A Study on Reduction of the Top Burr During Planing of Micro Channel Patterns

摘要

Cutting methods using ultra-fine planers/shapers are widely used to machine micro patterns on molds employed for manufacturing highly functional optical elements used in the LCD and LED industries. The top burr created during cutting, however, can deteriorate the quality of the micro pattern and the final product. In particular, the top burr becomes more severe in the case of machining micro channels having a high-aspect ratio. The present study investigates various means of reducing the top bun-formed during planing. The parameters of tool shape angle, initial cutting depth, and overlapped cutting depth were investigated with respect to their effects on the creation of a top burr. The results of the study indicate that small tool shape angle and low cutting depth helped reduce the top burr, and the top burr formed in the first cutting step was proportional to the total top burr.