Thin-wall continuous bend pipe bending equipment and bending method

Abstract

A thin-walled continuous bend pipe bending device and bending method. The traditional method is extremely inefficient and prone to errors in "theoretical bending" by operators, or misunderstanding of the spatial bending direction by design specialists when converting three-view drawings. The present invention comprises: a 3D modeling model design module and a bending device; the 3D modeling model design module is used to convert the spatial general drawing into a 3D graphic; the bending device is used to receive commands from the 3D modeling model design module and bend the pipe. The present invention is used for thin-walled continuous bend pipe bending.

Description

Technical Field

[0001] The invention relates to a thin-wall continuous-bend pipe bending device and a bending method. Background Art

[0002] Spatial bending automation technology is a highly innovative and cutting-edge scientific and technological field. It focuses on performing precise and efficient bending operations on spatial structures, and using advanced automation systems and algorithms to achieve the shaping of complex spatial shapes.

[0003] In traditional pipe bending technology, the design specialist needs to convert the design general drawing into a segmented drawing, and then draw it into a two-dimensional three-view drawing and send it to the workshop. The operators of the workshop team need to fold the three-view drawing back to the spatial view through the spatial imagination or reference line, so as to clearly understand the spatial bending point and direction. However, this traditional method is extremely inefficient and prone to errors in "theoretical bending" by the operator, or the design specialist may misunderstand the spatial bending direction when converting the three-view drawing. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a thin-walled continuous bend pipe bending device and a bending method.

[0005] The purpose of the present invention is to be achieved through the following technical solutions: A thin-walled continuous bending tube bending device, which comprises a 3D modeling model design module and a bending device; The 3D modeling model design module is used to convert the overall space plan into a 3D graphic; The bending device is used to receive commands from the 3D modeling design module and bend the pipe.

[0006] The thin-walled continuous bending pipe bending equipment, the 3D modeling model design module includes a data acquisition module, a 3D modeling simulation generation module, a parameter adjustment module, a data export module and a data acquisition module; The 3D modeling simulation generation module generates the bent pipe in single bend, double bend, triple bend and other quantities to simulate whether interference conditions occur; The parameter adjustment module performs finite element data analysis on the collected data to evaluate whether the strength can meet the pipeline operation requirements; The data export module exports the 3D model data generated by the final adjustment parameters.

[0007] A bending method for a thin-walled continuous bending pipe bending device, the method comprising the following steps: (1) Input the data of pipeline and elbow connection through the data acquisition module; (2) The absolute coordinate system points of the thin-wall bending of this structure can be generated through CAD commands; (3) Find the bending point through the relative coordinate system point: 1, 2 absolute coordinate system point; (4) In the 3D modeling simulation generation module, generate the OD60 specification 2-bend 3D modeling rendering; (5) In the parameter adjustment module, adjust the absolute coordinate system data of points A, B, C, D, 1, and 2. The adjustment deviation should be based on the fluctuation value of previous data. If there is no fluctuation value, 5 two-piece bends with the same specifications, wall thickness, material, and structure diagram should be tested for data evaluation; (6) In the 3D modeling simulation generation module, regenerate the 3D modeling renderings; (7) In the data export module, export data; (8) The bending equipment is introduced. At the same time, the pipe with prefabricated pipe size is fixed in the pipe bending machine jig. The bending command is executed through the PC console. At the same time, pressure is applied to cause it to bend and form. The appropriate bending forming rate and pressure are matched to produce a bent product with qualified appearance. (9) Measure data and record them in the project data record. During this process, the operating parameters will provide feedback information through sensors and be automatically collected into the control system.

[0008] The bending method of the thin-walled continuous bend pipe bending equipment, the step (1) inputting the data of the connection between the pipeline and the bend includes establishing a starting point A relative to the coordinate system (X0, Y0, Z0), the coordinates of A are 0,0,0, establishing a starting point B relative to the coordinate system of point A, the coordinates of B are 0,0,680, establishing a starting point C relative to the coordinate system of point B, the coordinates of C are 608,608,0, and establishing a starting point D relative to the coordinate system of point C, the coordinates of D are 481,481,0. Beneficial Effects

[0009] 1. The present invention reduces the work of converting space bending from 3D to 2D and the guessing work of bending operators from 2D to 3D by digitally integrating 3D models. The morphology and characteristics of the final product are directly displayed from the digital model. At the same time, through the front CNC operation of the automated equipment, the inconsistent product quality caused by factors such as different operator skills is reduced. At the same time, when making small batches of bending, bending components of equal quality and precision can be efficiently manufactured. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the process of the present invention; Figure 2 This is an example of a finished sample of a bent pipe after bending of the present invention; Figure 3It is a schematic diagram of point generation in the absolute coordinate system; Figure 4 It is a structural diagram of the bending point; Figure 5 This is the rendering of Lianwan 3D modeling. DETAILED DESCRIPTION

[0011] A thin-walled continuous bending tube bending device, comprising: a 3D modeling model design module and a bending device; The 3D modeling model design module is used to convert the overall space plan into a 3D graphic; The bending device is used to receive commands from the 3D modeling design module and bend the pipe.

[0012] The thin-walled continuous bending pipe bending equipment, the 3D modeling model design module includes a data acquisition module, a 3D modeling simulation generation module, a parameter adjustment module, a data export module and a data acquisition module; The 3D modeling simulation generation module generates the bent pipe in single bend, double bend, triple bend and other quantities to simulate whether interference conditions occur; The parameter adjustment module performs finite element data analysis on the collected data to evaluate whether the strength can meet the pipeline operation requirements (such as pressure, flow, temperature, etc.); The data export module exports the 3D model data generated by the final adjustment parameters.

[0013] The present invention can quickly and accurately complete the bending, improve production efficiency and product quality. A thin-walled continuous bend pipe bending method can accurately generate the ideal shape of the prefabricated pipe after bending in the 3D model according to the design requirements, while greatly reducing the design work and bending theoretical workload, and to a certain extent, reduce the secondary rework caused by the wrong bending direction, such as incision welding and other similar work, and solve the space bend design rework, bending rework, bending fracture welding and other working conditions caused by manual skills; 3D modeling model design module: In the data acquisition module, a 3D model is constructed for the pipes that need to be spatially bent in the design master drawing. In the 3D modeling simulation generation module, it is verified that there are no interference units in the prefabricated pipe diagram corresponding to the spatial bending position, and the initial version of the spatial bending parameters is determined to generate a 3D model.

[0014] In the parameter adjustment module, through finite element analysis, it is clear that the spatial bending strength meets the requirements of the general design parameters. At the same time, considering factors such as margin coefficient, the parameters are slightly adjusted, and in the data export module, the final 3D model generated by adjusting the parameters is exported.

[0015] Bending equipment: (1) Software: Modeling data import module: import the modeling data of the 3D model produced above into the software module of the automatic bending equipment, and execute the bending command through the PC operating console.

[0016] (2) Module for collecting equipment operating parameters: The device is equipped with an angle sensor that can transmit the bending angle to the parameter acquisition module by electrical communication.

[0017] The equipment is equipped with an automatic arm system. After the previous bend is completed, the system will rotate the spatial angle according to the 3D model and bend again.

[0018] The equipment is equipped with a speed sensor that can transmit the travel distance in a certain period of time to the parameter acquisition module.

[0019] The equipment is equipped with a hydraulic transmission device, a hydraulic measuring meter and a meter sensor, which can transmit the pressure data of the oil pressure system during operation to the data acquisition module.

[0020] Semi-automatic operation module of the equipment: The equipment is equipped with a semi-automatic operation device. During the trial production and debugging stage of automatic operation parameter processing, this function is used to obtain the most optimized pipe bending process parameters.

[0021] (3) Hardware: Swivel arm: It should meet the requirements of equipment rotation tensile strength and rotation radius.

[0022] Swivel arm shaft: should meet the requirements of equipment rotation strength.

[0023] Main tire: It should meet the dimensional requirements of the outer diameter and bending radius of the bent tube.

[0024] Main tire clamp: cooperates with the clamp head to fix the starting bending point of the pipe.

[0025] Clamp: cooperates with the main tire to clamp the pipe for bending.

[0026] Side push: cooperate with the clamp to clamp the pipe, increase the force-bearing area, expand the extension size, and reduce the out-of-roundness of the outer arc side.

[0027] Mandrel: Press the outer arc inside the tube to perform anti-deformation treatment and reduce the out-of-roundness of the outer arc side from the inside of the tube.

[0028] Precise mechanical motion control: With a series of precise mechanical movements, the metal pipe is accurately positioned in the die and pressure is applied to bend it into shape.

[0029] Sensor technology: Use various sensors to monitor key parameters in the bending process in real time, such as position, pressure, angle, etc. These sensors can provide feedback information, allowing the control system to make timely adjustments to the mechanical movement to ensure the accuracy and quality of the bending.

[0030] Intelligent control system: The intelligent control system is used to accurately control and manage the bending process. This includes the use of control devices such as programmable logic controllers (PLCs), industrial computers, and specially developed control software to set, adjust, and optimize bending process parameters, which can not only improve production efficiency and reduce labor intensity, but also realize the intelligence of the bending process.

[0031] Bending following algorithm: Building a bending process parameter model is conducive to establishing a good following trajectory algorithm, thereby obtaining excellent bending results.

[0032] A bending method for a thin-walled continuous bending pipe bending device, the method comprising the following steps: (1) Input the data of pipeline and elbow connection through the data acquisition module; (2) The absolute coordinate system points of the thin-wall bending of this structure can be generated through CAD commands; (3) Find the bending point through the relative coordinate system point: 1, 2 absolute coordinate system point; (4) In the 3D modeling simulation generation module, generate the OD60 specification 2-bend 3D modeling rendering; (5) In the parameter adjustment module, adjust the absolute coordinate system data of points A, B, C, D, 1, and 2. The adjustment deviation should be based on the fluctuation value of previous data. If there is no fluctuation value, 5 two-piece bends with the same specifications, wall thickness, material, and structure diagram should be tested for data evaluation; (6) In the 3D modeling simulation generation module, regenerate the 3D modeling renderings; (7) In the data export module, export data; (8) The bending equipment is introduced. At the same time, the pipe with prefabricated pipe size is fixed in the pipe bending machine jig. The bending command is executed through the PC console. At the same time, pressure is applied to cause it to bend and form. The appropriate bending forming rate and pressure are matched to produce a bent product with qualified appearance. (9) Measure data and record them in the project data record. During this process, the operating parameters will provide feedback information through sensors and be automatically collected into the control system.

[0033] In the step (1), the data input of the connection between the pipeline and the elbow includes establishing a starting point A relative to the coordinate system (X0, Y0, Z0), the coordinates of A are 0, 0, 0, establishing a starting point B relative to the coordinate system of point A, the coordinates of B are 0, 0, 680, establishing a starting point C relative to the coordinate system of point B, the coordinates of C are 608, 608, 0, and establishing a starting point D relative to the coordinate system of point C, the coordinates of D are 481, 481, 0.

Claims

1. A thin-walled continuous bending pipe bending equipment, characterized by :Its components include: 3D modeling model design module and bending equipment; The 3D modeling model design module is used to convert the overall space plan into a 3D graphic; The bending device is used to receive commands from the 3D modeling design module and bend the pipe.

2. The thin-walled continuous bending pipe bending equipment according to claim 1 is characterized by: : The 3D modeling model design module includes a data acquisition module, a 3D modeling simulation generation module, a parameter adjustment module, a data export module and a data acquisition module; The 3D modeling simulation generation module generates the bent pipe in single bend, double bend, triple bend and other quantities to simulate whether interference conditions occur; The parameter adjustment module performs finite element data analysis on the collected data to evaluate whether the strength can meet the pipeline operation requirements; The data export module exports the 3D model data generated by the final adjustment parameters.

3. A bending method for a thin-walled continuous bending pipe bending device according to any one of claims 1-2, characterized in that: The method comprises the following steps: (1) Input the data of pipeline and elbow connection through the data acquisition module; (2) The absolute coordinate system points of the thin-wall bending of this structure can be generated through CAD commands; (3) Find the bending point through the relative coordinate system point: 1, 2 absolute coordinate system point; (4) In the 3D modeling simulation generation module, generate the OD60 specification 2-bend 3D modeling rendering; (5) In the parameter adjustment module, adjust the absolute coordinate system data of points A, B, C, D, 1, and 2. The adjustment deviation should be based on the fluctuation value of previous data. If there is no fluctuation value, 5 two-piece bends with the same specifications, wall thickness, material, and structure diagram should be tested for data evaluation; (6) In the 3D modeling simulation generation module, regenerate the 3D modeling renderings; (7) In the data export module, export data; (8) The bending equipment is introduced. At the same time, the pipes with prefabricated pipe sizes are fixed in the pipe bending machine jig. The bending command is executed through the PC console. At the same time, pressure is applied to cause the pipes to be bent and formed. The appropriate bending forming rate and pressure are matched to produce a bent product with a qualified appearance. (9) Measure data and record them in the project data record. During this process, the operating parameters will provide feedback information through sensors and be automatically collected into the control system.

4. The bending method of a thin-walled continuous bending pipe bending equipment according to claim 3 is characterized by: In the step (1), the data input of the connection between the pipeline and the elbow includes establishing a starting point A relative to the coordinate system (X0, Y0, Z0), the coordinates of A are 0, 0, 0, establishing a starting point B relative to the coordinate system of point A, the coordinates of B are 0, 0, 680, establishing a starting point C relative to the coordinate system of point B, the coordinates of C are 608, 608, 0, and establishing a starting point D relative to the coordinate system of point C, the coordinates of D are 481, 481, 0.

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