The drilling process produces burrs on exit surface of a work
piece. The exit burr is the material extending off the exit surface
of the work piece. Their effect on products is important because
they may cause some critical problems such as the deterioration of
surface quality, thus reducing the product durability and
precision. Burr formation affects work piece accuracy and quality
in several ways: dimensional distortion on part edge, challenges to
assembly and handling caused by burrs in sensitive locations on the
work piece, and damage done to the work subsurface from the
deformation associated with burr formation. The optimization
results showed that the combination of low cutting speed, low feed
rate, and high point angle is necessary to minimize burr height.
General
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