG. 1 is a schematic diagram of a process of starting to deposit a first part of a part A according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of the process of placing the tray on the turntable after the first part of part A is processed, the lifting mechanism falls, and the tray is placed on the turntable according to an embodiment of the present invention.

Fig. 3 is a process schematic diagram of an embodiment of the present invention, after the turntable rotates for the first time, the lifting mechanism rises to start processing the first part of part B, and the first part of part A starts to cool down.

Fig. 4 is a schematic diagram of the second rotation of the turntable in an embodiment of the present invention, the first part of part A is sent to the CNC milling machine area, and the first part of part B enters the cooling process.

Fig. 5 is a schematic diagram of the process of starting machining of part C and starting CNC milling of the first part of part A according to an embodiment of the present invention.

Fig. 6 is a schematic structural view of a four-station turntable device according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a two-station turntable device in another implementation manner of the present invention.

Mark Description:

1 six-axis manipulator,

2 laser emitting heads,

3 dusters,

4 powder bins,

5 CNC milling machines,

6 magazines,

7 control system,

8 turntables,

9 metal deposition area lifting mechanism,

10 Part A first part,

11 part B first part,

12 Part C Part I,

13 Lifting mechanism in CNC milling machine area.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

The present invention provides a novel processing system using a customized turntable connected to a laser deposition device and a CNC milling machine, with the purpose of maximizing the utilization of the equipment and improving the overall quality of the produced parts at the same time. The structure of the turntable in the present invention will change flexibly according to the characteristics of the parts, so it is impossible to show all the designs in this manual. It should be noted that all modifications based on concepts and principles of this technical system should exist within the scope of patent protection. As mentioned above, this manual will use the turntable structure with four stations for the main description, so as to show the working principle and process of this technology in detail. At the same time, the structure diagram of the two-station and four-station turntable will be given for reference.

Figures 1 to 5 show the process of parts processing and the various components of the embodiment of the present invention, and Figure 6 shows the structure of the four-station turntable device of the embodiment.

As shown in the figure, an embodiment of the two-machine linkage processing system based on 3D metal printing of the present invention includes: a laser deposition device, a turntable device, a CNC milling machine and a control system. The above systems will work together according to the characteristics of the actual processed parts to complete the production target. Since this embodiment uses a four-station turntable device as a technical description, it is assumed that the corresponding station for laser deposition is No. 1 station, followed by No. 2, No. 3, and No. 4 stations in a clockwise order according to the top view.

Among them, the laser deposition device includes: a six-axis manipulator 1, a laser emitting head 2, a powder injector 3, a powder bin 4, and a protective gas pipeline (not shown in the figure). The six-axis manipulator 1 holds the laser emitting head 2 and the powder sprayer 3 . The powder sprayer 3 is connected to the powder bin 4, which contains the required metal powder materials. When more than one type of metal material is required, the number of powder bins 4 can be increased repeatedly to meet the process requirements.

The other side of the system is provided with a CNC milling machine 5, which can perform three-axis motion. Moreover, the CNC milling machine 5 is equipped with an automatic tool changer and a tool magazine 6, and the tool can be switched according to the actual conditions of the parts to be processed. The tool can be switched in a short time, and different types of milling can be performed more flexibly and quickly.

At the same time, the system is equipped with a comprehensive control system 7, which will control the overall system to coordinate the work of various mechanical parts to produce target parts.

The turntable device comprises a turntable 8, four pallets and a lifting mechanism. The turntable 8 can freely rotate 360° horizontally, and drives parts and pallets to freely move between the CNC milling machine and the six-axis manipulator 1 to perform different processing steps. There is a three-axis lifting mechanism under the pallet, which will drive the pallet to rotate, tilt and lift during processing. Therefore, the movement on the pallet cooperates with the movement of the six-axis manipulator to freely process the surface of the part. The turntable device will be selected according to the processing needs of different parts, and the turntable device with 2 stations, 4 stations, 6 stations or even uneven distribution according to the special forming characteristics can be selected. The turntable device with different number of stations can realize different functions. For example, the 4-station turntable can well realize the auxiliary cooling function in the processing process. After the laser deposition process is completed, the parts can be transferred to the idle station with the turntable for Cooling stage, and then transferred to the milling station for processing.

Shown according to the figure, the specific processing method of the present invention can be decomposed into the following several steps:

Preparation steps: Design the CAD file of the 3D model of the target part. During the design process, milling is required due to errors in the parts during the metal deposition process. Therefore, the drawn 3D model needs to reserve an appropriate thickness for subsequent milling. After the 3D model CAD file design is completed, import the CAD file of the 3D model of the part into the control system, and the control system will use 3D metal printing software to split the parts, analyze them into a complete processing plan and transmit the data to the system in real time For each part, the laser deposition device receives data and is ready to start printing.

Step 1: The turntable 8 with 4 stations is rotated to a designated position, so that the two trays A and C placed symmetrically on the turntable 8 are respectively placed under the laser deposition device and the CNC milling machine 5 . At this time, the lifting mechanism 9 in the metal deposition area under the laser emitting head 2 rises. When it touches the tray A, the lifting mechanism 9 in the metal deposition area will connect the tray A through the fixing mechanism. During the processing, the metal deposition area lifts up and down. The mechanism 9 can drive the tray A to rotate, tilt and move up and down through its own three-axis design. Afterwards, the lifting mechanism 9 in the metal deposition area continues to rise to the position specified by the control system 7. As shown in Figure 1, the six-axis manipulator 1, the laser emitting head 2 and the powder sprayer 3 receive instructions from the control system 7 and start to place the trays on the pallet. The printing process of the first part of part A (hereafter simply referred to as part 10) is carried out on A. At this time, the six-axis manipulator 1 drives the laser emitting head 2 and the powder injector 3 to move. When the movement reaches the designated position, the powder injector 3 starts to spray metal powder, and the laser emitting head 2 starts to shoot high-energy laser at the same time, melting the metal instantly. Powder material and deposit it on the designated location. During this process, a protective gas is continuously blown out to protect the deposited part from oxidation.

At this time, the laser emitting head will use high-intensity laser to directly melt and deposit the ejected metal powder to the position specified by the program; the powder sprayer is connected to the metal powder bin to supply the material at the set powder spraying speed. The six-axis manipulator can drive the laser emitter and powder injector to move in six axes, so the laser emitter and powder injector can flexibly and freely adjust the injection direction. With the three-axis lifting mechanism, this overall system can achieve a wide range of processing angles , in order to carry out laser metal deposition operations of complex structures. In addition, the deposition speed can also be adjusted by the moving speed of the manipulator and the feeding speed of the duster. When the parts need to use composite materials, the laser deposition device can be connected to more than one metal powder chamber, and different materials can be selected for deposition according to the instructions. For example, if a metal deposition unit is connected to a metal powder bin containing copper and steel, the powder sprayer can perform laser deposition of copper and steel on the same part, allowing for greater part complexity.

Step 2: FIG. 2 shows a schematic diagram of the process of the part 10 being processed, the lifting mechanism falling, contacting the pallet and placing it on the turntable. As shown in Figure 2, after the six-axis manipulator 1, the laser emitting head 2 and the powder sprayer 3 work together to complete the part 10, the lifting mechanism 9 in the metal deposition area slowly descends. When the tray A touches the turntable 8, the metal deposition area The lifting mechanism 9 releases the connection device, so that the pallet A is placed on the turntable 8. At the same time, there should be a structure to limit the displacement between the bottom of the pallet A and the turntable 8, which can ensure that the pallet A will not slip on the turntable 8 during transportation. , and ensure the position accuracy of pallets and parts during the entire transportation process.

Step 3: FIG. 3 shows a schematic diagram of the process of the lifting mechanism 9 in the metal deposition area rising to start processing the first part of part B (hereinafter referred to as part 11 ) after the turntable 8 rotates for the first time. After the parts 10 are deposited at the No. 1 station, with the rotation of the turntable 8, the tray A moves to the No. 2 station, and the next tray B moves to the No. 1 station. At this time, the lifting mechanism 9 in the metal deposition area moves upward again, connects to the tray B and lifts up, and cooperates with the laser deposition device to process and produce parts 11 . At this time, the structure of the second deposition can be the same as the first deposition process to produce the same part, or a completely new part structure can be produced according to the order. This turntable design gives greater flexibility to the production process, and the user can according to Mass-produce parts according to your own actual needs or produce different parts at one time.

For the part 10 in the No. 2 station at this time, you can use this idle time to cool it. Since the laser deposition process is a stack of molten metal powder, the formed part actually has a very high temperature at the moment the processing is completed. Complex stresses and not fully hardened. Therefore, for relatively large and complex parts, it must be cooled before milling to cool and harden the semi-finished parts to ensure that the internal stress is in a stable state to reduce the processing size error. In addition to the cooling effect, the unique design of this multi-station turntable gives more options to the entire processing process. For example, adding a cooling system to replace natural air cooling to speed up the cooling process, or replacing this cooling station with other processing procedures required for specific parts.

Step 4: FIG. 4 shows a schematic diagram of the process in which the turntable rotates for the second time and the parts 10 have been sent to the area of the CNC milling machine. This process is basically similar to the process in Figure 2. The lifting mechanism 9 in the metal deposition area descends and the turntable 8 rotates. At this time, the pallet A has been transferred to the third station, which is located under the CNC milling machine 5. At the same time, the pallet C is transferred to the first station. .

Step 5: FIG. 5 shows a schematic diagram of the process in which the first part of part C (hereinafter referred to as part 12 for short) starts to be machined, and part 10 starts to be CNC milled. As shown in FIG. 5 , after the rotation of the turntable 8 is completed, the parts 10 move under the CNC milling machine 5 , and the parts 11 in the pallet B start to undergo a cooling process. After that, the lifting mechanism 9 in the metal deposition area and the lifting mechanism 13 in the CNC milling machine area rise simultaneously to connect pallet C and pallet A. At this time, tray C will perform laser deposition operation under the laser deposition device to form parts 12 , while parts 10 on tray A will start milling under the CNC milling machine 5 . At this time, the CNC milling and laser deposition processes are carried out at the same time, which changes the limitation that the two processes need to wait for each other in the traditional processing technology, and greatly improves the utilization efficiency of the equipment.

Figures 1 to 5 focus on the rotation process of the turntable and its cooperation with the lifting mechanism, laser deposition device, and CNC milling machine. After the process shown in Figure 5 is over, the lifting mechanism 9 in the metal deposition area and the lifting mechanism 13 in the CNC milling machine area descend at the same time, the turntable rotates again, and new parts start to be milled and laser deposited. After positioning, the control system 7 inputs the second-layer structure instruction of the part 10, and the laser deposits on its first-layer structure to perform a new laser deposition process. Repeatedly, the parts on the four trays will be gradually printed and milled , and finally complete a product with high surface precision and excellent quality.

Fig. 6 shows the structure of the four-station turntable of the above-mentioned embodiment of the present invention. After that, the system will repeat the above steps, repeatedly forming each part of the 4 parts on the 4 turntables, and finally get four complete target parts.

Fig. 7 shows the structure of a two-station turntable according to another embodiment of the present invention.

The present invention is a complete new 3D printing equipment system combined with a turntable that can be placed on a tray, based on laser deposition technology, and coordinated with a CNC milling machine. The target part can be 3D printed, and the 3D structure modification of the laser deposited product can be carried out at the same time, and this equipment can achieve the maximum production efficiency.

The turntable device in the present invention is a structural innovative component that changes based on the characteristics of the parts. When the system produces parts with a relatively simple structure and no intermediate process, the most convenient double-station turntable that only accommodates 2 pallets can be used. According to actual needs, the turntable device can be replaced with a turntable device that can accommodate 4 trays or 6 trays at the same time, or a turntable device with a larger capacity and a special structure according to actual requirements.

The tray will be connected with the lifting mechanism that can move up and down, rotate and the top can be tilted. The lifting mechanism will control the movement of the loaded tray, and make relative movement with the laser deposition device and the CNC milling machine to complete the processing of the parts.

The contact surface between the tray and the lifting mechanism is provided with anti-movement and sliding structures, which can be concave or convex structures at the bottom, and this structure can ensure that the position of the parts will not slip during transportation. Because all the parts transfer and movement process of this system are controlled by pallets and lifting structures, it has high precision.

The present invention will generate additional stations around the turntable, providing the possibility for more complex processing, for example, equipment for special process requirements or forming processes of parts can be installed on the cooling station. It is even possible to design an exclusive turntable according to actual parts requirements, so that the number of stations for placing trays and the rotation angle can be set according to actual needs.

The invention realizes the possibility of processing multiple parts at one time. In the traditional process, laser deposition and CNC milling machine can only process one part at a time due to mutual involvement. When machining the next part, the previous product needs to be removed, which reduces the overall utilization of the equipment. When the turntable structure is used, at least two products can be completed at one time, which has doubled the traditional process. When the turntable with more stations is further used, the amount of parts that can be processed will increase rapidly, greatly reducing the labor cost. The action ratio increases the production capacity and the degree of automation, and improves the quality of the target parts.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. Protection scope, within the spirit and principles of the present invention, any modification, equivalent replacement, improvement, etc., shall be included in the protection scope of the present invention.

Claims (7)

1. a kind of two machine linkage motion cutting systems based on 3D metallic prints, which is characterized in that it includes：Laser deposition device turns Disk device, CNC milling machine and control system；

The laser deposition device, for printing part comprising：Six axis robot, laser beam emitting head, duster, powder cabin with And laser beam emitting head and duster is clamped in protective gas pipeline, six axis robot, duster connects powder cabin, and powder cabin is for storing gold Belong to powder material；

The rotating-table apparatus includes turntable, pallet and elevating mechanism；There are several pallets to be arranged on turntable；Turntable can do 360 ° of water It is flat to rotate freely, drive the part being carried in pallet to be moved between CNC milling machine and six axis robot；There are three axis under pallet Elevating mechanism, elevating mechanism can drive pallet to do to rotate, tilt and elevating movement；

The CNC milling machine is used to carry out Milling Process to part；

The control system, for controlling laser deposition device, rotating-table apparatus and CNC milling machine, with the production that cooperates Go out target part.

2. the two machine linkage motion cutting systems based on 3D metallic prints as described in claim 1, which is characterized in that the turntable dress Setting can be the double-station rotating-table apparatus for accommodating 2 pallets, the rotating-table apparatus of 4 pallets of receiving or customization rotating-table apparatus.

3. the two machine linkage motion cutting systems based on 3D metallic prints as described in claim 1, which is characterized in that the numerical control mill Bed is provided with automatic tool changer and tool magazine, for switching cutter according to the actual conditions for the part processed.

4. the two machine linkage motion cutting systems based on 3D metallic prints as described in claim 1, which is characterized in that the pallet with The structure of the contact surface setting antiskid of the elevating mechanism, to ensure that pallet will not be sent out in transportational process on elevating mechanism Raw sliding.

5. the two machine linkage motion cutting systems based on 3D metallic prints as described in claim 1, which is characterized in that the tray bottom The structure of limiting displacement is provided between portion and turntable, to ensure that pallet will not slide in transportational process on turntable.

6. a kind of two machine linkage motion cutting methods based on 3D metallic prints, which is characterized in that it includes the following steps：

Step 1, the turntable for possessing 4 stations is rotated to designated position, and two pallets A, C symmetrically placed on turntable is made to set respectively Under laser deposition device and CNC milling machine, if the station for laser deposition device is No.1 station, later according to bowing View clock-wise order is respectively No. two, No. three, No. four stations, is No. three stations for CNC milling machine, is then in No.1 The elevating mechanism of station rises, the elevating mechanism connecting trays A of No.1 station, and pallet A is driven persistently to rise to control system institute Specified position, six axis robot, laser beam emitting head and duster receive the instruction of control system, start in No.1 station The printing to part A is carried out on pallet A；

Step 2, after part A printings are completed, the elevating mechanism of No.1 station declines, when pallet A touches turntable, No.1 work The elevating mechanism releasing of position is connect with pallet A, so that pallet A is positioned on turntable, pallet A and the antiskid structure phase between turntable Agree with；

Step 3, turntable rotates for the first time, and pallet A moves to No. two stations, and next pallet B moves to No.1 station, then The elevating mechanism of No.1 station moves again up, and connecting trays B is simultaneously increased, support of the cooperation laser deposition device in No.1 station The printing to part B is carried out on disk B, while the part A in No. two stations is cooled down；

Step 4, after part B printings are completed, the elevating mechanism of No.1 station declines, when pallet B touches turntable, No.1 work The elevating mechanism releasing of position is connect with pallet B, so that pallet B is positioned on turntable, pallet B and the antiskid structure phase between turntable Agree with, second of rotation of turntable, pallet A goes to No. three stations, and pallet B moves to No. two stations, and next pallet C is moved to No.1 station；

Step 5, the part B in pallet B proceeds by cooling procedure, the lifting of the elevating mechanism of No.1 station and No. three stations Mechanism rises simultaneously, connecting trays C and pallet A, and pallet C can carry out laser deposition operation forming zero under laser deposition device Part C, and the part A on pallet A can then start to carry out Milling Process under CNC milling machine；

Step 6, according to the step 1-5, the whole system meeting above-mentioned action of circulating repetition ensures that the part on four pallets is able to Gradually shape.

7. the two machine linkage motion cutting methods based on 3D metallic prints as claimed in claim 6, which is characterized in that before step 1 It further include preparation process：

The CAD archives of the 3D models of design object part import the CAD archives of the 3D models of part in control system, Control system will utilize 3D metallic print softwares split parts, be parsed into the processing scheme of complete set and by data reality When be transmitted to system various pieces, laser deposition device receives data, starts print job and cycle operation, until completing all Target part.