圆锥滚子轴承内圈双端面磨削的工艺研究

轴承内圈端面是轴承的安装基准，同时也是内圈磨加工各工序主要的工艺基准之一。端面的加工误差对后续工序的加工误差以及产品的加工质量有直接的影响。     

大型铝合金环锻件加工变形控制技术研究

大型铝合金环锻件加工工艺流程复杂，工序较多，加工过程伴随有工件变形。针对各主要工序带来的变形问题，结合加工工艺和工件材料性能属性对变形机理展开深入研究，围绕变形原因，针对加工前、加工中和加工后提出了一系列变形控制措施。通过试验验证了变形控制方法的有效性，为后续工件量产提供工艺优化参考。     

基于蚁群算法的零件多工艺路线决策方法研究

为满足企业对工艺规划的新需求，提出了采用蚁群算法进行多工艺路线决策的方法。在几何和技术需求以及可用加工资源的基础上，零件所有特征的各个加工阶段的工序节点构成了工艺求解空间，把加工工序安排的基本原理作为决策加工顺序的约束。采用蚁群算法对工艺求解空间中的所有工序节点在搜索规则的约束作用下进行遍历，最终寻找到能够完全满足工序节点搜索规则的优化工序序列。最后，用实例验证了该方法的可行性，证明该方法可以搜索出可行的工艺路线。     

乘用电动汽车前端盖加工工艺

对乘用电动汽车前端盖的加工工艺进行了详细的分析,阐述了各加工工序的加工工艺关键最与夹具功能特点,对各个加工工序中存在的技术难点进行了深入的分析,给出了具体的解决方案,并落实在设备选型和夹具的设计中。     

轴承套圈止动槽车加工位置的确定

轴承套圈加工工艺尺寸,由于某些测量方法受到限制或受到加工条件的限制,并要改变其测量基准时,需要进行工艺尺寸链计算。在制定零件加工工艺过程中,运用尺寸链的基本理论去分析零件加工各工序之间,以及各工序内相关的尺寸关系,从而正确地确定每一个工序中各加工表面的工序尺寸及公差,对于保证零件的加工精度和加工过程的经济性都有很重要的意义。     

以工件形面及组合特点进行工艺决策的方法（下）

四、工艺决策工艺决策是以形面归类码号为序，逐条确定对应的工艺方法。工艺决策可用形面归类码号对应着工艺信息代码的形式用工艺决策表列出。前文述及工艺决策的大致规律是工件的外形特点确定了机床型号、装卡顺序和装卡方法；工件的各单一形面的特点确定了加工工序和切削方法。但是机床和工序，装卡和切削方法是相辅相成的。如前例形面归类89号码，它可以在．C6140车床、M1040、M1420磨床上加工。但该件的工序和切削方法是由各单～形面中的加工精度确定，是否磨削预先未定，故不可能选磨床和留磨量，对确定顶尖孔还是标准中心孔，几次…     

工序尺寸图表法的巧用

在编制机械加工工艺规程时,除了按照＂优质、高产、低消耗＂的原则确定毛坯的材料、种类、加工方法、加工顺序和热处理工序等安排外,关键是要确定各工序的工序尺寸。当加工零件的工艺基准与其设计基准不重合时,确定工序尺寸又往往离不开计算工艺尺寸链。所以,工艺尺寸链的正确计算是编制机械加工工艺规程的一个重要环节。     

轴承套圈的CAPP开发

提出了轴承套圈加工过程中开发CAPP的总体设想，并针对轴承套圈相似性的特征，利用VB编程技术和数据库开发技术基于对象进行信息描述，将各特征信息控件实行动态链接，从而自动生成各工序的可视加工工艺卡界面。     

模具数控高速切削加工的工艺分析与工艺处理

介绍了模具数控高速切削加工工艺过程，一般情况下可分为粗加工、半精加工、清角加工及精加工等工序。通过工艺分析，提出相关的工艺处理与改善措施，以实现高效率的模具加工，并提高模具的加工精度和制造质量。     

NC加工工艺特点

欲使数控机床和加工中心达到良好的使用效果，获得高的经济效益，必须充分了解所选用机床的性能特点、加工工艺特点，采取合理的工艺措施，选择合适的加工对象，处理好数控工序和前期工序的衔接，合理地确定零件的加工工艺是十分重要的。     

Integrated assembly and machining planning for electronic products using a genetic algorithm approach

To produce an electronic product, both assembly operations and machining operations are required in the process plan. In most cases, the assembly operations and machining operations need to be combined in a continued order with an integrated sequence. This is different from the traditional process planning approaches in which machining operations and assembly operations are separated as two independent tasks with no interactions. For an electronic product, the two types of operations and the associated costs may affect each other in an interactive way. Therefore, the sequence planning of assembly operations and machining operations must be analyzed with an integrated model. In this research, a graph-based model is presented to represent the assembly and machining operations in an integrated model. The related operation cost functions are developed to evaluate the costs for the integrated assembly and machining sequences. The integrated sequence planning problem is solved using a genetic algorithm approach with an objective of lowest operation costs. As a result, the assembly operations and machining operations can be planned in an integrated sequence suitable for producing electronic products. The result shows that the developed method using the genetic algorithm approach is efficient for solving the integrated sequence planning problem. Example products are demonstrated and discussed.     

基于QFD的数控加工工艺质量优化规划方法

提出了一种基于质量功能配置的确定工艺质量水平的建模方法,并建立了优化数学模型,其目标函数是总体工艺质量改进程度最大化,约束条件包括三个方面：①工艺质量水平变化区间。②工艺质量要素之间的相关性。③预算的工艺质量成本。应用实例表明,针对具体的工艺质量问题,运用该模型能够帮助工艺设计人员有效地规划出最优的工艺质量水平。     

基于产品结构赋权有向图模型的工艺设计

通过增加点的工艺路线属性和弧的物料属性 ,扩展了产品结构赋权有向图模型。研究了基于扩展产品结构赋权有向图模型进行工艺设计的方法与技术 ,包括工艺路线分配、加工工艺设计、装配工艺设计等。最后给出应用实例     

Computer-aided process dimensioning

Conventionally, working dimensions have to be given before the construction of a tolerance chart can begin. Because the method of determining the working dimensions is based on trial and error, it is tedious and time-consuming. This paper proposes a method that can generate the working dimensions automatically from the process sequences and the blueprint dimensions. The method uses a relationship matrix to represent the process sequences and a special path-tracing technique to identify the process links. A unique algorithm is developed to reduce the unknown working dimensions to a system of linear equations, which is then solved using the Gauss elimination technique. This method can either be adopted by the process planner or implemented on a microcomputer. With this method, different processing sequences based on different factors, e.g. cost, machining time, etc., can be evaluated efficiently and economically. The developed program is then tested on a practical example.     

一排行星框架精加工关键工序工艺设计

重点对重型车辆高功率密度综合传动装置核心零件一排行星框架精加工工艺进行了阐述。对消除影响该零件加工精度的因素,在工艺实践中所采取的有效措施进行了总结。为一排行星框架及其同类产品在精加工阶段有效控制精度,提高产品质量和生产效率,实现批量生产,提供了技术依据。     

A Fast and Reliable Tool for Estimates for Plastic Blowing Moulds

This work presents a procedure to evaluate machining costs of dies made on CNC machines. Our survey deals with companies manufacturing plastic blowing moulds, and it is limited to the unit parts, that is, to the estimation step without going to the detail of process planning. To do this, we developed a process that uses the techniques of the semi-analytical method. This method is based on the decomposition of the shape required to manufacture the cavities; every cavity is decomposed in the same way for machining complex features, in order to determine the machining process and machining time, and the volume of metal to remove and the surface produced. ID="A1" Correspondence and offprint requests to: Dr Z. Bouaziz, Department of Mechanical Engineering, Route de Soukra Km3, BP W 3038, Sfax, Tunisia. E-mail: zoubeir.bouaziz@voila.fr     

基于三维零件模型的工艺路线设计方法研究

针对基于三维CAD的计算机辅助工艺设计(Computer Aided Process Planning,CAPP)的发展需求,提出了一种基于三维零件模型的工艺路线设计方法。从零件三维模型中提取加工特征,建立以加工特征为核心的工艺信息模型,有利于与上游CAD以及下游CAM的集成和信息共享。在工艺信息模型基础上建立以加工元为基元的工艺决策模型,通过聚类和排序约束实现工序/工步的确定和排序,实现工艺决策过程的算法化。通过飞机双面大框零件实例说明了该方法是简单有效的。     

PowerMILL软件在薄壁件高速加工中的应用

将PowerMILL软件的高速加工技术应用在薄壁件的加工中,研究其加工工艺,不仅提高了加工精度,而且缩短了产品的交付时间,具有较好的应用价值。     

Towards the integration of process and production planning: an optimisation model for cutting parameters

This paper aims to contribute to process and production planning integration through the development of a new cutting parameters optimisation model. The developed model considers simultaneously the technology-related constraints and a shop floor constraint determined by the available time at each workstation. The latter, being a constraint related to the part machining time, is associated with the set of all elementary machining operations and implies the development of a new multi-operation optimisation model. In this approach, part machining time is a new variable for shop floor scheduling. Since the limiting factor of workstation available time at every scheduling date depends on the shop floor status, optimum part machining time can range from the time for minimum cost to the time for maximum production rate. The introduction of the available time in the optimisation process allows for the generation of improved schedules according to several performance measures. The proposed optimisation model is non-linear, uni-criterion and multi-variable. The search of the optimal solution is carried out using sequential quadratic programming.     

真空泵转子加工工艺及工装改进设计

针对真空泵转子加工中的精度超差、叶片槽底有振纹等问题,重排了机加工工艺规程,设计了铣叶片槽专用平口钳工装.通过对专用平口钳工装的定位误差分析,验证了其方案可行性.新工艺规程的执行和新工装的应用,保证了产品质量,降低了工人劳动强度.