【作者】 田志宾；

【导师】 冯清秀；

【作者基本信息】 华中科技大学 ， 机械电子工程， 2006， 硕士

【摘要】 随着现代制造技术的发展,冲压生产技术也向高速化、自动化、柔性化方向发展。冲压生产过程中的手动操作、人工上下料等传统生产方式已无法满足高速发展的工业要求。在冲压生产中采用自动化生产单元或组成柔性自动化生产线,是进行高速、高效、高质量冲压生产的一种有效方法,也是现代冲压生产技术的重要发展方向之一。大型封头零件冲压设备作为一种特种专用冲压设备,其成本高、数量少,一直以来采用人工上下料。人工上下料困难、安全性差、工作效率低下,严重制约了大型封头冲压设备的利用率,影响了国内企业在国际市场上的竞争力。本文从国内外冲压上下料辅机的发展状况着手,研制了一种专为大型封头零件冲压设备提供自动上下料服务的辅机,它能高效率地完成上下料、对中定心、喷涂润滑液等工作。本文的具体工作如下:研究了大型封头零件的冲压生产工艺,分析了大型封头零件冲压主机的工作方式、结构特点、对上下料工作的要求,确定了上下料辅机的工作原理,设计了自动上下料辅机的系统方案。从系统方案入手,依照模块化设计方法,对坯料小车、上料小车、下料小车和喷涂旋转及升降机构等关键部件进行了分析、设计与计算。对辅机中采用的液压系统与气动真空系统进行了研究。对真空吸盘的上升下降运动、旋转机构的升降运动、对中机构的运动特点进行了分析,拟定了液压系统的工作原理,并对关键元器件进行了设计计算;分析了气动真空系统的工作特点,确定了工作原理图,并对真空吸盘、真空发生器等关键元器件进行了计算选择。对辅机的控制系统进行了研究设计。分析了控制对象的特点,根据控制系统的特点,选择了PLC为控制核心的控制系统,确定了硬件连接,编制了软件程序。最后,对全文进行了总结与展望。更多还原

【Abstract】 With the development of modern manufacture engineering, punching manufacturing technology becomes more automatic and more flexible and its speed becomes higher. Traditional ways such as manual operation, manual feed and manual transfer in the process of punching can not meet the requirements of the fast developing industry. The automatization of manufacturing cell or the makeup of flexible automatic production lines in the process of punching production is an efficient way to carry out the production in high speed, high efficiency and high quality. It is one of the most important directions of modern punching manufacturing technology.As special and specific punching equipment, large punching machines for heads are few and their costs are very expensive. Furthermore, their work efficiency is very slow in our country because its feeding and blanking depend on manual operation, which are difficult and dangerous. These traditional operation ways restrict the utilization ratio of large punching machines for heads seriously and have a side effect on the competitive power of domestic enterprises in international markets.Following the domestic and international development of auxiliary machines for punching, this thesis has developed an auxiliary machine served for a big punching machine, which can complete feeding, blanking, alignment, and spraying lubricating liquid high effectively. The specific work in this thesis is as following:Firstly, the punching techniques of production for large head parts are researched. The operation mode, the characters of structures, and the requirement of feeding and blanking are analyzed. The operating principle of the auxiliary machine for feeding and blanking is confirmed. The system blueprint of the automatic auxiliary machine for feeding and blanking is designed.In detail, according to the design blueprint, following the modular design method, this thesis has analyzed, calculated and designed the billet vehicle, feeding vehicle, blanking vehicle, rotary and lifting mechanism for spray coating.Secondly, the hydraulic system and the pneumatic system adopted in the auxiliary machine are researched. This thesis has also analyzed the lifting of both the vacuum sucking disk and rotary mechanism, demonstrated the operating principle of the pneumatic system, calculated and designed for key devices, analyzed the operation characters of the pneumatic system, drawn the operating principle chart, and calculated and chosen key devices, such as vacuum sucking disk, vacuum pumps and so on.Finally, the control system of the auxiliary machine has been designed. According to the characters of both controlled objective and control system, PLC has been selected as the core of the control system; the hardware connection has been ensured; and the software procedures have been coded.更多还原