【作者】 朱家生；

【导师】 刘飞； 李国龙；

【作者基本信息】 重庆大学 ， 机械制造及其自动化， 2006， 硕士

【摘要】 近年来,随着我国金属切削加工技术和刀具技术的快速发展,硬质合金孔加工刀具尤其是整体式硬质合金孔加工刀具的应用越来越多,对其要求也越来越高。螺旋槽加工是整体式硬质合金孔加工刀具制造中的一道关键工序,对刀具性能影响很大。目前,国内工具制造业在螺旋槽加工方面普遍缺乏专有设备,螺旋槽的加工质量差、加工效率低,已成为制约刀具加工质量和加工效率提高的一个瓶颈问题。论文基于设备数控化再制造的思想,研究了如何将闲置的普通电解工具磨床数控化再制造为螺旋槽专用加工设备,它对于提高螺旋槽的加工质量和加工效率以及增量盘活企业存量资产都有较大的实际意义。首先,论文介绍了普通电解工具磨床的结构和工作原理,分析了当前整体式硬质合金孔加工刀具螺旋槽的加工现状和存在的问题。在此基础上,提出了通过电解工具磨床的数控化再制造技术来解决螺旋槽加工问题的思路。接着,确定了数控化再制造的总体方案。进行了机床传动部分的导轨、传动机构、工作台纵向移动机构、磨头升降机构、工件转动和自动分度机构等的再制造设计,并基于开放式数控系统原理,确定了螺旋槽加工专用数控系统的研制方案。在上述研究的基础上,设计了数控系统的硬件、软件系统,探讨了通过改变传感器的布置和安装方式提高机床原点返回精度的方法,研究了螺旋插补算法的具体实现方法,实现了螺旋槽加工的CAD/CAM/CNC一体化。最后,进行了数控系统与机床本体的联机调试,并将数控化再制造的电解工具磨床实际应用于某工具企业的螺旋槽加工中。应用表明:再制造机床加工质量和加工效率明显提高,再制造成本显著低于新购同类设备费用,取得了较好的应用效果。更多还原

【Abstract】 In recent years, with the rapid development of metal cutting technology and cutter technology in our country, more and more hard alloy revolving cutters, especially the total hard alloy revolving cutters are used. So more requirements are demanded. The processing of spiral flute is the key working procedure during the course of machining total hard alloy revolving cutter. Which greatly influence the performance of a cutter. At present, the special equipment for processing the spiral flute is universally lagged in the tool machining industry in our country. This leads to bad processing quality and low processing efficiency of the spiral flute. Thus it becomes a bottle-neck problem of restricting enhancing the processing quality and processing efficiency of the cutter. Based on the thinking of equipment numerical controlled remanufacturing, how to turn the ordinary electrolytic tool grinder which left unused into the special equipment for processing the spiral flute by numerical controlled remanufacturing technology is researched in the paper. It is of biggish practical meaning to both enhancing the processing quality and processing efficiency of the spiral flute and making enterprise stock assets to be used efficiently as the increment.At first, the structure and work principle of ordinary electrolytic tool grinder is introduced in the paper. The current actuality and problem of processing the spiral flute in total hard alloy revolving cutter is analyzed. Based on this, an idea of resolving the spiral flute processing problem is proposed. That is putting the numerical controlled remanufacturing technology into the electrolytic tool grinder.In succession, the total scheme on numerical controlled remanufacturing is established. The transmission part of machine tool is remanufactured, such as the guide-way, transmission mechanism, drive mechanism for X-axis of work-stable, mechanism for grinding wheel up and down, mechanism for workpiece rotation and automatic indexing, and so on. And based on the principle of open architecture CNC system, the development scheme on the special CNC system for processing the spiral flute is fixed on.Based on the above research, the hardware and software system of the CNC system is designed. Enhancing the precision of returning machine origin by changing the disposal and installation way of the sensors is discussed. At same time, the idiographic implementation approach of the spiral interpolation arithmetic is researched. And the更多还原