鼓轮式多工位复合机床加工控制技术研究

发布时间：2019-05-27 22:46

【摘要】：多工位复合机床加工通过多个工位的并行控制,能够比较显著地缩短加工时间,从而提高生产效率;同时,在一台机床上采用复合工艺的加工,减少工件的装夹次数,从而减小定位误差,提高工件的加工精度。本文通过对复合加工的应用形式的分析,归纳总结出复合加工的技术特点并提出了控制集合的概念。针对多工位复合加工有多个坐标系,且每个控制集可以独立控制和并行控制的特点,提出了多通道控制的技术方案。数控系统的多通道控制技术是高档数控系统的最核心功能之一,它为复合机床的多工位复合加工提供了良好的技术支持。宏茂鼓轮式多工位复合机床是一个八工位的复合加工机床,八个工位之间协同控制以完成零件复合加工的工艺要求。本文通过对该机床结构和典型零件的复合加工工艺方案进行研究,完成了该复合加工机床控制系统的设计。通过工位通道的配置将一个八工位的复合机床划分成八个相对独立的可以并行控制的机床。通过PLC的设计,完成了各个工位之间的同步控制要求。通过设计与多通道相关的配置表项,解决了多通道配置设计的难点。通过实现多通道参数化生产G代码功能,顺利解决了多通道G代码编写的难点。最后,通过一三通水暖零件的加工来验证该多通道控制系统,并将该机床的加工效率与普通机床的加工效率进行了对比。实验结果表明,该多通道的控制系统可以实现预期的多工位复合加工控制,而且加工效率是普通机床的15倍。
[Abstract]:Through the parallel control of multiple stations, the machining time of multi-station composite machine tool can be shortened significantly, thus the production efficiency can be improved. At the same time, the compound process is adopted on a machine tool to reduce the clamping times of the workpiece, so as to reduce the positioning error and improve the machining accuracy of the workpiece. Based on the analysis of the application form of composite machining, the technical characteristics of composite machining are summarized and the concept of control set is put forward in this paper. In view of the fact that there are multiple coordinate systems in multi-station composite machining and each control set can be controlled independently and in parallel, a technical scheme of multi-channel control is proposed. The multi-channel control technology of CNC system is one of the core functions of high-grade CNC system, which provides good technical support for multi-station composite machining of composite machine tools. Hongmao drum multi-station composite machine tool is an eight-station composite machining machine tool, which is controlled by cooperation between eight stations to complete the process requirements of compound machining of parts. In this paper, the structure of the machine tool and the compound machining process scheme of typical parts are studied, and the design of the control system of the composite machining machine tool is completed. Through the configuration of station channel, an eight-station composite machine tool is divided into eight relatively independent machine tools that can be controlled in parallel. Through the design of PLC, the synchronization control requirements between each station are completed. Through the design of multi-channel related configuration table items, the difficulties of multi-channel configuration design are solved. By realizing the function of multi-channel parametric production G code, the difficulty of multi-channel G code writing is solved smoothly. Finally, the multi-channel control system is verified by the machining of one-three water heating parts, and the machining efficiency of the machine tool is compared with that of the ordinary machine tool. The experimental results show that the multi-channel control system can realize the expected multi-station compound machining control, and the machining efficiency is 15 times higher than that of ordinary machine tools.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TG659

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