wood drill bits workpiece edge line coincident

When the cutter axis and workpiece edge line coincident or close to the edge line of the workpiece, the situation will be very serious.
  Check the machine's power and rigidity to ensure the desired cutter diameter can be used on the machine.
  Spindle overhang on the shortest possible tool to reduce the impact of the position of the flap abrasive cutting wheels and workpiece axis shock loads.
  Suitable for the process using the correct pitch milling, to ensure there is not much in the cutting insert and the workpiece while vibration caused by engagement, on the other hand, when the narrow core drill bit or milling a workpiece cavity to ensure there is sufficient blade and workpiece engagement.
  To ensure that the use of the feed per insert, so that when the chip is thick enough to obtain the correct cutting effect, thereby reducing tool wear. Using positive geometry indexable inserts to obtain a smooth cutting performance and lowest power.
  Selection of suitable width of the cutter diameter workpieces.
  Choose the correct primary angle.
  Correct placement cutter.
  Cutting fluid used only when necessary.
 Follow the rules of maintenance and repair tool and monitoring tool wear.