1. How to distinguish the use of flat bottom drill and end milling cutter in the process of spot facing?
Flat bottom drills and end mills have flat angles on the top shape. I wonder if you have carefully compared the top of these two tools. Relatively speaking, the top of the flat bottom drill is completely flat, while the top of the end mill is slightly recessed.
Therefore, the flat bottom drill can not only complete the common blind hole processing, but also complete the spot facing processing. If an end mill is used for machining, there will be a small protrusion on the bottom surface of the hole that does not pass through.
2。 So the flat bottom drill has better performance, right?
We can't say who has better performance. Although the flat bottom drill is similar to the end mill in appearance, as a tool, it is still a drill and can only be processed as a fixed size hole. Therefore, if you want to process spot facers with different holes, you need to prepare drill bits with different sizes. The end milling cutter can process holes of different sizes by spiral machining method without preparing other machining tools. In addition to flat bottom hole machining, it is more important to determine the type of machining to be completed than the material of the workpiece.
machining
Due to the use of flat bottom drill, the boring process using end milling cutter in the past saves time and improves the tool life by increasing the feed rate.
