Impact of pad material on stability of tool influnce function in CCOS

Abstract

Abstract. The stability of tool influnce function (TIF) is the key to achieve deterministic removal in the computer controlled optical surfacing (CCOS). In this paper, the comparative experiment was conducted to investigate the impact of two common pad materials (i.e., cloth, pitch) on the TIF. In addition, by assistant of the dynamometer, the polishing force of the TIF was detected to reveal the reason of the instability of TIFs. The results show that: 1) the stability of cloth tool is better than that of pitch tool, and the stability of TIFs peak removal efficiency with cloth and pitch are 93.5% and 76%, respectively. 2) the stability of TIFs are directly influenced by the frictional force, which indirectly reflects the stability of the contact state of the workpiece and polishing tool. The research of this paper also provides an important foundation for the further study of improving material removal stability based on the optimization of pad material.