An experimental study was carried out to investigate the mechanism of the burr formation in drilling of intersecting holes with a gun drill and two types of twist drills. Three different inclination angles, feed rates and cutting speeds were selected to determine their influences on burr formation. The burr formation mechanism of a gun drill as well as a twist drill was proposed and a qualitative comparison of burr shapes created by different drill types was performed. The maximum burr height in each condition was measured. It was found that geometric parameters played the most dominant role in determining burr size.
| Number of Pages : | 6 |
| Published : | 11/01/1999 |
