【作者】 杨虎；

【导师】 唐小琦； 李作清；

【作者基本信息】 华中科技大学 ， 机械电子工程， 2007， 硕士

【摘要】 随着运输制造行业的迅速发展,我国对各类弯管制造设备的需求越来越大,要求也越来越高。弯管零件以往多采用手工或液压弯管夹具弯曲的方法生产,这两种加工方法存在着生产准备周期长、投资大或单品种专机使用的缺点,无法适应小批量多品种、高效率生产的要求。为此,本文将数控技术运用到弯管加工设备中,开发了弯管机专用数控系统。本文主要完成了以下工作:分析了弯管机的工作原理、控制要求以及国内数控弯管机的需求状况;根据弯管零件的加工特点及其发展趋势,分析了弯管机系统的软硬件设计方案,最终提出了弯管机系统的整体设计方案,并在此基础上,深入研究了弯管空间坐标转换算法和弹性回弹算法,完成了弯管空间坐标直接转化为M代码系统的设计,从而实现了弯管系统的自动编程和自动换模加工;基于以上的分析与研究,开发了自动弯管编程、智能暂停等功能较完善的弯管机专用数控系统。该数控弯管机现已应用于弯管企业的实际生产加工,实践表明,该专机的应用缩短了新模型的设计周期,提高了弯管零件加工的生产效率和制造精度,增强的弯管机床的扩展性,提高了产品质量和档次,满足了实际生产的需要。更多还原

【Abstract】 With the rapid development of the transportation manufacturing industry, the demand of tube-bending manufacturing equipment becomes much more urgent. In the past, tube-bending tools were mostly manually produced or produced by hydraulic fixtures. But many defects exist in these two ways, such as: long cycle of production preparations, high cost of investment and single varieties plane used only. So they are not fit for small batch, variety and high efficiency production. Therefore, CNC technologies are introduced into the devices for manufacture tube-bending tools, and a special CNC system for tube-bending tools machine is developed.The work includes: analysis of working principium for the tube-bending machine, control requirement and the development. Based on the working principium of tube-bending manufacture and development, some reasonable software and hardware schemes are proposed, and then the best one scheme is proposed. And then, geometry models of facility are established, the tube-bending module and the M code system transformation system are built. Therefore, the automation programming system for tube-bending machine and module changing system is developed. Finally, based on the above analysis and study, the special CNC system of tube-bending machine is achieved, which can code and program automatically for tube-bending manufacture.The CNC tube-bending machines have already been using in factories. The special CNC system can not only shorten the development period for new kinds of products, but also improve the work efficiency in practice, make the products with higher and topper grade, and meet the requirements in tube-bending manufacture.更多还原