Strategies to Enhance Agility and Machining Accuracy in Line Boring

Abstract This paper describes three strategies used in the development of an agile line boring station for precision machining of long bores. Careful structural design assures high overall stiffness. Additionally, two mechatronic devices assure high machining accuracy via on-line compensation schemes. One mechanism, a “smart„ line boring tool with built-in instrumentation and control for real-time, facilitates correction of the boring process. Another, a dual-ballscrew system enables correction of tool pitch errors. Overall, the design integrates multiple new concepts for mechanical structure of the machine with an intelligent controller.