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An Experimental Investigation of Rotary Diamond Truing and dressing of Vitreous Bond Wheels for Ceramic Grinding.pdf

June 25, 2008 · Filed Under Mechanical & Industrial Engineering  · Tags: , , ,

Experiments of rotary diamond truing and dressing of vitreous bond grinding wheels were conducted to investigate the effects of feed, speed ratio, and overlap ratio on cylindrical grinding of zirconia. The applications of ceramic engine components with complex and precise form and the lack of technology for precision truing of diamond grinding wheels have driven the need to study the use of vitreous bond CBN and SiC wheels for form grinding of ceramics. Truing and grinding forces and the roundness and surface finish of ground zirconia parts were measured. By varying truing process parameters, a wide range of surface finish and roundness could be achieved. Experimental results showed that wheels trued at speed ratio below 1.0 could grind parts with fine surface finish and good roundness. The analysis of truing and grinding results showed the trend of increasing grinding force at higher specific truing energy and better surface finish at higher grinding force. The lack of speed control of the direct-drive, variable-speed truing spindle was observed and its effect on the reverse of direction of truing force at positive speed ratios was studied.

This paper was written by Albert J. Shih, Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695-7910,
USA.

Table of contents:

  • Abstract
  • Introduction
  • Experimental Setup [ Wheel Truing and Dressing ~ Cylindrical grinding of zirconia ~ Workpiece measurements ]
  • Experiment design and grinding results [ Tangential truing force, f ~ Effect of speed ratio ~ Effect of overlap ratio ~ Effect of feed ~ Effect of abrasive type ~ Specific tangential grinding force, f ]
  • Data analysis [ Specific truing energy, u ~ Specific tangential grinding force vs. Specific truing energy ~ Surface finish vs. Specific tangential grinding force ]
  • Concluding remarks

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Download free An experimental investigation of rotary diamond truing and dressing of vitreous bond wheels for ceramic grinding.pdf (20 pages pdf file, 3.5 MB).

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