The integration of CAD, CAM and CNC, which are the key techniques, is the main tendency of machinery manufacturing at the present time.

• 计算机辅助设计、计算机辅助制造和计算机数字控制是推动现代制造业发展的关键技术,CAD/CAM/CNC集成化是目前机械制造业发展的主要趋势。