Failing to decrease the feed pressure on a drill as its point begins to break through the bottom of the work piece will cause the drill to __________.
• Proper drill press operation when approaching breakthrough • Effect of feed pressure on drill behavior at exit of material • Safety concerns when a drill bit catches or binds in the work piece
• What happens to the resistance on the drill bit as the point begins to exit the far side of the work piece? • If you keep full pressure while the bit suddenly has less material to cut, how will that affect the bit’s motion and the work piece? • Which option describes a potentially unsafe situation that machinists are specifically warned about?
• Identify which choice describes a loss of control/safety hazard rather than a neat or controlled cut • Eliminate options that suggest a more accurate or cleaner hole when using too much feed pressure • Think about what you’re always told to do with your hands and the vise when the drill is nearly through: what danger are you trying to avoid?
No comments yet
Be the first to share your thoughts!