关键词: 滚齿, 数控系统, 自动编程, 成组技术, 标准模板

Abstract: To solve automatic programming problems in CNC hobbing,a gear-hobbing CNC automatic programming method was proposed based on group technology and standard template.According to the similarities of the geometric characteristics and process characteristics,the principle of group technology was used to classify the gear work-pieces.By using the hobbing mathematical model of each gear classification unit,the hobbing process parameters was confirmed with the support of process decision-making knowledge base.According to the similarities of hobbing NC code structure,the standard NC code template of each gear class was abstracted.The expressions method was used to instantiate the standard template,and NC code was generated automatically.The modular and parametric hobbing CNC programming were achieved.The hobbing automatic programming system based on Siemens 840D CNC system was developed and the application results showed that the CNC programming alogorithm was efficient and reliable.

Key words: gear-hobbing, numerical control system, automatic programming, group technology, standard template