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LabVIEW可实现多任务并行实时处理,为数控软件的开发提供了新的平台。开发了一种小型铣床的控制软件,设计了基于LabVIEW平台的译码、刀补、插补等6个模块,最后进行了数控代码的加工仿真。结果表明,该软件可实现数控代码的编译、直线插补、圆弧插补、刀具补偿等功能。 相似文献
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研究利用VB正则表达式进行NC代码编译器设计的关键问题.采用模块化设计,实现对多种数控系统程序代码的检错和译码,具有很好的通用性,并且功能比较完善,支持固定循环、子程序、宏程序调用,解决了当今NC代码编译器设计中通用性差和不支持复杂数控指令的问题.并在该NC代码编译器的基础上开发了基于Pc机+运动控制卡的开放式数控雕铣系统. 相似文献
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《组合机床与自动化加工技术》2017,(7)
针对经济型数控系统中平面三次多项式曲线的插补,提出采用差分插补原理对其进行直接插补。该方法插补精度较高,插补误差不会超过1/2个脉冲当量。通过定义三次多项式曲线的ISO代码,以及对差分插补原理中相关概念的分析,得到了三次多项式曲线的差分插补代码,简化了加工程序的编制,降低了数控系统的译码负担。针对两种类型的三次多项式差分插补代码的计算,进行了详细的译码分析。结合VC++6.0开发了数控仿真程序,并在教学用三坐标数控实验台上进行了插补测试,验证了针对差分插补代码译码方法的正确性,实现了三次多项式曲线的直接插补。 相似文献
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《组合机床与自动化加工技术》2016,(9)
复杂曲面的五轴数控代码繁多复杂,采用人工检查、试切和机床空运行的代码检测方法耗费人力物力,造成资源浪费。针对这个问题,文章以曲面产品为例,首先在NX8.0的CAM模块里面规划生成该曲面加工的刀轨数据,再根据特定的五轴数控机床构造后置处理器,生成该曲面的五轴数控加工代码,最后在Vericut里面建立机床仿真模型,对数控代码仿真。通过仿真结果,修改了错误的数控代码,并对代码进行了优化和残留过切检查,得出了该方法在五轴数控编程、数控代码检查方面的优越性。 相似文献
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Zhenwei Wang Shengdun Zhao Yating Yu 《Journal of Materials Processing Technology》2007,190(1-3):89-95
Vibration cropping is a new approach of low-stress manufacturing technique. Vibration cropping machine is a main component of cropping system and directly affects the manufacturing quality. After the working principle of vibration cropping is explained, the analytical, numerical and experimental methods are, respectively, applied to analyze the dynamic characteristics of low-stress vibration cropping machine. Firstly, the motion equation of the cropping machine is derived theoretically based on the kinematics of mechanism, and the mode frequencies and the mode shapes are obtained. In order to assess the computational accuracy, the calculation error is analyzed and the calculation error model is constructed. As a result, the calculation error 2% is confirmed. Secondly, the finite element analysis is used to verify the correctness of the computational result. Analysis shows that the analytical result is in good agreement with the numerical result. Thus, the dynamic characteristics of vibration cropping machine are obtained completely and the reasonable cropping frequency is determined. Experiments prove that the analysis result is correct. 相似文献
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基于MATLAB/Simulink的粒度分离过程计算机仿真 总被引:1,自引:0,他引:1
以仿真振动筛分过程为例,采用先进的科学计算软件MATLAB/Simulink对粒度分离过程进行计算机仿真。建立了振动筛分过程仿真模型,介绍了仿真所用的数学模型及主要Simulink模块,并进行了筛分过程的计算机仿真。仿真结果与实测结果非常吻合,筛上产品、筛下产品的仿真值与实测值相对误差分别为-4.26%和1.09%。仿真实验表明振动筛分过程仿真模型准确地反映了其筛分过程,论证了采用MATLAB/Simulink对粒度分离过程进行计算机仿真的可行性。 相似文献
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A three dimensional model including a non-rotational symmetry keyhole of which the geometry is calculated base on the energy balance at keyhole wall is created to simulate the heat transfer and fluid flow within the molten pool during laser full penetration welding of titanium alloy plate.In order to take into account the effects of multiple reflections within the keyhole,a ray tracing method is employed and the coordinate dependent heat flux obtained is exerted on keyhole wall during the simulation on the heat transfer and fluid flow within molten pool.Furthermore,the computed weld cross sectional profile is compared with the experimental result to verify the model and it is fond that the simulation result is consists with experimental result. 相似文献