An improved polishing method by force controlling and its application in aspheric surfaces ballonet polishing
An improved polishing method by force controlling and its application in aspheric surfaces ballonet polishing
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DOI：
10.1007/s00170-013-4814-3
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发表时间：
2013-02
期刊：
影响因子：
--
通讯作者：
J. Zhan
中科院分区：
文献类型：
--
作者：
J. Zhan
Ballonet抛光工具是一种充满压缩气体的软气囊，由于其适应性，可以改变其形状以适应加工表面，因此在曲面抛光中优先于其他工具。然而，即使在气囊内压力一定的情况下，实际接触应力也会随着工件形状的改变而被气囊材料的拉应力改变。研究了拉应力对接触条件和接触应力的影响，提出了一种基于接触力控制的改进气囊抛光方法。作为一个典型的应用，研究了非球面抛光过程中的几何算法和参数优化。理论研究和实际实验表明，控制接触力比控制气囊内压是更好的方法。
Ballonet polishing tools, soft gasbags filled with compressed gas, are taking priority over other tools in curved surfaces polishing for their adaptability to change their shape to fit the machined surfaces. However, the real contact stress would be changed by the tensile stress of the bag’s material with the change of the workpiece’s shape even if the internal pressure of the gasbag is kept at a constant value. This paper studies how the tensile stress influences the contact conditions and the contact stress, and it advances an improved ballonet polishing method by contact force controlling. As a typical application, geometry arithmetic and parameter optimization are studied on the process of aspheric surfaces polishing. Theory study and real experiments show that, it is a better way by controlling the contact force rather than by controlling the internal pressure of the ballonet.