Method for solving small-gap cut damaged piece

Abstract

The invention discloses a method for solving small-gap cut damaged pieces. The method comprises the following steps: S1, preprocessing a cut layout: identifying and splitting adjacent lines; s2, key feature extraction: reading and cutting layout data, and automatically identifying and extracting key geometric features in the layout; s3, path splitting and optimizing, wherein the distance between the corner and the adjacent cutting piece and the distance between the shearing opening and the adjacent cutting piece are judged, and lines at the corner and the shearing opening are split according to the set distance; and S4, multi-cutter collaborative cutting execution, wherein different cutters are dynamically switched based on the double-path attribute, and multi-cutter collaborative operation is achieved. An active control system is formed through feature extraction, double-path setting and multi-cutter cooperative execution of the cutting layout, and corners, cutting mouths and the distance between adjacent cutting pieces in the cutting layout are identified, so that the risk that the pieces are possibly damaged in the cutting process can be automatically identified; and adaptive cutters are matched for different cutting stages through multi-path cutting planning, so that the overall efficiency and the cutting fineness of the cutting operation are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of cutting technology, and in particular to a method for solving the problem of damaged pieces during small-gap cutting. Background Technology

[0002] In the digital cutting process of clothing, home textiles, and composite material processing, single-layer cutting tables are widely used for cutting small batches, multiple varieties, and high-precision fabrics due to their high flexibility and adaptability. To meet the needs of different fabric characteristics and cutting complexity, single-layer cutting tables are usually equipped with various types of physical cutting blades, among which the most common include circular blades, pneumatic blades, and vibrating blades.

[0003] Among them, circular knives, with their high-speed rotating cutting method, exhibit high efficiency in the cutting process. However, due to their large blade head and blade holder size, they are prone to "overcutting" in complex paths or small gaps, leading to fabric damage, edge burrs, or even scrapped pieces. In contrast, pneumatic knives cut through vertical reciprocating impact, while vibrating knives rely on high-frequency micro-vibration for cutting; both offer superior cutting accuracy. However, the cutting speed of these types of knives is significantly lower than that of circular knives, which, while ensuring accuracy, greatly reduces production efficiency.

[0004] Currently, common single-layer cutting operations still rely on manual intervention, or involve simple partitioning and manual tool assignment during the programming stage. This method is highly dependent on the operator's experience, is cumbersome, has low automation, and struggles to achieve an optimal balance between efficiency and precision. Therefore, to effectively coordinate cutting efficiency and precision, a method for solving the problem of damaged pieces during small-gap cutting has been invented. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method for solving the problem of damaged pieces during small-gap cutting.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] 1. A method for solving the problem of damaged pieces during small-gap cutting, characterized by comprising the following steps:

[0008] S1. Preprocessing of the cutout layout: Identification and separation of adjacent lines;

[0009] S2. Key Feature Extraction: Read the cropped layout data and automatically identify and extract the key geometric features in the layout;

[0010] S3. Path splitting and optimization: Determine the distance between corners, cuts and adjacent pieces, split the lines at corners and cuts according to the set distance, and realize multi-path cutting planning based on multiple attribute parameters;

[0011] S4. Multi-tool collaborative cutting execution: Set the corresponding cutting parameters according to the cutting attributes, and dynamically switch different cutting tools based on the dual-path attributes to realize multi-tool collaborative operation.

[0012] Preferably, in step S2, the key geometric features include corners, cuts, and small gap areas formed between adjacent cut pieces.

[0013] Preferably, in step S3, a dynamic safety distance threshold is set. When the shortest distance between a corner, a cut, and an adjacent piece is less than the threshold, the system automatically splits the cutting path into two paths.

[0014] Preferably, the dual paths include a basic trimming path and a fine auxiliary path. The basic trimming path mainly consists of long straight lines and areas with high curvature, while the fine auxiliary path mainly consists of sensitive areas such as small gaps, corners, or cuts.

[0015] Preferably, the basic cutting path uses a circular blade, and the fine auxiliary path uses one or more of a vibrating blade, a pneumatic blade, and a cutting tool.

[0016] Preferably, in step S3, the multi-attribute parameters include at least the material of the cut piece, thickness, cutting accuracy level, tool wear condition, and minimum safety gap threshold.

[0017] Preferably, a laser displacement sensor is introduced during the cutting process for online monitoring.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] An active control system is formed by extracting features from the cutting pattern, setting dual paths, and coordinating the execution of multiple tools. This system identifies corners, cuts, and distances between adjacent pieces in the cutting pattern and decomposes and optimizes the lines, thereby automatically identifying the risk of damaged pieces during the cutting process. Through multi-path cutting planning, suitable tools are matched for different cutting stages, and various cutting tools are driven to perform their work in their respective cutting scenarios, thus giving full play to the performance advantages of the tools and significantly improving the overall efficiency and precision of the cutting operation. Attached Figure Description

[0020] Figure 1 This is a process flow diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the cutting path of the present invention. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments. It should be understood that the following embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0023] Example: A method for solving the problem of damaged pieces during small-gap cutting

[0024] This embodiment provides a method for solving the problem of damaged pieces during small-gap cutting, which is particularly suitable for high-efficiency and high-precision cutting operations. This method significantly improves cutting efficiency and accuracy by identifying geometric features of the cutting pattern, optimizing the cutting path, and achieving multi-tool collaborative control. Specifically, it includes the following steps:

[0025] S1: Preprocessing of the cropped layout: Identification and separation of adjacent lines

[0026] First, import the digital layout file to be cropped. Then, use an edge detection algorithm to identify the lines that need to be cropped, and use a clustering method based on Euclidean distance and angle deviation to merge and split adjacent line segments.

[0027] S2: Key Feature Extraction: Read the cropped layout data, automatically identify and extract key geometric features from the layout.

[0028] The system reads the pre-processed cutting pattern data and uses a geometric feature recognition algorithm to automatically extract key feature points from the pattern, including corners, grooves, cuts, curvature change points, and small gap areas formed between adjacent pieces.

[0029] S3. Path Splitting and Optimization: Determine the distance between corners, cuts, and adjacent pieces; split the lines at corners and cuts according to the set distances; and implement multi-path cutting planning based on multiple attribute parameters.

[0030] The system determines the distance between corners, cuts, and adjacent pieces based on a preset minimum safety clearance threshold. If the radius of curvature of a line at a corner is less than the threshold, or the distance between the edges of two adjacent pieces is less than the threshold, a splitting point is automatically inserted at that location, dividing the piece into multiple continuous sub-paths. Each sub-path is smoothed and optimized, and an optimal tool type and cutting sequence are assigned to each path, thereby eliminating sharp turns and reducing the risk of tool vibration and material tearing.

[0031] Meanwhile, the system reads multiple attribute parameters of each line, including material type, thickness, and cutting direction, and divides the cutting path into basic cutting path and fine auxiliary path. The basic cutting path is mainly responsible for cutting long straight lines and large curvature sections, while the fine auxiliary path is mainly responsible for cutting sensitive areas such as small gaps, corners, or cuts.

[0032] S4. Multi-tool collaborative cutting execution: Set corresponding cutting parameters according to cutting attributes, and dynamically switch different cutting tools based on dual-path attributes to achieve multi-tool collaborative operation.

[0033] Based on the path attributes planned in step S3, the system matches corresponding tools and process parameters for different paths: When executing the basic cutting path, the system automatically selects a circular cutter for high-speed cutting, with parameters set to a running speed of 1.2 m / s and a pressing pressure of 0.2 MPa; when executing the fine auxiliary path, the system dynamically switches to a special tool—including one or more combinations of vibrating cutters, pneumatic cutters, or shearing tools—according to the preset tool library, to cut sensitive areas such as small gaps, corners, or shearing edges. In this mode, the parameters are adjusted to a speed of 0.3 m / s and a pressure of 0.6 MPa. After cutting, the roughness of the cut edge and the condition of the damaged piece are monitored online using a laser displacement sensor.

[0034] Comparative example:

[0035] This comparative example provides a traditional pattern cutting method, a method to solve the problem of damaged pieces when cutting small gaps. The entire cutting process uses a single cutting blade to complete all cutting actions. It requires manual marking of key geometric features on the pattern, and uses a uniform continuous path for cutting special positions such as corners and cut edges. A single cutting blade cannot adapt to the cutting needs of different geometric features, which easily leads to problems such as low cutting efficiency and unstable quality of finished pieces.

[0036] like Figures 1-2 As shown, compared with the comparative example, this embodiment can accurately identify small gap areas through dual-path collaborative planning in step S3, and set dual paths based on multiple attribute parameters such as material thickness and cutting tension, thereby avoiding the cutting damage caused by path overlap in small gap areas in the single path of the comparative example; in addition, this embodiment only needs to set parameters in the early stage, while the comparative example requires manual marking of key features, which makes the cutting process time-consuming and labor-intensive, and greatly reduces the cutting efficiency.

[0037] like Figure 2 As shown, by comparing proportions, potential damage points may occur at points A (complex cuts), B (adjacent lines with small gaps), C (acute corners), and D (intersections of long straight lines). The mechanical stress concentration generated by a single cutter after continuous cutting and the overshoot of the cutter's inertia can directly lead to burrs, tears, or accidental cutting of adjacent pieces. This embodiment effectively disperses the cutting stress by setting a distance to divide the locations of vulnerable pieces such as corners, cuts, and small gaps into segmented cutting paths, thereby avoiding the problems of edge damage or scratches on adjacent pieces.

[0038] In this embodiment, step S4 dynamically switches the cutting blade based on dual-path attributes. This allows for the selection of specialized cutting blades with finer cutting edges and more controllable cutting force for slits, corners, and small gap areas. These blades include one or more types of vibrating blades, pneumatic blades, or slit tools. Specifically:

[0039] Point A (complex cut): Formed in one step using a cutting tool.

[0040] Cutting is done using a cutting tool, and a die is customized according to the shape of the cut. A smooth-edged cut is formed by stamping in one go.

[0041] Point B (adjacent line with small gap): Vertical punching is performed using a pneumatic knife.

[0042] The pneumatic knife operates on the principle of vertical downward punching. The knife moves along the Z-axis and is immediately lifted after cutting. This working method of dropping, punching, and lifting the knife avoids the risk of damaging the blade in small gap areas.

[0043] Point C (acute corner): Cut using a vibratory cutter.

[0044] The vibrating knife achieves point-pecking cutting through its high-frequency vibration, which can effectively overcome the inertia of the tool and switch directions at the sharp angle inflection point, thereby cutting out sharp corners with clear contours.

[0045] Point D (intersection of long curve and straight line): Automatic switching and coordinated operation using circular cutter and vibratory cutter.

[0046] The cutting process uses a combination of circular and vibrating blades. Circular blades are used for long straight sections, while the process automatically switches to vibrating blades when reaching curved sections or transitional areas, thus ensuring the smoothness of the curves.

[0047] When using a round blade for cutting regular areas, the proportion of a single blade cannot balance the precision and efficiency of the cutting. If a round blade is used to handle small gap areas, it is easy to damage the blade. If a special blade is used to handle regular areas, the overall cutting efficiency will be extremely low. Furthermore, the wear of the blade after long-term use of a single blade will further increase the risk of damaging the blade.

[0048] In summary, this embodiment forms an active control system through feature extraction, dual-path setting, and multi-tool collaborative execution. It identifies the risks in cutting small gap areas, plans avoidance paths, and matches suitable tools, thereby solving the problem of damaged pieces in small gap areas. At the same time, it takes into account both cutting precision and efficiency, meeting the technical requirements of modern precision cutting, and has higher practical value and promotion significance.

[0049] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the invention.

Claims

1. A method for solving the problem of damaged pieces during small-gap cutting, characterized in that, Includes the following steps: S1. Preprocessing of the cutout layout: Identification and separation of adjacent lines; S2. Key Feature Extraction: Read the cropped layout data and automatically identify and extract the key geometric features in the layout; S3. Path splitting and optimization: Determine the distance between corners, cuts and adjacent pieces, split the lines at corners and cuts according to the set distance, and realize multi-path cutting planning based on multiple attribute parameters; S4. Multi-tool collaborative cutting execution: Set the corresponding cutting parameters according to the cutting attributes, and dynamically switch different cutting tools based on the dual-path attributes to realize multi-tool collaborative operation.

2. The method for solving the problem of damaged pieces during small-gap cutting as described in claim 1, characterized in that, In step S2, the key geometric features include corners, cuts, and small gap areas formed between adjacent cut pieces.

3. The method for solving the problem of damaged pieces during small-gap cutting as described in claim 1, characterized in that, In step S3, a dynamic safety distance threshold is set. When the shortest distance between a corner, cut, and adjacent cut piece is less than the threshold, the system automatically splits the cutting path into two paths.

4. The method for solving the problem of damaged pieces during small-gap cutting as described in claim 3, characterized in that, The dual paths include a basic trimming path and a fine auxiliary path. The basic trimming path mainly consists of long straight lines and areas with high curvature, while the fine auxiliary path mainly consists of sensitive areas such as small gaps, corners, or cuts.

5. The method for solving the problem of damaged pieces during small-gap cutting as described in claim 4, characterized in that, The basic cutting path uses a circular blade, while the fine auxiliary path uses one or more of the following: a vibrating blade, a pneumatic blade, and a cutting tool.

6. The method for solving the problem of damaged pieces during small-gap cutting as described in claim 1, characterized in that, In step S3, the multi-attribute parameters include at least the material of the cut piece, thickness, cutting accuracy level, tool wear condition, and minimum safety clearance threshold.

7. A method for solving the problem of small-gap cutting damage as described in any one of claims 1 to 6, characterized in that, A laser displacement sensor is introduced during the cutting process for online monitoring.

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