CN-119566120-B - Intelligent heat pipe bending system and method

CN119566120BCN 119566120 BCN119566120 BCN 119566120BCN-119566120-B

Abstract

The invention relates to an intelligent pipe bending system and method for a heat pipe, wherein the pipe bending system comprises a three-dimensional model identification module, a process parameter calculation module, a pipe collision detection module, an automatic pipe bending machine module, a three-dimensional feature extraction module and a parameter compensation calculation module, wherein the three-dimensional model identification module extracts first feature parameters from a first pipe bending three-dimensional model, the process parameter calculation module calculates process parameters required by bending the heat pipe according to the first feature parameters, the pipe collision detection module carries out pipe collision interference detection according to the process parameters required by bending the heat pipe, the automatic pipe bending machine module carries out pipe bending operation on the heat pipe to be processed according to the process parameters, the three-dimensional feature extraction module builds a second pipe bending three-dimensional model according to a pipe bending and extracts second feature parameters, and the parameter compensation calculation module compares the first feature parameters with the second feature parameters. The design of the heat pipe bending process parameters reduces the dependence on the experience of operators and improves the consistency and reliability of the heat pipe processing process.

Inventors

LI YONG
SiTu Zhihao
WU BOWEN
Zhong Jiami
CHEN HANYIN

Assignees

华南理工大学
广东新创意科技有限公司

Dates

Publication Date: 20260508
Application Date: 20241113

Claims (6)

1. An intelligent heat pipe bending method is characterized in that an intelligent heat pipe bending system is adopted, and comprises a three-dimensional model identification module, a process parameter calculation module, a pipe collision detection module, an automatic pipe bending machine module, a three-dimensional feature extraction module and a parameter compensation calculation module; The three-dimensional model identification module is used for extracting a first characteristic parameter from the digitalized first bent pipe three-dimensional model and sending the first characteristic parameter to the process parameter calculation module; the process parameter calculation module is used for calculating process parameters required by bending the heat pipe according to the first characteristic parameters and sending the process parameters to the pipe collision detection module; The pipe collision detection module is used for carrying out pipe collision interference detection according to the technological parameters required by bending the heat pipe, and outputting the technological parameters to the automatic pipe bending machine module after the detection is qualified; the automatic pipe bending machine module is used for carrying out pipe bending operation on the heat pipe to be processed according to the technological parameters; the three-dimensional feature extraction module is used for constructing a second bent pipe three-dimensional model according to the bent pipe processed by the automatic bent pipe machine module, extracting second feature parameters from the second bent pipe three-dimensional model and sending the second feature parameters to the parameter compensation calculation module; The parameter compensation calculation module is used for comparing the first characteristic parameter with the second characteristic parameter, carrying out compensation optimization on the technological parameter if the comparison result is out of the error range, and storing the technological parameter if the comparison result is in the error range; Comprises the steps of, The three-dimensional model identification module extracts a first characteristic parameter from the digitalized first bent pipe three-dimensional model and sends the first characteristic parameter to the process parameter calculation module; the process parameter calculation module calculates process parameters required by bending the heat pipe according to the first characteristic parameters and sends the process parameters to the pipe collision detection module; The pipe collision detection module performs pipe collision interference detection according to the technological parameters required by bending the heat pipe, and outputs the technological parameters to the automatic pipe bending machine module after the detection is qualified; the automatic pipe bending machine module is used for carrying out pipe bending operation on the heat pipe to be processed according to the technological parameters; The three-dimensional feature extraction module constructs a second bent pipe three-dimensional model according to the bent pipe processed by the automatic bent pipe machine module, extracts second feature parameters from the second bent pipe three-dimensional model and sends the second feature parameters to the parameter compensation calculation module; the parameter compensation calculation module compares the first characteristic parameter with the second characteristic parameter, compensates and optimizes the technological parameter if the comparison result is out of the error range, and saves the technological parameter if the comparison result is in the error range; The process parameter calculation module comprises a pipe bending process parameter database which stores data of plastic forming quality of various types of heat pipe bent pipes under different process parameter combinations, wherein the process parameters required by bending the heat pipe are obtained in a mode that in the process parameter calculation module, data preprocessing is carried out on first characteristic parameters according to a pipe bending limit forming theory, and then the process parameters required by bending the heat pipe are output by searching a mapping relation between the bent pipe bending process parameters and the plastic forming quality of the bent pipes stored in the pipe bending process parameter database through an empirical formula reasoning; The second characteristic parameters are obtained by constructing a second three-dimensional model of the elbow by the three-dimensional characteristic extraction module on the basis of a binocular structured light technology on the basis of the elbow acquisition image processed by the automatic elbow machine module, carrying out coordinate calculation on the corrected second elbow three-dimensional model to obtain elbow point cloud data, and carrying out characteristic extraction on the elbow point cloud data to obtain second characteristic parameters of the elbow; The pipe collision interference detection comprises the steps of generating a heat pipe surrounding body according to technological parameters required by bending of the heat pipe, selecting characteristic points of the heat pipe surrounding body, carrying out matrix transformation on movement of the heat pipe in the machining process, and detecting whether interference exists between the heat pipe and the heat pipe surrounding body.
2. The method for bending a tube according to claim 1, wherein the digitized three-dimensional model of the first bent tube is obtained by converting a two-dimensional engineering drawing of the finished heat tube into the digitized three-dimensional model of the first bent tube by using a heat tube information reduction module.
3. The method of claim 1, wherein in the tube collision interference detection, if collision interference exists between the heat tube and the heat tube surrounding body, the process parameters are redesigned, and the avoidance motion is increased.
4. The method of claim 1, wherein the intelligent heat pipe bending system further comprises a heat pipe information reduction module, wherein the heat pipe information reduction module is used for converting a two-dimensional engineering drawing of the finished heat pipe into a digitized first bent pipe three-dimensional model and transmitting the digitized first bent pipe three-dimensional model to the three-dimensional model identification module.
5. The method of claim 1, wherein the intelligent heat pipe bending system further comprises a software machine communication module, and the software machine communication module is respectively connected to the process parameter calculation module, the automatic pipe bending machine module and the parameter compensation calculation module.
6. The method of claim 1, wherein the intelligent heat pipe bending system further comprises a three-dimensional model display module, and the three-dimensional model display module is respectively connected to the three-dimensional model identification module and the three-dimensional feature extraction module and is used for displaying and comparing the first bent pipe three-dimensional model with the second bent pipe three-dimensional model.

Description

Intelligent heat pipe bending system and method Technical Field The invention relates to the technical field of heat pipe bending and forming manufacturing, in particular to an intelligent heat pipe bending system and method. Background With the continued shrinkage of electronic chip size and increased device density, heat dissipation problems have become increasingly serious. The heat pipe is used as a high-efficiency heat conduction element and becomes a key technology for solving the heat dissipation problem. The manufacturing process flow of the heat pipe involves a plurality of steps, wherein the bending process is one of key steps in the manufacturing of the heat pipe, and is generally realized by adopting a winding forming technology. The parameter setting of the process is influenced by the structural characteristics of the pipe and bending forming parameters. At present, in the bending production link of the heat pipe, although the numerical control bending machine is gradually replacing the traditional manual bending mode, the manual bending still occupies a considerable proportion. This situation limits the improvement of production efficiency and product quality, and also results in a shortage of automation level and an increase of production cost. In addition, as the variety of heat pipes increases and market demand expands, the demands on the shape of the heat pipes also become more diverse and complex. In determining the bending process parameters, operators generally need to rely on personal experience and knowledge to obtain appropriate process parameters and numerical control programs through repeated trial and error and inspection of the gauge. However, this practice of relying on manual extraction of bending parameters and shaping methods has not met the requirements of modern high-efficiency production. Therefore, it is necessary to optimize the bending process of the heat pipe to improve the production efficiency and the product quality, reduce the cost, and meet the market demand for heat pipes with complex shapes. Disclosure of Invention Aiming at the problems in the prior art, the invention aims to provide the intelligent heat pipe bending system and the intelligent heat pipe bending method, the design of heat pipe bending process parameters does not depend on experience of operators, the consistency and the reliability of products can be ensured, and the heat pipe is formed without using a detection tool for measurement. In order to achieve the above purpose, the invention adopts the following technical scheme: an intelligent heat pipe bending system comprises a three-dimensional model identification module, a process parameter calculation module, a pipe collision detection module, an automatic pipe bending machine module, a three-dimensional feature extraction module and a parameter compensation calculation module; The three-dimensional model identification module is used for extracting a first characteristic parameter from the digitalized first bent pipe three-dimensional model and sending the first characteristic parameter to the process parameter calculation module; the process parameter calculation module is used for calculating process parameters required by bending the heat pipe according to the first characteristic parameters and sending the process parameters to the pipe collision detection module; The pipe collision detection module is used for carrying out pipe collision interference detection according to the technological parameters required by bending the heat pipe, and outputting the technological parameters to the automatic pipe bending machine module after the detection is qualified; the automatic pipe bending machine module is used for carrying out pipe bending operation on the heat pipe to be processed according to the technological parameters; the three-dimensional feature extraction module is used for constructing a second bent pipe three-dimensional model according to the bent pipe processed by the automatic bent pipe machine module, extracting second feature parameters from the second bent pipe three-dimensional model and sending the second feature parameters to the parameter compensation calculation module; The parameter compensation calculation module is used for comparing the first characteristic parameter with the second characteristic parameter, compensating and optimizing the technological parameter if the comparison result is out of the error range, and storing the technological parameter if the comparison result is in the error range. Further, the system also comprises a heat pipe information reduction module, wherein the heat pipe information reduction module is used for converting the two-dimensional engineering drawing of the finished heat pipe into a digital first bent pipe three-dimensional model and sending the digital first bent pipe three-dimensional model to the three-dimensional model identification module. Further, the system also comprises