【作者】 吕凤民；

【导师】 赵福令；

【作者基本信息】 大连理工大学 ， 机械电子工程， 2005， 硕士

【摘要】 制造技术和机床是制造行业最基本的生产资料,而数控技术又是当今先进制造技术最核心的技术,对航天、航空、汽车、模具等工业的发展起着越来越重要的作用,因为这些行业所需装备的数字化已是现代发展的大趋势。 目前,在制造业中所使用的大多数五坐标数控加工中心,其中的两个旋转轴都是绕两个坐标轴旋转,即X轴、Z轴或者Y轴、Z轴。常用的CAD/CAM软件一般都会提供这种类型数控加工中心所需数控程序的后置处理功能。但是,随着数控技术的发展以及机床设计的实际需要,五坐标数控加工中心运动轴的方式呈现出多样化趋势。而一般的CAD/CAM软件都没有提供特殊运动轴方式的后置处理功能。因此,开发适合不同类型数控加工中心的后置处理程序是充分利用加工中心必不可少的环节。 本文针对大连理工大学现代制造技术实验室购进的德国DECKEL MAHO公司出品的DMU 70V型加工中心,从三维图形坐标变换入手,借鉴其它运动轴方式的后置处理算法确定过程,通过详细的推导,得出了DMU 70V型加工中心的后置处理算法。并从理论与实践两个方面对该算法进行了验证,验证的结果显示:该算法是正确并行之有效的。 以DMU 70V型加工中心的后置处理算法为基础,结合给出的C角连续性的有效算法,利用UG/Open GRIP强大的开发功能,开发出了针对UG生成的刀位文件的后置处理程序,并对几项关键的参数进行了多方位的测试,测试结果符合预期目标。 为了适合CAD/CAM软件的多样化,又在只针对UG软件的后置处理程序的基础上,增加了能够处理Pro/Engineer、NREC生成的刀位文件的后置处理模块。 从一段时间的实际加工来看,开发的后置处理程序所生成的数控加工程序能够在加工中心上运行并进行有效的加工。 本文的研究成果对其它类型运动轴方式的后置处理算法的确定具有一定的借鉴意义,并为开发其它CAD/CAM软件的后置处理程序提供了思路。更多还原

【Abstract】 Manufacturing technology and machine tools are the most elementary means of production, and NC technology is kernel of advanced manufacturing technology today. It has more and more effect on aeronautics & astronautics, automobile, die and model etc., because digitalization required by those industries above is the trend of modern development.Nowadays, most five-axis NC machining centers used in manufacturing have the characters that two rotating axes rotate round two axes of the coordinate, viz. X-axis & Z-axis or Y-axis & Z-axis. Generally speaking, CAD/CAM often applied have post-processing function for those type of NC centers mentioned above. With development of NC technology and actual requirement of machine design, however, the trend of diversification of mode of motion axes of five-axis NC machining center appears. But generic CAD/CAM can’t provide post-processing of specific mode of motion axes. As a result, development of post-processing program for different kinds of NC machining centers is absolutely necessary to the full use of machining center.Aimed at DMU 70V model machining center by DECKEL MAHO company in Germany of Advanced Manufacturing Technology Lab, by means of 3-D graphics coordinate transformation, on the basis of the procedure of deduction of post-processing algorithm of other mode of motion axes and detailed deducing, the paper gives the post-processing algorithm for DMU 70V model machining center. In addition, the algorithm is validated in theory and practice. The result shows that the algorithm is right and effective.Based on this algorithm and given algorithm of continuity of angle C, by means of powerful function of UG/Open GRIP, the post-processing program for cutter location files generated by UG has been developed. Key parameters in program validated in many aspects accord with the result expected.Based on post-processing program only for cutter location files by UG, post-processing modules for cutter location files by Pro/Engineer and NREC are added to the program in order to meet diversification of CAD/CAM.From machining practice, the NC program by the post-processing program can been run in the machining center to machine the part.The result from the research can be applied in the deduction of algorithm of other kinds of mode of motion axes for reference and provides clues for development of post-processing of other CAD/CAM.更多还原