Can you tell the difference between a flat bottom drill and an end mill?

1. How to distinguish between flat bottom drills and end mills in the processing of countersinking?

Flat bottom drills and end mills have flat corners on the top shape. I don't know if you have carefully compared the top of the two tools. In contrast, the tip of a flat-bottom drill is completely flat, while the tip of an end mill is slightly recessed.

Therefore, the flat bottom drill can not only complete ordinary blind hole processing, but also complete countersinking. If an end mill is used, there will be a small protrusion on the bottom of the hole that does not penetrate.

  2. So flat bottom drills have better performance, right?

Can't say who's performance is better. Although the flat bottom drill is similar to the end mill in appearance, as a tool, it is still a drill bit, which can only be processed as a fixed size hole, so if you want to process the countersink drill for different holes, you need to prepare different size drill. End mills can machine holes of different sizes through the helical machining method without preparing other machining tools. In addition to the possibility of flat bottom hole machining, it is more important to determine the type of machining that needs to be done than the material of the workpiece.

processing

Due to the use of flat bottom drills, the boring process of using end mills in the past saves time and improves tool life by increasing the feed rate.