High-efficiency and high-quality surface finishing using rapid rotation mirror-like surface grinding

1^st report: Development of ultra-high speed grinding machine and truing characteristics

Abstract

Rapid Rotation Mirror-like surface Grinding (RRMG) is a process that has the potential to achieve highly efficient mirror-like surface grinding and to obtain high-quality surfaces, such as a very small heat-affected layer. The authors have produced a new ultra-high speed grinding unit consisting of an ultrafast wheel spindle, work spindle, and truing device to achieve RRMG. In addition, the relationship between the microstructure of a vitrified cBN grinding wheel and Truncate Truing with Micro Dressing (TTMD) conditions was investigated to confirm the characteristics of TTMD in detail. The results indicated that surface roughness of cBN abrasive grain was decreased by decreasing truing lead.