共查询到19条相似文献,搜索用时 109 毫秒
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针对典型结构件在DMU50 e机床的数控铣削加工,研究将UG软件的刀位文件生成机床用程序的问题,首先提出了后置处理中重要的机床运动变换和字符转换方法,而后利用C语言编制了数控系统SIEMENS 840D的后置处理程序。最后通过实例仿真加工验证了方法的可行性。 相似文献
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针对CATIA数控加工的刀位文件,通过分析通用后置处理程序过程,开发五轴联动水切割机床的后置处理程序,解决五轴水切割数控加工的自动编程问题。实际切割结果证明,开发的后置处理程序能够正确将CATIA软件生成的APT刀位数据转换成五坐标水切割数控加工程序。 相似文献
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在五轴数控铣削加工过程中,后置处理属于非常重要的部分,其能够促使CAM系统所产生的刀轨文件变成机床的加工代码。后置处理非常复杂,其关系到刀位文件的坐标转换、转角计算等。笔者具体分析了五轴数控机床的后置处理和加工编程,通过解决大曲率曲面在数控机床加工中的范围狭窄的问题,为广大的技术工作者提供一些关于五轴数控铣削加工的参考资料。 相似文献
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针对双转台五轴数控机床因旋转轴与平移轴联动而产生的非线性误差,提出一种解析模型对非线性误差进行实时预测和补偿。选取刀位文件中的相邻点作为建立模型的刀位点,然后根据经典后置处理中的误差分布建立谐波函数解析的非线性误差模型;用该模型的解析表达式快速预测两刀位点之间的非线性误差,实现了对中间插补点的实时误差补偿。最后对一叶轮零件加工的刀位文件进行MALTLAB仿真分析,验证了所提算法的有效性。 相似文献
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研究了从NC代码中逆向提取刀位点的计算方法,通过UG软件仿真得到数控加工模型的刀位文件,再经后置处理得到模型的数控加工NC文件。经过研究后置处理理论,推导了从NC文件中的数据点反算刀位文件中的刀位点坐标及刀轴矢量,实现了从NC程序中提取曲面上刀位点及刀轴矢量的目标,为进一步实现数控加工信息的逆向提取提供了理论基础。最后通过VC编程实现逆向提取计算过程得到逆向提取的刀位点,经过与UGNX软件所得的刀位点进行对比验证,所得结论正确。 相似文献
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从分析刀轨文件和NC代码的格式入手,找出指令的一一对应关系,弄清诸多从建模到加工过程中的坐标系统,建立5坐标铣削中心坐标转换数学模型,从而实现从刀轨文件提取信息转化为NC代码的算法.最后通过实例验证了该加工中心后置处理技术的正确性. 相似文献
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文中对三坐标数控机床配置文件进行了分析,介绍了NC文件转换为由APT语言组成的刀位文件和不同数控系统的NC文件转换在实际应用中的意义。转换程序从读入FANUC数控系统NC代码开始,到输出SIEMENS数控系统NC代码结束,并生成相应的刀位轨迹。 相似文献
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J. N. Lee 《Journal of Mechanical Science and Technology》2007,21(10):1644-1650
The geometry of helical milling cutter with specific cross-section profile is normally generated with form cutter by the toolpath
generating method. The general purpose CAD/CAM software can generate the cutter location file of this class of product only
by the sculpturing method. To obtain the flexibility of machining process, this paper presents an interference-free toolpath
generating method for semi-finish and finish machining of the helical milling cutter. The method for design and machining
of the helical milling cutter is established based on the differential geometry and the enveloping theory. In the finish machining
of helical milling cutter, the form grinding wheel profile is firstly derived. To reduce the cost and lead time of the generating
method with the form-mill cutter for semi-finish machining, a toolpath generating method which combines the advantages of
the generating method and sculpturing method was presented. The cutter location uses ball-nose conical end mill is derived
according to the geometric characteristics of the enveloping element. The cutting simulations with solid model were performed
to verify the proposed toolpath generation method. 相似文献
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A New Tool-Path Generation Method Using a Cylindrical End Mill for 5-Axis Machining of a Spatial Cam with a Conical Meshing Element 总被引:2,自引:2,他引:0
R. S. Lee J. N. Lee 《The International Journal of Advanced Manufacturing Technology》2001,18(9):615-623
The geometry of a spatial cam is normally generated using a form-milling cutter and a special multi-axis machine and software.
The general purpose CAD/CAM software can generate the cutter location file of this class of product only by the sculpturing
method. Because of the limited choice of cutting tool when using the generating method, this paper presents a new toolpath
generating method which combines the advantages of the generating and sculpturing methods for machining a spatial cam. In
the machining process, the cutter location is derived for rough and finish machining using a cylindrical end mill. The guidelines
for choosing cutter diameter for the machining process are discussed. To avoid interference, the principal curvatures and
the principal induced normal curvatures are analysed. The mathematical errors including chordal deviation and scallop height
are used as the basis for generating appropriate tool-paths. Cutting simulation of a solid model was performed to verify the
proposed tool-path generation method. 相似文献
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四自由度混联机床的加工过程仿真研究 总被引:1,自引:0,他引:1
基于Pro/E和ADAMS等软件平台构建并联机床的仿真模型,并将刀位文件转换为模型的驱动数据,驱动机床模型运动,从而实现并联机床加工过程的仿真,解决并联机床在工业应用中的一些问题。 相似文献
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