【作者】 罗杰；

【导师】 朱志红；

【作者基本信息】 华中科技大学 ， 机械工程， 2017， 硕士

【摘要】 近年来市场对金属冲压件的需求正在急速地增长,目前国产数控系统在冲床领域的应用相对薄弱,国内的研究处于起步阶段,难以满足全面的功能和性能要求。本课题开发的液压转塔冲床数控系统相较于之前的国内研究,解释器实现了全部冲床指令,优化了步冲方案,能够完全兼容CAM软件生成的冲床加工代码,丰富了系统的工艺支持。此外,在夹钳保护功能方面,开发了夹钳的自动检测功能,相较FANUC系统增加了冲头智能避让功能。系统功能和性能接近主流冲床系统,因此本课题开发的冲床系统在国内具有良好的应用前景。本课题开发是在在华中8型数控系统平台上,平台具有良好的开放性,支持不同层次的二次开发,可以开发冲床解释器和各功能模块。系统基于X86架构,支持NCUC总线式传输,采用全数字式控制技术,经验证数据传输和计算能够满足高速冲床冲压频次的需求。论文主要的工作内容有冲床专用解释器的开发、实现冲压、成形和滚筋模式下的协同控制方案、系统间的通信、固定循环宏程序、夹钳检测保护和智能避让、模具管理和图形仿真等关键模块。首先,基于液压转塔冲床的组成结构和工作原理,对系统进行了需求分析,特别地优化了步冲方案,对实现平台进行了可行性验证,完成了系统的总体设计。随后结合系统和液压系统的交互模式,实现了冲压、成形和滚筋模式下的协同控制机制。分析冲床指令,开发了冲床专用解释器;研究冲床工艺特点,开发了固定循环宏程序;针对冲床模具特点,开发出简明有效的模具管理系统;在读取模具参数的基础上,开发了图形仿真模块;根据冲床夹钳保护需求,开发了夹钳保护功能和智能避让功能;基于系统的交互需求,实现了系统间的数据通信。最后对系统的进行了全面测试,结果表明在1mm步距、4mm冲程下频次在600次/min,功能和性能可以满足国内冲床市场的需求。更多还原

【Abstract】 In recent years,the market demand for metal plate and shell parts is growing rapidly.At present,domestic CNC system in the field of punch applications are blank.Domestic research is still in its infancy,it is difficult to practical application.In this paper,the interpreter of the hydraulic turret punching CNC system has realized all the punching instructions,optimized the step-by-step scheme,and can fully compatible with the punch processing code generated by the CAM software.In addition to providing the punching function,But also to achieve rolling,embossing and other technology.In addition,in the clamp protection function,the development of the clamp automatic detection function,to increase the punch intelligent avoidance function compared to other punch system.The system’s comprehensive functionality and stamping frequency are close to the mainstream FANUC Oi-PD punch system,System has a good application prospects in the country.The development of this project is in the HNC-8 platform.HNC-8 based on X86 architecture,support NCUC bus transmission,the use of all-digital control technology,data transmission and computing meets the needs of high-speed punch press.The punch interpreter and the functional modules can be developed on the platform.Firstly,the demand system is analyzed based on the composition and working principle of the hydraulic turret punch,the step-by-step scheme is optimized,the feasibility of the platform is verified,and the overall design of the system is completed.Then,the cooperative control mechanism of stamping,forming and rolling bar mode is realized by combining the interactive mode of system and hydraulic system.Developing the punch dedicated interpreter based on analysis of punch instructions.According to the characteristics of the punch mold,Developing a mold management system.Developing the graphic simulation based on the parameters of the mold.According to the protection requirements of clamp,the protection function and avoidance function were developed.And achieveing the data communication between systems.Finally,the system has been fully tested,the results show that the stamping frequency at 1mm step and 4mm stroke achieves 600 times / min.Function and performance can meet the needs of the domestic general punch market.更多还原