基于Powermill的五轴加工中心后处理研究

发布时间：2018-04-29 22:30

本文选题：五轴加工 + PM-post　；参考：《西南交通大学》2017年硕士论文

【摘要】：五轴数控加工中心是解决精密模具的成型件、精密仪器设备、航空、航天器零部件的重要设备之一。相对于普通三轴数控加工而言,五轴数控加工编程更加复杂,难度大,一般都需要借助自动编程软件来完成。通过自动编程软件编程所产生的刀路必须经过后置处理变换为数控机床能辨认的数控代码之后,才能对零件进行加工。但对于大多数自动编程软件来说,所配备的后置处理程序无法满足不同机床的需求,因此,根据五轴数控加工中心结构和系统,开发专用的后置处理程序便成了数控加工中的一个重要环节。本文针对由德马吉公司生产的DMU50五轴数控加工中心(配Siemens840D数控系统),对其后置处理进行了研究,制订出专用的后置处理文件,并利用VERICUT虚拟仿真软件对后置处理文件的正确性进行了验证。具体研究内容如下:(1)阐述了常见五轴数控加工中心的结构特点,对论文中研究的DMU50五轴数控加工中心的机床结构及机床参数进行了具体分析。(2)对五轴数控加工中心坐标变换、机床运动求解以及非线性运动误差校验等后置处理中的相关技术进行了研究,针对论文研究的DMU50五轴数控加工中心,通过理想化的运动学求解得到了各轴坐标转换的计算公式。(3)对PM-post后置处理模块的设置方法与流程进行了研究,根据DMU50五轴数控加工中心的相关参数,完成了配备Siemens840D系统的五轴加工中心专用后置处理文件的开发。(4)基于Powermill编制叶片零件加工程序,利用本文所开发的后置处理文件进行后置处理,生成相应的数控代码。并通过Vericut虚拟仿真软件完成了叶片的仿真加工,检验了 DMU50数控加工中心后置处理文件的正确性。本文研究的专用后置处理文件可在配备Siemens840D数控系统的DMU50五轴数控加工中心上直接使用,对基于Powermill的五轴数控加工中心后置处理开发具有一定的参考价值。
[Abstract]:The five-axis NC machining center is one of the most important equipments to solve the problems of precision mould forming parts, precision instrument equipment, aeronautical and spacecrafts parts. Compared with common three-axis NC machining, five-axis NC machining programming is more complex and difficult, and it usually needs to be completed by means of automatic programming software. The tool path generated by automatic programming software must be transformed into NC code which can be recognized by NC machine before parts can be processed. But for most automatic programming software, the post-processing program can not meet the needs of different machine tools. Therefore, according to the structure and system of five-axis NC machining center, Developing special post-processing program has become an important link in NC machining. In this paper, the post-processing of DMU50 five-axis NC machining center (with Siemens840D NC system) produced by Demaghi Company is studied, and a special post-processing file is worked out. The correctness of post-processing file is verified by VERICUT virtual simulation software. The specific research contents are as follows: (1) the structural characteristics of the common five-axis NC machining center are expounded, and the machine tool structure and machine parameters of the DMU50 five-axis NC machining center studied in this paper are analyzed concretely, and the coordinate transformation of the five-axis NC machining center is carried out. The related techniques in post-processing such as machine tool motion solution and nonlinear motion error check are studied. Aiming at the DMU50 five-axis NC machining center studied in this paper, Through the idealized kinematics solution, the calculation formula of coordinate transformation of each axis is obtained. (3) the setting method and flow chart of PM-post post-processing module are studied. According to the relevant parameters of DMU50 five-axis NC machining center, The development of special post processing file for five-axis machining center equipped with Siemens840D system is completed. The machining program of blade parts is programmed based on Powermill. The post processing file developed in this paper is used for post processing and corresponding numerical control codes are generated. The simulation machining of blade is completed by Vericut virtual simulation software, and the correctness of post processing file of DMU50 NC machining center is verified. The special post processing file studied in this paper can be directly used in the DMU50 five-axis NC machining center equipped with Siemens840D NC system, which has certain reference value for the post-processing development of the five-axis NC machining center based on Powermill.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG659

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