Milling machine cutting teeth, also known as cutter teeth or cutting edges, are the critical components that perform the actual material removal during milling operations. Here are some key points about milling machine cutting teeth:
1. Types:
- Single-point (e.g., in drilling)
- Multi-point (most common in milling)
2. Materials:
- High-speed steel (HSS)
- Carbide (tungsten carbide)
- Ceramics
- CBN (cubic boron nitride)
- Diamond
3. Geometries:
- Flat face
- Serrated
- Helical
- Ball nose
- Chamfered
4. Number of flutes:
- 2 to 6 or more, depending on application
5. Cutting angles:
- Rake angle
- Clearance angle
- Helix angle
6. Functions:
- Remove material
- Shape workpiece
- Control chip formation
7. Wear and resharpening:
- Regular inspection
- Resharping or replacement when worn
8. Coatings:
- Titanium Nitride (TiN)
- Titanium Carbonitride (TiCN)
- Aluminum Titanium Nitride (AlTiN)
9. Selection factors:
- Material being machined
- Desired surface finish
- Production rate requirements
- Machine capabilities
10. Maintenance:
- Proper lubrication
- Correct speeds and feeds
- Regular cleaning
The choice of cutting teeth depends on the specific machining operation, material properties, desired results, and economic considerations. Proper selection and maintenance of cutting teeth are crucial for efficient and effective milling operations.