Mechanical Methods of Material Removal

1
Mechanical Methods of Material Removal

• Chapter 4

2
Fundamentals

• The properties of material being cut
• Properties of the cutting tool
• Cutting speed
• Metal is actually pushed and breaks off rather
  than actually being cut. See Pages 78 79.

3
Powered Mechanical Methods of Material Removal

• Turning
• Lathes
• Milling
• Shaping and Planning
• Routing
• Broaching
• Drilling and Boring

• Reaming and Honing
• Sawing
• Grinding
• Sanding
• Polishing

4
Cutting Tools

• Face
• Flank
• End cutting edge
• End face
• Nose radius
• Side cutting edge
• Shank
• See Page 101
• Carbide inserts

5
Feeds Speeds

• Cutting Speed Velocity of work piece as it
  passes cutting tool. SFPM
• Spindle Speed Rotational speed of cutting tool.
• Feed Rate of advance of cutting tool per
  revolution.
• Depth of Cut Distance cutting tool enters the
  work piece.

6
Coolants

• Purposes
• Cool the tool and work surface.
• Lube the point of contact.
• Flush chips away from the work piece.
• Suppress corrosion
• Types
• Chemical
• Emulsions
• Semichemical fluids
• Cutting and grinding oils