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用工业个人计算机(IPC)开发的数控火焰切割机CNC系统,除具有适合于数控火焰切割机工艺特点的控制功能外,还具有图形编程、仿形编程、加工程序屏幕模拟仿真和实时多任务处理等功能。插补计算采用了差分插补法,能对所有的二次曲线进行直接插补。 相似文献
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基于PMAC的数控火焰切割机数控系统开发 总被引:2,自引:0,他引:2
通过分析数控火焰切割机加工工艺的特点,开发了基于工业PC机和PMAC卡的数控火焰切割机数控系统,并对它的硬件和软件设计作了详细的论述,该数控系统已成功地应用于旧数控火焰切割机的改造中。 相似文献
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鉴于当前CAD/CAM行业软件缺乏对机床行为的仿真,提出一种基于沉浸式虚拟现实的机床切削运动行为仿真方法,详细阐述仿真系统的体系架构及开发平台。分析机床各运动轴的切削运动行为及部件运动的层次性与相关性。建立基于消息响应机制的行为仿真编程模型。研究并推导了刀具走刀轨迹中刀具扫描体曲面的求解过程,阐述NC代码编译及刀具实时切削过程仿真。最后,在Visual C++6.0环境下结合Virtools和OpenGL编程实现了虚拟机床切削行为仿真系统,该系统可应用于数控加工程序的验证、数控技术的教学和培训等场合。 相似文献
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刘晓红 《机械工程与自动化》2006,(1):132-133
数控火焰切割机切割时,切割件的切割面质量以及尺寸精度不仅取决于数控设备的精度和可靠性,而且与所用气体品质、切割程序的优劣和操作人员素质等有着密切关系。 相似文献
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根据火焰切割机的加工工艺要求,要对数控代码进行二次处理--对数控程序进行转换或在原有的数控程序中添加代码.分析了进行代码二次处理的几种原因,重点阐述了零件加工前在零件数控代码中添加引入和引出线代码的几种不同情形及实现方法. 相似文献
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The current research of processing large size fabrication holes on complex spatial curved surface mainly focuses on the CNC flame cutting machines design for ship hull of ship manufacturing. However, the existing machines cannot meet the continuous cutting requirements with variable pass conditions through their fixed configuration, and cannot realize high-precision processing as the accuracy theory is not studied adequately. This paper deals with structure design and accuracy prediction technology of novel machine tools for solving the problem of continuous and high-precision cutting. The needed variable trajectory and variable pose kinematic characteristics of non-contact cutting tool are figured out and a metamorphic CNC flame cutting machine designed through metamorphic principle is presented. To analyze kinematic accuracy of the machine, models of joint clearances, manufacturing tolerances and errors in the input variables and error models considering the combined effects are derived based on screw theory after establishing ideal kinematic models. Numerical simulations, processing experiment and trajectory tracking experiment are conducted relative to an eccentric hole with bevels on cylindrical surface respectively. The results of cutting pass contour and kinematic error interval which the position error is from –0.975 mm to +0.628 mm and orientation error is from –0.01 rad to +0.01 rad indicate that the developed machine can complete cutting process continuously and effectively, and the established kinematic error models are effective although the interval is within a ‘large' range. It also shows the matching property between metamorphic principle and variable working tasks, and the mapping correlation between original designing parameters and kinematic errors of machines. This research develops a metamorphic CNC flame cutting machine and establishes kinematic error models for accuracy analysis of machine tools. 相似文献
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数控机床撞刀是机床操作用过程中较为常见的事故,基于配置为FANUC OiD系统的数控机床为研究对象,全面地分析了引发数控机床撞刀的原因,为从事机床操作、维修教学的人员提供有效的参考,尽可能地避免在机床操作过程中撞刀事故的发生。 相似文献
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从机床坐标系、工件坐标系及编程坐标系出发,分析了数控镗铣类机床及加工中心在同一个工件坐标系下使用多把长度不同的刀具对工件进行加工时进行刀具长度补偿的原因。论述了有基准刀与无基准刀长度补偿的原理,研究了这两种方法的特点,提出了机床Z坐标的计算方法。讨论了撤消长度补偿后CNC控制刀具所走的编程坐标表达的实际意义,这对理解数控加工刀具长度补偿及数控编程具有实际指导意义。 相似文献
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数控刀具网络协同设计系统的开发与研究 总被引:1,自引:0,他引:1
论述了数控刀具网络协同设计系统的构建原理和方法,以及所用到的各方面的知识体系,并以数控刀具的典型代表-可转位球头立铣刀为例,给出了该种刀具的三维参数化网络协同设计方法. 相似文献
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