WO2015096511A1 - Intelligent numerical control machining programming system and method for aircraft structural parts - Google Patents

Intelligent numerical control machining programming system and method for aircraft structural parts Download PDF

Info

Publication number
WO2015096511A1
WO2015096511A1 PCT/CN2014/086105 CN2014086105W WO2015096511A1 WO 2015096511 A1 WO2015096511 A1 WO 2015096511A1 CN 2014086105 W CN2014086105 W CN 2014086105W WO 2015096511 A1 WO2015096511 A1 WO 2015096511A1
Authority
WO
WIPO (PCT)
Prior art keywords
machining
tool
processing
unit
programming
Prior art date
Application number
PCT/CN2014/086105
Other languages
French (fr)
Chinese (zh)
Inventor
杜宝瑞
初宏震
陈树林
赵丹
Original Assignee
沈阳飞机工业(集团)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CN201310723872.6A priority Critical patent/CN103699055B/en
Priority to CN2013107238726 priority
Application filed by 沈阳飞机工业(集团)有限公司 filed Critical 沈阳飞机工业(集团)有限公司
Publication of WO2015096511A1 publication Critical patent/WO2015096511A1/en

Links

Images

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/18Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/4097Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by using design data to control NC machines, e.g. CAD/CAM

Abstract

An intelligent numerical control machining programming system and method for aircraft structural parts. The system employs an existing CAD/CAM system as a platform and comprises five major modules including a model detection module (2), a process scheme automatic generation module (3), a process resource and knowledge library management model (1), an automatic programming subsystem module (4) and a numerical control program intelligent optimization module (5). Being set up upon a three-dimensional model, the system gives a comparatively systematical and accurate reflection of and also support to the professional procedures of the numerical control machining programming for aircraft structural parts, and therefore, man-machine interaction operations required during the course of technological preparation and programming process can be reduced remarkably, unstable programs, prolonged programming periods and other such problems resulting from universal platform and human experience-based interactive programming are effectively solved, the efficiency and quality of numerical control machining preparation and programming can be enhanced significantly, and the levels of professionalism and intelligence of the CAD/CAM system are raised.

Description

飞机结构件智能数控加工编程系统及方法Intelligent numerical control machining programming system and method for aircraft structural parts 技术领域Technical field
本发明涉及一种飞机结构件智能数控加工编程系统及方法,应用于飞机大型整体结构件的数控加工程序编制,提高数控程序编制的自动化和智能化水平,以缩短飞机结构件数控编程周期并提高结构件的加工效率。该技术发明属于飞机数字化制造技术领域。The invention relates to an intelligent numerical control machining programming system and method for an aircraft structural component, which is applied to the NC machining program programming of a large-scale integral structural part of an aircraft, improves the automation and intelligent level of the NC programming, and shortens the numerical control programming cycle of the aircraft structural component and improves the cycle. Processing efficiency of structural parts. This technical invention belongs to the field of aircraft digital manufacturing technology.
背景技术Background technique
数控编程技术的发展已有五十多年的历史,它是随世界第一台三坐标数控铣床问世而诞生并迅速发展起来,经历了由手工编程发展至数控语言自动编程再上升为基于三维几何模型的数控自动编程的过程。纵观其发展,推动这一变迁的是生动的生产实践对数控加工编程技术的要求。目前,经过国内外专家学者广泛和深入研究,数控加工编程技术已得到了显著的发展,取得了丰硕成果,为进一步提高编程的自动化水平,目前,数控编程技术已经逐步进入智能数控编程的发展阶段,将形成智能数控编程。The development of CNC programming technology has been more than 50 years old. It was born and developed rapidly with the advent of the world's first three-axis CNC milling machine. It has evolved from manual programming to automatic programming of CNC language and then to 3D geometry. The process of numerical control automatic programming of the model. Throughout its development, it is the requirements of vivid production practice for CNC machining programming technology to promote this change. At present, through extensive and in-depth research by experts and scholars at home and abroad, CNC machining programming technology has achieved remarkable development and achieved fruitful results. To further improve the automation level of programming, at present, CNC programming technology has gradually entered the development stage of intelligent numerical control programming. , will form intelligent CNC programming.
计算机、编程以及高速切削加工等相关技术的快速发展和广泛应用推动了飞机结构件制造技术的发展,在现代飞机结构中越来越多地采用经由数控加工而成的整体零件来代替装配式组合件,减轻了飞机自重,缩短了飞机结构件的加工和装配时间,并且有效提高了飞机结构的整体性能。但是,整体结构件具有结构复杂、制造精度要求高且加工难度大等特点,当前在通用CAM平台中基于三维几何模型的工艺准备及交互数控编程方式已成为影响飞机结构件制造周 期及质量的瓶颈因素之一。究其根源,主要有以下两个方面:一是工艺准备及编程技术智能化程度低,过分依赖于程编人员在特定生产环境下长期积累的经验知识,编程不规范并且程序质量不稳定;二是编程过程自动化程度低,需要通过人机交互方式设置大量的加工操作参数,重复工作量大,编程周期长。The rapid development and wide application of related technologies such as computer, programming and high-speed machining have promoted the development of aircraft structural parts manufacturing technology. In modern aircraft structures, more and more integral parts processed by numerical control are used instead of assembled assemblies. It reduces the weight of the aircraft, shortens the processing and assembly time of the aircraft structural parts, and effectively improves the overall performance of the aircraft structure. However, the overall structural components have the characteristics of complex structure, high manufacturing precision and high processing difficulty. Currently, the process preparation and interactive numerical control programming based on the three-dimensional geometric model in the general CAM platform have become the influence of the aircraft structural parts manufacturing week. One of the bottleneck factors of quality and quality. The root causes are as follows: First, the process preparation and programming technology are less intelligent, and rely too much on the long-term accumulated experience of the programmers in a specific production environment. The programming is not standardized and the program quality is unstable; The programming process has a low degree of automation, and a large number of processing operation parameters need to be set by human-computer interaction, the workload is large, and the programming cycle is long.
这种单纯依靠程编人员的经验采用交互方式指定加工区域和设置加工参数已远远满足不了生产实践对数控加工程序编制快速、便捷的需求。因此旨在提高自动化和智能化程度的智能数控编程技术引起学术界和工业界的广泛关注和高度重视。方法是将人工智能、神经网络和专家系统等智能技术引入到现有的基于三维几何模型的数控加工自动编程系统中,使其具有一定的识别、分析、判断和决策能力,能够根据零件和毛坯的几何模型自动识别加工特征模型,并据此制定合理的加工工艺流程,确定和设置工作选项,最大程度简化操作过程。目标是使人从繁重的重复性工作中解放出来,由系统综合考虑毛坯、零件、刀具和机床等各种因素,自动完成从毛坯到产品整个加工过程的数控加工程序编制,从而极大地提高程序编制的效率和质量。This simple relying on the experience of the programmers to specify the processing area and set the processing parameters interactively has far met the rapid and convenient requirements for the NC machining program. Therefore, intelligent numerical control programming technology aimed at improving the degree of automation and intelligence has attracted extensive attention and attention from academia and industry. The method is to introduce intelligent technology such as artificial intelligence, neural network and expert system into the existing automatic machining system based on 3D geometric model, which has certain ability of recognition, analysis, judgment and decision making, which can be based on parts and blanks. The geometric model automatically identifies the machining feature model and, based on this, develops a rational machining process, determines and sets work options, and simplifies the process. The goal is to free people from heavy and repetitive work. The system comprehensively considers various factors such as blanks, parts, tools and machine tools, and automatically completes the NC machining program from the blank to the whole process of the product, thus greatly improving the program. The efficiency and quality of the compilation.
然而,自动化与智能化数控加工编程尚处于研究和探索阶段,需要解决的问题还很多,有待于进一步的深入研究。学术界研究热点主要包括加工特征识别、特征优化排序、刀具选取、加工参数优化选取、刀具运动轨迹计算、5轴加工刀轴方向控制以及仿真验证等方面。众多研究人员已经取得了一定的成果,R.B.Karadkar等在1996年研究并开发了包含基于特征的2.5轴零件工艺规划设计系统,实现2.5轴零件工艺的自动规划,为后续的CAM自动化编程提供基础。Huikang K.Miao等在IDEAS平台进行二次开发实现了基于加工特征的工艺规划,有效地实现了CAD/CAPP/CAM的集成,但是该系统也只适用于2.5轴零件。 为提高编程系统的自动化程度,Millan k.Yeung将人工智能引入到编程系统中,通过加工特征的自动识别及刀具的优化选取,开发了智能工艺规划系统,并且系统的柔性化、简单化便于新知识、新工艺的扩展。另外,为解决由于现代机械产品复杂程度的逐步增加而导致工艺编程过程繁琐、复杂等问题,Ulrich Berger等将基于知识的加工特征作为工艺过程的基本元素,以减少工艺时间为目标,采用图的方式描述及优化工艺过程,并在CATIA上进行实现。各CAM公司也紧随其后陆续在各自的数控编程系统中引入智能技术,推出具有部分智能的CAM系统,如FeatureCAM系统和ESPRIT系统,这两个系统均基于特征及知识、使用自动特征识别技术的全功能软件,特征和知识库技术的使用,使得零件加工编程更方便、更简单,极大地缩短了加工编程时间。但目前该类系统还需要较多的人工交互操作,并且不适用复杂零件,离实际应用尚有一段距离。However, automation and intelligent CNC machining programming are still in the research and exploration stage, and there are still many problems to be solved, which need further research. The academic research hotspots mainly include processing feature recognition, feature optimization sequencing, tool selection, optimization of machining parameters, tool motion path calculation, 5-axis machining tool axis direction control and simulation verification. Many researchers have achieved certain results. R.B.Karadkar et al. studied and developed a feature-based 2.5-axis part process planning and design system in 1996 to realize the automatic planning of 2.5-axis part process, providing a basis for subsequent CAM automation programming. Huikang K.Miao et al. carried out secondary development on the IDEAS platform to realize process planning based on machining features, effectively implementing CAD/CAPP/CAM integration, but the system is also only applicable to 2.5-axis parts. In order to improve the automation of the programming system, Millan k.Yeung introduced artificial intelligence into the programming system. Through the automatic recognition of the machining features and the optimization of the tool selection, the intelligent process planning system was developed, and the system was flexible and simplified. The expansion of knowledge and new processes. In addition, in order to solve the cumbersome and complicated process programming process due to the gradual increase of the complexity of modern mechanical products, Ulrich Berger et al. use the knowledge-based processing features as the basic elements of the process, aiming at reducing the process time, using the map Ways to describe and optimize the process and implement it on CATIA. CAM companies are also following the introduction of intelligent technology in their respective CNC programming systems, launching partially intelligent CAM systems, such as the FeatureCAM system and the ESPRIT system, both based on features and knowledge, using automatic feature recognition technology. The use of full-featured software, features and knowledge base technology makes part programming easier and simpler, greatly reducing machining programming time. However, at present, such systems require more manual interactions, and complex parts are not applicable, and there is still a long distance from the actual application.
发明内容Summary of the invention
为了解决上述存在的技术问题,本发明提供一种飞机结构件智能数控加工编程系统(简称INCPro),根据工艺方案驱动飞机结构件的智能编程,实现了编程的智能化、规范化和自优化,编制的程序高度符合工艺要求,并能体现编程员的思想。In order to solve the above-mentioned technical problems, the present invention provides an intelligent numerical control machining programming system for aircraft structural parts (INCPro), which drives intelligent programming of aircraft structural parts according to a process scheme, and realizes intelligent, standardized and self-optimized programming. The program is highly compliant with the process requirements and reflects the programmer's thinking.
本发明的目的是通过下述技术方案实现的:一种飞机结构件智能数控加工编程系统,该系统以CAD/CAM系统为平台,包括工艺资源与知识库管理模块及自动编程子系统,其特征在于:系统还包括模型检测模块、工艺方案自动生成模块、及数控程序智能优化模块;The object of the present invention is achieved by the following technical solution: an intelligent numerical control machining programming system for aircraft structural parts, the system adopts CAD/CAM system as a platform, including process resource and knowledge base management module and automatic programming subsystem, and its characteristics It is: the system further includes a model detection module, a process plan automatic generation module, and a numerical control program intelligent optimization module;
所述的CAD/CAM系统平台,为INCPro提供平台支撑,系统首先在该平台上建立飞机结构件的三维零件模型及毛坯模型,为系统提供基础输入数据;此外, 根据自动编程模块所构建的加工单元,应用该平台的“数控加工”模块自动生成加工操作树并进行刀轨计算、加工仿真及后置处理,实现数控加工文件的自动生成;The CAD/CAM system platform provides platform support for INCPro. The system first establishes a three-dimensional part model and a blank model of the aircraft structural part on the platform to provide basic input data for the system; According to the machining unit constructed by the automatic programming module, the "CNC machining" module of the platform is automatically used to automatically generate the machining operation tree and perform tool path calculation, machining simulation and post processing to realize automatic generation of NC machining files;
所述的工艺资源与知识库管理模块,为系统提供基础支撑数据、支撑数据与其他模块进行数据交换的接口,以及支撑数据库的管理功能;其中,支撑数据库包括工艺知识库、机床参数库、工件材料库、刀具参数及材料库、数控加工切削参数库、工艺方案模板库及其他资源库;其次,通过建立其他模块与支撑数据库的数据接口,实现不同模块间的数据传输、调用与管理,完成支撑数据库与整个INCPro的连接,实现数据资源的共享与管理;此外,支撑数据库的管理包括各种支撑数据的查询、删除、插入、修改、保存以及推理,方便各种支撑数据的查看与更新;The process resource and the knowledge base management module provide a basic support data for the system, an interface for supporting data exchange with other modules, and a management function for supporting the database; wherein the support database includes a process knowledge base, a machine tool parameter library, and an artifact Material library, tool parameters and material library, CNC machining cutting parameter library, process plan template library and other resource libraries; secondly, through the establishment of other modules and data interfaces supporting the database, data transmission, calling and management between different modules is completed. Support the connection between the database and the entire INCPro to realize the sharing and management of data resources; in addition, the management of the supporting database includes the query, deletion, insertion, modification, preservation and reasoning of various supporting data to facilitate the viewing and updating of various supporting data;
所述的模型检测模块,负责对零件模型进行自动化检测,具体包括:(1)零件模型设计错误:设计的零件模型中包含了实际产品不存在的结构,包括残留体、窄缝;(2)标注信息不完整:根据MBD模型定义标准,自动识别零件模型中的几何和非几何信息是否完整;(3)结构工艺性不足:根据已有的工艺资源(包括刀具、工装、机床等)及工艺方法,自动检测零件模型中存在的工艺性不好甚至完全不可加工的结构;实现对零件模型正确性、工艺性的自动审查;根据审查结果,提示问题的类型、位置及修改的方法,并且针对一些常见错误进行自动修改,以该方法保证零件模型的正确性;The model detection module is responsible for automatic detection of the part model, and specifically includes: (1) part model design error: the designed part model contains structures that do not exist in the actual product, including residual bodies and narrow slits; (2) Incomplete labeling information: Automatically identify geometric and non-geometric information in the part model according to the MBD model definition criteria; (3) Insufficient structural process: based on existing process resources (including tools, tooling, machine tools, etc.) and processes The method automatically detects the structure of the part model which is not good or even completely unworkable; realizes the automatic review of the correctness and processability of the part model; according to the review result, prompts the type, location and modification method of the problem, and Some common errors are automatically modified to ensure the correctness of the part model.
所述的工艺方案自动生成模块,为实现工艺过程驱动的数控程序自动生成提供宏观的工艺方案,其中工艺方案采用多叉树表示,包括零件、机床、工位、工序、工步、程序、刀具、特征八级节点,可以描述宏观的加工工艺过程;通 过工艺方案自动生成模块建立工艺方案模板库,对现有的飞机结构件进行分类并总结结构件的一般工艺流程,针对每类典型结构件建立了加工方案模板,包括机床、工位、工序、工步;然后,基于加工特征的制造资源选取方法选取机床、刀具、工装资源,并与加工方案模板相融合,自动生成飞机结构件的数控加工工艺方案;The process scheme automatically generates a module, and provides a macroscopic process plan for automatically generating a process-driven NC program, wherein the process plan is represented by a multi-fork tree, including parts, machine tools, workstations, processes, steps, programs, tools. , characteristic eight-level node, can describe the macroscopic processing process; The process plan automatic generation module establishes the process plan template library, classifies the existing aircraft structural parts and summarizes the general process flow of the structural parts, and establishes a processing plan template for each type of typical structural parts, including machine tools, stations, processes, Then, based on the manufacturing feature selection method of the processing feature, the machine tool, the tool, the tooling resource are selected, and the processing plan template is integrated, and the NC machining process plan of the aircraft structural part is automatically generated;
所述的自动编程子系统,是飞机结构件智能编程的核心模块,主要包含:(1)自动特征识别:根据飞机结构件的三维几何模型和毛坯模型,采用分层特征识别方法进行零件的特征识别,获取零件所有的加工特征,并以树状结构形式存储特征识别结果;(2)工艺方案智能推理:根据零件类型、加工侧个数、毛坯类型及特征识别结果等条件,结合工艺资源与知识库模块中的支撑数据,进行智能知识推理从工艺方案模板库中自动推荐零件的加工方案模板;(3)刀具自动选取:基于特征的几何参数及加工阶段选取加工刀具,例如基于切削体积比的粗加工刀具选取;(4)加工单元智能构造与排序:将刀具融合到加工方案模板中形成完整的工艺方案,再由工艺方案描述的工艺过程驱动加工单元自动构造,即根据刀具的可加工能力,基于加工过程中的残留区域提取出每把刀具可加工的区域、智能推理选取最优加工操作并且计算出加工操作所需的几何参数,形成每把刀具的加工单元序列,由工艺方案与加工单元相融合构成完整的数控加工单元序列;(5)加工操作自动生成:将数控加工单元序列自动映射到CAD/CAM系统的“数控加工”模块中的加工操作树,并自动设置每个加工操作的几何参数、策略参数、刀具参数、速度参数以及进退刀连接,并进行刀轨计算和加工仿真;The automatic programming subsystem is a core module for intelligent programming of aircraft structural components, and mainly comprises: (1) automatic feature recognition: according to the three-dimensional geometric model and the blank model of the aircraft structural member, the feature of the component is determined by the hierarchical feature recognition method. Identify, obtain all the processing features of the part, and store the feature recognition result in the form of tree structure; (2) Intelligent reasoning of the process plan: according to the type of part, the number of processing side, the type of blank and the result of feature recognition, combined with process resources and Supporting data in the knowledge base module, intelligent knowledge reasoning automatically recommending the machining plan template of the part from the process template template library; (3) automatic tool selection: selecting the machining tool based on the geometric parameters of the feature and the machining stage, for example based on the cutting volume ratio (4) intelligent construction and sorting of the machining unit: the tool is integrated into the machining plan template to form a complete process plan, and then the process described by the process plan drives the machining unit to be automatically constructed, that is, according to the tool. Ability to extract each based on the residual area of the process With machinable area, intelligent reasoning, selecting the optimal machining operation and calculating the geometric parameters required for the machining operation, forming a sequence of machining units for each tool, and combining the process plan with the machining unit to form a complete sequence of NC machining units; 5) Automatically generate machining operations: automatically map the NC machining unit sequence to the machining operation tree in the “CNC machining” module of the CAD/CAM system, and automatically set the geometric parameters, strategy parameters, tool parameters and speed parameters of each machining operation. And the advance and retreat knife connection, and the tool rail calculation and machining simulation;
所述的数控程序智能优化模块负责对智能编程过程中选取的资源、安排的 加工顺序等进行优化,具体为:(1)刀具选取优化:采用基于切削体积比的粗加工刀具选取方法,根据给定的刀具库列表,从刀具库中依次按照直径大小计算飞机结构件中每把刀具可切削的所有加工区域体积,当存在一把刀具可切削的体积大于80%的待加工区域体积,则认为该把刀具为合适的粗加工刀具;另外,以最短加工时间为优化目标,对转角加工和侧壁精加工刀具进行优化,对符合条件的转角加工特征和侧壁内外形加工选取多种刀具方案进行加工,通过计算不同方案下刀具的加工时间确定转角特征和侧壁内外形加工特征的刀具,实现转角特征和侧壁精加工刀具的优化选取;(2)粗加工分层优化:针对飞机结构件中多下陷结构,以实现分层粗加工时间最少为前提,保证在粗加工后每个槽腔特征的底部腹板可采用精加工腹板刀具一刀完成精加工的前提下,采用遗传算法对分层面进行智能优化,实现粗加工分层面的最少,以提高粗加工效率;(3)加工单元路径优化:分宏观层和刀具层两个层面进行优化;在宏观层,根据工艺方案描述的工艺过程,将所有的数控加工单元按照宏观的工艺过程(包括机床、工位、工序、工步及刀具)进行自动排序;在刀具层,对每把刀具关联的加工单元进行四级分组,首先将刀具关联的加工单元按照工步类型的不同分成多个二级单元组(包括两种类型:补加工单元组和目标加工单元组,其中补加工单元组在当前工步下对之前工步的补加工单元集,而目标加工单元则是当前工步指定要加工的单元集),并将补加工单元组先于目标加工单元组进行加工;其次,将补加工单元组根据加工单元所在工步的类型对其进行再次分组,形成三级单元组,并按照工艺流程顺序对这些三级单元组进行依次排序;再有,对三级单元组进行自上而下的整体分层排序,形成四级单元组;最后,以加工路径最短为优化目标,对四级单元组内的加工单元采用模拟退火算法进行路径 优化排序,实现四级单元组内加工路径的优化。采用这种方式可以实现工艺方案驱动的加工单元优化排序,综合考虑了几何级和工艺级的排序,可以显著提高排序效率和质量。The numerical control program intelligent optimization module is responsible for selecting resources and scheduling in the intelligent programming process. The machining sequence is optimized, for the following: (1) Tool selection optimization: The roughing tool selection method based on the cutting volume ratio is used. According to the given tool library list, the aircraft structure is calculated from the tool library according to the diameter. The volume of all machining areas that can be cut by the tool is considered to be a suitable roughing tool when there is a volume of the tool to be cut that is more than 80% of the volume to be machined. In addition, the shortest machining time is the optimization target. Optimize the corner machining and sidewall finishing tools, select a variety of tooling schemes for the matching corner machining features and sidewall contour machining, and determine the corner characteristics and sidewall profile by calculating the machining time of the tool under different schemes. The tool with machining characteristics realizes the optimization of the corner feature and the side wall finishing tool; (2) The roughing layering optimization: for the multi-sag structure in the aircraft structural parts, to achieve the minimum layering roughing time, the premise is guaranteed The bottom web of each cavity feature after machining can be finished with a finishing web cutter Under the genetic algorithm, the sub-level is intelligently optimized to achieve the minimum of rough machining to improve roughing efficiency; (3) machining unit path optimization: optimization at two levels: macro layer and tool layer; According to the process described in the process plan, all CNC machining units are automatically sorted according to the macro process (including machine tools, stations, processes, steps and tools); at the tool level, the machining units associated with each tool are Four-level grouping, firstly divide the machining unit associated with the tool into multiple secondary unit groups according to the type of work step (including two types: supplementary machining unit group and target machining unit group, wherein the machining unit group is under the current work step) The set of processing units for the previous step, and the target processing unit is the set of units to be processed by the current step, and the processing unit group is processed before the target processing unit group; secondly, the processing unit group is based on The type of the step in which the processing unit is located is grouped again to form a three-level unit group, and these three-level singles are processed in the order of the process flow. The group is sorted in order; further, the top-down overall hierarchical ordering of the three-level unit group is performed to form a four-level unit group; finally, the processing path is minimized as the optimization target, and the processing unit in the four-level unit group is adopted. Simulated annealing algorithm for path Optimize the sorting to optimize the processing path within the four-level unit group. In this way, the process unit-driven processing unit can be optimized and sorted, and the geometric and process level sorting can be comprehensively considered, which can significantly improve the sorting efficiency and quality.
一种前述飞机结构件智能数控加工编程系统的实现方法,具体步骤如下:An implementation method of the aforementioned intelligent numerical control machining programming system for aircraft structural parts, the specific steps are as follows:
步骤1):进入CAD/CAM平台的“数控加工”模块,并进入“飞机结构件智能数控加工编程系统”,载入飞机结构件三维模型和毛坯模型;Step 1): Enter the “CNC Machining” module of the CAD/CAM platform, and enter the “Intelligent NC Machining Programming System for Aircraft Structural Components” to load the 3D model and the blank model of the aircraft structural components;
步骤2):进行零件基本信息的设定,具体有:(1)零件的类型:壁板、框、梁、肋、接头等;(2)加工侧个数:包括单面、双面以及多面;(3)毛坯类型:包括板材、型材、锻件以及铸件;Step 2): Set the basic information of the parts, including: (1) Type of parts: siding, frame, beam, rib, joint, etc.; (2) Number of processing sides: including single-sided, double-sided and multi-sided (3) Type of blank: including plates, profiles, forgings and castings;
步骤3):进入模型检测模块,结合零件模型工艺性对零件模型进行质量检测,并对不能满足实际工艺要求的局部错误结构进行相应的修正,使零件模型满足加工工艺要求,以保证输入零件模型的正确性;Step 3): Enter the model detection module, combine the part model processability to perform quality inspection on the part model, and correct the local error structure that cannot meet the actual process requirements, so that the part model meets the processing requirements to ensure the input part model. Correctness
步骤4):进入自动编程模块,首先需要根据步骤2)中设定的零件类型与加工侧信息为每个加工侧设定对应的加工坐标系,然后在每个加工坐标系下对零件所有的拓扑面进行面类型识别,以此为基础识别埋头孔、沉头孔、椎孔、圆柱直孔等孔结构,并删除横向孔和斜向孔,便于特征识别的顺利实现;在每个加工坐标系下,采用基于分层加工思想的广义槽特征识别方法对零件进行加工特征识别,即创建分层层面与零件实体求交并获取出每层的交线环及其内外环关系,由该关系确定每层的加工区域,然后提取出交线环中边线依赖的零件拓扑面,再将交线环中所有边线依赖的面进行组合,进而组成广义槽特征,再根据纵向面之间的关联关系构建出飞机结构件广义槽特征结构树;Step 4): To enter the automatic programming module, firstly, according to the part type and processing side information set in step 2), the corresponding machining coordinate system is set for each machining side, and then the parts are all in each machining coordinate system. The topological surface is used for face type recognition. Based on this, the hole structure such as countersunk hole, countersunk hole, vertebral hole and cylindrical straight hole are identified, and the transverse hole and the oblique hole are deleted, which facilitates the smooth realization of feature recognition; Under the system, the generalized groove feature recognition method based on the layered machining idea is used to identify the machining features of the parts, that is, to create the layered layer and the part entity to intersect and obtain the intersection line of each layer and its inner and outer ring relationship. Determine the processing area of each layer, and then extract the topological surface of the part dependent on the edge line in the intersection ring, and then combine all the faces dependent on the edge line in the intersection ring to form the generalized groove feature, and then according to the relationship between the longitudinal faces Constructing a generalized trough feature tree of aircraft structural members;
步骤5):经过步骤4)中的特征识别后,人工交互选择是否载入现有的相 似零件工艺方案,如果选择“是”则从加工方案库中智能搜索相似零件的工艺方案,再由人工通过交互的方式优化选取;否则进入工艺方案自动生成模块,根据工艺经验知识和零件类型进行知识推理,确定当前零件的工艺方案模板,包括机床、工位、工序、工步等,再基于加工特征自动选取刀具,确定各加工阶段过程中加工不同特征所需要的刀具参数和切削参数,并将加工方案模板和刀具选取结果进行合并,生成完整的工艺方案;通过上述方式构建工艺方案后,形成包含七级节点的树状结构,其中七级节点具体为:零件节点、机床节点、加工侧节点、工序节点、工步节点、程序节点及刀具节点;人工可交互修改并且进行有效性检查,最后确认保存;如果零件为首次加工,其工艺方案将自动添加到加工方案库中,以供下次相似零件的调用,保证方案的统一性和规范性;Step 5): After the feature recognition in step 4), manually interact to select whether to load the existing phase Like the part process plan, if you select “Yes”, the process plan of intelligently searching similar parts from the processing plan library, and then manually optimize the selection by interaction; otherwise, the process plan automatically generates modules, according to the process experience knowledge and part type. Knowledge reasoning, determine the template of the current part of the process plan, including machine tools, workstations, processes, work steps, etc., and then automatically select the tool based on the machining features to determine the tool parameters and cutting parameters required to process different features during each machining stage, and The processing plan template and the tool selection result are combined to generate a complete process plan; after the process plan is constructed by the above method, a tree structure comprising seven nodes is formed, wherein the seven-level node is specifically: part node, machine node, and processing side Nodes, process nodes, step nodes, program nodes and tool nodes; manually can be interactively modified and checked for validity, and finally confirmed to save; if the part is first processed, its process plan will be automatically added to the processing plan library for the next Sub-similar parts call, guarantee scheme Uniformity and standardization;
步骤6):再次进入自动编程模块,首先从步骤5)生成的工艺方案中提取出各工步使用的刀具,并基于几何的刀具选取方法,将刀具与加工特征建立匹配关系,保证加工特征在不同的加工阶段有合适的刀具进行加工;然后,根据工艺方案描述的宏观工艺流程以及刀具的可加工能力,并在残留区域实时计算的基础上求解出刀具的可加工区域、优化选取加工操作并计算加工操作所需的几何参数等信息以自动构建加工单元,完成飞机结构件数控加工单元序列的构建;Step 6): Enter the automatic programming module again, first extract the tool used in each step from the process plan generated in step 5), and based on the geometric tool selection method, establish a matching relationship between the tool and the machining feature to ensure that the machining feature is Different processing stages have suitable tools for processing; then, according to the macro process flow described by the process plan and the tool's machinability, and based on the real-time calculation of the residual area, the toolable area can be solved and the machining operation can be optimized. Calculate the geometric parameters and other information required for the machining operation to automatically construct the machining unit, and complete the construction of the NC machining unit sequence of the aircraft structural member;
步骤7):在步骤6)数控加工单元构建过程中,需要进入数控加工智能优化模块,进行粗加工分层优化、加工路径优化等优化工作,实现数控程序的优化;Step 7): In the process of constructing the NC machining unit in step 6), it is necessary to enter the CNC machining intelligent optimization module to perform optimization operations such as roughing layer optimization and processing path optimization to realize the optimization of the NC program;
步骤8):最后,在CAM系统中,自动生成与飞机结构件数控加工单元序列对应的加工操作树,其中加工操作是使用一把刀具、一组加工参数及一条参数 化刀轨所生成的加工程序,将每个加工单元的策略参数、加工参数、几何参数、刀具参数以及加工宏参数分别设置到对应的加工操作中,即可完成加工操作的自动生成,然后再对所有加工操作进行刀轨计算和加工仿真,即完成飞机结构件数控程序的智能编制;最后,通过前后置处理程序将数控加工刀轨转换为相应数控系统的NC代码。Step 8): Finally, in the CAM system, a machining operation tree corresponding to the sequence of the NC machining unit of the aircraft structural member is automatically generated, wherein the machining operation uses a tool, a set of machining parameters and a parameter. The machining program generated by the tool path is set to the corresponding machining operation by setting the strategy parameters, machining parameters, geometric parameters, tool parameters and machining macro parameters of each machining unit, respectively, to complete the automatic generation of the machining operation, and then The tool path calculation and machining simulation are performed for all machining operations, that is, the intelligent programming of the aircraft structural parts NC program is completed; finally, the NC machining tool path is converted into the NC code of the corresponding numerical control system through the front and rear processing program.
本发明的有益效果:相对于目前的交互式数控编程及快速编程而言,本发明着重发展了模型检测模块、工艺方案自动生成模块及数控程序智能优化模块,首先进一步保证了输入到编程系统中的零件模型正确性以及良好的工艺性,可以有效减少自动编程过程中产生的由于模型质量存在问题导致的计算不稳定、结果不准确等问题;其次,采用多叉树结构统一化、抽象化表示工艺方案,将不同飞机结构件的工艺方案做成模板,可以实现工艺的模板化、规范化,另外与基于特征选取的各类制造资源融合后,即可自动生成零件的工艺方案,这种方式生成的工艺方案合理性强,与实际工艺过程高度吻合,并且工艺方案自动生成的效率高;再有,智能优化模块的开发,对数控编程过程中的多个关键阶段进行优化,可实现刀具优化选取、加工路径优化等,可显著提高数控加工程序的质量,大幅提高批量生产飞机结构件的加工效率。The invention has the beneficial effects that compared with the current interactive numerical control programming and rapid programming, the invention focuses on the development of a model detection module, a process plan automatic generation module and a numerical control program intelligent optimization module, which first ensures the input into the programming system. The correctness of the part model and the good processability can effectively reduce the problems of computational instability and inaccurate results caused by problems in the automatic programming process. Secondly, the multi-fork tree structure is unified and abstracted. The process plan, the process plan of different aircraft structural parts is made into a template, which can realize the templating and standardization of the process, and the process plan of automatically generating the parts can be automatically generated after being integrated with various manufacturing resources based on feature selection. The process plan is reasonable, highly consistent with the actual process, and the process plan automatically generates high efficiency; further, the development of the intelligent optimization module optimizes several key stages in the NC programming process, and the tool optimization can be selected. , processing path optimization, etc., can be significantly Quality CNC machining process, greatly improve the processing efficiency of mass production of aircraft structural parts.
附图说明DRAWINGS
图1为本发明飞机结构件智能数控加工编程系统的模式图。1 is a schematic view of an intelligent numerical control machining programming system for an aircraft structural member according to the present invention.
图2为本发明飞机结构件智能数控加工编程系统的总体功能框架。2 is a general functional framework of an intelligent numerical control machining programming system for an aircraft structural member of the present invention.
图3为本发明飞机结构件智能数控加工编程系统的实现流程图。3 is a flow chart showing the implementation of an intelligent numerical control machining programming system for an aircraft structural member according to the present invention.
具体实施方式detailed description
下面结合附图对本发明的实施例进行详细的说明,本实施例是在以本发明 技术方案为前提下进行实施,给出了详细的实施方式和具体的实现过程,但是本发明的保护范围不限于下述实施实例。The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The technical solutions are implemented on the premise, and detailed implementations and specific implementation processes are given, but the scope of protection of the present invention is not limited to the following embodiments.
图1为飞机结构件智能数控加工编程系统(简称INCPro)的模式图,由工艺方案驱动飞机结构件的智能编程,实现了编程的智能化、规范化和自优化,编制的程序高度符合工艺要求,并能体现编程员的思想。其主要思想为:根据分层粗加工方法思想,采用分层特征识别方法识别并构造零件的加工特征,并基于零件包含的加工特征类型及特点智能推理选取零件的工艺方案模板(每个类型的飞机结构件均有各自的工艺方案模板);然后,基于加工特征的几何参数对工艺方案模板中各工序/工步加工的特征选取刀具,并将刀具与工艺方案模板相融合,构造宏观的工艺方案,包括工位、工序、工步及各类加工资源;再采用工艺方案驱动数控加工单元自动构造,在残留模型实时计算的基础上根据刀具的可加工能力自动构建数控加工单元,然后以工艺方案描述的宏观工艺过程驱动加工单元进行智能优化排序以符合工艺及最短路径要求,并将序列化后的加工单元与工艺方案相融合生成数控加工单元序列;最后,将数控加工单元序列映射到现有CAD/CAM数控加工模块,一个加工单元实例化成一个加工操作,由所有的加工操作即可完成加工刀轨计算,并通过后置处理转换为NC代码,最终完成零件数控程序的自动生成;此系统如图2所示以CAD/CAM系统为平台,包括工艺资源与知识库管理①、模型检测②、工艺方案自动生成③、自动编程子系统④、数控程序智能优化⑤等五大模块。Figure 1 is a schematic diagram of the intelligent numerical control machining programming system (INCPro) of the aircraft structural parts. The intelligent programming of the aircraft structural parts is driven by the technological scheme, and the intelligent, standardized and self-optimized programming is realized. The programmed program is highly conformed to the process requirements. And can reflect the programmer's thinking. The main idea is: according to the idea of layered roughing method, the layered feature recognition method is used to identify and construct the machining features of the parts, and the process plan template of the parts is selected based on the type and characteristics of the machining features contained in the parts. Aircraft structural parts have their own process plan templates); then, based on the geometric parameters of the machining features, the tools are selected for each process/work step processing feature in the process plan template, and the tool is integrated with the process plan template to construct a macroscopic process. The scheme includes work station, process, work step and various processing resources; then the process plan is used to drive the automatic construction of the NC machining unit, and based on the real-time calculation of the residual model, the NC machining unit is automatically built according to the tool's machinability, and then the process is The macro process described in the scheme drives the processing unit to intelligently optimize the sorting to meet the process and shortest path requirements, and combines the serialized processing unit with the process plan to generate a sequence of NC machining units. Finally, the NC machining unit sequence is mapped to the present There is CAD/CAM CNC machining module, one plus The unit is instantiated into a machining operation, and the machining tool calculation can be completed by all machining operations, and converted into NC code by post processing, and finally the automatic generation of the part NC program is completed; the system is shown in Fig. 2 as CAD/ The CAM system is a platform, including five major modules: process resource and knowledge base management 1, model detection 2, automatic generation of process plan 3, automatic programming subsystem 4, and intelligent optimization of numerical control program.
其中,所述的CAD/CAM系统平台,为INCPro提供平台支撑,系统首先在该平台上建立飞机结构件的三维零件模型及毛坯模型,为系统提供基础输入数据;此外,根据自动编程模块所构建的加工单元,应用该平台的“数控加工”模块 自动生成加工操作树并进行刀轨计算、加工仿真及后置处理,实现数控加工文件的自动生成;The CAD/CAM system platform provides platform support for INCPro. The system first establishes a three-dimensional part model and a blank model of the aircraft structural part on the platform, and provides basic input data for the system; in addition, according to the automatic programming module Processing unit, applying the "CNC machining" module of the platform Automatically generate machining operation tree and perform tool path calculation, machining simulation and post-processing to realize automatic generation of CNC machining files;
所述的工艺资源与知识库管理模块①,为系统提供基础支撑数据、支撑数据与其他模块进行数据交换的接口,以及支撑数据库的管理功能;其中,支撑数据库包括工艺知识库、机床参数库、工件材料库、刀具参数及材料库、数控加工切削参数库、工艺方案模板库及其他资源库;其次,通过建立其他模块与支撑数据库的数据接口,实现不同模块间的数据传输、调用与管理,完成支撑数据库与整个INCPro的连接,实现数据资源的共享与管理;此外,支撑数据库的管理包括各种支撑数据的查询、删除、插入、修改、保存以及推理,方便各种支撑数据的查看与更新;The process resource and knowledge base management module 1 provides a basic support data for the system, an interface for supporting data exchange with other modules, and a management function for supporting the database; wherein the support database includes a process knowledge base, a machine tool parameter library, Workpiece material library, tool parameters and material library, CNC machining cutting parameter library, process plan template library and other resource libraries; secondly, data transfer, call and management between different modules are realized by establishing data interfaces between other modules and supporting databases. Complete the connection between the supporting database and the entire INCPro to realize the sharing and management of data resources. In addition, the management of the supporting database includes the query, deletion, insertion, modification, saving and reasoning of various supporting data to facilitate the viewing and updating of various supporting data. ;
所述的模型检测模块②主要负责对零件模型进行自动化检测,具体包括:(1)零件模型设计错误:设计的零件模型中包含了实际产品不存在的结构,包括残留体、窄缝;(2)标注信息不完整:根据MBD模型定义标准,自动识别零件模型中的几何和非几何信息是否完整;(3)结构工艺性不足:根据已有的工艺资源(包括刀具、工装、机床等)及工艺方法,自动检测零件模型中存在的工艺性不好甚至完全不可加工的结构;实现对零件模型正确性、工艺性的自动审查;根据审查结果,提示问题的类型、位置及修改的方法,并且针对一些常见错误进行自动修改,以该方法保证零件模型的正确性;The model detection module 2 is mainly responsible for automatic detection of the part model, and specifically includes: (1) part model design error: the designed part model contains structures that do not exist in the actual product, including residual bodies and narrow slits; The annotation information is incomplete: according to the MBD model definition standard, it is automatically recognized whether the geometric and non-geometric information in the part model is complete; (3) the structural process is insufficient: according to the existing process resources (including tools, tooling, machine tools, etc.) The process method automatically detects the structure of the part model that is not good or even completely unworkable; realizes the automatic review of the correctness and processability of the part model; according to the review result, prompts the type, location and modification method of the problem, and Automatically modify some common errors to ensure the correctness of the part model;
所述的工艺方案自动生成模块③,为实现工艺过程驱动的数控程序自动生成提供宏观的工艺方案,其中工艺方案采用多叉树表示,包括零件、机床、工位、工序、工步、程序、刀具、特征八级节点,可以描述宏观的加工工艺过程;该模块包含以下功能:(1)建立了工艺方案模板库:对现有的飞机构件进行分 类并总结出这些结构件的一般工艺流程,并针对每类典型结构件建立了加工方案模板,包括机床、工位、工序、工步;(2)工艺方案自动生成:基于特征的制造资源选取方法选取机床、刀具、工装等资源,并与加工方案模板相融合,自动生成飞机结构件的数控加工工艺方案;The process scheme automatically generates the module 3, and provides a macroscopic process plan for realizing automatic generation of the process-driven NC program, wherein the process plan is represented by a multi-fork tree, including parts, machine tools, workstations, processes, steps, programs, The tool and feature eight-level node can describe the macroscopic machining process; the module contains the following functions: (1) Establish a process plan template library: divide the existing aircraft components Class and summarize the general process flow of these structural parts, and establish a processing plan template for each type of typical structural parts, including machine tools, workstations, processes, and steps; (2) automatic generation of process plans: selection of manufacturing resources based on features The method selects the resources of machine tools, tools, tooling, etc., and integrates with the processing plan template to automatically generate the NC machining process plan of the aircraft structural parts;
所述的自动编程子系统④,是飞机结构件智能编程的核心模块,主要包含:(1)自动特征识别:根据飞机结构件的三维几何模型和毛坯模型,采用分层特征识别方法进行零件的特征识别,获取零件所有的加工特征,并以树状结构形式存储特征识别结果;(2)工艺方案智能推理:根据零件类型、加工侧个数、毛坯类型及特征识别结果等条件,结合工艺资源与知识库模块中的支撑数据,进行智能知识推理从工艺方案模板库中自动推荐零件的加工方案模板;(3)刀具自动选取:基于特征的几何参数及加工阶段选取加工刀具,例如基于切削体积比的粗加工刀具选取;(4)加工单元智能构造与排序:将刀具融合到加工方案模板中形成完整的工艺方案,再由工艺方案描述的工艺过程驱动加工单元自动构造,即根据刀具的可加工能力,基于加工过程中的残留区域提取出每把刀具可加工的区域、智能推理选取最优加工操作并且计算出加工操作所需的几何参数,形成每把刀具的加工单元序列,由工艺方案与加工单元相融合构成完整的数控加工单元序列;(5)加工操作自动生成:将数控加工单元序列自动映射到CAD/CAM系统的“数控加工”模块中的加工操作树,并自动设置每个加工操作的几何参数、策略参数、刀具参数、速度参数以及进退刀连接,并进行刀轨计算和加工仿真;The automatic programming subsystem 4 is a core module for intelligent programming of aircraft structural components, and mainly comprises: (1) automatic feature recognition: according to the three-dimensional geometric model and the blank model of the aircraft structural member, the layered feature recognition method is used for the part Feature recognition, obtain all processing features of the part, and store the feature recognition result in the form of tree structure; (2) Intelligent reasoning of process scheme: combined with process resources according to the type of part, the number of processing side, the type of blank and the result of feature recognition And the supporting data in the knowledge base module, intelligent knowledge reasoning automatically proposes the machining plan template of the part from the process template template library; (3) automatic tool selection: selecting the machining tool based on the geometric parameters of the feature and the machining stage, for example based on the cutting volume The selection of the roughing tool is selected; (4) The intelligent structure and sorting of the machining unit: the tool is integrated into the machining plan template to form a complete process plan, and then the process described by the process plan drives the machining unit to be automatically constructed, that is, according to the tool Processing capacity, based on the residual area in the process The area where the tool can be machined, the intelligent reasoning selects the optimal machining operation and calculates the geometric parameters required for the machining operation, forms the machining unit sequence of each tool, and combines the process plan and the machining unit to form a complete sequence of NC machining units; 5) Automatically generate machining operations: automatically map the NC machining unit sequence to the machining operation tree in the “CNC machining” module of the CAD/CAM system, and automatically set the geometric parameters, strategy parameters, tool parameters and speed parameters of each machining operation. And the advance and retreat knife connection, and the tool rail calculation and machining simulation;
所述的数控程序智能优化模块⑤主要负责对智能编程过程中选取的资源、安排的加工顺序等进行优化,具体为:(1)刀具选取优化:采用基于切削体积 比的粗加工刀具选取方法,根据给定的刀具库列表,从刀具库中依次按照直径大小计算每把刀具可切削的所有加工区域体积,当存在一把刀具可切削的体积大于80%的待加工区域体积,则认为该把刀具为合适的粗加工刀具;另外,以最短加工时间为优化目标,对转角加工和侧壁精加工刀具进行优化,对符合条件的转角加工特征和侧壁内外形加工选取多种刀具方案进行加工,通过计算不同方案下刀具的加工时间确定转角特征和侧壁内外形加工特征的刀具,实现转角特征和侧壁精加工刀具的优化选取;(2)粗加工分层优化:针对飞机结构件中的多下陷结构,以实现分层粗加工时间最少为前提,保证在粗加工后每个槽腔特征的底部腹板可采用精加工腹板刀具一刀完成精加工的前提下,采用遗传算法对分层面进行智能优化,实现粗加工分层面的最少,以提高粗加工效率;(3)加工单元路径优化:分宏观层和刀具层两个层面进行优化;在宏观层,根据工艺方案描述的工艺过程,将所有的数控加工单元按照宏观的工艺过程(包括机床、工位、工序、工步及刀具)进行自动排序;在刀具层,对每把刀具关联的加工单元进行四级分组,首先将刀具关联的加工单元按照工步类型的不同分成多个二级单元组(包括两种类型:补加工单元组和目标加工单元组,其中补加工单元组在当前工步下对之前工步的补加工单元集,而目标加工单元则是当前工步指定要加工的单元集),并将补加工单元组先于目标加工单元组进行加工;其次,将补加工单元组根据加工单元所在工步的类型对其进行再次分组,形成三级单元组,并按照工艺流程顺序对这些三级单元组进行依次排序;再有,对三级单元组进行自上而下的整体分层排序,形成四级单元组;最后,以加工路径最短为优化目标,对四级单元组内的加工单元采用模拟退火算法进行路径优化排序,实现四级单元组内加工路径的优化。采用这种方式可以实现工艺方 案驱动的加工单元优化排序,综合考虑了几何级和工艺级的排序,可以显著提高排序效率和质量。The numerical control program intelligent optimization module 5 is mainly responsible for optimizing the resources selected in the intelligent programming process, the arranged processing sequence, etc., specifically: (1) tool selection optimization: using cutting volume based Compared with the roughing tool selection method, according to the given tool library list, the volume of all machining areas that can be cut by each tool is calculated from the tool library in turn according to the diameter. When there is a tool that can cut more than 80% of the volume For the machining area volume, the tool is considered to be a suitable roughing tool; in addition, the shortest machining time is the optimization target, and the corner machining and the side wall finishing tool are optimized, and the qualified corner machining features and the sidewall inner shape are satisfied. The machining selects a variety of tooling schemes for machining. By calculating the machining time of the tool under different schemes, the tool for determining the corner feature and the profile machining feature in the side wall is realized, and the corner feature and the side wall finishing tool are optimized. (2) Rough machining Layer optimization: For the multi-sag structure in aircraft structural parts, to achieve the minimum of layering roughing time, it is ensured that the bottom web of each cavity feature after roughing can be finished with a finishing web cutter. Under the premise, the genetic algorithm is used to intelligently optimize the sub-levels to achieve the minimum level of rough processing to improve Processing efficiency; (3) Optimization of processing unit path: optimization at two levels: macro layer and tool layer; in the macro layer, according to the process described in the process plan, all CNC machining units are in accordance with the macro process (including machine tools, Automatic sorting of stations, processes, steps and tools); in the tool layer, the machining units associated with each tool are grouped in four stages. First, the machining unit associated with the tool is divided into multiple secondary units according to the type of work step. Group (including two types: the supplementary machining unit group and the target machining unit group, wherein the supplementary machining unit group is the machining unit set of the previous working step under the current working step, and the target machining unit is the current working step designated to be processed. Unit set), and the processing unit group is processed before the target processing unit group; secondly, the processing unit group is subdivided according to the type of the step of the processing unit to form a three-level unit group, and according to the process flow Sorting the three-level unit groups sequentially; and then, sorting the three-level unit groups from top to bottom, forming a fourth Unit group; finally, to the shortest machining path optimization target, the four units of the group of processing units path simulated annealing algorithm optimized sequence, to optimize the machining path of the four cell groups. In this way, the process can be realized. The optimized processing of the processing unit is driven by a combination of geometric and process-level sequencing, which can significantly improve sorting efficiency and quality.
图3是为本发明飞机结构件智能数控加工编程系统实现的总流程,实现的具体步骤如下:3 is a general flow of the realization of the intelligent numerical control machining programming system for the aircraft structural member of the present invention, and the specific steps are as follows:
步骤1):进入CAD/CAM平台的“数控加工”模块(S1),并进入INCPro系统(S2),载入飞机结构件三维模型和毛坯模型;Step 1): Enter the “CNC Machining” module (S1) of the CAD/CAM platform and enter the INCPro system (S2) to load the 3D model and the blank model of the aircraft structural part;
步骤2):进行零件基本信息的设定,具体有:(1)零件的类型(S3):壁板、框、梁、肋、接头等;(2)加工侧个数(S4):包括单面、双面以及多面;(3)毛坯类型(S5):包括板材、型材、锻件以及铸件;Step 2): Set the basic information of the parts, including: (1) Type of parts (S3): siding, frame, beam, rib, joint, etc.; (2) Number of processing sides (S4): including single Face, double sided and multifaceted; (3) blank type (S5): including plates, profiles, forgings and castings;
步骤3):进入模型检测模块②,结合零件模型工艺性对零件模型进行质量检测(S6),并对不能满足实际工艺要求的局部错误结构进行相应的修正(S7),使零件模型满足加工工艺要求,以保证输入零件模型的正确性;Step 3): Enter the model detection module 2, combine the part model processability to perform quality inspection on the part model (S6), and correct the local error structure that cannot meet the actual process requirements (S7), so that the part model satisfies the processing technology. Requirements to ensure the correctness of the input part model;
步骤4):进入自动编程模块④,首先需要根据步骤2)中设定的零件类型与加工侧信息为每个加工侧设定对应的加工坐标系(S8),然后在每个加工坐标系下对零件所有的拓扑面进行面类型识别(S9),以此为基础识别埋头孔、沉头孔、椎孔、圆柱直孔等孔结构,并删除横向孔和斜向孔,便于特征识别的顺利实现;在每个加工坐标系下,采用基于分层加工思想的广义槽特征识别方法对零件进行加工特征识别(S10),即创建分层层面与零件实体求交并获取出每层的交线环及其内外环关系,由该关系确定每层的加工区域,然后提取出交线环中边线依赖的零件拓扑面,再将交线环中所有边线依赖的面进行组合,进而组成广义槽特征,再根据纵向面之间的关联关系构建出飞机结构件广义槽特征结构树(S11); Step 4): Entering the automatic programming module 4, firstly, according to the part type and processing side information set in step 2), the corresponding machining coordinate system (S8) is set for each machining side, and then in each machining coordinate system. Face type identification (S9) is applied to all the topological faces of the part. Based on this, the hole structure such as countersunk hole, countersunk hole, vertebral hole and cylindrical straight hole are identified, and the transverse hole and the oblique hole are deleted, so that the feature recognition is smooth. Realization; in each machining coordinate system, the generalized groove feature recognition method based on the layered machining idea is used to identify the machining feature of the part (S10), that is, the layered layer is created to intersect with the part entity and the intersection line of each layer is obtained. The relationship between the ring and its inner and outer rings, the relationship between each layer is determined by the relationship, and then the topological surface of the part dependent on the edge line in the intersection ring is extracted, and then all the faces dependent on the edge line in the intersection ring are combined to form a generalized groove feature. And constructing a generalized slot feature structure tree of the aircraft structural member according to the relationship between the longitudinal faces (S11);
步骤5):经过步骤4)中的特征识别后,人工交互选择是否载入现有的相似零件工艺方案(S12),如果选择“是”则从加工方案库中智能搜索相似零件的工艺方案,再由人工通过交互的方式优化选取;否则进入工艺方案自动生成模块③,根据工艺经验知识和零件类型进行知识推理(S13),确定当前零件的工艺方案模板(S14),包括机床、工位、工序、工步等,再基于加工特征自动选取刀具(S15),确定各加工阶段过程中加工不同特征所需要的刀具参数和切削参数(S16),并将加工方案模板和刀具选取结果进行合并,生成完整的工艺方案(S17);通过上述方式构建工艺方案后,形成包含七级节点(零件节点、机床节点、加工侧节点、工序节点、工步节点、程序节点及刀具节点)的树状结构,人工可交互修改(S19)并且进行有效性检查(S20),最后确认保存(S21);如果零件为首次加工,其工艺方案将自动添加到加工方案库中,以供下次相似零件的调用,保证方案的统一性和规范性;Step 5): After the feature recognition in step 4), the manual interaction selects whether to load the existing similar part process plan (S12), and if yes, the process plan of intelligently searching for similar parts from the processing plan library is selected. Then, the selection is optimized by manual interaction; otherwise, the process plan automatic generation module 3 is entered, and knowledge reasoning is performed according to the process experience knowledge and the part type (S13), and the current part process plan template (S14) is determined, including the machine tool, the work station, Process, step, etc., and then automatically select the tool based on the machining feature (S15), determine the tool parameters and cutting parameters required to process different features in each machining stage (S16), and combine the machining plan template and the tool selection result. Generate a complete process plan (S17); after constructing the process plan in the above manner, form a tree structure comprising seven nodes (part nodes, machine nodes, machining side nodes, process nodes, work step nodes, program nodes, and tool nodes) , the human can be interactively modified (S19) and the validity check (S20), and finally the save (S21); if the part is the first time Which process scheme is automatically added to the processing program library for use in subsequent calls similar parts, to ensure uniformity and standardization programs;
步骤6):再次进入自动编程模块④,首先从步骤5)生成的工艺方案中提取出各工步使用的刀具,并基于几何的刀具选取方法,将刀具与加工特征建立匹配关系(S22),保证加工特征在不同的加工阶段有合适的刀具进行加工;然后,根据工艺方案描述的宏观工艺流程以及刀具的可加工能力,并在残留区域实时计算的基础上求解出刀具的可加工区域(S23)、优化选取加工操作并计算加工操作所需的几何参数等信息以自动构建加工单元(S24),完成飞机结构件数控加工单元的构建(S25);Step 6): Entering the automatic programming module 4 again, first extracting the tool used in each step from the process plan generated in step 5), and based on the geometric tool selection method, establishing a matching relationship between the tool and the machining feature (S22), Ensure that the machining features have the right tool for machining in different machining stages; then, according to the macro process flow described by the process plan and the tool's machinability, and solve the tool's machinable area based on the real-time calculation of the residual area (S23) ), optimizing the selection of the machining operation and calculating the geometric parameters required for the machining operation to automatically construct the machining unit (S24), completing the construction of the NC machining unit of the aircraft structural member (S25);
步骤7):在步骤6)数控加工单元构建过程中,需要进入数控加工智能优化模块⑤,进行粗加工分层优化(S26)、加工路径优化(S27)等优化工作,实现数控程序的优化,最终提高数控加工效率; Step 7): In the process of constructing the NC machining unit in step 6), it is necessary to enter the NC machining intelligent optimization module 5 to perform optimization operations such as roughing layer optimization (S26) and processing path optimization (S27) to realize optimization of the NC program. Finally improve the efficiency of CNC machining;
步骤8):最后,在CAM系统中,自动生成与飞机结构件数控加工单元序列对应的加工操作树(S29),其中加工操作是使用一把刀具、一组加工参数及一条参数化刀轨所生成的加工程序,将数控加工单元序列中每个加工单元的策略参数、加工参数、几何参数、刀具参数以及加工宏参数分别设置到对应的加工操作中,即可完成加工操作的自动生成,然后再对所有加工操作进行刀轨计算(S30)和加工仿真(S31),即完成飞机结构件数控程序的智能编制;最后,通过前后置处理程序(S32)将数控加工刀轨转换为相应数控系统的NC代码(S33)。 Step 8): Finally, in the CAM system, a machining operation tree corresponding to the sequence of the NC machining unit of the aircraft structural member is automatically generated (S29), wherein the machining operation uses a tool, a set of machining parameters and a parameterized tool path. The generated machining program sets the strategy parameter, the machining parameter, the geometric parameter, the tool parameter and the machining macro parameter of each machining unit in the sequence of the NC machining unit to the corresponding machining operations respectively, thereby completing the automatic generation of the machining operation, and then Then, the tool path calculation (S30) and the machining simulation (S31) are performed for all machining operations, that is, the intelligent programming of the aircraft structural parts NC program is completed; finally, the NC machining tool path is converted into the corresponding numerical control system by the front and rear processing program (S32). NC code (S33).

Claims (3)

  1. 飞机结构件智能数控加工编程系统,该系统以CAD/CAM系统为平台,包括工艺资源与知识库管理模块及自动编程子系统,其特征在于:系统还包括模型检测模块、工艺方案自动生成模块、及数控程序智能优化模块;Intelligent CNC machining programming system for aircraft structural parts. The system uses CAD/CAM system as the platform, including process resource and knowledge base management module and automatic programming subsystem. The system also includes model detection module and automatic generation module of process plan. And the NC program intelligent optimization module;
    所述的模型检测模块,负责对零件模型进行自动化检测,具体包括:(1)零件模型设计错误;(2)标注信息不完整;(3)结构工艺性不足;实现对零件模型正确性、工艺性的自动审查;根据审查结果,提示问题的类型、位置及修改的方法,并且针对一些常见错误进行自动修改;The model detecting module is responsible for automatically detecting the part model, and specifically includes: (1) part model design error; (2) incomplete labeling information; (3) structural insufficiency; realization of correctness and process of part model Automated review of sexuality; based on the results of the review, prompts the type, location, and method of modification of the problem, and automatically modifies some common errors;
    所述的工艺方案自动生成模块,为实现工艺过程驱动的数控程序自动生成提供宏观的工艺方案,其中工艺方案采用多叉树表示,包括零件、机床、工位、工序、工步、程序、刀具、特征八级节点,可以描述宏观的加工工艺过程;通过工艺方案自动生成模块建立工艺方案模板库,对现有的飞机结构件进行分类并总结结构件的一般工艺流程,针对每类典型结构件建立了加工方案模板,包括机床、工位、工序、工步;然后,基于加工特征的制造资源选取方法选取机床、刀具、工装资源,并与加工方案模板相融合,自动生成飞机结构件的数控加工工艺方案;The process scheme automatically generates a module, and provides a macroscopic process plan for automatically generating a process-driven NC program, wherein the process plan is represented by a multi-fork tree, including parts, machine tools, workstations, processes, steps, programs, tools. The characteristic eight-level node can describe the macroscopic processing process; the process plan template library is built by the process plan automatic generation module, the existing aircraft structural parts are classified and the general process flow of the structural parts is summarized, for each type of typical structural parts The template of the processing plan is established, including the machine tool, station, process, and step; then, the manufacturing resource selection method based on the processing feature selects the machine tool, the tool, the tooling resource, and integrates with the processing template to automatically generate the numerical control of the aircraft structural part. Processing technology plan;
    所述的数控程序智能优化模块负责对智能编程过程中选取的资源、安排的加工顺序等进行优化,具体为:(1)刀具选取优化:采用基于切削体积比的粗加工刀具选取方法,根据给定的刀具库列表,从刀具库中依次按照直径大小计算结构件中每把刀具可切削的槽腔加工区域体积,当存在一把刀具可切削的体积大于80%的待加工区域体积,则认为该把刀具为合适的粗加工刀具;另外, 以最短加工时间为优化目标,对转角加工和侧壁精加工刀具进行优化,对符合条件的转角加工特征和侧壁内外形加工选取多种刀具方案进行加工,通过计算不同方案下刀具的加工时间确定转角特征和侧壁内外形加工特征的刀具,实现转角特征和侧壁精加工刀具的优化选取;(2)粗加工分层优化:针对飞机结构件中的多下陷结构,以实现分层粗加工时间最少为前提,保证在粗加工后每个槽腔特征的底部腹板可采用精加工腹板刀具一刀完成加工的前提下,采用遗传算法对分层面进行智能优化,实现粗加工分层面的最少;(3)加工单元路径优化:分宏观层和刀具层两个层面进行优化;在宏观层,根据工艺方案描述的工艺过程,将所有的数控加工单元按照宏观的工艺过程,包括机床、工位、工序、工步及刀具,进行自动排序;在刀具层,对每把刀具关联的加工单元进行四级分组,首先将刀具关联的加工单元按照工步类型的不同分成多个二级单元组(包括两种类型:补加工单元组和目标加工单元组,其中补加工单元组在当前工步下对之前工步的补加工单元集,而目标加工单元则是当前工步指定要加工的单元集),并将补加工单元组先于目标加工单元组进行加工;其次,将补加工单元组根据加工单元所在工步的类型对其进行再次分组,形成三级单元组,并按照工艺流程顺序对这些三级单元组进行依次排序;再有,对三级单元组进行自上而下的整体分层排序,形成四级单元组;最后,以加工路径最短为优化目标,对四级单元组内的加工单元采用模拟退火算法进行路径优化排序,实现四级单元组内加工路径的优化。The numerical control program intelligent optimization module is responsible for optimizing the resources selected in the intelligent programming process, the arranged processing sequence, etc., specifically: (1) tool selection optimization: adopting a roughing tool selection method based on the cutting volume ratio, according to According to the diameter of the tool library, the volume of the machining area of each slot in the structure can be calculated from the diameter of the tool. When there is a tool that can cut more than 80% of the volume of the area to be processed, it is considered The tool is a suitable roughing tool; in addition, With the shortest machining time as the optimization goal, the corner machining and the side wall finishing tool are optimized, and a variety of tooling schemes are selected for the processing of the angled machining features and the inner wall profile processing, and the machining time of the tool under different schemes is calculated. The tool for determining the corner feature and the profile processing feature in the sidewall, to achieve the corner feature and the optimization of the sidewall finishing tool; (2) Roughing stratification optimization: for the multi-sag structure in the aircraft structural member, to achieve layered coarse The processing time is at least the premise, ensuring that the bottom web of each cavity feature can be processed by the finishing web cutter after rough machining, and the genetic algorithm is used to intelligently optimize the sub-layer to realize the rough processing. At least; (3) Process unit path optimization: optimization at two levels: macro layer and tool layer; in the macro layer, according to the process described in the process plan, all CNC machining units are in accordance with macroscopic process, including machine tools and work Position, process, step and tool, automatic sorting; in the tool layer, the processing associated with each tool The element is divided into four groups. Firstly, the machining unit associated with the tool is divided into multiple secondary unit groups according to the type of work step (including two types: the supplementary machining unit group and the target machining unit group, wherein the machining unit group is currently working. Steps to the set of processing units for the previous step, and the target processing unit is the set of units to be processed in the current step, and the processing unit group is processed before the target processing unit group; secondly, the processing unit is processed The group is grouped again according to the type of the step in which the processing unit is located to form a three-level unit group, and the three-level unit groups are sequentially sorted according to the process sequence; and then, the third-level unit group is top-down. The overall hierarchical ordering forms a four-level unit group. Finally, the processing path is minimized as the optimization goal, and the processing unit in the four-level unit group is simulated and sorted by the simulated annealing algorithm to optimize the processing path in the four-level unit group.
  2. 根据权利要求1所述的飞机结构件智能数控加工编程系统,其特征在于:所述的自动编程子系统,主要包含:(1)自动特征识别:根据飞机结构件的三维几何模型和毛坯模型,采用分层特征识别方法进行零件的特征识别,获取零 件所有的加工特征,并以树状结构形式存储特征识别结果;(2)工艺方案智能推理:根据零件类型、加工侧个数、毛坯类型及特征识别结果等条件,结合工艺资源与知识库模块中的支撑数据,进行智能知识推理从工艺方案模板库中自动推荐零件的加工方案模板;(3)刀具自动选取:基于特征的几何参数及加工阶段选取加工刀具,例如基于切削体积比的粗加工刀具选取;(4)加工单元智能构造与排序:将刀具融合到加工方案模板中形成完整的工艺方案,再由工艺方案描述的工艺过程驱动加工单元自动构造,即根据刀具的可加工能力,基于加工过程中的残留区域提取出每把刀具可加工的区域、智能推理选取最优加工操作并且计算出加工操作所需的几何参数,形成每把刀具的加工单元序列,由工艺方案与加工单元相融合构成完整的数控加工单元序列;(5)加工操作自动生成:将数控加工单元序列自动映射到CAD/CAM系统的“数控加工”模块中的加工操作树,并自动设置每个加工操作的几何参数、策略参数、刀具参数、速度参数以及进退刀连接,并进行刀轨计算和加工仿真。The intelligent numerical control machining programming system for an aircraft structural member according to claim 1, characterized in that: the automatic programming subsystem mainly comprises: (1) automatic feature recognition: according to a three-dimensional geometric model and a blank model of an aircraft structural member, Feature recognition of parts using layered feature recognition method to obtain zero All the processing features, and store the feature recognition results in the form of tree structure; (2) Intelligent reasoning of the process plan: combined with process resources and knowledge base module according to the type of part, the number of processing sides, the type of blank and the result of feature recognition Supporting data in the process, intelligent knowledge reasoning automatically recommending the machining plan template of the part from the process template template library; (3) automatic tool selection: selecting the machining tool based on the geometric parameters of the feature and the machining stage, for example, roughing based on the cutting volume ratio Tool selection; (4) Intelligent construction and sorting of machining unit: The tool is integrated into the machining plan template to form a complete process plan, and then the process described by the process plan drives the machining unit to automatically construct, that is, based on the tool's machinability, based on The residual area in the process extracts the area that each tool can process, intelligent reasoning selects the optimal machining operation and calculates the geometric parameters required for the machining operation, forming the machining unit sequence of each tool, and the process plan and the machining unit Fusion constitutes a complete sequence of CNC machining units; (5) Machining operations Automatic generation: automatically maps the NC machining unit sequence to the machining operation tree in the “CNC Machining” module of the CAD/CAM system, and automatically sets the geometric parameters, strategy parameters, tool parameters, speed parameters and the advance and retraction of each machining operation. And perform tool path calculation and machining simulation.
  3. 一种如权利要求1所述飞机结构件智能数控加工编程系统的实现方法,其特征在于:具体步骤如下:An implementation method for an intelligent numerical control machining programming system for an aircraft structural member according to claim 1, wherein the specific steps are as follows:
    步骤1):进入CAD/CAM平台的“数控加工”模块,并进入“飞机结构件智能数控加工编程系统”,载入飞机结构件三维模型和毛坯模型;Step 1): Enter the “CNC Machining” module of the CAD/CAM platform, and enter the “Intelligent NC Machining Programming System for Aircraft Structural Components” to load the 3D model and the blank model of the aircraft structural components;
    步骤2):进行零件基本信息的设定,具体有:(1)零件的类型:壁板、框、梁、肋、接头等;(2)加工侧个数:包括单面、双面以及多面;(3)毛坯类型:包括板材、型材、锻件以及铸件;Step 2): Set the basic information of the parts, including: (1) Type of parts: siding, frame, beam, rib, joint, etc.; (2) Number of processing sides: including single-sided, double-sided and multi-sided (3) Type of blank: including plates, profiles, forgings and castings;
    步骤3):进入模型检测模块,结合零件模型工艺性对零件模型进行质量检测,并对不能满足实际工艺要求的局部错误结构进行相应的修正,使零件模型 满足加工工艺要求,以保证输入零件模型的正确性;Step 3): Enter the model detection module, combine the part model processability to carry out the quality inspection of the part model, and make corresponding corrections to the local error structure that cannot meet the actual process requirements, so that the part model Meet the processing requirements to ensure the correctness of the input part model;
    步骤4):进入自动编程模块,首先需要根据步骤2)中设定的零件类型与加工侧信息为每个加工侧设定对应的加工坐标系,然后在每个加工坐标系下对零件所有的拓扑面进行面类型识别,以此为基础识别埋头孔、沉头孔、椎孔、圆柱直孔等孔结构,并删除横向孔和斜向孔,便于特征识别的顺利实现;在每个加工坐标系下,采用基于分层加工思想的广义槽特征识别方法对零件进行加工特征识别,即创建分层层面与零件实体求交并获取出每层的交线环及其内外环关系,由该关系确定每层的加工区域,然后提取出交线环中边线依赖的零件拓扑面,再将交线环中所有边线依赖的面进行组合,进而组成广义槽特征,再根据纵向面之间的关联关系构建出飞机结构件广义槽特征结构树;Step 4): To enter the automatic programming module, firstly, according to the part type and processing side information set in step 2), the corresponding machining coordinate system is set for each machining side, and then the parts are all in each machining coordinate system. The topological surface is used for face type recognition. Based on this, the hole structure such as countersunk hole, countersunk hole, vertebral hole and cylindrical straight hole are identified, and the transverse hole and the oblique hole are deleted, which facilitates the smooth realization of feature recognition; Under the system, the generalized groove feature recognition method based on the layered machining idea is used to identify the machining features of the parts, that is, to create the layered layer and the part entity to intersect and obtain the intersection line of each layer and its inner and outer ring relationship. Determine the processing area of each layer, and then extract the topological surface of the part dependent on the edge line in the intersection ring, and then combine all the faces dependent on the edge line in the intersection ring to form the generalized groove feature, and then according to the relationship between the longitudinal faces Constructing a generalized trough feature tree of aircraft structural members;
    步骤5):经过步骤4)中的特征识别后,人工交互选择是否载入现有的相似零件工艺方案,如果选择“是”则从加工方案库中智能搜索相似零件的工艺方案,再由人工通过交互的方式优化选取;否则进入工艺方案自动生成模块,根据工艺经验知识和零件类型进行知识推理,确定当前零件的工艺方案模板,包括机床、工位、工序、工步等,再基于加工特征自动选取刀具,确定各加工阶段过程中加工不同特征所需要的刀具参数和切削参数,并将加工方案模板和刀具选取结果进行合并,生成完整的工艺方案;通过上述方式构建工艺方案后,形成包含八级节点的树状结构,其中七级节点具体为:零件节点、机床节点、加工侧节点、工序节点、工步节点、程序节点、刀具节点及特征节点;人工可交互修改并且进行有效性检查,最后确认保存;如果零件为首次加工,其工艺方案将自动添加到加工方案库中;Step 5): After the feature identification in step 4), manually interact to select whether to load the existing similar part process plan, if "Yes" is selected, the process plan of intelligently searching for similar parts from the processing plan library, and then by manual Optimize the selection by interactive means; otherwise, enter the process plan to automatically generate modules, perform knowledge reasoning based on process experience knowledge and part type, determine the current part process template, including machine tools, stations, processes, steps, etc., based on processing characteristics The tool is automatically selected to determine the tool parameters and cutting parameters required to process different features during each machining stage, and the machining plan template and the tool selection result are combined to generate a complete process plan; after the process plan is constructed by the above method, the inclusion is formed The tree structure of the eight-level node, wherein the seven-level node is specifically: part node, machine node, processing side node, process node, step node, program node, tool node and feature node; manual can be interactively modified and validity check , finally confirm the save; if the part is processed for the first time , its process plan will be automatically added to the processing plan library;
    步骤6):再次进入自动编程模块,首先从步骤5)生成的工艺方案中提取 出各工步使用的刀具,并基于几何的刀具选取方法,将刀具与加工特征建立匹配关系,保证加工特征在不同的加工阶段有合适的刀具进行加工;然后,根据工艺方案描述的宏观工艺流程以及刀具的可加工能力,并在残留区域实时计算的基础上求解出刀具的可加工区域、优化选取加工操作并计算加工操作所需的几何参数等信息以自动构建加工单元,完成飞机结构件数控加工单元序列的构建;Step 6): Re-enter the automatic programming module, first extract from the process plan generated in step 5) The tool used in each step is used, and the tool selection method based on the geometry is used to establish a matching relationship between the tool and the machining feature to ensure that the machining feature has a suitable tool for processing in different machining stages; then, the macro process described according to the process plan As well as the tool's machinability, and based on the real-time calculation of the residual area, the tool can be machined, the machining operation is optimized, and the geometric parameters required for the machining operation are calculated to automatically construct the machining unit and complete the NC of the aircraft structural parts. Construction of a processing unit sequence;
    步骤7):在步骤6)数控加工单元构建过程中,需要进入数控加工智能优化模块,进行粗加工分层优化、加工路径优化等优化工作,实现数控程序的优化;Step 7): In the process of constructing the NC machining unit in step 6), it is necessary to enter the CNC machining intelligent optimization module to perform optimization operations such as roughing layer optimization and processing path optimization to realize the optimization of the NC program;
    步骤8):最后,在CAM系统中,自动生成与飞机结构件数控加工单元序列对应的加工操作树,其中加工操作是使用一把刀具、一组加工参数及一条参数化刀轨所生成的加工程序,将每个加工单元的策略参数、加工参数、几何参数、刀具参数以及加工宏参数分别设置到对应的加工操作中,即可完成加工操作的自动生成,然后再对所有加工操作进行刀轨计算和加工仿真,即完成飞机结构件数控程序的智能编制;最后,通过前后置处理程序将数控加工刀轨转换为相应数控系统的NC代码。 Step 8): Finally, in the CAM system, a machining operation tree corresponding to the sequence of the NC machining unit of the aircraft structural member is automatically generated, wherein the machining operation is processing using a tool, a set of machining parameters and a parameterized tool path. The program sets the strategy parameters, machining parameters, geometric parameters, tool parameters and machining macro parameters of each machining unit to the corresponding machining operations, and then automatically generates the machining operation, and then performs the tool path for all machining operations. Computation and machining simulation, that is, the intelligent programming of the NC program of the aircraft structural parts is completed; finally, the NC machining tool path is converted into the NC code of the corresponding CNC system by the pre- and post-processing program.
PCT/CN2014/086105 2013-12-24 2014-09-09 Intelligent numerical control machining programming system and method for aircraft structural parts WO2015096511A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201310723872.6A CN103699055B (en) 2013-12-24 2013-12-24 Aircraft structure intelligent numerical control machining prgraming system and method
CN2013107238726 2013-12-24

Publications (1)

Publication Number Publication Date
WO2015096511A1 true WO2015096511A1 (en) 2015-07-02

Family

ID=50360622

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/086105 WO2015096511A1 (en) 2013-12-24 2014-09-09 Intelligent numerical control machining programming system and method for aircraft structural parts

Country Status (2)

Country Link
CN (1) CN103699055B (en)
WO (1) WO2015096511A1 (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103699055B (en) * 2013-12-24 2016-08-17 沈阳飞机工业(集团)有限公司 Aircraft structure intelligent numerical control machining prgraming system and method
CN103955167B (en) * 2014-05-06 2016-06-01 南京航空航天大学 Based on the digital control processing advance and retreat cutter locus interference inspection method of dynamic and visual
CN104007699B (en) * 2014-06-13 2017-10-17 沈阳飞机工业(集团)有限公司 Aircraft structure automated programming machining cell optimization sequencing method based on technical process
JP6088471B2 (en) * 2014-08-28 2017-03-01 ファナック株式会社 Numerical control device for easy adjustment of machining operation
CN104317249B (en) * 2014-11-03 2017-02-01 南京航空航天大学 Feature-based automatic groove feature grouping machining method for plate parts
CN104375462B (en) * 2014-11-03 2017-02-15 南京航空航天大学 Characteristic-based plate part in-groove tool path automatic-generation method
CN104360634B (en) * 2014-11-12 2017-02-15 南京航空航天大学 Skin mirror image milling numerical control program fast generating method based on features
CN104460522A (en) * 2014-12-23 2015-03-25 中铁宝桥集团有限公司 Simulating manufacturing method achieved through parametrically-programmed passenger-dedicated turnout rail piece
US9857789B2 (en) 2015-05-04 2018-01-02 The Boeing Company Model-based definition for machining aircraft parts
US10144530B1 (en) 2015-05-04 2018-12-04 The Boeing Company Model-based definition for machining aircraft parts
US9925625B2 (en) * 2015-05-04 2018-03-27 The Boeing Company Assembly of an aircraft structure assembly without shimming, locating fixtures or final-hole-size drill jigs
CN104932384A (en) * 2015-06-29 2015-09-23 贵州桂荣科技有限公司 Intelligent coding control system for electronic wristband assembly equipment
CN104950815A (en) * 2015-06-29 2015-09-30 遵义宏港机械有限公司 Automatic coding system for numerically-controlled milling machine
CN105159232A (en) * 2015-08-20 2015-12-16 广州市德慷软件有限公司 Method and apparatus for processing technological documents
CN105022346A (en) * 2015-08-21 2015-11-04 北京航空航天大学 Corner numerical control processing automatic programming method for aircraft complicated structural component
CN105242639A (en) * 2015-11-03 2016-01-13 南京航空航天大学 Numerical control machining feature customizing method
CN105344108B (en) * 2015-11-27 2017-11-07 上汽大众汽车有限公司 Car model preparation method
CN105807720B (en) * 2016-05-17 2018-07-06 深圳职业技术学院 Phone mould forming part numerical control programming and automation Working control device
CN106557072B (en) * 2016-11-21 2019-03-15 广州中国科学院工业技术研究院 The aided programming method of numerically controlled processing equipment execution program
CN106815447B (en) * 2017-02-03 2020-01-14 南京航空航天大学 Intelligent defining and classifying method for machining characteristics of complex structural part based on historical data
CN107423514B (en) * 2017-07-31 2020-10-30 中航沈飞民用飞机有限责任公司 Aircraft assembly process method based on digital structure
CN107664982B (en) * 2017-08-16 2020-03-24 沈阳航天新光集团有限公司 Method for optimizing tool trajectory by taking smooth cutting power as target
CN107562015B (en) * 2017-08-29 2020-03-24 沈阳航空航天大学 Process geometric model construction method based on numerical control machining programming
CN107862469A (en) * 2017-11-23 2018-03-30 深圳市前海文仲信息技术有限公司 Precision Machining touch screen visualized operation management method, mobile terminal and medium
CN108133088A (en) * 2017-12-11 2018-06-08 中车工业研究院有限公司 The adaptive creation method and system of CAD design model
CN108227627B (en) * 2017-12-18 2020-11-06 江苏科技大学 Numerical control programming method for key parts of marine diesel engine
CN108197730A (en) * 2017-12-23 2018-06-22 武汉益模科技股份有限公司 A kind of CNC machine processing flow optimization method
CN108405696B (en) * 2018-02-06 2020-04-03 王玉国 Intelligent spinning system and spinning processing method
CN108229074A (en) * 2018-02-11 2018-06-29 苏州市意可机电有限公司 A kind of three-dimensional software is created with intelligentized cutter and application method
CN109032076B (en) * 2018-07-05 2020-03-06 东华大学 Numerical control machining parameter generation method for manufacturing characteristics of complex structural part
CN109858370A (en) * 2018-12-29 2019-06-07 武汉开目信息技术股份有限公司 The portion identification method and device of machined surface in three-dimensional part model

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11175123A (en) * 1997-12-05 1999-07-02 Canon Inc Numerical control data preparation device, selecting method for machining tool, and storage medium
JP2001249710A (en) * 2000-03-06 2001-09-14 Amada Co Ltd Method and device for preparing nc data of laser working machine and storage medium with program of the same method stored
CN101763068A (en) * 2009-12-15 2010-06-30 沈阳飞机工业(集团)有限公司 Preparation system of quick numerical control machining of complex parts of airplane and method
WO2012108093A1 (en) * 2011-02-09 2012-08-16 株式会社日立製作所 Machining path creation method and machining method
CN103454974A (en) * 2013-09-22 2013-12-18 沈阳飞机工业(集团)有限公司 Intelligent numerical control programming method driven by complex component process scheme
CN103699055A (en) * 2013-12-24 2014-04-02 沈阳飞机工业(集团)有限公司 Intelligent numerical control machining programming system and intelligent numerical control machining programming method for aircraft structural parts

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102478831A (en) * 2010-11-23 2012-05-30 大连兆阳软件科技有限公司 Novel automatic programming system of shrapnel numerical control machine tool and programming method thereof
CN102591261B (en) * 2012-03-22 2014-04-16 沈阳飞机工业(集团)有限公司 Multilayer numerical control programming method for flexible hole formation on large-scale wing part
CN102929210B (en) * 2012-11-22 2014-07-16 南京航空航天大学 Control and optimization system for feature-based numerical control machining process and control and optimization method therefor
CN103235556B (en) * 2013-03-27 2015-08-19 南京航空航天大学 The complex parts digital control processing manufacture method of feature based

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11175123A (en) * 1997-12-05 1999-07-02 Canon Inc Numerical control data preparation device, selecting method for machining tool, and storage medium
JP2001249710A (en) * 2000-03-06 2001-09-14 Amada Co Ltd Method and device for preparing nc data of laser working machine and storage medium with program of the same method stored
CN101763068A (en) * 2009-12-15 2010-06-30 沈阳飞机工业(集团)有限公司 Preparation system of quick numerical control machining of complex parts of airplane and method
WO2012108093A1 (en) * 2011-02-09 2012-08-16 株式会社日立製作所 Machining path creation method and machining method
CN103454974A (en) * 2013-09-22 2013-12-18 沈阳飞机工业(集团)有限公司 Intelligent numerical control programming method driven by complex component process scheme
CN103699055A (en) * 2013-12-24 2014-04-02 沈阳飞机工业(集团)有限公司 Intelligent numerical control machining programming system and intelligent numerical control machining programming method for aircraft structural parts

Also Published As

Publication number Publication date
CN103699055A (en) 2014-04-02
CN103699055B (en) 2016-08-17

Similar Documents

Publication Publication Date Title
CN107832497B (en) A kind of intelligence workshop fast custom design method and system
CN104281729B (en) A kind of BIM methods manufactured applied to steel building Digital manufacturing
US20210004369A1 (en) Systems and methods for searching a machining knowledge database
Newman et al. CAD/CAM solutions for STEP-compliant CNC manufacture
Marri et al. Computer-aided process planning: a state of art
Xu et al. Striving for a total integration of CAD, CAPP, CAM and CNC
Peng et al. Applying RBR and CBR to develop a VR based integrated system for machining fixture design
Liu et al. Sequencing of interacting prismatic machining features for process planning
Zhou et al. A feasible approach to the integration of CAD and CAPP
Zhu et al. Complexity analysis of prefabrication contractors’ dynamic price competition in mega projects with different competition strategies
Rameshbabu et al. Hybrid feature recognition method for setup planning from STEP AP-203
Zhou et al. Knowledge-driven digital twin manufacturing cell towards intelligent manufacturing
CN108919760B (en) Intelligent workshop autonomous production process dynamic linkage control method based on digital twins
CN102722614B (en) Method for building dynamic three-dimensional process model
CN101763069B (en) Identification method of machining characteristics of complex parts of airplane
CN103390195B (en) A kind of machine shop task scheduling energy saving optimizing system based on intensified learning
Xu et al. Recognition of rough machining features in 212D components
Li et al. A dynamic feature information model for integrated manufacturing planning and optimization
CN105739440A (en) Adaptive machining method of wide-chord hollow fan blade
CN101339575B (en) Three-dimensional visualized process design system and its design method
JP2009524143A (en) Non-linear process plan generation method and internet-based STEP-NC system using the same
Subramaniam et al. Conceptual design of fixtures using genetic algorithms
Liu et al. Digital twin-based process reuse and evaluation approach for smart process planning
CN107491610A (en) Car panel die intelligent design system and design method
US7228196B2 (en) Computer-aided manufacturing system and method for sheet-metal punching

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14875638

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase in:

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14875638

Country of ref document: EP

Kind code of ref document: A1