The failure mode of the drill bit [1]

There are several failure mode of the drill bit. PURROS summarizes the following situations:

Built-up edge

There are several failure mode of the drill bit: built-up edge

Cause
1. The cutting speed is too slow
2. The blade is too wide
3. No coating on the edge

The tip crack on

There are several failure mode of the drill bit: The tip crack on

Cause
1. Rigid and not tight enough
2. Beating too big
3. Intermittent cutting

 

The flank face abrasion wear out

There are several failure mode of the drill bit: The flank face abrasion wear out

Cause
1. Cutting speed is too fast
2. Feed is too small
3. Lip Relief Angle is too small

 

The major Lip Crack on

There are several failure mode of the drill bit: The major Lip Crack on

Cause
1. Rigid and not tight enough
2. Intermittent cutting
3. Excessive wear
4. Wrong tools

 

Related articles:

The failure mode of the drill bit [1]

The failure mode of the drill bit [2]

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