A diagram-free box mode programming method based on bending machine system

Abstract

The present invention provides a drawing-free box mode programming method based on a bending machine system, comprising the following steps: S1: initializing a base plate and defining a direction; S2: drawing a bending path and assigning work step parameters; S3: acquiring bending data in real time and generating a two-dimensional unfolded view; S4: generating a complete two-dimensional unfolded view of a box-type part; the present invention, through the drawing-free box mode programming method, can directly generate a bending path according to user input parameters, avoiding the complexity of manually guessing and adjusting the bending sequence, thereby simplifying the programming process; cooperating with a fault management module to monitor the state of the bending machine in real time, reducing errors and operational difficulties caused by human factors; the present invention, through the setting of adaptive boundaries, can generate reasonable completion or trimming contours, adapt to various complex bending shape requirements, and does not require the operator to manually trim the edges; avoiding the time waste and errors caused by improper operation or lack of experience in the traditional bending process, thereby improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of computer technology, and in particular to a diagramless box mode programming method based on a bending machine system. Background Art

[0002] Press brake systems, as core equipment for sheet metal processing, are widely used in modern manufacturing. However, most existing press brake systems lack 3D functionality and rely primarily on digital or graphical programming to control sheet metal bending. These systems are typically only capable of bending single-sided sheets. Bending polygons or complex geometric shapes, such as boxes, relies solely on the operator's experience and spatial imagination. Operators must manually adjust and infer the bending sequence and angle, increasing operational complexity and the potential for error.

[0003] Even if modern press brake systems are equipped with 3D modules, they usually rely on importing 3D drawings to generate the bending program. Although this solves the bending problem of complex shapes to a certain extent, there are still some limitations. In particular, when processing shapes such as polygonal boxes, the adjacent two sides of the 3D drawings often interfere with each other, and manual edge trimming is required to solve such problems. The operator needs to pay special attention to these interfering areas and make corresponding adjustments, which not only increases the difficulty of operation but also may lead to reduced production efficiency. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a diagram-free box mode programming method based on a bending machine system.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A diagramless box mode programming method based on a bending machine system, wherein the bending machine system includes a diagram programming module, a configuration module, and a fault management module;

[0007] The drawing programming module is used to draw the bending path and set the working step parameters;

[0008] The configuration module is used to obtain the line graph and bending data in real time and generate a two-dimensional unfolded graph;

[0009] The fault management module is used to monitor the working status of the bending machine in real time and display alarm information;

[0010] The diagramless box mode programming method based on the bending machine system comprises the following steps:

[0011] S1: Initialize the substrate and define the orientation;

[0012] According to the length and width parameters input by the user, a rectangular substrate is created in the operation interface of the bending machine system as the base of the two-dimensional unfolded view of the box. The length and width of the rectangular substrate correspond to the input length and width parameters respectively.

[0013] Four directions of the substrate are defined, namely 0 degrees, 90 degrees, 180 degrees, and -90 degrees. The 0 degree and 180 degree side views are in the same straight line corresponding to the length direction of the substrate, and the 90 degree and -90 degree side views are in the same straight line corresponding to the width direction of the substrate.

[0014] S2: Draw the bending path and assign step parameters;

[0015] The following sub-steps are included:

[0016] S21: Draw the bending path based on the user's actual bending requirements;

[0017] The drawing programming module draws a bending path in the drawing area of ​​the bending machine system operation interface based on the user's actual bending requirements, and the bending path includes multiple bending edges;

[0018] The bending edge refers to the fold line generated by each bending, one fold line corresponds to one bending edge, and one bending corresponds to one bending step;

[0019] Furthermore, each plane connected to the bending edge except the base plate is a bending surface, and the bending edge, bending surface, and bending step correspond one to one;

[0020] S22: assign corresponding step parameters to the bending step;

[0021] The step parameters include number, hidden group label ID, etc.

[0022] The drawing programming module numbers the bending steps according to the order in which they are drawn, and the numbers are natural numbers that increase from 1; if the order of two bending steps is swapped, the corresponding IDs are also swapped;

[0023] Furthermore, the drawing programming module assigns a hidden grouping label id to each bending step based on the user's actual grouping requirements. Bending steps with the same hidden grouping label id belong to the same layer of bending.

[0024] The bending step includes bending data such as starting point, end point, bending angle, bending length, number, ID, etc.

[0025] S3: Acquire bending data in real time and generate a two-dimensional unfolded diagram;

[0026] The configuration module obtains the line graph and bending data in real time and generates a two-dimensional unfolded diagram, including the following sub-steps:

[0027] S31: Initialize the three-dimensional coordinate system;

[0028] A three-dimensional coordinate system is created with the rectangular substrate as the bottom surface, wherein a vertex of the rectangular substrate is used as the coordinate origin, the rectangular substrate is the XY plane, the X-axis direction is the length direction of the substrate, the Y-axis direction is the width direction of the substrate, and the Z-axis direction is perpendicular to the substrate and points upward;

[0029] The configuration module obtains the line graph and bending data in real time, and determines the normal vector of each bending surface according to the bending angle of each bending edge in the line graph;

[0030] An independent local two-dimensional coordinate system is established for each bending surface. The origin of the local two-dimensional coordinate system is the starting point of the intersection line between the bending surface and the substrate. The intersection direction of the bending surface and the substrate is the u-axis. The three-dimensional vector of the u-axis is , and select a line from the bending surface that is Orthogonal vectors , get a set of three-dimensional orthogonal basis vectors;

[0031] S32: Solve the intersection vector of adjacent bending surfaces of a single layer;

[0032] Determine the bending surfaces in the same bending layer based on the hidden group label ID of each bending step in the line graph, and perform the following processing on the bending surfaces in the same layer:

[0033] S321: Obtain the intersection vector of two adjacent bending surfaces;

[0034] For every two adjacent bending surfaces in the same bending layer, perform a cross product of the normal vectors of the two bending surfaces to obtain an intersection vector perpendicular to the two normal vectors. The direction of this intersection vector is the intersection direction of the two adjacent bending surfaces when the bending edge is adaptively closed;

[0035] S322: Projecting the intersection vector into a local two-dimensional coordinate system to obtain a two-dimensional coordinate representation;

[0036] Projecting the intersection vector obtained in step S321 into the local two-dimensional coordinate systems of the two corresponding bending surfaces to obtain the two-dimensional coordinate representation of the intersection vector on the two bending surfaces;

[0037] Specifically, assuming that two adjacent bending surfaces are 、 , the intersection vector is ,flat A pair of orthogonal basis vectors is 、 , record the intersection vector on the bending surface The two-dimensional coordinates on , ; Similarly, the intersection vector is obtained on the bending surface Two-dimensional coordinate representation on ;

[0038] S323: forming an unfolded profile of the bending surface;

[0039] Repeat step S323 until the two-dimensional coordinate representation of the intersection lines of all adjacent bending surfaces in the local two-dimensional coordinate system is obtained;

[0040] All the obtained two-dimensional coordinate representations are connected in sequence to form the unfolded outline of the bending surface.

[0041] S4: Generate a complete 2D unfolded view of the box-like parts;

[0042] Traverse all the bending layers and determine whether the bending layer is a complete layer or an incomplete layer. The complete layer is a layer with all edges of the bottom surface bent, and the incomplete layer is a layer with no edges bent.

[0043] Furthermore, the specific method for determining whether the bending layer is a complete layer or an incomplete layer is as follows:

[0044] In the four directions of the substrate, the bending information in each direction is represented by an array, the dimension of the array is the number of bending steps in this direction, and the minimum number of bending steps in the four directions is the number of bending steps of a complete layer; a bending layer that exceeds the number of bending steps of a complete layer is an incomplete layer;

[0045] For a complete layer, the method for solving the intersection vector of adjacent bending surfaces of a single layer in step S32 is called to calculate the intersection vector of each adjacent bending surface and generate a closed unfolded contour;

[0046] For an incomplete layer, the contour without the bent edge is completed or trimmed by setting an adaptive boundary according to actual needs, and then the method of solving the intersection vector of adjacent bent surfaces of a single layer in step S32 is called to generate an unfolded contour with an adaptive boundary;

[0047] Specifically, for an incomplete layer, if there is a bending edge in the adjacent direction, the intersection line of the adjacent bending edges is solved according to the method of S32 and converted into the completion or trimming parameter of the contour; if there is no bending edge in the adjacent direction, the contour of the edge is generated according to the default value or this parameter is set according to actual needs;

[0048] The unfolded contours of all bending layers are spliced ​​in hierarchical order to finally generate a complete two-dimensional unfolded drawing of the box-type part.

[0049] Furthermore, the fault management module sets alarm rules in advance and monitors the working status of the bending machine in real time through sensors (such as temperature sensors, pressure sensors, position sensors, etc.). When the data collected by the sensor exceeds the threshold set in the rules, the fault management module issues an alarm on the operation interface to remind the operator to take necessary measures.

[0050] Compared with the prior art, the present invention has the following beneficial effects:

[0051] The present invention uses a non-graphic box mode programming method to directly generate a bending path based on the user's input parameters, avoiding the complexity of manually guessing and adjusting the bending sequence, thereby simplifying the programming process; in conjunction with the fault management module, the status of the bending machine is monitored in real time, reducing errors and operational difficulties caused by human factors;

[0052] The present invention can generate reasonable completion or trimming contours through the setting of adaptive boundaries to meet the requirements of various complex bending shapes, without the need for operators to manually trim the edges; the operator only needs to operate according to the programming results, avoiding the time waste and errors caused by improper operation or lack of experience in the traditional bending process, and improving overall production efficiency.

[0053] By generating a 2D unfolded diagram, the bending path and process parameters are visualized and clearly defined, eliminating the operator's need to rely on experience and spatial imagination to infer the bending sequence and angles. This makes bending operations for complex geometries (such as boxes) more intuitive and accurate, reducing subjective errors and complexity during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 This is a flowchart of the steps of a diagramless box mode programming method based on a bending machine system of the present invention. DETAILED DESCRIPTION

[0055] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.

[0056] like Figure 1 As shown, a diagramless box mode programming method based on a bending machine system, the bending machine system includes a drawing programming module, a configuration module, and a fault management module;

[0057] The drawing programming module is used to draw the bending path and set the working step parameters;

[0058] The configuration module is used to obtain the line graph and bending data in real time and generate a two-dimensional unfolded graph;

[0059] The fault management module is used to monitor the working status of the bending machine in real time and display alarm information;

[0060] The diagramless box mode programming method based on the bending machine system comprises the following steps:

[0061] S1: Initialize the substrate and define the orientation;

[0062] According to the length and width parameters input by the user, a rectangular substrate is created in the operation interface of the bending machine system as the base of the two-dimensional unfolded view of the box. The length and width of the rectangular substrate correspond to the input length and width parameters respectively.

[0063] Four directions of the substrate are defined, namely 0 degrees, 90 degrees, 180 degrees, and -90 degrees. The 0 degree and 180 degree side views are in the same straight line corresponding to the length direction of the substrate, and the 90 degree and -90 degree side views are in the same straight line corresponding to the width direction of the substrate.

[0064] S2: Draw the bending path and assign step parameters;

[0065] The following sub-steps are included:

[0066] S21: Draw the bending path based on the user's actual bending requirements;

[0067] The drawing programming module draws a bending path in the drawing area of ​​the bending machine system operation interface based on the user's actual bending requirements, and the bending path includes multiple bending edges;

[0068] The bending edge refers to the fold line generated by each bending, one fold line corresponds to one bending edge, and one bending corresponds to one bending step;

[0069] Furthermore, each plane connected to the bending edge except the base plate is a bending surface, and the bending edge, bending surface, and bending step correspond one to one;

[0070] S22: assign corresponding step parameters to the bending step;

[0071] The step parameters include number, hidden group label ID, etc.

[0072] The drawing programming module numbers the bending steps according to the order in which they are drawn, and the numbers are natural numbers that increase from 1; if the order of two bending steps is swapped, the corresponding IDs are also swapped;

[0073] Furthermore, the drawing programming module assigns a hidden grouping label id to each bending step based on the user's actual grouping requirements. Bending steps with the same hidden grouping label id belong to the same layer of bending.

[0074] The bending step includes bending data such as starting point, end point, bending angle, bending length, number, ID, etc.

[0075] S3: Acquire bending data in real time and generate a two-dimensional unfolded diagram;

[0076] The configuration module obtains the line graph and bending data in real time and generates a two-dimensional unfolded diagram, including the following sub-steps:

[0077] S31: Initialize the three-dimensional coordinate system;

[0078] A three-dimensional coordinate system is created with the rectangular substrate as the bottom surface, wherein a vertex of the rectangular substrate is used as the coordinate origin, the rectangular substrate is the XY plane, the X-axis direction is the length direction of the substrate, the Y-axis direction is the width direction of the substrate, and the Z-axis direction is perpendicular to the substrate and points upward;

[0079] The configuration module obtains the line graph and bending data in real time, and determines the normal vector of each bending surface according to the bending angle of each bending edge in the line graph;

[0080] An independent local two-dimensional coordinate system is established for each bending surface. The origin of the local two-dimensional coordinate system is the starting point of the intersection line between the bending surface and the substrate. The intersection direction of the bending surface and the substrate is the u-axis. The three-dimensional vector of the u-axis is , and select a line from the bending surface that is Orthogonal vectors , get a set of three-dimensional orthogonal basis vectors;

[0081] S32: Solve the intersection vector of adjacent bending surfaces of a single layer;

[0082] Determine the bending surfaces in the same bending layer based on the hidden group label ID of each bending step in the line graph, and perform the following processing on the bending surfaces in the same layer:

[0083] S321: Obtain the intersection vector of two adjacent bending surfaces;

[0084] For every two adjacent bending surfaces in the same bending layer, perform a cross product of the normal vectors of the two bending surfaces to obtain an intersection vector perpendicular to the two normal vectors. The direction of this intersection vector is the intersection direction of the two adjacent bending surfaces when the bending edge is adaptively closed;

[0085] S322: Projecting the intersection vector into a local two-dimensional coordinate system to obtain a two-dimensional coordinate representation;

[0086] Projecting the intersection vector obtained in step S321 into the local two-dimensional coordinate systems of the two corresponding bending surfaces to obtain the two-dimensional coordinate representation of the intersection vector on the two bending surfaces;

[0087] Specifically, assuming that two adjacent bending surfaces are 、 , the intersection vector is ,flat A pair of orthogonal basis vectors is 、 , record the intersection vector on the bending surface The two-dimensional coordinates on , ; Similarly, the intersection vector is obtained on the bending surface Two-dimensional coordinate representation on ;

[0088] S323: forming an unfolded profile of the bending surface;

[0089] Repeat step S323 until the two-dimensional coordinate representation of the intersection lines of all adjacent bending surfaces in the local two-dimensional coordinate system is obtained;

[0090] All the obtained two-dimensional coordinate representations are connected in sequence to form the unfolded outline of the bending surface.

[0091] S4: Generate a complete 2D unfolded view of the box-like parts;

[0092] Traverse all the bending layers and determine whether the bending layer is a complete layer or an incomplete layer. The complete layer is a layer with all edges of the bottom surface bent, and the incomplete layer is a layer with no edges bent.

[0093] Furthermore, the specific method for determining whether the bending layer is a complete layer or an incomplete layer is as follows:

[0094] In the four directions of the substrate, the bending information in each direction is represented by an array, the dimension of the array is the number of bending steps in this direction, and the minimum number of bending steps in the four directions is the number of bending steps of a complete layer; a bending layer that exceeds the number of bending steps of a complete layer is an incomplete layer;

[0095] For a complete layer, the method for solving the intersection vector of adjacent bending surfaces of a single layer in step S32 is called to calculate the intersection vector of each adjacent bending surface and generate a closed unfolded contour;

[0096] For an incomplete layer, the contour without the bent edge is completed or trimmed by setting an adaptive boundary according to actual needs, and then the method of solving the intersection vector of adjacent bent surfaces of a single layer in step S32 is called to generate an unfolded contour with an adaptive boundary;

[0097] Specifically, for an incomplete layer, if there is a bending edge in the adjacent direction, the intersection line of the adjacent bending edges is solved according to the method of S32 and converted into the completion or trimming parameter of the contour; if there is no bending edge in the adjacent direction, the contour of the edge is generated according to the default value or this parameter is set according to actual needs;

[0098] The unfolded contours of all bending layers are spliced ​​in hierarchical order to finally generate a complete two-dimensional unfolded drawing of the box-type part.

[0099] Specifically, the two-dimensional expansion diagram is generated as follows:

[0100] Select the 0-180 degree direction polyline chart (90 degrees and -90 degrees are the same), and traverse all the polylines on the left and right sides of the baseline segment starting from the baseline segment. Both the left and right sides are arranged in sequence starting from the baseline segment to form two new linked lists. At the same time, store the bending data such as the polyline starting point, polyline end point, bending angle, bending length, number, ID, etc. In the unfolded drawing panel, from the direction of 0 to 180 degrees of the rectangular substrate, such as the 0 degree direction, loop the newly combined 0 degree direction polyline linked list to draw rectangles in sequence according to the bending length, and call the edge trimming algorithm in real time during the drawing process.

[0101] Furthermore, the fault management module sets alarm rules in advance and monitors the working status of the bending machine in real time through sensors (such as temperature sensors, pressure sensors, position sensors, etc.). When the data collected by the sensor exceeds the threshold set in the rules, the fault management module issues an alarm on the operation interface to remind the operator to take necessary measures.

[0102] By monitoring sensor data and setting alarm rules, an alarm can be issued in advance when equipment abnormalities occur, helping operators take timely measures to prevent failures. This can effectively avoid sudden equipment failures and reduce downtime. It can also reduce production stagnation caused by failures and improve production efficiency. It not only helps maintain equipment, but also avoids safety hazards caused by equipment failures.

[0103] Furthermore, the bending machine system further includes a library management module, which includes a mold library, a material library, and an angle correction library;

[0104] The mold library is used to store different upper molds and lower molds. Each mold includes parameters such as mold type, material, size, and applicable bending process. According to the bending requirements input by the user (such as angle, material type, process step, etc.), the appropriate mold is selected from the mold library.

[0105] The material library is used to store parameter data of different materials, including information such as material type, thickness, elastic modulus, yield strength, etc.; according to the material type input by the user in the drawing programming module, the corresponding material parameters are automatically selected from the material library;

[0106] The angle correction library is used to store angle deviation correction data that may occur during the actual bending process. When the user sets the bending angle, the system can automatically correct the angle data based on the content of the angle correction library to ensure the accuracy of the final result.

[0107] Automatic selection of molds and materials reduces the time required for repeated attempts and manual selection. The angle correction function reduces the trial and error and correction steps in the bending process, improving overall production efficiency and saving time and production costs. Effective management of mold and material libraries can achieve efficient resource utilization, reduce unnecessary material waste, avoid inventory redundancy, and improve resource allocation efficiency.

[0108] The present invention has been described with reference to the above embodiments. However, the above embodiments are merely exemplary embodiments of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the present invention. On the contrary, modifications and improvements that do not depart from the spirit and scope of the present invention are intended to be protected by the present invention.

Claims

1. A diagramless box mode programming method based on a bending machine system, characterized by: The following steps are involved: S1: Initialize the substrate and define the orientation; Create a rectangular base plate in the operation interface of the bending machine system as the base of the two-dimensional unfolded view of the box, and define the four directions of the base plate; The bending machine system includes a drawing programming module, a configuration module, and a fault management module; S2: Draw the bending path and assign step parameters; The following sub-steps are included: S21: Draw the bending path based on the user's actual bending requirements; S22: assign corresponding step parameters to the bending step; S3: Acquire bending data in real time and generate a two-dimensional unfolded diagram; The configuration module obtains the line graph and bending data in real time and generates a two-dimensional unfolded diagram, including the following sub-steps: S31: Initialize the three-dimensional coordinate system; S32: Solve the intersection vector of adjacent bending surfaces of a single layer; The following sub-steps are included: S321: Obtain the intersection vector of two adjacent bending surfaces; For every two adjacent bending surfaces in the same bending layer, perform a cross product of the normal vectors of the two bending surfaces to obtain an intersection vector perpendicular to the two normal vectors. The direction of this intersection vector is the intersection direction of the two adjacent bending surfaces when the bending edge is adaptively closed; S322: Projecting the intersection vector into a local two-dimensional coordinate system to obtain a two-dimensional coordinate representation; Projecting the intersection vector obtained in step S321 into the local two-dimensional coordinate systems of the two corresponding bending surfaces to obtain the two-dimensional coordinate representation of the intersection vector on the two bending surfaces; S323: forming an unfolded profile of the bending surface; Repeat step S323 until the two-dimensional coordinate representation of the intersection lines of all adjacent bending surfaces in the local two-dimensional coordinate system is obtained; Connect all the obtained two-dimensional coordinate representations in sequence to form the unfolded outline of the bending surface; S4: Generate a complete 2D unfolded view of the box-like parts; Traverse all the bending layers and determine whether the bending layer is a complete layer or an incomplete layer. The complete layer is a layer with all edges of the bottom surface bent, and the incomplete layer is a layer with no edges bent. The unfolded contours of all bending layers are spliced ​​in hierarchical order to finally generate a complete two-dimensional unfolded drawing of the box-type part.

2. The diagramless box mode programming method based on the bending machine system according to claim 1, characterized in that: The specific content of step S1 is as follows: According to the length and width parameters input by the user, a rectangular substrate is created in the operation interface of the bending machine system as the base of the two-dimensional unfolded view of the box. The length and width of the rectangular substrate correspond to the input length and width parameters respectively; and the four directions of the substrate are defined; The drawing programming module is used to draw the bending path and set the working step parameters; The configuration module is used to obtain the line graph and bending data in real time and generate a two-dimensional unfolded graph; The fault management module is used to monitor the working status of the bending machine in real time and display alarm information.

3. The diagramless box mode programming method based on the bending machine system according to claim 1, characterized in that: The specific contents of step S2 are as follows: S21: Draw the bending path based on the user's actual bending requirements; The drawing programming module draws a bending path in the drawing area of ​​the bending machine system operation interface based on the user's actual bending requirements, and the bending path includes multiple bending edges; The bending edge refers to the fold line generated by each bending, one fold line corresponds to a bending edge, and one bending corresponds to a bending step; except for the substrate, each plane connected to the bending edge is a bending surface, and the bending edge, bending surface, and bending step correspond one to one; S22: assign corresponding step parameters to the bending step; The step parameters include number and hidden group label ID; The drawing programming module numbers the bending steps according to the order in which they are drawn, and the numbers are natural numbers that increase from 1; if the order of two bending steps is swapped, the corresponding IDs are also swapped; The drawing programming module assigns a hidden grouping label ID to each bending step based on the user's actual grouping requirements. Bending steps with the same hidden grouping label ID belong to the same layer of bending; the bending step includes a starting point, an end point, a bending angle, a bending length, a number, and an ID.

4. The diagramless box mode programming method based on a bending machine system according to claim 1, characterized in that: The specific contents of step S31 are as follows: A three-dimensional coordinate system is created with a rectangular substrate as the bottom surface. The configuration module obtains the line graph and bending data in real time, and determines the normal vector of each bending surface based on the bending angle of each bending edge in the line graph. An independent local two-dimensional coordinate system is established for each bending surface, the origin of the local two-dimensional coordinate system is the starting point of the intersection line between the bending surface and the substrate, and a set of orthogonal basis vectors are selected from the bending surface.

5. The diagramless box mode programming method based on a bending machine system according to claim 1, characterized in that: In step S4, for the complete layer, the method for solving the intersection vector of adjacent bending surfaces of a single layer in step S32 is called to calculate the intersection vector of each adjacent bending surface and generate a closed unfolded contour; For an incomplete layer, the contour without the bent edge is completed or trimmed by setting an adaptive boundary according to actual needs, and then the method of solving the intersection vector of adjacent bent surfaces of a single layer in step S32 is called to generate an unfolded contour with an adaptive boundary; The unfolded contours of all bending layers are spliced ​​in hierarchical order to finally generate a complete two-dimensional unfolded drawing of the box-type part.

6. The diagramless box mode programming method based on a bending machine system according to claim 1, characterized in that: The fault management module sets alarm rules in advance and monitors the working status of the bending machine in real time through sensors. When the data collected by the sensor exceeds the threshold set in the rule, the fault management module issues an alarm on the operation interface to remind the operator to take necessary measures.

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