Abstract:

The lack of special CNC machining for CNG bottle's bottom caused poor quality and inefficient production.So a new modular machine tool control system with image-based feedback was used to identify and compensate the tool path errors.By using whirlwind turning technology,the problem that the large-sized cyclone CNG cylinders
 should be rotate in the low-speed can be solved.For solving the problem that various processes brought to the layout of the machine tool spindle and the time-consuming between
processes,a layout with a shift multi-axis tool's change was introduced.With these
 technologies applied in the modular machine,it can achieve smooth and high-speed cutting,fast and reliable tools' shift,and self-adaptive compensation for feed,effective
tools' cooling,flexible and environmental machine.The results show that the automation,accuracy and efficiency of the machine tools have improved significantly for
machining of CNG bottle's bottom.

Key words: compressed natural gas(CNG) cylinder bottle, modular machine tool, CNC system, hydraulic control

摘要：

针对传统CNG车载瓶加工缺少数控专机造成大质量CNG车载瓶加工质量较差和生产效率低下等技术问题，将基于移置式多轴机床的旋风切削、基于图像反馈的刀具切削路径误差补偿、面向绿色切削的雾化冷却技术等进行组合应用,开发了CNG车载瓶端部机械加工柔性组合机床,实现了高速平稳切削，快速可靠换刀，自适应性补偿缺陷，高效环保的刀具冷却。结果表明，组合机床的应用使得CNG车载瓶加工技术的自动化程度、加工精度和生产效率都得到了明显提高。
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关键词: CNG车载瓶, 组合机床, 数控系统, 液压控制