共查询到20条相似文献，搜索用时 125 毫秒
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《教育教学论坛》2016,(16)
随着数控技术的深入发展,对数控技术人员的培训和学习有了更高的要求,针对传统数控仿真软件中存在的问题,提出了解决方案。本文从教学实际出发,详细地阐述了虚与实相结合的数控仿真系统的设计应用研究,将真实的操作面板与虚拟的仿真加工相结合,给数控加工技术的学习带来了重大的影响。这一应用可以减少训练实习成本,提高教学质量,并且将数控仿真系统分模块视频教程、自动评分系统两者与数控仿真系统相结合,实现了学生的自学、自评,为提高数控加工技术的教学质量提供了很大的保障。该模式对高职教育中其他课程的开展提供了借鉴意义。通过真实的操作面板与虚拟的仿真加工相结合的数控加工实训课程实施,为实践类课程校内训练仿真化提供了一定的依据。 相似文献
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《实验室研究与探索》2018,(11)
针对目前数控机床的投入使用量逐年增加,数控机床操作工培养成本较高,熟练的机床操作工数量不能满足市场需求。提出了一种基于半物理仿真思想的虚拟实训系统架构。介绍了虚拟实训系统的总体架构,给出了系统架构图。提出了系统的组成模块,给出了机床控制器、虚拟样机运动仿真和通信方案,给出了控制器系统的原理框图。具体完成了一种四轴加工中心的虚拟实训系统的设计。实验结果表明,该四轴加工中心虚拟实训系统能够根据机床控制器的控制信号实现虚拟加工,模拟切削过程。整个虚拟实训系统设计合理、可操作性高,完全能够满足用户操作数控机床的需求。 相似文献
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利用LabVIEW和Multisim软件,通过结点法和调用法设计了虚拟电子技术实验系统。该系统具有用户登录模块和仿真模块,实现了用户身份认证和远程仿真功能。经测试,系统运行稳定,可用于电子技术实验的虚拟仿真实践教学。 相似文献
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基于虚拟加工理论技术,介绍了工件、夹具、刀具的几何建模方法和虚拟数控机床的体系结构,研究了实现NC加工过程仿真的原理和方法,结果表明虚拟加工有益优质快速低成本地研发机械产品。 相似文献
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林科业 《韩山师范学院学报》2015,(3)
文章提出的控制系统利用虚拟软件仿真,实现文本文字的取模、点阵的仿真显示以及通过串口输入给单片机进行实时显示．该系统利用Labview平台,设计相应的上位机界面,通过虚拟串口,与pro?teus软件设计的单片机系统进行相互通讯,实现点阵实时显示．Labview平台还实现了点阵的模拟仿真,文本的取模以及数据的保存．该系统零成本,可不断地完善,便于学生进行深入的研究和学习,满足一般演示实验的要求. 相似文献
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由于虚拟仿真系统是实时的三维交互平台,因此流畅地运行对系统是至关重要的。通过对虚拟仿真优化技术的分析研究,结合虚拟仿真系统的实现,采用LOD技术、设置遮挡属性、巧妙使用摄像机等多种技术,提出了全方位、多角度优化虚拟仿真系统的解决方案。 相似文献
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高艳平 《天津职业院校联合学报》2011,13(2):47-49
数控加工动态仿真是应用虚拟现实技术在计算机上对数控机床加工过程进行模拟,可以在加工前准确校验程序,避免不必要的损失。在教学中应用数控加工动态仿真系统,可以调动学生的学习积极性,改善教学效果,有效降低技能训练成本、提高训练效率和安全性。 相似文献
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数控加工仿真系统的出现,使数控编程与加工由原来的理论教学,趋向于理论与实践的教学.数控加工仿真系统的安全、经济实用,即减少设备、场地和消耗等,在教学中的作用也体现出来. 相似文献
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冯小军 《深圳职业技术学院学报》2004,3(1):1-6
为充分发挥数控机床的加工潜力和提高切削效率，作运用模糊控制方法研究了铣削加工过程的模糊自适应恒功率控制系统，并通过计算机仿真验证了控制方案的可行性；设计了系统的硬件和软件：进行了联机实验。实验结果表明，系统工作稳定可靠，平均可提高加工效率达20％以上。 相似文献
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径向基函数网络在优化机械加工参数中的应用 总被引：1，自引：0，他引：1
In machining processes, errors of rough in dimension, shape and location lead to changes in processing quantity, and the material of a workpiece may not be uniform. For these reasons, cutting force changes in machining, making the machining system deformable. Consequently errors in workpieces may occur. This is called the error reflection phenomenon. Generally, such errors can be reduced through repeated processing while using appropriate processing quantity in each processing based on operator's experience.According to the theory of error reflection, the error reflection coefficient indicates the extent to which errors of rough influence errors of workpieces. It is related to several factors such as machining condition, hardness of the workpiece, etc. This non-linear relation cannot be worked out using any formula. RBF neural network can approximate a non-linear function within any precision and be trained fast. In this paper, non-linear mapping ability of a fuzzy-neural network is utilized to approximate the non-linear relation. After training of the network with swatch collection obtained in experiments, an appropriate output can be obtained when an input is given. In this way, one can get the required number of processing and the processing quantity each time from the machining condition. Angular rigidity of a machining system,hardness of workpiece, etc., can be input in a form of fuzzy values. Feasibility in solving error reflection and optimizing machining parameters with a RBF neural network is verified by a simulation test with MATLAB. 相似文献
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A unity transformation model (UTM) was presented for flexible NC machining of spiral bevel gears and hypoid gears. The model can support various machining methods for Gleason spiral bevel gears and hypoid gears, including generation machining and formation machining for wheel or pinion on a universal five-axis machining center, and then directly produce NC codes for the selected machining method. Wheel machining and pinion machining under UTM were simulated in Vericut 6.0 and tested on a five-axis machining center TDNC-W2000 with NC unit TDNC-H8. The results from simulation and real-cut verify the feasibility of gear machining under UTM as well as the correctness of NC codes. 相似文献
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In this paper,a special-purpose CAD/CAM software package,BliskCad/Cam,based on a commercial CAD/CAM software Unigraphics is developed to reduce difficulties in CNC-EDM of the shrouded turbine blisks.The software package con- sists of five modules such as electrode design,path searching,and machining simulation module.Functions of BliskCad/Cam include parametrical reconstruction of 3-D model of the blisk,intelligent design of complex shaped electrode,automatic gener- ation of NC codes,search of interference-free tool path for multi-axis NC-EDM and machining simulation,etc.Experimental verification is conducted by using BliskCad/Cam and the results show that it satisfies the requirements,and can realize pre- cision machining and reduce accessorial time remarkably. 相似文献
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To improve the machining precision of a surface grinding machine, a micropositioning workpiece table with high performance was used as auxiliary infeed mechanism to implement nanometer level positioning and dynamic compensation. To better understand the characteristics of the grinding machine modulated with micropositioning workpiece table, the dynamic model of the grinding system was established with modal synthesis and Lagrange's equation methods. The grinding system was divided into five subsystems. For each subsystem, the generalized kinematic and potential energies were obtained. Accordingly the dynamic model of the grinding system was given in the modal domain. The waviness of the grinding process was achieved based on the wheel and workpiece vibration. A nonlinear proportional integral derivative (PID) controller with differential trackers was developed to realize dynamic control. The simulation results show that the machining accuracy of the workpiece can be effectively improved by utilizing the micropositioning workpiece table to implement dynamic compensation. An experimental test was carried out to verify the proposed method, and the waviness of the workpiece can be reduced from 0.46 μm to 0.10 μm. 相似文献
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为充分发挥多媒体课件在测控电路课程教学中的作用,利用电路仿真软件Multisim制作了容器自动输送与喂料演示系统,解释控制电路与传感器检测电路作用;利用三维足形扫描仪制作的扫描视频介绍平台直线运动及利用结构光测量过程中涉及的单元电路;利用数控加工仿真系统模拟工作台移动及加工过程,了解数控铣床控制系统及有关电路组成。制作的三个典型测控系统课件已用于测控电路、现代电子技术及应用等课程的教学,提高了教学质量。 相似文献
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复杂曲面笔式加工的直接插补算法 总被引：2，自引：0，他引：2
针对复杂曲面笔式加工时位于曲面上的空间曲线型刀具轨迹,给出一种直接插补算法.即对以投影方式形成的位于曲面上的空间曲线形式的刀轨,根据导动曲线和刀触点轨迹线之间的几何运动关系,通过泰勒展开近似得到刀触点轨迹线上插补点所对应的导动线的参数,再反求间接得到刀触点坐标,从而生成控制机床运动的指令.该方法的实现扩充了CNC系统的轨迹控制功能,提高了复杂曲面的加工效率.仿真结果表明算法可行而且有效.该算法也可以应用到整体曲面加工中. 相似文献
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介绍了UG NX软件的加工工艺参数设置功能、刀具轨迹模拟功能、加工仿真功能和后置处理功能,以此来说明其在数控加工教学中的应用情况。利用UG NX软件,使数控加工教学更为形象、具体和生动。 相似文献