A turbocharger housing machining system and method

Abstract

The present invention discloses a turbocharger housing machine tool processing system and method for engraving a traceable two-dimensional code on a workpiece, which can set the optimal laser irradiation power, irradiation angle and laser transmitter travel speed of the laser engraving machine according to the color and material information of the workpiece processing material, establish a corresponding relationship between the processing material and the control parameters of the laser engraving system, and enhance the scanning recognition of the two-dimensional code. In addition, the two-dimensional code is distributedly engraved and marked by analyzing the structural morphology existing in the workpiece processing process, solving the problems that the paper two-dimensional code is easy to damage, the shape is difficult to fix, and the engraving area of ​​some processed parts is small, thereby improving the production efficiency of the turbocharger housing.

Description

Technical Field

[0001] The present invention relates to a machine tool processing system and method, and in particular to a system and method for generating a traceable two-dimensional code engraving of a turbocharger housing by using a laser engraving machine. Background Art

[0002] With the development of intelligent manufacturing, the entire process of intelligent manufacturing of mechanical parts needs to be tracked and recorded. Usually, many processing steps are required from processing materials to finished parts. In the prior art, two-dimensional code labels made of paper materials are often pasted on processed parts to facilitate traceability management of the production process, but there are the following problems: First, the pasted labels are easy to wear off; second, if the body area of ​​the processed material is small or the curvature is large, a smaller two-dimensional code label needs to be set, which is not convenient for scanning and identification on the one hand, and different two-dimensional code labels need to be printed according to the size and process of the processed material on the other hand, which is inefficient and difficult to manage; third, the pasted two-dimensional code area may need to be cut off during the machining process, and a label of appropriate size needs to be pasted and printed again. This brings great trouble to production and manufacturing. In addition, there are also methods in the prior art that use lasers to engrave two-dimensional code logos on workpieces, but they still cannot overcome the above problems and will also cause the problem of low contrast of the engraved two-dimensional code, poor scanning recognition effect or inability to recognize due to the color of the material. Summary of the invention

[0003] The present invention provides a turbocharger housing machine tool processing system for engraving a traceable two-dimensional code on a workpiece, the system comprising an MES system, a machining machine tool, and a laser engraving machine tool; the MES system stores processing task information, the processing task information comprising attribute information of a raw material of a workpiece, structural information of the workpiece, a processing procedure flow, and a machining control program; the attribute information of the raw material of the workpiece comprises raw material color, material, and structural information of the raw material; the machining machine tool is used for workpiece processing; the laser engraving machine tool is used for completing two-dimensional code engraving on the workpiece; the MES system is communicatively connected with the machining machine tool and the laser engraving machine tool through a data interface; the laser engraving machine tool comprises a control unit, a laser engraving system, and a fixture; the fixture is used for positioning the workpiece, and the laser engraving system completes the two-dimensional code engraving on the workpiece.

[0004] Furthermore, the MES system also includes a QR code generation unit and a control program generation unit. The QR code generation unit is used to generate electronic QR code information; the control program generation unit is used to generate a QR code engraving control program according to the processing task information and the electronic QR code information.

[0005] Furthermore, the control program generation unit of the MES system is also used to insert a QR code engraving process.

[0006] Furthermore, the MES system also includes a tracking and scanning unit, which includes a barcode scanner, and the barcode scanner can scan a QR code and record process information.

[0007] The present invention also provides a turbocharger housing machining method, which is applied to a machine tool machining system to generate a traceable two-dimensional code, comprising the following steps:

[0008] S1: The MES system obtains the attribute information of the raw material of the workpiece, and the control program generation unit of the MES system generates the size parameters of the QR code engraving area and the fixture positioning parameters according to the raw material structure information and the workpiece structure information; and generates the laser irradiation power parameters, irradiation angle parameters and laser transmitter travel speed parameters according to the color and material information of the raw material;

[0009] S2: The control program generation unit generates a QR code engraving program according to the above parameters and the electronic QR code information generated by the MES system QR code generation unit;

[0010] S3: according to the workpiece processing procedure, the QR code engraving program is sent to the laser engraving machine through the data interface;

[0011] S4: placing the workpiece on the laser engraving fixture;

[0012] S5: The laser engraving machine controls the laser engraving fixture to a predetermined position according to the QR code engraving program, and performs QR code engraving on the workpiece.

[0013] Further, the generation of the irradiation power parameters and the laser transmitter head travel speed parameters includes: if the hardness of the workpiece material is high and the vaporization temperature is high, it is necessary to increase the irradiation power and reduce the laser transmitter head travel speed; the generation of the irradiation angle parameters includes: if the color contrast between the workpiece material after oxidation and before oxidation is small, it is necessary to adjust the irradiation angle so that diffuse reflection is formed in the information bit area.

[0014] Further, the step S1 also includes: generating the base laser irradiation power parameter, irradiation angle parameter and laser transmitter travel speed parameter according to the color and material information of the processed material;

[0015] The step S1 may further include the following steps:

[0016] S0: Insert the QR code engraving process of the workpiece, as follows:

[0017] S0-1: The control program generation unit of the MES system obtains the structural information of the workpiece to be processed, the processing process flow, the processing control program, and the attribute information of the raw materials; parses the structural information of the processed part after each processing process flow, and displays the raw material structure, the structure of the processed part after each process flow, and the structure of the finished processed part in the order of processing on the MES system interface in accordance with the processing process flow, wherein the surface of the raw material structure is given an initial color, and the part of the surface of the processed part that changes after each process is represented by a different color;

[0018] S0-2: starting from the raw material structure surface, traversing the color information of the workpiece structure surface after each process flow, identifying the unchanged surface area according to the color information, using a type of identification frame to identify the unchanged surface area, and when the type of identification frame can be surrounded by the edge of the unchanged surface area, the area identified by the type of identification frame is determined to be a type of engraving area;

[0019] S0-3: When the raw material structure, the workpiece structure in the processing flow, and the finished product structure all have the same type of engraving area, the same type of engraving area is used as the QR code engraving area of ​​the entire processing flow of the workpiece; when the position of the type of engraving area of ​​the workpiece after a certain process changes, a type of engraving area QR code engraving process is inserted after the process until the finished product is processed; when the type of engraving area does not exist in the workpiece after a certain process, the type of identification frame is folded into a type of type identification frame, and when the type of type identification frame can be surrounded by the edge of the unchanged surface area, and the number of unchanged surface areas of the same workpiece is greater than 2, the area identified by the type of type identification frame is identified as the type of type of engraving area; a type of type of type of engraving area QR code engraving process is inserted after the process until the finished product is processed;

[0020] S0-4: When there are no first and second type of engraving areas on the workpiece after a certain process, the second type of identification frame is folded in half along the middle line of the long side to obtain a third type of identification frame. When the third type of identification frame can be surrounded by the edge of the unchanged surface area of ​​the workpiece, and the unchanged surface area is greater than 4, the area identified by the third type of identification frame is deemed to be a third type of engraving area; a third type of engraving area QR code engraving process is inserted after this process until the finished product is obtained.

[0021] Further, the size of the first type of identification frame is determined according to the size of the two-dimensional code to be engraved, and the side length of the first type of identification frame is set to be greater than or equal to 1.2 times the side length of the two-dimensional code.

[0022] The further process of engraving the two-dimensional code in the second type of engraving area is: obtaining the electronic two-dimensional code information generated by the two-dimensional code generation unit, dividing the two-dimensional code into two equal parts along a middle line of an edge, adding an alignment information to each part of the two-dimensional code information, and engraving the part of the two-dimensional code information with the alignment information added in the second type of engraving area.

[0023] Further, the process of engraving the two-dimensional codes in the three types of engraving areas is as follows: obtaining the electronic two-dimensional code information generated by the two-dimensional code generation unit, dividing the two-dimensional code into four equal parts along the middle line of two adjacent sides, attaching an alignment information to each part of the two-dimensional code information, and engraving the part of the two-dimensional code information attached with the alignment information in the three types of engraving areas.

[0024] Further, the alignment information includes a QR code ID number and an equal division number, wherein the equal division number is to number the equal division QR code information in a clockwise direction.

[0025] Further, the unchanged surface area includes a plane and a curved surface, and the curved surface needs to satisfy that the curvature is less than a certain threshold and the curvature is the same in a bending direction.

[0026] Beneficial effects: The present invention provides a turbocharger housing machine tool processing system and method for engraving a traceable QR code on a workpiece. The optimal laser irradiation power, irradiation angle and laser head travel speed of the laser engraving machine can be set according to the color and material information of the workpiece processing material, and the corresponding relationship between the processing material and the control parameters of the laser engraving system is established, thereby enhancing the scanning recognition of the QR code. In addition, the QR code is distributedly engraved and marked by analyzing the structural morphology existing in the workpiece processing process, solving the problems of easy damage of paper QR codes, poor shape fixation, and small engraving area of ​​some processed parts, thereby improving the production efficiency of turbocharger housings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Generate system schematics for the traceability QR code of the turbocharger housing;

[0028] Figure 2 This is the color marking diagram of the structure surface after each process of the cuboid processing part;

[0029] Figure 3 This is the color marking diagram of the structure surface after each process of the cylindrical processing part;

[0030] Figure 4 Schematic diagram for identifying a type of engravable area for a logo frame;

[0031] Figure 5 A schematic diagram of a class of changes in the engraving area;

[0032] Figure 6 It is the schematic diagram of the identification box of categories one, two and three;

[0033] Figure 7 This is the principle diagram of equally divided QR code. DETAILED DESCRIPTION

[0034] Embodiment 1: Figure 1 As shown, the present invention provides a turbocharger housing machine tool processing system for engraving a traceable two-dimensional code on a workpiece, the system comprising an MES system (manufacturing enterprise production process execution system), a machining machine tool, and a laser engraving machine tool; the MES system stores processing task information, the processing task information comprising attribute information of the raw materials of the workpiece, the structural information of the workpiece, the processing process flow, and the machining control program; the attribute information of the raw materials of the workpiece comprises the color, material, and structural information of the raw materials; the machining machine tool is used for workpiece processing; the laser engraving machine tool is used to complete the engraving of the two-dimensional code on the workpiece; the MES system is communicated with the machining machine tool and the laser engraving machine tool through a data interface; the laser engraving machine tool comprises a control unit, a laser engraving system, and a fixture; the fixture is used for positioning the workpiece, and the laser engraving system completes the engraving of the two-dimensional code on the workpiece.

[0035] Further, the laser engraving system includes a laser emission head;

[0036] Furthermore, the workpiece structure information refers to the structure information of the parts that are ultimately to be processed and formed in the processing task.

[0037] The MES system also includes a two-dimensional code generation unit and a control program generation unit. The two-dimensional code generation unit is used to generate electronic two-dimensional code information; the control program generation unit is used to generate a two-dimensional code engraving control program according to the processing task information and the electronic two-dimensional code information;

[0038] The control program generation unit generates two-dimensional code engraving area size parameters and fixture positioning parameters according to raw material structure information and workpiece structure information; and generates laser irradiation power parameters, irradiation angle parameters and laser transmitter travel speed parameters according to the color and material information of the raw material.

[0039] The material includes material type and model: for example, common steel includes ordinary steel, special steel, stainless steel and other types, and stainless steel models include 304, 316, 410, etc. The raw material structure information includes type and size, such as cylinder, radius R (25mm), length L (200mm); rectangular, width W (50mm), height H (50mm), length (200mm); hollow cylinder, outer diameter (40mm), inner diameter (30CM), length (200mm), etc.;

[0040] Due to the different colors and materials of the processed materials, in order to generate a QR code with a high degree of distinction for easy scanning and identification, it is necessary to set the appropriate laser irradiation power, irradiation angle, and irradiation time, so that the QR code information bit area is fully oxidized to form a stable oxidation color. For processing materials with a small degree of distinction between the color contrast before and after oxidation, it is also necessary to use different irradiation angles to form diffuse reflection in the information bit area to increase the color contrast of the information bit and enhance the subsequent scanning success rate. The method currently adopted by the intelligent processing center is to conduct quantitative engraving processing experiments on frequently used processing materials. Through a large number of experiments, the optimal laser irradiation power, irradiation angle, and laser head travel speed for commonly used processing materials have been found, and the corresponding relationship between the processing materials and the control parameters of the laser engraving system has been established, which significantly enhances the scanning recognition of the QR code.

[0041] Embodiment 2: Based on Embodiment 1, the control program generation unit of the MES system is further used to insert a QR code engraving process; specifically: the control program generation unit obtains the structural information of the workpiece to be processed, the processing process flow, the processing control program, and the attribute information of the raw material; parses the structural information of the processed part after each processing process flow, and displays the raw material structure, the processed part structure after each process flow, and the finished processed part structure in the order of processing on the MES system interface according to the processing process flow, wherein the surface of the raw material structure is given an initial color, and the part of the surface of the processed part that changes after each process is represented by a different color; such as Figure 2 As shown, taking the processing of a step workpiece as an example (due to the requirements of the application document writing, the colors are represented by numbers), the surface of the raw material rectangular parallelepiped structure is all assigned color 1, and the upper surface of the rectangular parallelepiped is processed by process one. After process one, the surface of the processed area is marked as color 2, and the surface of the unprocessed area still retains color 1. Similarly, if the workpiece continues to be processed by process two, the surface of the processed area is marked as color 3, and the surface of the unprocessed area still retains color 1.

[0042] Starting from the surface of the raw material structure, the color information of the surface of the processed part structure after each process flow is traversed, and the unchanged surface area is identified according to the color information. The unchanged surface area is identified with a type of identification frame. When the type of identification frame can be surrounded by the edge of the unchanged surface area, the area identified by the type of identification frame is identified as a type of engraving area; when the raw material structure, the processed part structure in the processing flow, and the finished part structure all have the same type of engraving area, the same type of engraving area is used as the QR code engraving area of ​​the entire processing flow of the workpiece; when the position of the type of engraving area of ​​the processed part after a certain process changes (which means If a QR code is engraved in the first type of engraving area, the QR code may be processed after this process), then a QR code engraving process for the first type of engraving area is inserted after this process until the finished product is obtained; when there is no first type of engravable area on the workpiece after a certain process, the first type of identification frame is folded in half into a second type of identification frame. When the second type of identification frame can be surrounded by the edge of the unchanged surface area, and the number of unchanged surface areas of the same workpiece is greater than 2, the area identified by the second type of identification frame is deemed to be a second type of engravable area; then a QR code engraving process for the second type of engravable area is inserted after this process until the finished product is obtained.

[0043] For example: Figure 3 A1 represents the structure diagram of the raw material cylinder, A2 represents the structure diagram of the processed part after process one, and A3 represents the structure diagram of the processed part after process two. The numbers in the figure represent colors, and different numbers represent different colors (used to identify the surface of the area that has not changed). The area marked with the same number represents the surface area that has not changed after the corresponding process. In the figure, the area marked with color 1 after the raw material has gone through two processes is the surface area that has not changed; Figure 4 As shown, the surface edges of the area with identification color 1 in A1, A2, and A3 can all surround a type of identification frame, so the surface of the area with identification color 1 is a type of engraving area. It is only necessary to select the same position in a type of engraving area in A1, A2, and A3 according to the size of the QR code to be engraved and engrave the QR code on the surface of the raw material structure.

[0044] like Figure 5 As shown, there are areas in A1, A2, and A3 that can enclose a type of identification frame.

[0045] The same position can be selected to engrave the QR code in A1 and A2, but the area that can surround a type-one identification frame in A3 has changed, that is, the area that can engrave the QR code has changed after process two. The QR codes engraved in A1 and A2 may be erased in process two, so it is necessary to insert a type-one engraving area QR code engraving process after process two; the example in the figure is only used to illustrate the example in the process planning of QR code engraving for processed parts, and is not used to limit the structural dimensions and processes of the processed parts. It does not only include machining processes, but in fact it also includes electroplating, drilling, grinding, polishing and other processes.

[0046] Further, the size of the first type of identification frame is determined according to the size of the QR code to be engraved. Usually, the side length of the first type of identification frame is set to be greater than or equal to 1.2 times the side length of the QR code. The reason is that a base surface needs to be made before engraving the QR code to facilitate enhancing the contrast and improving scanning recognition.

[0047] Furthermore, when there are no first and second type of engraving areas in the workpiece after a certain process, the second type identification frame is folded in half along the middle line of the long side to obtain a third type identification frame. When the third type identification frame can be surrounded by the edge of the unchanged surface area of ​​the workpiece, and the unchanged surface area is greater than 4, the area marked by the third type identification frame is considered to be a third type of engraving area; then a third type of engraving area QR code engraving process is inserted after this process until the finished product is obtained. Figure 6 As shown, the first, second and third type identification frames and fold lines are shown respectively.

[0048] The second type of engraving area two-dimensional code engraving process further comprises: obtaining the electronic two-dimensional code information generated by the two-dimensional code generating unit, dividing the two-dimensional code into two equal parts along a middle line of an edge, adding an alignment information to each part of the two-dimensional code information, and engraving the part of the two-dimensional code information with the alignment information added in the second type of engraving area;

[0049] Further, the process of engraving the two-dimensional codes in the three types of engraving areas is as follows: obtaining the electronic two-dimensional code information generated by the two-dimensional code generation unit, dividing the two-dimensional code into four equal parts along the middle line of two adjacent sides, attaching an alignment information to each part of the two-dimensional code information, and engraving the part of the two-dimensional code information attached with the alignment information in the three types of engraving areas.

[0050] The further alignment information includes the QR code ID number and the equal division numbering. The equal division numbering is to number the equally divided QR code information in a clockwise direction. For example, if it is divided into two equal parts, any one of them is numbered as 1 and the other is numbered as 2. If it is divided into four equal parts, any one of them is selected as number 1. With the center point of the two-digit code as the center of the circle, they are numbered 2, 3, and 4 in a clockwise direction. The QR code ID number and the equal division numbering information are attached to one edge of the corresponding equally divided QR code in the form of a QR code dot matrix pattern. The QR code ID number can be the number set by the intelligent machining center for the convenience of management of the QR code used. Figure 7 For example, the four equally divided QR codes are numbered clockwise and the alignment information is attached.

[0051] Further, the unchanged surface area includes a plane and a curved surface, and the curved surface needs to satisfy a curvature less than a certain threshold, and the curvature is the same in a bending direction. Because when the curvature is large, the curved surface is more curved, and if a QR code is engraved, the image will be greatly deformed during scanning, resulting in inaccurate scanning and recognition. This is one of the reasons why the present invention splits a QR code into multiple parts for engraving.

[0052] Embodiment 3: A method for machining a turbocharger housing is provided, which is applied to the machining system in Embodiments 1 and 2 to generate a traceable QR code, and includes the following steps:

[0053] S1: The MES system obtains the attribute information of the raw material of the workpiece, and the control program generation unit of the MES system generates the QR code engraving area size parameters and the fixture positioning parameters according to the raw material structure information and the workpiece structure information; and generates the laser irradiation power parameters, irradiation angle parameters and laser transmitter travel speed parameters according to the color and material information of the raw material.

[0054] S2: The control program generation unit generates a QR code engraving program according to the above parameters and the electronic QR code information generated by the MES system QR code generation unit;

[0055] S3: according to the workpiece processing procedure, the QR code engraving program is sent to the laser engraving machine through the data interface;

[0056] S4: The operator places the workpiece on the laser engraving fixture:

[0057] S5: The laser engraving machine controls the laser engraving fixture to a predetermined position according to the QR code engraving program, and performs QR code engraving on the workpiece.

[0058] Further, the generation of the irradiation power parameters and the laser transmitter head travel speed parameters includes: if the hardness of the workpiece material is high and the vaporization temperature is high, it is necessary to increase the irradiation power and reduce the laser transmitter head travel speed; the generation of the irradiation angle parameters includes: if the color contrast between the workpiece material after oxidation and before oxidation is small, it is necessary to adjust the irradiation angle so that diffuse reflection is formed in the information bit area.

[0059] Further, the step S1 also includes: generating the base laser irradiation power parameter, irradiation angle parameter and laser transmitter travel speed parameter according to the color and material information of the processed material;

[0060] The priming method is: before engraving the two-dimensional code information position, a certain area on the workpiece is first scanned with a laser so that the area forms a stable and uniform surface color, which is convenient for subsequent two-dimensional code engraving and scanning and recognition steps to form a more suitable recognition background color.

[0061] Embodiment 4: Based on Embodiment 3: before step S1, the following steps are also included:

[0062] S0: Insert the QR code engraving process of the workpiece, as follows:

[0063] S0-1: The control program generation unit of the MES system obtains the structural information of the workpiece to be processed, the processing process flow, the processing control program, and the attribute information of the raw materials; parses the structural information of the processed part after each processing process flow, and displays the raw material structure, the structure of the processed part after each process flow, and the structure of the finished processed part in the order of processing on the MES system interface in accordance with the processing process flow, wherein the surface of the raw material structure is given an initial color, and the part of the surface of the processed part that changes after each process is represented by a different color;

[0064] S0-2: starting from the raw material structure surface, traversing the color information of the workpiece structure surface after each process flow, identifying the unchanged surface area according to the color information, using a type of identification frame to identify the unchanged surface area, and when the type of identification frame can be surrounded by the edge of the unchanged surface area, the area identified by the type of identification frame is determined to be a type of engraving area;

[0065] S0-3: When the raw material structure, the workpiece structure in the processing flow, and the finished product structure all have the same type of engraving area, the same type of engraving area will be used as the QR code engraving area of ​​the entire processing flow of the workpiece; when the position of the type of engraving area of ​​the workpiece changes after a certain process, a type of engraving area QR code engraving process is inserted after the process until the finished product is processed; when the type of engraving area does not exist in the workpiece after a certain process, the type of identification frame is folded into a type of type two identification frame. When the type of type two identification frame can be surrounded by the edge of the unchanged surface area, and the number of unchanged surface areas of the same workpiece is greater than 2, the area identified by the type of type two identification frame is identified as the type of type two engraving area; a type of type two engraving area QR code engraving process is inserted after the process until the finished product is processed.

[0066] S0-4: When there are no first and second type of engraving areas on the workpiece after a certain process, the second type of identification frame is folded in half along the middle line of the long side to obtain a third type of identification frame. When the third type of identification frame can be surrounded by the edge of the unchanged surface area of ​​the workpiece, and the unchanged surface area is greater than 4, the area identified by the third type of identification frame is deemed to be a third type of engraving area; a third type of engraving area QR code engraving process is inserted after this process until the finished product is obtained.

[0067] Further, the size of the first type of identification frame is determined according to the size of the two-dimensional code to be engraved, and the side length of the first type of identification frame is set to be greater than or equal to 1.2 times the side length of the two-dimensional code.

[0068] The further process of engraving the two-dimensional code in the second type of engraving area is: obtaining the electronic two-dimensional code information generated by the two-dimensional code generation unit, dividing the two-dimensional code into two equal parts along a middle line of an edge, adding an alignment information to each part of the two-dimensional code information, and engraving the part of the two-dimensional code information with the alignment information added in the second type of engraving area.

[0069] Further, the process of engraving the two-dimensional codes in the three types of engraving areas is as follows: obtaining the electronic two-dimensional code information generated by the two-dimensional code generation unit, dividing the two-dimensional code into four equal parts along the middle line of two adjacent sides, attaching an alignment information to each part of the two-dimensional code information, and engraving the part of the two-dimensional code information attached with the alignment information in the three types of engraving areas.

[0070] The alignment information further includes a QR code ID number and an equal division number.

[0071] Further, the unchanged surface area includes a plane and a curved surface, and the curved surface needs to satisfy that the curvature is less than a certain threshold and the curvature is the same in a bending direction.

[0072] Embodiment 5: Based on Embodiment 1, the MES system further includes a tracking and scanning unit, and the tracking and scanning unit includes a barcode scanner, and the barcode scanner can scan a QR code and record process information.

[0073] Further, the barcode scanner scans and obtains the two-dimensional code image data, and the tracking scanning unit determines whether the two-dimensional code image data contains a complete two-dimensional code. If yes, the two-dimensional code information is scanned and identified; if not, the two-dimensional code information in the image is determined to be divided into several equal parts. All the equally divided two-dimensional code information is obtained, and the equally divided two-dimensional code images of the same two-dimensional code are spliced ​​according to the alignment information of the equally divided two-dimensional code information to form a complete two-dimensional code image, and then the information is identified.

[0074] The above is only a specific embodiment of the present invention or an explanation of a specific embodiment. The protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A turbocharger housing machining method, applied to a machining system to generate a traceable QR code, the machining system comprising: MES system, machining machine tool, laser engraving machine tool; the MES system also includes a two-dimensional code generation unit and a control program generation unit; the two-dimensional code generation unit is used to generate electronic two-dimensional code information; the control program generation unit is used to generate a two-dimensional code engraving control program according to the processing task information and the electronic two-dimensional code information, and is also used to insert a two-dimensional code engraving process, characterized in that: the method includes the following steps: S0: Insert the QR code engraving process of the workpiece, as follows: S0-1: The control program generation unit of the MES system obtains the structural information of the workpiece to be processed, the processing process flow, the processing control program, and the attribute information of the raw materials; parses the structural information of the processed part after each processing process flow, and displays the raw material structure, the structure of the processed part after each process flow, and the structure of the finished processed part in the order of processing on the MES system interface in accordance with the processing process flow, wherein the surface of the raw material structure is given an initial color, and the part of the surface of the processed part that changes after each process is represented by a different color; S0-2: starting from the raw material structure surface, traversing the color information of the workpiece structure surface after each process flow, identifying the unchanged surface area according to the color information, using a type of identification frame to identify the unchanged surface area, and when the type of identification frame can be surrounded by the edge of the unchanged surface area, the area identified by the type of identification frame is determined to be a type of engraving area; S0-3: When the raw material structure, the workpiece structure in the processing flow, and the finished product structure all have the same type of engraving area, the same type of engraving area is used as the QR code engraving area of ​​the entire processing flow of the workpiece; when the position of the type of engraving area of ​​the workpiece after a certain process changes, a type of engraving area QR code engraving process is inserted after the process until the finished product is processed; when the type of engraving area does not exist in the workpiece after a certain process, the type of identification frame is folded into a type of type identification frame, and when the type of type identification frame can be surrounded by the edge of the unchanged surface area, and the number of unchanged surface areas of the same workpiece is greater than 2, the area identified by the type of type identification frame is identified as the type of type of engraving area; a type of type of type of engraving area QR code engraving process is inserted after the process until the finished product is processed; S0-4: When there are no first and second type engraving areas on the workpiece after a certain process, the second type identification frame is folded in half along the middle line of the long side to obtain a third type identification frame. When the third type identification frame can be surrounded by the edge of the unchanged surface area of ​​the workpiece, and the unchanged surface area is greater than 4, the area marked by the third type identification frame is considered to be a third type engraving area; then a third type engraving area QR code engraving process is inserted after this process until the finished product is obtained; S1: The MES system obtains the attribute information of the raw material of the workpiece, and the control program generation unit of the MES system generates the size parameters of the QR code engraving area and the fixture positioning parameters according to the raw material structure information and the workpiece structure information; and generates the laser irradiation power parameters, irradiation angle parameters and laser transmitter travel speed parameters according to the color and material information of the raw material; S2: The control program generation unit generates a QR code engraving program according to the above parameters and the electronic QR code information generated by the MES system QR code generation unit; S3: according to the workpiece processing procedure, the QR code engraving program is sent to the laser engraving machine through the data interface; S4: placing the workpiece on the laser engraving fixture; S5: The laser engraving machine controls the laser engraving fixture to a predetermined position according to the QR code engraving program, and performs QR code engraving on the workpiece.

2. The processing method according to claim 1, characterized in that: The generation of the irradiation power parameters and the laser transmitter head travel speed parameters includes: if the hardness of the workpiece material is high and the vaporization temperature is high, it is necessary to increase the irradiation power and reduce the laser transmitter head travel speed; the generation of the irradiation angle parameters includes: if the color contrast between the workpiece material after oxidation and before oxidation is small, it is necessary to adjust the irradiation angle so that diffuse reflection is formed in the information bit area.

3. The processing method according to claim 2, characterized in that: The step S1 also includes: generating the primer laser irradiation power parameter, irradiation angle parameter and laser emission head travel speed parameter according to the color and material information of the workpiece material.

4. The processing method according to claim 3, characterized in that: The size of the first-class identification frame is determined according to the size of the two-dimensional code to be engraved, and the side length of the first-class identification frame is set to be greater than or equal to 1.2 times the side length of the two-dimensional code.

5. The processing method according to claim 4, characterized in that: The two-dimensional code engraving process of the second type of engraving area is: obtain the electronic two-dimensional code information generated by the two-dimensional code generation unit, divide the two-dimensional code into two equal parts along a middle line of an edge, add an alignment information to each part of the two-dimensional code information, and engrave the part of the two-dimensional code information with the alignment information added in the second type of engraving area.

6. The processing method according to claim 5, characterized in that: The process of engraving the two-dimensional codes in the three types of engraving areas is as follows: obtaining the electronic two-dimensional code information generated by the two-dimensional code generation unit, dividing the two-dimensional code into four equal parts along the middle line of two adjacent sides, attaching an alignment information to each part of the two-dimensional code information, and engraving the part of the two-dimensional code information attached with the alignment information in the three types of engraving areas.

7. The processing method according to claim 6, characterized in that: The alignment information includes a two-dimensional code ID number and an equal division number, wherein the equal division number is to number the equal division two-dimensional code information in a clockwise direction.

8. The machining method according to claim 7, characterized in that: The unchanged surface area includes a plane and a curved surface. The curved surface needs to satisfy that the curvature is less than a certain threshold and the curvature is the same in a bending direction.

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