Technical Study of TVS-2M Grid Machining
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摘要: TVS-2M下格板是TVS-2M压水堆燃料组件的重要零件,该组件是VVER-1000燃料组件的升级产品。围绕TVS-2M下格板多孔系薄壁结构的特点以及易变形的加工特性,重新设计了加工工艺流程和夹具,确定了其装夹方式以及加工方法。针对加工过程中出现的加工工艺难点,通过优化加工先后顺序,解决了薄壁结构的变形问题;手工编制数控宏程序,解决了加工过程中的过切问题和断刀问题,为板式多孔薄壁结构的数控加工提供了新的工艺方法和编程方法。Abstract: TVS-2M grid is an important component of TVS-2M pressurized water reactor fuel assembly which is a new upgraded product contrast with the VVER-1000.Directing at the structure characteristics with big numbers of holes and thin wall between them,we designed the technological process and fixture method.Some process difficulties have to be solved.The order of processing is optimized to solve the deformation of thin-walled structure.Edited NC macro program is adopted to solve the matter of overcutting and cutting tool broken when machining.It provides a new technology and machining method for NC machining of thin-walled plate type structure.
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Key words:
- Process design /
- Fixture design /
- NC macro program
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