Surface roughness of the hole

1. Chip adhesion: reduce cutting speed; Avoid blade breakage; Replace with cutting fluid with high extreme pressure and improve the filtration situation; Increase the pressure and flow rate of cutting fluid.

2. Poor coaxiality: Adjust the coaxiality between the machine tool spindle and the drill sleeve; Use appropriate drill sleeve diameter.

3. Cutting speed too low, feed rate too large or uneven: use appropriate cutting parameters.

4. Inappropriate tool geometry: Changing the cutting edge geometry angle and the shape of the guide block.

The orifice is horn shaped

Poor coaxiality: Adjust the coaxiality of the machine tool spindle, drill sleeve, and support sleeve; Use appropriate drill sleeve diameter and replace worn-out drill sleeves in a timely manner.

Drill bit broken

1. Poor chip breaking and inability to discharge chips: Change the size of the chip breaker groove to avoid being too long or too shallow; Promptly detect blade breakage and replace it; Increase the pressure and flow rate of cutting fluid; Use workpieces with uniform material organization.

2. Excessive, insufficient, or uneven feed rate: Use appropriate cutting parameters.

3. Excessive wear of drill bit: Regularly replace the drill bit to avoid excessive wear.

4. Inappropriate cutting fluid: Choose the appropriate cutting fluid and improve the filtration situation.

Low lifespan of drill bit

1. Cutting speed too high or too low, excessive feed rate: Use appropriate cutting parameters.

2. Inappropriate drill bit: replace tool material; Change the position and shape of the directional block.

3. Inappropriate cutting fluid: Replace with cutting fluid with high extreme pressure; Increase the pressure and flow rate of cutting fluid; Improve the filtration of cutting fluid.

other

The chips are in a strip shape: the geometric shape of the chip groove is not suitable; Inappropriate geometric shape of cutting edge; The feed rate is too small; Uneven material organization of the workpiece: changing the geometric shape of the chip groove and cutting edge; Increase the feed rate; Use workpieces with uniform material organization.

Chip size too small: The chip groove is too short or too deep; The radius of the chip breaker is too small: changing the geometric shape of the chip breaker.

Excessive chip size: The chip groove is too long or too shallow; Excessive chip groove radius: changing the geometric shape of the chip groove