Method and device for achieving tool path planning processing for numerical control five-axis bridge type cutting machine, processor and computer readable storage medium of processor

Abstract

The invention relates to a method for realizing tool path planning for a numerical control five-axis bridge type cutting machine, which comprises the following steps of: processing data, and generating a tool cutting path; generating a tool interference surface; interference is judged, and if yes, the tool path is scattered into small line segments; whether other cutter cutting paths exist or not is judged, and if yes, the cutter cutting path is switched; otherwise, marking as an interference section; marking as a non-interference section; and outputting a non-interference cutting path. The invention further relates to a device, a processor and a computer readable storage medium for performing tool path planning processing on the numerical control five-axis bridge type cutting machine. According to the method, the device, the processor and the computer readable storage medium for achieving tool path planning processing for the numerical control five-axis bridge type cutting machine, the tool path planning strategy of the saw blade or the milling cutter is implemented, the mechanical characteristics of the saw blade or the milling cutter are fully utilized, any workpiece can be machined completely, and the application range is wide.

Description

Technical Field

[0001] The present invention relates to the field of CNC machining, and in particular to the field of tool path generation for a five-axis bridge cutting machine, and specifically refers to a method, device, processor and computer-readable storage medium thereof for implementing tool path planning processing for a CNC five-axis bridge cutting machine. Background Art

[0002] The processing tool of the bridge cutting machine is mainly a saw blade. There is overcutting during the saw blade processing, such as Figure 1 , BC is the overcut segment. Since the polygon has concave and convex properties, when cutting a concave polygon, the saw blade overcuts and causes the workpiece to be damaged, such as Figure 2 , the BC segment cuts into the workpiece. When planning the tool path, the interference avoidance strategy can effectively prevent the saw blade from damaging the workpiece and ensure the integrity of the workpiece processing. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a method, device, processor and computer-readable storage medium for tool path planning processing for a CNC five-axis bridge cutting machine, which has good integrity, simple operation and a wide range of applications.

[0004] In order to achieve the above-mentioned object, the method, device, processor and computer-readable storage medium for implementing tool path planning processing for a CNC five-axis bridge cutting machine of the present invention are as follows:

[0005] The method for realizing tool path planning processing for a CNC five-axis bridge cutting machine is mainly characterized in that the method comprises the following steps:

[0006] (1) Process data and generate tool cutting path;

[0007] (2) Generate tool interference surface;

[0008] (3) Determine interference. If yes, proceed to step (6); otherwise, proceed to step (4);

[0009] (4) Marked as non-interference segment;

[0010] (5) Output the interference-free cutting path and end the step;

[0011] (6) Break the tool path into small line segments;

[0012] (7) Determine whether there are other tool cutting paths. If so, switch the tool cutting path and continue with step (2); otherwise, mark it as an interference segment and continue with step (5).

[0013] Preferably, the step (1) specifically comprises the following steps:

[0014] (1.1) Import image metadata;

[0015] (1.2) Input process parameters;

[0016] (1.3) Construct part outline;

[0017] (1.4) Generate tool cutting path.

[0018] Preferably, the method further comprises performing rectangular cutting outside the protection, specifically comprising the following steps:

[0019] (1-1) Add inward cutter compensation to the machining trajectory according to half the thickness of the saw blade;

[0020] (1-2) Scatter the trajectory after tool compensation according to a fixed length;

[0021] (1-3) The interference surface is generated by the scattered segment. The interference surface refers to the projection area of ​​the tool on the XY plane, and the area swept on the plate along the tool path;

[0022] (1-4) Determine whether the interference surface of the scattered segment interferes with other segments. If so, the current segment is marked as an interference segment; otherwise, the current line segment is marked to be processed by the saw blade;

[0023] (1-5) If it is an interference section, switch to the milling cutter to determine whether the milling cutter processing interferes. If not, mark the milling cutter processing;

[0024] (1-6) Output non-interference segment.

[0025] The main feature of the device for realizing tool path planning processing for a CNC five-axis bridge cutting machine is that the device comprises:

[0026] a processor configured to execute computer executable instructions;

[0027] The memory stores one or more computer executable instructions. When the computer executable instructions are executed by the processor, the various steps of the method for realizing tool path planning processing for the CNC five-axis bridge cutting machine are implemented.

[0028] The processor for implementing tool path planning processing for a CNC five-axis bridge cutting machine has the main feature that the processor is configured to execute computer executable instructions. When the computer executable instructions are executed by the processor, the various steps of the above-mentioned method for implementing tool path planning processing for a CNC five-axis bridge cutting machine are implemented.

[0029] The main feature of the computer-readable storage medium is that a computer program is stored thereon, and the computer program can be executed by a processor to implement the various steps of the above-mentioned method for tool path planning processing for a CNC five-axis bridge cutting machine.

[0030] The method, device, processor and computer-readable storage medium of the present invention are used to implement tool path planning processing for a CNC five-axis bridge cutting machine. By implementing a tool path planning strategy for a saw blade or milling cutter, the mechanical characteristics of the saw blade / milling cutter are fully utilized, so that any workpiece can be completely processed, and the application range is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overcutting situation during saw blade processing in the prior art.

[0032] Figure 2 This is a schematic diagram of a workpiece being damaged due to overcutting of a saw blade in the prior art.

[0033] Figure 3 It is a schematic diagram of a tool compensation trajectory for adding inward tool compensation to a machining trajectory according to a method for realizing tool path planning processing for a CNC five-axis bridge cutting machine of the present invention.

[0034] Figure 4 It is a schematic diagram of a saw blade cutting a vertical arc according to the method for implementing tool path planning processing for a CNC five-axis bridge cutting machine of the present invention.

[0035] Figure 5 The present invention is a flow chart of a method for implementing tool path planning processing for a CNC five-axis bridge cutting machine. DETAILED DESCRIPTION

[0036] In order to more clearly describe the technical content of the present invention, further description is given below in conjunction with specific embodiments.

[0037] The method for implementing tool path planning processing for a CNC five-axis bridge cutting machine of the present invention comprises the following steps:

[0038] (1) Process data and generate tool cutting path;

[0039] (2) Generate tool interference surface;

[0040] (3) Determine interference. If yes, proceed to step (6); otherwise, proceed to step (4);

[0041] (4) Marked as non-interference segment;

[0042] (5) Output the interference-free cutting path and end the step;

[0043] (6) Break the tool path into small line segments;

[0044] (7) Determine whether there are other tool cutting paths. If so, switch the tool cutting path and continue with step (2); otherwise, mark it as an interference segment and continue with step (5).

[0045] As a preferred embodiment of the present invention, the step (1) specifically comprises the following steps:

[0046] (1.1) Import image metadata;

[0047] (1.2) Input process parameters;

[0048] (1.3) Construct part outline;

[0049] (1.4) Generate tool cutting path.

[0050] As a preferred embodiment of the present invention, the method further includes performing rectangular cutting outside the protection, specifically comprising the following steps:

[0051] (1-1) Add inward cutter compensation to the machining trajectory according to half the thickness of the saw blade;

[0052] (1-2) Scatter the trajectory after tool compensation according to a fixed length;

[0053] (1-3) The interference surface is generated by the scattered segment. The interference surface refers to the projection area of ​​the tool on the XY plane, and the area swept on the plate along the tool path;

[0054] (1-4) Determine whether the interference surface of the scattered segment interferes with other segments. If so, the current segment is marked as an interference segment; otherwise, the current line segment is marked to be processed by the saw blade;

[0055] (1-5) If it is an interference section, switch to the milling cutter to determine whether the milling cutter processing interferes. If not, mark the milling cutter processing;

[0056] (1-6) Output non-interference segment.

[0057] The device for implementing tool path planning processing for a CNC five-axis bridge cutting machine of the present invention comprises:

[0058] a processor configured to execute computer executable instructions;

[0059] The memory stores one or more computer executable instructions. When the computer executable instructions are executed by the processor, the various steps of the method for realizing tool path planning processing for the CNC five-axis bridge cutting machine are implemented.

[0060] The processor of the present invention is used to implement tool path planning processing for a CNC five-axis bridge cutting machine, wherein the processor is configured to execute computer executable instructions. When the computer executable instructions are executed by the processor, the various steps of the above-mentioned method for implementing tool path planning processing for a CNC five-axis bridge cutting machine are implemented.

[0061] The computer-readable storage medium of the present invention stores a computer program thereon, and the computer program can be executed by a processor to implement the various steps of the above-mentioned method for realizing tool path planning processing for a CNC five-axis bridge cutting machine.

[0062] In a specific embodiment of the present invention, a tool path planning strategy for a bridge cutting machine CAM software is proposed. Any graphic element is input to plan the tool processing path. When there is interference from the saw blade, the milling cutter is automatically switched to ensure the integrity of the workpiece processing.

[0063] The present invention imports DXF files or draws primitives, and the CAM software plans the actual tool path trajectory based on the primitive information while meeting certain physical conditions. The overall steps are as follows:

[0064] 1. Import metadata;

[0065] 2. Input process parameters, such as tool parameters, workpiece thickness, etc.;

[0066] 3. Plan tool path;

[0067] 4. Output tool path file;

[0068] 5. The CNC system loads and analyzes the processing files generated by CAM for processing.

[0069] In the process of judging the saw blade compensation, when judging whether the current line segment cutting will interfere with other line segments of the primitive, it is necessary to first give the trajectory according to the ordinary tool compensation, and then determine the interference position, leaving the interference part to the milling cutter for processing.

[0070] Ordinary tool compensation means expanding or shrinking the closed figure according to the tool radius. If the machining trajectory is expanded, the closed figure being processed is the retained object. It can be called internal preservation. On the contrary, if the machining trajectory is reduced, the workpiece except the closed figure is the retained object, which is called external preservation.

[0071] The following are examples:

[0072] Perform a rectangular cut outside the protection, assuming that the processing order is counterclockwise, including the following steps:

[0073] (1) Add a cutter compensation to the machining trajectory according to half the saw blade thickness δ / 2, giving Figure 3 Tool compensation trajectory.

[0074] (2) The trajectory after tool compensation is broken up according to a fixed length.

[0075] (3) The interference surface is generated by the scattered segments. The interference surface refers to the projection area of ​​the tool on the XY plane, and the area swept on the plate along the tool path. Figure 4 , the saw blade cuts a vertical arc, the projection area of ​​the saw blade is a rectangle, represented by blue, and the red figure is the interference surface generated by the saw blade along the tool path.

[0076] (4) Determine whether the interference surface of the scattered segment will interfere with other segments. If so, the current segment is marked as an interference segment. Otherwise, the current line segment is marked as being processed by the saw blade.

[0077] (5) Interference section: switch to the milling cutter to determine whether the milling cutter processing interferes. If not, mark the milling cutter processing.

[0078] (6) Output non-interference segment.

[0079] The specific implementation scheme of this embodiment can refer to the relevant description in the above embodiment, which will not be repeated here.

[0080] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0081] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" refers to at least two.

[0082] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0083] The method, device, processor and computer-readable storage medium of the present invention are used to implement tool path planning processing for a CNC five-axis bridge cutting machine. By implementing a tool path planning strategy for a saw blade or milling cutter, the mechanical characteristics of the saw blade / milling cutter are fully utilized, so that any workpiece can be completely processed, and the application range is wide.

[0084] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it is apparent that various modifications and variations may be made without departing from the spirit and scope of the present invention. Therefore, the specification and drawings should be regarded as illustrative rather than restrictive.

Claims

1. A method for implementing tool path planning for a CNC five-axis bridge cutting machine, characterized in that: The method comprises the following steps: (1) Process data and generate tool cutting path; (2) Generate tool interference surface; (3) Determine interference. If yes, proceed to step (6); otherwise, proceed to step (4); (4) Marked as non-interference segment; (5) Output the interference-free cutting path and end the step; (6) Break the tool path into small line segments; (7) Determine whether there are other tool cutting paths. If so, switch the tool cutting path and continue with step (2); otherwise, mark it as an interference segment and continue with step (5).

2. The method for implementing tool path planning for a CNC five-axis bridge cutting machine according to claim 1, characterized in that: The step (1) specifically comprises the following steps: (1.1) Import image metadata; (1.2) Input process parameters; (1.3) Construct part outline; (1.4) Generate tool cutting path.

3. The method for implementing tool path planning for a CNC five-axis bridge cutting machine according to claim 1, characterized in that: The method further includes performing rectangular cutting outside the protection, which specifically includes the following steps: (1-1) Add inward cutter compensation to the machining trajectory according to half the thickness of the saw blade; (1-2) Scatter the trajectory after tool compensation according to a fixed length; (1-3) The interference surface is generated by the scattered segment. The interference surface refers to the projection area of ​​the tool on the XY plane, and the area swept on the plate along the tool path; (1-4) Determine whether the interference surface of the scattered segment interferes with other segments. If so, the current segment is marked as an interference segment; otherwise, the current line segment is marked to be processed by the saw blade; (1-5) If it is an interference section, switch to the milling cutter to determine whether the milling cutter processing interferes. If not, mark the milling cutter processing; (1-6) Output non-interference segment.

4. A device for implementing tool path planning processing for a CNC five-axis bridge cutting machine, characterized in that: The device comprises: a processor configured to execute computer executable instructions; A memory storing one or more computer executable instructions, wherein when the computer executable instructions are executed by the processor, the steps of the method for tool path planning processing for a CNC five-axis bridge cutting machine described in any one of claims 1 to 3 are implemented.

5. A processor for implementing tool path planning for a CNC five-axis bridge cutting machine, characterized in that: The processor is configured to execute computer executable instructions. When the computer executable instructions are executed by the processor, the various steps of the method for tool path planning processing for a CNC five-axis bridge cutting machine described in any one of claims 1 to 3 are implemented.

6. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and the computer program can be executed by a processor to implement the various steps of the method for tool path planning processing for a CNC five-axis bridge cutting machine as described in any one of claims 1 to 3.

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