Analysis and treatment of sparks when using electric hammers and electric drills:

Analysis and solutions for sparking when using a hammer or drill:

1. The carbon brushes may be impure, containing hard stone chips or other impurities. In this case, replace the carbon brushes.

2. The mica in the commutator may be protruding. In this case, you need to cut the mica sheet to solve the problem.

3. The carbon brushes may be misaligned. Adjusting their position can solve the problem.

4. The carbon brushes may be too short or the spring pressure may be insufficient. Replace the brushes or springs to solve the problem.

5. The carbon brushes or commutator may be contaminated with oil or sand. Cleaning the contaminants can solve the problem.

6. The commutator copper sheet may contain conductive powder. Cleaning the conductive powder can solve the problem.

7. The commutator surface may be rough or the copper sheet may be uneven. Grinding the commutator can solve the problem.

8. The problem may be caused by solder flowing between the commutator copper plates. Cleaning the solder between the plates can resolve the issue.

9. The problem may be caused by poor contact between the carbon brushes and the commutator surface. Adjusting the spring pressure, sharpening the carbon brushes, or replacing the brushes and springs can resolve the issue.