Coating treatment method, device and system for special-shaped workpiece

Abstract

The invention relates to the technical field of machining, and particularly discloses a coating treatment method, device and system for a special-shaped workpiece, and the coating treatment method comprises the steps that the workpiece contour of the special-shaped workpiece is obtained; a machining track is determined according to the workpiece contour; on the basis of a preset proportion algorithm, according to the workpiece contour and the machining track, the target speed of coating treatment on the special-shaped workpiece is matched; and according to the target speed, glue is sprayed to the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece, and the workpiece surface subjected to glue spraying is covered with a metal coating, so that coating treatment of the special-shaped workpiece is achieved. Therefore, uniform distribution of the glue can be ensured through speed control in the glue spraying process, and a good foundation is provided for adhesion of a metal coating. The covering of the metal coating can also be tightly attached to the surface of the workpiece under accurate control, the problems of coating distortion, deformation and insufficient adhesive force which are easily caused by manual attaching and printing are solved, and therefore the surface coating effect of the special-shaped workpiece is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the field of mechanical processing technology, and in particular to a coating treatment method, device and system for special-shaped workpieces. Background Art

[0002] The processing of special-shaped workpieces is a key process and a difficult challenge. With the advancement of science and technology, new high-strength, high-hardness and high-value special-shaped workpieces are more widely used in aerospace, heat exchange equipment, medical equipment and other fields. In addition, the continuous improvement of processing depth, processing accuracy and processing efficiency requirements make the coating processing of special-shaped workpieces a key process and a difficult challenge in the processing of special-shaped workpieces. To achieve the coating processing of special-shaped workpieces, hot stamping or silver stamping can be performed on the surface of the special-shaped workpiece.

[0003] When hot stamping the surface of a special-shaped workpiece with gold or silver, it is impossible to use an automatic spraying device due to the complex structure of the special-shaped workpiece, and manual printing is usually used. However, the manual printing method easily causes the hot stamping or silver stamping on the surface of the special-shaped workpiece to be distorted or deformed, resulting in poor surface coating effect of the special-shaped workpiece. Summary of the invention

[0004] The present invention provides a coating treatment method, device and system for a special-shaped workpiece, aiming to improve the surface coating effect of the special-shaped workpiece.

[0005] In a first aspect, the present invention provides a coating treatment method for a special-shaped workpiece, comprising:

[0006] Obtaining the workpiece contour of special-shaped workpieces;

[0007] Determining a machining trajectory according to the workpiece profile;

[0008] Based on a preset proportional algorithm, matching a target speed for coating the special-shaped workpiece according to the workpiece contour and the processing trajectory;

[0009] According to the target speed, glue is sprayed on the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece, and the metal coating is covered on the workpiece surface after glue spraying to achieve coating treatment of the special-shaped workpiece.

[0010] In some embodiments, obtaining the workpiece contour of the special-shaped workpiece includes:

[0011] Performing visual scanning on the special-shaped workpiece to determine the workpiece contour of the special-shaped workpiece;

[0012] Alternatively, a drawing file of the special-shaped workpiece is obtained, and a workpiece contour of the special-shaped workpiece is determined according to the drawing file.

[0013] In some embodiments, determining a machining trajectory according to the workpiece profile includes:

[0014] Analyzing the special-shaped workpiece according to the feature information of the workpiece contour to determine a plurality of key contour points in the workpiece contour of the special-shaped workpiece;

[0015] According to the multiple key contour points, a corresponding processing trajectory is determined.

[0016] In some implementations, determining the corresponding processing trajectory according to the multiple key contour points includes:

[0017] Determine the distance and angle difference between every two key contour points;

[0018] According to the distance and angle difference between every two key contour points, the multiple key contour points are fitted to obtain corresponding processing trajectories.

[0019] In some embodiments, after the step of determining the corresponding processing trajectory according to the plurality of key contour points, the coating processing method for the special-shaped workpiece further includes:

[0020] According to the processing feature attribute information of the processing trajectory, the processing trajectory is divided to obtain multiple processing trajectory segments;

[0021] The method of spraying glue on the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece according to the target speed, and covering the workpiece surface after the spraying with a metal coating, comprises:

[0022] According to the target speed, the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece is sprayed with glue along the multiple processing trajectory segments in sequence, and the metal coating is covered to the workpiece surface corresponding to the multiple processing trajectory segments after spraying with glue to achieve coating processing of the special-shaped workpiece.

[0023] In some embodiments, after the step of determining the corresponding processing trajectory according to the plurality of key contour points, the coating processing method for the special-shaped workpiece further includes:

[0024] According to the processing feature attribute information of the processing trajectory, the processing trajectory is divided to obtain multiple processing trajectory segments;

[0025] The method of spraying glue on the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece according to the target speed, and covering the workpiece surface after the spraying with a metal coating, comprises:

[0026] According to the target speed, the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece is sprayed with glue along the multiple processing trajectory segments in sequence, and the metal coating is covered to the workpiece surface corresponding to the multiple processing trajectory segments after spraying with glue to achieve coating processing of the special-shaped workpiece.

[0027] In some embodiments, determining, based on the speed ratio, a target speed for coating a surface corresponding to the special-shaped workpiece according to a machining trajectory corresponding to the workpiece contour includes:

[0028] A calculation is performed based on the speed ratio and a known initial speed to determine a target speed for coating processing according to a processing trajectory corresponding to the current workpiece profile.

[0029] In some embodiments, spraying glue on the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece according to the target speed, and covering the workpiece surface after spraying with a metal coating, comprises:

[0030] According to the target speed, along a machining trajectory corresponding to the workpiece contour of the special-shaped workpiece, spraying glue on a surface corresponding to the workpiece contour of the special-shaped workpiece;

[0031] The metal coating is adhered to the workpiece surface on which the glue has been sprayed, so as to achieve coating treatment on the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece.

[0032] In a second aspect, the present invention further provides a coating treatment device for a special-shaped workpiece, the coating treatment device for the special-shaped workpiece comprising:

[0033] An acquisition unit, used for acquiring a workpiece contour of a special-shaped workpiece;

[0034] A determination unit, used for determining a processing trajectory according to the workpiece profile;

[0035] A calculation unit, configured to match a target speed for coating the special-shaped workpiece according to the workpiece profile and the processing trajectory based on a preset proportional algorithm;

[0036] The processing unit is used to spray glue on the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece according to the target speed, and cover the metal coating on the workpiece surface after spraying glue to achieve coating processing of the special-shaped workpiece.

[0037] In a third aspect, the present invention further provides a coating treatment system for a special-shaped workpiece, which includes a memory and a processor, wherein the memory stores a computer program, and the processor calls the computer program to implement the steps of the coating treatment method for a special-shaped workpiece disclosed in the present application.

[0038] In an embodiment of the present application, the workpiece contour of the special-shaped workpiece can be obtained; a processing trajectory can be determined based on the workpiece contour; based on a preset proportional algorithm, a target speed for coating the special-shaped workpiece is matched according to the workpiece contour and the processing trajectory; at the target speed, glue is sprayed on the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece, and a metal coating is covered on the workpiece surface after glue spraying to achieve coating of the special-shaped workpiece.

[0039] The beneficial effects of the present invention are as follows: first, by obtaining the workpiece contour of the special-shaped workpiece, the shape and structural characteristics of the workpiece can be accurately grasped. This provides accurate basic data for subsequent processing and avoids processing errors caused by insufficient understanding of the workpiece shape. By determining the processing trajectory according to the workpiece contour, the complex structure of the special-shaped workpiece can be fully considered and the most suitable processing path can be planned. Compared with the traditional manual printing method, this processing trajectory based on precise calculation can effectively avoid the special parts and structural difficulties of the special-shaped workpiece, ensuring the comprehensiveness and accuracy of the coating processing. Based on the preset proportional algorithm, the target speed is matched according to the workpiece contour and the processing trajectory, realizing the intelligent and adaptive adjustment of the processing process. Different workpiece contours and processing trajectories require different processing speeds to ensure the uniformity and quality of the coating. This automatic speed matching method can avoid problems such as uneven coating and inconsistent thickness caused by unstable speed in manual operation. Glue is sprayed on the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece according to the target speed, and the metal coating is covered on the workpiece surface after the glue spraying, realizing the automation and standardization of the coating processing. The speed control of the glue spraying process can ensure the uniform distribution of the glue and provide a good foundation for the adhesion of the metal coating. The metal coating can also fit closely to the workpiece surface under precise control, avoiding the problems of coating distortion, deformation and insufficient adhesion that are prone to occur in manual printing, thereby significantly improving the surface coating effect of special-shaped workpieces.

[0040] Therefore, the coating treatment method for special-shaped workpieces effectively solves the problem of poor coating effect caused by complex structure of special-shaped workpieces and manual printing, and improves the effect of coating treatment of special-shaped workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the structure of a printing system provided by one embodiment of the present invention;

[0042] Figure 2 A schematic flow chart of a coating treatment method for a special-shaped workpiece provided by an embodiment of the present invention;

[0043] Figure 3 Another schematic flow chart of a coating treatment method for a special-shaped workpiece provided in one embodiment of the present invention.

[0044] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0045] The scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be noted that the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0048] In order to enable those skilled in the art to better understand the solution of the present application, the application environment of the solution of the present application is first described. The coating treatment method of the special-shaped workpiece provided by the present application can be applied to Figure 1 The system architecture shown.

[0049] See also Figure 1 , Figure 1 1 is a schematic diagram of a system architecture of the printing system 100 provided in the embodiment of the present application. Figure 1 As shown, the printing system 100 may include a scanning detection device 101, an operation device 102, and a control processor 103. The control processor 103 may communicate with the scanning detection device 101 and the operation device 102 respectively.

[0050] The scanning and detecting device 101 can be used to scan and detect the special-shaped product to determine the workpiece contour of the special-shaped product. The scanning and detecting device 101 can be a scanning and detecting device placed inside the control processor 103 to directly determine the workpiece contour of the special-shaped product by visually scanning the special-shaped product. The scanning and detecting device 101 can also be a scanning and detecting device that exists independently of the control processor 103, generates CAD drawings, 3D model files and other drawing files, and sends a receipt document to the control processor 103 to determine the workpiece contour corresponding to the special-shaped product.

[0051] The operation device 102 may include a glue spraying device, a laminating device, a moving device, etc. The glue spraying device may be used to spray glue on the workpiece surface of the special-shaped product, the laminating device may be used to add a metal coating to the workpiece surface of the special-shaped product, and the moving device may be used to support the glue spraying device and the laminating device to perform corresponding coating processing steps.

[0052] The control processor 103 has powerful computing and data processing capabilities, and can coordinate various components to perform corresponding tasks. It can obtain the workpiece contour of the special-shaped workpiece; determine the processing trajectory according to the workpiece contour; match the target speed of coating the special-shaped workpiece according to the workpiece contour and the processing trajectory based on a preset proportional algorithm; spray glue on the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece according to the target speed, and cover the metal coating on the workpiece surface after spraying glue, so as to achieve the coating processing of the special-shaped workpiece and other steps.

[0053] The above-mentioned printing system 100 is an example of a printing system 100 involved in a coating treatment method for a special-shaped workpiece disclosed in the present application. It is intended to better explain the various steps of the coating treatment method for a special-shaped workpiece when describing the coating treatment method for a special-shaped workpiece of the present application, and does not limit the present application.

[0054] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0055] The invention provides a coating treatment method for a special-shaped workpiece.

[0056] See also Figure 2 , Figure 2 1 is a schematic flow chart of a coating treatment method for a special-shaped workpiece disclosed in an embodiment of the present application. The coating treatment method for a special-shaped workpiece can be applied to a printing system. Figure 2 As shown, the coating treatment method for the special-shaped workpiece may include the following steps.

[0057] Step 201: Obtain the workpiece contour of the special-shaped workpiece.

[0058] The workpiece contour can be the edge lines and feature description of the external shape of the special-shaped workpiece. The workpiece contour can be an accurate definition of the workpiece shape, including a combination of various geometric shapes such as curves, straight lines, corners, concave and convex surfaces. The workpiece contour can be used to accurately obtain the workpiece contour, fully understand the shape characteristics of the workpiece, and provide key basic information for subsequent processing and treatment.

[0059] The special-shaped workpiece may be a workpiece with an unconventional or non-standard shape. Different from common regular-shaped workpieces (such as round and square), the shape of the special-shaped workpiece may be more complex, unique and diverse, with curved surfaces, irregular curves, multiple faces at different angles or unique structural features.

[0060] It should be noted that the workpiece contour of a special-shaped workpiece can be obtained by using high-precision measuring instruments, such as 3D scanners, optical measuring equipment, etc., to capture the point cloud data or geometric features of the workpiece surface, and then construct a complete and accurate workpiece contour model through data processing and analysis. This process is an important prerequisite for subsequent processing, coating treatment and other operations of special-shaped workpieces. Only by obtaining a clear and accurate workpiece contour can a reasonable processing plan and operation process be formulated.

[0061] In some specific implementations, the workpiece contour of the irregular-shaped workpiece can be obtained by visually scanning the irregular-shaped workpiece to determine the workpiece contour of the irregular-shaped workpiece; or, by obtaining a drawing file of the irregular-shaped workpiece and determining the workpiece contour of the irregular-shaped workpiece according to the drawing file.

[0062] It should be noted that visual scanning of irregular workpieces to determine their contours is a common and advanced method. Visual scanning can use advanced technologies, such as high-resolution cameras and precision optical systems, to quickly and comprehensively capture irregular workpieces from multiple angles. The large amount of image data obtained from these shots will be transmitted to specialized image processing software. The software will perform complex calculations and analysis on these data to identify the point cloud data on the workpiece surface, that is, the three-dimensional coordinate information of numerous points on the workpiece surface. Through further processing and integration of the point cloud data, the shape and contour of the irregular workpiece can be accurately restored, including its complex curved surfaces, edges, corners and other details.

[0063] Another way is to determine the workpiece contour by obtaining the drawing files of the special-shaped workpiece. During the product design stage, there are usually detailed drawing files that contain information such as the precise size, shape and structure of the special-shaped workpiece. These drawings may exist in the form of two-dimensional engineering drawings or three-dimensional CAD models. By reading and parsing these drawings, the design parameters and contour features of the special-shaped workpiece can be directly obtained. Then, using relevant computer-aided design software or other analysis tools, these design information can be converted into workpiece contour data that can actually be used for processing and coating.

[0064] Step 202: Determine the machining trajectory according to the workpiece contour.

[0065] When processing a special-shaped workpiece, the specific operation path should be planned based on the unique shape and structural characteristics of the workpiece. The processing trajectory can be the movement path of the execution component that performs the coating process when processing the special-shaped workpiece. The processing trajectory can be determined based on the shape, size, surface characteristics and processing requirements of the special-shaped workpiece, and the processing trajectory can be synchronized with the workpiece contour of the special-shaped workpiece. The workpiece contour can include all the shape details of the special-shaped workpiece, such as the curvature of the curved surface, the angle of the corner, the convex and concave parts, etc.

[0066] It should be noted that determining the processing trajectory requires comprehensive consideration of multiple factors. First, it is necessary to ensure that the processing trajectory can completely cover the entire surface of the workpiece without missing any area that needs to be processed. For the complex shape of special-shaped workpieces, this requires precise calculation and planning to adapt to its unique contour changes. Secondly, the efficiency of processing must be considered. A reasonable processing trajectory should minimize the idle stroke and unnecessary movement of the tool, making the processing process smoother and faster, saving time and energy costs. At the same time, the accuracy and quality of processing must also be considered. In some cases where there are high requirements for surface flatness, coating uniformity, etc., the design of the processing trajectory must be able to ensure uniform and stable contact between the tool and the workpiece surface to avoid processing defects caused by improper trajectory.

[0067] In addition, the determination of the processing trajectory must also take into account the performance and limitations of the processing equipment used. Different equipment may have different ranges of motion, speeds, and precision capabilities, so the processing trajectory needs to be optimized based on the characteristics of the equipment.

[0068] For example, for a special-shaped workpiece with complex curved surfaces and sharp corners, if the machining trajectory is not designed properly, it may cause the coating to be too thick or too thin on the curved surface, and the coating to accumulate or be missing at the corners, thus affecting the appearance and performance of the workpiece. Therefore, it is necessary to determine the machining trajectory for machining special-shaped workpieces based on the contour of the workpiece.

[0069] Step 203 : Based on a preset proportional algorithm, a target speed for coating the special-shaped workpiece is matched according to the workpiece contour and the processing trajectory.

[0070] The target speed can be the movement speed of the tool or equipment set to achieve the best treatment effect when coating special-shaped workpieces. This speed is not fixed, but adjusted and matched according to different workpiece contours and processing trajectories.

[0071] The proportional algorithm can be calculated by establishing the proportional relationship between the features of the workpiece contour, the complexity of the machining trajectory and the speed. For example, the speed value corresponding to the workpiece contour and the machining trajectory can be calculated based on the curvature of the workpiece contour, the length of the machining trajectory and the direction change.

[0072] During the coating process, the distance between the tool and the surface of the irregular workpiece is not always the same. When the tool is close to certain protruding parts of the workpiece, in order to ensure the uniformity and quality of the coating, it is necessary to reduce the speed appropriately to avoid excessive thickness or uneven coating due to too close distance. On the contrary, when the tool is in an area on the workpiece surface that is relatively flat or far away, the speed can be appropriately increased to improve work efficiency.

[0073] It should be noted that the proportional algorithm can consider multiple factors to determine the target speed. First, the characteristics of the workpiece profile can be analyzed, such as the height of the protruding parts, the depth of the recessed parts, and the curvature of the curved parts. For parts with higher protrusions or deeper recesses, the proportional algorithm can calculate a lower speed ratio to ensure that the tool can slowly and accurately coat these locations.

[0074] At the same time, the machining trajectory is also an important consideration. If the machining trajectory follows the curved edge or complex structure of the workpiece, the algorithm will reduce the speed ratio according to the complexity of the trajectory, so that the tool can better adapt to the shape changes of the workpiece.

[0075] For example, when the tool moves along a curved workpiece contour with a large curvature, the distance between the tool and the workpiece surface is constantly changing, and the proportional algorithm adjusts the speed in real time according to this distance change. At the top of the arc, the distance is shorter, and the algorithm automatically reduces the speed, such as to 50% of the normal speed; while on both sides of the arc, the distance is relatively long, and the speed may be increased to 80% of the normal speed.

[0076] Therefore, through this technical solution of matching the target speed based on a preset ratio algorithm, the processing speed can be flexibly adjusted according to the specific conditions of the workpiece contour of the special-shaped workpiece, thereby maximizing the production efficiency while ensuring the coating processing quality.

[0077] Step 204 , spraying glue on the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece according to the target speed, and covering the metal coating on the workpiece surface after spraying glue, so as to achieve coating treatment of the special-shaped workpiece.

[0078] The metal coating can be a layer of metal material covering the surface of the special-shaped workpiece. This layer of metal usually has specific properties and functions, such as enhancing the wear resistance, corrosion resistance, electrical conductivity or thermal conductivity of the workpiece. The material of the metal coating can be a variety of metals or their alloys, such as one or more of gold, silver, zinc, chromium, and nickel. Its thickness and microstructure will be adjusted according to specific application requirements and process conditions. The quality and performance of the metal coating directly affect the reliability and life of the special-shaped workpiece during use.

[0079] Glue spraying can be the process of spraying adhesive evenly on the surface of a special-shaped workpiece. The adhesive used usually has good bonding properties and can form a sticky base on the surface of the workpiece. The purpose of glue spraying is to enhance the adhesion between the metal coating and the workpiece surface, ensuring that the metal coating can be firmly attached to the workpiece and is not easy to fall off. The selection of adhesive will take into account its compatibility with the workpiece material, the metal coating material, and its stability under different environmental conditions.

[0080] In the specific operation steps, due to the irregular surface shape of the special-shaped workpiece, the glue spraying process needs to accurately control the movement of the nozzle according to the changes in the workpiece contour. Moving the nozzle at a constant speed at the target speed can make the glue spray evenly on the workpiece surface. For areas with complex contours, such as curved, uneven parts, glue is sprayed on the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece according to the target speed. This requires ensuring that the glue can evenly and comprehensively cover the workpiece surface, especially in the complex contours and subtle parts of the special-shaped workpiece, to provide a unified and stable bonding foundation, which can ensure that the glue coverage is neither too much nor too little, thereby providing a good foundation for the subsequent metal coating adhesion.

[0081] In the process of applying the metal coating to the workpiece surface after spraying, the metal coating is applied to the workpiece surface after spraying in a specific way. To ensure that the coating is fully combined with the glue, it is necessary to maintain the stability of the operation and the consistency of the speed, so that the metal coating can fully contact and combine with the adhesive, thereby forming a uniform, continuous and uniformly thick covering layer on the entire workpiece surface. The control of the target speed helps to avoid the accumulation of the coating in some parts or thinning in other parts, thereby ensuring the overall quality and performance of the coating.

[0082] Therefore, coating treatment of special-shaped workpieces (including spraying glue first and then applying metal coating) strictly follows the optimal movement speed determined by previous calculations and planning. This speed is set after comprehensively considering the characteristics of the workpiece, processing requirements and process conditions, etc., to ensure that the quality and efficiency of coating treatment are optimally balanced.

[0083] exist Figure 2 In the described method embodiment, the workpiece contour of the special-shaped workpiece can be obtained; the processing trajectory is determined according to the workpiece contour; based on the preset proportional algorithm, the target speed of coating the special-shaped workpiece is matched according to the workpiece contour and the processing trajectory; according to the target speed, the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece is sprayed with glue, and the metal coating is covered on the workpiece surface after spraying with glue, so as to achieve the coating treatment of the special-shaped workpiece. In this way, the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece is sprayed with glue according to the target speed, and the metal coating is covered on the workpiece surface after spraying with glue, so as to achieve the automation and standardization of the coating treatment. The speed control of the glue spraying process can ensure the uniform distribution of glue and provide a good foundation for the adhesion of the metal coating. The coverage of the metal coating can also fit the workpiece surface tightly under precise control, avoiding the problems of coating distortion, deformation and insufficient adhesion that are easy to occur in manual printing, thereby significantly improving the surface coating effect of the special-shaped workpiece.

[0084] See also Figure 3 , Figure 3 FIG. 1 is a flow chart of another coating treatment method for a special-shaped workpiece disclosed in an embodiment of the present application. The coating treatment method for a special-shaped workpiece can be applied to a chip testing system. Figure 3 As shown, the coating treatment method for the special-shaped workpiece may include the following steps.

[0085] Step 301: Visually scan the special-shaped workpiece to determine the workpiece contour of the special-shaped workpiece.

[0086] Or, a drawing file of the special-shaped workpiece is obtained, and a workpiece contour of the special-shaped workpiece is determined according to the drawing file.

[0087] The specific content of step 301 can refer to the explanation of step 201 and will not be repeated here.

[0088] It should be noted that there are two main ways to obtain the workpiece contour of special-shaped workpieces.

[0089] First, through visual scanning, high-resolution cameras and optical systems are used to shoot from multiple angles to obtain image data, and the point cloud data is processed and analyzed by software to restore the shape outline including complex details.

[0090] Second, obtain the drawing files in the product design stage, which can be two-dimensional engineering drawings or three-dimensional CAD models, and convert them into contour data that can be used for processing and coating after reading and parsing.

[0091] Step 302: Analyze the special-shaped workpiece according to the feature information of the workpiece contour to determine a plurality of key contour points in the workpiece contour of the special-shaped workpiece.

[0092] The multiple key contour points may be multiple contour coordinate points corresponding to the feature information of the workpiece contour, and the multiple key contour points may be multiple coordinate points determined according to the feature information of the workpiece contour.

[0093] The feature information of the workpiece contour may include the curvature of the workpiece contour, the shape of the workpiece contour, the direction of the curve, the angle of the corner, the position of the concave and convex surface, etc. The feature information of the workpiece contour can be used to determine multiple key contour points in the workpiece contour of the special-shaped workpiece.

[0094] In the process of processing special-shaped workpieces, the curvature of the workpiece contour can reflect the degree of curvature and the trend of change of the curve part. By analyzing the curvature, those special positions with larger or smaller curvatures can be identified as key contour points. The shape of the workpiece contour, whether it is a complex curved shape, a combination of regular geometric shapes, or a unique irregular shape, provides important clues for finding key contour points. For example, for areas with special shapes, their vertices, the midpoints of the edges, etc. may become key contour points. The direction of the curve can reveal the overall trend and direction of change of the workpiece contour. Along the direction of the curve, those positions where there is a significant change in direction are often key points and can be identified as key contour points. The angle of the corner directly affects the shape and structural characteristics of the workpiece. Sharp corners or corner points with larger angles are usually important and should be regarded as key contour points. The position of the concave and convex surface determines the undulation of the workpiece surface. The vertices, edges, and intersections of the concave and convex surface with the plane may be key positions that affect the performance and processing of the workpiece, and are thus identified as key contour points.

[0095] Taking these characteristic information into consideration, a comprehensive and in-depth analysis of the special-shaped workpiece is carried out. Through careful observation, measurement and calculation, multiple coordinate points with representativeness and importance are selected from numerous contour points as key contour points.

[0096] The determination of these key contour points is not random, but based on the accurate understanding and grasp of the contour features of the workpiece. They can accurately outline the unique shape and structure of special-shaped workpieces, providing accurate and key reference for subsequent processing, testing, design improvement and other work.

[0097] For example, in CNC machining, more efficient and accurate tool paths can be planned based on these key contour points; in quality inspection, these key contour points can be focused on to ensure that the workpiece meets the design requirements and quality standards.

[0098] In short, determining multiple key contour points based on the rich and diverse feature information of the workpiece contour is an important link in the effective processing and accurate description of special-shaped workpieces, and is of great significance for improving the production quality and efficiency of workpieces.

[0099] Step 303: Determine the corresponding processing trajectory according to the multiple key contour points.

[0100] The multiple key contour points provide key information of the shape of the special-shaped workpiece, which are representative and important positions in the workpiece contour. Through these multiple key contour points, the processing positions corresponding to the key contour points where the coating process is performed can be determined.

[0101] After determining the processing position corresponding to each key contour point among the plurality of key contour points, the corresponding processing trajectory may be determined based on the processing position corresponding to each key contour point.

[0102] In some specific implementations, determining the corresponding processing trajectory according to the multiple key contour points may include the following steps:

[0103] (1) Determine the distance and angle difference between every two key contour points.

[0104] In actual operation, we operate according to coordinate groups such as (x1, z1, c1), (x2, z2, c2), (x3, z3, c3), (x4, z4, c4)... Due to the complexity and irregularity of the workpiece contour, the distance and angle difference between every two key contour points need to be accurately determined.

[0105] For distance calculation, use the formula S1 = SQRT ((X2-X1)^2 + (Z2-Z1)^2). This formula is based on the Pythagorean theorem and can accurately calculate the straight-line distance between two points in a plane rectangular coordinate system. For example, assuming that the key contour point (X1, Z1) is (5, 3) and (X2, Z2) is (9, 7), the distance S1 between them is SQRT ((9-5)^2 + (7-3)^2) = 5.

[0106] (2) According to the distance and angle difference between every two key contour points, multiple key contour points are fitted to obtain the corresponding processing trajectory.

[0107] After obtaining detailed information about the distance and angle difference between each two key contour points, fitting operations can be performed. When fitting, the changing rules of these distances and angle differences can be fully considered. If the distance between adjacent key contour points is short and the angle difference is small, straight line segments may be used to approximate the connection to simplify the processing trajectory and improve efficiency. However, if the distance is long or the angle difference is large, simple straight line connection is no longer applicable. At this time, curve fitting, such as spline curves or Bezier curves, is required.

[0108] For example, when the shape formed by multiple key contour points is similar to a smooth arc, curve fitting can more accurately describe this contour and avoid the discontinuity and error caused by straight line connection. Moreover, the fitting process must also take into account the speed problem mentioned above. Since the speed may be uneven in actual operation, resulting in stretching and deformation of the printed image, the trajectory should be adjusted according to the speed ratio V1:v1=S1:s1 during fitting. The speed of each point is calculated and adjusted by the formula v1=V1*SQRT((x2-x1)^2+(z2-z1)^2+(c2-c1)^2) / SQRT((X2-X1)^2+(Z2-Z1)^2) to ensure that the speed remains as constant as possible throughout the entire processing process, thereby improving the processing quality and accuracy.

[0109] Step 304 : Divide the processing trajectory according to the processing feature attribute information of the processing trajectory to obtain multiple processing trajectory segments.

[0110] The processing feature attribute information of the processing trajectory may be a description of various characteristics and features related to the processing trajectory. The processing feature attribute information may include processing technology requirements, changes in workpiece materials, complexity of contour shapes, and differences in precision requirements.

[0111] It should be noted that the entire continuous processing trajectory is divided into a plurality of independent parts according to the above processing feature attribute information, so as to decompose the original single processing trajectory into a plurality of trajectory segments with different characteristics.

[0112] For example, for a machining trajectory of a special-shaped workpiece, due to the different precision requirements of different areas on its surface, the trajectory corresponding to the area with high precision requirements may be divided into one section, and the trajectory corresponding to the area with low precision requirements may be divided into another section. Alternatively, according to the hardness of the workpiece material, the machining trajectory corresponding to the material with higher hardness may be divided separately so that different machining parameters can be used.

[0113] Through such division, specific processing strategies and parameters can be formulated for each processing trajectory segment in a more targeted manner, thereby improving processing efficiency and quality and meeting different processing requirements.

[0114] Step 305: Calculate the distance of any contour segment among the multiple contour segments to obtain a first distance.

[0115] In the case where there are multiple segmented contour segments, any contour segment can be selected from the multiple contour segments to calculate the distance.

[0116] It should be noted that the distance of any contour segment can be calculated by calculating the straight-line distance between the starting point and the end point, or the vertical distance from a point on the contour segment to a specific reference point, reference line or reference surface, or the distance from the centroid of this contour segment to a fixed position, etc. Specifically, the method of calculating the distance will vary depending on the type of distance defined. If the length of the contour segment is to be calculated, the distance formula or integration method in mathematics may be used to obtain it. For example, if this contour segment can be approximately regarded as a straight line segment, then the distance formula between two points can be used to calculate it; if it is a curve segment, it may be necessary to integrate the curve equation to obtain it.

[0117] Step 306 , calculating the distance of any processing trajectory segment among the multiple processing trajectory segments to obtain a second distance.

[0118] Among multiple segmented processing trajectory segments, a segment can be randomly selected for distance measurement. The method of calculating the distance of the selected processing trajectory segment depends on the specific type of "distance" referred to. To calculate the actual length of the trajectory segment, if it is a straight line, a simple distance formula can be used. If it is a curve, it may be necessary to use methods such as integral operations in mathematics. For example, if the selected processing trajectory segment is a parameterizable curve, the length can be obtained by integrating its parameter equation to obtain the second distance.

[0119] Step 307: Determine a speed ratio between the workpiece contour and the machining trajectory according to the first distance and the second distance.

[0120] Among them, the first distance and the second distance are specific distance values ​​calculated from the workpiece contour and the processing trajectory, respectively. The first distance calculated on the workpiece contour reflects the size or position relationship of the workpiece in a certain aspect. The second distance calculated in the processing trajectory is related to the path length or position characteristics during the processing. By comparing these two distances, we can understand the relative relationship between the workpiece contour and the processing trajectory in spatial scale.

[0121] The speed ratio can be used to represent the comparison of the spatial scale from the workpiece contour to the machining trajectory.

[0122] If the first distance is larger and the second distance is smaller, it may mean that in the same time, the change of the workpiece contour is relatively large, while the movement of the processing trajectory is relatively small, resulting in a small speed ratio, and the processing speed needs to be adjusted to better match the change of the workpiece contour. Conversely, if the first distance is smaller and the second distance is larger, the speed ratio may be larger, and the corresponding speed adjustment is also required.

[0123] For example, suppose the first distance represents the actual length between two key feature points on the workpiece contour is 10 cm, and the second distance represents the length between two corresponding points on the corresponding machining trajectory is 5 cm. Then the speed ratio may be determined as 2:1, which means that the workpiece contour changes twice as fast as the machining trajectory moves, and the machining speed may need to be reduced to better match the workpiece contour.

[0124] In summary, according to the numerical relationship between the first distance and the second distance, the speed proportional relationship between the workpiece contour and the machining trajectory can be quantitatively determined, providing a basis for optimizing speed control during the machining process.

[0125] Step 308: Determine, based on the speed ratio, a target speed for coating the surface corresponding to the special-shaped workpiece according to the machining trajectory corresponding to the workpiece contour.

[0126] The speed ratio reflects the relative speed relationship between the change of workpiece contour and the movement of machining trajectory.

[0127] When coating the surface of a special-shaped workpiece, it is necessary to determine the appropriate target speed based on this speed ratio. If the speed ratio is too large, it means that the moving speed of the processing trajectory is slower than the changing speed of the workpiece contour. In order to more accurately perform coating according to the workpiece contour, it may be necessary to increase the moving speed of the processing trajectory so that it better matches the characteristics of the workpiece contour and achieves a better coating effect. On the contrary, if the speed ratio is too small, it means that the moving speed of the processing trajectory is too fast and exceeds the changing speed of the workpiece contour. At this time, it is necessary to reduce the moving speed of the processing trajectory to ensure that the coating can be evenly and accurately covered on the surface of the special-shaped workpiece to avoid problems such as too thick or too thin, uneven coating, etc.

[0128] For example, if the speed ratio is 2:1, that is, the change speed of the workpiece contour is twice the speed of the machining trajectory, then the machining trajectory may need to be moved at twice the speed to achieve a good match with the workpiece contour, thereby determining a suitable target speed.

[0129] By adjusting and determining according to the speed ratio in this way, it can be ensured that the coating process can closely fit the contour features of the special-shaped workpiece, thereby improving the quality and accuracy of the coating process.

[0130] 309. According to the target speed, glue is sprayed on the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece along the multiple processing trajectory segments in sequence, and the metal coating is covered on the workpiece surface corresponding to the multiple processing trajectory segments after glue spraying, so as to realize coating processing of the special-shaped workpiece.

[0131] After determining the target speed, each section of the machining trajectory can be processed one by one in a pre-planned order. Due to the irregular shape of special-shaped workpieces, it is necessary to divide the machining trajectory into multiple sections for coating treatment separately.

[0132] During the coating process, the adhesive can be evenly sprayed on the surface corresponding to the contour of the workpiece under target speed control. Because the workpiece is shaped, the position and amount of glue spraying need to be precisely controlled according to the characteristics of different track segments and workpiece surfaces to ensure that the glue can fully and evenly cover the area to be coated. After the glue spraying is completed, the metal coating material is applied to the surface of the workpiece that has been sprayed with glue at the same precise speed control. This allows the metal coating to fully combine with the adhesive and firmly adhere to the surface of the workpiece, forming a uniform, continuous and good performance coating.

[0133] In this way, by processing the glue spraying and metal coating covering operations of multiple processing trajectory segments in sequence according to the target speed, the special-shaped workpiece can be coated comprehensively and meticulously so that it can obtain the required protection, decoration or other functional characteristics and meet the requirements of practical applications.

[0134] For example, for a complex-shaped special-shaped mechanical part, the glue is first sprayed along the first processing trajectory at the target speed, and then covered with a metal coating; then the second and third sections are processed in the same way... until the coating of the entire workpiece is completed, thereby providing the part with a wear-resistant and corrosion-resistant protective coating.

[0135] exist Figure 3In the described method embodiment, the workpiece contour of the special-shaped workpiece can be obtained; the processing trajectory is determined according to the workpiece contour; based on the preset proportional algorithm, the target speed of coating the special-shaped workpiece is matched according to the workpiece contour and the processing trajectory; according to the target speed, the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece is sprayed with glue, and the metal coating is covered on the workpiece surface after spraying with glue, so as to achieve the coating treatment of the special-shaped workpiece. In this way, the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece is sprayed with glue according to the target speed, and the metal coating is covered on the workpiece surface after spraying with glue, so as to achieve the automation and standardization of the coating treatment. The speed control of the glue spraying process can ensure the uniform distribution of glue and provide a good foundation for the adhesion of the metal coating. The coverage of the metal coating can also fit the workpiece surface tightly under precise control, avoiding the problems of coating distortion, deformation and insufficient adhesion that are easy to occur in manual printing, thereby significantly improving the surface coating effect of the special-shaped workpiece.

[0136] It should be understood that the same or corresponding information in the above different embodiments can be referenced to each other.

[0137] It should be understood that although Figure 2 , Figure 3 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 2 and Figure 3 At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0138] The above is only a specific implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A coating treatment method for a special-shaped workpiece, characterized in that: include: Obtaining the workpiece contour of special-shaped workpieces; Determining a machining trajectory according to the workpiece profile; Based on a preset proportional algorithm, matching a target speed for coating the special-shaped workpiece according to the workpiece contour and the processing trajectory; According to the target speed, glue is sprayed on the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece, and the metal coating is covered on the workpiece surface after glue spraying to achieve coating treatment of the special-shaped workpiece.

2. The coating treatment method for a special-shaped workpiece according to claim 1, characterized in that: The step of obtaining the workpiece contour of the special-shaped workpiece comprises: Performing visual scanning on the special-shaped workpiece to determine the workpiece contour of the special-shaped workpiece; Alternatively, a drawing file of the special-shaped workpiece is obtained, and a workpiece contour of the special-shaped workpiece is determined according to the drawing file.

3. The coating treatment method for a special-shaped workpiece according to claim 1, characterized in that: Determining a machining trajectory according to the workpiece contour includes: Analyzing the special-shaped workpiece according to the feature information of the workpiece contour to determine a plurality of key contour points in the workpiece contour of the special-shaped workpiece; According to the multiple key contour points, a corresponding processing trajectory is determined.

4. The coating treatment method for a special-shaped workpiece according to claim 3, characterized in that: Determining the corresponding processing trajectory according to the plurality of key contour points includes: Determine the distance and angle difference between every two key contour points; According to the distance and angle difference between every two key contour points, the multiple key contour points are fitted to obtain corresponding processing trajectories.

5. The coating treatment method for a special-shaped workpiece according to claim 3 or 4, characterized in that: After the step of determining the corresponding processing trajectory according to the plurality of key contour points, the coating processing method for the special-shaped workpiece further includes: According to the processing feature attribute information of the processing trajectory, the processing trajectory is divided to obtain multiple processing trajectory segments; The method of spraying glue on the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece according to the target speed, and covering the workpiece surface after the spraying with a metal coating, comprises: According to the target speed, the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece is sprayed with glue along the multiple processing trajectory segments in sequence, and the metal coating is covered to the workpiece surface corresponding to the multiple processing trajectory segments after spraying with glue to achieve coating processing of the special-shaped workpiece.

6. The coating treatment method for a special-shaped workpiece according to claim 1, characterized in that: The workpiece contour is synchronized with the machining trajectory, the workpiece contour includes multiple contour segments, and the machining trajectory includes multiple machining trajectory segments; The method of matching the target speed of coating the special-shaped workpiece according to the workpiece contour and the processing trajectory based on a preset proportional algorithm includes: Calculate the distance of any contour segment among the multiple contour segments to obtain a first distance; Calculate the distance of any processing trajectory segment among the multiple processing trajectory segments to obtain a second distance; determining a speed ratio between the workpiece contour and the machining trajectory according to the first distance and the second distance; According to the speed ratio, a target speed for coating the surface corresponding to the special-shaped workpiece according to the machining trajectory corresponding to the workpiece contour is determined.

7. The coating treatment method for a special-shaped workpiece according to claim 6, characterized in that: Determining, based on the speed ratio, a target speed for coating the surface corresponding to the special-shaped workpiece according to the machining trajectory corresponding to the workpiece contour comprises: A calculation is performed based on the speed ratio and a known initial speed to determine a target speed for coating processing according to a processing trajectory corresponding to the current workpiece profile.

8. The coating treatment method for a special-shaped workpiece according to claim 1, characterized in that: The method of spraying glue on the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece according to the target speed, and covering the workpiece surface after the spraying with a metal coating, comprises: According to the target speed, along a machining trajectory corresponding to the workpiece contour of the special-shaped workpiece, spraying glue on a surface corresponding to the workpiece contour of the special-shaped workpiece; The metal coating is adhered to the workpiece surface on which the glue has been sprayed, so as to achieve coating treatment on the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece.

9. A coating treatment device for a special-shaped workpiece, characterized in that: include: An acquisition unit, used for acquiring a workpiece contour of a special-shaped workpiece; A determination unit, used for determining a processing trajectory according to the workpiece profile; A calculation unit, configured to match a target speed for coating the special-shaped workpiece according to the workpiece profile and the processing trajectory based on a preset proportional algorithm; The processing unit is used to spray glue on the workpiece surface corresponding to the workpiece contour of the special-shaped workpiece according to the target speed, and cover the metal coating on the workpiece surface after spraying glue to achieve coating processing of the special-shaped workpiece.

10. A coating treatment system for a special-shaped workpiece, characterized in that: The coating processing system for the special-shaped workpiece includes a memory and a processor, the memory stores a computer program, and the processor calls the computer program to implement the steps of the coating processing method for the special-shaped workpiece according to any one of claims 1 to 8.

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