Dragging force and astigmatic surface in commercial polishing machines

Gildardo Pablo Lemus-Alonso; Alberto Cordero-Dávila; Rafael Izazaga-Pérez

doi:10.1117/12.903405

25 October 2011 Dragging force and astigmatic surface in commercial polishing machines

Gildardo Pablo Lemus-Alonso, Alberto Cordero-Dávila, Rafael Izazaga-Pérez

Proceedings Volume 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World; 801126 (2011) https://doi.org/10.1117/12.903405
Event: International Commission for Optics (ICO 22), 2011, Puebla, Mexico

Abstract

It is well known that astigmatic surfaces are obtained when surfaces are polished in commercial polishing machines, which are designed to produce surfaces of revolution. The authors of this paper do not know an explanation for this result. In order to understand why the wear is a function of the angular position on the glass, we measured the dragging force applied from a rotating glass to a small fixed tool of Teflon®. These experiments were done for several tool radial positions by using a table travel X-Y. With the aid of a force sensor dragging force as a function of the time was measured. We found that dragging force is a periodic function with fundamental frequency equal to the angular velocity of the glass, indicating that there is more wear on one glass angular position than another. We also found that this result is independent of the radial position of the tool. We used a polisher concentration of 20 degrees Baumé which is recommended by the supplier. And the amount of polisher per time and area units, dragged by the tool, remained constant for each one of the radial positions of the tool.

Citation Download Citation

Gildardo Pablo Lemus-Alonso, Alberto Cordero-Dávila, and Rafael Izazaga-Pérez "Dragging force and astigmatic surface in commercial polishing machines", Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 801126 (25 October 2011); https://doi.org/10.1117/12.903405

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KEYWORDS

Glasses

Surface finishing

Polishing equipment

Sensors

Polishing

Metals

Time metrology

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