Is the drill fast to feed, easy to break, or slow to feed, easy to break?
Therefore, the drill feed should be moderate, not only to ensure good broken, but also to ensure that the drill bit of cutting time.
The drill bit is fast to slow to feed off constantly does not matter much, mainly is the workpiece to be fixed, fixed, easily broken drill bit is tilted, fast heating feed is not easy to burn a bit empty, but also from the new rules, the drill bit, drill feed uneconomical, slow hair less heat, drilling accuracy high
The feed is fast, the drill bit is still constant, the feed is fast, the amount of cutting per tooth is large, the cutting force is large, and when it exceeds the strength limit of the drill, the drill will break. Feed too slowly is easy to wear drill bit, because the feed is too slow, cutting edge cutting more times, so easy to wear.
