【作者】 刘劲松；

【导师】 夏顺仁； 肖铎；

【作者基本信息】 浙江大学 ， 控制工程（专业学位）， 2016， 硕士

【摘要】 我国经济发展方式正从规模速度型粗放增长转向质量效率型集约增长,线材制品行业面临自主创新不强,经济效益下滑,盈利水平下降,企业经营困难,市场竞争激烈的局面。为应对经济发展形势并提升市场竞争力,需加快转型升级,突出自主创新,本论文提出一种基于运动控制卡的开放式数控弯线机系统设计方案,实现对新型专用数控弯线机系统的自主研发。本论文首先通过分析数控系统的发展趋势和开放式数控系统的结构特征,提出基于运动控制卡的开放式数控弯线机系统设计方案。通过系统硬件设备选型,构建数控弯线机系统基础平台,并完成人机交互界面和控制系统的设计开发,实现在三维空间内对金属线材的折弯成形和自动化生产。本论文设计的数控弯线机系统拥有友好的人机交互界面,实现手动、手轮和自动三种控制方式,方便系统调试；集成代码编辑、校验和自动执行功能,提高了系统功能集成化和操作便捷性；采用双模头多模位结构,可同时装载不同的折弯模具并自动切换；支持各轴连续动作和多轴联动,实现对金属线材的三维空间复杂折弯；可执行G代码文件实现对金属线材的自动化生产。针对金属线材折弯过程中存在的弯曲回弹现象,提出基于神经网络模型的回弹补偿控制策略,并通过建模仿真验证其合理性。通过采用面向对象的模块化设计方法,使系统在扩展性、开放性、连续化、自动化和高速化方面有较好性能,便于维护、升级和二次开发。更多还原

【Abstract】 The mode of economic development in China is turning from the extensive growth of scale and speed to the intensive growth of quality and efficiency. Wire products industry is facing weak independent innovation, the decline in economic efficiency and profitability, business difficulties, intense market competition situations. In response to the economic development situation and enhance the market competitiveness, it is necessary to accelerate the transformation and upgrading, highlighting independent innovation. This thesis presents a design of open CNC wire bending machine system based on motion control card, and realizes the independent research and development of the new special CNC wire bending machine system.This thesis firstly analyzes the development trend of CNC system and the structural characteristics of the open CNC system, and puts forward the design of open CNC wire bending machine system based on motion control card. Through the selection of the system hardware, we construct CNC wire bending machine system platform, and complete the design and development of the human-machine interactive interface and the control system to achieve metal wire bending and automated production in the three-dimensional space.In this thesis, the design of CNC wire bending machine system has friendly human-machine interactive interface and realizes three kinds of control mode as manual, hand-wheeled and automatic mode, convenient to debug the system. Integrated code edit, calibration and automatic execution function improve the function integration and operation convenience of the system. Adopting dual-mode head multi-mode bit architecture can load different bending moulds at the same time and switch automatically. The support for each axis and multi-axis continuous action achieves complex metal wire three-dimensional bending. The G executable code files achieve the automated production of metal wire. According to the bending springback phenomenon in the bending process of metal wire, a springback compensation control strategy based on neural network model is put forward and the rationality is verified by modeling and simulation. By using modular design method based on object, the system has better performance in the expansion, opening, continuity, high speed and automation, which is also easy to maintenance, upgrading and secondary development.更多还原